197fb5e8dSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
292d57a73STrilok Soni /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
392d57a73STrilok Soni */
492d57a73STrilok Soni
592d57a73STrilok Soni #include <linux/module.h>
692d57a73STrilok Soni #include <linux/kernel.h>
792d57a73STrilok Soni #include <linux/errno.h>
892d57a73STrilok Soni #include <linux/slab.h>
992d57a73STrilok Soni #include <linux/input.h>
1092d57a73STrilok Soni #include <linux/interrupt.h>
1192d57a73STrilok Soni #include <linux/platform_device.h>
121e63bd9cSStephen Boyd #include <linux/regmap.h>
1392d57a73STrilok Soni #include <linux/log2.h>
1457918dfaSStephen Boyd #include <linux/of.h>
1592d57a73STrilok Soni
1692d57a73STrilok Soni #define PON_CNTL_1 0x1C
1792d57a73STrilok Soni #define PON_CNTL_PULL_UP BIT(7)
1892d57a73STrilok Soni #define PON_CNTL_TRIG_DELAY_MASK (0x7)
1902b0b79cSStephen Boyd #define PON_CNTL_1_PULL_UP_EN 0xe0
2002b0b79cSStephen Boyd #define PON_CNTL_1_USB_PWR_EN 0x10
2102b0b79cSStephen Boyd #define PON_CNTL_1_WD_EN_RESET 0x08
2202b0b79cSStephen Boyd
2302b0b79cSStephen Boyd #define PM8058_SLEEP_CTRL 0x02b
2402b0b79cSStephen Boyd #define PM8921_SLEEP_CTRL 0x10a
2502b0b79cSStephen Boyd
2602b0b79cSStephen Boyd #define SLEEP_CTRL_SMPL_EN_RESET 0x04
2702b0b79cSStephen Boyd
2802b0b79cSStephen Boyd /* Regulator master enable addresses */
2902b0b79cSStephen Boyd #define REG_PM8058_VREG_EN_MSM 0x018
3002b0b79cSStephen Boyd #define REG_PM8058_VREG_EN_GRP_5_4 0x1c8
3102b0b79cSStephen Boyd
3202b0b79cSStephen Boyd /* Regulator control registers for shutdown/reset */
3302b0b79cSStephen Boyd #define PM8058_S0_CTRL 0x004
3402b0b79cSStephen Boyd #define PM8058_S1_CTRL 0x005
3502b0b79cSStephen Boyd #define PM8058_S3_CTRL 0x111
3602b0b79cSStephen Boyd #define PM8058_L21_CTRL 0x120
3702b0b79cSStephen Boyd #define PM8058_L22_CTRL 0x121
3802b0b79cSStephen Boyd
3902b0b79cSStephen Boyd #define PM8058_REGULATOR_ENABLE_MASK 0x80
4002b0b79cSStephen Boyd #define PM8058_REGULATOR_ENABLE 0x80
4102b0b79cSStephen Boyd #define PM8058_REGULATOR_DISABLE 0x00
4202b0b79cSStephen Boyd #define PM8058_REGULATOR_PULL_DOWN_MASK 0x40
4302b0b79cSStephen Boyd #define PM8058_REGULATOR_PULL_DOWN_EN 0x40
4402b0b79cSStephen Boyd
4502b0b79cSStephen Boyd /* Buck CTRL register */
4602b0b79cSStephen Boyd #define PM8058_SMPS_LEGACY_VREF_SEL 0x20
4702b0b79cSStephen Boyd #define PM8058_SMPS_LEGACY_VPROG_MASK 0x1f
4802b0b79cSStephen Boyd #define PM8058_SMPS_ADVANCED_BAND_MASK 0xC0
4902b0b79cSStephen Boyd #define PM8058_SMPS_ADVANCED_BAND_SHIFT 6
5002b0b79cSStephen Boyd #define PM8058_SMPS_ADVANCED_VPROG_MASK 0x3f
5102b0b79cSStephen Boyd
5202b0b79cSStephen Boyd /* Buck TEST2 registers for shutdown/reset */
5302b0b79cSStephen Boyd #define PM8058_S0_TEST2 0x084
5402b0b79cSStephen Boyd #define PM8058_S1_TEST2 0x085
5502b0b79cSStephen Boyd #define PM8058_S3_TEST2 0x11a
5602b0b79cSStephen Boyd
5702b0b79cSStephen Boyd #define PM8058_REGULATOR_BANK_WRITE 0x80
5802b0b79cSStephen Boyd #define PM8058_REGULATOR_BANK_MASK 0x70
5902b0b79cSStephen Boyd #define PM8058_REGULATOR_BANK_SHIFT 4
6002b0b79cSStephen Boyd #define PM8058_REGULATOR_BANK_SEL(n) ((n) << PM8058_REGULATOR_BANK_SHIFT)
6102b0b79cSStephen Boyd
6202b0b79cSStephen Boyd /* Buck TEST2 register bank 1 */
6302b0b79cSStephen Boyd #define PM8058_SMPS_LEGACY_VLOW_SEL 0x01
6402b0b79cSStephen Boyd
6502b0b79cSStephen Boyd /* Buck TEST2 register bank 7 */
6602b0b79cSStephen Boyd #define PM8058_SMPS_ADVANCED_MODE_MASK 0x02
6702b0b79cSStephen Boyd #define PM8058_SMPS_ADVANCED_MODE 0x02
6802b0b79cSStephen Boyd #define PM8058_SMPS_LEGACY_MODE 0x00
6992d57a73STrilok Soni
7092d57a73STrilok Soni /**
7192d57a73STrilok Soni * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information
7292d57a73STrilok Soni * @key_press_irq: key press irq number
7302b0b79cSStephen Boyd * @regmap: device regmap
7402b0b79cSStephen Boyd * @shutdown_fn: shutdown configuration function
7592d57a73STrilok Soni */
7692d57a73STrilok Soni struct pmic8xxx_pwrkey {
7792d57a73STrilok Soni int key_press_irq;
7802b0b79cSStephen Boyd struct regmap *regmap;
7902b0b79cSStephen Boyd int (*shutdown_fn)(struct pmic8xxx_pwrkey *, bool);
8092d57a73STrilok Soni };
8192d57a73STrilok Soni
pwrkey_press_irq(int irq,void * _pwr)82b27f8feeSStephen Boyd static irqreturn_t pwrkey_press_irq(int irq, void *_pwr)
8392d57a73STrilok Soni {
84b27f8feeSStephen Boyd struct input_dev *pwr = _pwr;
8592d57a73STrilok Soni
86b27f8feeSStephen Boyd input_report_key(pwr, KEY_POWER, 1);
87b27f8feeSStephen Boyd input_sync(pwr);
8892d57a73STrilok Soni
8992d57a73STrilok Soni return IRQ_HANDLED;
9092d57a73STrilok Soni }
9192d57a73STrilok Soni
pwrkey_release_irq(int irq,void * _pwr)92b27f8feeSStephen Boyd static irqreturn_t pwrkey_release_irq(int irq, void *_pwr)
9392d57a73STrilok Soni {
94b27f8feeSStephen Boyd struct input_dev *pwr = _pwr;
9592d57a73STrilok Soni
96b27f8feeSStephen Boyd input_report_key(pwr, KEY_POWER, 0);
97b27f8feeSStephen Boyd input_sync(pwr);
9892d57a73STrilok Soni
9992d57a73STrilok Soni return IRQ_HANDLED;
10092d57a73STrilok Soni }
10192d57a73STrilok Soni
pmic8xxx_pwrkey_suspend(struct device * dev)102*a410677fSJonathan Cameron static int pmic8xxx_pwrkey_suspend(struct device *dev)
10392d57a73STrilok Soni {
10492d57a73STrilok Soni struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
10592d57a73STrilok Soni
10692d57a73STrilok Soni if (device_may_wakeup(dev))
10792d57a73STrilok Soni enable_irq_wake(pwrkey->key_press_irq);
10892d57a73STrilok Soni
10992d57a73STrilok Soni return 0;
11092d57a73STrilok Soni }
11192d57a73STrilok Soni
pmic8xxx_pwrkey_resume(struct device * dev)112*a410677fSJonathan Cameron static int pmic8xxx_pwrkey_resume(struct device *dev)
11392d57a73STrilok Soni {
11492d57a73STrilok Soni struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
11592d57a73STrilok Soni
11692d57a73STrilok Soni if (device_may_wakeup(dev))
11792d57a73STrilok Soni disable_irq_wake(pwrkey->key_press_irq);
11892d57a73STrilok Soni
11992d57a73STrilok Soni return 0;
12092d57a73STrilok Soni }
12192d57a73STrilok Soni
122*a410677fSJonathan Cameron static DEFINE_SIMPLE_DEV_PM_OPS(pm8xxx_pwr_key_pm_ops,
12392d57a73STrilok Soni pmic8xxx_pwrkey_suspend, pmic8xxx_pwrkey_resume);
12492d57a73STrilok Soni
pmic8xxx_pwrkey_shutdown(struct platform_device * pdev)12502b0b79cSStephen Boyd static void pmic8xxx_pwrkey_shutdown(struct platform_device *pdev)
12602b0b79cSStephen Boyd {
12702b0b79cSStephen Boyd struct pmic8xxx_pwrkey *pwrkey = platform_get_drvdata(pdev);
12802b0b79cSStephen Boyd int error;
12902b0b79cSStephen Boyd u8 mask, val;
13002b0b79cSStephen Boyd bool reset = system_state == SYSTEM_RESTART;
13102b0b79cSStephen Boyd
13202b0b79cSStephen Boyd if (pwrkey->shutdown_fn) {
13302b0b79cSStephen Boyd error = pwrkey->shutdown_fn(pwrkey, reset);
13402b0b79cSStephen Boyd if (error)
13502b0b79cSStephen Boyd return;
13602b0b79cSStephen Boyd }
13702b0b79cSStephen Boyd
13802b0b79cSStephen Boyd /*
13902b0b79cSStephen Boyd * Select action to perform (reset or shutdown) when PS_HOLD goes low.
14002b0b79cSStephen Boyd * Also ensure that KPD, CBL0, and CBL1 pull ups are enabled and that
14102b0b79cSStephen Boyd * USB charging is enabled.
14202b0b79cSStephen Boyd */
14302b0b79cSStephen Boyd mask = PON_CNTL_1_PULL_UP_EN | PON_CNTL_1_USB_PWR_EN;
14402b0b79cSStephen Boyd mask |= PON_CNTL_1_WD_EN_RESET;
14502b0b79cSStephen Boyd val = mask;
14602b0b79cSStephen Boyd if (!reset)
14702b0b79cSStephen Boyd val &= ~PON_CNTL_1_WD_EN_RESET;
14802b0b79cSStephen Boyd
14902b0b79cSStephen Boyd regmap_update_bits(pwrkey->regmap, PON_CNTL_1, mask, val);
15002b0b79cSStephen Boyd }
15102b0b79cSStephen Boyd
15202b0b79cSStephen Boyd /*
15302b0b79cSStephen Boyd * Set an SMPS regulator to be disabled in its CTRL register, but enabled
15402b0b79cSStephen Boyd * in the master enable register. Also set it's pull down enable bit.
15502b0b79cSStephen Boyd * Take care to make sure that the output voltage doesn't change if switching
15602b0b79cSStephen Boyd * from advanced mode to legacy mode.
