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-rw-r--r--drivers/pwm/pwm-atmel.c6
-rw-r--r--drivers/pwm/pwm-bcm-iproc.c8
-rw-r--r--drivers/pwm/pwm-crc.c10
-rw-r--r--drivers/pwm/pwm-cros-ec.c8
-rw-r--r--drivers/pwm/pwm-dwc.c6
-rw-r--r--drivers/pwm/pwm-hibvt.c6
-rw-r--r--drivers/pwm/pwm-imx-tpm.c8
-rw-r--r--drivers/pwm/pwm-imx27.c8
-rw-r--r--drivers/pwm/pwm-intel-lgm.c6
-rw-r--r--drivers/pwm/pwm-iqs620a.c6
-rw-r--r--drivers/pwm/pwm-keembay.c6
-rw-r--r--drivers/pwm/pwm-lpss.c6
-rw-r--r--drivers/pwm/pwm-meson.c8
-rw-r--r--drivers/pwm/pwm-mtk-disp.c12
-rw-r--r--drivers/pwm/pwm-pca9685.c8
-rw-r--r--drivers/pwm/pwm-raspberrypi-poe.c8
-rw-r--r--drivers/pwm/pwm-rockchip.c12
-rw-r--r--drivers/pwm/pwm-sifive.c6
-rw-r--r--drivers/pwm/pwm-sl28cpld.c8
-rw-r--r--drivers/pwm/pwm-sprd.c8
-rw-r--r--drivers/pwm/pwm-stm32-lp.c8
-rw-r--r--drivers/pwm/pwm-sun4i.c12
-rw-r--r--drivers/pwm/pwm-sunplus.c6
-rw-r--r--drivers/pwm/pwm-visconti.c6
-rw-r--r--drivers/pwm/pwm-xilinx.c8
25 files changed, 122 insertions, 72 deletions
diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c
index 8e00a4286145..cdbc23649032 100644
--- a/drivers/pwm/pwm-atmel.c
+++ b/drivers/pwm/pwm-atmel.c
@@ -356,8 +356,8 @@ static int atmel_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void atmel_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int atmel_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);
u32 sr, cmr;
@@ -396,6 +396,8 @@ static void atmel_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->polarity = PWM_POLARITY_INVERSED;
else
state->polarity = PWM_POLARITY_NORMAL;
+
+ return 0;
}
static const struct pwm_ops atmel_pwm_ops = {
diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c
index 7251037d4dd5..97ec131eb7c1 100644
--- a/drivers/pwm/pwm-bcm-iproc.c
+++ b/drivers/pwm/pwm-bcm-iproc.c
@@ -68,8 +68,8 @@ static void iproc_pwmc_disable(struct iproc_pwmc *ip, unsigned int channel)
ndelay(400);
}
-static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct iproc_pwmc *ip = to_iproc_pwmc(chip);
u64 tmp, multi, rate;
@@ -91,7 +91,7 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
if (rate == 0) {
state->period = 0;
state->duty_cycle = 0;
- return;
+ return 0;
}
value = readl(ip->base + IPROC_PWM_PRESCALE_OFFSET);
@@ -107,6 +107,8 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
value = readl(ip->base + IPROC_PWM_DUTY_CYCLE_OFFSET(pwm->hwpwm));
tmp = (value & IPROC_PWM_PERIOD_MAX) * multi;
state->duty_cycle = div64_u64(tmp, rate);
+
+ return 0;
}
static int iproc_pwmc_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-crc.c b/drivers/pwm/pwm-crc.c
index 7b357d1cf642..4099850117ba 100644
--- a/drivers/pwm/pwm-crc.c
+++ b/drivers/pwm/pwm-crc.c
@@ -121,8 +121,8 @@ static int crc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void crc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int crc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct crystalcove_pwm *crc_pwm = to_crc_pwm(chip);
struct device *dev = crc_pwm->chip.dev;
@@ -132,13 +132,13 @@ static void crc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
error = regmap_read(crc_pwm->regmap, PWM0_CLK_DIV, &clk_div_reg);
if (error) {
dev_err(dev, "Error reading PWM0_CLK_DIV %d\n", error);
- return;
+ return 0;
}
error = regmap_read(crc_pwm->regmap, PWM0_DUTY_CYCLE, &duty_cycle_reg);
if (error) {
dev_err(dev, "Error reading PWM0_DUTY_CYCLE %d\n", error);
- return;
+ return 0;
}
clk_div = (clk_div_reg & ~PWM_OUTPUT_ENABLE) + 1;
@@ -149,6 +149,8 @@ static void crc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
DIV_ROUND_UP_ULL(duty_cycle_reg * state->period, PWM_MAX_LEVEL);
state->polarity = PWM_POLARITY_NORMAL;
