diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-11-17 13:08:06 +0200 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-11-22 20:34:02 +0200 |
| commit | eb78d3604d6bcbe9743e036114c33a5a17090a0a (patch) | |
| tree | b746613a53d2a6b40a44105aae0fec6659f9deb9 /drivers/pinctrl | |
| parent | f0f31de35644537a18059dac0e4a06f8b1c1c6c0 (diff) | |
| download | linux-eb78d3604d6bcbe9743e036114c33a5a17090a0a.tar.bz2 | |
pinctrl: intel: Enumerate PWM device when community has a capability
Some of the Communities may have PWM capability. In such cases,
enumerate the PWM device via respective driver. A user is still
responsible for setting correct pin muxing for the line that
needs to output the signal.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c index 52ecd66ce357..d74c8b650aa7 100644 --- a/drivers/pinctrl/intel/pinctrl-intel.c +++ b/drivers/pinctrl/intel/pinctrl-intel.c @@ -21,6 +21,8 @@ #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> +#include <linux/platform_data/x86/pwm-lpss.h> + #include "../core.h" #include "pinctrl-intel.h" @@ -46,6 +48,8 @@ #define PADOWN_MASK(p) (GENMASK(3, 0) << PADOWN_SHIFT(p)) #define PADOWN_GPP(p) ((p) / 8) +#define PWMC 0x204 + /* Offset from pad_regs */ #define PADCFG0 0x000 #define PADCFG0_RXEVCFG_SHIFT 25 @@ -1499,6 +1503,27 @@ static int intel_pinctrl_pm_init(struct intel_pinctrl *pctrl) return 0; } +static int intel_pinctrl_probe_pwm(struct intel_pinctrl *pctrl, + struct intel_community *community) +{ + static const struct pwm_lpss_boardinfo info = { + .clk_rate = 19200000, + .npwm = 1, + .base_unit_bits = 22, + .bypass = true, + }; + struct pwm_lpss_chip *pwm; + + if (!(community->features & PINCTRL_FEATURE_PWM)) + return 0; + + if (!IS_REACHABLE(CONFIG_PWM_LPSS)) + return 0; + + pwm = devm_pwm_lpss_probe(pctrl->dev, community->regs + PWMC, &info); + return PTR_ERR_OR_ZERO(pwm); +} + static int intel_pinctrl_probe(struct platform_device *pdev, const struct intel_pinctrl_soc_data *soc_data) { @@ -1584,6 +1609,10 @@ static int intel_pinctrl_probe(struct platform_device *pdev, ret = intel_pinctrl_add_padgroups_by_size(pctrl, community); if (ret) return ret; + + ret = intel_pinctrl_probe_pwm(pctrl, community); + if (ret) + return ret; } irq = platform_get_irq(pdev, 0); |