15702b0b79cSStephen Boyd */
pm8058_disable_smps_locally_set_pull_down(struct regmap * regmap,u16 ctrl_addr,u16 test2_addr,u16 master_enable_addr,u8 master_enable_bit)15802b0b79cSStephen Boyd static int pm8058_disable_smps_locally_set_pull_down(struct regmap *regmap,
15902b0b79cSStephen Boyd u16 ctrl_addr, u16 test2_addr, u16 master_enable_addr,
16002b0b79cSStephen Boyd u8 master_enable_bit)
16102b0b79cSStephen Boyd {
16202b0b79cSStephen Boyd int error;
16302b0b79cSStephen Boyd u8 vref_sel, vlow_sel, band, vprog, bank;
16402b0b79cSStephen Boyd unsigned int reg;
16502b0b79cSStephen Boyd
16602b0b79cSStephen Boyd bank = PM8058_REGULATOR_BANK_SEL(7);
16702b0b79cSStephen Boyd error = regmap_write(regmap, test2_addr, bank);
16802b0b79cSStephen Boyd if (error)
16902b0b79cSStephen Boyd return error;
17002b0b79cSStephen Boyd
17102b0b79cSStephen Boyd error = regmap_read(regmap, test2_addr, ®);
17202b0b79cSStephen Boyd if (error)
17302b0b79cSStephen Boyd return error;
17402b0b79cSStephen Boyd
17502b0b79cSStephen Boyd reg &= PM8058_SMPS_ADVANCED_MODE_MASK;
17602b0b79cSStephen Boyd /* Check if in advanced mode. */
17702b0b79cSStephen Boyd if (reg == PM8058_SMPS_ADVANCED_MODE) {
17802b0b79cSStephen Boyd /* Determine current output voltage. */
17902b0b79cSStephen Boyd error = regmap_read(regmap, ctrl_addr, ®);
18002b0b79cSStephen Boyd if (error)
18102b0b79cSStephen Boyd return error;
18202b0b79cSStephen Boyd
18302b0b79cSStephen Boyd band = reg & PM8058_SMPS_ADVANCED_BAND_MASK;
18402b0b79cSStephen Boyd band >>= PM8058_SMPS_ADVANCED_BAND_SHIFT;
18502b0b79cSStephen Boyd switch (band) {
18602b0b79cSStephen Boyd case 3:
18702b0b79cSStephen Boyd vref_sel = 0;
18802b0b79cSStephen Boyd vlow_sel = 0;
18902b0b79cSStephen Boyd break;
19002b0b79cSStephen Boyd case 2:
19102b0b79cSStephen Boyd vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
19202b0b79cSStephen Boyd vlow_sel = 0;
19302b0b79cSStephen Boyd break;
19402b0b79cSStephen Boyd case 1:
19502b0b79cSStephen Boyd vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
19602b0b79cSStephen Boyd vlow_sel = PM8058_SMPS_LEGACY_VLOW_SEL;
19702b0b79cSStephen Boyd break;
19802b0b79cSStephen Boyd default:
19902b0b79cSStephen Boyd pr_err("%s: regulator already disabled\n", __func__);
20002b0b79cSStephen Boyd return -EPERM;
20102b0b79cSStephen Boyd }
20202b0b79cSStephen Boyd vprog = reg & PM8058_SMPS_ADVANCED_VPROG_MASK;
20302b0b79cSStephen Boyd /* Round up if fine step is in use. */
20402b0b79cSStephen Boyd vprog = (vprog + 1) >> 1;
20502b0b79cSStephen Boyd if (vprog > PM8058_SMPS_LEGACY_VPROG_MASK)
20602b0b79cSStephen Boyd vprog = PM8058_SMPS_LEGACY_VPROG_MASK;
20702b0b79cSStephen Boyd
20802b0b79cSStephen Boyd /* Set VLOW_SEL bit. */
20902b0b79cSStephen Boyd bank = PM8058_REGULATOR_BANK_SEL(1);
21002b0b79cSStephen Boyd error = regmap_write(regmap, test2_addr, bank);
21102b0b79cSStephen Boyd if (error)
21202b0b79cSStephen Boyd return error;
21302b0b79cSStephen Boyd
21402b0b79cSStephen Boyd error = regmap_update_bits(regmap, test2_addr,
21502b0b79cSStephen Boyd PM8058_REGULATOR_BANK_WRITE | PM8058_REGULATOR_BANK_MASK
21602b0b79cSStephen Boyd | PM8058_SMPS_LEGACY_VLOW_SEL,
