s3c2442: R.I.P.

It is broken and it is not maintained by anyone since long time.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34767 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 835 deletions

diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c b/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c
deleted file mode 100644
index 87f0d6731..000000000
--- a/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c
+++ /dev/null
@@ -1,835 +0,0 @@
-/* Linux kernel driver for the tpo JBT6K74-AS LCM ASIC
- *
- * Copyright (C) 2006-2007 by Openmoko, Inc.
- * Author: Harald Welte <laforge@openmoko.org>,
- * 	   Stefan Schmidt <stefan@openmoko.org>
- * Copyright (C) 2008 by Harald Welte <laforge@openmoko.org>
- * Copyright (C) 2009 by Lars-Peter Clausen <lars@metafoo.de>
- * All rights reserved.
- *
- * This program 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 program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/workqueue.h>
-#include <linux/jbt6k74.h>
-#include <linux/fb.h>
-#include <linux/lcd.h>
-#include <linux/time.h>
-
-enum jbt_register {
-	JBT_REG_SLEEP_IN		= 0x10,
-	JBT_REG_SLEEP_OUT		= 0x11,
-
-	JBT_REG_DISPLAY_OFF		= 0x28,
-	JBT_REG_DISPLAY_ON		= 0x29,
-
-	JBT_REG_RGB_FORMAT		= 0x3a,
-	JBT_REG_QUAD_RATE		= 0x3b,
-
-	JBT_REG_POWER_ON_OFF		= 0xb0,
-	JBT_REG_BOOSTER_OP		= 0xb1,
-	JBT_REG_BOOSTER_MODE		= 0xb2,
-	JBT_REG_BOOSTER_FREQ		= 0xb3,
-	JBT_REG_OPAMP_SYSCLK		= 0xb4,
-	JBT_REG_VSC_VOLTAGE		= 0xb5,
-	JBT_REG_VCOM_VOLTAGE		= 0xb6,
-	JBT_REG_EXT_DISPL		= 0xb7,
-	JBT_REG_OUTPUT_CONTROL		= 0xb8,
-	JBT_REG_DCCLK_DCEV		= 0xb9,
-	JBT_REG_DISPLAY_MODE1		= 0xba,
-	JBT_REG_DISPLAY_MODE2		= 0xbb,
-	JBT_REG_DISPLAY_MODE		= 0xbc,
-	JBT_REG_ASW_SLEW		= 0xbd,
-	JBT_REG_DUMMY_DISPLAY		= 0xbe,
-	JBT_REG_DRIVE_SYSTEM		= 0xbf,
-
-	JBT_REG_SLEEP_OUT_FR_A		= 0xc0,
-	JBT_REG_SLEEP_OUT_FR_B		= 0xc1,
-	JBT_REG_SLEEP_OUT_FR_C		= 0xc2,
-	JBT_REG_SLEEP_IN_LCCNT_D	= 0xc3,
-	JBT_REG_SLEEP_IN_LCCNT_E	= 0xc4,
-	JBT_REG_SLEEP_IN_LCCNT_F	= 0xc5,
-	JBT_REG_SLEEP_IN_LCCNT_G	= 0xc6,
-
-	JBT_REG_GAMMA1_FINE_1		= 0xc7,
-	JBT_REG_GAMMA1_FINE_2		= 0xc8,
-	JBT_REG_GAMMA1_INCLINATION	= 0xc9,
-	JBT_REG_GAMMA1_BLUE_OFFSET	= 0xca,
-
-	/* VGA */
-	JBT_REG_BLANK_CONTROL		= 0xcf,
-	JBT_REG_BLANK_TH_TV		= 0xd0,
-	JBT_REG_CKV_ON_OFF		= 0xd1,
-	JBT_REG_CKV_1_2			= 0xd2,
-	JBT_REG_OEV_TIMING		= 0xd3,
-	JBT_REG_ASW_TIMING_1		= 0xd4,
-	JBT_REG_ASW_TIMING_2		= 0xd5,
-
-	/* QVGA */
-	JBT_REG_BLANK_CONTROL_QVGA	= 0xd6,
-	JBT_REG_BLANK_TH_TV_QVGA	= 0xd7,
-	JBT_REG_CKV_ON_OFF_QVGA		= 0xd8,
-	JBT_REG_CKV_1_2_QVGA		= 0xd9,
-	JBT_REG_OEV_TIMING_QVGA		= 0xde,
-	JBT_REG_ASW_TIMING_1_QVGA	= 0xdf,
-	JBT_REG_ASW_TIMING_2_QVGA	= 0xe0,
-
-
-	JBT_REG_HCLOCK_VGA		= 0xec,
-	JBT_REG_HCLOCK_QVGA		= 0xed,
-
-};
-
-enum jbt_resolution {
-	JBT_RESOLUTION_VGA,
-	JBT_RESOLUTION_QVGA,
-};
-
-enum jbt_power_mode {
-	JBT_POWER_MODE_DEEP_STANDBY,
-	JBT_POWER_MODE_SLEEP,
-	JBT_POWER_MODE_NORMAL,
-};
-
-static const char *jbt_power_mode_names[] = {
-	[JBT_POWER_MODE_DEEP_STANDBY]	= "deep-standby",
-	[JBT_POWER_MODE_SLEEP]		= "sleep",
-	[JBT_POWER_MODE_NORMAL]		= "normal",
-};
-
-static const char *jbt_resolution_names[] = {
-	[JBT_RESOLUTION_VGA] = "vga",
-	[JBT_RESOLUTION_QVGA] = "qvga",
-};
-
-struct jbt_info {
-	struct mutex lock;		/* protects this structure */
-	enum jbt_resolution resolution;
-	enum jbt_power_mode power_mode;
-	enum jbt_power_mode suspend_mode;
