From 1a29ef8e97505c6ee1de2d08b88ac7c3524302ca Mon Sep 17 00:00:00 2001 From: kaloz Date: Mon, 22 Feb 2010 13:54:47 +0000 Subject: [ubicom32]: move new files out from platform support patch git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19815 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files/drivers/video/backlight/ubicom32bl.c | 399 +++++++++++ .../files/drivers/video/backlight/ubicom32lcd.c | 372 ++++++++++ .../files/drivers/video/backlight/ubicom32lcd.h | 546 +++++++++++++++ .../drivers/video/backlight/ubicom32lcdpower.c | 194 +++++ .../ubicom32/files/drivers/video/ubicom32fb.c | 779 ++++++++++++++++++++ .../ubicom32/files/drivers/video/ubicom32plio80.c | 780 +++++++++++++++++++++ .../ubicom32/files/drivers/video/ubicom32vfb.c | 603 ++++++++++++++++ 7 files changed, 3673 insertions(+) create mode 100644 target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c create mode 100644 target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c create mode 100644 target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h create mode 100644 target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c create mode 100644 target/linux/ubicom32/files/drivers/video/ubicom32fb.c create mode 100644 target/linux/ubicom32/files/drivers/video/ubicom32plio80.c create mode 100644 target/linux/ubicom32/files/drivers/video/ubicom32vfb.c (limited to 'target/linux/ubicom32/files/drivers/video') diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c new file mode 100644 index 000000000..99538c341 --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c @@ -0,0 +1,399 @@ +/* + * drivers/video/backlight/ubicom32bl.c + * Backlight driver for the Ubicom32 platform + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ +#include +#include +#include +#include +#include +#include + +#include +#include + +#define DRIVER_NAME "ubicom32bl" +#define UBICOM32BL_MAX_BRIGHTNESS 255 + +struct ubicom32bl_data { + /* + * Pointer to the platform data structure. Keep this around since we need values + * from it to set the backlight intensity. + */ + const struct ubicom32bl_platform_data *pdata; + + /* + * Backlight device, we have to save this for use when we remove ourselves. + */ + struct backlight_device *bldev; + + /* + * Current intensity, used for get_intensity. + */ + int cur_intensity; + + /* + * Init function for PWM + */ + int (*init_fn)(struct ubicom32bl_data *); + + /* + * Set intensity function depending on the backlight type + */ + int (*set_intensity_fn)(struct ubicom32bl_data *, int); +}; + +/* + * ubicom32bl_set_intensity_gpio + */ +static int ubicom32bl_set_intensity_gpio(struct ubicom32bl_data *ud, int intensity) +{ + ud->cur_intensity = intensity ? 255 : 0; + + if (intensity) { + // set gpio + return 0; + } + + // clear gpio + return 0; +} + +/* + * ubicom32bl_set_intensity_hw + */ +static int ubicom32bl_set_intensity_hw(struct ubicom32bl_data *ud, int intensity) +{ + u16_t period = ud->pdata->pwm_period; + u16_t duty; + + /* + * Calculate the new duty cycle + */ + duty = (period * intensity) / (UBICOM32BL_MAX_BRIGHTNESS + 1); + + /* + * Set the new duty cycle + */ + switch (ud->pdata->pwm_channel) { + case 0: + /* + * Channel 0 is in the lower half of PORT C ctl0 and ctl1 + */ + UBICOM32_IO_PORT(RC)->ctl1 = (ud->pdata->pwm_period << 16) | duty; + break; + + case 1: + /* + * Channel 1 is in the upper half of PORT C ctl0 and ctl2 + */ + UBICOM32_IO_PORT(RC)->ctl2 = (ud->pdata->pwm_period << 16) | duty; + break; + + case 2: + /* + * Channel 2 is in PORT H ctl0 and ctl1 + */ + UBICOM32_IO_PORT(RH)->ctl1 = (ud->pdata->pwm_period << 16) | duty; + break; + } + + ud->cur_intensity = intensity; + + return 0; +} + +/* + * ubicom32bl_set_intensity + */ +static int ubicom32bl_set_intensity(struct backlight_device *bd) +{ + struct ubicom32bl_data *ud = (struct ubicom32bl_data *)bl_get_data(bd); + int intensity = bd->props.brightness; + + /* + * If we're blanked the the intensity doesn't matter. + */ + if ((bd->props.power != FB_BLANK_UNBLANK) || (bd->props.fb_blank != FB_BLANK_UNBLANK)) { + intensity = 0; + } + + /* + * Check for inverted backlight. + */ + if (ud->pdata->invert) { + intensity = UBICOM32BL_MAX_BRIGHTNESS - intensity; + } + + if (ud->set_intensity_fn) { + return ud->set_intensity_fn(ud, intensity); + } + + return -ENXIO; +} + +/* + * ubicom32bl_get_intensity + * Return the current intensity of the backlight. + */ +static int ubicom32bl_get_intensity(struct backlight_device *bd) +{ + struct ubicom32bl_data *ud = (struct ubicom32bl_data *)bl_get_data(bd); + + return ud->cur_intensity; +} + +/* + * ubicom32bl_init_hw_pwm + * Set the appropriate PWM registers + */ +static int ubicom32bl_init_hw_pwm(struct ubicom32bl_data *ud) +{ + /* + * bit 13: enable + */ + u16_t pwm_cfg = (1 << 13) | (ud->pdata->pwm_prescale << 8) ; + + switch (ud->pdata->pwm_channel) { + case 0: + /* + * Channel 0 is in the lower half of PORT C ctl0 and ctl1 (PA5) + */ + UBICOM32_IO_PORT(RC)->ctl0 &= ~0xFFFF; + UBICOM32_IO_PORT(RC)->ctl0 |= pwm_cfg; + UBICOM32_IO_PORT(RC)->ctl1 = ud->pdata->pwm_period << 16; + + /* + * If the port function is not set, set it to GPIO/PWM + */ + if (!UBICOM32_IO_PORT(RA)->function) { + UBICOM32_IO_PORT(RA)->function = 3; + } + break; + + case 1: + /* + * Channel 1 is in the upper half of PORT C ctl0 and ctl2 (PE4) + */ + UBICOM32_IO_PORT(RC)->ctl0 &= ~0xFFFF0000; + UBICOM32_IO_PORT(RC)->ctl0 |= (pwm_cfg << 16); + UBICOM32_IO_PORT(RC)->ctl2 = ud->pdata->pwm_period << 16; + + /* + * If the port function is not set, set it to GPIO/ExtIOInt + */ + if (!UBICOM32_IO_PORT(RE)->function) { + UBICOM32_IO_PORT(RE)->function = 3; + } + break; + + case 2: + /* + * Channel 2 is in PORT H ctl0 and ctl1 (PD0) + */ + UBICOM32_IO_PORT(RH)->ctl0 &= ~0xFFFF0000; + UBICOM32_IO_PORT(RH)->ctl0 = pwm_cfg; + UBICOM32_IO_PORT(RH)->ctl1 = ud->pdata->pwm_period << 16; + + /* + * If the port function is not set, set it to GPIO + */ + if (!UBICOM32_IO_PORT(RD)->function) { + UBICOM32_IO_PORT(RD)->function = 3; + } + break; + } + + return 0; +} + +/* + * ubicom32bl_init_gpio + * Allocate the appropriate GPIO + */ +static int ubicom32bl_init_gpio(struct ubicom32bl_data *ud) +{ + return 0; +} + +static struct backlight_ops ubicom32bl_ops = { + .get_brightness = ubicom32bl_get_intensity, + .update_status = ubicom32bl_set_intensity, +}; + +/* + * ubicom32bl_probe + */ +static int ubicom32bl_probe(struct platform_device *pdev) +{ + const struct ubicom32bl_platform_data *pdata = pdev->dev.platform_data; + struct ubicom32bl_data *ud; + struct backlight_device *bldev; + int retval; + + /* + * Check to see if we have any platform data, if we don't then the backlight is not + * configured on this device. + */ + if (!pdata) { + return -ENODEV; + } + + /* + * Allocate our private data + */ + ud = kzalloc(sizeof(struct ubicom32bl_data), GFP_KERNEL); + if (!ud) { + return -ENOMEM; + } + + ud->pdata = pdata; + + /* + * Check to see that the platform data is valid for this driver + */ + switch (pdata->type) { + case UBICOM32BL_TYPE_PWM: + { + /* + * Make sure we have a PWM peripheral + */ + u32_t chipid; + asm volatile ( + "move.4 %0, CHIP_ID \n\t" + : "=r" (chipid) + ); + if (chipid != 0x00030001) { + retval = -ENODEV; + goto fail; + } + + if (pdata->pwm_channel > 3) { + retval = -ENODEV; + goto fail; + } + if (pdata->pwm_prescale > 16) { + retval = -EINVAL; + goto fail; + } + + ud->init_fn = ubicom32bl_init_hw_pwm; + ud->set_intensity_fn = ubicom32bl_set_intensity_hw; + break; + } + + case UBICOM32BL_TYPE_PWM_HRT: + // For now, PWM HRT devices are treated as binary lights. + + case UBICOM32BL_TYPE_BINARY: + ud->init_fn = ubicom32bl_init_gpio; + ud->set_intensity_fn = ubicom32bl_set_intensity_gpio; + break; + } + + /* + * Register our backlight device + */ + bldev = backlight_device_register(DRIVER_NAME, &pdev->dev, ud, &ubicom32bl_ops); + if (IS_ERR(bldev)) { + retval = PTR_ERR(bldev); + goto fail; + } + + ud->bldev = bldev; + ud->cur_intensity = pdata->default_intensity; + platform_set_drvdata(pdev, ud); + + /* + * Start up the backlight at the prescribed default intensity + */ + bldev->props.power = FB_BLANK_UNBLANK; + bldev->props.max_brightness = UBICOM32BL_MAX_BRIGHTNESS; + bldev->props.brightness = pdata->default_intensity; + + if (ud->init_fn) { + if (ud->init_fn(ud) != 0) { + retval = -ENODEV; + backlight_device_unregister(ud->bldev); + goto fail; + } + } + ubicom32bl_set_intensity(bldev); + + printk(KERN_INFO DRIVER_NAME ": Backlight driver started\n"); + + return 0; + +fail: + platform_set_drvdata(pdev, NULL); + kfree(ud); + return retval; +} + +/* + * ubicom32bl_remove + */ +static int __exit ubicom32bl_remove(struct platform_device *pdev) +{ + struct ubicom32bl_data *ud = platform_get_drvdata(pdev); + + backlight_device_unregister(ud->bldev); + platform_set_drvdata(pdev, NULL); + kfree(ud); + + return 0; +} + +static struct platform_driver ubicom32bl_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + + .remove = __exit_p(ubicom32bl_remove), +}; + +/* + * ubicom32bl_init + */ +static int __init ubicom32bl_init(void) +{ + return platform_driver_probe(&ubicom32bl_driver, ubicom32bl_probe); +} +module_init(ubicom32bl_init); + +/* + * ubicom32bl_exit + */ +static void __exit ubicom32bl_exit(void) +{ + platform_driver_unregister(&ubicom32bl_driver); +} +module_exit(ubicom32bl_exit); + +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION("Ubicom32 backlight driver"); +MODULE_LICENSE("GPL"); diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c new file mode 100644 index 000000000..e4f8c713e --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c @@ -0,0 +1,372 @@ +/* + * drivers/video/ubicom32lcd.c + * LCD initilization code + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + */ +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "ubicom32lcd.h" + +#define DRIVER_NAME "ubicom32lcd" + +struct ubicom32lcd_data { + const struct ubicom32lcd_panel *panel; + + int pin_cs; + int pin_rd; + int pin_rs; + int pin_wr; + int pin_reset; + struct ubicom32_io_port *port_data; + int data_shift; +}; + +/* + * ubicom32lcd_write + * Performs a write cycle on the bus (assumes CS asserted, RD & WR set) + */ +static void ubicom32lcd_write(struct ubicom32lcd_data *ud, int command, u16 data) +{ + if (command) { + UBICOM32_GPIO_SET_PIN_LOW(ud->pin_rs); + } else { + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs); + } + + asm volatile ( + "or.4 4(%[port]), 4(%[port]), %[mask] \n\t" + "not.4 %[mask], %[mask] \n\t" + "and.4 8(%[port]), 8(%[port]), %[mask] \n\t" + "or.4 8(%[port]), 8(%[port]), %[cmd] \n\t" + : + : [port] "a" (ud->port_data), + [mask] "d" (0xFFFF << ud->data_shift), + [cmd] "d" (data << ud->data_shift) + : "cc" + ); + + UBICOM32_GPIO_SET_PIN_LOW(ud->pin_wr); + + //ndelay(50); + udelay(1); + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr); + + udelay(1); + //ndelay(50); +} + +/* + * ubicom32lcd_read_data + * Performs a read cycle on the bus (assumes CS asserted, RD & WR set) + */ +static u16 ubicom32lcd_read_data(struct ubicom32lcd_data *ud) +{ + u32_t data; + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs); + + asm volatile ( + "and.4 4(%[port]), 4(%[port]), %[mask]\n\t" + : + : [port] "a" (ud->port_data), + [mask] "d" (~(0xFFFF << ud->data_shift)) + : "cc" + ); + + UBICOM32_GPIO_SET_PIN_LOW(ud->pin_rd); + + ndelay(300); + + asm volatile ( + "lsr.4 %[data], 12(%[port]), %[shamt] \n\t" + "and.4 %[data], %[data], %[mask] \n\t" + : [data] "=d" (data) + : [port] "a" (ud->port_data), + [mask] "d" (0xFFFF), + [shamt] "d" (ud->data_shift) + : "cc" + ); + + ndelay(200); + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd); + + ndelay(500); + + return data; +} + +/* + * ubicom32lcd_execute + * Executes a script for performing operations on the LCD (assumes CS set) + */ +static void ubicom32lcd_execute(struct ubicom32lcd_data *ud, const struct ubicom32lcd_step *script) +{ + while (1) { + switch (script->op) { + case