state->enabled = !!(clk_div_reg & PWM_OUTPUT_ENABLE);
+
+ return 0;
}
static const struct pwm_ops crc_pwm_ops = {
diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
index 7f10f56c3eb6..11684edc0620 100644
--- a/drivers/pwm/pwm-cros-ec.c
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -183,8 +183,8 @@ static int cros_ec_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct cros_ec_pwm_device *ec_pwm = pwm_to_cros_ec_pwm(chip);
struct cros_ec_pwm *channel = pwm_get_chip_data(pwm);
@@ -193,7 +193,7 @@ static void cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
ret = cros_ec_pwm_get_duty(ec_pwm, pwm->hwpwm);
if (ret < 0) {
dev_err(chip->dev, "error getting initial duty: %d\n", ret);
- return;
+ return 0;
}
state->enabled = (ret > 0);
@@ -212,6 +212,8 @@ static void cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->duty_cycle = channel->duty_cycle;
else
state->duty_cycle = ret;
+
+ return 0;
}
static struct pwm_device *
diff --git a/drivers/pwm/pwm-dwc.c b/drivers/pwm/pwm-dwc.c
index 7568300bb11e..bd2308812096 100644
--- a/drivers/pwm/pwm-dwc.c
+++ b/drivers/pwm/pwm-dwc.c
@@ -163,8 +163,8 @@ static int dwc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void dwc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int dwc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct dwc_pwm *dwc = to_dwc_pwm(chip);
u64 duty, period;
@@ -188,6 +188,8 @@ static void dwc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->polarity = PWM_POLARITY_INVERSED;
pm_runtime_put_sync(chip->dev);
+
+ return 0;
}
static const struct pwm_ops dwc_pwm_ops = {
diff --git a/drivers/pwm/pwm-hibvt.c b/drivers/pwm/pwm-hibvt.c
index 333f1b18ff4e..12c05c155cab 100644
--- a/drivers/pwm/pwm-hibvt.c
+++ b/drivers/pwm/pwm-hibvt.c
@@ -128,8 +128,8 @@ static void hibvt_pwm_set_polarity(struct pwm_chip *chip,
PWM_POLARITY_MASK, (0x0 << PWM_POLARITY_SHIFT));
}
-static void hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct hibvt_pwm_chip *hi_pwm_chip = to_hibvt_pwm_chip(chip);
void __iomem *base;
@@ -146,6 +146,8 @@ static void hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
value = readl(base + PWM_CTRL_ADDR(pwm->hwpwm));
state->enabled = (PWM_ENABLE_MASK & value);
+
+ return 0;
}
static int hibvt_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c
index e5e7b7c339a8..ed1aad96fff0 100644
--- a/drivers/pwm/pwm-imx-tpm.c
+++ b/drivers/pwm/pwm-imx-tpm.c
@@ -132,9 +132,9 @@ static int pwm_imx_tpm_round_state(struct pwm_chip *chip,
return 0;
}
-static void pwm_imx_tpm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int pwm_imx_tpm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);
u32 rate, val, prescale;
@@ -164,6 +164,8 @@ static void pwm_imx_tpm_get_state(struct pwm_chip *chip,
/* get channel status */
state->enabled = FIELD_GET(PWM_IMX_TPM_CnSC_ELS, val) ? true : false;
+
+ return 0;
}
/* this function is supposed to be called with mutex hold */
diff --git a/drivers/pwm/pwm-imx27.c b/drivers/pwm/pwm-imx27.c
index ea91a2f81a9f..3a22c2fddc45 100644
--- a/drivers/pwm/pwm-imx27.c
+++ b/drivers/pwm/pwm-imx27.c
@@ -118,8 +118,8 @@ static void pwm_imx27_clk_disable_unprepare(struct pwm_imx27_chip *imx)
clk_disable_unprepare(imx->clk_ipg);
}
-static void pwm_imx27_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm, struct pwm_state *state)
+static int pwm_imx27_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm, struct pwm_state *state)
{
struct pwm_imx27_chip *imx = to_pwm_imx27_chip(chip);
u32 period, prescaler, pwm_clk, val;
@@ -128,7 +128,7 @@ static void pwm_imx27_get_state(struct pwm_chip *chip,
ret = pwm_imx27_clk_prepare_enable(imx);
if (ret < 0)
