[PATCH v5 13/21] pwm: jz4740: Add support for the JZ4725B

Paul Cercueil
2018-07-24T23:20:38Z

The PWM in the JZ4725B works the same as in the JZ4740, except that it
only has 6 channels available instead of 8.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
drivers/pwm/pwm-jz4740.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)

v5: New patch

diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c
index e1cb618bb234..b19437c75232 100644
--- a/drivers/pwm/pwm-jz4740.c
+++ b/drivers/pwm/pwm-jz4740.c
@@ -26,6 +26,10 @@

#define NUM_PWM 8

+struct jz4740_soc_info {
+ unsigned int num_pwms;
+};
+
struct jz4740_pwm_chip {
struct pwm_chip chip;
struct clk *clks[NUM_PWM];
@@ -195,8 +199,26 @@ static const struct pwm_ops jz4740_pwm_ops = {
.owner = THIS_MODULE,
};

+static const struct jz4740_soc_info jz4740_soc_info = {
+ .num_pwms = 8,
+};
+
+static const struct jz4740_soc_info jz4725b_soc_info = {
+ .num_pwms = 6,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id jz4740_pwm_dt_ids[] = {
+ { .compatible = "ingenic,jz4740-pwm", .data = &jz4740_soc_info },
+ { .compatible = "ingenic,jz4725b-pwm", .data = &jz4725b_soc_info },
+ {},
+};
+MODULE_DEVICE_TABLE(of, jz4740_pwm_dt_ids);
+#endif
+
static int jz4740_pwm_probe(struct platform_device *pdev)
{
+ const struct jz4740_soc_info *soc_info;
struct jz4740_pwm_chip *jz4740;
struct device *dev = &pdev->dev;

@@ -213,9 +235,11 @@ static int jz4740_pwm_probe(struct platform_device *pdev)
if (IS_ERR(jz4740->map))
return PTR_ERR(jz4740->map);

+ soc_info = of_device_get_match_data(dev);
+
jz4740->chip.dev = dev;
jz4740->chip.ops = &jz4740_pwm_ops;
- jz4740->chip.npwm = NUM_PWM;
+ jz4740->chip.npwm = soc_info->num_pwms;
jz4740->chip.base = -1;
jz4740->chip.of_xlate = of_pwm_xlate_with_flags;
jz4740->chip.of_pwm_n_cells = 3;
@@ -232,14 +256,6 @@ static int jz4740_pwm_remove(struct platform_device *pdev)
return pwmchip_remove(&jz4740->chip);
}

-#ifdef CONFIG_OF
-static const struct of_device_id jz4740_pwm_dt_ids[] = {
- { .compatible = "ingenic,jz4740-pwm", },
- {},
-};
-MODULE_DEVICE_TABLE(of, jz4740_pwm_dt_ids);
-#endif
-
static struct platform_driver jz4740_pwm_driver = {
.driver = {
.name = "jz4740-pwm",
--
2.11.0