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Subject[PATCH v2 12/16] pwm: atmel: add pwm capabilities
Date
Add pwm capabilities to Atmel PWM controllers.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/pwm/pwm-atmel.c | 58 +++++++++++++++++++++++++++++++------------------
1 file changed, 37 insertions(+), 21 deletions(-)

diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c
index 32427d2b7877..e879d5459b55 100644
--- a/drivers/pwm/pwm-atmel.c
+++ b/drivers/pwm/pwm-atmel.c
@@ -65,6 +65,11 @@ struct atmel_pwm_registers {
u8 duty_upd;
};

+struct atmel_pwm_data {
+ struct atmel_pwm_registers regs;
+ struct pwm_caps caps;
+};
+
struct atmel_pwm_chip {
struct pwm_chip chip;
struct clk *clk;
@@ -277,27 +282,37 @@ static const struct pwm_ops atmel_pwm_ops = {
.owner = THIS_MODULE,
};

-static const struct atmel_pwm_registers atmel_pwm_regs_v1 = {
- .period = PWMV1_CPRD,
- .period_upd = PWMV1_CUPD,
- .duty = PWMV1_CDTY,
- .duty_upd = PWMV1_CUPD,
+static const struct atmel_pwm_data atmel_pwm_data_v1 = {
+ .regs = {
+ .period = PWMV1_CPRD,
+ .period_upd = PWMV1_CUPD,
+ .duty = PWMV1_CDTY,
+ .duty_upd = PWMV1_CUPD,
+ },
+ .caps = {
+ .modes = PWM_MODE_NORMAL,
+ },
};

-static const struct atmel_pwm_registers atmel_pwm_regs_v2 = {
- .period = PWMV2_CPRD,
- .period_upd = PWMV2_CPRDUPD,
- .duty = PWMV2_CDTY,
- .duty_upd = PWMV2_CDTYUPD,
+static const struct atmel_pwm_data atmel_pwm_data_v2 = {
+ .regs = {
+ .period = PWMV2_CPRD,
+ .period_upd = PWMV2_CPRDUPD,
+ .duty = PWMV2_CDTY,
+ .duty_upd = PWMV2_CDTYUPD,
+ },
+ .caps = {
+ .modes = PWM_MODE_NORMAL | PWM_MODE_COMPLEMENTARY,
+ },
};

static const struct platform_device_id atmel_pwm_devtypes[] = {
{
.name = "at91sam9rl-pwm",
- .driver_data = (kernel_ulong_t)&atmel_pwm_regs_v1,
+ .driver_data = (kernel_ulong_t)&atmel_pwm_data_v1,
}, {
.name = "sama5d3-pwm",
- .driver_data = (kernel_ulong_t)&atmel_pwm_regs_v2,
+ .driver_data = (kernel_ulong_t)&atmel_pwm_data_v2,
}, {
/* sentinel */
},
@@ -307,20 +322,20 @@ MODULE_DEVICE_TABLE(platform, atmel_pwm_devtypes);
static const struct of_device_id atmel_pwm_dt_ids[] = {
{
.compatible = "atmel,at91sam9rl-pwm",
- .data = &atmel_pwm_regs_v1,
+ .data = &atmel_pwm_data_v1,
}, {
.compatible = "atmel,sama5d3-pwm",
- .data = &atmel_pwm_regs_v2,
+ .data = &atmel_pwm_data_v2,
}, {
.compatible = "atmel,sama5d2-pwm",
- .data = &atmel_pwm_regs_v2,
+ .data = &atmel_pwm_data_v2,
}, {
/* sentinel */
},
};
MODULE_DEVICE_TABLE(of, atmel_pwm_dt_ids);

-static inline const struct atmel_pwm_registers *
+static inline const struct atmel_pwm_data *
atmel_pwm_get_driver_data(struct platform_device *pdev)
{
const struct platform_device_id *id;
@@ -330,18 +345,18 @@ atmel_pwm_get_driver_data(struct platform_device *pdev)

id = platform_get_device_id(pdev);

- return (struct atmel_pwm_registers *)id->driver_data;
+ return (struct atmel_pwm_data *)id->driver_data;
}

static int atmel_pwm_probe(struct platform_device *pdev)
{
- const struct atmel_pwm_registers *regs;
+ const struct atmel_pwm_data *data;
struct atmel_pwm_chip *atmel_pwm;
struct resource *res;
int ret;

- regs = atmel_pwm_get_driver_data(pdev);
- if (!regs)
+ data = atmel_pwm_get_driver_data(pdev);
+ if (!data)
return -ENODEV;

atmel_pwm = devm_kzalloc(&pdev->dev, sizeof(*atmel_pwm), GFP_KERNEL);
@@ -365,9 +380,10 @@ static int atmel_pwm_probe(struct platform_device *pdev)

atmel_pwm->chip.dev = &pdev->dev;
atmel_pwm->chip.ops = &atmel_pwm_ops;
+ atmel_pwm->chip.caps = &data->caps;
atmel_pwm->chip.base = -1;
atmel_pwm->chip.npwm = 4;
- atmel_pwm->regs = regs;
+ atmel_pwm->regs = &data->regs;
atmel_pwm->updated_pwms = 0;
mutex_init(&atmel_pwm->isr_lock);

--
2.7.4
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