LCD_STEP_CMD: + ubicom32lcd_write(ud, 1, script->cmd); + break; + + case LCD_STEP_DATA: + ubicom32lcd_write(ud, 0, script->data); + break; + + case LCD_STEP_CMD_DATA: + ubicom32lcd_write(ud, 1, script->cmd); + ubicom32lcd_write(ud, 0, script->data); + break; + + case LCD_STEP_SLEEP: + udelay(script->data); + break; + + case LCD_STEP_DONE: + return; + } + script++; + } +} + +/* + * ubicom32lcd_goto + * Places the gram pointer at a specific X, Y address + */ +static void ubicom32lcd_goto(struct ubicom32lcd_data *ud, int x, int y) +{ + ubicom32lcd_write(ud, 1, ud->panel->horz_reg); + ubicom32lcd_write(ud, 0, x); + ubicom32lcd_write(ud, 1, ud->panel->vert_reg); + ubicom32lcd_write(ud, 0, y); + ubicom32lcd_write(ud, 1, ud->panel->gram_reg); +} + +/* + * ubicom32lcd_panel_init + * Initializes the lcd panel. + */ +static int ubicom32lcd_panel_init(struct ubicom32lcd_data *ud) +{ + u16 id; + + UBICOM32_GPIO_SET_PIN_LOW(ud->pin_reset); + UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_reset); + UBICOM32_GPIO_ENABLE(ud->pin_reset); + + asm volatile ( + "or.4 0x50(%[port]), 0x50(%[port]), %[mask] \n\t" + "not.4 %[mask], %[mask] \n\t" + "and.4 0x04(%[port]), 0x04(%[port]), %[mask] \n\t" + : + : [port] "a" (ud->port_data), + [mask] "d" (0xFFFF << ud->data_shift) + : "cc" + ); + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs); + + UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_rs); + UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_rd); + UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_wr); + UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_cs); + + UBICOM32_GPIO_ENABLE(ud->pin_rs); + UBICOM32_GPIO_ENABLE(ud->pin_rd); + UBICOM32_GPIO_ENABLE(ud->pin_wr); + UBICOM32_GPIO_ENABLE(ud->pin_cs); + + udelay(20); + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_reset); + + udelay(20); + + UBICOM32_GPIO_SET_PIN_LOW(ud->pin_cs); + + id = ubicom32lcd_read_data(ud); + + /* + * We will try to figure out what kind of panel we have if we were not told. + */ + if (!ud->panel) { + const struct ubicom32lcd_panel **p = ubicom32lcd_panels; + while (*p) { + if ((*p)->id && ((*p)->id == id)) { + break; + } + p++; + } + if (!*p) { + printk(KERN_WARNING DRIVER_NAME ":Could not find compatible panel, id=%x\n", id); + return -ENODEV; + } + ud->panel = *p; + } + + /* + * Make sure panel ID matches if we were supplied a panel type + */ + if (ud->panel->id && (ud->panel->id != id)) { + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs); + + return -ENODEV; + } + + ubicom32lcd_execute(ud, ud->panel->init_seq); + + ubicom32lcd_goto(ud, 0, 0); + + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr); + UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs); + + printk(KERN_INFO DRIVER_NAME ": Initialized panel %s\n", ud->panel->desc); + + return 0; +} + +/* + * ubicom32lcd_probe + */ +static int ubicom32lcd_probe(struct platform_device *pdev) +{ + const struct ubicom32lcd_platform_data *pdata = pdev->dev.platform_data; + struct ubicom32lcd_data *ud; + int retval; + + /* + * Allocate our private data + */ + ud = kzalloc(sizeof(struct ubicom32lcd_data), GFP_KERNEL); + if (!ud) { + return -ENOMEM; + } + + if (pdata) { + ud->pin_cs = pdata->pin_cs; + ud->pin_rd = pdata->pin_rd; + ud->pin_wr = pdata->pin_wr; + ud->pin_rs = pdata->pin_rs; + ud->pin_reset = pdata->pin_reset; + ud->port_data = pdata->port_data; + ud->data_shift = pdata->data_shift; + } else { + /* + * Defaults + */ + ud->pin_cs = GPIO_RD_4; + ud->pin_rd = GPIO_RD_5; + ud->pin_rs = GPIO_RD_3; + ud->pin_wr = GPIO_RD_2; + ud->pin_reset = GPIO_RD_7; + ud->port_data = (struct ubicom32_io_port *)RI; + ud->data_shift = 0; + } + + /* + * Initialize the display + */ + retval = ubicom32lcd_panel_init(ud); + if (retval) { + kfree(ud); + return retval; + } + + printk(KERN_INFO DRIVER_NAME ": LCD initialized\n"); + + return 0; +} + +/* + * ubicom32lcd_remove + */ +static int __exit ubicom32lcd_remove(struct platform_device *pdev) +{ + struct ubicom32lcd_data *ud = platform_get_drvdata(pdev); + + kfree(ud); + + return 0; +} + +static struct platform_driver ubicom32lcd_driver = { + .probe = ubicom32lcd_probe, + .remove = ubicom32lcd_remove, + + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + + .remove = __exit_p(ubicom32lcd_remove), +}; + +static struct platform_device *ubicom32lcd_device; + +/* + * ubicom32lcd_init + */ +static int __init ubicom32lcd_init(void) +{ + int res; + + res = platform_driver_register(&ubicom32lcd_driver); + if (res == 0) { + ubicom32lcd_device = platform_device_alloc(DRIVER_NAME, 0); + if (ubicom32lcd_device) { + res = platform_device_add(ubicom32lcd_device); + } else { + res = -ENOMEM; + } + if (res) { + platform_device_put(ubicom32lcd_device); + platform_driver_unregister(&ubicom32lcd_driver); + } + } + return res; +} +module_init(ubicom32lcd_init); + +/* + * ubicom32lcd_exit + */ +static void __exit ubicom32lcd_exit(void) +{ + platform_device_unregister(ubicom32lcd_device); + platform_driver_unregister(&ubicom32lcd_driver); +} +module_exit(ubicom32lcd_exit); + +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION("Ubicom32 LCD driver"); +MODULE_LICENSE("GPL"); diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h new file mode 100644 index 000000000..07650ba9e --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h @@ -0,0 +1,546 @@ +/* + * ubicom32lcd.h + * Ubicom32 lcd panel drivers + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * This Ubicom32 library is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * This Ubicom32 library is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + */ + +#ifndef _UBICOM32LCD_H_ +#define _UBICOM32LCD_H_ + +enum ubicom32lcd_op { + /* + * Sleep for (data) ms + */ + LCD_STEP_SLEEP, + + /* + * Execute write of command + */ + LCD_STEP_CMD, + + /* + * Execute write of data + */ + LCD_STEP_DATA, + + /* + * Execute write of command/data + */ + LCD_STEP_CMD_DATA, + + /* + * Script done + */ + LCD_STEP_DONE, +}; + +struct ubicom32lcd_step { + enum ubicom32lcd_op op; + u16 cmd; + u16 data; +}; + +struct ubicom32lcd_panel { + const struct ubicom32lcd_step *init_seq; + const char *desc; + + u32 xres; + u32 yres; + u32 stride; + u32 flags; + + u16 id; + u16 horz_reg; + u16 vert_reg; + u16 gram_reg; +}; + +#ifdef CONFIG_LCD_UBICOM32_CFAF240320KTTS +static const struct ubicom32lcd_step cfaf240320ktts_init_0[] = { + {LCD_STEP_CMD_DATA, 0x0001, 0x0000,}, // Driver Output Control Register (R01h) Page 14, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0002, 0x0700,}, // LCD Driving Waveform Control (R02h) Page 15, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0003, 0x50A0,}, // Entry Mode (R03h) 0 degrees + {LCD_STEP_CMD_DATA, 0x0004, 0x0000,}, // Scaling Control register (R04h) Page 16, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0008, 0x0207,}, // Display Control 2 (R08h) Page 17, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0009, 0x0000,}, // Display Control 3 (R09h) Page 18, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000A, 0x0000,}, // Frame Cycle Control (R0Ah) Page 19, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000C, 0x0000,}, // External Display Interface Control 1 (R0Ch) Page 20, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000D, 0x0000,}, // Frame Maker Position (R0Dh) Page 21, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000F, 0x0000,}, // External Display Interface Control 2 (R0Fh) Page 21, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0010, 0x0000,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x0000,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0013, 0x0000,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 200}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0101,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0010, 0x12B0,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x01BB,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0013, 0x1300,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0029, 0x0010,}, // NVM read data 2 (R29h) Page 30, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0030, 0x000A,}, // Gamma Control 1 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0031, 0x1326,}, // Gamma Control 2 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0032, 0x0A29,}, // Gamma Control 3 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0033, 0x290A,}, // Gamma Control 4 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0034, 0x2613,}, // Gamma Control 5 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0035, 0x0A0A,}, // Gamma Control 6 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0036, 0x1E03,}, // Gamma Control 7 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0037, 0x031E,}, // Gamma Control 8 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0038, 0x0706,}, // Gamma Control 9 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0039, 0x0303,}, // Gamma Control 10 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003A, 0x0E04,}, // Gamma Control 11 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003B, 0x0E01,}, // Gamma Control 12 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003C, 0x010E,}, // Gamma Control 13 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003D, 0x040E,}, // Gamma Control 14 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003E, 0x0303,}, // Gamma Control 15 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003F, 0x0607,}, // Gamma Control 16 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0050, 0x0000,}, // Window Horizontal RAM Address Start (R50h) Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0051, 0x00EF,}, // Window Horizontal RAM Address End (R51h) Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0052, 0x0000,}, // Window Vertical RAM Address Start (R52h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0053, 0x013F,}, // Window Vertical RAM Address End (R53h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0060, 0x2700,}, // Driver Output Control (R60h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0061, 0x0001,}, // Driver Output Control (R61h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x006A, 0x0000,}, // Vertical Scroll Control (R6Ah) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0080, 0x0000,}, // Display Position - Partial Display 1 (R80h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0081, 0x0000,}, // RAM Address Start - Partial Display 1 (R81h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0082, 0x0000,}, // RAM Address End - Partial Display 1 (R82h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0083, 0x0000,}, // Display Position - Partial Display 2 (R83h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0084, 0x0000,}, // RAM Address Start - Partial Display 2 (R84h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0085, 0x0000,}, // RAM Address End - Partial Display 2 (R85h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0090, 0x0010,}, // Panel Interface Control 1 (R90h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0092, 0x0000,}, // Panel Interface Control 2 (R92h) Page 37, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0093, 0x0103,}, // Panel Interface control 3 (R93h) Page 38, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0095, 0x0210,}, // Panel Interface control 4 (R95h) Page 38, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0097, 0x0000,}, // Panel Interface Control 5 (R97h) Page 40, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0098, 0x0000,}, // Panel Interface Control 6 (R98h) Page 41, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0007, 0x0173,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel cfaf240320ktts_0 = { + .desc = "CFAF240320KTTS", + .init_seq = cfaf240320ktts_init_0, + .horz_reg = 0x20, + .vert_reg = 0x21, + .gram_reg = 0x22, + .xres = 240, + .yres = 320, + .stride = 240, + .id = 0x5408, +}; +#endif + +#ifdef CONFIG_LCD_UBICOM32_CFAF240320KTTS_180 +static const struct