- return;
+ return 0;
val = readl(imx->mmio_base + MX3_PWMCR);
@@ -170,6 +170,8 @@ static void pwm_imx27_get_state(struct pwm_chip *chip,
state->duty_cycle = DIV_ROUND_UP_ULL(tmp, pwm_clk);
pwm_imx27_clk_disable_unprepare(imx);
+
+ return 0;
}
static void pwm_imx27_sw_reset(struct pwm_chip *chip)
diff --git a/drivers/pwm/pwm-intel-lgm.c b/drivers/pwm/pwm-intel-lgm.c
index b66c35074087..0cd7dd548e82 100644
--- a/drivers/pwm/pwm-intel-lgm.c
+++ b/drivers/pwm/pwm-intel-lgm.c
@@ -86,8 +86,8 @@ static int lgm_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return lgm_pwm_enable(chip, 1);
}
-static void lgm_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int lgm_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct lgm_pwm_chip *pc = to_lgm_pwm_chip(chip);
u32 duty, val;
@@ -100,6 +100,8 @@ static void lgm_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
regmap_read(pc->regmap, LGM_PWM_FAN_CON0, &val);
duty = FIELD_GET(LGM_PWM_FAN_DC_MSK, val);
state->duty_cycle = DIV_ROUND_UP(duty * pc->period, LGM_PWM_MAX_DUTY_CYCLE);
+
+ return 0;
}
static const struct pwm_ops lgm_pwm_ops = {
diff --git a/drivers/pwm/pwm-iqs620a.c b/drivers/pwm/pwm-iqs620a.c
index 7246176fce06..4987ca940b64 100644
--- a/drivers/pwm/pwm-iqs620a.c
+++ b/drivers/pwm/pwm-iqs620a.c
@@ -104,8 +104,8 @@ static int iqs620_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return ret;
}
-static void iqs620_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int iqs620_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct iqs620_pwm_private *iqs620_pwm;
@@ -126,6 +126,8 @@ static void iqs620_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
mutex_unlock(&iqs620_pwm->lock);
state->period = IQS620_PWM_PERIOD_NS;
+
+ return 0;
}
static int iqs620_pwm_notifier(struct notifier_block *notifier,
diff --git a/drivers/pwm/pwm-keembay.c b/drivers/pwm/pwm-keembay.c
index 733811b05721..ac02d8bb4a0b 100644
--- a/drivers/pwm/pwm-keembay.c
+++ b/drivers/pwm/pwm-keembay.c
@@ -89,8 +89,8 @@ static void keembay_pwm_disable(struct keembay_pwm *priv, int ch)
KMB_PWM_LEADIN_OFFSET(ch));
}
-static void keembay_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int keembay_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct keembay_pwm *priv = to_keembay_pwm_dev(chip);
unsigned long long high, low;
@@ -113,6 +113,8 @@ static void keembay_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->duty_cycle = DIV_ROUND_UP_ULL(high, clk_rate);
state->period = DIV_ROUND_UP_ULL(high + low, clk_rate);
state->polarity = PWM_POLARITY_NORMAL;
+
+ return 0;
}
static int keembay_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index accdef5dd58e..81ac297b8ba5 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -205,8 +205,8 @@ static int pwm_lpss_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return ret;
}
-static void pwm_lpss_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int pwm_lpss_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct pwm_lpss_chip *lpwm = to_lpwm(chip);
unsigned long base_unit_range;
@@ -236,6 +236,8 @@ static void pwm_lpss_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->enabled = !!(ctrl & PWM_ENABLE);
pm_runtime_put(chip->dev);
+
+ return 0;
}
static const struct pwm_ops pwm_lpss_ops = {
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 57112f438c6d..16d79ca5d8f5 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -318,8 +318,8 @@ static unsigned int meson_pwm_cnt_to_ns(struct pwm_chip *chip,
return cnt * fin_ns * (channel->pre_div + 1);
}
-static void meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct meson_pwm *meson = to_meson_pwm(chip);
