pwm: mediatek: Add MT2712/MT7622 support
Add support for MT2712 and MT7622. Due to register offset address of pwm7 for MT2712 is not fixed 0x40, add mtk_pwm_reg_offset array for PWM register offset. Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Zhi Mao <zhi.mao@mediatek.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>hifive-unleashed-5.1
parent
df4f6e8c9f
commit
424268c749
|
@ -16,6 +16,7 @@
|
||||||
#include <linux/module.h>
|
#include <linux/module.h>
|
||||||
#include <linux/clk.h>
|
#include <linux/clk.h>
|
||||||
#include <linux/of.h>
|
#include <linux/of.h>
|
||||||
|
#include <linux/of_device.h>
|
||||||
#include <linux/platform_device.h>
|
#include <linux/platform_device.h>
|
||||||
#include <linux/pwm.h>
|
#include <linux/pwm.h>
|
||||||
#include <linux/slab.h>
|
#include <linux/slab.h>
|
||||||
|
@ -40,11 +41,19 @@ enum {
|
||||||
MTK_CLK_PWM3,
|
MTK_CLK_PWM3,
|
||||||
MTK_CLK_PWM4,
|
MTK_CLK_PWM4,
|
||||||
MTK_CLK_PWM5,
|
MTK_CLK_PWM5,
|
||||||
|
MTK_CLK_PWM6,
|
||||||
|
MTK_CLK_PWM7,
|
||||||
|
MTK_CLK_PWM8,
|
||||||
MTK_CLK_MAX,
|
MTK_CLK_MAX,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const char * const mtk_pwm_clk_name[] = {
|
static const char * const mtk_pwm_clk_name[MTK_CLK_MAX] = {
|
||||||
"main", "top", "pwm1", "pwm2", "pwm3", "pwm4", "pwm5"
|
"main", "top", "pwm1", "pwm2", "pwm3", "pwm4", "pwm5", "pwm6", "pwm7",
|
||||||
|
"pwm8"
|
||||||
|
};
|
||||||
|
|
||||||
|
struct mtk_pwm_platform_data {
|
||||||
|
unsigned int num_pwms;
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -59,6 +68,10 @@ struct mtk_pwm_chip {
|
||||||
struct clk *clks[MTK_CLK_MAX];
|
struct clk *clks[MTK_CLK_MAX];
|
||||||
};
|
};
|
||||||
|
|
||||||
|
static const unsigned int mtk_pwm_reg_offset[] = {
|
||||||
|
0x0010, 0x0050, 0x0090, 0x00d0, 0x0110, 0x0150, 0x0190, 0x0220
|
||||||
|
};
|
||||||
|
|
||||||
static inline struct mtk_pwm_chip *to_mtk_pwm_chip(struct pwm_chip *chip)
|
static inline struct mtk_pwm_chip *to_mtk_pwm_chip(struct pwm_chip *chip)
|
||||||
{
|
{
|
||||||
return container_of(chip, struct mtk_pwm_chip, chip);
|
return container_of(chip, struct mtk_pwm_chip, chip);
|
||||||
|
@ -103,14 +116,14 @@ static void mtk_pwm_clk_disable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||||
static inline u32 mtk_pwm_readl(struct mtk_pwm_chip *chip, unsigned int num,
|
static inline u32 mtk_pwm_readl(struct mtk_pwm_chip *chip, unsigned int num,
|
||||||
unsigned int offset)
|
unsigned int offset)
|
||||||
{
|
{
|
||||||
return readl(chip->regs + 0x10 + (num * 0x40) + offset);
|
return readl(chip->regs + mtk_pwm_reg_offset[num] + offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
static inline void mtk_pwm_writel(struct mtk_pwm_chip *chip,
|
static inline void mtk_pwm_writel(struct mtk_pwm_chip *chip,
|
||||||
unsigned int num, unsigned int offset,
|
unsigned int num, unsigned int offset,
|
||||||
u32 value)
|
u32 value)
|
||||||
{
|
{
|
||||||
writel(value, chip->regs + 0x10 + (num * 0x40) + offset);
|
writel(value, chip->regs + mtk_pwm_reg_offset[num] + offset);
|
||||||
}
|
}
|
||||||
|
|
||||||
static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||||
|
