pwm: rockchip: Use same PWM ops for each IP
Just use the same PWM ops for each IP, and get rid of the ops in struct rockchip_pwm_data, but still define the three different instances of the struct to use common interface for each IP. Signed-off-by: David Wu <david.wu@rock-chips.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>hifive-unleashed-5.1
David Wu
Thierry Reding
parent
bc834d7b07
commit
831b279050
|
|
@ -50,12 +50,7 @@ struct rockchip_pwm_data {
|
|||
struct rockchip_pwm_regs regs;
|
||||
unsigned int prescaler;
|
||||
bool supports_polarity;
|
||||
const struct pwm_ops *ops;
|
||||
|
||||
void (*get_state)(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
struct pwm_state *state);
|
||||
int (*pwm_apply)(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
struct pwm_state *state);
|
||||
u32 enable_conf;
|
||||
};
|
||||
|
||||
static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *c)
|
||||
|
|
@ -63,45 +58,15 @@ static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *c)
|
|||
return container_of(c, struct rockchip_pwm_chip, chip);
|
||||
}
|
||||
|
||||
static void rockchip_pwm_get_state_v1(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
|
||||
u32 enable_conf = PWM_CTRL_OUTPUT_EN | PWM_CTRL_TIMER_EN;
|
||||
u32 val;
|
||||
|
||||
val = readl_relaxed(pc->base + pc->data->regs.ctrl);
|
||||
if ((val & enable_conf) == enable_conf)
|
||||
state->enabled = true;
|
||||
}
|
||||
|
||||
static void rockchip_pwm_get_state_v2(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
|
||||
u32 enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
|
||||
PWM_CONTINUOUS;
|
||||
u32 val;
|
||||
|
||||
val = readl_relaxed(pc->base + pc->data->regs.ctrl);
|
||||
if ((val & enable_conf) != enable_conf)
|
||||
return;
|
||||
|
||||
state->enabled = true;
|
||||
|
||||
if (!(val & PWM_DUTY_POSITIVE))
|
||||
state->polarity = PWM_POLARITY_INVERSED;
|
||||
}
|
||||
|
||||
static void rockchip_pwm_get_state(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
|
||||
u32 enable_conf = pc->data->enable_conf;
|
||||
unsigned long clk_rate;
|
||||
u64 tmp;
|
||||
u32 val;
|
||||
int ret;
|
||||
|
||||
ret = clk_enable(pc->pclk);
|
||||
|
|
@ -116,9 +81,20 @@ static void rockchip_pwm_get_state(struct pwm_chip *chip,
|
|||
|
||||
tmp = readl_relaxed(pc->base + pc->data->regs.duty);
|
||||
tmp *= pc->data->prescaler * NSEC_PER_SEC;
|
||||
state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, clk_rate);
|
||||
state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, clk_rate);
|
||||
|
||||
pc->data->get_state(chip, pwm, state);
|
||||
val = readl_relaxed(pc->base + pc->data->regs.ctrl);
|
||||
if (pc->data->supports_polarity)
|
||||
state->enabled = ((val & enable_conf) != enable_conf) ?
|
||||
false : true;
|
||||
else
|
||||
state->enabled = ((val & enable_conf) == enable_conf) ?
|
||||
true : false;
|
||||
|
||||
if (pc->data->supports_polarity) {
|
||||
if (!(val & PWM_DUTY_POSITIVE))
|
||||
state->polarity = PWM_POLARITY_INVERSED;
|
||||
}
|
||||
|
||||
clk_disable(pc->pclk);
|
||||
}
|
||||
|
|
@ -161,10 +137,10 @@ static void rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
|
|||
|
||||
static int rockchip_pwm_enable(struct pwm_chip *chip,
|
||||
struct pwm_device *pwm,
|
||||
bool enable,
|
||||
u32 enable_conf)
|
||||
bool enable)
|
||||
{
|
||||
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
|
||||
u32 enable_conf = pc->data->enable_conf;
|
||||
int ret;
|
||||
u32 val;
|
||||
|
||||
|
|
@ -189,74 +165,34 @@ static int rockchip_pwm_enable(struct pwm_chip *chip,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int rockchip_pwm_apply_v1(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
u32 enable_conf = PWM_CTRL_OUTPUT_EN | PWM_CTRL_TIMER_EN;
|
||||
struct pwm_state curstate;
|
||||
bool enabled;
|
||||
int ret = 0;
|
||||
|
||||
pwm_get_state(pwm, &curstate);
|
||||
enabled = curstate.enabled;
|
||||
|
||||
if (state->polarity != curstate.polarity && enabled) {
|
||||
ret = rockchip_pwm_enable(chip, pwm, false, enable_conf);
|
||||
if (ret)
|
||||
return ret;
|
||||
enabled = false;