-	int suspended;
-	struct spi_device *spi_dev;
-	struct lcd_device *lcd_dev;
-	unsigned long last_sleep;
-	struct delayed_work blank_work;
-	int blank_mode;
-	u16 tx_buf[4];
-	u16 reg_cache[0xEE];
-};
-
-#define JBT_COMMAND	0x000
-#define JBT_DATA	0x100
-
-static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
-{
-	int rc;
-
-	jbt->tx_buf[0] = JBT_COMMAND | reg;
-	rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-	               1*sizeof(u16));
-	if (rc == 0)
-		jbt->reg_cache[reg] = 0;
-	else
-		dev_err(&jbt->spi_dev->dev, "jbt_reg_write_nodata spi_write ret %d\n",
-		       rc);
-
-	return rc;
-}
-
-
-static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data)
-{
-	int rc;
-
-	jbt->tx_buf[0] = JBT_COMMAND | reg;
-	jbt->tx_buf[1] = JBT_DATA | data;
-	rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-	               2*sizeof(u16));
-	if (rc == 0)
-		jbt->reg_cache[reg] = data;
-	else
-		dev_err(&jbt->spi_dev->dev, "jbt_reg_write spi_write ret %d\n", rc);
-
-	return rc;
-}
-
-static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data)
-{
-	int rc;
-
-	jbt->tx_buf[0] = JBT_COMMAND | reg;
-	jbt->tx_buf[1] = JBT_DATA | (data >> 8);
-	jbt->tx_buf[2] = JBT_DATA | (data & 0xff);
-
-	rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-	               3*sizeof(u16));
-	if (rc == 0)
-		jbt->reg_cache[reg] = data;
-	else
-		dev_err(&jbt->spi_dev->dev, "jbt_reg_write16 spi_write ret %d\n", rc);
-
-	return rc;
-}
-
-static int jbt_init_regs(struct jbt_info *jbt)
-{
-	int rc;
-
-	dev_dbg(&jbt->spi_dev->dev, "entering %cVGA mode\n",
-			jbt->resolution == JBT_RESOLUTION_QVGA ? 'Q' : ' ');
-
-	rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE1, 0x01);
-	rc |= jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE2, 0x00);
-	rc |= jbt_reg_write(jbt, JBT_REG_RGB_FORMAT, 0x60);
-	rc |= jbt_reg_write(jbt, JBT_REG_DRIVE_SYSTEM, 0x10);
-	rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_OP, 0x56);
-	rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_MODE, 0x33);
-	rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_FREQ, 0x11);
-	rc |= jbt_reg_write(jbt, JBT_REG_OPAMP_SYSCLK, 0x02);
-	rc |= jbt_reg_write(jbt, JBT_REG_VSC_VOLTAGE, 0x2b);
-	rc |= jbt_reg_write(jbt, JBT_REG_VCOM_VOLTAGE, 0x40);
-	rc |= jbt_reg_write(jbt, JBT_REG_EXT_DISPL, 0x03);
-	rc |= jbt_reg_write(jbt, JBT_REG_DCCLK_DCEV, 0x04);
-	/*
-	 * default of 0x02 in JBT_REG_ASW_SLEW responsible for 72Hz requirement
-	 * to avoid red / blue flicker
-	 */
-	rc |= jbt_reg_write(jbt, JBT_REG_ASW_SLEW, 0x04 | (1 << 5));
-	rc |= jbt_reg_write(jbt, JBT_REG_DUMMY_DISPLAY, 0x00);
-
-	rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_A, 0x11);
-	rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_B, 0x11);
-	rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_C, 0x11);
-	rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_D, 0x2040);
-	rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_E, 0x60c0);
-	rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_F, 0x1020);
-	rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_G, 0x60c0);
-
-	rc |= jbt_reg_write16(jbt, JBT_REG_GAMMA1_FINE_1, 0x5533);
-	rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_FINE_2, 0x00);
-	rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_INCLINATION, 0x00);
-	rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00);
-
