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Diffstat (limited to 'drivers/mfd/palmas.c')
-rw-r--r--drivers/mfd/palmas.c160
1 files changed, 150 insertions, 10 deletions
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index e4d1c706df8..d280d789e55 100644
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -25,6 +25,52 @@
#include <linux/mfd/palmas.h>
#include <linux/of_device.h>
+#define PALMAS_EXT_REQ (PALMAS_EXT_CONTROL_ENABLE1 | \
+ PALMAS_EXT_CONTROL_ENABLE2 | \
+ PALMAS_EXT_CONTROL_NSLEEP)
+
+struct palmas_sleep_requestor_info {
+ int id;
+ int reg_offset;
+ int bit_pos;
+};
+
+#define EXTERNAL_REQUESTOR(_id, _offset, _pos) \
+ [PALMAS_EXTERNAL_REQSTR_ID_##_id] = { \
+ .id = PALMAS_EXTERNAL_REQSTR_ID_##_id, \
+ .reg_offset = _offset, \
+ .bit_pos = _pos, \
+ }
+
+static struct palmas_sleep_requestor_info sleep_req_info[] = {
+ EXTERNAL_REQUESTOR(REGEN1, 0, 0),
+ EXTERNAL_REQUESTOR(REGEN2, 0, 1),
+ EXTERNAL_REQUESTOR(SYSEN1, 0, 2),
+ EXTERNAL_REQUESTOR(SYSEN2, 0, 3),
+ EXTERNAL_REQUESTOR(CLK32KG, 0, 4),
+ EXTERNAL_REQUESTOR(CLK32KGAUDIO, 0, 5),
+ EXTERNAL_REQUESTOR(REGEN3, 0, 6),
+ EXTERNAL_REQUESTOR(SMPS12, 1, 0),
+ EXTERNAL_REQUESTOR(SMPS3, 1, 1),
+ EXTERNAL_REQUESTOR(SMPS45, 1, 2),
+ EXTERNAL_REQUESTOR(SMPS6, 1, 3),
+ EXTERNAL_REQUESTOR(SMPS7, 1, 4),
+ EXTERNAL_REQUESTOR(SMPS8, 1, 5),
+ EXTERNAL_REQUESTOR(SMPS9, 1, 6),
+ EXTERNAL_REQUESTOR(SMPS10, 1, 7),
+ EXTERNAL_REQUESTOR(LDO1, 2, 0),
+ EXTERNAL_REQUESTOR(LDO2, 2, 1),
+ EXTERNAL_REQUESTOR(LDO3, 2, 2),
+ EXTERNAL_REQUESTOR(LDO4, 2, 3),
+ EXTERNAL_REQUESTOR(LDO5, 2, 4),
+ EXTERNAL_REQUESTOR(LDO6, 2, 5),
+ EXTERNAL_REQUESTOR(LDO7, 2, 6),
+ EXTERNAL_REQUESTOR(LDO8, 2, 7),
+ EXTERNAL_REQUESTOR(LDO9, 3, 0),
+ EXTERNAL_REQUESTOR(LDOLN, 3, 1),
+ EXTERNAL_REQUESTOR(LDOUSB, 3, 2),
+};
+
static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
{
.reg_bits = 8,
@@ -186,6 +232,57 @@ static struct regmap_irq_chip palmas_irq_chip = {
PALMAS_INT1_MASK),
};
+int palmas_ext_control_req_config(struct palmas *palmas,
+ enum palmas_external_requestor_id id, int ext_ctrl, bool enable)
+{
+ int preq_mask_bit = 0;
+ int reg_add = 0;
+ int bit_pos;
+ int ret;
+
+ if (!(ext_ctrl & PALMAS_EXT_REQ))
+ return 0;
+
+ if (id >= PALMAS_EXTERNAL_REQSTR_ID_MAX)
+ return 0;
+
+ if (ext_ctrl & PALMAS_EXT_CONTROL_NSLEEP) {
+ reg_add = PALMAS_NSLEEP_RES_ASSIGN;
+ preq_mask_bit = 0;
+ } else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE1) {
+ reg_add = PALMAS_ENABLE1_RES_ASSIGN;
+ preq_mask_bit = 1;
+ } else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE2) {
+ reg_add = PALMAS_ENABLE2_RES_ASSIGN;
+ preq_mask_bit = 2;
+ }
+
+ bit_pos = sleep_req_info[id].bit_pos;
+ reg_add += sleep_req_info[id].reg_offset;
+ if (enable)
+ ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
+ reg_add, BIT(bit_pos), BIT(bit_pos));
+ else
+ ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
+ reg_add, BIT(bit_pos), 0);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
+ reg_add, ret);
+ return ret;
+ }
+
+ /* Unmask the PREQ */
+ ret = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE,
+ PALMAS_POWER_CTRL, BIT(preq_mask_bit), 0);
+ if (ret < 0) {
+ dev_err(palmas->dev, "POWER_CTRL register update failed %d\n",
+ ret);
+ return ret;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(palmas_ext_control_req_config);
+
static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
struct palmas_platform_data *pdata)
{
@@ -229,6 +326,32 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c,
PALMAS_POWER_CTRL_ENABLE2_MASK;
if (i2c->irq)
palmas_set_pdata_irq_flag(i2c, pdata);
+
+ pdata->pm_off = of_property_read_bool(node,
+ "ti,system-power-controller");
+}
+
+static struct palmas *palmas_dev;
+static void palmas_power_off(void)
+{
+ unsigned int addr;
+ int ret, slave;
+
+ if (!palmas_dev)
+ return;
+
+ slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
+ addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL);
+
+ ret = regmap_update_bits(
+ palmas_dev->regmap[slave],
+ addr,
+ PALMAS_DEV_CTRL_DEV_ON,
+ 0);
+
+ if (ret)
+ pr_err("%s: Unable to write to DEV_CTRL_DEV_ON: %d\n",
+ __func__, ret);
}
static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST;
@@ -245,6 +368,7 @@ static const struct of_device_id of_palmas_match_tbl[] = {
},
{ },
};
+MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
static int palmas_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
@@ -279,7 +403,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
palmas->dev = &i2c->dev;
palmas->irq = i2c->irq;
- match = of_match_device(of_match_ptr(of_palmas_match_tbl), &i2c->dev);
+ match = of_match_device(of_palmas_match_tbl, &i2c->dev);
if (!match)
return -ENODATA;
@@ -298,7 +422,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
dev_err(palmas->dev,
"can't attach client %d\n", i);
ret = -ENOMEM;
- goto err;
+ goto err_i2c;
}
palmas->i2c_clients[i]->dev.of_node = of_node_get(node);
}
@@ -309,7 +433,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
dev_err(palmas->dev,
"Failed to allocate regmap %d, err: %d\n",
i, ret);
- goto err;
+ goto err_i2c;
}
}
@@ -328,7 +452,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
reg);
if (ret < 0) {
dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret);
- goto err;
+ goto err_i2c;
}
/* Change IRQ into clear on read mode for efficiency */
@@ -342,7 +466,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip,
&palmas->irq_data);
if (ret < 0)
- goto err;
+ goto err_i2c;
no_irq:
slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
@@ -423,27 +547,43 @@ no_irq:
*/
if (node) {
ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
- if (ret < 0)
+ if (ret < 0) {
goto err_irq;
- else
- return ret;
+ } else if (pdata->pm_off && !pm_power_off) {
+ palmas_dev = palmas;
+ pm_power_off = palmas_power_off;
+ }
}
return ret;
err_irq:
regmap_del_irq_chip(palmas->irq, palmas->irq_data);
-err:
+err_i2c:
+ for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
+ if (palmas->i2c_clients[i])
+ i2c_unregister_device(palmas->i2c_clients[i]);
+ }
return ret;
}
static int palmas_i2c_remove(struct i2c_client *i2c)
{
struct palmas *palmas = i2c_get_clientdata(i2c);
+ int i;
- mfd_remove_devices(palmas->dev);
regmap_del_irq_chip(palmas->irq, palmas->irq_data);
+ for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
+ if (palmas->i2c_clients[i])
+ i2c_unregister_device(palmas->i2c_clients[i]);
+ }
+
+ if (palmas == palmas_dev) {
+ pm_power_off = NULL;
+ palmas_dev = NULL;
+ }
+
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-04 01:05:07 +0000