From 3b0e8f128190982e2a8872e208723de09538e36b Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 3 Jan 2013 06:31:02 +0000 Subject: lp8788-buck: fix a parent deivce in _probe() The lp8788-buck is a platform driver of lp8788-mfd. The platform device is allocated when mfd_add_devices() is called in lp8788-mfd. On the other hand, 'lp->dev' is the i2c client device. Therefore, this 'platform_device' is a proper parent device in case of resource managed mem alloc, registering a regulator and device kernel message. Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-buck.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index aef3f2b0c5e..4916a55d4d6 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -503,7 +503,7 @@ static int lp8788_buck_probe(struct platform_device *pdev) struct regulator_dev *rdev; int ret; - buck = devm_kzalloc(lp->dev, sizeof(struct lp8788_buck), GFP_KERNEL); + buck = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_buck), GFP_KERNEL); if (!buck) return -ENOMEM; @@ -513,7 +513,7 @@ static int lp8788_buck_probe(struct platform_device *pdev) if (ret) return ret; - cfg.dev = lp->dev; + cfg.dev = pdev->dev.parent; cfg.init_data = lp->pdata ? lp->pdata->buck_data[id] : NULL; cfg.driver_data = buck; cfg.regmap = lp->regmap; @@ -521,7 +521,7 @@ static int lp8788_buck_probe(struct platform_device *pdev) rdev = regulator_register(&lp8788_buck_desc[id], &cfg); if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); - dev_err(lp->dev, "BUCK%d regulator register err = %d\n", + dev_err(&pdev->dev, "BUCK%d regulator register err = %d\n", id + 1, ret); return ret; } -- cgit v1.2.3 From 38d8f67cb6f6d40dd9473a972ec65b3d54a785dd Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 3 Jan 2013 06:31:57 +0000 Subject: lp8788-buck: fix a parent device on devm_gpio_request() Use 'platform_device' rather than i2c client device node. Arguments are added in lp8788_init_dvs() and lp8788_dvs_gpio_request(). Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-buck.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index 4916a55d4d6..98770e8b2e5 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -429,7 +429,8 @@ static struct regulator_desc lp8788_buck_desc[] = { }, }; -static int lp8788_dvs_gpio_request(struct lp8788_buck *buck, +static int lp8788_dvs_gpio_request(struct platform_device *pdev, + struct lp8788_buck *buck, enum lp8788_buck_id id) { struct lp8788_platform_data *pdata = buck->lp->pdata; @@ -440,7 +441,7 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck, switch (id) { case BUCK1: gpio = pdata->buck1_dvs->gpio; - ret = devm_gpio_request_one(buck->lp->dev, gpio, DVS_LOW, + ret = devm_gpio_request_one(&pdev->dev, gpio, DVS_LOW, b1_name); if (ret) return ret; @@ -450,7 +451,7 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck, case BUCK2: for (i = 0 ; i < LP8788_NUM_BUCK2_DVS ; i++) { gpio = pdata->buck2_dvs->gpio[i]; - ret = devm_gpio_request_one(buck->lp->dev, gpio, + ret = devm_gpio_request_one(&pdev->dev, gpio, DVS_LOW, b2_name[i]); if (ret) return ret; @@ -464,7 +465,8 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck, return 0; } -static int lp8788_init_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id) +static int lp8788_init_dvs(struct platform_device *pdev, + struct lp8788_buck *buck, enum lp8788_buck_id id) { struct lp8788_platform_data *pdata = buck->lp->pdata; u8 mask[] = { LP8788_BUCK1_DVS_SEL_M, LP8788_BUCK2_DVS_SEL_M }; @@ -483,7 +485,7 @@ static int lp8788_init_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id) (id == BUCK2 && !pdata->buck2_dvs)) goto set_default_dvs_mode; - if (lp8788_dvs_gpio_request(buck, id)) + if (lp8788_dvs_gpio_request(pdev, buck, id)) goto set_default_dvs_mode; return lp8788_update_bits(buck->lp, LP8788_BUCK_DVS_SEL, mask[id], @@ -509,7 +511,7 @@ static int lp8788_buck_probe(struct platform_device *pdev) buck->lp = lp; - ret = lp8788_init_dvs(buck, id); + ret = lp8788_init_dvs(pdev, buck, id); if (ret) return ret; -- cgit v1.2.3 From 1ef01e74e78ce445af168a18c6a196642e25e23b Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 3 Jan 2013 06:32:03 +0000 Subject: lp8788-buck: fix a for-loop coding style Remove space before semicolon in for-loop. Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-buck.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index 98770e8b2e5..11619493a5c 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -449,7 +449,7 @@ static int lp8788_dvs_gpio_request(struct platform_device *pdev, buck->dvs = pdata->buck1_dvs; break; case BUCK2: - for (i = 0 ; i < LP8788_NUM_BUCK2_DVS ; i++) { + for (i = 0; i < LP8788_NUM_BUCK2_DVS; i++) { gpio = pdata->buck2_dvs->gpio[i]; ret = devm_gpio_request_one(&pdev->dev, gpio, DVS_LOW, b2_name[i]); -- cgit v1.2.3 From 939e88f0909a4dd76cf75b9bda6ee905c04a162f Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 3 Jan 2013 06:32:11 +0000 Subject: lp8788-ldo: fix a parent device in _probe() The lp8788-ldo is a platform driver of lp8788-mfd. The platform device is allocated when mfd_add_devices() is called in lp8788-mfd. On the other hand, 'lp->dev' is the i2c client device. Therefore, this 'platform_device' is a proper parent device in case of resource managed mem alloc, registering regulators and device kernel messages. Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-ldo.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-ldo.c b/drivers/regulator/lp8788-ldo.c index 3792741708c..40403e9f83b 100644 --- a/drivers/regulator/lp8788-ldo.c +++ b/drivers/regulator/lp8788-ldo.c @@ -712,7 +712,7 @@ static int lp8788_dldo_probe(struct platform_device *pdev) struct regulator_dev *rdev; int ret; - ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); + ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); if (!ldo) return -ENOMEM; @@ -721,7 +721,7 @@ static int lp8788_dldo_probe(struct platform_device *pdev) if (ret) return ret; - cfg.dev = lp->dev; + cfg.dev = pdev->dev.parent; cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL; cfg.driver_data = ldo; cfg.regmap = lp->regmap; @@ -729,7 +729,7 @@ static int lp8788_dldo_probe(struct platform_device *pdev) rdev = regulator_register(&lp8788_dldo_desc[id], &cfg); if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); - dev_err(lp->dev, "DLDO%d regulator register err = %d\n", + dev_err(&pdev->dev, "DLDO%d regulator register err = %d\n", id + 1, ret); return ret; } @@ -768,7 +768,7 @@ static int lp8788_aldo_probe(struct platform_device *pdev) struct regulator_dev *rdev; int ret; - ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); + ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); if (!ldo) return -ENOMEM; @@ -777,7 +777,7 @@ static int lp8788_aldo_probe(struct platform_device *pdev) if (ret) return ret; - cfg.dev = lp->dev; + cfg.dev = pdev->dev.parent; cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL; cfg.driver_data = ldo; cfg.regmap = lp->regmap; @@ -785,7 +785,7 @@ static int lp8788_aldo_probe(struct platform_device *pdev) rdev = regulator_register(&lp8788_aldo_desc[id], &cfg); if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); - dev_err(lp->dev, "ALDO%d regulator register err = %d\n", + dev_err(&pdev->dev, "ALDO%d regulator register err = %d\n", id + 1, ret); return ret; } -- cgit v1.2.3 From f02a3917b3bc65149cc077396896f2ae5a2fbe4a Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 3 Jan 2013 06:32:26 +0000 Subject: lp8788-ldo: fix a parent device on devm_gpio_request() Use 'platform_device' rather than i2c client device node. Argument is added in lp8788_config_ldo_enable_mode(). Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-ldo.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-ldo.c b/drivers/regulator/lp8788-ldo.c index 40403e9f83b..416bb6088ab 100644 --- a/drivers/regulator/lp8788-ldo.c +++ b/drivers/regulator/lp8788-ldo.c @@ -616,10 +616,11 @@ static struct regulator_desc lp8788_aldo_desc[] = { }, }; -static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo, +static int lp8788_gpio_request_ldo_en(struct platform_device *pdev, + struct lp8788_ldo *ldo, enum lp8788_ext_ldo_en_id id) { - struct device *dev = ldo->lp->dev; + struct device *dev = &pdev->dev; struct lp8788_ldo_enable_pin *pin = ldo->en_pin; int ret, gpio, pinstate; char *name[] = { @@ -647,7 +648,8 @@ static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo, return ret; } -static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo, +static int lp8788_config_ldo_enable_mode(struct platform_device *pdev, + struct lp8788_ldo *ldo, enum lp8788_ldo_id id) { int ret; @@ -693,7 +695,7 @@ static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo, ldo->en_pin = pdata->ldo_pin[enable_id]; - ret = lp8788_gpio_request_ldo_en(ldo, enable_id); + ret = lp8788_gpio_request_ldo_en(pdev, ldo, enable_id); if (ret) goto set_default_ldo_enable_mode; @@ -717,7 +719,7 @@ static int lp8788_dldo_probe(struct platform_device *pdev) return -ENOMEM; ldo->lp = lp; - ret = lp8788_config_ldo_enable_mode(ldo, lp8788_dldo_id[id]); + ret = lp8788_config_ldo_enable_mode(pdev, ldo, lp8788_dldo_id[id]); if (ret) return ret; @@ -773,7 +775,7 @@ static int lp8788_aldo_probe(struct platform_device *pdev) return -ENOMEM; ldo->lp = lp; - ret = lp8788_config_ldo_enable_mode(ldo, lp8788_aldo_id[id]); + ret = lp8788_config_ldo_enable_mode(pdev, ldo, lp8788_aldo_id[id]); if (ret) return ret; -- cgit v1.2.3 From b9bb09111a4f5dbf8a0bd7df77ec79d3fdf9e5d2 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 5 Jan 2013 15:33:43 +0800 Subject: regulator: lp8788-ldo: Use ldo->en_pin to check if regulator is enabled by external pin ldo->en_pin is set iff the regulator is enabled by external pin. This patch sets ldo->en_pin to NULL if lp8788_gpio_request_ldo_en() fails, then we can use it to determinate if the regulator is controlled by external pin or register. lp8788_get_ldo_enable_mode(), lp8788_ldo_ctrl_by_extern_pin() and lp8788_ldo_is_enabled_by_extern_pin() functions are not used now, remove them. Signed-off-by: Axel Lin Acked-by: Milo Kim Tested-by: Milo Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-ldo.c | 107 ++++++----------------------------------- 1 file changed, 14 insertions(+), 93 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-ldo.c b/drivers/regulator/lp8788-ldo.c index 416bb6088ab..cd5a14ad926 100644 --- a/drivers/regulator/lp8788-ldo.c +++ b/drivers/regulator/lp8788-ldo.c @@ -88,11 +88,6 @@ #define ENABLE GPIOF_OUT_INIT_HIGH #define DISABLE GPIOF_OUT_INIT_LOW -enum lp8788_enable_mode { - REGISTER, - EXTPIN, -}; - enum lp8788_ldo_id { DLDO1, DLDO2, @@ -189,114 +184,38 @@ static enum lp8788_ldo_id lp8788_aldo_id[] = { ALDO10, }; -/* DLDO 7, 9 and 11, ALDO 1 ~ 5 and 7 - : can be enabled either by external pin or by i2c register */ -static enum lp8788_enable_mode -lp8788_get_ldo_enable_mode(struct lp8788_ldo *ldo, enum lp8788_ldo_id id) -{ - int ret; - u8 val, mask; - - ret = lp8788_read_byte(ldo->lp, LP8788_EN_SEL, &val); - if (ret) - return ret; - - switch (id) { - case DLDO7: - mask = LP8788_EN_SEL_DLDO7_M; - break; - case DLDO9: - case DLDO11: - mask = LP8788_EN_SEL_DLDO911_M; - break; - case ALDO1: - mask = LP8788_EN_SEL_ALDO1_M; - break; - case ALDO2 ... ALDO4: - mask = LP8788_EN_SEL_ALDO234_M; - break; - case ALDO5: - mask = LP8788_EN_SEL_ALDO5_M; - break; - case ALDO7: - mask = LP8788_EN_SEL_ALDO7_M; - break; - default: - return REGISTER; - } - - return val & mask ? EXTPIN : REGISTER; -} - -static int lp8788_ldo_ctrl_by_extern_pin(struct lp8788_ldo *ldo, int pinstate) -{ - struct lp8788_ldo_enable_pin *pin = ldo->en_pin; - - if (!pin) - return -EINVAL; - - if (gpio_is_valid(pin->gpio)) - gpio_set_value(pin->gpio, pinstate); - - return 0; -} - -static int lp8788_ldo_is_enabled_by_extern_pin(struct lp8788_ldo *ldo) -{ - struct lp8788_ldo_enable_pin *pin = ldo->en_pin; - - if (!pin) - return -EINVAL; - - return gpio_get_value(pin->gpio) ? 1 : 0; -} - static int lp8788_ldo_enable(struct regulator_dev *rdev) { struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); - enum lp8788_ldo_id id = rdev_get_id(rdev); - enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); - switch (mode) { - case EXTPIN: - return lp8788_ldo_ctrl_by_extern_pin(ldo, ENABLE); - case REGISTER: + if (ldo->en_pin) { + gpio_set_value(ldo->en_pin->gpio, ENABLE); + return 0; + } else { return regulator_enable_regmap(rdev); - default: - return -EINVAL; } } static int lp8788_ldo_disable(struct regulator_dev *rdev) { struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); - enum lp8788_ldo_id id = rdev_get_id(rdev); - enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); - switch (mode) { - case EXTPIN: - return lp8788_ldo_ctrl_by_extern_pin(ldo, DISABLE); - case REGISTER: + if (ldo->en_pin) { + gpio_set_value(ldo->en_pin->gpio, DISABLE); + return 0; + } else { return regulator_disable_regmap(rdev); - default: - return -EINVAL; } } static int lp8788_ldo_is_enabled(struct regulator_dev *rdev) { struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); - enum lp8788_ldo_id id = rdev_get_id(rdev); - enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); - switch (mode) { - case EXTPIN: - return lp8788_ldo_is_enabled_by_extern_pin(ldo); - case REGISTER: + if (ldo->en_pin) + return gpio_get_value(ldo->en_pin->gpio) ? 1 : 0; + else return regulator_is_enabled_regmap(rdev); - default: - return -EINVAL; - } } static int lp8788_ldo_enable_time(struct regulator_dev *rdev) @@ -696,8 +615,10 @@ static int lp8788_config_ldo_enable_mode(struct platform_device *pdev, ldo->en_pin = pdata->ldo_pin[enable_id]; ret = lp8788_gpio_request_ldo_en(pdev, ldo, enable_id); - if (ret) + if (ret) { + ldo->en_pin = NULL; goto set_default_ldo_enable_mode; + } return ret; -- cgit v1.2.3 From eb758de6a00f2c1f5694efc503b94d162db99734 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 10 Jan 2013 10:33:06 +0800 Subject: regulator: lp8788-buck: Silence build warning This driver use id as array index, thus add bounder checking for id. This patch fixes below build warning: drivers/regulator/lp8788-buck.c: In function 'lp8788_buck_probe': drivers/regulator/lp8788-buck.c:490:8: warning: array subscript is above array bounds [-Warray-bounds] drivers/regulator/lp8788-buck.c:489:63: warning: array subscript is above array bounds [-Warray-bounds] Reported-by: Fengguang Wu Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/lp8788-buck.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index 11619493a5c..ef845c7ac69 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -474,7 +474,7 @@ static int lp8788_init_dvs(struct platform_device *pdev, u8 default_dvs_mode[] = { LP8788_BUCK1_DVS_I2C, LP8788_BUCK2_DVS_I2C }; /* no dvs for buck3, 4 */ - if (id == BUCK3 || id == BUCK4) + if (id > BUCK2) return 0; /* no dvs platform data, then dvs will be selected by I2C registers */ @@ -505,6 +505,9 @@ static int lp8788_buck_probe(struct platform_device *pdev) struct regulator_dev *rdev; int ret; + if (id >= LP8788_NUM_BUCKS) + return -EINVAL; + buck = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_buck), GFP_KERNEL); if (!buck) return -ENOMEM; -- cgit v1.2.3 From e69995d3bfbdc8d30ae3548c69f669139791b739 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 17 Jan 2013 09:57:46 +0800 Subject: regulator: lp8788-buck: Remove buck[1|2]_vout_addr array The vout address for buck[1|2] can be easily calculated, thus remote these arrays. Signed-off-by: Axel Lin Acked-by: Milo Kim Signed-off-by: Mark Brown --- drivers/regulator/lp8788-buck.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/lp8788-buck.c b/drivers/regulator/lp8788-buck.c index ef845c7ac69..97891a7ea7b 100644 --- a/drivers/regulator/lp8788-buck.c +++ b/drivers/regulator/lp8788-buck.c @@ -103,16 +103,6 @@ static const int lp8788_buck_vtbl[] = { 1950000, 2000000, }; -static const u8 buck1_vout_addr[] = { - LP8788_BUCK1_VOUT0, LP8788_BUCK1_VOUT1, - LP8788_BUCK1_VOUT2, LP8788_BUCK1_VOUT3, -}; - -static const u8 buck2_vout_addr[] = { - LP8788_BUCK2_VOUT0, LP8788_BUCK2_VOUT1, - LP8788_BUCK2_VOUT2, LP8788_BUCK2_VOUT3, -}; - static void lp8788_buck1_set_dvs(struct lp8788_buck *buck) { struct lp8788_buck1_dvs *dvs = (struct lp8788_buck1_dvs *)buck->dvs; @@ -235,7 +225,7 @@ static u8 lp8788_select_buck_vout_addr(struct lp8788_buck *buck, lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val); idx = (val & LP8788_BUCK1_DVS_M) >> LP8788_BUCK1_DVS_S; } - addr = buck1_vout_addr[idx]; + addr = LP8788_BUCK1_VOUT0 + idx; break; case BUCK2: if (mode == EXTPIN) { @@ -258,7 +248,7 @@ static u8 lp8788_select_buck_vout_addr(struct lp8788_buck *buck, lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val); idx = (val & LP8788_BUCK2_DVS_M) >> LP8788_BUCK2_DVS_S; } - addr = buck2_vout_addr[idx]; + addr = LP8788_BUCK2_VOUT0 + idx; break; default: goto err; -- cgit v1.2.3