ubicom32lcd_step cfaf240320ktts_init_180[] = { + {LCD_STEP_CMD_DATA, 0x0001, 0x0000,}, // Driver Output Control Register (R01h) Page 14, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0002, 0x0700,}, // LCD Driving Waveform Control (R02h) Page 15, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0003, 0x5000,}, // Entry Mode (R03h) 180 degrees + {LCD_STEP_CMD_DATA, 0x0004, 0x0000,}, // Scaling Control register (R04h) Page 16, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0008, 0x0207,}, // Display Control 2 (R08h) Page 17, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0009, 0x0000,}, // Display Control 3 (R09h) Page 18, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000A, 0x0000,}, // Frame Cycle Control (R0Ah) Page 19, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000C, 0x0000,}, // External Display Interface Control 1 (R0Ch) Page 20, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000D, 0x0000,}, // Frame Maker Position (R0Dh) Page 21, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x000F, 0x0000,}, // External Display Interface Control 2 (R0Fh) Page 21, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0010, 0x0000,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x0000,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0013, 0x0000,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 200}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0101,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0010, 0x12B0,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x01BB,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0013, 0x1300,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0029, 0x0010,}, // NVM read data 2 (R29h) Page 30, SPFD5408B Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0030, 0x000A,}, // Gamma Control 1 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0031, 0x1326,}, // Gamma Control 2 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0032, 0x0A29,}, // Gamma Control 3 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0033, 0x290A,}, // Gamma Control 4 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0034, 0x2613,}, // Gamma Control 5 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0035, 0x0A0A,}, // Gamma Control 6 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0036, 0x1E03,}, // Gamma Control 7 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0037, 0x031E,}, // Gamma Control 8 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0038, 0x0706,}, // Gamma Control 9 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0039, 0x0303,}, // Gamma Control 10 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003A, 0x0E04,}, // Gamma Control 11 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003B, 0x0E01,}, // Gamma Control 12 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003C, 0x010E,}, // Gamma Control 13 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003D, 0x040E,}, // Gamma Control 14 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003E, 0x0303,}, // Gamma Control 15 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x003F, 0x0607,}, // Gamma Control 16 Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0050, 0x0000,}, // Window Horizontal RAM Address Start (R50h) Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0051, 0x00EF,}, // Window Horizontal RAM Address End (R51h) Page 32, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0052, 0x0000,}, // Window Vertical RAM Address Start (R52h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0053, 0x013F,}, // Window Vertical RAM Address End (R53h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0060, 0x2700,}, // Driver Output Control (R60h) Page 33, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0061, 0x0001,}, // Driver Output Control (R61h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x006A, 0x0000,}, // Vertical Scroll Control (R6Ah) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0080, 0x0000,}, // Display Position - Partial Display 1 (R80h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0081, 0x0000,}, // RAM Address Start - Partial Display 1 (R81h) Page 35, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0082, 0x0000,}, // RAM Address End - Partial Display 1 (R82h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0083, 0x0000,}, // Display Position - Partial Display 2 (R83h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0084, 0x0000,}, // RAM Address Start - Partial Display 2 (R84h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0085, 0x0000,}, // RAM Address End - Partial Display 2 (R85h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0090, 0x0010,}, // Panel Interface Control 1 (R90h) Page 36, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0092, 0x0000,}, // Panel Interface Control 2 (R92h) Page 37, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0093, 0x0103,}, // Panel Interface control 3 (R93h) Page 38, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0095, 0x0210,}, // Panel Interface control 4 (R95h) Page 38, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0097, 0x0000,}, // Panel Interface Control 5 (R97h) Page 40, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0098, 0x0000,}, // Panel Interface Control 6 (R98h) Page 41, SPFD5408B Datasheet + {LCD_STEP_CMD_DATA, 0x0007, 0x0173,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel cfaf240320ktts_180 = { + .desc = "CFAF240320KTTS 180", + .init_seq = cfaf240320ktts_init_180, + .horz_reg = 0x20, + .vert_reg = 0x21, + .gram_reg = 0x22, + .xres = 240, + .yres = 320, + .stride = 240, + .id = 0x5408, +}; +#endif + +#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_P +static const struct ubicom32lcd_step tft2n0369ep_init[] = { + {LCD_STEP_CMD_DATA, 0x0028, 0x0006}, + {LCD_STEP_CMD_DATA, 0x0000, 0x0001}, + {LCD_STEP_SLEEP, 0, 15}, + {LCD_STEP_CMD_DATA, 0x002B, 0x9532}, + {LCD_STEP_CMD_DATA, 0x0003, 0xAAAC}, + {LCD_STEP_CMD_DATA, 0x000C, 0x0002}, + {LCD_STEP_CMD_DATA, 0x000D, 0x000A}, + {LCD_STEP_CMD_DATA, 0x000E, 0x2C00}, + {LCD_STEP_CMD_DATA, 0x001E, 0x00AA}, + {LCD_STEP_CMD_DATA, 0x0025, 0x8000}, + {LCD_STEP_SLEEP, 0, 15}, + {LCD_STEP_CMD_DATA, 0x0001, 0x2B3F}, + {LCD_STEP_CMD_DATA, 0x0002, 0x0600}, + {LCD_STEP_CMD_DATA, 0x0010, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0011, 0x6030}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0005, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0006, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0016, 0xEF1C}, + {LCD_STEP_CMD_DATA, 0x0017, 0x0003}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0233}, + {LCD_STEP_CMD_DATA, 0x000B, 0x5312}, + {LCD_STEP_CMD_DATA, 0x000F, 0x0000}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0041, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0042, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0048, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0049, 0x013F}, + {LCD_STEP_CMD_DATA, 0x0044, 0xEF00}, + {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0046, 0x013F}, + {LCD_STEP_CMD_DATA, 0x004A, 0x0000}, + {LCD_STEP_CMD_DATA, 0x004B, 0x0000}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0030, 0x0707}, + {LCD_STEP_CMD_DATA, 0x0031, 0x0704}, + {LCD_STEP_CMD_DATA, 0x0032, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0033, 0x0201}, + {LCD_STEP_CMD_DATA, 0x0034, 0x0203}, + {LCD_STEP_CMD_DATA, 0x0035, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0036, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0037, 0x0502}, + {LCD_STEP_CMD_DATA, 0x003A, 0x0302}, + {LCD_STEP_CMD_DATA, 0x003B, 0x0500}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0044, 239 << 8 | 0}, + {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0046, 319}, + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel tft2n0369ep = { + .desc = "TFT2N0369E-Portrait", + .init_seq = tft2n0369ep_init, + .horz_reg = 0x4e, + .vert_reg = 0x4f, + .gram_reg = 0x22, + .xres = 240, + .yres = 320, + .stride = 240, + .id = 0x8989, +}; +#endif + +#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_L +static const struct ubicom32lcd_step tft2n0369e_init[] = { + {LCD_STEP_CMD_DATA, 0x0028, 0x0006}, + {LCD_STEP_CMD_DATA, 0x0000, 0x0001}, + {LCD_STEP_SLEEP, 0, 15}, + {LCD_STEP_CMD_DATA, 0x002B, 0x9532}, + {LCD_STEP_CMD_DATA, 0x0003, 0xAAAC}, + {LCD_STEP_CMD_DATA, 0x000C, 0x0002}, + {LCD_STEP_CMD_DATA, 0x000D, 0x000A}, + {LCD_STEP_CMD_DATA, 0x000E, 0x2C00}, + {LCD_STEP_CMD_DATA, 0x001E, 0x00AA}, + {LCD_STEP_CMD_DATA, 0x0025, 0x8000}, + {LCD_STEP_SLEEP, 0, 15}, + {LCD_STEP_CMD_DATA, 0x0001, 0x2B3F}, + {LCD_STEP_CMD_DATA, 0x0002, 0x0600}, + {LCD_STEP_CMD_DATA, 0x0010, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0011, 0x60A8}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0005, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0006, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0016, 0xEF1C}, + {LCD_STEP_CMD_DATA, 0x0017, 0x0003}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0233}, + {LCD_STEP_CMD_DATA, 0x000B, 0x5312}, + {LCD_STEP_CMD_DATA, 0x000F, 0x0000}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0041, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0042, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0048, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0049, 0x013F}, + {LCD_STEP_CMD_DATA, 0x0044, 0xEF00}, + {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0046, 0x013F}, + {LCD_STEP_CMD_DATA, 0x004A, 0x0000}, + {LCD_STEP_CMD_DATA, 0x004B, 0x0000}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0030, 0x0707}, + {LCD_STEP_CMD_DATA, 0x0031, 0x0704}, + {LCD_STEP_CMD_DATA, 0x0032, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0033, 0x0201}, + {LCD_STEP_CMD_DATA, 0x0034, 0x0203}, + {LCD_STEP_CMD_DATA, 0x0035, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0036, 0x0204}, + {LCD_STEP_CMD_DATA, 0x0037, 0x0502}, + {LCD_STEP_CMD_DATA, 0x003A, 0x0302}, + {LCD_STEP_CMD_DATA, 0x003B, 0x0500}, + {LCD_STEP_SLEEP, 0, 20}, + {LCD_STEP_CMD_DATA, 0x0044, 239 << 8 | 0}, + {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0046, 319}, + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel tft2n0369e = { + .desc = "TFT2N0369E-Landscape", + .init_seq = tft2n0369e_init, + .horz_reg = 0x4e, + .vert_reg = 0x4f, + .gram_reg = 0x22, + .xres = 320, + .yres = 240, + .stride = 320, + .id = 0x8989, +}; +#endif + +#ifdef CONFIG_LCD_UBICOM32_CFAF240400D +static const struct ubicom32lcd_step cfaf240400d_init[] = { + {LCD_STEP_CMD_DATA, 0x0606, 0x0000}, // Pin Control (R606h) // Page 41 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0001}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0110, 0x0001}, // Power Control 6(R110h) // Page 30 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0100, 0x17B0}, // Power Control 1 (R100h) // Page 26 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0101, 0x0147}, // Power Control 2 (R101h) // Page 27 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0102, 0x019D}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0103, 0x3600}, // Power Control 4 (R103h) // Page 29 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0281, 0x0010}, // NVM read data 2 (R281h) // Page 34 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0102, 0x01BD}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + + //--------------- Power control 1~6 ---------------// + {LCD_STEP_CMD_DATA, 0x0100, 0x16B0}, // Power Control 1 (R100h) // Page 26 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0101, 0x0147}, // Power Control 2 (R101h) // Page 27 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0102, 0x01BD}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0103, 0x2d00}, // Power Control 4 (R103h) // Page 29 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0107, 0x0000}, // Power Control 5 (R107h) // Page 30 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0110, 0x0001}, // Power Control 6(R110h) // Page 30 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0280, 0x0000}, // NVM read data 1 (R280h) // Page 33 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0281, 0x0006}, // NVM read data 2 (R281h) // Page 34 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0282, 0x0000}, // NVM read data 3 (R282h) // Page 34 of SPFD5420A Datasheet + + //------- Gamma 2.2 control (R300h to R30Fh) ------// + {LCD_STEP_CMD_DATA, 0x0300, 0x0101}, + {LCD_STEP_CMD_DATA, 0x0301, 0x0b27}, + {LCD_STEP_CMD_DATA, 0x0302, 0x132a}, + {LCD_STEP_CMD_DATA, 0x0303, 0x2a13}, + {LCD_STEP_CMD_DATA, 0x0304, 0x270b}, + {LCD_STEP_CMD_DATA, 0x0305, 0x0101}, + {LCD_STEP_CMD_DATA, 0x0306, 0x1205}, + {LCD_STEP_CMD_DATA, 0x0307, 0x0512}, + {LCD_STEP_CMD_DATA, 0x0308, 0x0005}, + {LCD_STEP_CMD_DATA, 0x0309, 0x0003}, + {LCD_STEP_CMD_DATA, 0x030A, 0x0f04}, + {LCD_STEP_CMD_DATA, 0x030B, 0x0f00}, + {LCD_STEP_CMD_DATA, 0x030C, 0x000f}, + {LCD_STEP_CMD_DATA, 0x030D, 0x040f}, + {LCD_STEP_CMD_DATA, 0x030E, 0x0300}, + {LCD_STEP_CMD_DATA, 0x030F, 0x0500}, + + {LCD_STEP_CMD_DATA, 0x0400, 0x3500}, // Base Image Number of Line (R400h) // Page 36 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0401, 0x0001}, // Base Image Display Control (R401h) // Page 39 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0404, 0x0000}, // Based Image Vertical Scroll Control (R404h) // Page 40 of SPFD5420A Datasheet + + //--------------- Normal set ---------------// + {LCD_STEP_CMD_DATA, 0x0000, 0x0000}, // ID Read Register (R000h) // Page 13 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0001, 0x0100}, // Driver Output Control Register (R001h) // Page 14 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0002, 0x0100}, // LCD Driving Waveform Control (R002h) // Page 14 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0003, 0x1030}, // Entry Mode (R003h) // Page 15 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0006, 0x0000}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0008, 0x0808}, // Display Control 2 (R008h) // Page 17 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0009, 0x0001}, // Display Control 3 (R009h) // Page 18 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x000B, 0x0010}, // Low Power Control (R00Bh) // Page 19 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x000C, 0x0000}, // External Display Interface Control 1 (R00Ch) // Page 19 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x000F, 0x0000}, // External Display Interface Control 2 (R00Fh) // Page 20 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0007, 0x0001}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + + //--------------- Panel interface control 1~6 ---------------// + {LCD_STEP_CMD_DATA, 0x0010, 0x0012}, // Panel Interface Control 1 (R010h) // Page 20 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x0202}, // Panel Interface Control 2 (R011h) // Page 21 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x0300}, // Panel Interface control 3 (R012h) // Page 22 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0020, 0x021E}, // Panel Interface control 4 (R020h) // Page 22 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0021, 0x0202}, // Panel Interface Control 5 (021Rh) // Page 24 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0022, 0x0100}, // Panel Interface Control 6 (R022h) // Page 25 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0090, 0x8000}, // Frame Marker Control (R090h) // Page 25 of SPFD5420A Datasheet + + //--------------- Partial display ---------------// + {LCD_STEP_CMD_DATA, 0x0210, 0x0000}, // Window Horizontal RAM Address Start (R210h) // Page 35 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0211, 0x00EF}, // Window Horziontal RAM Address End (R211h) // Page 35 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0212, 0x0000}, // Window Vertical RAM Address Start (R212h) // Page 35 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0213, 0x018F}, // Window Vertical RAM Address End (R213h) // Page 35 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0500, 0x0000}, // Display Position - Partial Display 1 (R500h) // Page 40 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0501, 0x0000}, // RAM Address Start - Partial Display 1 (R501h)// Page 40 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0502, 0x0000}, // RAM Address End - Partail Display 1 (R502h) // Page 40 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0503, 0x0000}, // Display Position - Partial Display 2 (R503h) // Page 40 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0504, 0x0000}, // RAM Address Start . Partial Display 2 (R504h)// Page 41 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0505, 0x0000}, // RAM Address End . Partial Display 2 (R505h) // Page 41 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0606, 0x0000}, // Pin Control (R606h) // Page 41 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x06F0, 0x0000}, // NVM Access Control (R6F0h) // Page 41 of SPFD5420A Datasheet + {LCD_STEP_CMD_DATA, 0x0007, 0x0173}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 50}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0171}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + {LCD_STEP_SLEEP, 0, 10}, + {LCD_STEP_CMD_DATA, 0x0007, 0x0173}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel cfaf240400d = { + .desc = "CFAF240400D", + .init_seq = cfaf240400d_init, + .horz_reg = 0x0200, + .vert_reg = 0x0201, + .gram_reg = 0x0202, + .xres = 240, + .yres = 400, + .stride = 240, + .id = 0x5420, +}; +#endif + +#ifdef CONFIG_LCD_UBICOM32_CFAF240400F +static const struct ubicom32lcd_step cfaf320240f_init[] = { + {LCD_STEP_CMD_DATA, 0x0028, 0x0006}, // VCOM OTP Page 55-56 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0000, 0x0001}, // start Oscillator Page 36 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0010, 0x0000}, // Sleep mode Page 49 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0001, 0x32EF}, // Driver Output Control Page 36-39 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0002, 0x0600}, // LCD Driving Waveform Control Page 40-42 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0003, 0x6A38}, // Power Control 1 Page 43-44 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0011, 0x6870}, // Entry Mode Page 50-52 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0X000F, 0x0000}, // Gate Scan Position Page 49 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0X000B, 0x5308}, // Frame Cycle Control Page 45 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x000C, 0x0003}, // Power Control 2 Page 47 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x000D, 0x000A}, // Power Control 3 Page 48 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x000E, 0x2E00}, // Power Control 4 Page 48 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x001E, 0x00BE}, // Power Control 5 Page 53 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0025, 0x8000}, // Frame Frequency Control Page 53 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0026, 0x7800}, // Analog setting Page 54 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x004E, 0x0000}, // Ram Address Set Page 58 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x004F, 0x0000}, // Ram Address Set Page 58 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0012, 0x08D9}, // Sleep mode Page 49 of SSD2119 datasheet + + // Gamma Control (R30h to R3Bh) -- Page 56 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0030, 0x0000}, + {LCD_STEP_CMD_DATA, 0x0031, 0x0104}, + {LCD_STEP_CMD_DATA, 0x0032, 0x0100}, + {LCD_STEP_CMD_DATA, 0x0033, 0x0305}, + {LCD_STEP_CMD_DATA, 0x0034, 0x0505}, + {LCD_STEP_CMD_DATA, 0x0035, 0x0305}, + {LCD_STEP_CMD_DATA, 0x0036, 0x0707}, + {LCD_STEP_CMD_DATA, 0x0037, 0x0300}, + {LCD_STEP_CMD_DATA, 0x003A, 0x1200}, + {LCD_STEP_CMD_DATA, 0x003B, 0x0800}, + + {LCD_STEP_CMD_DATA, 0x0007, 0x0033}, // Display Control Page 45 of SSD2119 datasheet + + {LCD_STEP_CMD_DATA, 0x0044, 0xEF00}, // Vertical RAM address position Page 57 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, // Horizontal RAM address position Page 57 of SSD2119 datasheet + {LCD_STEP_CMD_DATA, 0x0046, 0x013F}, // Horizontal RAM address position Page 57 of SSD2119 datasheet + + {LCD_STEP_SLEEP, 0, 150}, + + {LCD_STEP_DONE, 0, 0}, +}; + +const struct ubicom32lcd_panel cfaf320240f = { + .desc = "CFAF320240F", + .init_seq = cfaf320240f_init, + .horz_reg = 0x4e, + .vert_reg = 0x4f, + .gram_reg = 0x22, + .xres = 320, + .yres = 240, + .stride = 320, + .id = 0x9919, +}; +#endif + +const struct ubicom32lcd_panel *ubicom32lcd_panels[] = { +#ifdef CONFIG_LCD_UBICOM32_CFAF240400KTTS_180 + &cfaf240320ktts_180, +#endif +#ifdef CONFIG_LCD_UBICOM32_CFAF240400KTTS + &cfaf240320ktts_0, +#endif +#ifdef CONFIG_LCD_UBICOM32_CFAF240400D + &cfaf240400d, +#endif +#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_P + &tft2n0369ep, +#endif +#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_L + &tft2n0369e, +#endif +#ifdef CONFIG_LCD_UBICOM32_CFAF240400F + &cfaf320240f, +#endif + NULL, +}; + +#endif diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c new file mode 100644 index 000000000..6aeed43bc --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c @@ -0,0 +1,194 @@ +/* + * drivers/video/backlight/ubicom32lcdpowerpower.c + * LCD power driver for the Ubicom32 platform + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define DRIVER_NAME "ubicom32lcdpower" + +struct ubicom32lcdpower_data { + /* + * Pointer to the platform data structure. Keep this around since we need values + * from it to set the backlight intensity. + */ + const struct ubicom32lcdpower_platform_data *pdata; + + /* + * LCD device, we have to save this for use when we remove ourselves. + */ + struct lcd_device *lcddev; +}; + +/* + * ubicom32lcdpower_set_power + */ +static int ubicom32lcdpower_set_power(struct lcd_device *ld, int power) +{ + struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld); + if (power == FB_BLANK_UNBLANK) { + gpio_direction_output(ud->pdata->vgh_gpio, ud->pdata->vgh_polarity); + return 0; + } + + gpio_direction_output(ud->pdata->vgh_gpio, !ud->pdata->vgh_polarity); + return 0; +} + +/* + * ubicom32lcdpower_get_power + */ +static int ubicom32lcdpower_get_power(struct lcd_device *ld) +{ + struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld); + int vgh = gpio_get_value(ud->pdata->vgh_gpio); + if ((vgh && ud->pdata->vgh_polarity) || (!vgh && !ud->pdata->vgh_polarity)) { + return 1; + } + + return 0; +} + +static struct lcd_ops ubicom32lcdpower_ops = { + .get_power = ubicom32lcdpower_get_power, + .set_power = ubicom32lcdpower_set_power, +}; + +/* + * ubicom32lcdpower_probe + */ +static int ubicom32lcdpower_probe(struct platform_device *pdev) +{ + const struct ubicom32lcdpower_platform_data *pdata = pdev->dev.platform_data; + struct ubicom32lcdpower_data *ud; + struct lcd_device *lcddev; + int retval; + + /* + * Check to see if we have any platform data, if we don't have a LCD to control + */ + if (!pdata) { + return -ENODEV; + } + + /* + * Allocate our private data + */ + ud = kzalloc(sizeof(struct ubicom32lcdpower_data), GFP_KERNEL); + if (!ud) { + return -ENOMEM; + } + + ud->pdata = pdata; + + /* + * Request our GPIOs + */ + retval = gpio_request(pdata->vgh_gpio, "vgh"); + if (retval) { + dev_err(&pdev->dev, "Failed to allocate vgh GPIO\n"); + goto fail_gpio; + } + + /* + * Register our lcd device + */ + lcddev = lcd_device_register(DRIVER_NAME, &pdev->dev, ud, &ubicom32lcdpower_ops); + if (IS_ERR(lcddev)) { + retval = PTR_ERR(lcddev); + goto fail; + } + + ud->lcddev = lcddev; + platform_set_drvdata(pdev, ud); + + ubicom32lcdpower_set_power(lcddev, FB_BLANK_UNBLANK); + + printk(KERN_INFO DRIVER_NAME ": LCD driver started\n"); + + return 0; + +fail: + gpio_free(pdata->vgh_gpio); + +fail_gpio: + platform_set_drvdata(pdev, NULL); + kfree(ud); + return retval; +} + +/* + * ubicom32lcdpower_remove + */ +static int __exit ubicom32lcdpower_remove(struct platform_device *pdev) +{ + struct ubicom32lcdpower_data *ud = platform_get_drvdata(pdev); + + lcd_device_unregister(ud->lcddev); + platform_set_drvdata(pdev, NULL); + kfree(ud); + + return 0; +} + +static struct platform_driver ubicom32lcdpower_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + + .remove = __exit_p(ubicom32lcdpower_remove), +}; + +/* + * ubicom32lcdpower_init + */ +static int __init ubicom32lcdpower_init(void) +{ + return platform_driver_probe(&ubicom32lcdpower_driver, ubicom32lcdpower_probe); +} +module_init(ubicom32lcdpower_init); + +/* + * ubicom32lcdpower_exit + */ +static void __exit ubicom32lcdpower_exit(void) +{ + platform_driver_unregister(&ubicom32lcdpower_driver); +} +module_exit(ubicom32lcdpower_exit); + +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION("Ubicom32 lcd power driver"); +MODULE_LICENSE("GPL"); diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32fb.c b/target/linux/ubicom32/files/drivers/video/ubicom32fb.c new file mode 100644 index 000000000..4193560f7 --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/ubicom32fb.c @@ -0,0 +1,779 @@ +/* + * drivers/video/ubicom32fb.c + * Ubicom32 frame buffer driver + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ + +/* + * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by + * Geert Uytterhoeven. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define DRIVER_NAME "ubicom32fb" +#define DRIVER_DESCRIPTION "Ubicom32 frame buffer driver" + +#define PALETTE_ENTRIES_NO 16 + +/* + * Option variables + * + * vram_size: VRAM size in kilobytes, subject to alignment + */ +static int vram_size = 0; +module_param(vram_size, int, 0); +MODULE_PARM_DESC(vram, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment"); +static int init_value = 0; +module_param(init_value, int, 0); +MODULE_PARM_DESC(init, "Initial value of the framebuffer (16-bit number)."); + +/* + * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in. + */ +static struct fb_fix_screeninfo ubicom32fb_fix = { + .id = "Ubicom32", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, + .accel = FB_ACCEL_UBICOM32, +}; + +/* + * Filled in at probe time when we find out what the hardware supports + */ +static struct fb_var_screeninfo ubicom32fb_var; + +/* + * Private data structure + */ +struct ubicom32fb_drvdata { + struct fb_info *fbinfo; + bool cmap_alloc; + + /* + * The address of the framebuffer in memory + */ + void *fb; + void *fb_aligned; + + /* + * Total size of vram including alignment allowance + */ + u32 total_vram_size; + + /* + * Interrupt to set when changing registers + */ + u32 vp_int; + + /* + * Optional: Interrupt used by TIO to signal us + */ + u32 rx_int; + + /* + * Base address of the regs for VDC_TIO + */ + volatile struct vdc_tio_vp_regs *regs; + + /* + * non-zero if we are in yuv mode + */ + u8_t is_yuv; + + /* + * Fake palette of 16 colors + */ + u32 pseudo_palette[PALETTE_ENTRIES_NO]; + + /* + * Wait queue and lock used to block when we need to wait + * for something to happen. + */ + wait_queue_head_t waitq; + struct mutex lock; + +}; + +/* + * ubicom32fb_set_next_frame + * Sets the next frame buffer to display + * + * if sync is TRUE then this function will block until the hardware + * acknowledges the change + */ +static inline void ubicom32fb_set_next_frame(struct ubicom32fb_drvdata *ud, void *fb, u8_t sync) +{ + ud->regs->next_frame_flags = ud->is_yuv ? VDCTIO_NEXT_FRAME_FLAG_YUV : 0; + ud->regs->next_frame = (void *)((u32_t)fb | 1); + + /* + * If we have interrupts, then we can wait on it + */ + if (ud->rx_int != -1) { + DEFINE_WAIT(wait); + unsigned long flags; + + spin_lock_irqsave(&ud->lock, flags); + prepare_to_wait(&ud->waitq, &wait, TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&ud->lock, flags); + schedule(); + finish_wait(&ud->waitq, &wait); + return; + } + + /* + * No interrupt, we will just spin here + */ + while (sync && ((u32_t)ud->regs->next_frame & 1)); +} + +/* + * ubicom32fb_send_command + * Sends a command/data pair to the VDC + */ +static inline void ubicom32fb_send_command(struct ubicom32fb_drvdata *ud, u16 command, u8_t block) +{ + ud->regs->command = command; + ubicom32_set_interrupt(ud->vp_int); + while (block && ud->regs->command); +} + +/* + * ubicom32fb_ioctl + * Handles any ioctls sent to us + */ +static int ubicom32fb_ioctl(struct fb_info *fbi, unsigned int cmd, + unsigned long arg) +{ + struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)fbi->par; + void __user *argp = (void __user *)arg; + int retval = -EFAULT; + + switch (cmd) { + case UBICOM32FB_IOCTL_SET_NEXT_FRAME_SYNC: + // check alignment, return -EINVAL if necessary + ubicom32fb_set_next_frame(ud, argp, 1); + retval = 0; + break; + + case UBICOM32FB_IOCTL_SET_NEXT_FRAME: + // check alignment, return -EINVAL if necessary + ubicom32fb_set_next_frame(ud, argp, 0); + retval = 0; + break; + + case UBICOM32FB_IOCTL_SET_MODE: + if (!(ud->regs->caps & VDCTIO_CAPS_SUPPORTS_SCALING)) { + break; + } else { + struct ubicom32fb_mode mode; + volatile struct vdc_tio_vp_regs *regs = ud->regs; + u32_t flags = 0; + + if (copy_from_user(&mode, argp, sizeof(mode))) { + break; + } + + regs->x_in = mode.width; + regs->y_in = mode.height; + regs->x_out = regs->xres; + regs->y_out = regs->yres; + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV_SCAN_ORDER) { + flags |= VDCTIO_SCALE_FLAG_YUV_SCAN_ORDER; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV_BLOCK_ORDER) { + flags |= VDCTIO_SCALE_FLAG_YUV_BLOCK_ORDER; + } + ud->is_yuv = mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV; + if (ud->is_yuv) { + flags |= VDCTIO_SCALE_FLAG_YUV; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VRANGE_16_255) { + flags |= VDCTIO_SCALE_FLAG_VRANGE_16_255; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VRANGE_0_255) { + flags |= VDCTIO_SCALE_FLAG_VRANGE_0_255; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VSUB) { + flags |= VDCTIO_SCALE_FLAG_VSUB; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_HSUB_2_1) { + flags |= VDCTIO_SCALE_FLAG_HSUB_2_1; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_HSUB_1_1) { + flags |= VDCTIO_SCALE_FLAG_HSUB_1_1; + } + if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_SCALE_ENABLE) { + flags |= VDCTIO_SCALE_FLAG_ENABLE; + } + if (mode.next_frame) { + flags |= VDCTIO_SCALE_FLAG_SET_FRAME_BUFFER; + regs->next_frame = mode.next_frame; + } + + regs->scale_flags = flags; + ubicom32fb_send_command(ud, VDCTIO_COMMAND_SET_SCALE_MODE, 1); + retval = 0; + break; + } + + default: + retval = -ENOIOCTLCMD; + break; + } + + return retval; +} + +/* + * ubicom32fb_interrupt + * Called by the OS when the TIO has set the rx_int + */ +static irqreturn_t ubicom32fb_interrupt(int vec, void *appdata) +{ + struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)appdata; + + spin_lock(&ud->lock); + if (waitqueue_active(&ud->waitq)) { + wake_up(&ud->waitq); + } + spin_unlock(&ud->lock); + + return IRQ_HANDLED; +} + +/* + * ubicom32fb_pan_display + * Pans the display to a given location. Supports only y direction panning. + */ +static int ubicom32fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) +{ + struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)fbi->par; + void *new_addr; + + /* + * Get the last y line that would be displayed. Since we don't support YWRAP, + * it must be less than our virtual y size. + */ + u32 lasty = var->yoffset + var->yres; + if (lasty > fbi->var.yres_virtual) { + /* + * We would fall off the end of our frame buffer if we panned here. + */ + return -EINVAL; + } + + if (var->xoffset) { + /* + * We don't support panning in the x direction + */ + return -EINVAL; + } + + /* + * Everything looks sane, go ahead and pan + * + * We have to calculate a new address for the VDC to look at + */ + new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length); + + /* + * Send down the command. The buffer will switch at the next vertical blank + */ + ubicom32fb_set_next_frame(ud, (void *)new_addr, 0); + + return 0; +} + +/* + * ubicom32fb_setcolreg + * Sets a color in our virtual palette + */ +static int ubicom32fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) +{ + u32 *palette = fbi->pseudo_palette; + + if (regno >= PALETTE_ENTRIES_NO) { + return -EINVAL; + } + + /* + * We only use 8 bits from each color + */ + red >>= 8; + green >>= 8; + blue >>= 8; + + /* + * Convert any grayscale values + */ + if (fbi->var.grayscale) { + u16 gray = red + green + blue; + gray += (gray >> 2) + (gray >> 3) - (gray >> 7); + gray >>= 2; + if (gray > 255) { + gray = 255; + } + red = gray; + blue = gray; + green = gray; + } + + palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) | + (blue << fbi->var.blue.offset); + + return 0; +} + +/* + * ubicom32fb_mmap + */ +static int ubicom32fb_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct ubicom32fb_drvdata *drvdata = (struct ubicom32fb_drvdata *)info->par; + + vma->vm_start = (unsigned long)(drvdata->fb_aligned); + + vma->vm_end = vma->vm_start + info->fix.smem_len; + + /* For those who don't understand how mmap works, go read + * Documentation/nommu-mmap.txt. + * For those that do, you will know that the VM_MAYSHARE flag + * must be set in the vma->vm_flags structure on noMMU + * Other flags can be set, and are documented in + * include/linux/mm.h + */ + + vma->vm_flags |= VM_MAYSHARE | VM_SHARED; + + return 0; +} + +/* + * ubicom32fb_blank + */ +static int ubicom32fb_blank(int blank_mode, struct fb_info *fbi) +{ + return 0; +#if 0 + struct ubicom32fb_drvdata *drvdata = to_ubicom32fb_drvdata(fbi); + + switch (blank_mode) { + case FB_BLANK_UNBLANK: + /* turn on panel */ + ubicom32fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default); + break; + + case FB_BLANK_NORMAL: + case FB_BLANK_VSYNC_SUSPEND: + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_POWERDOWN: + /* turn off panel */ + ubicom32fb_out_be32(drvdata, REG_CTRL, 0); + default: + break; + + } + return 0; /* success */ +#endif +} + +static struct fb_ops ubicom32fb_ops = +{ + .owner = THIS_MODULE, + .fb_pan_display = ubicom32fb_pan_display, + .fb_setcolreg = ubicom32fb_setcolreg, + .fb_blank = ubicom32fb_blank, + .fb_mmap = ubicom32fb_mmap, + .fb_ioctl = ubicom32fb_ioctl, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +/* + * ubicom32fb_release + */ +static int ubicom32fb_release(struct device *dev) +{ + struct ubicom32fb_drvdata *ud = dev_get_drvdata(dev); + +#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) + //ubicom32fb_blank(VESA_POWERDOWN, &drvdata->info); +#endif + + unregister_framebuffer(ud->fbinfo); + + if (ud->cmap_alloc) { + fb_dealloc_cmap(&ud->fbinfo->cmap); + } + + if (ud->fb) { + kfree(ud->fb); + } + + if (ud->rx_int != -1) { + free_irq(ud->rx_int, ud); + } + + /* + * Turn off the display + */ + //ubicom32fb_out_be32(drvdata, REG_CTRL, 0); + //iounmap(drvdata->regs); + + framebuffer_release(ud->fbinfo); + dev_set_drvdata(dev, NULL); + + return 0; +} + +/* + * ubicom32fb_platform_probe + */ +static int __init ubicom32fb_platform_probe(struct platform_device *pdev) +{ + struct ubicom32fb_drvdata *ud; + struct resource *irq_resource_rx; + struct resource *irq_resource_tx; + struct resource *mem_resource; + struct fb_info *fbinfo; + int rc; + size_t fbsize; + struct device *dev = &pdev->dev; + int offset; + struct vdc_tio_vp_regs *regs; + + /* + * Get our resources + */ + irq_resource_tx = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!irq_resource_tx) { + dev_err(dev, "No tx IRQ resource assigned\n"); + return -ENODEV; + } + + irq_resource_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1); + if (!irq_resource_rx) { + dev_err(dev, "No rx IRQ resource assigned\n"); + return -ENODEV; + } + + mem_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem_resource || !mem_resource->start) { + dev_err(dev, "No mem resource assigned\n"); + return -ENODEV; + } + regs = (struct vdc_tio_vp_regs *)mem_resource->start; + if (regs->version != VDCTIO_VP_VERSION) { + dev_err(dev, "VDCTIO is not compatible with this driver tio:%x drv:%x\n", + regs->version, VDCTIO_VP_VERSION); + return -ENODEV; + } + + /* + * This is the minimum VRAM size + */ + fbsize = regs->xres * regs->yres * (regs->bpp / 8); + if (!vram_size) { + vram_size = (fbsize + 1023) / 1024; + } else { + if (fbsize > (vram_size * 1024)) { + dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize); + return -ENOMEM; // should be ebadparam? + } + } + + /* + * Allocate the framebuffer instance + our private data + */ + fbinfo = framebuffer_alloc(sizeof(struct ubicom32fb_drvdata), &pdev->dev); + if (!fbinfo) { + dev_err(dev, "Not enough memory to allocate instance.