diff options
Diffstat (limited to 'target/linux')
8 files changed, 348 insertions, 0 deletions
diff --git a/target/linux/ar71xx/config-2.6.30 b/target/linux/ar71xx/config-2.6.30 index 357913468..33bd591d6 100644 --- a/target/linux/ar71xx/config-2.6.30 +++ b/target/linux/ar71xx/config-2.6.30 @@ -102,6 +102,7 @@ CONFIG_GENERIC_FIND_NEXT_BIT=y CONFIG_GENERIC_GPIO=y CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y CONFIG_GPIOLIB=y +# CONFIG_GPIO_NXP_74HC153 is not set CONFIG_GPIO_PCF857X=y CONFIG_GPIO_SYSFS=y CONFIG_HARDWARE_WATCHPOINTS=y diff --git a/target/linux/ar71xx/config-2.6.31 b/target/linux/ar71xx/config-2.6.31 index 5c9affa74..848bf20d1 100644 --- a/target/linux/ar71xx/config-2.6.31 +++ b/target/linux/ar71xx/config-2.6.31 @@ -105,6 +105,7 @@ CONFIG_GENERIC_FIND_NEXT_BIT=y CONFIG_GENERIC_GPIO=y CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y CONFIG_GPIOLIB=y +# CONFIG_GPIO_NXP_74HC153 is not set CONFIG_GPIO_PCF857X=y CONFIG_GPIO_SYSFS=y CONFIG_HARDWARE_WATCHPOINTS=y diff --git a/target/linux/ar71xx/config-2.6.32 b/target/linux/ar71xx/config-2.6.32 index a4ac682ef..5c1559273 100644 --- a/target/linux/ar71xx/config-2.6.32 +++ b/target/linux/ar71xx/config-2.6.32 @@ -107,6 +107,7 @@ CONFIG_GENERIC_GPIO=y CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y CONFIG_GPIOLIB=y # CONFIG_GPIO_MC33880 is not set +# CONFIG_GPIO_NXP_74HC153 is not set CONFIG_GPIO_PCF857X=y CONFIG_GPIO_SYSFS=y CONFIG_HARDWARE_WATCHPOINTS=y diff --git a/target/linux/ar71xx/files/drivers/gpio/nxp_74hc153.c b/target/linux/ar71xx/files/drivers/gpio/nxp_74hc153.c new file mode 100644 index 000000000..b4f1662ae --- /dev/null +++ b/target/linux/ar71xx/files/drivers/gpio/nxp_74hc153.c @@ -0,0 +1,246 @@ +/* + * NXP 74HC153 - Dual 4-input multiplexer GPIO driver + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <linux/platform_device.h> +#include <linux/nxp_74hc153.h> + +#define NXP_74HC153_NUM_GPIOS 8 +#define NXP_74HC153_S0_MASK 0x1 +#define NXP_74HC153_S1_MASK 0x2 +#define NXP_74HC153_BANK_MASK 0x4 + +struct nxp_74hc153_chip { + struct device *parent; + struct gpio_chip gpio_chip; + struct mutex lock; +}; + +static struct nxp_74hc153_chip *gpio_to_nxp(struct gpio_chip *gc) +{ + return container_of(gc, struct nxp_74hc153_chip, gpio_chip); +} + +static int nxp_74hc153_direction_input(struct gpio_chip *gc, unsigned offset) +{ + return 0; +} + +static int nxp_74hc153_direction_output(struct gpio_chip *gc, + unsigned offset, int val) +{ + return -EINVAL; +} + +static int nxp_74hc153_get_value(struct gpio_chip *gc, unsigned offset) +{ + struct nxp_74hc153_chip *nxp; + struct nxp_74hc153_platform_data *pdata; + unsigned s0; + unsigned s1; + unsigned pin; + int ret; + + nxp = gpio_to_nxp(gc); + pdata = nxp->parent->platform_data; + + s0 = !!(offset & NXP_74HC153_S0_MASK); + s1 = !!(offset & NXP_74HC153_S1_MASK); + pin = (offset & NXP_74HC153_BANK_MASK) ? pdata->gpio_pin_2y + : pdata->gpio_pin_1y; + + mutex_lock(&nxp->lock); + gpio_set_value(pdata->gpio_pin_s0, s0); + gpio_set_value(pdata->gpio_pin_s1, s1); + ret = gpio_get_value(pin); + mutex_unlock(&nxp->lock); + + return ret; +} + +static void nxp_74hc153_set_value(struct gpio_chip *gc, + unsigned offset, int val) +{ + /* not supported */ +} + +static int __devinit nxp_74hc153_probe(struct platform_device *pdev) +{ + struct nxp_74hc153_platform_data *pdata; + struct nxp_74hc153_chip *nxp; + struct gpio_chip *gc; + int err; + + pdata = pdev->dev.platform_data; + if (pdata == NULL) { + dev_dbg(&pdev->dev, "no platform data specified\n"); + return -EINVAL; + } + + nxp = kzalloc(sizeof(struct nxp_74hc153_chip), GFP_KERNEL); + if (nxp == NULL) { + dev_err(&pdev->dev, "no memory for private data\n"); + return -ENOMEM; + } + + err = gpio_request(pdata->gpio_pin_s0, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_s0, err); + goto err_free_nxp; + } + + err = gpio_request(pdata->gpio_pin_s1, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_s1, err); + goto err_free_s0; + } + + err = gpio_request(pdata->gpio_pin_1y, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_1y, err); + goto err_free_s1; + } + + err = gpio_request(pdata->gpio_pin_2y, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_2y, err); + goto err_free_1y; + } + + err = gpio_direction_output(pdata->gpio_pin_s0, 0); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_s0, err); + goto err_free_2y; + } + + err = gpio_direction_output(pdata->gpio_pin_s1, 0); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_s1, err); + goto err_free_2y; + } + + err = gpio_direction_input(pdata->gpio_pin_1y); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_1y, err); + goto err_free_2y; + } + + err = gpio_direction_input(pdata->gpio_pin_2y); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_2y, err); + goto err_free_2y; + } + + nxp->parent = &pdev->dev; + mutex_init(&nxp->lock); + + gc = &nxp->gpio_chip; + + gc->direction_input = nxp_74hc153_direction_input; + gc->direction_output = nxp_74hc153_direction_output; + gc->get = nxp_74hc153_get_value; + gc->set = nxp_74hc153_set_value; + gc->can_sleep = 1; + + gc->base = pdata->gpio_base; + gc->ngpio = NXP_74HC153_NUM_GPIOS; + gc->label = dev_name(nxp->parent); + gc->dev = nxp->parent; + gc->owner = THIS_MODULE; + + err = gpiochip_add(&nxp->gpio_chip); + if (err) { + dev_err(&pdev->dev, "unable to add gpio chip, err=%d\n", err); + goto err_free_2y; + } + + platform_set_drvdata(pdev, nxp); + return 0; + + err_free_2y: + gpio_free(pdata->gpio_pin_2y); + err_free_1y: + gpio_free(pdata->gpio_pin_1y); + err_free_s1: + gpio_free(pdata->gpio_pin_s1); + err_free_s0: + gpio_free(pdata->gpio_pin_s0); + err_free_nxp: + kfree(nxp); + return err; +} + +static int nxp_74hc153_remove(struct platform_device *pdev) +{ + struct nxp_74hc153_chip *nxp = platform_get_drvdata(pdev); + struct nxp_74hc153_platform_data *pdata = pdev->dev.platform_data; + + if (nxp) { + int err; + + err = gpiochip_remove(&nxp->gpio_chip); + if (err) { + dev_err(&pdev->dev, + "unable to remove gpio chip, err=%d\n", + err); + return err; + } + + gpio_free(pdata->gpio_pin_2y); + gpio_free(pdata->gpio_pin_1y); + gpio_free(pdata->gpio_pin_s1); + gpio_free(pdata->gpio_pin_s0); + + kfree(nxp); + platform_set_drvdata(pdev, NULL); + } + + return 0; +} + +static struct platform_driver nxp_74hc153_driver = { + .probe = nxp_74hc153_probe, + .remove = __devexit_p(nxp_74hc153_remove), + .driver = { + .name = NXP_74HC153_DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init nxp_74hc153_init(void) +{ + return platform_driver_register(&nxp_74hc153_driver); +} +subsys_initcall(nxp_74hc153_init); + +static void __exit nxp_74hc153_exit(void) +{ + platform_driver_unregister(&nxp_74hc153_driver); +} +module_exit(nxp_74hc153_exit); + +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_DESCRIPTION("GPIO expander driver for NXP 74HC153"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" NXP_74HC153_DRIVER_NAME); diff --git a/target/linux/ar71xx/files/include/linux/nxp_74hc153.h b/target/linux/ar71xx/files/include/linux/nxp_74hc153.h new file mode 100644 index 000000000..20b8845e5 --- /dev/null +++ b/target/linux/ar71xx/files/include/linux/nxp_74hc153.h @@ -0,0 +1,24 @@ +/* + * NXP 74HC153 - Dual 4-input multiplexer defines + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _NXP_74HC153_H +#define _NXP_74HC153_H + +#define NXP_74HC153_DRIVER_NAME "nxp-74hc153" + +struct nxp_74hc153_platform_data { + unsigned gpio_base; + unsigned gpio_pin_s0; + unsigned gpio_pin_s1; + unsigned