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git://git.openwrt.org/openwrt/openwrt.git
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280 lines
9.3 KiB
Diff
280 lines
9.3 KiB
Diff
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From f95b73ba272eac5495e69e12795d5ea8bc81d2cd Mon Sep 17 00:00:00 2001
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From: Boris BREZILLON <boris.brezillon@free-electrons.com>
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Date: Fri, 10 Apr 2015 12:09:03 +0800
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Subject: [PATCH] regulator: axp20x: Prepare support for multiple AXP chip
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families
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Rework the AXP20X_ macros and probe function to support the several chip
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families, so that each family can define it's own set of regulators.
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Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
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[wens@csie.org: Support different DC-DC work frequency ranges]
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Signed-off-by: Chen-Yu Tsai <wens@csie.org>
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Reviewed-by: Mark Brown <broonie@kernel.org>
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Signed-off-by: Lee Jones <lee.jones@linaro.org>
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---
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drivers/regulator/axp20x-regulator.c | 143 +++++++++++++++++++++++------------
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1 file changed, 94 insertions(+), 49 deletions(-)
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diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
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index e4331f5..50ae0b5 100644
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--- a/drivers/regulator/axp20x-regulator.c
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+++ b/drivers/regulator/axp20x-regulator.c
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@@ -32,15 +32,15 @@
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#define AXP20X_FREQ_DCDC_MASK 0x0f
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-#define AXP20X_DESC_IO(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \
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- _ereg, _emask, _enable_val, _disable_val) \
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- [AXP20X_##_id] = { \
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+#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
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+ _vmask, _ereg, _emask, _enable_val, _disable_val) \
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+ [_family##_##_id] = { \
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.name = #_id, \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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- .id = AXP20X_##_id, \
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+ .id = _family##_##_id, \
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.n_voltages = (((_max) - (_min)) / (_step) + 1), \
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.owner = THIS_MODULE, \
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.min_uV = (_min) * 1000, \
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@@ -54,15 +54,15 @@
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.ops = &axp20x_ops, \
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}
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-#define AXP20X_DESC(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \
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- _ereg, _emask) \
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- [AXP20X_##_id] = { \
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+#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
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+ _vmask, _ereg, _emask) \
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+ [_family##_##_id] = { \
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.name = #_id, \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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- .id = AXP20X_##_id, \
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+ .id = _family##_##_id, \
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.n_voltages = (((_max) - (_min)) / (_step) + 1), \
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.owner = THIS_MODULE, \
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.min_uV = (_min) * 1000, \
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@@ -74,29 +74,29 @@
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.ops = &axp20x_ops, \
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}
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-#define AXP20X_DESC_FIXED(_id, _match, _supply, _volt) \
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- [AXP20X_##_id] = { \
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+#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
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+ [_family##_##_id] = { \
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.name = #_id, \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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- .id = AXP20X_##_id, \
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+ .id = _family##_##_id, \
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.n_voltages = 1, \
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.owner = THIS_MODULE, \
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.min_uV = (_volt) * 1000, \
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.ops = &axp20x_ops_fixed \
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}
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-#define AXP20X_DESC_TABLE(_id, _match, _supply, _table, _vreg, _vmask, _ereg, \
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- _emask) \
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- [AXP20X_##_id] = { \
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+#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask, \
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+ _ereg, _emask) \
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+ [_family##_##_id] = { \
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.name = #_id, \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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- .id = AXP20X_##_id, \
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+ .id = _family##_##_id, \
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.n_voltages = ARRAY_SIZE(_table), \
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.owner = THIS_MODULE, \
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.vsel_reg = (_vreg), \
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@@ -136,37 +136,57 @@ static struct regulator_ops axp20x_ops = {
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};
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static const struct regulator_desc axp20x_regulators[] = {
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- AXP20X_DESC(DCDC2, "dcdc2", "vin2", 700, 2275, 25, AXP20X_DCDC2_V_OUT,
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- 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
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- AXP20X_DESC(DCDC3, "dcdc3", "vin3", 700, 3500, 25, AXP20X_DCDC3_V_OUT,
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- 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
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- AXP20X_DESC_FIXED(LDO1, "ldo1", "acin", 1300),
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- AXP20X_DESC(LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
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- AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
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- AXP20X_DESC(LDO3, "ldo3", "ldo3in", 700, 3500, 25, AXP20X_LDO3_V_OUT,
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- 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
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- AXP20X_DESC_TABLE(LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
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- AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
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- AXP20X_DESC_IO(LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
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- AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
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- AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
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+ AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
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+ AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
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+ AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
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+ AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
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+ AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
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+ AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
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+ AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
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+ AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
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+ AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
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+ AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
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+ AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
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+ AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
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+ AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
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+ AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
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};
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static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
