pwm: jz4740: Add support for the JZ4725B (74db728c) · Commits · 戴 / test

drivers/pwm/pwm-jz4740.c

+20 −4

Original line number	Diff line number	Diff line
		@@ -20,7 +20,9 @@
		#include <linux/pwm.h>
		#include <linux/regmap.h>

		#define NUM_PWM 8
		struct soc_info {
		unsigned int num_pwms;
		};

		struct jz4740_pwm_chip {
		struct pwm_chip chip;
		@@ -36,7 +38,7 @@ static bool jz4740_pwm_can_use_chn(struct jz4740_pwm_chip *jz,
		unsigned int channel)
		{
		/* Enable all TCU channels for PWM use by default except channels 0/1 */
		u32 pwm_channels_mask = GENMASK(NUM_PWM - 1, 2);
		u32 pwm_channels_mask = GENMASK(jz->chip.npwm - 1, 2);

		device_property_read_u32(jz->chip.dev->parent,
		"ingenic,pwm-channels-mask",
		@@ -226,6 +228,11 @@ static int jz4740_pwm_probe(struct platform_device *pdev)
		{
		struct device *dev = &pdev->dev;
		struct jz4740_pwm_chip *jz4740;
		const struct soc_info *info;

		info = device_get_match_data(dev);
		if (!info)
		return -EINVAL;

		jz4740 = devm_kzalloc(dev, sizeof(*jz4740), GFP_KERNEL);
		if (!jz4740)
		@@ -239,7 +246,7 @@ static int jz4740_pwm_probe(struct platform_device *pdev)

		jz4740->chip.dev = dev;
		jz4740->chip.ops = &jz4740_pwm_ops;
		jz4740->chip.npwm = NUM_PWM;
		jz4740->chip.npwm = info->num_pwms;
		jz4740->chip.base = -1;
		jz4740->chip.of_xlate = of_pwm_xlate_with_flags;
		jz4740->chip.of_pwm_n_cells = 3;
		@@ -256,9 +263,18 @@ static int jz4740_pwm_remove(struct platform_device *pdev)
		return pwmchip_remove(&jz4740->chip);
		}

		static const struct soc_info __maybe_unused jz4740_soc_info = {
		.num_pwms = 8,
		};

		static const struct soc_info __maybe_unused jz4725b_soc_info = {
		.num_pwms = 6,
		};

		#ifdef CONFIG_OF
		static const struct of_device_id jz4740_pwm_dt_ids[] = {
		{ .compatible = "ingenic,jz4740-pwm", },
		{ .compatible = "ingenic,jz4740-pwm", .data = &jz4740_soc_info },
		{ .compatible = "ingenic,jz4725b-pwm", .data = &jz4725b_soc_info },
		{},
		};
		MODULE_DEVICE_TABLE(of, jz4740_pwm_dt_ids);

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