diff options
Diffstat (limited to 'drivers/pwm/pwm-imx.c')
| -rw-r--r-- | drivers/pwm/pwm-imx.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index 05d90af194cb..0b8da21a0b1d 100644 --- a/drivers/pwm/pwm-imx.c +++ b/drivers/pwm/pwm-imx.c @@ -47,6 +47,8 @@ #define MX3_PWM_SWR_LOOP 5 +#define MX3_PWMCR_OUTPIN_DISCONNECT (3 << 18) + struct imx_chip { struct clk *clk_per; struct clk *clk_ipg; @@ -58,6 +60,7 @@ struct imx_chip { int (*config)(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns); void (*set_enable)(struct pwm_chip *chip, bool enable); + void (*out_enable)(struct pwm_chip *chip, bool enable); }; #define to_imx_chip(chip) container_of(chip, struct imx_chip, chip) @@ -106,6 +109,21 @@ static void imx_pwm_set_enable_v1(struct pwm_chip *chip, bool enable) writel(val, imx->mmio_base + MX1_PWMC); } +static void imx_pwm_out_enable_v1(struct pwm_chip *chip, bool enable) +{ + struct imx_chip *imx = to_imx_chip(chip); + u32 val; + + val = readl(imx->mmio_base + MX1_PWMC); + + if (enable) + val |= MX1_PWMC_EN; + else + val &= ~MX1_PWMC_EN; + + writel(val, imx->mmio_base + MX1_PWMC); +} + static int imx_pwm_config_v2(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns) { @@ -199,6 +217,21 @@ static void imx_pwm_set_enable_v2(struct pwm_chip *chip, bool enable) writel(val, imx->mmio_base + MX3_PWMCR); } +static void imx_pwm_out_enable_v2(struct pwm_chip *chip, bool enable) +{ + struct imx_chip *imx = to_imx_chip(chip); + u32 val; + + val = readl(imx->mmio_base + MX3_PWMCR); + + if (enable) + val &= ~(MX3_PWMCR_OUTPIN_DISCONNECT); + else + val |= (MX3_PWMCR_OUTPIN_DISCONNECT); + + writel(val, imx->mmio_base + MX3_PWMCR); +} + static int imx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns) { @@ -239,10 +272,18 @@ static void imx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) clk_disable_unprepare(imx->clk_per); } +static void imx_pwm_out_enable(struct pwm_chip *chip, bool enable) +{ + struct imx_chip *imx = to_imx_chip(chip); + + imx->out_enable(chip, enable); +} + static struct pwm_ops imx_pwm_ops = { .enable = imx_pwm_enable, .disable = imx_pwm_disable, .config = imx_pwm_config, + .out_enable = imx_pwm_out_enable, .owner = THIS_MODULE, }; @@ -250,16 +291,19 @@ struct imx_pwm_data { int (*config)(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns); void (*set_enable)(struct pwm_chip *chip, bool enable); + void (*out_enable)(struct pwm_chip *chip, bool enable); }; static struct imx_pwm_data imx_pwm_data_v1 = { .config = imx_pwm_config_v1, .set_enable = imx_pwm_set_enable_v1, + .out_enable = imx_pwm_out_enable_v1, }; static struct imx_pwm_data imx_pwm_data_v2 = { .config = imx_pwm_config_v2, .set_enable = imx_pwm_set_enable_v2, + .out_enable = imx_pwm_out_enable_v2, }; static const struct of_device_id imx_pwm_dt_ids[] = { @@ -314,6 +358,7 @@ static int imx_pwm_probe(struct platform_device *pdev) data = of_id->data; imx->config = data->config; imx->set_enable = data->set_enable; + imx->out_enable = data->out_enable; ret = pwmchip_add(&imx->chip); if (ret < 0) |