\n"); + return -ENOMEM; + } + + /* + * Fill in our private data. + */ + ud = (struct ubicom32fb_drvdata *)fbinfo->par; + ud->fbinfo = fbinfo; + ud->regs = (struct vdc_tio_vp_regs *)(mem_resource->start); + dev_set_drvdata(dev, ud); + + ud->vp_int = irq_resource_tx->start; + + /* + * If we were provided an rx_irq then we need to init the appropriate + * queues, locks, and functions. + */ + ud->rx_int = -1; + if (irq_resource_rx->start != DEVTREE_IRQ_NONE) { + init_waitqueue_head(&ud->waitq); + mutex_init(&ud->lock); + if (request_irq(ud->rx_int, ubicom32fb_interrupt, IRQF_SHARED, "ubicom32fb_rx", ud)) { + dev_err(dev, "Couldn't request rx IRQ\n"); + rc = -ENOMEM; + goto fail; + } + ud->rx_int = irq_resource_rx->start; + } + + /* + * Allocate and align the requested amount of VRAM + */ + ud->total_vram_size = (vram_size * 1024) + regs->fb_align; + ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL); + if (ud->fb == NULL) { + dev_err(dev, "Couldn't allocate VRAM\n"); + rc = -ENOMEM; + goto fail; + } + + offset = (u32_t)ud->fb & (regs->fb_align - 1); + if (!offset) { + ud->fb_aligned = ud->fb; + } else { + offset = regs->fb_align - offset; + ud->fb_aligned = ud->fb + offset; + } + + /* + * Clear the entire frame buffer + */ + if (!init_value) { + memset(ud->fb_aligned, 0, vram_size * 1024); + } else { + unsigned short *p = ud->fb_aligned; + int i; + for (i = 0; i < ((vram_size * 1024) / sizeof(u16_t)); i++) { + *p++ = init_value; + } + } + + /* + * Fill in the fb_var_screeninfo structure + */ + memset(&ubicom32fb_var, 0, sizeof(ubicom32fb_var)); + ubicom32fb_var.bits_per_pixel = regs->bpp; + ubicom32fb_var.red.offset = regs->rshift; + ubicom32fb_var.green.offset = regs->gshift; + ubicom32fb_var.blue.offset = regs->bshift; + ubicom32fb_var.red.length = regs->rbits; + ubicom32fb_var.green.length = regs->gbits; + ubicom32fb_var.blue.length = regs->bbits; + ubicom32fb_var.activate = FB_ACTIVATE_NOW; + +#if 0 + /* + * Turn on the display + */ + ud->reg_ctrl_default = REG_CTRL_ENABLE; + if (regs->rotate_screen) + ud->reg_ctrl_default |= REG_CTRL_ROTATE; + ubicom32fb_out_be32(ud, REG_CTRL, ud->reg_ctrl_default); +#endif + + /* + * Fill in the fb_info structure + */ + ud->fbinfo->device = dev; + ud->fbinfo->screen_base = (void *)ud->fb_aligned; + ud->fbinfo->fbops = &ubicom32fb_ops; + ud->fbinfo->fix = ubicom32fb_fix; + ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned; + ud->fbinfo->fix.smem_len = vram_size * 1024; + ud->fbinfo->fix.line_length = regs->xres * (regs->bpp / 8); + ud->fbinfo->fix.mmio_start = (u32)regs; + ud->fbinfo->fix.mmio_len = sizeof(struct vdc_tio_vp_regs); + + /* + * We support panning in the y direction only + */ + ud->fbinfo->fix.xpanstep = 0; + ud->fbinfo->fix.ypanstep = 1; + + ud->fbinfo->pseudo_palette = ud->pseudo_palette; + ud->fbinfo->flags = FBINFO_DEFAULT; + ud->fbinfo->var = ubicom32fb_var; + ud->fbinfo->var.xres = regs->xres; + ud->fbinfo->var.yres = regs->yres; + + /* + * We cannot pan in the X direction, so xres_virtual is regs->xres + * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length + */ + ud->fbinfo->var.xres_virtual = regs->xres; + ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length; + + //ud->fbinfo->var.height = regs->height_mm; + //ud->fbinfo->var.width = regs->width_mm; + + /* + * Allocate a color map + */ + rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0); + if (rc) { + dev_err(dev, "Fail to allocate colormap (%d entries)\n", + PALETTE_ENTRIES_NO); + goto fail; + } + ud->cmap_alloc = true; + + /* + * Register new frame buffer + */ + rc = register_framebuffer(ud->fbinfo); + if (rc) { + dev_err(dev, "Could not register frame buffer\n"); + goto fail; + } + + /* + * Start up the VDC + */ + ud->regs->next_frame = ud->fb; + ubicom32fb_send_command(ud, VDCTIO_COMMAND_START, 0); + + /* + * Tell the log we are here + */ + dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u), regs=%p irqtx=%u irqrx=%u\n", + ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres, + ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual, ud->regs, + irq_resource_tx->start, irq_resource_rx->start); + + /* + * Success + */ + return 0; + +fail: + ubicom32fb_release(dev); + return rc; +} + +/* + * ubicom32fb_platform_remove + */ +static int ubicom32fb_platform_remove(struct platform_device *pdev) +{ + dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n"); + return ubicom32fb_release(&pdev->dev); +} + +static struct platform_driver ubicom32fb_platform_driver = { + .probe = ubicom32fb_platform_probe, + .remove = ubicom32fb_platform_remove, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +#ifndef MODULE +/* + * ubicom32fb_setup + * Process kernel boot options + */ +static int __init ubicom32fb_setup(char *options) +{ + char *this_opt; + + if (!options || !*options) { + return 0; + } + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) { + continue; + } + + if (!strncmp(this_opt, "init_value=", 10)) { + init_value = simple_strtoul(this_opt + 11, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "vram_size=", 10)) { + vram_size = simple_strtoul(this_opt + 10, NULL, 0); + continue; + } + } + return 0; +} +#endif /* MODULE */ + +/* + * ubicom32fb_init + */ +static int __devinit ubicom32fb_init(void) +{ +#ifndef MODULE + /* + * Get kernel boot options (in 'video=ubicom32fb:') + */ + char *option = NULL; + + if (fb_get_options(DRIVER_NAME, &option)) { + return -ENODEV; + } + ubicom32fb_setup(option); +#endif /* MODULE */ + + return platform_driver_register(&ubicom32fb_platform_driver); +} +module_init(ubicom32fb_init); + +/* + * ubicom32fb_exit + */ +static void __exit ubicom32fb_exit(void) +{ + platform_driver_unregister(&ubicom32fb_platform_driver); +} +module_exit(ubicom32fb_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION(DRIVER_DESCRIPTION); diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c b/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c new file mode 100644 index 000000000..2e13fd707 --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c @@ -0,0 +1,780 @@ +/* + * drivers/video/ubicom32plio80.c + * Ubicom32 80 bus PLIO buffer driver + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + */ + +/* + * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by + * Geert Uytterhoeven. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRIVER_NAME "ubicom32plio80" +#define DRIVER_DESCRIPTION "Ubicom32 80 bus PLIO frame buffer driver" + +#define PALETTE_ENTRIES_NO 16 + +/* + * Option variables + * + * vram_size: VRAM size in kilobytes, subject to alignment + */ +static int vram_size = 0; +module_param(vram_size, int, 0); +MODULE_PARM_DESC(vram_size, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment"); + +static int xres = 240; +module_param(xres, int, 0); +MODULE_PARM_DESC(xres, "x (horizontal) resolution"); + +static int yres = 320; +module_param(yres, int, 0); +MODULE_PARM_DESC(yres, "y (vertical) resolution"); + +static int bgr = 0; +module_param(bgr, int, 0); +MODULE_PARM_DESC(bgr, "display is BGR (Blue is MSB)"); + +#define BITS_PER_PIXEL 16 + +/* + * Buffer alignment, must not be 0 + */ +#define UBICOM32PLIO80_ALIGNMENT 4 + +/* + * PLIO FSM + * 16-bit data bus on port I + * CS on EXTCTL[6] + * WR on EXTCTL[4] + */ +static const plio_fctl_t plio_fctl = { + .fctl0 = { + .ptif_port_mode = PLIO_PORT_MODE_DI, + .ptif_portd_cfg = 0, + .ptif_porti_cfg = 3, + .edif_ds = 6, + .edif_cmp_mode = 1, + .ecif_extclk_ena = 0, // enable clock output on PD7 table 2.65/p111 says extctl[0]? + .icif_clk_src_sel = PLIO_CLK_IO, + }, + .fctl2 = { + .icif_eclk_div = 10, + .icif_iclk_div = 10, + }, + + }; + + static const plio_config_t plio_config = { + .pfsm = { + /* + * Table 12.63 + */ + .grpsel[0] = {1,1,1,1,1,1,1,1,1,1}, + + /* + * Table 12.66 Counter load value + */ + .cs_lut[0] = {0,0,0,0,0,0,0,0}, + + /* + * Table 2.75 PLIO PFSM Configuration Registers + */ + // 3 2 1 0 + .extctl_o_lut[0] = {0x3f, 0x2f, 0x3f, 0x3f}, + // 7 6 5 4 + .extctl_o_lut[1] = {0x3f, 0x3f, 0x3f, 0x2f}, + }, + .edif = { + .odr_oe = 0xffff, + }, + .ecif = { + .output_ena = (1 << 6) | (1 << 4), + }, +}; + +static const u32_t ubicom32plio80_plio_fsm[] = { + // 0-F + 0x00070007, 0x00070007, + 0x00070007, 0x00070007, + 0x00070007, 0x00070007, + 0x00070007, 0x00070007, + + 0x16260806, 0x16260806, + 0x16260806, 0x16260806, + 0x16260806, 0x16260806, + 0x16260806, 0x16260806, + + // 10 - 1f + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + 0x22061806, 0x22061806, + + // 20 - 2f + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, + + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, + 0x00070806, 0x00070806, +}; + +/* + * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in. + */ +static struct fb_fix_screeninfo ubicom32plio80_fix = { + .id = "Ubicom32", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, + .accel = FB_ACCEL_UBICOM32_PLIO80, +}; + +/* + * Filled in at probe time when we find out what the hardware supports + */ +static struct fb_var_screeninfo ubicom32plio80_var; + +/* + * Private data structure + */ +struct ubicom32plio80_drvdata { + struct fb_info *fbinfo; + bool cmap_alloc; + + /* + * The address of the framebuffer in memory + */ + void *fb; + void *fb_aligned; + + /* + * Total size of vram including alignment allowance + */ + u32 total_vram_size; + + /* + * Fake palette of 16 colors + */ + u32 pseudo_palette[PALETTE_ENTRIES_NO]; + + int irq_req; + + /* + * Current pointer and bytes left to transfer with the PLIO + */ + void *xfer_ptr; + u32 bytes_to_xfer; + u32 busy; +}; + +static struct platform_device *ubicom32plio80_platform_device; + +/* + * ubicom32plio80_isr + */ +static int ubicom32plio80_isr(int irq, void *appdata) +{ + struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)appdata; + + if (!ud->bytes_to_xfer) { + ubicom32_disable_interrupt(TX_FIFO_INT(PLIO_PORT)); + PLIO_NBR->intmask.txfifo_wm = 0; + ud->busy = 0; + return IRQ_HANDLED; + } + + asm volatile ( + ".rept 8 \n\t" + "move.4 (%[fifo]), (%[data])4++ \n\t" + ".endr \n\t" + : [data] "+a" (ud->xfer_ptr) + : [fifo] "a" (&PLIO_NBR->tx_lo) + ); + + ud->bytes_to_xfer -= 32; + + return IRQ_HANDLED; +} + +/* + * ubicom32plio80_update + */ +static void ubicom32plio80_update(struct ubicom32plio80_drvdata *ud, u32 *fb) +{ + struct ubicom32_io_port *ri = (struct ubicom32_io_port *)RI; + struct ubicom32_io_port *rd = (struct ubicom32_io_port *)RD; + + ud->xfer_ptr = fb; + ud->bytes_to_xfer = (xres * yres * 2) - 64; + ud->busy = 1; + + ri->gpio_mask = 0; + rd->gpio_mask &= ~((1 << 4) | (1 << 2)); + + *(u32 *)(&PLIO_NBR->intclr) = ~0; + PLIO_NBR->intmask.txfifo_wm = 1; + PLIO_NBR->fifo_wm.tx = 8; + ubicom32_enable_interrupt(TX_FIFO_INT(PLIO_PORT)); + + asm volatile ( + ".rept 16 \n\t" + "move.4 (%[fifo]), (%[data])4++ \n\t" + ".endr \n\t" + : [data] "+a" (ud->xfer_ptr) + : [fifo] "a" (&PLIO_NBR->tx_lo) + ); +} + +/* + * ubicom32plio80_pan_display + * Pans the display to a given location. Supports only y direction panning. + */ +static int ubicom32plio80_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) +{ + struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)fbi->par; + void *new_addr; + + /* + * Get the last y line that would be displayed. Since we don't support YWRAP, + * it must be less than our