struct meson_pwm_channel_data *channel_data;
@@ -327,7 +327,7 @@ static void meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
u32 value, tmp;
if (!state)
- return;
+ return 0;
channel = &meson->channels[pwm->hwpwm];
channel_data = &meson_pwm_per_channel_data[pwm->hwpwm];
@@ -357,6 +357,8 @@ static void meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->period = 0;
state->duty_cycle = 0;
}
+
+ return 0;
}
static const struct pwm_ops meson_pwm_ops = {
diff --git a/drivers/pwm/pwm-mtk-disp.c b/drivers/pwm/pwm-mtk-disp.c
index 3fbb4bae93a4..ccf0ccdef29d 100644
--- a/drivers/pwm/pwm-mtk-disp.c
+++ b/drivers/pwm/pwm-mtk-disp.c
@@ -172,9 +172,9 @@ static int mtk_disp_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void mtk_disp_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int mtk_disp_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct mtk_disp_pwm *mdp = to_mtk_disp_pwm(chip);
u64 rate, period, high_width;
@@ -184,14 +184,14 @@ static void mtk_disp_pwm_get_state(struct pwm_chip *chip,
err = clk_prepare_enable(mdp->clk_main);
if (err < 0) {
dev_err(chip->dev, "Can't enable mdp->clk_main: %pe\n", ERR_PTR(err));
- return;
+ return 0;
}
err = clk_prepare_enable(mdp->clk_mm);
if (err < 0) {
dev_err(chip->dev, "Can't enable mdp->clk_mm: %pe\n", ERR_PTR(err));
clk_disable_unprepare(mdp->clk_main);
- return;
+ return 0;
}
rate = clk_get_rate(mdp->clk_main);
@@ -212,6 +212,8 @@ static void mtk_disp_pwm_get_state(struct pwm_chip *chip,
state->polarity = PWM_POLARITY_NORMAL;
clk_disable_unprepare(mdp->clk_mm);
clk_disable_unprepare(mdp->clk_main);
+
+ return 0;
}
static const struct pwm_ops mtk_disp_pwm_ops = {
diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c
index f230c10d28bb..41be244e7dd3 100644
--- a/drivers/pwm/pwm-pca9685.c
+++ b/drivers/pwm/pwm-pca9685.c
@@ -431,8 +431,8 @@ static int pca9685_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return ret;
}
-static void pca9685_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int pca9685_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct pca9685 *pca = to_pca(chip);
unsigned long long duty;
@@ -458,12 +458,14 @@ static void pca9685_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
*/
state->duty_cycle = 0;
state->enabled = false;
- return;
+ return 0;
}
state->enabled = true;
duty = pca9685_pwm_get_duty(pca, pwm->hwpwm);
state->duty_cycle = DIV_ROUND_DOWN_ULL(duty * state->period, PCA9685_COUNTER_RANGE);
+
+ return 0;
}
static int pca9685_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
diff --git a/drivers/pwm/pwm-raspberrypi-poe.c b/drivers/pwm/pwm-raspberrypi-poe.c
index 6ff73029f367..2939b71a7ba7 100644
--- a/drivers/pwm/pwm-raspberrypi-poe.c
+++ b/drivers/pwm/pwm-raspberrypi-poe.c
@@ -82,9 +82,9 @@ static int raspberrypi_pwm_get_property(struct rpi_firmware *firmware,
return 0;
}
-static void raspberrypi_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int raspberrypi_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct raspberrypi_pwm *rpipwm = raspberrypi_pwm_from_chip(chip);
@@ -93,6 +93,8 @@ static void raspberrypi_pwm_get_state(struct pwm_chip *chip,
RPI_PWM_MAX_DUTY);
state->enabled = !!(rpipwm->duty_cycle);
state->polarity = PWM_POLARITY_NORMAL;
+
+ return 0;
}
static int raspberrypi_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index a5af859217c1..3ec7d1756903 100644
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -57,9 +57,9 @@ static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *c)
return container_of(c, struct rockchip_pwm_chip, chip);
}
-static void rockchip_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int rockchip_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
u32 enable_conf = pc->data->enable_conf;
@@ -70,11 +70,11 @@ static void rockchip_pwm_get_state(struct pwm_chip *chip,
ret = clk_enable(pc->pclk);
if (ret)
- return;
+ return 0;
ret = clk_enable(pc->clk);
if (ret)
- return;
+ return 0;
clk_rate = clk_get_rate(pc->clk);
@@ -96,6 +96,8 @@ static void rockchip_pwm_get_state(struct pwm_chip *chip,
clk_disable(pc->clk);
clk_disable(pc->pclk);
+
+ return 0;
}
static void rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-sifive.c b/drivers/pwm/pwm-sifive.c
index bb7239313401..62b6acc6373d 100644
--- a/drivers/pwm/pwm-sifive.c
+++ b/drivers/pwm/pwm-sifive.c
@@ -105,8 +105,8 @@ static void pwm_sifive_update_clock(struct pwm_sifive_ddata *ddata,
"New real_period = %u ns\n", ddata->real_period);
}
-static void pwm_sifive_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int pwm_sifive_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);
u32 duty, val;
@@ -123,6 +123,8 @@ static void pwm_sifive_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->duty_cycle =
(u64)duty * ddata->real_period >> PWM_SIFIVE_CMPWIDTH;
state->polarity = PWM_POLARITY_INVERSED;
+
+ return 0;
}
static int pwm_sifive_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-sl28cpld.c b/drivers/pwm/pwm-sl28cpld.c
index 589aeaaa6ac8..e64900ad4ba1 100644
--- a/drivers/pwm/pwm-sl28cpld.c
+++ b/drivers/pwm/pwm-sl28cpld.c
@@ -87,9 +87,9 @@ struct sl28cpld_pwm {
#define sl28cpld_pwm_from_chip(_chip) \
container_of(_chip, struct sl28cpld_pwm, pwm_chip)
-static void sl28cpld_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int sl28cpld_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct sl28cpld_pwm *priv = sl28cpld_pwm_from_chip(chip);
unsigned int reg;
@@ -115,6 +115,8 @@ static void sl28cpld_pwm_get_state(struct pwm_chip *chip,
* the PWM core.
*/
state->duty_cycle = min(state->duty_cycle, state->period);
+
+ return 0;
}
static int sl28cpld_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-sprd.c b/drivers/pwm/pwm-sprd.c
index 7004f55bbf11..bda8bc5af976 100644
--- a/drivers/pwm/pwm-sprd.c
+++ b/drivers/pwm/pwm-sprd.c
@@ -65,8 +65,8 @@ static void sprd_pwm_write(struct sprd_pwm_chip *spc, u32 hwid,
writel_relaxed(val, spc->base + offset);
}
-static void sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct sprd_pwm_chip *spc =
container_of(chip, struct sprd_pwm_chip, chip);
@@ -83,7 +83,7 @@ static void sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
if (ret) {
dev_err(spc->dev, "failed to enable pwm%u clocks\n",
pwm->hwpwm);
- return;
+ return 0;
}
val = sprd_pwm_read(spc, pwm->hwpwm, SPRD_PWM_ENABLE);
@@ -113,6 +113,8 @@ static void sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
/* Disable PWM clocks if the PWM channel is not in enable state. */
if (!state->enabled)
clk_bulk_disable_unprepare(SPRD_PWM_CHN_CLKS_NUM, chn->clks);
+
+ return 0;
}
static int sprd_pwm_config(struct sprd_pwm_chip *spc, struct pwm_device *pwm,
diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c
index 212bdc7d51ee..514ff58a4471 100644
--- a/drivers/pwm/pwm-stm32-lp.c
+++ b/drivers/pwm/pwm-stm32-lp.c
@@ -156,9 +156,9 @@ err:
return ret;
}
-static void stm32_pwm_lp_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int stm32_pwm_lp_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct stm32_pwm_lp *priv = to_stm32_pwm_lp(chip);
unsigned long rate = clk_get_rate(priv->clk);
@@ -184,6 +184,8 @@ static void stm32_pwm_lp_get_state(struct pwm_chip *chip,
tmp = prd - val;
tmp = (tmp << presc) * NSEC_PER_SEC;
state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, rate);
+
+ return 0;
}
static const struct pwm_ops stm32_pwm_lp_ops = {
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index c8445b0a3339..37d75e252d4e 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -108,9 +108,9 @@ static inline void sun4i_pwm_writel(struct sun4i_pwm_chip *chip,
writel(val, chip->base + offset);
}
-static void sun4i_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *pwm,
- struct pwm_state *state)
+static int sun4i_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct sun4i_pwm_chip *sun4i_pwm = to_sun4i_pwm_chip(chip);
u64 clk_rate, tmp;
@@ -132,7 +132,7 @@ static void sun4i_pwm_get_state(struct pwm_chip *chip,
state->duty_cycle = DIV_ROUND_UP_ULL(state->period, 2);
state->polarity = PWM_POLARITY_NORMAL;
state->enabled = true;
- return;
+ return 0;
}
if ((PWM_REG_PRESCAL(val, pwm->hwpwm) == PWM_PRESCAL_MASK) &&
@@ -142,7 +142,7 @@ static void sun4i_pwm_get_state(struct pwm_chip *chip,
prescaler = prescaler_table[PWM_REG_PRESCAL(val, pwm->hwpwm)];
if (prescaler == 0)
- return;
+ return 0;
if (val & BIT_CH(PWM_ACT_STATE, pwm->hwpwm))
state->polarity = PWM_POLARITY_NORMAL;
@@ -162,6 +162,8 @@ static void sun4i_pwm_get_state(struct pwm_chip *chip,
tmp = (u64)prescaler * NSEC_PER_SEC * PWM_REG_PRD(val);
state->period = DIV_ROUND_CLOSEST_ULL(tmp, clk_rate);
+
+ return 0;
}
static int sun4i_pwm_calculate(struct sun4i_pwm_chip *sun4i_pwm,
diff --git a/drivers/pwm/pwm-sunplus.c b/drivers/pwm/pwm-sunplus.c
index e776fd16512d..d6ebe9f03b35 100644
--- a/drivers/pwm/pwm-sunplus.c
+++ b/drivers/pwm/pwm-sunplus.c
@@ -124,8 +124,8 @@ static int sunplus_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void sunplus_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int sunplus_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct sunplus_pwm *priv = to_sunplus_pwm(chip);
u32 mode0, dd_freq, duty;
@@ -155,6 +155,8 @@ static void sunplus_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
}
state->polarity = PWM_POLARITY_NORMAL;
+
+ return 0;
}
static const struct pwm_ops sunplus_pwm_ops = {
diff --git a/drivers/pwm/pwm-visconti.c b/drivers/pwm/pwm-visconti.c
index 927c4cbb1daf..e3fb79b3e2a7 100644
--- a/drivers/pwm/pwm-visconti.c
+++ b/drivers/pwm/pwm-visconti.c
@@ -103,8 +103,8 @@ static int visconti_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static void visconti_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
- struct pwm_state *state)
+static int visconti_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
{
struct visconti_pwm_chip *priv = visconti_pwm_from_chip(chip);
u32 period, duty, pwmc0, pwmc0_clk;
@@ -122,6 +122,8 @@ static void visconti_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm
state->polarity = PWM_POLARITY_NORMAL;
state->enabled = true;
+
+ return 0;
}
static const struct pwm_ops visconti_pwm_ops = {
diff --git a/drivers/pwm/pwm-xilinx.c b/drivers/pwm/pwm-xilinx.c
index 4dab2b86c427..f7a50fdcd9a5 100644
--- a/drivers/pwm/pwm-xilinx.c
+++ b/drivers/pwm/pwm-xilinx.c
@@ -169,9 +169,9 @@ static int xilinx_pwm_apply(struct pwm_chip *chip, struct pwm_device *unused,
return 0;
}
-static void xilinx_pwm_get_state(struct pwm_chip *chip,
- struct pwm_device *unused,
- struct pwm_state *state)
+static int xilinx_pwm_get_state(struct pwm_chip *chip,
+ struct pwm_device *unused,
+ struct pwm_state *state)
{
struct xilinx_timer_priv *priv = xilinx_pwm_chip_to_priv(chip);
u32 tlr0, tlr1, tcsr0, tcsr1;
@@ -191,6 +191,8 @@ static void xilinx_pwm_get_state(struct pwm_chip *chip,
*/
if (state->period == state->duty_cycle)
state->duty_cycle = 0;
+
+ return 0;
}
static const struct pwm_ops xilinx_pwm_ops = {
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-27 05:53:44 +0100