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hwmon: (npcm750-pwm-fan) Add NPCM8xx support

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Adding Pulse Width Modulation (PWM) and fan tacho NPCM8xx support to
NPCM PWM and fan tacho driver.
NPCM8xx uses a different number of PWM devices.

As part of adding NPCM8XX support:
- Add NPCM8xx specific compatible string.
- Add data to handle architecture-specific PWM parameters.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Link: https://lore.kernel.org/r/20231031075806.400872-2-tmaimon77@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Tomer Maimon 2023-10-31 09:58:06 +02:00 committed by Guenter Roeck
parent a39b6ac378
commit 89fec128d5
1 changed files with 26 additions and 4 deletions
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30
drivers/hwmon/npcm750-pwm-fan.c
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@ -46,9 +46,9 @@
#define NPCM7XX_PWM_CTRL_CH3_EN_BIT BIT(16)
/* Define the maximum PWM channel number */
#define NPCM7XX_PWM_MAX_CHN_NUM 8
#define NPCM7XX_PWM_MAX_CHN_NUM 12
#define NPCM7XX_PWM_MAX_CHN_NUM_IN_A_MODULE 4
#define NPCM7XX_PWM_MAX_MODULES 2
#define NPCM7XX_PWM_MAX_MODULES 3
/* Define the Counter Register, value = 100 for match 100% */
#define NPCM7XX_PWM_COUNTER_DEFAULT_NUM 255
@ -171,6 +171,10 @@
#define FAN_PREPARE_TO_GET_FIRST_CAPTURE 0x01
#define FAN_ENOUGH_SAMPLE 0x02
struct npcm_hwmon_info {
u32 pwm_max_channel;
};
struct npcm7xx_fan_dev {
u8 fan_st_flg;
u8 fan_pls_per_rev;
@ -204,6 +208,7 @@ struct npcm7xx_pwm_fan_data {
struct timer_list fan_timer;
struct npcm7xx_fan_dev fan_dev[NPCM7XX_FAN_MAX_CHN_NUM];
struct npcm7xx_cooling_device *cdev[NPCM7XX_PWM_MAX_CHN_NUM];
const struct npcm_hwmon_info *info;
u8 fan_select;
};
@ -542,7 +547,7 @@ static umode_t npcm7xx_pwm_is_visible(const void *_data, u32 attr, int channel)
{
const struct npcm7xx_pwm_fan_data *data = _data;
if (!data->pwm_present[channel])
if (!data->pwm_present[channel] || channel >= data->info->pwm_max_channel)
return 0;
switch (attr) {
@ -638,6 +643,10 @@ static const struct hwmon_channel_info * const npcm7xx_info[] = {
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT,
HWMON_PWM_INPUT),
HWMON_CHANNEL_INFO(fan,
HWMON_F_INPUT,
@ -670,6 +679,14 @@ static const struct hwmon_chip_info npcm7xx_chip_info = {
.info = npcm7xx_info,
};
static const struct npcm_hwmon_info npxm7xx_hwmon_info = {
.pwm_max_channel = 8,
};
static const struct npcm_hwmon_info npxm8xx_hwmon_info = {
.pwm_max_channel = 12,
};
static u32 npcm7xx_pwm_init(struct npcm7xx_pwm_fan_data *data)
{
int m, ch;
@ -925,6 +942,10 @@ static int npcm7xx_pwm_fan_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;
data->info = device_get_match_data(dev);
if (!data->info)
return -EINVAL;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwm");
if (!res) {
dev_err(dev, "pwm resource not found\n");
@ -1017,7 +1038,8 @@ static int npcm7xx_pwm_fan_probe(struct platform_device *pdev)
}
static const struct of_device_id of_pwm_fan_match_table[] = {
{ .compatible = "nuvoton,npcm750-pwm-fan", },
{ .compatible = "nuvoton,npcm750-pwm-fan", .data = &npxm7xx_hwmon_info},
{ .compatible = "nuvoton,npcm845-pwm-fan", .data = &npxm8xx_hwmon_info},
{},
};
MODULE_DEVICE_TABLE(of, of_pwm_fan_match_table);