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{
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struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
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+ u32 min, max, def, step;
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+
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+ switch (axp20x->variant) {
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+ case AXP202_ID:
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+ case AXP209_ID:
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+ min = 750;
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+ max = 1875;
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+ def = 1500;
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+ step = 75;
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+ break;
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+ default:
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+ dev_err(&pdev->dev,
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+ "Setting DCDC frequency for unsupported AXP variant\n");
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+ return -EINVAL;
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+ }
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+
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+ if (dcdcfreq == 0)
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+ dcdcfreq = def;
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- if (dcdcfreq < 750) {
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- dcdcfreq = 750;
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- dev_warn(&pdev->dev, "DCDC frequency too low. Set to 750kHz\n");
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+ if (dcdcfreq < min) {
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+ dcdcfreq = min;
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+ dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
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+ min);
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}
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- if (dcdcfreq > 1875) {
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- dcdcfreq = 1875;
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- dev_warn(&pdev->dev, "DCDC frequency too high. Set to 1875kHz\n");
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+ if (dcdcfreq > max) {
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+ dcdcfreq = max;
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+ dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
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+ max);
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}
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- dcdcfreq = (dcdcfreq - 750) / 75;
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+ dcdcfreq = (dcdcfreq - min) / step;
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return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
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AXP20X_FREQ_DCDC_MASK, dcdcfreq);
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@@ -176,7 +196,7 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
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{
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struct device_node *np, *regulators;
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int ret;
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- u32 dcdcfreq;
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+ u32 dcdcfreq = 0;
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np = of_node_get(pdev->dev.parent->of_node);
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if (!np)
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@@ -186,7 +206,6 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
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if (!regulators) {
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dev_warn(&pdev->dev, "regulators node not found\n");
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} else {
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- dcdcfreq = 1500;
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of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
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ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
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if (ret < 0) {
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@@ -202,15 +221,27 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
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static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
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{
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- unsigned int mask = AXP20X_WORKMODE_DCDC2_MASK;
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+ struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
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+ unsigned int mask;
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- if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
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- return -EINVAL;
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+ switch (axp20x->variant) {
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+ case AXP202_ID:
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+ case AXP209_ID:
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+ if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
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+ return -EINVAL;
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+
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+ mask = AXP20X_WORKMODE_DCDC2_MASK;
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+ if (id == AXP20X_DCDC3)
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+ mask = AXP20X_WORKMODE_DCDC3_MASK;
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- if (id == AXP20X_DCDC3)
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- mask = AXP20X_WORKMODE_DCDC3_MASK;
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+ workmode <<= ffs(mask) - 1;
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+ break;
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- workmode <<= ffs(mask) - 1;
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+ default:
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+ /* should not happen */
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+ WARN_ON(1);
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+ return -EINVAL;
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+ }
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return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
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}
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@@ -219,22 +250,36 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
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{
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struct regulator_dev *rdev;
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struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
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+ const struct regulator_desc *regulators;
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struct regulator_config config = {
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.dev = pdev->dev.parent,
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.regmap = axp20x->regmap,
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+ .driver_data = axp20x,
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};
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- int ret, i;
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+ int ret, i, nregulators;
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u32 workmode;
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+ switch (axp20x->variant) {
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+ case AXP202_ID:
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+ case AXP209_ID:
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+ regulators = axp20x_regulators;
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+ nregulators = AXP20X_REG_ID_MAX;
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+ break;
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+ default:
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+ dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
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+ axp20x->variant);
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+ return -EINVAL;
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+ }
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+
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/* This only sets the dcdc freq. Ignore any errors */
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axp20x_regulator_parse_dt(pdev);
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- for (i = 0; i < AXP20X_REG_ID_MAX; i++) {
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- rdev = devm_regulator_register(&pdev->dev, &axp20x_regulators[i],
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+ for (i = 0; i < nregulators; i++) {
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+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
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&config);
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if (IS_ERR(rdev)) {
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dev_err(&pdev->dev, "Failed to register %s\n",
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- axp20x_regulators[i].name);
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+ regulators[i].name);
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return PTR_ERR(rdev);
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}
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@@ -245,7 +290,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
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if (!ret) {
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if (axp20x_set_dcdc_workmode(rdev, i, workmode))
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dev_err(&pdev->dev, "Failed to set workmode on %s\n",
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- axp20x_regulators[i].name);
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+ rdev->desc->name);
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}
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}
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