diff options
Diffstat (limited to 'target/linux/at91/patches-5.10/125-regulator-mcp16502-add-support-for-ramp-delay.patch')
| -rw-r--r-- | target/linux/at91/patches-5.10/125-regulator-mcp16502-add-support-for-ramp-delay.patch | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/target/linux/at91/patches-5.10/125-regulator-mcp16502-add-support-for-ramp-delay.patch b/target/linux/at91/patches-5.10/125-regulator-mcp16502-add-support-for-ramp-delay.patch deleted file mode 100644 index c91dd4a18b..0000000000 --- a/target/linux/at91/patches-5.10/125-regulator-mcp16502-add-support-for-ramp-delay.patch +++ /dev/null @@ -1,141 +0,0 @@ -From 7f13433e11a3c88f1fd6417c4c5e5a6c98370b9a Mon Sep 17 00:00:00 2001 -From: Claudiu Beznea <claudiu.beznea@microchip.com> -Date: Fri, 13 Nov 2020 17:21:09 +0200 -Subject: [PATCH 125/247] regulator: mcp16502: add support for ramp delay - -MCP16502 have configurable ramp delay support (via DVSR bits in -regulators' CFG register). - -Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> -Link: https://lore.kernel.org/r/1605280870-32432-6-git-send-email-claudiu.beznea@microchip.com -Signed-off-by: Mark Brown <broonie@kernel.org> ---- - drivers/regulator/mcp16502.c | 89 +++++++++++++++++++++++++++++++++++- - 1 file changed, 87 insertions(+), 2 deletions(-) - ---- a/drivers/regulator/mcp16502.c -+++ b/drivers/regulator/mcp16502.c -@@ -22,8 +22,9 @@ - #define VDD_LOW_SEL 0x0D - #define VDD_HIGH_SEL 0x3F - --#define MCP16502_FLT BIT(7) --#define MCP16502_ENS BIT(0) -+#define MCP16502_FLT BIT(7) -+#define MCP16502_DVSR GENMASK(3, 2) -+#define MCP16502_ENS BIT(0) - - /* - * The PMIC has four sets of registers corresponding to four power modes: -@@ -88,6 +89,12 @@ enum mcp16502_reg { - MCP16502_REG_CFG, - }; - -+/* Ramp delay (uV/us) for buck1, ldo1, ldo2. */ -+static const int mcp16502_ramp_b1l12[] = { 6250, 3125, 2083, 1563 }; -+ -+/* Ramp delay (uV/us) for buck2, buck3, buck4. */ -+static const int mcp16502_ramp_b234[] = { 3125, 1563, 1042, 781 }; -+ - static unsigned int mcp16502_of_map_mode(unsigned int mode) - { - if (mode == REGULATOR_MODE_NORMAL || mode == REGULATOR_MODE_IDLE) -@@ -271,6 +278,80 @@ static int mcp16502_get_status(struct re - return REGULATOR_STATUS_UNDEFINED; - } - -+static int mcp16502_set_voltage_time_sel(struct regulator_dev *rdev, -+ unsigned int old_sel, -+ unsigned int new_sel) -+{ -+ static const u8 us_ramp[] = { 8, 16, 24, 32 }; -+ int id = rdev_get_id(rdev); -+ unsigned int uV_delta, val; -+ int ret; -+ -+ ret = regmap_read(rdev->regmap, MCP16502_REG_BASE(id, CFG), &val); -+ if (ret) -+ return ret; -+ -+ val = (val & MCP16502_DVSR) >> 2; -+ uV_delta = abs(new_sel * rdev->desc->linear_ranges->step - -+ old_sel * rdev->desc->linear_ranges->step); -+ switch (id) { -+ case BUCK1: -+ case LDO1: -+ case LDO2: -+ ret = DIV_ROUND_CLOSEST(uV_delta * us_ramp[val], -+ mcp16502_ramp_b1l12[val]); -+ break; -+ -+ case BUCK2: -+ case BUCK3: -+ case BUCK4: -+ ret = DIV_ROUND_CLOSEST(uV_delta * us_ramp[val], -+ mcp16502_ramp_b234[val]); -+ break; -+ -+ default: -+ return -EINVAL; -+ } -+ -+ return ret; -+} -+ -+static int mcp16502_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) -+{ -+ const int *ramp; -+ int id = rdev_get_id(rdev); -+ unsigned int i, size; -+ -+ switch (id) { -+ case BUCK1: -+ case LDO1: -+ case LDO2: -+ ramp = mcp16502_ramp_b1l12; -+ size = ARRAY_SIZE(mcp16502_ramp_b1l12); -+ break; -+ -+ case BUCK2: -+ case BUCK3: -+ case BUCK4: -+ ramp = mcp16502_ramp_b234; -+ size = ARRAY_SIZE(mcp16502_ramp_b234); -+ break; -+ -+ default: -+ return -EINVAL; -+ } -+ -+ for (i = 0; i < size; i++) { -+ if (ramp[i] == ramp_delay) -+ break; -+ } -+ if (i == size) -+ return -EINVAL; -+ -+ return regmap_update_bits(rdev->regmap, MCP16502_REG_BASE(id, CFG), -+ MCP16502_DVSR, (i << 2)); -+} -+ - #ifdef CONFIG_SUSPEND - /* - * mcp16502_suspend_get_target_reg() - get the reg of the target suspend PMIC -@@ -365,6 +446,8 @@ static const struct regulator_ops mcp165 - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .get_status = mcp16502_get_status, -+ .set_voltage_time_sel = mcp16502_set_voltage_time_sel, -+ .set_ramp_delay = mcp16502_set_ramp_delay, - - .set_mode = mcp16502_set_mode, - .get_mode = mcp16502_get_mode, -@@ -389,6 +472,8 @@ static const struct regulator_ops mcp165 - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .get_status = mcp16502_get_status, -+ .set_voltage_time_sel = mcp16502_set_voltage_time_sel, -+ .set_ramp_delay = mcp16502_set_ramp_delay, - - #ifdef CONFIG_SUSPEND - .set_suspend_voltage = mcp16502_set_suspend_voltage, |