21702b0b79cSStephen Boyd PM8058_REGULATOR_BANK_WRITE |
21802b0b79cSStephen Boyd PM8058_REGULATOR_BANK_SEL(1) | vlow_sel);
21902b0b79cSStephen Boyd if (error)
22002b0b79cSStephen Boyd return error;
22102b0b79cSStephen Boyd
22202b0b79cSStephen Boyd /* Switch to legacy mode */
22302b0b79cSStephen Boyd bank = PM8058_REGULATOR_BANK_SEL(7);
22402b0b79cSStephen Boyd error = regmap_write(regmap, test2_addr, bank);
22502b0b79cSStephen Boyd if (error)
22602b0b79cSStephen Boyd return error;
22702b0b79cSStephen Boyd
22802b0b79cSStephen Boyd error = regmap_update_bits(regmap, test2_addr,
22902b0b79cSStephen Boyd PM8058_REGULATOR_BANK_WRITE |
23002b0b79cSStephen Boyd PM8058_REGULATOR_BANK_MASK |
23102b0b79cSStephen Boyd PM8058_SMPS_ADVANCED_MODE_MASK,
23202b0b79cSStephen Boyd PM8058_REGULATOR_BANK_WRITE |
23302b0b79cSStephen Boyd PM8058_REGULATOR_BANK_SEL(7) |
23402b0b79cSStephen Boyd PM8058_SMPS_LEGACY_MODE);
23502b0b79cSStephen Boyd if (error)
23602b0b79cSStephen Boyd return error;
23702b0b79cSStephen Boyd
23802b0b79cSStephen Boyd /* Enable locally, enable pull down, keep voltage the same. */
23902b0b79cSStephen Boyd error = regmap_update_bits(regmap, ctrl_addr,
24002b0b79cSStephen Boyd PM8058_REGULATOR_ENABLE_MASK |
24102b0b79cSStephen Boyd PM8058_REGULATOR_PULL_DOWN_MASK |
24202b0b79cSStephen Boyd PM8058_SMPS_LEGACY_VREF_SEL |
24302b0b79cSStephen Boyd PM8058_SMPS_LEGACY_VPROG_MASK,
24402b0b79cSStephen Boyd PM8058_REGULATOR_ENABLE | PM8058_REGULATOR_PULL_DOWN_EN
24502b0b79cSStephen Boyd | vref_sel | vprog);
24602b0b79cSStephen Boyd if (error)
24702b0b79cSStephen Boyd return error;
24802b0b79cSStephen Boyd }
24902b0b79cSStephen Boyd
25002b0b79cSStephen Boyd /* Enable in master control register. */
25102b0b79cSStephen Boyd error = regmap_update_bits(regmap, master_enable_addr,
25202b0b79cSStephen Boyd master_enable_bit, master_enable_bit);
25302b0b79cSStephen Boyd if (error)
25402b0b79cSStephen Boyd return error;
25502b0b79cSStephen Boyd
25602b0b79cSStephen Boyd /* Disable locally and enable pull down. */
25702b0b79cSStephen Boyd return regmap_update_bits(regmap, ctrl_addr,
25802b0b79cSStephen Boyd PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
25902b0b79cSStephen Boyd PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
26002b0b79cSStephen Boyd }
26102b0b79cSStephen Boyd
pm8058_disable_ldo_locally_set_pull_down(struct regmap * regmap,u16 ctrl_addr,u16 master_enable_addr,u8 master_enable_bit)26202b0b79cSStephen Boyd static int pm8058_disable_ldo_locally_set_pull_down(struct regmap *regmap,
26302b0b79cSStephen Boyd u16 ctrl_addr, u16 master_enable_addr, u8 master_enable_bit)
26402b0b79cSStephen Boyd {
26502b0b79cSStephen Boyd int error;
26602b0b79cSStephen Boyd
26702b0b79cSStephen Boyd /* Enable LDO in master control register. */
26802b0b79cSStephen Boyd error = regmap_update_bits(regmap, master_enable_addr,
26902b0b79cSStephen Boyd master_enable_bit, master_enable_bit);
27002b0b79cSStephen Boyd if (error)
27102b0b79cSStephen Boyd return error;
27202b0b79cSStephen Boyd
27302b0b79cSStephen Boyd /* Disable LDO in CTRL register and set pull down */
27402b0b79cSStephen Boyd return regmap_update_bits(regmap, ctrl_addr,
27502b0b79cSStephen Boyd PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
27602b0b79cSStephen Boyd PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
27702b0b79cSStephen Boyd }
27802b0b79cSStephen Boyd
pm8058_pwrkey_shutdown(struct pmic8xxx_pwrkey * pwrkey,bool reset)27902b0b79cSStephen Boyd static int pm8058_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)
28002b0b79cSStephen Boyd {
28102b0b79cSStephen Boyd int error;
28202b0b79cSStephen Boyd struct regmap *regmap = pwrkey->regmap;
28302b0b79cSStephen Boyd u8 mask, val;
28402b0b79cSStephen Boyd
28502b0b79cSStephen Boyd /* When shutting down, enable active pulldowns on important rails. */
28602b0b79cSStephen Boyd if (!reset) {
28702b0b79cSStephen Boyd /* Disable SMPS's 0,1,3 locally and set pulldown enable bits. */
28802b0b79cSStephen Boyd pm8058_disable_smps_locally_set_pull_down(regmap,
28902b0b79cSStephen Boyd PM8058_S0_CTRL, PM8058_S0_TEST2,
29002b0b79cSStephen Boyd REG_PM8058_VREG_EN_MSM, BIT(7));
29102b0b79cSStephen Boyd pm8058_disable_smps_locally_set_pull_down(regmap,
29202b0b79cSStephen Boyd PM8058_S1_CTRL, PM8058_S1_TEST2,
29302b0b79cSStephen Boyd REG_PM8058_VREG_EN_MSM, BIT(6));
29402b0b79cSStephen Boyd pm8058_disable_smps_locally_set_pull_down(regmap,
29502b0b79cSStephen Boyd PM8058_S3_CTRL, PM8058_S3_TEST2,
29602b0b79cSStephen Boyd REG_PM8058_VREG_EN_GRP_5_4, BIT(7) | BIT(4));
29702b0b79cSStephen Boyd /* Disable LDO 21 locally and set pulldown enable bit. */
29802b0b79cSStephen Boyd pm8058_disable_ldo_locally_set_pull_down(regmap,
29902b0b79cSStephen Boyd PM8058_L21_CTRL, REG_PM8058_VREG_EN_GRP_5_4,
30002b0b79cSStephen Boyd BIT(1));
30102b0b79cSStephen Boyd }
30202b0b79cSStephen Boyd
30302b0b79cSStephen Boyd /*
30402b0b79cSStephen Boyd * Fix-up: Set regulator LDO22 to 1.225 V in high power mode. Leave its
30502b0b79cSStephen Boyd * pull-down state intact. This ensures a safe shutdown.
30602b0b79cSStephen Boyd */
30702b0b79cSStephen Boyd error = regmap_update_bits(regmap, PM8058_L22_CTRL, 0xbf, 0x93);
30802b0b79cSStephen Boyd if (error)
30902b0b79cSStephen Boyd return error;
31002b0b79cSStephen Boyd
31102b0b79cSStephen Boyd /* Enable SMPL if resetting is desired */
31202b0b79cSStephen Boyd mask = SLEEP_CTRL_SMPL_EN_RESET;
31302b0b79cSStephen Boyd val = 0;
31402b0b79cSStephen Boyd if (reset)
31502b0b79cSStephen Boyd val = mask;
31602b0b79cSStephen Boyd return regmap_update_bits(regmap, PM8058_SLEEP_CTRL, mask, val);
31702b0b79cSStephen Boyd }
31802b0b79cSStephen Boyd
pm8921_pwrkey_shutdown(struct pmic8xxx_pwrkey * pwrkey,bool reset)31902b0b79cSStephen Boyd static int pm8921_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)
32002b0b79cSStephen Boyd {
32102b0b79cSStephen Boyd struct regmap *regmap = pwrkey->regmap;
32202b0b79cSStephen Boyd u8 mask = SLEEP_CTRL_SMPL_EN_RESET;
32302b0b79cSStephen Boyd u8 val = 0;
32402b0b79cSStephen Boyd
32502b0b79cSStephen Boyd /* Enable SMPL if resetting is desired */
32602b0b79cSStephen Boyd if (reset)
32702b0b79cSStephen Boyd val = mask;
32802b0b79cSStephen Boyd return regmap_update_bits(regmap, PM8921_SLEEP_CTRL, mask, val);
32902b0b79cSStephen Boyd }
33002b0b79cSStephen Boyd
pmic8xxx_pwrkey_probe(struct platform_device * pdev)3315298cc4cSBill Pemberton static int pmic8xxx_pwrkey_probe(struct platform_device *pdev)
33292d57a73STrilok Soni {
33392d57a73STrilok Soni struct input_dev *pwr;
33492d57a73STrilok Soni int key_release_irq = platform_get_irq(pdev, 0);
33592d57a73STrilok Soni int key_press_irq = platform_get_irq(pdev, 1);
33692d57a73STrilok Soni int err;
33792d57a73STrilok Soni unsigned int delay;
3381e63bd9cSStephen Boyd unsigned int pon_cntl;
3391e63bd9cSStephen Boyd struct regmap *regmap;
34092d57a73STrilok Soni struct pmic8xxx_pwrkey *pwrkey;
34157918dfaSStephen Boyd u32 kpd_delay;
34257918dfaSStephen Boyd bool pull_up;
34392d57a73STrilok Soni
34457918dfaSStephen Boyd if (of_property_read_u32(pdev->dev.of_node, "debounce", &kpd_delay))
34570a26071SStephen Boyd kpd_delay = 15625;
34692d57a73STrilok Soni
347eda5ecc0SStephen Boyd /* Valid range of pwr key trigger delay is 1/64 sec to 2 seconds. */
348eda5ecc0SStephen Boyd if (kpd_delay > USEC_PER_SEC * 2 || kpd_delay < USEC_PER_SEC / 64) {
34992d57a73STrilok Soni dev_err(&pdev->dev, "invalid power key trigger delay\n");
35092d57a73STrilok Soni return -EINVAL;
35192d57a73STrilok Soni }
35292d57a73STrilok Soni
35370a26071SStephen Boyd pull_up = of_property_read_bool(pdev->dev.of_node, "pull-up");
35470a26071SStephen Boyd
3551e63bd9cSStephen Boyd regmap = dev_get_regmap(pdev->dev.parent, NULL);
3561e63bd9cSStephen Boyd if (!regmap) {
3571e63bd9cSStephen Boyd dev_err(&pdev->dev, "failed to locate regmap for the device\n");
3581e63bd9cSStephen Boyd return -ENODEV;
3591e63bd9cSStephen Boyd }
3601e63bd9cSStephen Boyd
361eb735d3bSDmitry Torokhov pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);
36292d57a73STrilok Soni if (!pwrkey)
36392d57a73STrilok Soni return -ENOMEM;
36492d57a73STrilok Soni
36502b0b79cSStephen Boyd pwrkey->shutdown_fn = of_device_get_match_data(&pdev->dev);
36602b0b79cSStephen Boyd pwrkey->regmap = regmap;
367eb735d3bSDmitry Torokhov pwrkey->key_press_irq = key_press_irq;
368eb735d3bSDmitry Torokhov
369eb735d3bSDmitry Torokhov pwr = devm_input_allocate_device(&pdev->dev);
37092d57a73STrilok Soni if (!pwr) {
37192d57a73STrilok Soni dev_dbg(&pdev->dev, "Can't allocate power button\n");
372eb735d3bSDmitry Torokhov return -ENOMEM;
37392d57a73STrilok Soni }
37492d57a73STrilok Soni
37592d57a73STrilok Soni input_set_capability(pwr, EV_KEY, KEY_POWER);
37692d57a73STrilok Soni
37792d57a73STrilok Soni pwr->name = "pmic8xxx_pwrkey";
37892d57a73STrilok Soni pwr->phys = "pmic8xxx_pwrkey/input0";
37992d57a73STrilok Soni
380eda5ecc0SStephen Boyd delay = (kpd_delay << 6) / USEC_PER_SEC;
381eda5ecc0SStephen Boyd delay = ilog2(delay);
38292d57a73STrilok Soni
3831e63bd9cSStephen Boyd err = regmap_read(regmap, PON_CNTL_1, &pon_cntl);
38492d57a73STrilok Soni if (err < 0) {
38592d57a73STrilok Soni dev_err(&pdev->dev, "failed reading PON_CNTL_1 err=%d\n", err);
386eb735d3bSDmitry Torokhov return err;
38792d57a73STrilok Soni }
38892d57a73STrilok Soni
38992d57a73STrilok Soni pon_cntl &= ~PON_CNTL_TRIG_DELAY_MASK;
39092d57a73STrilok Soni pon_cntl |= (delay & PON_CNTL_TRIG_DELAY_MASK);
39157918dfaSStephen Boyd if (pull_up)
39292d57a73STrilok Soni pon_cntl |= PON_CNTL_PULL_UP;
