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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Mika Westerberg" <mika.westerberg@linux.intel.com>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Hans de Goede" <hdegoede@redhat.com>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
	linux-pwm@vger.kernel.org
Cc: Andy Shevchenko <andy@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH v5 7/7] pinctrl: intel: Enumerate PWM device when community has a capability
Date: Thu, 17 Nov 2022 13:08:06 +0200	[thread overview]
Message-ID: <20221117110806.65470-8-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20221117110806.65470-1-andriy.shevchenko@linux.intel.com>

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>
---
 drivers/pinctrl/intel/pinctrl-intel.c | 29 +++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

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);
-- 
2.35.1


  parent reply	other threads:[~2022-11-17 11:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-17 11:07 [PATCH v5 0/7] pinctrl: intel: Enable PWM optional feature Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 1/7] pwm: Add a stub for devm_pwmchip_add() Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 2/7] pwm: lpss: Rename MAX_PWMS --> LPSS_MAX_PWMS Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 3/7] pwm: lpss: Include headers we are the direct user of Andy Shevchenko
2022-11-22 13:39   ` Uwe Kleine-König
2022-11-22 14:34     ` Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 4/7] pwm: lpss: Allow other drivers to enable PWM LPSS Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 5/7] pwm: lpss: Rename pwm_lpss_probe() --> devm_pwm_lpss_probe() Andy Shevchenko
2022-11-17 11:08 ` [PATCH v5 6/7] pwm: lpss: Add devm_pwm_lpss_probe() stub Andy Shevchenko
2022-11-22 16:47   ` Uwe Kleine-König
2022-11-22 17:35     ` Andy Shevchenko
2022-11-22 18:14       ` Uwe Kleine-König
2022-11-22 18:32         ` Andy Shevchenko
2022-11-22 20:21           ` Uwe Kleine-König
2022-11-17 11:08 ` Andy Shevchenko [this message]
2022-11-22 13:00 ` [PATCH v5 0/7] pinctrl: intel: Enable PWM optional feature Andy Shevchenko

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