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rtc: pcf2127: adapt for WD registers at any offset

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This will simplify the implementation of new variants into this driver.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Tested-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20230622145800.2442116-9-hugo@hugovil.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Hugo Villeneuve 2023-06-22 10:57:51 -04:00 committed by Alexandre Belloni
parent 7c6f0db41a
commit 6b57ec29e3
1 changed files with 10 additions and 4 deletions
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14
drivers/rtc/rtc-pcf2127.c
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@ -99,6 +99,8 @@ struct pcf21xx_config {
unsigned int has_bit_wd_ctl_cd0:1;
u8 reg_time_base; /* Time/date base register. */
u8 regs_alarm_base; /* Alarm function base registers. */
u8 reg_wd_ctl; /* Watchdog control register. */
u8 reg_wd_val; /* Watchdog value register. */
};
struct pcf2127 {
@ -269,7 +271,7 @@ static int pcf2127_wdt_ping(struct watchdog_device *wdd)
{
struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd);
return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL, wdd->timeout);
return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val, wdd->timeout);
}
/*
@ -303,7 +305,7 @@ static int pcf2127_wdt_stop(struct watchdog_device *wdd)
{
struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd);
return regmap_write(pcf2127->regmap, PCF2127_REG_WD_VAL,
return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val,
PCF2127_WD_VAL_STOP);
}
@ -352,7 +354,7 @@ static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127)
watchdog_set_drvdata(&pcf2127->wdd, pcf2127);
/* Test if watchdog timer is started by bootloader */
ret = regmap_read(pcf2127->regmap, PCF2127_REG_WD_VAL, &wdd_timeout);
ret = regmap_read(pcf2127->regmap, pcf2127->cfg->reg_wd_val, &wdd_timeout);
if (ret)
return ret;
@ -627,6 +629,8 @@ static struct pcf21xx_config pcf21xx_cfg[] = {
.has_bit_wd_ctl_cd0 = 1,
.reg_time_base = PCF2127_REG_TIME_BASE,
.regs_alarm_base = PCF2127_REG_ALARM_BASE,
.reg_wd_ctl = PCF2127_REG_WD_CTL,
.reg_wd_val = PCF2127_REG_WD_VAL,
},
[PCF2129] = {
.type = PCF2129,
@ -635,6 +639,8 @@ static struct pcf21xx_config pcf21xx_cfg[] = {
.has_bit_wd_ctl_cd0 = 0,
.reg_time_base = PCF2127_REG_TIME_BASE,
.regs_alarm_base = PCF2127_REG_ALARM_BASE,
.reg_wd_ctl = PCF2127_REG_WD_CTL,
.reg_wd_val = PCF2127_REG_WD_VAL,
},
};
@ -736,7 +742,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
* as T. Bits labeled as T must always be written with
* logic 0.
*/
ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_WD_CTL,
ret = regmap_update_bits(pcf2127->regmap, pcf2127->cfg->reg_wd_ctl,
PCF2127_BIT_WD_CTL_CD1 |
PCF2127_BIT_WD_CTL_CD0 |
PCF2127_BIT_WD_CTL_TF1 |