From f95b73ba272eac5495e69e12795d5ea8bc81d2cd Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Fri, 10 Apr 2015 12:09:03 +0800 Subject: [PATCH] regulator: axp20x: Prepare support for multiple AXP chip families Rework the AXP20X_ macros and probe function to support the several chip families, so that each family can define it's own set of regulators. Signed-off-by: Boris BREZILLON [wens@csie.org: Support different DC-DC work frequency ranges] Signed-off-by: Chen-Yu Tsai Reviewed-by: Mark Brown Signed-off-by: Lee Jones --- drivers/regulator/axp20x-regulator.c | 143 +++++++++++++++++++++++------------ 1 file changed, 94 insertions(+), 49 deletions(-) --- a/drivers/regulator/axp20x-regulator.c +++ b/drivers/regulator/axp20x-regulator.c @@ -32,15 +32,15 @@ #define AXP20X_FREQ_DCDC_MASK 0x0f -#define AXP20X_DESC_IO(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \ - _ereg, _emask, _enable_val, _disable_val) \ - [AXP20X_##_id] = { \ +#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \ + _vmask, _ereg, _emask, _enable_val, _disable_val) \ + [_family##_##_id] = { \ .name = #_id, \ .supply_name = (_supply), \ .of_match = of_match_ptr(_match), \ .regulators_node = of_match_ptr("regulators"), \ .type = REGULATOR_VOLTAGE, \ - .id = AXP20X_##_id, \ + .id = _family##_##_id, \ .n_voltages = (((_max) - (_min)) / (_step) + 1), \ .owner = THIS_MODULE, \ .min_uV = (_min) * 1000, \ @@ -54,15 +54,15 @@ .ops = &axp20x_ops, \ } -#define AXP20X_DESC(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \ - _ereg, _emask) \ - [AXP20X_##_id] = { \ +#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \ + _vmask, _ereg, _emask) \ + [_family##_##_id] = { \ .name = #_id, \ .supply_name = (_supply), \ .of_match = of_match_ptr(_match), \ .regulators_node = of_match_ptr("regulators"), \ .type = REGULATOR_VOLTAGE, \ - .id = AXP20X_##_id, \ + .id = _family##_##_id, \ .n_voltages = (((_max) - (_min)) / (_step) + 1), \ .owner = THIS_MODULE, \ .min_uV = (_min) * 1000, \ @@ -74,29 +74,29 @@ .ops = &axp20x_ops, \ } -#define AXP20X_DESC_FIXED(_id, _match, _supply, _volt) \ - [AXP20X_##_id] = { \ +#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \ + [_family##_##_id] = { \ .name = #_id, \ .supply_name = (_supply), \ .of_match = of_match_ptr(_match), \ .regulators_node = of_match_ptr("regulators"), \ .type = REGULATOR_VOLTAGE, \ - .id = AXP20X_##_id, \ + .id = _family##_##_id, \ .n_voltages = 1, \ .owner = THIS_MODULE, \ .min_uV = (_volt) * 1000, \ .ops = &axp20x_ops_fixed \ } -#define AXP20X_DESC_TABLE(_id, _match, _supply, _table, _vreg, _vmask, _ereg, \ - _emask) \ - [AXP20X_##_id] = { \ +#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask, \ + _ereg, _emask) \ + [_family##_##_id] = { \ .name = #_id, \ .supply_name = (_supply), \ .of_match = of_match_ptr(_match), \ .regulators_node = of_match_ptr("regulators"), \ .type = REGULATOR_VOLTAGE, \ - .id = AXP20X_##_id, \ + .id = _family##_##_id, \ .n_voltages = ARRAY_SIZE(_table), \ .owner = THIS_MODULE, \ .vsel_reg = (_vreg), \ @@ -136,37 +136,57 @@ static struct regulator_ops axp20x_ops = }; static const struct regulator_desc axp20x_regulators[] = { - AXP20X_DESC(DCDC2, "dcdc2", "vin2", 700, 2275, 25, AXP20X_DCDC2_V_OUT, - 0x3f, AXP20X_PWR_OUT_CTRL, 0x10), - AXP20X_DESC(DCDC3, "dcdc3", "vin3", 700, 3500, 25, AXP20X_DCDC3_V_OUT, - 0x7f, AXP20X_PWR_OUT_CTRL, 0x02), - AXP20X_DESC_FIXED(LDO1, "ldo1", "acin", 1300), - AXP20X_DESC(LDO2, "ldo2", "ldo24in", 1800, 3300, 100, - AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04), - AXP20X_DESC(LDO3, "ldo3", "ldo3in", 700, 3500, 25, AXP20X_LDO3_V_OUT, - 0x7f, AXP20X_PWR_OUT_CTRL, 0x40), - AXP20X_DESC_TABLE(LDO4, "ldo4", "ldo24in", axp20x_ldo4_data, - AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08), - AXP20X_DESC_IO(LDO5, "ldo5", "ldo5in", 1800, 3300, 100, - AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07, - AXP20X_IO_ENABLED, AXP20X_IO_DISABLED), + AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25, + AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10), + AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25, + AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02), + AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300), + AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100, + AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04), + AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25, + AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40), + AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data, + AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08), + AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100, + AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07, + AXP20X_IO_ENABLED, AXP20X_IO_DISABLED), }; static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq) { struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); + u32 min, max, def, step; - if (dcdcfreq < 750) { - dcdcfreq = 750; - dev_warn(&pdev->dev, "DCDC frequency too low. Set to 750kHz\n"); + switch (axp20x->variant) { + case AXP202_ID: + case AXP209_ID: + min = 750; + max = 1875; + def = 1500; + step = 75; + break; + default: + dev_err(&pdev->dev, + "Setting DCDC frequency for unsupported AXP variant\n"); + return -EINVAL; } - if (dcdcfreq > 1875) { - dcdcfreq = 1875; - dev_warn(&pdev->dev, "DCDC frequency too high. Set to 1875kHz\n"); + if (dcdcfreq == 0) + dcdcfreq = def; + + if (dcdcfreq < min) { + dcdcfreq = min; + dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n", + min); } - dcdcfreq = (dcdcfreq - 750) / 75; + if (dcdcfreq > max) { + dcdcfreq = max; + dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n", + max); + } + + dcdcfreq = (dcdcfreq - min) / step; return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ, AXP20X_FREQ_DCDC_MASK, dcdcfreq); @@ -176,7 +196,7 @@ static int axp20x_regulator_parse_dt(str { struct device_node *np, *regulators; int ret; - u32 dcdcfreq; + u32 dcdcfreq = 0; np = of_node_get(pdev->dev.parent->of_node); if (!np) @@ -186,7 +206,6 @@ static int axp20x_regulator_parse_dt(str if (!regulators) { dev_warn(&pdev->dev, "regulators node not found\n"); } else { - dcdcfreq = 1500; of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq); ret = axp20x_set_dcdc_freq(pdev, dcdcfreq); if (ret < 0) { @@ -202,15 +221,27 @@ static int axp20x_regulator_parse_dt(str static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode) { - unsigned int mask = AXP20X_WORKMODE_DCDC2_MASK; + struct axp20x_dev *axp20x = rdev_get_drvdata(rdev); + unsigned int mask; - if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3)) + switch (axp20x->variant) { + case AXP202_ID: + case AXP209_ID: + if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3)) + return -EINVAL; + + mask = AXP20X_WORKMODE_DCDC2_MASK; + if (id == AXP20X_DCDC3) + mask = AXP20X_WORKMODE_DCDC3_MASK; + + workmode <<= ffs(mask) - 1; + break; + + default: + /* should not happen */ + WARN_ON(1); return -EINVAL; - - if (id == AXP20X_DCDC3) - mask = AXP20X_WORKMODE_DCDC3_MASK; - - workmode <<= ffs(mask) - 1; + } return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode); } @@ -219,22 +250,36 @@ static int axp20x_regulator_probe(struct { struct regulator_dev *rdev; struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); + const struct regulator_desc *regulators; struct regulator_config config = { .dev = pdev->dev.parent, .regmap = axp20x->regmap, + .driver_data = axp20x, }; - int ret, i; + int ret, i, nregulators; u32 workmode; + switch (axp20x->variant) { + case AXP202_ID: + case AXP209_ID: + regulators = axp20x_regulators; + nregulators = AXP20X_REG_ID_MAX; + break; + default: + dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n", + axp20x->variant); + return -EINVAL; + } + /* This only sets the dcdc freq. Ignore any errors */ axp20x_regulator_parse_dt(pdev); - for (i = 0; i < AXP20X_REG_ID_MAX; i++) { - rdev = devm_regulator_register(&pdev->dev, &axp20x_regulators[i], + for (i = 0; i < nregulators; i++) { + rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "Failed to register %s\n", - axp20x_regulators[i].name); + regulators[i].name); return PTR_ERR(rdev); } @@ -245,7 +290,7 @@ static int axp20x_regulator_probe(struct if (!ret) { if (axp20x_set_dcdc_workmode(rdev, i, workmode)) dev_err(&pdev->dev, "Failed to set workmode on %s\n", - axp20x_regulators[i].name); + rdev->desc->name); } }