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ar71xx: fix platform device support in the gpio-74x164 driver

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Platform device support has been removed from the gpio-74x164
driver in 3.14. Restore that.

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

SVN-Revision: 45203
This commit is contained in:
Gabor Juhos 2015-03-31 21:31:36 +00:00
parent 9c5aa7c528
commit 36e10677df
1 changed files with 43 additions and 2 deletions
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45
target/linux/ar71xx/patches-3.18/451-gpio-74x164-improve-platform-device-support.patch
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@ -1,6 +1,14 @@
--- a/drivers/gpio/gpio-74x164.c
+++ b/drivers/gpio/gpio-74x164.c
@@ -107,8 +107,18 @@ static int gen_74x164_direction_output(s
@@ -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;
@ -19,7 +27,7 @@
/*
* bits_per_word cannot be configured in platform data
*/
@@ -130,18 +140,27 @@ static int gen_74x164_probe(struct spi_d
@@ -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;
@ -35,6 +43,7 @@
+ goto exit_destroy;
+ }
+ } else if (pdata) {
+ chip->gpio_chip.base = pdata->base;
+ chip->registers = pdata->num_registers;
}
@ -52,6 +61,27 @@
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 @@
@ -68,3 +98,14 @@
+};
+
+#endif
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -821,7 +821,7 @@ config GPIO_MC33880
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