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gpio: stmpe: use gpiochip data pointer

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This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2015-12-07 14:32:13 +01:00
parent 0b2c529a3b
commit b03c04a0aa
1 changed files with 12 additions and 17 deletions
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29
drivers/gpio/gpio-stmpe.c
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@ -36,14 +36,9 @@ struct stmpe_gpio {
u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
};
static inline struct stmpe_gpio *to_stmpe_gpio(struct gpio_chip *chip)
{
return container_of(chip, struct stmpe_gpio, chip);
}
static int stmpe_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(chip);
struct stmpe *stmpe = stmpe_gpio->stmpe;
u8 reg = stmpe->regs[STMPE_IDX_GPMR_LSB] - (offset / 8);
u8 mask = 1 << (offset % 8);
@ -58,7 +53,7 @@ static int stmpe_gpio_get(struct gpio_chip *chip, unsigned offset)
static void stmpe_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(chip);
struct stmpe *stmpe = stmpe_gpio->stmpe;
int which = val ? STMPE_IDX_GPSR_LSB : STMPE_IDX_GPCR_LSB;
u8 reg = stmpe->regs[which] - (offset / 8);
@ -77,7 +72,7 @@ static void stmpe_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
static int stmpe_gpio_direction_output(struct gpio_chip *chip,
unsigned offset, int val)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(chip);
struct stmpe *stmpe = stmpe_gpio->stmpe;
u8 reg = stmpe->regs[STMPE_IDX_GPDR_LSB] - (offset / 8);
u8 mask = 1 << (offset % 8);
@ -90,7 +85,7 @@ static int stmpe_gpio_direction_output(struct gpio_chip *chip,
static int stmpe_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(chip);
struct stmpe *stmpe = stmpe_gpio->stmpe;
u8 reg = stmpe->regs[STMPE_IDX_GPDR_LSB] - (offset / 8);
u8 mask = 1 << (offset % 8);
@ -100,7 +95,7 @@ static int stmpe_gpio_direction_input(struct gpio_chip *chip,
static int stmpe_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(chip);
struct stmpe *stmpe = stmpe_gpio->stmpe;
if (stmpe_gpio->norequest_mask & (1 << offset))
@ -123,7 +118,7 @@ static struct gpio_chip template_chip = {
static int stmpe_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@ -151,7 +146,7 @@ static int stmpe_gpio_irq_set_type(struct irq_data *d, unsigned int type)
static void stmpe_gpio_irq_lock(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
mutex_lock(&stmpe_gpio->irq_lock);
}
@ -159,7 +154,7 @@ static void stmpe_gpio_irq_lock(struct irq_data *d)
static void stmpe_gpio_irq_sync_unlock(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
struct stmpe *stmpe = stmpe_gpio->stmpe;
int num_banks = DIV_ROUND_UP(stmpe->num_gpios, 8);
static const u8 regmap[] = {
@ -193,7 +188,7 @@ static void stmpe_gpio_irq_sync_unlock(struct irq_data *d)
static void stmpe_gpio_irq_mask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@ -204,7 +199,7 @@ static void stmpe_gpio_irq_mask(struct irq_data *d)
static void stmpe_gpio_irq_unmask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
@ -216,7 +211,7 @@ static void stmpe_dbg_show_one(struct seq_file *s,
struct gpio_chip *gc,
unsigned offset, unsigned gpio)
{
struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(gc);
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
struct stmpe *stmpe = stmpe_gpio->stmpe;
const char *label = gpiochip_is_requested(gc, offset);
int num_banks = DIV_ROUND_UP(stmpe->num_gpios, 8);
@ -375,7 +370,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
if (ret)
goto out_free;
ret = gpiochip_add(&stmpe_gpio->chip);
ret = gpiochip_add_data(&stmpe_gpio->chip, stmpe_gpio);
if (ret) {
dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
goto out_disable;