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Date: Tue, 13 Jan 2015 08:00:29 +0100
From: Linus Walleij <linus.walleij@...aro.org>
To: Samuel Ortiz <sameo@...ux.intel.com>,
Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org
Cc: Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH] gpio: stmpe: enforce device tree only mode
Require that device tree be used with STMPE (all platforms use this)
and enforce OF_GPIO, then delete the platform data.
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
MFD: folks: please ACK this so I can funnel it through the GPIO
tree.
---
drivers/gpio/Kconfig | 1 +
drivers/gpio/gpio-stmpe.c | 23 +++--------------------
include/linux/mfd/stmpe.h | 16 ----------------
3 files changed, 4 insertions(+), 36 deletions(-)
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 633ec216e185..5b1821daa1bd 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -624,6 +624,7 @@ config GPIO_SX150X
config GPIO_STMPE
bool "STMPE GPIOs"
depends on MFD_STMPE
+ depends on OF_GPIO
select GPIOLIB_IRQCHIP
help
This enables support for the GPIOs found on the STMPE I/O
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 359536eaca0d..926502145492 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -30,7 +30,7 @@ struct stmpe_gpio {
struct stmpe *stmpe;
struct device *dev;
struct mutex irq_lock;
- unsigned norequest_mask;
+ u32 norequest_mask;
/* Caches of interrupt control registers for bus_lock */
u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
@@ -350,13 +350,10 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
struct device_node *np = pdev->dev.of_node;
- struct stmpe_gpio_platform_data *pdata;
struct stmpe_gpio *stmpe_gpio;
int ret;
int irq = 0;
- pdata = stmpe->pdata->gpio;
-
irq = platform_get_irq(pdev, 0);
stmpe_gpio = kzalloc(sizeof(struct stmpe_gpio), GFP_KERNEL);
@@ -370,19 +367,14 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
stmpe_gpio->chip = template_chip;
stmpe_gpio->chip.ngpio = stmpe->num_gpios;
stmpe_gpio->chip.dev = &pdev->dev;
-#ifdef CONFIG_OF
stmpe_gpio->chip.of_node = np;
-#endif
stmpe_gpio->chip.base = -1;
if (IS_ENABLED(CONFIG_DEBUG_FS))
stmpe_gpio->chip.dbg_show = stmpe_dbg_show;
- if (pdata)
- stmpe_gpio->norequest_mask = pdata->norequest_mask;
- else if (np)
- of_property_read_u32(np, "st,norequest-mask",
- &stmpe_gpio->norequest_mask);
+ of_property_read_u32(np, "st,norequest-mask",
+ &stmpe_gpio->norequest_mask);
if (irq < 0)
dev_info(&pdev->dev,
@@ -424,9 +416,6 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
NULL);
}
- if (pdata && pdata->setup)
- pdata->setup(stmpe, stmpe_gpio->chip.base);
-
platform_set_drvdata(pdev, stmpe_gpio);
return 0;
@@ -443,15 +432,9 @@ static int stmpe_gpio_remove(struct platform_device *pdev)
{
struct stmpe_gpio *stmpe_gpio = platform_get_drvdata(pdev);
struct stmpe *stmpe = stmpe_gpio->stmpe;
- struct stmpe_gpio_platform_data *pdata = stmpe->pdata->gpio;
-
- if (pdata && pdata->remove)
- pdata->remove(stmpe, stmpe_gpio->chip.base);
gpiochip_remove(&stmpe_gpio->chip);
-
stmpe_disable(stmpe, STMPE_BLOCK_GPIO);
-
kfree(stmpe_gpio);
return 0;
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index dd908fea8c5b..23a9722c8176 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -119,20 +119,6 @@ extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
/**
- * struct stmpe_gpio_platform_data - STMPE GPIO platform data
- * @norequest_mask: bitmask specifying which GPIOs should _not_ be
- * requestable due to different usage (e.g. touch, keypad)
- * STMPE_GPIO_NOREQ_* macros can be used here.
- * @setup: board specific setup callback.
- * @remove: board specific remove callback
- */
-struct stmpe_gpio_platform_data {
- unsigned norequest_mask;
- void (*setup)(struct stmpe *stmpe, unsigned gpio_base);
- void (*remove)(struct stmpe *stmpe, unsigned gpio_base);
-};
-
-/**
* struct stmpe_ts_platform_data - stmpe811 touch screen controller platform
* data
* @sample_time: ADC converstion time in number of clock.
@@ -183,7 +169,6 @@ struct stmpe_ts_platform_data {
* @irq_over_gpio: true if gpio is used to get irq
* @irq_gpio: gpio number over which irq will be requested (significant only if
* irq_over_gpio is true)
- * @gpio: GPIO-specific platform data
* @ts: touchscreen-specific platform data
*/
struct stmpe_platform_data {
@@ -195,7 +180,6 @@ struct stmpe_platform_data {
int irq_gpio;
int autosleep_timeout;
- struct stmpe_gpio_platform_data *gpio;
struct stmpe_ts_platform_data *ts;
};
--
1.9.3
--
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