-	if (jbt->resolution != JBT_RESOLUTION_QVGA) {
-		rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_VGA, 0x1f0);
-		rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL, 0x02);
-		rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV, 0x0804);
-
-		rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF, 0x01);
-		rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2, 0x0000);
-
-		rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING, 0x0d0e);
-		rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1, 0x11a4);
-		rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2, 0x0e);
-	} else {
-		rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_QVGA, 0x00ff);
-		rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL_QVGA, 0x02);
-		rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV_QVGA, 0x0804);
-
-		rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF_QVGA, 0x01);
-		rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2_QVGA, 0x0008);
-
-		rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING_QVGA, 0x050a);
-		rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1_QVGA, 0x0a19);
-		rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2_QVGA, 0x0a);
-	}
-
-	return rc ? -EIO : 0;
-}
-
-static int standby_to_sleep(struct jbt_info *jbt)
-{
-	int rc;
-
-	/* three times command zero */
-	rc = jbt_reg_write_nodata(jbt, 0x00);
-	mdelay(1);
-	rc |= jbt_reg_write_nodata(jbt, 0x00);
-	mdelay(1);
-	rc |= jbt_reg_write_nodata(jbt, 0x00);
-	mdelay(1);
-
-	/* deep standby out */
-	rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x11);
-	mdelay(1);
-	rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x28);
-
-	/* (re)initialize register set */
-	rc |= jbt_init_regs(jbt);
-
-	return rc ? -EIO : 0;
-}
-
-static int sleep_to_normal(struct jbt_info *jbt)
-{
-	int rc;
-
-	/* Make sure we are 120 ms after SLEEP_OUT */
-	if (time_before(jiffies, jbt->last_sleep))
-		mdelay(jiffies_to_msecs(jbt->last_sleep - jiffies));
-
-	if (jbt->resolution == JBT_RESOLUTION_VGA) {
-		/* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */
-		rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x80);
-
-		/* Quad mode off */
-		rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x00);
-	} else {
-		/* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */
-		rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x81);
-
-		/* Quad mode on */
-		rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x22);
-	}
-
-	/* AVDD on, XVDD on */
-	rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x16);
-
-	/* Output control */
-	rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0xfff9);
-
-	/* Turn on display */
-	rc |= jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON);
-
-	/* Sleep mode off */
-	rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT);
-	jbt->last_sleep = jiffies + msecs_to_jiffies(120);
-
-	/* Allow the booster and display controller to restart stably */
-	mdelay(5);
-
-	return rc ? -EIO : 0;
-}
-
-static int normal_to_sleep(struct jbt_info *jbt)
-{
-	int rc;
-
-	/* Make sure we are 120 ms after SLEEP_OUT */
-	while (time_before(jiffies, jbt->last_sleep))
-		cpu_relax();
-
-	rc = jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
-	rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0x8000 | 1 << 3);
-	rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_IN);
-	jbt->last_sleep = jiffies + msecs_to_jiffies(120);
