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pwm: axi-pwmgen: Rename 0x10 register

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Rename the 0x10 register from REG_CONFIG to REG_RSTN. Also rename the
associated bit macros accordingly.

While touching this, move the bit macros close to the register address
macro for better organization.

According to [1], the name of the 0x10 register is REG_RSTN, and there
is a different register named REG_CONFIG (0x18). So we should not be
using REG_CONFIG for the 0x10 register to avoid confusion.

[1]: http://analogdevicesinc.github.io/hdl/library/axi_pwm_gen/index.html

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20241009-pwm-axi-pwmgen-enable-force_align-v1-1-5d6ad8cbf5b4@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
This commit is contained in:
David Lechner 2024-10-09 16:11:49 -05:00 committed by Uwe Kleine-König
parent 3c25a3d076
commit 2e82d58c7b
1 changed files with 6 additions and 6 deletions
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12
drivers/pwm/pwm-axi-pwmgen.c
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@ -9,7 +9,7 @@
*
* Limitations:
* - The writes to registers for period and duty are shadowed until
* LOAD_CONFIG is written to AXI_PWMGEN_REG_CONFIG, at which point
* LOAD_CONFIG is written to AXI_PWMGEN_REG_RSTN, at which point
* they take effect.
* - Writing LOAD_CONFIG also has the effect of re-synchronizing all
* enabled channels, which could cause glitching on other channels. It
@ -33,14 +33,14 @@
#define AXI_PWMGEN_REG_ID 0x04
#define AXI_PWMGEN_REG_SCRATCHPAD 0x08
#define AXI_PWMGEN_REG_CORE_MAGIC 0x0C
#define AXI_PWMGEN_REG_CONFIG 0x10
#define AXI_PWMGEN_REG_RSTN 0x10
#define AXI_PWMGEN_REG_RSTN_LOAD_CONFIG BIT(1)
#define AXI_PWMGEN_REG_RSTN_RESET BIT(0)
#define AXI_PWMGEN_REG_NPWM 0x14
#define AXI_PWMGEN_CHX_PERIOD(ch) (0x40 + (4 * (ch)))
#define AXI_PWMGEN_CHX_DUTY(ch) (0x80 + (4 * (ch)))
#define AXI_PWMGEN_CHX_OFFSET(ch) (0xC0 + (4 * (ch)))
#define AXI_PWMGEN_REG_CORE_MAGIC_VAL 0x601A3471 /* Identification number to test during setup */
#define AXI_PWMGEN_LOAD_CONFIG BIT(1)
#define AXI_PWMGEN_REG_CONFIG_RESET BIT(0)
struct axi_pwmgen_ddata {
struct regmap *regmap;
@ -152,7 +152,7 @@ static int axi_pwmgen_write_waveform(struct pwm_chip *chip,
if (ret)
return ret;
return regmap_write(regmap, AXI_PWMGEN_REG_CONFIG, AXI_PWMGEN_LOAD_CONFIG);
return regmap_write(regmap, AXI_PWMGEN_REG_RSTN, AXI_PWMGEN_REG_RSTN_LOAD_CONFIG);
}
static int axi_pwmgen_read_waveform(struct pwm_chip *chip,
@ -223,7 +223,7 @@ static int axi_pwmgen_setup(struct regmap *regmap, struct device *dev)
}
/* Enable the core */
ret = regmap_clear_bits(regmap, AXI_PWMGEN_REG_CONFIG, AXI_PWMGEN_REG_CONFIG_RESET);
ret = regmap_clear_bits(regmap, AXI_PWMGEN_REG_RSTN, AXI_PWMGEN_REG_RSTN_RESET);
if (ret)
return ret;