|
||||
}
|
||||
|
||||
rockchip_pwm_config(chip, pwm, state);
|
||||
|
||||
if (state->enabled != enabled)
|
||||
ret = rockchip_pwm_enable(chip, pwm, state->enabled,
|
||||
enable_conf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rockchip_pwm_apply_v2(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
u32 enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
|
||||
PWM_CONTINUOUS;
|
||||
struct pwm_state curstate;
|
||||
bool enabled;
|
||||
int ret = 0;
|
||||
|
||||
pwm_get_state(pwm, &curstate);
|
||||
enabled = curstate.enabled;
|
||||
|
||||
if (state->polarity != curstate.polarity && enabled) {
|
||||
ret = rockchip_pwm_enable(chip, pwm, false, enable_conf);
|
||||
if (ret)
|
||||
return ret;
|
||||
enabled = false;
|
||||
}
|
||||
|
||||
rockchip_pwm_config(chip, pwm, state);
|
||||
|
||||
if (state->enabled != enabled)
|
||||
ret = rockchip_pwm_enable(chip, pwm, state->enabled,
|
||||
enable_conf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rockchip_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
|
||||
struct pwm_state *state)
|
||||
{
|
||||
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
|
||||
int ret;
|
||||
struct pwm_state curstate;
|
||||
bool enabled;
|
||||
int ret = 0;
|
||||
|
||||
ret = clk_enable(pc->pclk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = pc->data->pwm_apply(chip, pwm, state);
|
||||
if (ret)
|
||||
goto out;
|
||||
pwm_get_state(pwm, &curstate);
|
||||
enabled = curstate.enabled;
|
||||
|
||||
if (state->polarity != curstate.polarity && enabled) {
|
||||
ret = rockchip_pwm_enable(chip, pwm, false);
|
||||
if (ret)
|
||||
goto out;
|
||||
enabled = false;
|
||||
}
|
||||
|
||||
rockchip_pwm_config(chip, pwm, state);
|
||||
if (state->enabled != enabled) {
|
||||
ret = rockchip_pwm_enable(chip, pwm, state->enabled);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
/*
|
||||
* Update the state with the real hardware, which can differ a bit
|
||||
|
|
@ -270,13 +206,7 @@ out:
|
|||
return ret;
|
||||
}
|
||||
|
||||
static const struct pwm_ops rockchip_pwm_ops_v1 = {
|
||||
.get_state = rockchip_pwm_get_state,
|
||||
.apply = rockchip_pwm_apply,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static const struct pwm_ops rockchip_pwm_ops_v2 = {
|
||||
static const struct pwm_ops rockchip_pwm_ops = {
|
||||
.get_state = rockchip_pwm_get_state,
|
||||
.apply = rockchip_pwm_apply,
|
||||
.owner = THIS_MODULE,
|
||||
|
|
@ -290,9 +220,8 @@ static const struct rockchip_pwm_data pwm_data_v1 = {
|
|||
.ctrl = 0x0c,
|
||||
},
|
||||
.prescaler = 2,
|
||||
.ops = &rockchip_pwm_ops_v1,
|
||||
.get_state = rockchip_pwm_get_state_v1,
|
||||
.pwm_apply = rockchip_pwm_apply_v1,
|
||||
.supports_polarity = false,
|
||||
.enable_conf = PWM_CTRL_OUTPUT_EN | PWM_CTRL_TIMER_EN,
|
||||
};
|
||||
|
||||
static const struct rockchip_pwm_data pwm_data_v2 = {
|
||||
|
|
@ -304,9 +233,8 @@ static const struct rockchip_pwm_data pwm_data_v2 = {
|
|||
},
|
||||
.prescaler = 1,
|
||||
.supports_polarity = true,
|
||||
.ops = &rockchip_pwm_ops_v2,
|
||||
.get_state = rockchip_pwm_get_state_v2,
|
||||
.pwm_apply = rockchip_pwm_apply_v2,
|
||||
.enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
|
||||
PWM_CONTINUOUS,
|
||||
};
|
||||
|
||||
static const struct rockchip_pwm_data pwm_data_vop = {
|
||||
|
|
@ -318,9 +246,8 @@ static const struct rockchip_pwm_data pwm_data_vop = {
|
|||
},
|
||||
.prescaler = 1,
|
||||
.supports_polarity = true,
|
||||
.ops = &rockchip_pwm_ops_v2,
|
||||
.get_state = rockchip_pwm_get_state_v2,
|
||||
.pwm_apply = rockchip_pwm_apply_v2,
|
||||
.enable_conf = PWM_OUTPUT_LEFT | PWM_LP_DISABLE | PWM_ENABLE |
|
||||
PWM_CONTINUOUS,
|
||||
};
|
||||
|
||||
static const struct of_device_id rockchip_pwm_dt_ids[] = {
|
||||
|
|
@ -393,7 +320,7 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
|
|||
|
||||
pc->data = id->data;
|
||||
pc->chip.dev = &pdev->dev;
|
||||
pc->chip.ops = pc->data->ops;
|
||||
pc->chip.ops = &rockchip_pwm_ops;
|
||||
pc->chip.base = -1;
|
||||
pc->chip.npwm = 1;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue