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misc: tps6594-pfsm: Add TI TPS65224 PMIC PFSM

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Add support for TPS65224 PFSM in the TPS6594 PFSM driver as they share
significant functionality.

Signed-off-by: Bhargav Raviprakash <bhargav.r@ltts.com>
Acked-by: Julien Panis <jpanis@baylibre.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/0109018f2fdc9dc4-db5a45c0-0148-48cc-8462-d1c5b577a4bd-000000@ap-south-1.amazonses.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Bhargav Raviprakash 2024-04-30 16:35:38 +00:00 committed by Lee Jones
parent 9d855b8144
commit 91020aecc8
1 changed files with 35 additions and 13 deletions
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48
drivers/misc/tps6594-pfsm.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* PFSM (Pre-configurable Finite State Machine) driver for TI TPS6594/TPS6593/LP8764 PMICs
* PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs
*
* Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
*/
@ -39,10 +39,12 @@
*
* @miscdev: misc device infos
* @regmap: regmap for accessing the device registers
* @chip_id: chip identifier of the device
*/
struct tps6594_pfsm {
struct miscdevice miscdev;
struct regmap *regmap;
unsigned long chip_id;
};
static ssize_t tps6594_pfsm_read(struct file *f, char __user *buf,
@ -133,21 +135,29 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
struct tps6594_pfsm *pfsm = TPS6594_FILE_TO_PFSM(f);
struct pmic_state_opt state_opt;
void __user *argp = (void __user *)arg;
unsigned int regmap_reg, mask;
int ret = -ENOIOCTLCMD;
switch (cmd) {
case PMIC_GOTO_STANDBY:
/* Disable LP mode */
ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
TPS6594_BIT_LP_STANDBY_SEL);
if (ret)
return ret;
/* Disable LP mode on TPS6594 Family PMIC */
if (pfsm->chip_id != TPS65224) {
ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
TPS6594_BIT_LP_STANDBY_SEL);
if (ret)
return ret;
}
/* Force trigger */
ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS,
TPS6594_BIT_TRIGGER_I2C(0), TPS6594_BIT_TRIGGER_I2C(0));
break;
case PMIC_GOTO_LP_STANDBY:
/* TPS65224 does not support LP STANDBY */
if (pfsm->chip_id == TPS65224)
return ret;
/* Enable LP mode */
ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
TPS6594_BIT_LP_STANDBY_SEL);
@ -169,6 +179,10 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
TPS6594_BIT_NSLEEP1B | TPS6594_BIT_NSLEEP2B);
break;
case PMIC_SET_MCU_ONLY_STATE:
/* TPS65224 does not support MCU_ONLY_STATE */
if (pfsm->chip_id == TPS65224)
return ret;
if (copy_from_user(&state_opt, argp, sizeof(state_opt)))
return -EFAULT;
@ -192,14 +206,20 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
return -EFAULT;
/* Configure wake-up destination */
if (pfsm->chip_id == TPS65224) {
regmap_reg = TPS65224_REG_STARTUP_CTRL;
mask = TPS65224_MASK_STARTUP_DEST;
} else {
regmap_reg = TPS6594_REG_RTC_CTRL_2;
mask = TPS6594_MASK_STARTUP_DEST;
}
if (state_opt.mcu_only_startup_dest)
ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
TPS6594_MASK_STARTUP_DEST,
TPS6594_STARTUP_DEST_MCU_ONLY);
ret = regmap_write_bits(pfsm->regmap, regmap_reg,
mask, TPS6594_STARTUP_DEST_MCU_ONLY);
else
ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
TPS6594_MASK_STARTUP_DEST,
TPS6594_STARTUP_DEST_ACTIVE);
ret = regmap_write_bits(pfsm->regmap, regmap_reg,
mask, TPS6594_STARTUP_DEST_ACTIVE);
if (ret)
return ret;
@ -211,7 +231,8 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
/* Modify NSLEEP1-2 bits */
ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,
TPS6594_BIT_NSLEEP2B);
pfsm->chip_id == TPS65224 ?
TPS6594_BIT_NSLEEP1B : TPS6594_BIT_NSLEEP2B);
break;
}
@ -262,6 +283,7 @@ static int tps6594_pfsm_probe(struct platform_device *pdev)
tps->chip_id, tps->reg);
pfsm->miscdev.fops = &tps6594_pfsm_fops;
pfsm->miscdev.parent = dev->parent;
pfsm->chip_id = tps->chip_id;
for (i = 0 ; i < pdev->num_resources ; i++) {
irq = platform_get_irq_byname(pdev, pdev->resource[i].name);