[PATCH v7 16/24] pwm: jz4740: Add support for the JZ4725B
From: Paul Cercueil <paul@crapouillou.net>
Date: 2018-08-21 17:17:20
Also in:
linux-clk, linux-devicetree, linux-mips, linux-pwm, linux-watchdog, lkml
Subsystem:
ingenic jz47xx socs, pwm subsystem, the rest · Maintainers:
Paul Cercueil, Uwe Kleine-König, Linus Torvalds
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>
---
Notes:
v5: New patch
v6: - Move of_device_id structure back at the bottom (less noise in
patch)
- Use device_get_match_data() instead of of_* variant
v7: No change
drivers/pwm/pwm-jz4740.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c
index 5814825d9bed..66a72bd7424f 100644
--- a/drivers/pwm/pwm-jz4740.c
+++ b/drivers/pwm/pwm-jz4740.c@@ -25,6 +25,10 @@ #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];
@@ -200,9 +204,14 @@ static const struct pwm_ops jz4740_pwm_ops = { 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; + soc_info = device_get_match_data(dev); + if (!soc_info) + return -EINVAL; + jz4740 = devm_kzalloc(dev, sizeof(*jz4740), GFP_KERNEL); if (!jz4740) return -ENOMEM;
@@ -215,7 +224,7 @@ 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 = soc_info->num_pwms; jz4740->chip.base = -1; jz4740->chip.of_xlate = of_pwm_xlate_with_flags; jz4740->chip.of_pwm_n_cells = 3;
@@ -233,8 +242,17 @@ static int jz4740_pwm_remove(struct platform_device *pdev) } #ifdef CONFIG_OF +static const struct jz4740_soc_info jz4740_soc_info = { + .num_pwms = 8, +}; + +static const struct jz4740_soc_info jz4725b_soc_info = { + .num_pwms = 6, +}; + 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);
--
2.11.0