-
-	/* Allow the internal circuits to stop automatically */
-	mdelay(5);
-
-	return rc ? -EIO : 0;
-}
-
-static int sleep_to_standby(struct jbt_info *jbt)
-{
-	return jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x00);
-}
-
-int jbt6k74_enter_power_mode(struct jbt_info *jbt, enum jbt_power_mode new_mode)
-{
-	struct jbt6k74_platform_data *pdata = jbt->spi_dev->dev.platform_data;
-	int rc = -EINVAL;
-
-	dev_dbg(&jbt->spi_dev->dev, "entering (old_state=%s, new_state=%s)\n",
-			jbt_power_mode_names[jbt->power_mode],
-			jbt_power_mode_names[new_mode]);
-
-	mutex_lock(&jbt->lock);
-
-	if (jbt->suspended) {
-		switch (new_mode) {
-		case JBT_POWER_MODE_DEEP_STANDBY:
-		case JBT_POWER_MODE_SLEEP:
-		case JBT_POWER_MODE_NORMAL:
-			rc = 0;
-			jbt->suspend_mode = new_mode;
-			break;
-		default:
-			break;
-		}
-	} else if (new_mode == JBT_POWER_MODE_NORMAL &&
-	           pdata->enable_pixel_clock) {
-		pdata->enable_pixel_clock(&jbt->spi_dev->dev, 1);
-	}
-
-	switch (jbt->power_mode) {
-	case JBT_POWER_MODE_DEEP_STANDBY:
-		switch (new_mode) {
-		case JBT_POWER_MODE_DEEP_STANDBY:
-			rc = 0;
-			break;
-		case JBT_POWER_MODE_SLEEP:
-			rc = standby_to_sleep(jbt);
-			break;
-		case JBT_POWER_MODE_NORMAL:
-			/* first transition into sleep */
-			rc = standby_to_sleep(jbt);
-			/* then transition into normal */
-			rc |= sleep_to_normal(jbt);
-			break;
-		}
-		break;
-	case JBT_POWER_MODE_SLEEP:
-		switch (new_mode) {
-		case JBT_POWER_MODE_SLEEP:
-			rc = 0;
-			break;
-		case JBT_POWER_MODE_DEEP_STANDBY:
-			rc = sleep_to_standby(jbt);
-			break;
-		case JBT_POWER_MODE_NORMAL:
-			rc = sleep_to_normal(jbt);
-			break;
-		}
-		break;
-	case JBT_POWER_MODE_NORMAL:
-		switch (new_mode) {
-		case JBT_POWER_MODE_NORMAL:
-			rc = 0;
-			break;
-		case JBT_POWER_MODE_DEEP_STANDBY:
-			/* first transition into sleep */
-			rc = normal_to_sleep(jbt);
-			/* then transition into deep standby */
-			rc |= sleep_to_standby(jbt);
-			break;
-		case JBT_POWER_MODE_SLEEP:
-			rc = normal_to_sleep(jbt);
-			break;
-		}
-	}
-
-	if (rc == 0) {
-		jbt->power_mode = new_mode;
-		if (new_mode != JBT_POWER_MODE_NORMAL &&
-		    pdata->enable_pixel_clock)
-			pdata->enable_pixel_clock(&jbt->spi_dev->dev, 0);
-	} else {
-		dev_err(&jbt->spi_dev->dev, "Failed enter state '%s')\n",
-				jbt_power_mode_names[new_mode]);
-	}
-
-	mutex_unlock(&jbt->lock);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(jbt6k74_enter_power_mode);
-
-int jbt6k74_set_resolution(struct jbt_info *jbt, enum jbt_resolution new_resolution) {
-	int rc = 0;
-	enum jbt_resolution old_resolution;
-
-	if (new_resolution != JBT_RESOLUTION_VGA &&
-	    new_resolution != JBT_RESOLUTION_QVGA)
-		return -EINVAL;
-
-	mutex_lock(&jbt->lock);
-
-	if (jbt->resolution == new_resolution)
-		goto out_unlock;
-
-	old_resolution = jbt->resolution;
-	jbt->resolution = new_resolution;
-
-	if (jbt->power_mode == JBT_POWER_MODE_NORMAL) {
-
-		/* first transition into sleep */
-		rc = normal_to_sleep(jbt);
-		/* second transition into deep standby */
-/*		rc |= sleep_to_standby(jbt);*/
-		/* third transition into sleep */
-/*		rc |= standby_to_sleep(jbt);*/
-		/* fourth transition into normal */
-		rc |= sleep_to_normal(jbt);
-
-		if (rc) {
-			jbt->resolution = old_resolution;
-			dev_err(&jbt->spi_dev->dev, "Failed to set resolution '%s')\n",
