From e80fb721cac4202253939451678c873a222be2fa Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 7 Apr 2014 14:15:24 +0200 Subject: [PATCH 1/9] regulator: s5m8767: Remove regulator_dev pointer from state container Don't store pointer to regulator_dev returned by devm_regulator_register() in state container. It isn't used anywhere outside of probe. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/regulator/s5m8767.c | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c index 92f19a005dc3..5daa06626f16 100644 --- a/drivers/regulator/s5m8767.c +++ b/drivers/regulator/s5m8767.c @@ -28,7 +28,6 @@ struct s5m8767_info { struct device *dev; struct sec_pmic_dev *iodev; int num_regulators; - struct regulator_dev **rdev; struct sec_opmode_data *opmode; int ramp_delay; @@ -695,7 +694,6 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct sec_platform_data *pdata = iodev->pdata; struct regulator_config config = { }; - struct regulator_dev **rdev; struct s5m8767_info *s5m8767; int i, ret, size, buck_init; @@ -737,11 +735,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) return -ENOMEM; size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2); - s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); - if (!s5m8767->rdev) - return -ENOMEM; - rdev = s5m8767->rdev; s5m8767->dev = &pdev->dev; s5m8767->iodev = iodev; s5m8767->num_regulators = pdata->num_regulators; @@ -938,6 +932,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) const struct sec_voltage_desc *desc; int id = pdata->regulators[i].id; int enable_reg, enable_val; + struct regulator_dev *rdev; desc = reg_voltage_map[id]; if (desc) { @@ -969,21 +964,21 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) s5m8767_regulator_config_ext_control(s5m8767, &pdata->regulators[i], &config); - rdev[i] = devm_regulator_register(&pdev->dev, ®ulators[id], + rdev = devm_regulator_register(&pdev->dev, ®ulators[id], &config); - if (IS_ERR(rdev[i])) { - ret = PTR_ERR(rdev[i]); + if (IS_ERR(rdev)) { + ret = PTR_ERR(rdev); dev_err(s5m8767->dev, "regulator init failed for %d\n", id); return ret; } if (pdata->regulators[i].ext_control_gpio) { - ret = s5m8767_enable_ext_control(s5m8767, rdev[i]); + ret = s5m8767_enable_ext_control(s5m8767, rdev); if (ret < 0) { dev_err(s5m8767->dev, "failed to enable gpio control over %s: %d\n", - rdev[i]->desc->name, ret); + rdev->desc->name, ret); return ret; } } From 073a77d03ee88ae3a5504b3f73632841a55d60a1 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 15 Apr 2014 19:47:38 +0800 Subject: [PATCH 2/9] regulator: tps65217: Remove *rdev[] from struct tps65217 Now this driver uses devm_regulator_register() so we don't need to save rdev pointer to tps->rdev[i] for cleanup. Signed-off-by: Axel Lin Acked-by: Lee Jones Signed-off-by: Mark Brown --- drivers/regulator/tps65217-regulator.c | 3 --- include/linux/mfd/tps65217.h | 1 - 2 files changed, 4 deletions(-) diff --git a/drivers/regulator/tps65217-regulator.c b/drivers/regulator/tps65217-regulator.c index 10b78d2b766a..8482f6ba08a1 100644 --- a/drivers/regulator/tps65217-regulator.c +++ b/drivers/regulator/tps65217-regulator.c @@ -257,9 +257,6 @@ static int tps65217_regulator_probe(struct platform_device *pdev) pdev->name); return PTR_ERR(rdev); } - - /* Save regulator for cleanup */ - tps->rdev[i] = rdev; } return 0; } diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h index 54b5458ec084..95d6938737fd 100644 --- a/include/linux/mfd/tps65217.h +++ b/include/linux/mfd/tps65217.h @@ -254,7 +254,6 @@ struct tps65217 { struct tps65217_board *pdata; unsigned long id; struct regulator_desc desc[TPS65217_NUM_REGULATOR]; - struct regulator_dev *rdev[TPS65217_NUM_REGULATOR]; struct regmap *regmap; }; From 290414499cf94284a97cc3c33214d13ccfcd896a Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Wed, 16 Apr 2014 16:12:28 -0700 Subject: [PATCH 3/9] regulator: tps65090: Allow setting the overcurrent wait time The tps65090 regulator allows you to specify how long you want it to wait before detecting an overcurrent condition. Allow specifying that through the device tree (or through platform data). Signed-off-by: Doug Anderson