diff options
Diffstat (limited to 'target/linux/ar71xx/patches-4.1/451-gpio-74x164-improve-platform-device-support.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-4.1/451-gpio-74x164-improve-platform-device-support.patch | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/target/linux/ar71xx/patches-4.1/451-gpio-74x164-improve-platform-device-support.patch b/target/linux/ar71xx/patches-4.1/451-gpio-74x164-improve-platform-device-support.patch deleted file mode 100644 index 95e5b5a958..0000000000 --- a/target/linux/ar71xx/patches-4.1/451-gpio-74x164-improve-platform-device-support.patch +++ /dev/null @@ -1,111 +0,0 @@ ---- a/drivers/gpio/gpio-74x164.c -+++ b/drivers/gpio/gpio-74x164.c -@@ -12,6 +12,7 @@ - #include <linux/init.h> - #include <linux/mutex.h> - #include <linux/spi/spi.h> -+#include <linux/spi/74x164.h> - #include <linux/gpio.h> - #include <linux/of_gpio.h> - #include <linux/slab.h> -@@ -107,8 +108,18 @@ static int gen_74x164_direction_output(s - static int gen_74x164_probe(struct spi_device *spi) - { - struct gen_74x164_chip *chip; -+ struct gen_74x164_chip_platform_data *pdata; -+ struct device_node *np; - int ret; - -+ pdata = spi->dev.platform_data; -+ np = spi->dev.of_node; -+ -+ if (!np && !pdata) { -+ dev_err(&spi->dev, "No configuration data available.\n"); -+ return -EINVAL; -+ } -+ - /* - * bits_per_word cannot be configured in platform data - */ -@@ -130,18 +141,28 @@ static int gen_74x164_probe(struct spi_d - chip->gpio_chip.set = gen_74x164_set_value; - chip->gpio_chip.base = -1; - -- if (of_property_read_u32(spi->dev.of_node, "registers-number", -- &chip->registers)) { -- dev_err(&spi->dev, -- "Missing registers-number property in the DT.\n"); -- return -EINVAL; -+ if (np) { -+ if (of_property_read_u32(spi->dev.of_node, "registers-number", &chip->registers)) { -+ dev_err(&spi->dev, "Missing registers-number property in the DT.\n"); -+ ret = -EINVAL; -+ goto exit_destroy; -+ } -+ } else if (pdata) { -+ chip->gpio_chip.base = pdata->base; -+ chip->registers = pdata->num_registers; - } - -+ if (!chip->registers) -+ chip->registers = 1; -+ - chip->gpio_chip.ngpio = GEN_74X164_NUMBER_GPIOS * chip->registers; - chip->buffer = devm_kzalloc(&spi->dev, chip->registers, GFP_KERNEL); - if (!chip->buffer) - return -ENOMEM; - -+ if (pdata && pdata->init_data) -+ memcpy(chip->buffer, pdata->init_data, chip->registers); -+ - chip->gpio_chip.can_sleep = true; - chip->gpio_chip.dev = &spi->dev; - chip->gpio_chip.owner = THIS_MODULE; -@@ -174,17 +195,19 @@ static int gen_74x164_remove(struct spi_ - return 0; - } - -+#ifdef CONFIG_OF - static const struct of_device_id gen_74x164_dt_ids[] = { - { .compatible = "fairchild,74hc595" }, - {}, - }; - MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids); -+#endif /* CONFIG_OF */ - - static struct spi_driver gen_74x164_driver = { - .driver = { - .name = "74x164", - .owner = THIS_MODULE, -- .of_match_table = gen_74x164_dt_ids, -+ .of_match_table = of_match_ptr(gen_74x164_dt_ids), - }, - .probe = gen_74x164_probe, - .remove = gen_74x164_remove, ---- /dev/null -+++ b/include/linux/spi/74x164.h -@@ -0,0 +1,13 @@ -+#ifndef LINUX_SPI_74X164_H -+#define LINUX_SPI_74X164_H -+ -+struct gen_74x164_chip_platform_data { -+ /* number assigned to the first GPIO */ -+ unsigned base; -+ /* number of chained registers */ -+ unsigned num_registers; -+ /* address of a buffer containing initial data */ -+ u8 *init_data; -+}; -+ -+#endif ---- a/drivers/gpio/Kconfig -+++ b/drivers/gpio/Kconfig -@@ -941,7 +941,7 @@ menu "SPI GPIO expanders" - - config GPIO_74X164 - tristate "74x164 serial-in/parallel-out 8-bits shift register" -- depends on SPI_MASTER && OF -+ depends on SPI_MASTER - help - Driver for 74x164 compatible serial-in/parallel-out 8-outputs - shift registers. This driver can be used to provide access |