gpio_pin_1y; + unsigned gpio_pin_2y; +}; + +#endif /* _NXP_74HC153_H */ diff --git a/target/linux/ar71xx/patches-2.6.30/206-nxp-74hc153-gpio-chip-driver.patch b/target/linux/ar71xx/patches-2.6.30/206-nxp-74hc153-gpio-chip-driver.patch new file mode 100644 index 000000000..0f1613c84 --- /dev/null +++ b/target/linux/ar71xx/patches-2.6.30/206-nxp-74hc153-gpio-chip-driver.patch @@ -0,0 +1,25 @@ +--- a/drivers/gpio/Kconfig ++++ b/drivers/gpio/Kconfig +@@ -176,4 +176,12 @@ config GPIO_MCP23S08 + SPI driver for Microchip MCP23S08 I/O expander. This provides + a GPIO interface supporting inputs and outputs. + ++comment "Other GPIO expanders" ++ ++config GPIO_NXP_74HC153 ++ tristate "NXP 74HC153 Dual 4-input multiplexer" ++ help ++ Platform driver for NXP 74HC153 Dual 4-input Multiplexer. This ++ provides a GPIO interface supporting inputs. ++ + endif +--- a/drivers/gpio/Makefile ++++ b/drivers/gpio/Makefile +@@ -7,6 +7,7 @@ obj-$(CONFIG_GPIOLIB) += gpiolib.o + obj-$(CONFIG_GPIO_MAX7301) += max7301.o + obj-$(CONFIG_GPIO_MAX732X) += max732x.o + obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o ++obj-$(CONFIG_GPIO_NXP_74HC153) += nxp_74hc153.o + obj-$(CONFIG_GPIO_PCA953X) += pca953x.o + obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o + obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o diff --git a/target/linux/ar71xx/patches-2.6.31/206-nxp-74hc153-gpio-chip-driver.patch b/target/linux/ar71xx/patches-2.6.31/206-nxp-74hc153-gpio-chip-driver.patch new file mode 100644 index 000000000..c722f34e8 --- /dev/null +++ b/target/linux/ar71xx/patches-2.6.31/206-nxp-74hc153-gpio-chip-driver.patch @@ -0,0 +1,25 @@ +--- a/drivers/gpio/Kconfig ++++ b/drivers/gpio/Kconfig +@@ -188,4 +188,12 @@ config GPIO_MCP23S08 + SPI driver for Microchip MCP23S08 I/O expander. This provides + a GPIO interface supporting inputs and outputs. + ++comment "Other GPIO expanders" ++ ++config GPIO_NXP_74HC153 ++ tristate "NXP 74HC153 Dual 4-input multiplexer" ++ help ++ Platform driver for NXP 74HC153 Dual 4-input Multiplexer. This ++ provides a GPIO interface supporting inputs. ++ + endif +--- a/drivers/gpio/Makefile ++++ b/drivers/gpio/Makefile +@@ -7,6 +7,7 @@ obj-$(CONFIG_GPIOLIB) += gpiolib.o + obj-$(CONFIG_GPIO_MAX7301) += max7301.o + obj-$(CONFIG_GPIO_MAX732X) += max732x.o + obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o ++obj-$(CONFIG_GPIO_NXP_74HC153) += nxp_74hc153.o + obj-$(CONFIG_GPIO_PCA953X) += pca953x.o + obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o + obj-$(CONFIG_GPIO_PL061) += pl061.o diff --git a/target/linux/ar71xx/patches-2.6.32/206-nxp-74hc153-gpio-chip-driver.patch b/target/linux/ar71xx/patches-2.6.32/206-nxp-74hc153-gpio-chip-driver.patch new file mode 100644 index 000000000..1192d99ee --- /dev/null +++ b/target/linux/ar71xx/patches-2.6.32/206-nxp-74hc153-gpio-chip-driver.patch @@ -0,0 +1,25 @@ +--- a/drivers/gpio/Kconfig ++++ b/drivers/gpio/Kconfig +@@ -230,4 +230,12 @@ config GPIO_UCB1400 + To compile this driver as a module, choose M here: the + module will be called ucb1400_gpio. + ++comment "Other GPIO expanders" ++ ++config GPIO_NXP_74HC153 ++ tristate "NXP 74HC153 Dual 4-input multiplexer" ++ help ++ Platform driver for NXP 74HC153 Dual 4-input Multiplexer. This ++ provides a GPIO interface supporting inputs. ++ + endif +--- a/drivers/gpio/Makefile ++++ b/drivers/gpio/Makefile +@@ -10,6 +10,7 @@ obj-$(CONFIG_GPIO_MAX7301) += max7301.o + obj-$(CONFIG_GPIO_MAX732X) += max732x.o + obj-$(CONFIG_GPIO_MC33880) += mc33880.o + obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o ++obj-$(CONFIG_GPIO_NXP_74HC153) += nxp_74hc153.o + obj-$(CONFIG_GPIO_PCA953X) += pca953x.o + obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o + obj-$(CONFIG_GPIO_PL061) += pl061.o |