pwm: atmel-tcb: Drop duplicated tracking of per-channel data

Per-channel data is tracked using struct pwm_device::chip_data and
struct atmel_tcb_pwm_chip::pwms[]. Simplify by using the latter
consistently.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c
index 36f7ea3..bea622f 100644 (file)
--- a/drivers/pwm/pwm-atmel-tcb.c
+++ b/drivers/pwm/pwm-atmel-tcb.c
@@ -72,7 +72,8 @@ static int atmel_tcb_pwm_set_polarity(struct pwm_chip *chip,
                                      struct pwm_device *pwm,
                                      enum pwm_polarity polarity)
 {
-       struct atmel_tcb_pwm_device *tcbpwm = pwm_get_chip_data(pwm);
+       struct atmel_tcb_pwm_chip *tcbpwmc = to_tcb_chip(chip);
+       struct atmel_tcb_pwm_device *tcbpwm = tcbpwmc->pwms[pwm->hwpwm];
 
        tcbpwm->polarity = polarity;
 
@@ -97,7 +98,6 @@ static int atmel_tcb_pwm_request(struct pwm_chip *chip,
                return ret;
        }
 
-       pwm_set_chip_data(pwm, tcbpwm);
        tcbpwm->polarity = PWM_POLARITY_NORMAL;
        tcbpwm->duty = 0;
        tcbpwm->period = 0;
@@ -139,7 +139,7 @@ static int atmel_tcb_pwm_request(struct pwm_chip *chip,
 static void atmel_tcb_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
 {
        struct atmel_tcb_pwm_chip *tcbpwmc = to_tcb_chip(chip);
-       struct atmel_tcb_pwm_device *tcbpwm = pwm_get_chip_data(pwm);
+       struct atmel_tcb_pwm_device *tcbpwm = tcbpwmc->pwms[pwm->hwpwm];
 
        clk_disable_unprepare(tcbpwmc->clk);
        tcbpwmc->pwms[pwm->hwpwm] = NULL;
@@ -149,7 +149,7 @@ static void atmel_tcb_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
 static void atmel_tcb_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 {
        struct atmel_tcb_pwm_chip *tcbpwmc = to_tcb_chip(chip);
-       struct atmel_tcb_pwm_device *tcbpwm = pwm_get_chip_data(pwm);
+       struct atmel_tcb_pwm_device *tcbpwm = tcbpwmc->pwms[pwm->hwpwm];
        unsigned cmr;
        enum pwm_polarity polarity = tcbpwm->polarity;
 
@@ -206,7 +206,7 @@ static void atmel_tcb_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 static int atmel_tcb_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 {
        struct atmel_tcb_pwm_chip *tcbpwmc = to_tcb_chip(chip);
-       struct atmel_tcb_pwm_device *tcbpwm = pwm_get_chip_data(pwm);
+       struct atmel_tcb_pwm_device *tcbpwm = tcbpwmc->pwms[pwm->hwpwm];
        u32 cmr;
        enum pwm_polarity polarity = tcbpwm->polarity;
 
@@ -291,7 +291,7 @@ static int atmel_tcb_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
                                int duty_ns, int period_ns)
 {
        struct atmel_tcb_pwm_chip *tcbpwmc = to_tcb_chip(chip);
-       struct atmel_tcb_pwm_device *tcbpwm = pwm_get_chip_data(pwm);
+       struct atmel_tcb_pwm_device *tcbpwm = tcbpwmc->pwms[pwm->hwpwm];
        struct atmel_tcb_pwm_device *atcbpwm = NULL;
        int i = 0;
        int slowclk = 0;