-			        jbt_resolution_names[new_resolution]);
-		}
-	}
-
-out_unlock:
-	mutex_unlock(&jbt->lock);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(jbt6k74_set_resolution);
-
-static ssize_t resolution_read(struct device *dev, struct device_attribute *attr,
-			  char *buf)
-{
-	struct jbt_info *jbt = dev_get_drvdata(dev);
-
-	if (jbt->resolution >= ARRAY_SIZE(jbt_resolution_names))
-		return -EIO;
-
-	return sprintf(buf, "%s\n", jbt_resolution_names[jbt->resolution]);
-}
-
-static ssize_t resolution_write(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	struct jbt_info *jbt = dev_get_drvdata(dev);
-	int i, rc;
-
-	for (i = 0; i < ARRAY_SIZE(jbt_resolution_names); i++) {
-		if (!strncmp(buf, jbt_resolution_names[i],
-		       strlen(jbt_resolution_names[i]))) {
-			rc = jbt6k74_set_resolution(jbt, i);
-			if (rc)
-				return rc;
-			return count;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static DEVICE_ATTR(resolution, 0644, resolution_read, resolution_write);
-
-static int reg_by_string(const char *name)
-{
-	if (!strcmp(name, "gamma_fine1"))
-		return JBT_REG_GAMMA1_FINE_1;
-	else if (!strcmp(name, "gamma_fine2"))
-		return JBT_REG_GAMMA1_FINE_2;
-	else if (!strcmp(name, "gamma_inclination"))
-		return JBT_REG_GAMMA1_INCLINATION;
-	else
-		return JBT_REG_GAMMA1_BLUE_OFFSET;
-}
-
-static ssize_t gamma_read(struct device *dev, struct device_attribute *attr,
-			  char *buf)
-{
-	struct jbt_info *jbt = dev_get_drvdata(dev);
-	int reg = reg_by_string(attr->attr.name);
-	u16 val;
-
-	mutex_lock(&jbt->lock);
-	val = jbt->reg_cache[reg];
-		mutex_unlock(&jbt->lock);
-
-	return sprintf(buf, "0x%04x\n", val);
-}
-
-static ssize_t gamma_write(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	struct jbt_info *jbt = dev_get_drvdata(dev);
-	int reg = reg_by_string(attr->attr.name);
-	unsigned long val = simple_strtoul(buf, NULL, 10);
-
-	dev_info(dev, "writing gama %lu\n", val & 0xff);
-
-	mutex_lock(&jbt->lock);
-	jbt_reg_write(jbt, reg, val & 0xff);
-	mutex_unlock(&jbt->lock);
-
-	return count;
-}
-
-static ssize_t reset_write(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	int rc;
-	struct jbt_info *jbt = dev_get_drvdata(dev);
-	struct jbt6k74_platform_data *pdata = jbt->spi_dev->dev.platform_data;
-
-	dev_info(dev, "reset\n");
-
-	mutex_lock(&jbt->lock);
-
-	/* hard reset the jbt6k74 */
-	(pdata->reset)(0, 0);
-	mdelay(1);
-	(pdata->reset)(0, 1);
-	mdelay(120);
-
-	rc = jbt_reg_write_nodata(jbt, 0x01);
-	if (rc < 0)
-		dev_err(&jbt->spi_dev->dev, "cannot soft reset\n");
-	mdelay(120);
-
-	mutex_unlock(&jbt->lock);
-
-	jbt6k74_enter_power_mode(jbt, jbt->power_mode);
-
-	return count;
-}
-
-static DEVICE_ATTR(gamma_fine1, 0644, gamma_read, gamma_write);
-static DEVICE_ATTR(gamma_fine2, 0644, gamma_read, gamma_write);
-static DEVICE_ATTR(gamma_inclination, 0644, gamma_read, gamma_write);
-static DEVICE_ATTR(gamma_blue_offset, 0644, gamma_read, gamma_write);
-static DEVICE_ATTR(reset, 0600, NULL, reset_write);
-
-static struct attribute *jbt_sysfs_entries[] = {
-	&dev_attr_resolution.attr,
-	&dev_attr_gamma_fine1.attr,
-	&dev_attr_gamma_fine2.attr,
-	&dev_attr_gamma_inclination.attr,
-	&dev_attr_gamma_blue_offset.attr,
-	&dev_attr_reset.attr,
-	NULL,
-};
-
-static struct attribute_group jbt_attr_group = {
-	.name	= NULL,
-	.attrs	= jbt_sysfs_entries,
-};
-
-/* FIXME: This in an ugly hack to delay display blanking.