Signed-off-by: Simon Glass Signed-off-by: Michael Spang Signed-off-by: Sean Paul Signed-off-by: Mark Brown --- .../bindings/regulator/tps65090.txt | 4 ++ drivers/regulator/tps65090-regulator.c | 56 +++++++++++++++++++ include/linux/mfd/tps65090.h | 5 ++ 3 files changed, 65 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/tps65090.txt b/Documentation/devicetree/bindings/regulator/tps65090.txt index 313a60ba61d8..340980239ea9 100644 --- a/Documentation/devicetree/bindings/regulator/tps65090.txt +++ b/Documentation/devicetree/bindings/regulator/tps65090.txt @@ -21,6 +21,10 @@ Optional properties: number should be provided. If it is externally controlled and no GPIO entry then driver will just configure this rails as external control and will not provide any enable/disable APIs. +- ti,overcurrent-wait: This is applicable to FET registers, which have a + poorly defined "overcurrent wait" field. If this property is present it + should be between 0 - 3. If this property isn't present we won't touch the + "overcurrent wait" field and we'll leave it to the BIOS/EC to deal with. Each regulator is defined using the standard binding for regulators. diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c index 2e92ef68574d..ca04e9f010e1 100644 --- a/drivers/regulator/tps65090-regulator.c +++ b/drivers/regulator/tps65090-regulator.c @@ -28,15 +28,58 @@ #include #include +#define CTRL_WT_BIT 2 /* Regulator wait time 0 bit */ + +#define MAX_OVERCURRENT_WAIT 3 /* Overcurrent wait must be <= this */ + +/** + * struct tps65090_regulator - Per-regulator data for a tps65090 regulator + * + * @dev: Pointer to our device. + * @desc: The struct regulator_desc for the regulator. + * @rdev: The struct regulator_dev for the regulator. + * @overcurrent_wait_valid: True if overcurrent_wait is valid. + * @overcurrent_wait: For FETs, the value to put in the WTFET bitfield. + */ + struct tps65090_regulator { struct device *dev; struct regulator_desc *desc; struct regulator_dev *rdev; + bool overcurrent_wait_valid; + int overcurrent_wait; }; static struct regulator_ops tps65090_ext_control_ops = { }; +/** + * tps65090_reg_set_overcurrent_wait - Setup overcurrent wait + * + * This will set the overcurrent wait time based on what's in the regulator + * info. + * + * @ri: Overall regulator data + * @rdev: Regulator device + * + * Return: 0 if no error, non-zero if there was an error writing the register. + */ +static int tps65090_reg_set_overcurrent_wait(struct tps65090_regulator *ri, + struct regulator_dev *rdev) +{ + int ret; + + ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + MAX_OVERCURRENT_WAIT << CTRL_WT_BIT, + ri->overcurrent_wait << CTRL_WT_BIT); + if (ret) { + dev_err(&rdev->dev, "Error updating overcurrent wait %#x\n", + rdev->desc->enable_reg); + } + + return ret; +} + static struct regulator_ops tps65090_reg_contol_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, @@ -209,6 +252,11 @@ static struct tps65090_platform_data *tps65090_parse_dt_reg_data( rpdata->gpio = of_get_named_gpio(np, "dcdc-ext-control-gpios", 0); + if (of_property_read_u32(tps65090_matches[idx].of_node, + "ti,overcurrent-wait", + &rpdata->overcurrent_wait) == 0) + rpdata->overcurrent_wait_valid = true; + tps65090_pdata->reg_pdata[idx] = rpdata; } return tps65090_pdata; @@ -258,6 +306,8 @@ static int tps65090_regulator_probe(struct platform_device *pdev) ri = &pmic[num]; ri->dev = &pdev->dev; ri->desc = &tps65090_regulator_desc[num]; + ri->overcurrent_wait_valid = tps_pdata->overcurrent_wait_valid; + ri->overcurrent_wait = tps_pdata->overcurrent_wait; /* * TPS5090 DCDC support the control from external digital input. @@ -299,6 +349,12 @@ static int tps65090_regulator_probe(struct platform_device *pdev) } ri->rdev = rdev; + if (ri->overcurrent_wait_valid) { + ret = tps65090_reg_set_overcurrent_wait(ri, rdev); + if (ret < 0) + return ret; + } + /* Enable external control if it is require */ if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data && tps_pdata->enable_ext_control) { diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 3f43069413e7..f25adfa97c73 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -78,11 +78,16 @@ struct tps65090 { * DCDC1, DCDC2 and DCDC3. * @gpio: Gpio number if external control is enabled and controlled through * gpio. + * @overcurrent_wait_valid: True if the overcurrent_wait should be applied. + * @overcurrent_wait: Value to set as the overcurrent wait time. This is the + * actual bitfield value, not a time in ms (valid value are 0 - 3). */ struct tps65090_regulator_plat_data { struct regulator_init_data *reg_init_data; bool enable_ext_control; int gpio; + bool overcurrent_wait_valid; + int overcurrent_wait; }; struct tps65090_platform_data { From 5957ae1fdc50de61d08735d7132ae4f70ae357f7 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 15 Apr 2014 19:55:35 +0800 Subject: [PATCH 4/9] regulator: tps65217: Use regulator_map_voltage_ascend for LDO1 The voltages in LDO1_VSEL_table are in ascendant order, so use regulator_map_voltage_ascend. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/tps65217-regulator.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/regulator/tps65217-regulator.c b/drivers/regulator/tps65217-regulator.c index 8482f6ba08a1..f7ed20a5a8b9 100644 --- a/drivers/regulator/tps65217-regulator.c +++ b/drivers/regulator/tps65217-regulator.c @@ -134,6 +134,7 @@ static struct regulator_ops tps65217_pmic_ldo1_ops = { .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = tps65217_pmic_set_voltage_sel, .list_voltage = regulator_list_voltage_table, + .map_voltage = regulator_map_voltage_ascend, }; static const struct regulator_desc regulators[] = { From ed11f1ead54bf0398a4303b51125622113c9c9e1 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Wed, 23 Apr 2014 08:56:05 -0700 Subject: [PATCH 5/9] regulator: tps65090: Make FETs more reliable by adding retries An issue was discovered with tps65090 where sometimes the FETs wouldn't actually turn on when requested (they would report overcurrent). The most problematic FET was the one used for the LCD backlight on the Samsung ARM Chromebook (FET1). Problems were especially prevalent when the device was plugged in to AC power (when the backlight voltage was higher). Mitigate the problem by adding retries on the enables of the FETs, which works around the problem fairly effectively. Signed-off-by: Doug Anderson Signed-off-by: Simon Glass Signed-off-by: Michael Spang Signed-off-by: Sean Paul Reviewed-by: Simon Glass Signed-off-by: Mark Brown --- drivers/regulator/tps65090-regulator.c | 155 ++++++++++++++++++++++--- 1 file changed, 140 insertions(+), 15 deletions(-) diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c index ca04e9f010e1..2057e2e311de 100644 --- a/drivers/regulator/tps65090-regulator.c +++ b/drivers/regulator/tps65090-regulator.c @@ -17,6 +17,7 @@ */ #include +#include #include #include #include @@ -28,7 +29,13 @@ #include #include +#define MAX_CTRL_READ_TRIES 5 +#define MAX_FET_ENABLE_TRIES 1000 + +#define CTRL_EN_BIT 0 /* Regulator enable bit, active high */ #define CTRL_WT_BIT 2 /* Regulator wait time 0 bit */ +#define CTRL_PG_BIT 4 /* Regulator power good bit, 1=good */ +#define CTRL_TO_BIT 7 /* Regulator timeout bit, 1=wait */ #define MAX_OVERCURRENT_WAIT 3 /* Overcurrent wait must be <= this */ @@ -80,40 +87,158 @@ static int tps65090_reg_set_overcurrent_wait(struct tps65090_regulator *ri, return ret; } -static struct regulator_ops tps65090_reg_contol_ops = { +/** + * tps65090_try_enable_fet - Try to enable a FET + * + * @rdev: Regulator device + * + * Return: 0 if ok, -ENOTRECOVERABLE if the FET power good bit did not get + * set, or some other -ve value if another error occurred (e.g. i2c error) + */ +static int tps65090_try_enable_fet(struct regulator_dev *rdev) +{ + unsigned int control; + int ret, i; + + ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, + rdev->desc->enable_mask); + if (ret < 0) { + dev_err(&rdev->dev, "Error in updating reg %#x\n", + rdev->desc->enable_reg); + return ret; + } + + for (i = 0; i < MAX_CTRL_READ_TRIES; i++) { + ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, + &control); + if (ret < 0) + return ret; + + if (!(control & BIT(CTRL_TO_BIT))) + break; + + usleep_range(1000, 1500); + } + if (!