39392d57a73STrilok Soni else
39492d57a73STrilok Soni pon_cntl &= ~PON_CNTL_PULL_UP;
39592d57a73STrilok Soni
3961e63bd9cSStephen Boyd err = regmap_write(regmap, PON_CNTL_1, pon_cntl);
39792d57a73STrilok Soni if (err < 0) {
39892d57a73STrilok Soni dev_err(&pdev->dev, "failed writing PON_CNTL_1 err=%d\n", err);
399eb735d3bSDmitry Torokhov return err;
400eb735d3bSDmitry Torokhov }
401eb735d3bSDmitry Torokhov
402eb735d3bSDmitry Torokhov err = devm_request_irq(&pdev->dev, key_press_irq, pwrkey_press_irq,
403eb735d3bSDmitry Torokhov IRQF_TRIGGER_RISING,
404eb735d3bSDmitry Torokhov "pmic8xxx_pwrkey_press", pwr);
405eb735d3bSDmitry Torokhov if (err) {
406eb735d3bSDmitry Torokhov dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
407eb735d3bSDmitry Torokhov key_press_irq, err);
408eb735d3bSDmitry Torokhov return err;
409eb735d3bSDmitry Torokhov }
410eb735d3bSDmitry Torokhov
411eb735d3bSDmitry Torokhov err = devm_request_irq(&pdev->dev, key_release_irq, pwrkey_release_irq,
412eb735d3bSDmitry Torokhov IRQF_TRIGGER_RISING,
413eb735d3bSDmitry Torokhov "pmic8xxx_pwrkey_release", pwr);
414eb735d3bSDmitry Torokhov if (err) {
415eb735d3bSDmitry Torokhov dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
416eb735d3bSDmitry Torokhov key_release_irq, err);
417eb735d3bSDmitry Torokhov return err;
41892d57a73STrilok Soni }
41992d57a73STrilok Soni
42092d57a73STrilok Soni err = input_register_device(pwr);
42192d57a73STrilok Soni if (err) {
422eb735d3bSDmitry Torokhov dev_err(&pdev->dev, "Can't register power key: %d\n", err);
423eb735d3bSDmitry Torokhov return err;
42492d57a73STrilok Soni }
42592d57a73STrilok Soni
42692d57a73STrilok Soni platform_set_drvdata(pdev, pwrkey);
42757918dfaSStephen Boyd device_init_wakeup(&pdev->dev, 1);
42892d57a73STrilok Soni
42992d57a73STrilok Soni return 0;
43092d57a73STrilok Soni }
43192d57a73STrilok Soni
43257918dfaSStephen Boyd static const struct of_device_id pm8xxx_pwr_key_id_table[] = {
43302b0b79cSStephen Boyd { .compatible = "qcom,pm8058-pwrkey", .data = &pm8058_pwrkey_shutdown },
43402b0b79cSStephen Boyd { .compatible = "qcom,pm8921-pwrkey", .data = &pm8921_pwrkey_shutdown },
43557918dfaSStephen Boyd { }
43657918dfaSStephen Boyd };
43757918dfaSStephen Boyd MODULE_DEVICE_TABLE(of, pm8xxx_pwr_key_id_table);
43857918dfaSStephen Boyd
43992d57a73STrilok Soni static struct platform_driver pmic8xxx_pwrkey_driver = {
44092d57a73STrilok Soni .probe = pmic8xxx_pwrkey_probe,
44102b0b79cSStephen Boyd .shutdown = pmic8xxx_pwrkey_shutdown,
44292d57a73STrilok Soni .driver = {
44357918dfaSStephen Boyd .name = "pm8xxx-pwrkey",
444*a410677fSJonathan Cameron .pm = pm_sleep_ptr(&pm8xxx_pwr_key_pm_ops),
44557918dfaSStephen Boyd .of_match_table = pm8xxx_pwr_key_id_table,
44692d57a73STrilok Soni },
44792d57a73STrilok Soni };
448840a746bSJJ Ding module_platform_driver(pmic8xxx_pwrkey_driver);
44992d57a73STrilok Soni
45092d57a73STrilok Soni MODULE_ALIAS("platform:pmic8xxx_pwrkey");
45192d57a73STrilok Soni MODULE_DESCRIPTION("PMIC8XXX Power Key driver");
45292d57a73STrilok Soni MODULE_LICENSE("GPL v2");
45392d57a73STrilok Soni MODULE_AUTHOR("Trilok Soni <tsoni@codeaurora.org>");
454