forked from Minki/linux
pwm: mediatek: Use pwm_mediatek as common prefix
Use pwm_mediatek as common prefix to match the filename. No functional change intended. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Sam Shih <sam.shih@mediatek.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Sam Shih
Thierry Reding
parent
efecdeb82f
commit
2503781c97
@ -35,13 +35,13 @@
|
||||
|
||||
#define PWM_CLK_DIV_MAX 7
|
||||
|
||||
struct mtk_pwm_platform_data {
|
||||
struct pwm_mediatek_of_data {
|
||||
unsigned int num_pwms;
|
||||
bool pwm45_fixup;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct mtk_pwm_chip - struct representing PWM chip
|
||||
* struct pwm_mediatek_chip - struct representing PWM chip
|
||||
* @chip: linux PWM chip representation
|
||||
* @regs: base address of PWM chip
|
||||
* @clk_top: the top clock generator
|
||||
@ -49,27 +49,29 @@ struct mtk_pwm_platform_data {
|
||||
* @clk_pwms: the clock used by each PWM channel
|
||||
* @clk_freq: the fix clock frequency of legacy MIPS SoC
|
||||
*/
|
||||
struct mtk_pwm_chip {
|
||||
struct pwm_mediatek_chip {
|
||||
struct pwm_chip chip;
|
||||
void __iomem *regs;
|
||||
struct clk *clk_top;
|
||||
struct clk *clk_main;
|
||||
struct clk **clk_pwms;
|
||||
const struct mtk_pwm_platform_data *soc;
|
||||
const struct pwm_mediatek_of_data *soc;
|
||||
};
|
||||
|
||||
static const unsigned int mtk_pwm_reg_offset[] = {
|
||||
static const unsigned int pwm_mediatek_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 pwm_mediatek_chip *
|
||||
to_pwm_mediatek_chip(struct pwm_chip *chip)
|
||||
{
|
||||
return container_of(chip, struct mtk_pwm_chip, chip);
|
||||
return container_of(chip, struct pwm_mediatek_chip, chip);
|
||||
}
|
||||
|
||||
static int mtk_pwm_clk_enable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
static int pwm_mediatek_clk_enable(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
|
||||
struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip);
|
||||
int ret;
|
||||
|
||||
ret = clk_prepare_enable(pc->clk_top);
|
||||
@ -94,45 +96,46 @@ disable_clk_top:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void mtk_pwm_clk_disable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
static void pwm_mediatek_clk_disable(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
|
||||
struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip);
|
||||
|
||||
clk_disable_unprepare(pc->clk_pwms[pwm->hwpwm]);
|
||||
clk_disable_unprepare(pc->clk_main);
|
||||
clk_disable_unprepare(pc->clk_top);
|
||||
}
|
||||
|
||||
static inline u32 mtk_pwm_readl(struct mtk_pwm_chip *chip, unsigned int num,
|
||||
unsigned int offset)
|
||||
static inline u32 pwm_mediatek_readl(struct pwm_mediatek_chip *chip,
|
||||
unsigned int num, unsigned int offset)
|
||||
{
|
||||
return readl(chip->regs + mtk_pwm_reg_offset[num] + offset);
|
||||
return readl(chip->regs + pwm_mediatek_reg_offset[num] + offset);
|
||||
}
|
||||
|
||||
static inline void mtk_pwm_writel(struct mtk_pwm_chip *chip,
|
||||
unsigned int num, unsigned int offset,
|
||||
u32 value)
|
||||
static inline void pwm_mediatek_writel(struct pwm_mediatek_chip *chip,
|
||||
unsigned int num, unsigned int offset,
|
||||
u32 value)
|
||||
{
|
||||
writel(value, chip->regs + mtk_pwm_reg_offset[num] + offset);
|
||||