@ -185,6 +198,7 @@ static const struct pwm_ops mtk_pwm_ops = {
|
||||||
|
|
||||||
static int mtk_pwm_probe(struct platform_device *pdev)
|
static int mtk_pwm_probe(struct platform_device *pdev)
|
||||||
{
|
{
|
||||||
|
const struct mtk_pwm_platform_data *data;
|
||||||
struct mtk_pwm_chip *pc;
|
struct mtk_pwm_chip *pc;
|
||||||
struct resource *res;
|
struct resource *res;
|
||||||
unsigned int i;
|
unsigned int i;
|
||||||
|
@ -194,15 +208,22 @@ static int mtk_pwm_probe(struct platform_device *pdev)
|
||||||
if (!pc)
|
if (!pc)
|
||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
|
data = of_device_get_match_data(&pdev->dev);
|
||||||
|
if (data == NULL)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||||
pc->regs = devm_ioremap_resource(&pdev->dev, res);
|
pc->regs = devm_ioremap_resource(&pdev->dev, res);
|
||||||
if (IS_ERR(pc->regs))
|
if (IS_ERR(pc->regs))
|
||||||
return PTR_ERR(pc->regs);
|
return PTR_ERR(pc->regs);
|
||||||
|
|
||||||
for (i = 0; i < MTK_CLK_MAX; i++) {
|
for (i = 0; i < data->num_pwms + 2; i++) {
|
||||||
pc->clks[i] = devm_clk_get(&pdev->dev, mtk_pwm_clk_name[i]);
|
pc->clks[i] = devm_clk_get(&pdev->dev, mtk_pwm_clk_name[i]);
|
||||||
if (IS_ERR(pc->clks[i]))
|
if (IS_ERR(pc->clks[i])) {
|
||||||
|
dev_err(&pdev->dev, "clock: %s fail: %ld\n",
|
||||||
|
mtk_pwm_clk_name[i], PTR_ERR(pc->clks[i]));
|
||||||
return PTR_ERR(pc->clks[i]);
|
return PTR_ERR(pc->clks[i]);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
platform_set_drvdata(pdev, pc);
|
platform_set_drvdata(pdev, pc);
|
||||||
|
@ -210,7 +231,7 @@ static int mtk_pwm_probe(struct platform_device *pdev)
|
||||||
pc->chip.dev = &pdev->dev;
|
pc->chip.dev = &pdev->dev;
|
||||||
pc->chip.ops = &mtk_pwm_ops;
|
pc->chip.ops = &mtk_pwm_ops;
|
||||||
pc->chip.base = -1;
|
pc->chip.base = -1;
|
||||||
pc->chip.npwm = 5;
|
pc->chip.npwm = data->num_pwms;
|
||||||
|
|
||||||
ret = pwmchip_add(&pc->chip);
|
ret = pwmchip_add(&pc->chip);
|
||||||
if (ret < 0) {
|
if (ret < 0) {
|
||||||
|
@ -228,9 +249,23 @@ static int mtk_pwm_remove(struct platform_device *pdev)
|
||||||
return pwmchip_remove(&pc->chip);
|
return pwmchip_remove(&pc->chip);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static const struct mtk_pwm_platform_data mt2712_pwm_data = {
|
||||||
|
.num_pwms = 8,
|
||||||
|
};
|
||||||
|
|
||||||
|
static const struct mtk_pwm_platform_data mt7622_pwm_data = {
|
||||||
|
.num_pwms = 6,
|
||||||
|
};
|
||||||
|
|
||||||
|
static const struct mtk_pwm_platform_data mt7623_pwm_data = {
|
||||||
|
.num_pwms = 5,
|
||||||
|
};
|
||||||
|
|
||||||
static const struct of_device_id mtk_pwm_of_match[] = {
|
static const struct of_device_id mtk_pwm_of_match[] = {
|
||||||
{ .compatible = "mediatek,mt7623-pwm" },
|
{ .compatible = "mediatek,mt2712-pwm", .data = &mt2712_pwm_data },
|
||||||
{ }
|
{ .compatible = "mediatek,mt7622-pwm", .data = &mt7622_pwm_data },
|
||||||
|
{ .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data },
|
||||||
|
{ },
|
||||||
};
|
};
|
||||||
MODULE_DEVICE_TABLE(of, mtk_pwm_of_match);
|
MODULE_DEVICE_TABLE(of, mtk_pwm_of_match);
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue