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path: root/drivers/power/regulator/rk8xx.c
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Diffstat (limited to 'drivers/power/regulator/rk8xx.c')
-rw-r--r--drivers/power/regulator/rk8xx.c353
1 files changed, 353 insertions, 0 deletions
diff --git a/drivers/power/regulator/rk8xx.c b/drivers/power/regulator/rk8xx.c
new file mode 100644
index 00000000000..e655c2d91f5
--- /dev/null
+++ b/drivers/power/regulator/rk8xx.c
@@ -0,0 +1,353 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
+ * Copyright (C) 2012 rockchips
+ * zyw <zyw@rock-chips.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <power/rk8xx_pmic.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+#ifndef CONFIG_SPL_BUILD
+#define ENABLE_DRIVER
+#endif
+
+/* Field Definitions */
+#define RK808_BUCK_VSEL_MASK 0x3f
+#define RK808_BUCK4_VSEL_MASK 0xf
+#define RK808_LDO_VSEL_MASK 0x1f
+
+#define RK818_BUCK_VSEL_MASK 0x3f
+#define RK818_BUCK4_VSEL_MASK 0x1f
+#define RK818_LDO_VSEL_MASK 0x1f
+#define RK818_LDO3_ON_VSEL_MASK 0xf
+#define RK818_BOOST_ON_VSEL_MASK 0xe0
+
+struct rk8xx_reg_info {
+ uint min_uv;
+ uint step_uv;
+ s8 vsel_reg;
+ u8 vsel_mask;
+};
+
+static const struct rk8xx_reg_info rk808_buck[] = {
+ { 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
+ { 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
+ { 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
+ { 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
+};
+
+static const struct rk8xx_reg_info rk808_ldo[] = {
+ { 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
+};
+
+static const struct rk8xx_reg_info rk818_buck[] = {
+ { 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
+ { 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
+ { 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
+ { 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
+};
+
+static const struct rk8xx_reg_info rk818_ldo[] = {
+ { 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
+ { 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
+};
+
+static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
+ int num)
+{
+ struct rk8xx_priv *priv = dev_get_priv(pmic);
+ switch (priv->variant) {
+ case RK818_ID:
+ return &rk818_buck[num];
+ default:
+ return &rk808_buck[num];
+ }
+}
+
+static const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
+ int num)
+{
+ struct rk8xx_priv *priv = dev_get_priv(pmic);
+ switch (priv->variant) {
+ case RK818_ID:
+ return &rk818_ldo[num - 1];
+ default:
+ return &rk808_ldo[num - 1];
+ }
+}
+
+static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
+{
+ const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
+ int mask = info->vsel_mask;
+ int val;
+
+ if (info->vsel_reg == -1)
+ return -ENOSYS;
+ val = (uvolt - info->min_uv) / info->step_uv;
+ debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
+ val);
+
+ return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
+}
+
+static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
+{
+ uint mask;
+ int ret;
+
+ buck--;
+ mask = 1 << buck;
+ if (enable) {
+ ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
+ if (ret)
+ return ret;
+ ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
+ if (ret)
+ return ret;
+ }
+
+ return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
+}
+
+#ifdef ENABLE_DRIVER
+static int buck_get_value(struct udevice *dev)
+{
+ int buck = dev->driver_data - 1;
+ const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
+ int mask = info->vsel_mask;
+ int ret, val;
+
+ if (info->vsel_reg == -1)
+ return -ENOSYS;
+ ret = pmic_reg_read(dev->parent, info->vsel_reg);
+ if (ret < 0)
+ return ret;
+ val = ret & mask;
+
+ return info->min_uv + val * info->step_uv;
+}
+
+static int buck_set_value(struct udevice *dev, int uvolt)
+{
+ int buck = dev->driver_data;
+
+ return _buck_set_value(dev->parent, buck, uvolt);
+}
+
+static int buck_set_enable(struct udevice *dev, bool enable)
+{
+ int buck = dev->driver_data;
+
+ return _buck_set_enable(dev->parent, buck, enable);
+}
+
+static bool buck_get_enable(struct udevice *dev)
+{
+ int buck = dev->driver_data - 1;
+ int ret;
+ uint mask;
+
+ mask = 1 << buck;
+
+ ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
+ if (ret < 0)
+ return ret;
+
+ return ret & mask ? true : false;
+}
+
+static int ldo_get_value(struct udevice *dev)
+{
+ int ldo = dev->driver_data - 1;
+ const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
+ int mask = info->vsel_mask;
+ int ret, val;
+
+ if (info->vsel_reg == -1)
+ return -ENOSYS;
+ ret = pmic_reg_read(dev->parent, info->vsel_reg);
+ if (ret < 0)
+ return ret;
+ val = ret & mask;
+
+ return info->min_uv + val * info->step_uv;
+}
+
+static int ldo_set_value(struct udevice *dev, int uvolt)
+{
+ int ldo = dev->driver_data - 1;
+ const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
+ int mask = info->vsel_mask;
+ int val;
+
+ if (info->vsel_reg == -1)
+ return -ENOSYS;
+ val = (uvolt - info->min_uv) / info->step_uv;
+ debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
+ val);
+
+ return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
+}
+
+static int ldo_set_enable(struct udevice *dev, bool enable)
+{
+ int ldo = dev->driver_data - 1;
+ uint mask;
+
+ mask = 1 << ldo;
+
+ return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
+ enable ? mask : 0);
+}
+
+static bool ldo_get_enable(struct udevice *dev)
+{
+ int ldo = dev->driver_data - 1;
+ int ret;
+ uint mask;
+
+ mask = 1 << ldo;
+
+ ret = pmic_reg_read(dev->parent, REG_LDO_EN);
+ if (ret < 0)
+ return ret;
+
+ return ret & mask ? true : false;
+}
+
+static int switch_set_enable(struct udevice *dev, bool enable)
+{
+ int sw = dev->driver_data - 1;
+ uint mask;
+
+ mask = 1 << (sw + 5);
+
+ return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
+ enable ? mask : 0);
+}
+
+static bool switch_get_enable(struct udevice *dev)
+{
+ int sw = dev->driver_data - 1;
+ int ret;
+ uint mask;
+
+ mask = 1 << (sw + 5);
+
+ ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
+ if (ret < 0)
+ return ret;
+
+ return ret & mask ? true : false;
+}
+
+static int rk8xx_buck_probe(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+
+ uc_pdata->type = REGULATOR_TYPE_BUCK;
+ uc_pdata->mode_count = 0;
+
+ return 0;
+}
+
+static int rk8xx_ldo_probe(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+
+ uc_pdata->type = REGULATOR_TYPE_LDO;
+ uc_pdata->mode_count = 0;
+
+ return 0;
+}
+
+static int rk8xx_switch_probe(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+
+ uc_pdata->type = REGULATOR_TYPE_FIXED;
+ uc_pdata->mode_count = 0;
+
+ return 0;
+}
+
+static const struct dm_regulator_ops rk8xx_buck_ops = {
+ .get_value = buck_get_value,
+ .set_value = buck_set_value,
+ .get_enable = buck_get_enable,
+ .set_enable = buck_set_enable,
+};
+
+static const struct dm_regulator_ops rk8xx_ldo_ops = {
+ .get_value = ldo_get_value,
+ .set_value = ldo_set_value,
+ .get_enable = ldo_get_enable,
+ .set_enable = ldo_set_enable,
+};
+
+static const struct dm_regulator_ops rk8xx_switch_ops = {
+ .get_enable = switch_get_enable,
+ .set_enable = switch_set_enable,
+};
+
+U_BOOT_DRIVER(rk8xx_buck) = {
+ .name = "rk8xx_buck",
+ .id = UCLASS_REGULATOR,
+ .ops = &rk8xx_buck_ops,
+ .probe = rk8xx_buck_probe,
+};
+
+U_BOOT_DRIVER(rk8xx_ldo) = {
+ .name = "rk8xx_ldo",
+ .id = UCLASS_REGULATOR,
+ .ops = &rk8xx_ldo_ops,
+ .probe = rk8xx_ldo_probe,
+};
+
+U_BOOT_DRIVER(rk8xx_switch) = {
+ .name = "rk8xx_switch",
+ .id = UCLASS_REGULATOR,
+ .ops = &rk8xx_switch_ops,
+ .probe = rk8xx_switch_probe,
+};
+#endif
+
+int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
+{
+ int ret;
+
+ ret = _buck_set_value(pmic, buck, uvolt);
+ if (ret)
+ return ret;
+
+ return _buck_set_enable(pmic, buck, true);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 03:30:58 +0000