writel(value, chip->regs + pwm_mediatek_reg_offset[num] + offset);
|
||||
}
|
||||
|
||||
static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
int duty_ns, int period_ns)
|
||||
static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
int duty_ns, int period_ns)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
|
||||
struct clk *clk = pc->clk_pwms[pwm->hwpwm];
|
||||
struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip);
|
||||
u32 clkdiv = 0, cnt_period, cnt_duty, reg_width = PWMDWIDTH,
|
||||
reg_thres = PWMTHRES;
|
||||
u64 resolution;
|
||||
int ret;
|
||||
|
||||
ret = mtk_pwm_clk_enable(chip, pwm);
|
||||
ret = pwm_mediatek_clk_enable(chip, pwm);
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Using resolution in picosecond gets accuracy higher */
|
||||
resolution = (u64)NSEC_PER_SEC * 1000;
|
||||
do_div(resolution, clk_get_rate(clk));
|
||||
do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));
|
||||
|
||||
cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000, resolution);
|
||||
while (cnt_period > 8191) {
|
||||
@ -143,7 +146,7 @@ static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
}
|
||||
|
||||
if (clkdiv > PWM_CLK_DIV_MAX) {
|
||||
mtk_pwm_clk_disable(chip, pwm);
|
||||
pwm_mediatek_clk_disable(chip, pwm);
|
||||
dev_err(chip->dev, "period %d not supported\n", period_ns);
|
||||
return -EINVAL;
|
||||
}
|
||||
@ -158,22 +161,22 @@ static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
}
|
||||
|
||||
cnt_duty = DIV_ROUND_CLOSEST_ULL((u64)duty_ns * 1000, resolution);
|
||||
mtk_pwm_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | clkdiv);
|
||||
mtk_pwm_writel(pc, pwm->hwpwm, reg_width, cnt_period);
|
||||
mtk_pwm_writel(pc, pwm->hwpwm, reg_thres, cnt_duty);
|
||||
pwm_mediatek_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | clkdiv);
|
||||
pwm_mediatek_writel(pc, pwm->hwpwm, reg_width, cnt_period);
|
||||
pwm_mediatek_writel(pc, pwm->hwpwm, reg_thres, cnt_duty);
|
||||
|
||||
mtk_pwm_clk_disable(chip, pwm);
|
||||
pwm_mediatek_clk_disable(chip, pwm);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
static int pwm_mediatek_enable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
|
||||
struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip);
|
||||
u32 value;
|
||||
int ret;
|
||||
|
||||
ret = mtk_pwm_clk_enable(chip, pwm);
|
||||
ret = pwm_mediatek_clk_enable(chip, pwm);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
@ -184,28 +187,28 @@ static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mtk_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
static void pwm_mediatek_disable(struct pwm_chip *chip, struct pwm_device *pwm)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
|
||||
struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip);
|
||||
u32 value;
|
||||
|
||||
value = readl(pc->regs);
|
||||
value &= ~BIT(pwm->hwpwm);
|
||||
writel(value, pc->regs);
|
||||
|
||||
mtk_pwm_clk_disable(chip, pwm);
|
||||
pwm_mediatek_clk_disable(chip, pwm);
|
||||
}
|
||||
|
||||
static const struct pwm_ops mtk_pwm_ops = {
|
||||
.config = mtk_pwm_config,
|
||||
.enable = mtk_pwm_enable,
|
||||
.disable = mtk_pwm_disable,
|
||||
static const struct pwm_ops pwm_mediatek_ops = {
|
||||
.config = pwm_mediatek_config,
|
||||
.enable = pwm_mediatek_enable,
|
||||
.disable = pwm_mediatek_disable,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int mtk_pwm_probe(struct platform_device *pdev)
|
||||
static int pwm_mediatek_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mtk_pwm_chip *pc;
|
||||
struct pwm_mediatek_chip *pc;
|
||||
struct resource *res;
|
||||
unsigned int i;
|
||||
int ret;
|
||||
@ -256,7 +259,7 @@ static int mtk_pwm_probe(struct platform_device *pdev)
|
||||
platform_set_drvdata(pdev, pc);
|
||||
|
||||
pc->chip.dev = &pdev->dev;
|
||||
pc->chip.ops = &mtk_pwm_ops;
|
||||
pc->chip.ops = &pwm_mediatek_ops;
|
||||
pc->chip.base = -1;
|
||||
pc->chip.npwm = pc->soc->num_pwms;
|
||||
|
||||
@ -269,39 +272,39 @@ static int mtk_pwm_probe(struct platform_device *pdev)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mtk_pwm_remove(struct platform_device *pdev)
|
||||
static int pwm_mediatek_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct mtk_pwm_chip *pc = platform_get_drvdata(pdev);
|
||||
struct pwm_mediatek_chip *pc = platform_get_drvdata(pdev);
|
||||
|
||||
return pwmchip_remove(&pc->chip);
|
||||
}
|
||||
|
||||
static const struct mtk_pwm_platform_data mt2712_pwm_data = {
|
||||
static const struct pwm_mediatek_of_data mt2712_pwm_data = {
|
||||
.num_pwms = 8,
|
||||
.pwm45_fixup = false,
|
||||
};
|
||||
|
||||
static const struct mtk_pwm_platform_data mt7622_pwm_data = {
|
||||
static const struct pwm_mediatek_of_data mt7622_pwm_data = {
|
||||
.num_pwms = 6,
|
||||
.pwm45_fixup = false,
|
||||
};
|
||||
|
||||
static const struct mtk_pwm_platform_data mt7623_pwm_data = {
|
||||
static const struct pwm_mediatek_of_data mt7623_pwm_data = {
|
||||
.num_pwms = 5,
|
||||
.pwm45_fixup = true,
|
||||
};
|
||||
|
||||
static const struct mtk_pwm_platform_data mt7628_pwm_data = {
|
||||
static const struct pwm_mediatek_of_data mt7628_pwm_data = {
|
||||
.num_pwms = 4,
|
||||
.pwm45_fixup = true,
|
||||
};
|
||||
|
||||
static const struct mtk_pwm_platform_data mt8516_pwm_data = {
|
||||
static const struct pwm_mediatek_of_data mt8516_pwm_data = {
|
||||
.num_pwms = 5,
|
||||
.pwm45_fixup = false,
|
||||
};
|
||||
|
||||
static const struct of_device_id mtk_pwm_of_match[] = {
|
||||
static const struct of_device_id pwm_mediatek_of_match[] = {
|
||||
{ .compatible = "mediatek,mt2712-pwm", .data = &mt2712_pwm_data },
|
||||
{ .compatible = "mediatek,mt7622-pwm", .data = &mt7622_pwm_data },
|
||||
{ .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data },
|
||||
@ -309,17 +312,17 @@ static const struct of_device_id mtk_pwm_of_match[] = {
|
||||
{ .compatible = "mediatek,mt8516-pwm", .data = &mt8516_pwm_data },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, mtk_pwm_of_match);
|
||||
MODULE_DEVICE_TABLE(of, pwm_mediatek_of_match);
|
||||
|
||||
static struct platform_driver mtk_pwm_driver = {
|
||||
static struct platform_driver pwm_mediatek_driver = {
|
||||
.driver = {
|
||||
.name = "mtk-pwm",
|
||||
.of_match_table = mtk_pwm_of_match,
|
||||
.name = "pwm-mediatek",
|
||||
.of_match_table = pwm_mediatek_of_match,
|
||||
},
|
||||
.probe = mtk_pwm_probe,
|
||||
.remove = mtk_pwm_remove,
|
||||
.probe = pwm_mediatek_probe,
|
||||
.remove = pwm_mediatek_remove,
|
||||
};
|
||||
module_platform_driver(mtk_pwm_driver);
|
||||
module_platform_driver(pwm_mediatek_driver);
|
||||
|
||||
MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user