-  When the jbt is in sleep mode it displays an all white screen and thus one
-  will a see a short flash.
-  By delaying the blanking we will give the backlight a chance to turn off and
-  thus avoid getting the flash */
-static void jbt_blank_worker(struct work_struct *work) {
-	struct jbt_info *jbt  = container_of(work, struct jbt_info,
-						blank_work.work);
-
-	switch (jbt->blank_mode) {
-	case FB_BLANK_NORMAL:
-		jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_SLEEP);
-		break;
-	case FB_BLANK_POWERDOWN:
-		jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY);
-		break;
-	default:
-		break;
-	}
-}
-
-static int jbt6k74_set_mode(struct lcd_device *ld, struct fb_videomode *m) {
-	int rc = -EINVAL;
-	struct jbt_info *jbt = dev_get_drvdata(&ld->dev);
-
-	if (m->xres == 240 && m->yres == 320) {
-		rc = jbt6k74_set_resolution(jbt, JBT_RESOLUTION_QVGA);
-	} else if (m->xres == 480 && m->yres == 640) {
-		rc = jbt6k74_set_resolution(jbt, JBT_RESOLUTION_VGA);
-	} else {
-		dev_err(&jbt->spi_dev->dev, "Unknown resolution. Entering sleep mode.\n");
-		jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_SLEEP);
-	}
-
-	return rc;
-}
-
-static int jbt6k74_set_power(struct lcd_device *ld, int power) {
-	int rc = -EINVAL;
-	struct jbt_info *jbt = dev_get_drvdata(&ld->dev);
-
-	jbt->blank_mode = power;
-	cancel_rearming_delayed_work(&jbt->blank_work);
-
-	switch (power) {
-	case FB_BLANK_UNBLANK:
-		dev_dbg(&jbt->spi_dev->dev, "unblank\n");
-		rc = jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL);
-		break;
-	case FB_BLANK_NORMAL:
-		dev_dbg(&jbt->spi_dev->dev, "blank\n");
-		rc = schedule_delayed_work(&jbt->blank_work, HZ);
-		break;
-	case FB_BLANK_POWERDOWN:
-		dev_dbg(&jbt->spi_dev->dev, "powerdown\n");
-		rc = schedule_delayed_work(&jbt->blank_work, HZ);
-		break;
-	default:
-		break;
-	}
-
-	return rc;
-}
-
-static int jbt6k74_get_power(struct lcd_device *ld) {
-	struct jbt_info *jbt = dev_get_drvdata(&ld->dev);
-
-	switch (jbt->power_mode) {
-        case JBT_POWER_MODE_NORMAL:
-		return FB_BLANK_UNBLANK;
-        case JBT_POWER_MODE_SLEEP:
-		return FB_BLANK_NORMAL;
-        default:
-		return JBT_POWER_MODE_DEEP_STANDBY;
-	}
-}
-
-struct lcd_ops jbt6k74_lcd_ops = {
-	.set_power = jbt6k74_set_power,
-	.get_power = jbt6k74_get_power,
-	.set_mode  = jbt6k74_set_mode,
-};
-
-/* linux device model infrastructure */
-
-static int __devinit jbt_probe(struct spi_device *spi)
-{
-	int rc;
-	struct jbt_info *jbt;
-	struct jbt6k74_platform_data *pdata = spi->dev.platform_data;
-
-	/* the controller doesn't have a MISO pin; we can't do detection */
-
-	spi->mode = SPI_CPOL | SPI_CPHA;
-	spi->bits_per_word = 9;
-
-	rc = spi_setup(spi);
-	if (rc < 0) {
-		dev_err(&spi->dev,
-			"error during spi_setup of jbt6k74 driver\n");
-		return rc;
-	}
-
-	jbt = kzalloc(sizeof(*jbt), GFP_KERNEL);
-	if (!jbt)
-		return -ENOMEM;
-
-	jbt->spi_dev = spi;
-
-	jbt->lcd_dev = lcd_device_register("jbt6k74-lcd", &spi->dev,
-	                   jbt, &jbt6k74_lcd_ops);
-
-	if (IS_ERR(jbt->lcd_dev)) {
-		rc = PTR_ERR(jbt->lcd_dev);
-		goto err_free_drvdata;
-	}
-
-	INIT_DELAYED_WORK(&jbt->blank_work, jbt_blank_worker);
-
-	jbt->resolution = JBT_RESOLUTION_VGA;
-	jbt->power_mode = JBT_POWER_MODE_DEEP_STANDBY;
-	jbt->last_sleep = jiffies + msecs_to_jiffies(120);
-	mutex_init(&jbt->lock);
-
-	dev_set_drvdata(&spi->dev, jbt);
-
-	rc = jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL);
-	if (rc < 0) {
-		dev_err(&spi->dev, "cannot enter NORMAL state\n");
-		goto err_unregister_lcd;
-	}
-
-	rc = sysfs_create_group(&spi->dev.kobj, &jbt_attr_group);
-	if (rc < 0) {
-		dev_err(&spi->dev, "cannot create sysfs group\n");
-		goto err_standby;
-	}
-
-	if (pdata->probe_completed)
-		(pdata->probe_completed)(&spi->dev);
-
-	return 0;
-
-err_standby:
-	jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY);
-err_unregister_lcd:
-	lcd_device_unregister(jbt->lcd_dev);
-err_free_drvdata:
-	dev_set_drvdata(&spi->dev, NULL);
-	kfree(jbt);
-
-	return rc;
-}
-
-static int __devexit jbt_remove(struct spi_device *spi)
-{
-	struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-
-	/* We don't want to switch off the display in case the user
-	 * accidentially unloads the module (whose use count normally is 0) */
-	jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL);
-
-	sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group);
-	dev_set_drvdata(&spi->dev, NULL);
-
-	lcd_device_unregister(jbt->lcd_dev);
-
-	kfree(jbt);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int jbt_suspend(struct spi_device *spi, pm_message_t state)
-{
-	struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-
-	jbt->suspend_mode = jbt->power_mode;
-
-	jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY);
-	jbt->suspended = 1;
-
-	dev_info(&spi->dev, "suspended\n");
-
-	return 0;
-}
-
-int jbt6k74_resume(struct spi_device *spi)
-{
-	struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-
-	jbt->suspended = 0;
-	jbt6k74_enter_power_mode(jbt, jbt->suspend_mode);
-
-	dev_info(&spi->dev, "resumed\n");
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(jbt6k74_resume);
-
-#else
-#define jbt_suspend	NULL
-#define jbt6k74_resume	NULL
-#endif
-
-static struct spi_driver jbt6k74_driver = {
-	.driver = {
-		.name	= "jbt6k74",
-		.owner	= THIS_MODULE,
-	},
-
-	.probe	 = jbt_probe,
-	.remove	 = __devexit_p(jbt_remove),
-	.suspend = jbt_suspend,
-	.resume	 = jbt6k74_resume,
-};
-
-static int __init jbt_init(void)
-{
-	return spi_register_driver(&jbt6k74_driver);
-}
-
-static void __exit jbt_exit(void)
-{
-	spi_unregister_driver(&jbt6k74_driver);
-}
-
-MODULE_DESCRIPTION("SPI driver for tpo JBT6K74-AS LCM control interface");
-MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
-MODULE_LICENSE("GPL");
-
-module_init(jbt_init);
-module_exit(jbt_exit);