(control & BIT(CTRL_PG_BIT))) + return -ENOTRECOVERABLE; + + return 0; +} + +/** + * tps65090_fet_enable - Enable a FET, trying a few times if it fails + * + * Some versions of the tps65090 have issues when turning on the FETs. + * This function goes through several steps to ensure the best chance of the + * FET going on. Specifically: + * - We'll make sure that we bump the "overcurrent wait" to the maximum, which + * increases the chances that we'll turn on properly. + * - We'll retry turning the FET on multiple times (turning off in between). + * + * @rdev: Regulator device + * + * Return: 0 if ok, non-zero if it fails. + */ +static int tps65090_fet_enable(struct regulator_dev *rdev) +{ + int ret, tries; + + /* + * Try enabling multiple times until we succeed since sometimes the + * first try times out. + */ + tries = 0; + while (true) { + ret = tps65090_try_enable_fet(rdev); + if (!ret) + break; + if (ret != -ENOTRECOVERABLE || tries == MAX_FET_ENABLE_TRIES) + goto err; + + /* Try turning the FET off (and then on again) */ + ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, 0); + if (ret) + goto err; + + tries++; + } + + if (tries) + dev_warn(&rdev->dev, "reg %#x enable ok after %d tries\n", + rdev->desc->enable_reg, tries); + + return 0; +err: + dev_warn(&rdev->dev, "reg %#x enable failed\n", rdev->desc->enable_reg); + WARN_ON(1); + + return ret; +} + +static struct regulator_ops tps65090_reg_control_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; +static struct regulator_ops tps65090_fet_control_ops = { + .enable = tps65090_fet_enable, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, +}; + static struct regulator_ops tps65090_ldo_ops = { }; -#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops) \ +#define tps65090_REG_DESC(_id, _sname, _en_reg, _en_bits, _ops) \ { \ .name = "TPS65090_RAILS"#_id, \ .supply_name = _sname, \ .id = TPS65090_REGULATOR_##_id, \ .ops = &_ops, \ .enable_reg = _en_reg, \ - .enable_mask = BIT(0), \ + .enable_val = _en_bits, \ + .enable_mask = _en_bits, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ } static struct regulator_desc tps65090_regulator_desc[] = { - tps65090_REG_DESC(DCDC1, "vsys1", 0x0C, tps65090_reg_contol_ops), - tps65090_REG_DESC(DCDC2, "vsys2", 0x0D, tps65090_reg_contol_ops), - tps65090_REG_DESC(DCDC3, "vsys3", 0x0E, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET1, "infet1", 0x0F, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET2, "infet2", 0x10, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET3, "infet3", 0x11, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET4, "infet4", 0x12, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET5, "infet5", 0x13, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET6, "infet6", 0x14, tps65090_reg_contol_ops), - tps65090_REG_DESC(FET7, "infet7", 0x15, tps65090_reg_contol_ops), - tps65090_REG_DESC(LDO1, "vsys-l1", 0, tps65090_ldo_ops), - tps65090_REG_DESC(LDO2, "vsys-l2", 0, tps65090_ldo_ops), + tps65090_REG_DESC(DCDC1, "vsys1", 0x0C, BIT(CTRL_EN_BIT), + tps65090_reg_control_ops), + tps65090_REG_DESC(DCDC2, "vsys2", 0x0D, BIT(CTRL_EN_BIT), + tps65090_reg_control_ops), + tps65090_REG_DESC(DCDC3, "vsys3", 0x0E, BIT(CTRL_EN_BIT), + tps65090_reg_control_ops), + + tps65090_REG_DESC(FET1, "infet1", 0x0F, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET2, "infet2", 0x10, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET3, "infet3", 0x11, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET4, "infet4", 0x12, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET5, "infet5", 0x13, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET6, "infet6", 0x14, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + tps65090_REG_DESC(FET7, "infet7", 0x15, + BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT), + tps65090_fet_control_ops), + + tps65090_REG_DESC(LDO1, "vsys-l1", 0, 0, + tps65090_ldo_ops), + tps65090_REG_DESC(LDO2, "vsys-l2", 0, 0, + tps65090_ldo_ops), }; static inline bool is_dcdc(int id) From eba430c7eac10964e4ffd5df525bf2abc9e76b48 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 30 Apr 2014 10:40:41 +0200 Subject: [PATCH 6/9] regulator: s5m8767: Allow GPIO 0 to be used as external control GPIO 0 is a valid GPIO so allow using it as external control for regulator. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/regulator/s5m8767.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c index 5daa06626f16..c79af943a5c0 100644 --- a/drivers/regulator/s5m8767.c +++ b/drivers/regulator/s5m8767.c @@ -528,16 +528,6 @@ static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev, return 0; } -static void s5m8767_pmic_dt_parse_ext_control_gpio(struct sec_pmic_dev *iodev, - struct sec_regulator_data *rdata, - struct device_node *reg_np) -{ - rdata->ext_control_gpio = of_get_named_gpio(reg_np, - "s5m8767,pmic-ext-control-gpios", 0); - if (!gpio_is_valid(rdata->ext_control_gpio)) - rdata->ext_control_gpio = 0; -} - static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev, struct sec_platform_data *pdata) { @@ -586,7 +576,8 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev, continue; } - s5m8767_pmic_dt_parse_ext_control_gpio(iodev, rdata, reg_np); + rdata->ext_control_gpio = of_get_named_gpio(reg_np, + "s5m8767,pmic-ext-control-gpios", 0); rdata->id = i; rdata->initdata = of_get_regulator_init_data( @@ -959,8 +950,9 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) config.driver_data = s5m8767; config.regmap = iodev->regmap_pmic; config.of_node = pdata->regulators[i].reg_node; - config.ena_gpio = config.ena_gpio_flags = 0; - if (pdata->regulators[i].ext_control_gpio) + config.ena_gpio = -EINVAL; + config.ena_gpio_flags = 0; + if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) s5m8767_regulator_config_ext_control(s5m8767, &pdata->regulators[i], &config); @@ -973,7 +965,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) return ret; } - if (pdata->regulators[i].ext_control_gpio) { + if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) { ret = s5m8767_enable_ext_control(s5m8767, rdev); if (ret < 0) { dev_err(s5m8767->dev, From c122c5b68273cf0153d1dc510889728cf71e8ce3 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Thu, 1 May 2014 11:50:16 -0700 Subject: [PATCH 7/9] regulator: tps65090: Fix tps65090 crash on Tegra Dalmore The patch (60e91b5 regulator: tps65090: Allow setting the overcurrent wait time) introduced a crash on Tegra Dalmore. On Dalmore the device tree doesn't have an entry for all of the FETs so it leaves tps_pdata NULL in some cases. Add a check for NULL like the rest of the code does. Reported-by: Olof Johansson Signed-off-by: Doug Anderson Tested-by: Stephen Warren Signed-off-by: Mark Brown --- drivers/regulator/tps65090-regulator.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c index 2057e2e311de..2064b3fd45f7 100644 --- a/drivers/regulator/tps65090-regulator.c +++ b/drivers/regulator/tps65090-regulator.c @@ -431,8 +431,11 @@ static int tps65090_regulator_probe(struct platform_device *pdev) ri = &pmic[num]; ri->dev = &pdev->dev; ri->desc = &tps65090_regulator_desc[num]; - ri->overcurrent_wait_valid = tps_pdata->overcurrent_wait_valid; - ri->overcurrent_wait = tps_pdata->overcurrent_wait; + if (tps_pdata) { + ri->overcurrent_wait_valid = + tps_pdata->overcurrent_wait_valid; + ri->overcurrent_wait = tps_pdata->overcurrent_wait; + } /* * TPS5090 DCDC support the control from external digital input. From 5ab9be4274a12ef56fbf8cd965516f7d1f7868c6 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 22 May 2014 09:26:47 +0800 Subject: [PATCH 8/9] regulator: tps65218: Convert to use regulator_set_voltage_time_sel Use regulator_set_voltage_time_sel() instead of open-coded. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/tps65218-regulator.c | 37 +++++++------------------- 1 file changed, 10 insertions(+), 27 deletions(-) diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c index cec72fa71d1d..69b4b7750410 100644 --- a/drivers/regulator/tps65218-regulator.c +++ b/drivers/regulator/tps65218-regulator.c @@ -27,12 +27,10 @@ #include #include -static unsigned int tps65218_ramp_delay = 4000; - enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \ - _lr, _nlr) \ + _lr, _nlr, _delay) \ { \ .name = _name, \ .id = _id, \ @@ -47,6 +45,7 @@ enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; .volt_table = _t, \ .linear_ranges = _lr, \ .n_linear_ranges = _nlr, \ + .ramp_delay = _delay, \ } \ #define TPS65218_INFO(_id, _nm, _min, _max) \ @@ -152,22 +151,6 @@ static int tps65218_pmic_disable(struct regulator_dev *dev) dev->desc->enable_mask, TPS65218_PROTECT_L1); } -static int tps65218_set_voltage_time_sel(struct regulator_dev *rdev, - unsigned int old_selector, unsigned int new_selector) -{ - int old_uv, new_uv; - - old_uv = regulator_list_voltage_linear_range(rdev, old_selector); - if (old_uv < 0) - return old_uv; - - new_uv = regulator_list_voltage_linear_range(rdev, new_selector); - if (new_uv < 0) - return new_uv; - - return DIV_ROUND_UP(abs(old_uv - new_uv), tps65218_ramp_delay); -} - /* Operations permitted on DCDC1, DCDC2 */ static struct regulator_ops tps65218_dcdc12_ops = { .is_enabled = regulator_is_enabled_regmap, @@ -177,7 +160,7 @@ static struct regulator_ops tps65218_dcdc12_ops = { .set_voltage_sel = tps65218_pmic_set_voltage_sel, .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, - .set_voltage_time_sel = tps65218_set_voltage_time_sel, + .set_voltage_time_sel = regulator_set_voltage_time_sel, }; /* Operations permitted on DCDC3, DCDC4 and LDO1 */ @@ -203,33 +186,33 @@ static const struct regulator_desc regulators[] = { TPS65218_REG_CONTROL_DCDC1, TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL, - dcdc1_dcdc2_ranges, 2), + dcdc1_dcdc2_ranges, 2, 4000), TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64, TPS65218_REG_CONTROL_DCDC2, TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL, - dcdc1_dcdc2_ranges, 2), + dcdc1_dcdc2_ranges, 2, 4000), TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops, 64, TPS65218_REG_CONTROL_DCDC3, TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC3_EN, NULL, - ldo1_dcdc3_ranges, 2), + ldo1_dcdc3_ranges, 2, 0), TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops, 53, TPS65218_REG_CONTROL_DCDC4, TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL, - dcdc4_ranges, 2), + dcdc4_ranges, 2, 0), TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, 1, -1, -1, TPS65218_REG_ENABLE1, - TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0), + TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0, 0), TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops, 1, -1, -1, TPS65218_REG_ENABLE1, - TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0), + TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0, 0), TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64, TPS65218_REG_CONTROL_DCDC4, TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LDO1_EN, NULL, ldo1_dcdc3_ranges, - 2), + 2, 0), }; static int tps65218_regulator_probe(struct platform_device *pdev) From d660e92a97aac08aa33cd41e00a325066e00f1ef Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 27 May 2014 17:37:29 +0530 Subject: [PATCH 9/9] regulators: Add definition of regulator_set_voltage_time() for !CONFIG_REGULATOR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We already have dummy implementation for most of the regulators APIs for !CONFIG_REGULATOR case and were missing it for regulator_set_voltage_time(). Found this issue while compiling cpufreq-cpu0 driver without regulators support in kernel. drivers/cpufreq/cpufreq-cpu0.c: In function ‘cpu0_cpufreq_probe’: drivers/cpufreq/cpufreq-cpu0.c:186:3: error: implicit declaration of function ‘regulator_set_voltage_time’ [-Werror=implicit-function-declaration] Fix this by adding dummy definition for regulator_set_voltage_time(). Signed-off-by: Viresh Kumar Signed-off-by: Mark Brown --- include/linux/regulator/consumer.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index e530681bea70..94719e8dce04 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -397,6 +397,12 @@ static inline int regulator_set_voltage(struct regulator *regulator, return 0; } +static inline int regulator_set_voltage_time(struct regulator *regulator, + int old_uV, int new_uV) +{ + return 0; +} + static inline int regulator_get_voltage(struct regulator *regulator) { return -EINVAL;