virtual y size. + */ + u32 lasty = var->yoffset + var->yres; + if (lasty > fbi->var.yres_virtual) { + /* + * We would fall off the end of our frame buffer if we panned here. + */ + return -EINVAL; + } + + if (var->xoffset) { + /* + * We don't support panning in the x direction + */ + return -EINVAL; + } + + /* + * Everything looks sane, go ahead and pan + * + * We have to calculate a new address for the VDC to look at + */ + new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length); + + return 0; +} + +/* + * ubicom32plio80_setcolreg + * Sets a color in our virtual palette + */ +static int ubicom32plio80_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) +{ + u32 *palette = fbi->pseudo_palette; + + if (regno >= PALETTE_ENTRIES_NO) { + return -EINVAL; + } + + /* + * We only use 8 bits from each color + */ + red >>= 8; + green >>= 8; + blue >>= 8; + + /* + * Convert any grayscale values + */ + if (fbi->var.grayscale) { + u16 gray = red + green + blue; + gray += (gray >> 2) + (gray >> 3) - (gray >> 7); + gray >>= 2; + if (gray > 255) { + gray = 255; + } + red = gray; + blue = gray; + green = gray; + } + + palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) | + (blue << fbi->var.blue.offset); + + return 0; +} + +/* + * ubicom32plio80_mmap + */ +static int ubicom32plio80_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)info->par; + + vma->vm_start = (unsigned long)(ud->fb_aligned); + + vma->vm_end = vma->vm_start + info->fix.smem_len; + + /* For those who don't understand how mmap works, go read + * Documentation/nommu-mmap.txt. + * For those that do, you will know that the VM_MAYSHARE flag + * must be set in the vma->vm_flags structure on noMMU + * Other flags can be set, and are documented in + * include/linux/mm.h + */ + + vma->vm_flags |= VM_MAYSHARE | VM_SHARED; + + return 0; +} + +/* + * ubicom32plio80_check_var + * Check the var, tweak it but don't change operational parameters. + */ +static int ubicom32plio80_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)info->par; + u32 line_size = var->xres * (BITS_PER_PIXEL / 8); + + /* + * See if we can handle this bpp + */ + if (var->bits_per_pixel > BITS_PER_PIXEL) { + return -EINVAL; + } + var->bits_per_pixel = BITS_PER_PIXEL; + + /* + * See if we have enough memory to handle this resolution + */ + if ((line_size * var->yres * BITS_PER_PIXEL / 8) > ud->total_vram_size) { + return -EINVAL; + } + + var->xres_virtual = var->xres; + var->yres_virtual = ud->total_vram_size / line_size; + + var->red.length = 5; + var->green.length = 6; + var->green.offset = 5; + var->blue.length = 5; + var->transp.offset = var->transp.length = 0; + + if (bgr) { + var->red.offset = 0; + var->blue.offset = 11; + } else { + var->red.offset = 11; + var->blue.offset = 0; + } + + var->nonstd = 0; + var->height = -1; + var->width = -1; + var->vmode = FB_VMODE_NONINTERLACED; + var->sync = 0; + + return 0; +} + +/* + * ubicom32plio80_set_par + * Set the video mode according to info->var + */ +static int ubicom32plio80_set_par(struct fb_info *info) +{ + /* + * Anything changed? + */ + if ((xres == info->var.xres) && (yres == info->var.yres)) { + return 0; + } + + /* + * Implement changes + */ + xres = info->var.xres; + yres = info->var.yres; + info->fix.visual = FB_VISUAL_TRUECOLOR; + info->fix.xpanstep = 0; + info->fix.ypanstep = 1; + info->fix.line_length = xres * (BITS_PER_PIXEL / 8); + + return 0; +} + +/* + * ubicom32plio80_ops + * List of supported operations + */ +static struct fb_ops ubicom32plio80_ops = +{ + .owner = THIS_MODULE, + .fb_pan_display = ubicom32plio80_pan_display, + .fb_setcolreg = ubicom32plio80_setcolreg, + .fb_mmap = ubicom32plio80_mmap, + .fb_check_var = ubicom32plio80_check_var, + .fb_set_par = ubicom32plio80_set_par, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +/* + * ubicom32plio80_release + */ +static int ubicom32plio80_release(struct device *dev) +{ + struct ubicom32plio80_drvdata *ud = dev_get_drvdata(dev); + + unregister_framebuffer(ud->fbinfo); + + if (ud->irq_req) { + free_irq(TX_FIFO_INT(PLIO_PORT), ud); + } + if (ud->cmap_alloc) { + fb_dealloc_cmap(&ud->fbinfo->cmap); + } + + if (ud->fb) { + kfree(ud->fb); + } + + framebuffer_release(ud->fbinfo); + dev_set_drvdata(dev, NULL); + + return 0; +} + +/* + * ubicom32plio80_platform_probe + */ +static int __init ubicom32plio80_platform_probe(struct platform_device *pdev) +{ + struct ubicom32plio80_drvdata *ud; + struct fb_info *fbinfo; + int rc; + size_t fbsize; + struct device *dev = &pdev->dev; + int offset; + + /* + * This is the minimum VRAM size + */ + fbsize = xres * yres * 2; + if (!vram_size) { + vram_size = (fbsize + 1023) / 1024; + } else { + if (fbsize > (vram_size * 1024)) { + dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize); + return -ENOMEM; // should be ebadparam? + } + } + + /* + * Allocate the framebuffer instance + our private data + */ + fbinfo = framebuffer_alloc(sizeof(struct ubicom32plio80_drvdata), &pdev->dev); + if (!fbinfo) { + dev_err(dev, "Not enough memory to allocate instance.\n"); + return -ENOMEM; + } + + /* + * Fill in our private data. + */ + ud = (struct ubicom32plio80_drvdata *)fbinfo->par; + ud->fbinfo = fbinfo; + dev_set_drvdata(dev, ud); + + /* + * Allocate and align the requested amount of VRAM + */ + ud->total_vram_size = (vram_size * 1024) + UBICOM32PLIO80_ALIGNMENT; + ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL); + if (ud->fb == NULL) { + dev_err(dev, "Couldn't allocate VRAM\n"); + rc = -ENOMEM; + goto fail; + } + + offset = (u32_t)ud->fb & (UBICOM32PLIO80_ALIGNMENT - 1); + if (!offset) { + ud->fb_aligned = ud->fb; + } else { + offset = UBICOM32PLIO80_ALIGNMENT - offset; + ud->fb_aligned = ud->fb + offset; + } + + /* + * Clear the entire frame buffer + */ + memset(ud->fb_aligned, 0, vram_size * 1024); + + /* + * Fill in the fb_var_screeninfo structure + */ + memset(&ubicom32plio80_var, 0, sizeof(ubicom32plio80_var)); + ubicom32plio80_var.bits_per_pixel = BITS_PER_PIXEL; + ubicom32plio80_var.red.length = 5; + ubicom32plio80_var.green.length = 6; + ubicom32plio80_var.green.offset = 5; + ubicom32plio80_var.blue.length = 5; + ubicom32plio80_var.activate = FB_ACTIVATE_NOW; + + if (bgr) { + ubicom32plio80_var.red.offset = 0; + ubicom32plio80_var.blue.offset = 11; + } else { + ubicom32plio80_var.red.offset = 11; + ubicom32plio80_var.blue.offset = 0; + } + + /* + * Fill in the fb_info structure + */ + ud->fbinfo->device = dev; + ud->fbinfo->screen_base = (void *)ud->fb_aligned; + ud->fbinfo->fbops = &ubicom32plio80_ops; + ud->fbinfo->fix = ubicom32plio80_fix; + ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned; + ud->fbinfo->fix.smem_len = vram_size * 1024; + ud->fbinfo->fix.line_length = xres * 2; + ud->fbinfo->fix.mmio_start = (u32)ud; + ud->fbinfo->fix.mmio_len = sizeof(struct ubicom32plio80_drvdata); + + /* + * We support panning in the y direction only + */ + ud->fbinfo->fix.xpanstep = 0; + ud->fbinfo->fix.ypanstep = 1; + + ud->fbinfo->pseudo_palette = ud->pseudo_palette; + ud->fbinfo->flags = FBINFO_DEFAULT; + ud->fbinfo->var = ubicom32plio80_var; + ud->fbinfo->var.xres = xres; + ud->fbinfo->var.yres = yres; + + /* + * We cannot pan in the X direction, so xres_virtual is xres + * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length + */ + ud->fbinfo->var.xres_virtual = xres; + ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length; + + /* + * Allocate a color map + */ + rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0); + if (rc) { + dev_err(dev, "Fail to allocate colormap (%d entries)\n", + PALETTE_ENTRIES_NO); + goto fail; + } + ud->cmap_alloc = true; + + /* + * Register new frame buffer + */ + rc = register_framebuffer(ud->fbinfo); + if (rc) { + dev_err(dev, "Could not register frame buffer\n"); + goto fail; + } + + /* + * request the PLIO IRQ + */ + rc = request_irq(TX_FIFO_INT(PLIO_PORT), ubicom32plio80_isr, IRQF_DISABLED, "ubicom32plio80", ud); + if (rc) { + dev_err(dev, "Could not request IRQ\n"); + goto fail; + } + ud->irq_req = 1; + + /* + * Clear any garbage out of the TX FIFOs (idif_txfifo_flush) + * + * cast through ubicom32_io_port to make sure the compiler does a word write + */ + ((struct ubicom32_io_port *)PLIO_NBR)->int_set = (1 << 18); + + /* + * Start up the state machine + */ + plio_init(&plio_fctl, &plio_config, (plio_sram_t *)ubicom32plio80_plio_fsm, sizeof(ubicom32plio80_plio_fsm)); + PLIO_NBR->fctl0.pfsm_cmd = 0; + + ubicom32plio80_update(ud, ud->fb_aligned); + + /* + * Tell the log we are here + */ + dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u)\n", + ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres, + ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual); + + /* + * Success + */ + return 0; + +fail: + ubicom32plio80_release(dev); + return rc; +} + +/* + * ubicom32plio80_platform_remove + */ +static int ubicom32plio80_platform_remove(struct platform_device *pdev) +{ + dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n"); + return ubicom32plio80_release(&pdev->dev); +} + +static struct platform_driver ubicom32plio80_platform_driver = { + .probe = ubicom32plio80_platform_probe, + .remove = ubicom32plio80_platform_remove, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +#ifndef MODULE +/* + * ubicom32plio80_setup + * Process kernel boot options + */ +static int __init ubicom32plio80_setup(char *options) +{ + char *this_opt; + + if (!options || !*options) { + return 0; + } + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) { + continue; + } + + if (!strncmp(this_opt, "vram_size=", 10)) { + vram_size = simple_strtoul(this_opt + 10, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "bgr=", 4)) { + bgr = simple_strtoul(this_opt + 4, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "xres=", 5)) { + xres = simple_strtoul(this_opt + 5, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "yres=", 5)) { + yres = simple_strtoul(this_opt + 5, NULL, 0); + continue; + } + } + return 0; +} +#endif /* MODULE */ + +/* + * ubicom32plio80_init + */ +static int __devinit ubicom32plio80_init(void) +{ + int ret; + +#ifndef MODULE + /* + * Get kernel boot options (in 'video=ubicom32plio80:') + */ + char *option = NULL; + + if (fb_get_options(DRIVER_NAME, &option)) { + return -ENODEV; + } + ubicom32plio80_setup(option); +#endif /* MODULE */ + + ret = platform_driver_register(&ubicom32plio80_platform_driver); + + if (!ret) { + ubicom32plio80_platform_device = platform_device_alloc(DRIVER_NAME, 0); + + if (ubicom32plio80_platform_device) + ret = platform_device_add(ubicom32plio80_platform_device); + else + ret = -ENOMEM; + + if (ret) { + platform_device_put(ubicom32plio80_platform_device); + platform_driver_unregister(&ubicom32plio80_platform_driver); + } + } + + return ret; +} +module_init(ubicom32plio80_init); + +/* + * ubicom32plio80_exit + */ +static void __exit ubicom32plio80_exit(void) +{ + platform_device_unregister(ubicom32plio80_platform_device); + platform_driver_unregister(&ubicom32plio80_platform_driver); +} +module_exit(ubicom32plio80_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION(DRIVER_DESCRIPTION); diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c b/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c new file mode 100644 index 000000000..8478273d4 --- /dev/null +++ b/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c @@ -0,0 +1,603 @@ +/* + * drivers/video/ubicom32vfb.c + * Ubicom32 virtual frame buffer driver + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see . + */ + +/* + * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by + * Geert Uytterhoeven. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRIVER_NAME "ubicom32vfb" +#define DRIVER_DESCRIPTION "Ubicom32 virtual frame buffer driver" + +#define PALETTE_ENTRIES_NO 16 + +/* + * Option variables + * + * vram_size: VRAM size in kilobytes, subject to alignment + */ +static int vram_size = 0; +module_param(vram_size, int, 0); +MODULE_PARM_DESC(vram_size, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment"); + +static int xres = 320; +module_param(xres, int, 0); +MODULE_PARM_DESC(xres, "x (horizontal) resolution"); + +static int yres = 240; +module_param(yres, int, 0); +MODULE_PARM_DESC(yres, "y (vertical) resolution"); + +static int bgr = 0; +module_param(bgr, int, 0); +MODULE_PARM_DESC(bgr, "display is BGR (Blue is MSB)"); + +#define BITS_PER_PIXEL 16 + +/* + * Buffer alignment, must not be 0 + */ +#define UBICOM32VFB_ALIGNMENT 4 + +/* + * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in. + */ +static struct fb_fix_screeninfo ubicom32vfb_fix = { + .id = "Ubicom32", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, + .accel = FB_ACCEL_UBICOM32_VFB, +}; + +/* + * Filled in at probe time when we find out what the hardware supports + */ +static struct fb_var_screeninfo ubicom32vfb_var; + +/* + * Private data structure + */ +struct ubicom32vfb_drvdata { + struct fb_info *fbinfo; + bool cmap_alloc; + + /* + * The address of the framebuffer in memory + */ + void *fb; + void *fb_aligned; + + /* + * Total size of vram including alignment allowance + */ + u32 total_vram_size; + + /* + * Fake palette of 16 colors + */ + u32 pseudo_palette[PALETTE_ENTRIES_NO]; +}; + +static struct platform_device *ubicom32vfb_platform_device; + +/* + * ubicom32vfb_pan_display + * Pans the display to a given location. Supports only y direction panning. + */ +static int ubicom32vfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) +{ + struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)fbi->par; + void *new_addr; + + /* + * Get the last y line that would be displayed. Since we don't support YWRAP, + * it must be less than our virtual y size. + */ + u32 lasty = var->yoffset + var->yres; + if (lasty > fbi->var.yres_virtual) { + /* + * We would fall off the end of our frame buffer if we panned here. + */ + return -EINVAL; + } + + if (var->xoffset) { + /* + * We don't support panning in the x direction + */ + return -EINVAL; + } + + /* + * Everything looks sane, go ahead and pan + * + * We have to calculate a new address for the VDC to look at + */ + new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length); + + return 0; +} + +/* + * ubicom32vfb_setcolreg + * Sets a color in our virtual palette + */ +static int ubicom32vfb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) +{ + u32 *palette = fbi->pseudo_palette; + + if (regno >= PALETTE_ENTRIES_NO) { + return -EINVAL; + } + + /* + * We only use 8 bits from each color + */ + red >>= 8; + green >>= 8; + blue >>= 8; + + /* + * Convert any grayscale values + */ + if (fbi->var.grayscale) { + u16 gray = red + green + blue; + gray += (gray >> 2) + (gray >> 3) - (gray >> 7); + gray >>= 2; + if (gray > 255) { + gray = 255; + } + red = gray; + blue = gray; + green = gray; + } + + palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) | + (blue << fbi->var.blue.offset); + + return 0; +} + +/* + * ubicom32vfb_mmap + */ +static int ubicom32vfb_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)info->par; + + vma->vm_start = (unsigned long)(ud->fb_aligned); + + vma->vm_end = vma->vm_start + info->fix.smem_len; + + /* For those who don't understand how mmap works, go read + * Documentation/nommu-mmap.txt. + * For those that do, you will know that the VM_MAYSHARE flag + * must be set in the vma->vm_flags structure on noMMU + * Other flags can be set, and are documented in + * include/linux/mm.h + */ + + vma->vm_flags |= VM_MAYSHARE | VM_SHARED; + + return 0; +} + +/* + * ubicom32vfb_check_var + * Check the var, tweak it but don't change operational parameters. + */ +static int ubicom32vfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)info->par; + u32 line_size = var->xres * (BITS_PER_PIXEL / 8); + + /* + * See if we can handle this bpp + */ + if (var->bits_per_pixel > BITS_PER_PIXEL) { + return -EINVAL; + } + var->bits_per_pixel = BITS_PER_PIXEL; + + /* + * See if we have enough memory to handle this resolution + */ + if ((line_size * var->yres * BITS_PER_PIXEL / 8) > ud->total_vram_size) { + return -EINVAL; + } + + var->xres_virtual = var->xres; + var->yres_virtual = ud->total_vram_size / line_size; + + var->red.length = 5; + var->green.length = 6; + var->green.offset = 5; + var->blue.length = 5; + var->transp.offset = var->transp.length = 0; + + if (bgr) { + var->red.offset = 0; + var->blue.offset = 11; + } else { + var->red.offset = 11; + var->blue.offset = 0; + } + + var->nonstd = 0; + var->height = -1; + var->width = -1; + var->vmode = FB_VMODE_NONINTERLACED; + var->sync = 0; + + return 0; +} + +/* + * ubicom32vfb_set_par + * Set the video mode according to info->var + */ +static int ubicom32vfb_set_par(struct fb_info *info) +{ + /* + * Anything changed? + */ + if ((xres == info->var.xres) && (yres == info->var.yres)) { + return 0; + } + + /* + * Implement changes + */ + xres = info->var.xres; + yres = info->var.yres; + info->fix.visual = FB_VISUAL_TRUECOLOR; + info->fix.xpanstep = 0; + info->fix.ypanstep = 1; + info->fix.line_length = xres * (BITS_PER_PIXEL / 8); + + return 0; +} + +/* + * ubicom32vfb_ops + * List of supported operations + */ +static struct fb_ops ubicom32vfb_ops = +{ + .owner = THIS_MODULE, + .fb_pan_display = ubicom32vfb_pan_display, + .fb_setcolreg = ubicom32vfb_setcolreg, + .fb_mmap = ubicom32vfb_mmap, + .fb_check_var = ubicom32vfb_check_var, + .fb_set_par = ubicom32vfb_set_par, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +/* + * ubicom32vfb_release + */ +static int ubicom32vfb_release(struct device *dev) +{ + struct ubicom32vfb_drvdata *ud = dev_get_drvdata(dev); + + unregister_framebuffer(ud->fbinfo); + + if (ud->cmap_alloc) { + fb_dealloc_cmap(&ud->fbinfo->cmap); + } + + if (ud->fb) { + kfree(ud->fb); + } + + framebuffer_release(ud->fbinfo); + dev_set_drvdata(dev, NULL); + + return 0; +} + +/* + * ubicom32vfb_platform_probe + */ +static int __init ubicom32vfb_platform_probe(struct platform_device *pdev) +{ + struct ubicom32vfb_drvdata *ud; + struct fb_info *fbinfo; + int rc; + size_t fbsize; + struct device *dev = &pdev->dev; + int offset; + + /* + * This is the minimum VRAM size + */ + fbsize = xres * yres * 2; + if (!vram_size) { + vram_size = (fbsize + 1023) / 1024; + } else { + if (fbsize > (vram_size * 1024)) { + dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize); + return -ENOMEM; // should be ebadparam? + } + } + + /* + * Allocate the framebuffer instance + our private data + */ + fbinfo = framebuffer_alloc(sizeof(struct ubicom32vfb_drvdata), &pdev->dev); + if (!fbinfo) { + dev_err(dev, "Not enough memory to allocate instance.\n"); + return -ENOMEM; + } + + /* + * Fill in our private data. + */ + ud = (struct ubicom32vfb_drvdata *)fbinfo->par; + ud->fbinfo = fbinfo; + dev_set_drvdata(dev, ud); + + /* + * Allocate and align the requested amount of VRAM + */ + ud->total_vram_size = (vram_size * 1024) + UBICOM32VFB_ALIGNMENT; + ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL); + if (ud->fb == NULL) { + dev_err(dev, "Couldn't allocate VRAM\n"); + rc = -ENOMEM; + goto fail; + } + + offset = (u32_t)ud->fb & (UBICOM32VFB_ALIGNMENT - 1); + if (!offset) { + ud->fb_aligned = ud->fb; + } else { + offset = UBICOM32VFB_ALIGNMENT - offset; + ud->fb_aligned = ud->fb + offset; + } + + /* + * Clear the entire frame buffer + */ + memset(ud->fb_aligned, 0, vram_size * 1024); + + /* + * Fill in the fb_var_screeninfo structure + */ + memset(&ubicom32vfb_var, 0, sizeof(ubicom32vfb_var)); + ubicom32vfb_var.bits_per_pixel = BITS_PER_PIXEL; + ubicom32vfb_var.red.length = 5; + ubicom32vfb_var.green.length = 6; + ubicom32vfb_var.green.offset = 5; + ubicom32vfb_var.blue.length = 5; + ubicom32vfb_var.activate = FB_ACTIVATE_NOW; + + if (bgr) { + ubicom32vfb_var.red.offset = 0; + ubicom32vfb_var.blue.offset = 11; + } else { + ubicom32vfb_var.red.offset = 11; + ubicom32vfb_var.blue.offset = 0; + } + + /* + * Fill in the fb_info structure + */ + ud->fbinfo->device = dev; + ud->fbinfo->screen_base = (void *)ud->fb_aligned; + ud->fbinfo->fbops = &ubicom32vfb_ops; + ud->fbinfo->fix = ubicom32vfb_fix; + ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned; + ud->fbinfo->fix.smem_len = vram_size * 1024; + ud->fbinfo->fix.line_length = xres * 2; + ud->fbinfo->fix.mmio_start = (u32)ud; + ud->fbinfo->fix.mmio_len = sizeof(struct ubicom32vfb_drvdata); + + /* + * We support panning in the y direction only + */ + ud->fbinfo->fix.xpanstep = 0; + ud->fbinfo->fix.ypanstep = 1; + + ud->fbinfo->pseudo_palette = ud->pseudo_palette; + ud->fbinfo->flags = FBINFO_DEFAULT; + ud->fbinfo->var = ubicom32vfb_var; + ud->fbinfo->var.xres = xres; + ud->fbinfo->var.yres = yres; + + /* + * We cannot pan in the X direction, so xres_virtual is xres + * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length + */ + ud->fbinfo->var.xres_virtual = xres; + ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length; + + /* + * Allocate a color map + */ + rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0); + if (rc) { + dev_err(dev, "Fail to allocate colormap (%d entries)\n", + PALETTE_ENTRIES_NO); + goto fail; + } + ud->cmap_alloc = true; + + /* + * Register new frame buffer + */ + rc = register_framebuffer(ud->fbinfo); + if (rc) { + dev_err(dev, "Could not register frame buffer\n"); + goto fail; + } + + /* + * Tell the log we are here + */ + dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u)\n", + ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres, + ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual); + + /* + * Success + */ + return 0; + +fail: + ubicom32vfb_release(dev); + return rc; +} + +/* + * ubicom32vfb_platform_remove + */ +static int ubicom32vfb_platform_remove(struct platform_device *pdev) +{ + dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n"); + return ubicom32vfb_release(&pdev->dev); +} + +static struct platform_driver ubicom32vfb_platform_driver = { + .probe = ubicom32vfb_platform_probe, + .remove = ubicom32vfb_platform_remove, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +#ifndef MODULE +/* + * ubicom32vfb_setup + * Process kernel boot options + */ +static int __init ubicom32vfb_setup(char *options) +{ + char *this_opt; + + if (!options || !*options) { + return 0; + } + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) { + continue; + } + + if (!strncmp(this_opt, "vram_size=", 10)) { + vram_size = simple_strtoul(this_opt + 10, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "bgr=", 4)) { + bgr = simple_strtoul(this_opt + 4, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "xres=", 5)) { + xres = simple_strtoul(this_opt + 5, NULL, 0); + continue; + } + + if (!strncmp(this_opt, "yres=", 5)) { + yres = simple_strtoul(this_opt + 5, NULL, 0); + continue; + } + } + return 0; +} +#endif /* MODULE */ + +/* + * ubicom32vfb_init + */ +static int __devinit ubicom32vfb_init(void) +{ + int ret; + +#ifndef MODULE + /* + * Get kernel boot options (in 'video=ubicom32vfb:') + */ + char *option = NULL; + + if (fb_get_options(DRIVER_NAME, &option)) { + return -ENODEV; + } + ubicom32vfb_setup(option); +#endif /* MODULE */ + + ret = platform_driver_register(&ubicom32vfb_platform_driver); + +#ifdef CONFIG_FB_UBICOM32_VIRTUAL_NOAUTO + return ret; +#else + if (!ret) { + ubicom32vfb_platform_device = platform_device_alloc(DRIVER_NAME, 0); + + if (ubicom32vfb_platform_device) + ret = platform_device_add(ubicom32vfb_platform_device); + else + ret = -ENOMEM; + + if (ret) { + platform_device_put(ubicom32vfb_platform_device); + platform_driver_unregister(&ubicom32vfb_platform_driver); + } + } + + return ret; +#endif +} +module_init(ubicom32vfb_init); + +/* + * ubicom32vfb_exit + */ +static void __exit ubicom32vfb_exit(void) +{ + platform_device_unregister(ubicom32vfb_platform_device); + platform_driver_unregister(&ubicom32vfb_platform_driver); +} +module_exit(ubicom32vfb_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); +MODULE_DESCRIPTION(DRIVER_DESCRIPTION); -- cgit v1.2.3