From: Siarhei Volkau <lis8...@gmail.com>
This patch not introduce new features, just prepare code for
adding sun6i PWM driver in next commit.
A31 SoC have a different set of prescalers than others ASoCs, but
its position and count in the control register are the same.
This patch make the table of prescalers customizable.
Signed-off-by: Siarhei Volkau <lis8...@gmail.com>
---
drivers/pwm/pwm-sun4i.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index 04ad3b4..39912fc 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -49,7 +49,7 @@
struct sun4i_pwm_chip;
-static const u32 prescaler_table[] = {
+static const u32 sun4i_prescaler_table[] = {
120,
180,
240,
@@ -81,6 +81,7 @@ struct sun4i_pwm_data {
bool has_rdy;
unsigned int npwm;
const struct sunxi_reg_ops *ops;
+ const u32 *prescaler_table;
};
struct sun4i_pwm_chip {
@@ -144,6 +145,7 @@ static int sun4i_pwm_config(struct pwm_chip *chip, struct
pwm_device *pwm,
{
struct sun4i_pwm_chip *sun4i_pwm = to_sun4i_pwm_chip(chip);
const struct sunxi_reg_ops *reg_ops = sun4i_pwm->data->ops;
+ const u32 *prescaler_table = sun4i_pwm->data->prescaler_table;
u32 prd, dty, val, clk_gate;
u64 clk_rate, div = 0;
unsigned int prescaler = 0;
@@ -317,6 +319,7 @@ static const struct sun4i_pwm_data sun4i_pwm_data_a10 = {
.has_rdy = false,
.npwm = 2,
.ops = &sun4i_reg_ops,
+ .prescaler_table = sun4i_prescaler_table,
};
static const struct sun4i_pwm_data sun4i_pwm_data_a10s = {
@@ -324,6 +327,7 @@ static const struct sun4i_pwm_data sun4i_pwm_data_a10s = {
.has_rdy = true,
.npwm = 2,
.ops = &sun4i_reg_ops,
+ .prescaler_table = sun4i_prescaler_table,
};
static const struct sun4i_pwm_data sun4i_pwm_data_a13 = {
@@ -331,6 +335,7 @@ static const struct sun4i_pwm_data sun4i_pwm_data_a13 = {
.has_rdy = true,
.npwm = 1,
.ops = &sun4i_reg_ops,
+ .prescaler_table = sun4i_prescaler_table,
};
static const struct sun4i_pwm_data sun4i_pwm_data_a20 = {
@@ -338,6 +343,7 @@ static const struct sun4i_pwm_data sun4i_pwm_data_a20 = {
.has_rdy = true,
.npwm = 2,
.ops = &sun4i_reg_ops,
+ .prescaler_table = sun4i_prescaler_table,
};
static const struct sun4i_pwm_data sun4i_pwm_data_h3 = {
@@ -345,6 +351,7 @@ static const struct sun4i_pwm_data sun4i_pwm_data_h3 = {
.has_rdy = true,
.npwm = 1,
.ops = &sun4i_reg_ops,
+ .prescaler_table = sun4i_prescaler_table,
};
static const struct of_device_id sun4i_pwm_dt_ids[] = {
--
2.4.11
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