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path: root/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
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Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-spmi-mpp.c')
-rw-r--r--drivers/pinctrl/qcom/pinctrl-spmi-mpp.c376
1 files changed, 182 insertions, 194 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index 3121de9b6331..e3be3ce2cada 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -61,7 +61,9 @@
#define PMIC_MPP_REG_DIG_PULL_CTL 0x42
#define PMIC_MPP_REG_DIG_IN_CTL 0x43
#define PMIC_MPP_REG_EN_CTL 0x46
+#define PMIC_MPP_REG_AOUT_CTL 0x48
#define PMIC_MPP_REG_AIN_CTL 0x4a
+#define PMIC_MPP_REG_SINK_CTL 0x4c
/* PMIC_MPP_REG_MODE_CTL */
#define PMIC_MPP_REG_MODE_VALUE_MASK 0x1
@@ -85,11 +87,25 @@
#define PMIC_MPP_REG_AIN_ROUTE_SHIFT 0
#define PMIC_MPP_REG_AIN_ROUTE_MASK 0x7
+#define PMIC_MPP_MODE_DIGITAL_INPUT 0
+#define PMIC_MPP_MODE_DIGITAL_OUTPUT 1
+#define PMIC_MPP_MODE_DIGITAL_BIDIR 2
+#define PMIC_MPP_MODE_ANALOG_BIDIR 3
+#define PMIC_MPP_MODE_ANALOG_INPUT 4
+#define PMIC_MPP_MODE_ANALOG_OUTPUT 5
+#define PMIC_MPP_MODE_CURRENT_SINK 6
+
+#define PMIC_MPP_SELECTOR_NORMAL 0
+#define PMIC_MPP_SELECTOR_PAIRED 1
+#define PMIC_MPP_SELECTOR_DTEST_FIRST 4
+
#define PMIC_MPP_PHYSICAL_OFFSET 1
/* Qualcomm specific pin configurations */
#define PMIC_MPP_CONF_AMUX_ROUTE (PIN_CONFIG_END + 1)
-#define PMIC_MPP_CONF_ANALOG_MODE (PIN_CONFIG_END + 2)
+#define PMIC_MPP_CONF_ANALOG_LEVEL (PIN_CONFIG_END + 2)
+#define PMIC_MPP_CONF_DTEST_SELECTOR (PIN_CONFIG_END + 3)
+#define PMIC_MPP_CONF_PAIRED (PIN_CONFIG_END + 4)
/**
* struct pmic_mpp_pad - keep current MPP settings
@@ -99,13 +115,15 @@
* @out_value: Cached pin output value.
* @output_enabled: Set to true if MPP output logic is enabled.
* @input_enabled: Set to true if MPP input buffer logic is enabled.
- * @analog_mode: Set to true when MPP should operate in Analog Input, Analog
- * Output or Bidirectional Analog mode.
+ * @paired: Pin operates in paired mode
* @num_sources: Number of power-sources supported by this MPP.
* @power_source: Current power-source used.
* @amux_input: Set the source for analog input.
+ * @aout_level: Analog output level
* @pullup: Pullup resistor value. Valid in Bidirectional mode only.
* @function: See pmic_mpp_functions[].
+ * @drive_strength: Amount of current in sink mode
+ * @dtest: DTEST route selector
*/
struct pmic_mpp_pad {
u16 base;
@@ -114,12 +132,15 @@ struct pmic_mpp_pad {
bool out_value;
bool output_enabled;
bool input_enabled;
- bool analog_mode;
+ bool paired;
unsigned int num_sources;
unsigned int power_source;
unsigned int amux_input;
+ unsigned int aout_level;
unsigned int pullup;
unsigned int function;
+ unsigned int drive_strength;
+ unsigned int dtest;
};
struct pmic_mpp_state {
@@ -129,25 +150,32 @@ struct pmic_mpp_state {
struct gpio_chip chip;
};
-struct pmic_mpp_bindings {
- const char *property;
- unsigned param;
+static const struct pinconf_generic_params pmic_mpp_bindings[] = {
+ {"qcom,amux-route", PMIC_MPP_CONF_AMUX_ROUTE, 0},
+ {"qcom,analog-level", PMIC_MPP_CONF_ANALOG_LEVEL, 0},
+ {"qcom,dtest", PMIC_MPP_CONF_DTEST_SELECTOR, 0},
+ {"qcom,paired", PMIC_MPP_CONF_PAIRED, 0},
};
-static struct pmic_mpp_bindings pmic_mpp_bindings[] = {
- {"qcom,amux-route", PMIC_MPP_CONF_AMUX_ROUTE},
- {"qcom,analog-mode", PMIC_MPP_CONF_ANALOG_MODE},
+#ifdef CONFIG_DEBUG_FS
+static const struct pin_config_item pmic_conf_items[] = {
+ PCONFDUMP(PMIC_MPP_CONF_AMUX_ROUTE, "analog mux", NULL, true),
+ PCONFDUMP(PMIC_MPP_CONF_ANALOG_LEVEL, "analog level", NULL, true),
+ PCONFDUMP(PMIC_MPP_CONF_DTEST_SELECTOR, "dtest", NULL, true),
+ PCONFDUMP(PMIC_MPP_CONF_PAIRED, "paired", NULL, false),
};
+#endif
static const char *const pmic_mpp_groups[] = {
"mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8",
};
+#define PMIC_MPP_DIGITAL 0
+#define PMIC_MPP_ANALOG 1
+#define PMIC_MPP_SINK 2
+
static const char *const pmic_mpp_functions[] = {
- PMIC_MPP_FUNC_NORMAL, PMIC_MPP_FUNC_PAIRED,
- "reserved1", "reserved2",
- PMIC_MPP_FUNC_DTEST1, PMIC_MPP_FUNC_DTEST2,
- PMIC_MPP_FUNC_DTEST3, PMIC_MPP_FUNC_DTEST4,
+ "digital", "analog", "sink"
};
static inline struct pmic_mpp_state *to_mpp_state(struct gpio_chip *chip)
@@ -204,118 +232,11 @@ static int pmic_mpp_get_group_pins(struct pinctrl_dev *pctldev,
return 0;
}
-static int pmic_mpp_parse_dt_config(struct device_node *np,
- struct pinctrl_dev *pctldev,
- unsigned long **configs,
- unsigned int *nconfs)
-{
- struct pmic_mpp_bindings *par;
- unsigned long cfg;
- int ret, i;
- u32 val;
-
- for (i = 0; i < ARRAY_SIZE(pmic_mpp_bindings); i++) {
- par = &pmic_mpp_bindings[i];
- ret = of_property_read_u32(np, par->property, &val);
-
- /* property not found */
- if (ret == -EINVAL)
- continue;
-
- /* use zero as default value, when no value is specified */
- if (ret)
- val = 0;
-
- dev_dbg(pctldev->dev, "found %s with value %u\n",
- par->property, val);
-
- cfg = pinconf_to_config_packed(par->param, val);
-
- ret = pinctrl_utils_add_config(pctldev, configs, nconfs, cfg);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static int pmic_mpp_dt_subnode_to_map(struct pinctrl_dev *pctldev,
- struct device_node *np,
- struct pinctrl_map **map,
- unsigned *reserv, unsigned *nmaps,
- enum pinctrl_map_type type)
-{
- unsigned long *configs = NULL;
- unsigned nconfs = 0;
- struct property *prop;
- const char *group;
- int ret;
-
- ret = pmic_mpp_parse_dt_config(np, pctldev, &configs, &nconfs);
- if (ret < 0)
- return ret;
-
- if (!nconfs)
- return 0;
-
- ret = of_property_count_strings(np, "pins");
- if (ret < 0)
- goto exit;
-
- ret = pinctrl_utils_reserve_map(pctldev, map, reserv, nmaps, ret);
- if (ret < 0)
- goto exit;
-
- of_property_for_each_string(np, "pins", prop, group) {
- ret = pinctrl_utils_add_map_configs(pctldev, map,
- reserv, nmaps, group,
- configs, nconfs, type);
- if (ret < 0)
- break;
- }
-exit:
- kfree(configs);
- return ret;
-}
-
-static int pmic_mpp_dt_node_to_map(struct pinctrl_dev *pctldev,
- struct device_node *np_config,
- struct pinctrl_map **map, unsigned *nmaps)
-{
- struct device_node *np;
- enum pinctrl_map_type type;
- unsigned reserv;
- int ret;
-
- ret = 0;
- *map = NULL;
- *nmaps = 0;
- reserv = 0;
- type = PIN_MAP_TYPE_CONFIGS_GROUP;
-
- for_each_child_of_node(np_config, np) {
- ret = pinconf_generic_dt_subnode_to_map(pctldev, np, map,
- &reserv, nmaps, type);
- if (ret)
- break;
-
- ret = pmic_mpp_dt_subnode_to_map(pctldev, np, map, &reserv,
- nmaps, type);
- if (ret)
- break;
- }
-
- if (ret < 0)
- pinctrl_utils_dt_free_map(pctldev, *map, *nmaps);
-
- return ret;
-}
-
static const struct pinctrl_ops pmic_mpp_pinctrl_ops = {
.get_groups_count = pmic_mpp_get_groups_count,
.get_group_name = pmic_mpp_get_group_name,
.get_group_pins = pmic_mpp_get_group_pins,
- .dt_node_to_map = pmic_mpp_dt_node_to_map,
+ .dt_node_to_map = pinconf_generic_dt_node_to_map_group,
.dt_free_map = pinctrl_utils_dt_free_map,
};
@@ -340,6 +261,53 @@ static int pmic_mpp_get_function_groups(struct pinctrl_dev *pctldev,
return 0;
}
+static int pmic_mpp_write_mode_ctl(struct pmic_mpp_state *state,
+ struct pmic_mpp_pad *pad)
+{
+ unsigned int mode;
+ unsigned int sel;
+ unsigned int val;
+ unsigned int en;
+
+ switch (pad->function) {
+ case PMIC_MPP_ANALOG:
+ if (pad->input_enabled && pad->output_enabled)
+ mode = PMIC_MPP_MODE_ANALOG_BIDIR;
+ else if (pad->input_enabled)
+ mode = PMIC_MPP_MODE_ANALOG_INPUT;
+ else
+ mode = PMIC_MPP_MODE_ANALOG_OUTPUT;
+ break;
+ case PMIC_MPP_DIGITAL:
+ if (pad->input_enabled && pad->output_enabled)
+ mode = PMIC_MPP_MODE_DIGITAL_BIDIR;
+ else if (pad->input_enabled)
+ mode = PMIC_MPP_MODE_DIGITAL_INPUT;
+ else
+ mode = PMIC_MPP_MODE_DIGITAL_OUTPUT;
+ break;
+ case PMIC_MPP_SINK:
+ default:
+ mode = PMIC_MPP_MODE_CURRENT_SINK;
+ break;
+ }
+
+ if (pad->dtest)
+ sel = PMIC_MPP_SELECTOR_DTEST_FIRST + pad->dtest - 1;
+ else if (pad->paired)
+ sel = PMIC_MPP_SELECTOR_PAIRED;
+ else
+ sel = PMIC_MPP_SELECTOR_NORMAL;
+
+ en = !!pad->out_value;
+
+ val = mode << PMIC_MPP_REG_MODE_DIR_SHIFT |
+ sel << PMIC_MPP_REG_MODE_FUNCTION_SHIFT |
+ en;
+
+ return pmic_mpp_write(state, pad, PMIC_MPP_REG_MODE_CTL, val);
+}
+
static int pmic_mpp_set_mux(struct pinctrl_dev *pctldev, unsigned function,
unsigned pin)
{
@@ -352,31 +320,7 @@ static int pmic_mpp_set_mux(struct pinctrl_dev *pctldev, unsigned function,
pad->function = function;
- if (!pad->analog_mode) {
- val = 0; /* just digital input */
- if (pad->output_enabled) {
- if (pad->input_enabled)
- val = 2; /* digital input and output */
- else
- val = 1; /* just digital output */
- }
- } else {
- val = 4; /* just analog input */
- if (pad->output_enabled) {
- if (pad->input_enabled)
- val = 3; /* analog input and output */
- else
- val = 5; /* just analog output */
- }
- }
-
- val = val << PMIC_MPP_REG_MODE_DIR_SHIFT;
- val |= pad->function << PMIC_MPP_REG_MODE_FUNCTION_SHIFT;
- val |= pad->out_value & PMIC_MPP_REG_MODE_VALUE_MASK;
-
- ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_MODE_CTL, val);
- if (ret < 0)
- return ret;
+ ret = pmic_mpp_write_mode_ctl(state, pad);
val = pad->is_enabled << PMIC_MPP_REG_MASTER_EN_SHIFT;
@@ -433,11 +377,20 @@ static int pmic_mpp_config_get(struct pinctrl_dev *pctldev,
case PIN_CONFIG_OUTPUT:
arg = pad->out_value;
break;
+ case PMIC_MPP_CONF_DTEST_SELECTOR:
+ arg = pad->dtest;
+ break;
case PMIC_MPP_CONF_AMUX_ROUTE:
arg = pad->amux_input;
break;
- case PMIC_MPP_CONF_ANALOG_MODE:
- arg = pad->analog_mode;
+ case PMIC_MPP_CONF_PAIRED:
+ arg = pad->paired;
+ break;
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ arg = pad->drive_strength;
+ break;
+ case PMIC_MPP_CONF_ANALOG_LEVEL:
+ arg = pad->aout_level;
break;
default:
return -EINVAL;
@@ -459,6 +412,9 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
pad = pctldev->desc->pins[pin].drv_data;
+ /* Make it possible to enable the pin, by not setting high impedance */
+ pad->is_enabled = true;
+
for (i = 0; i < nconfs; i++) {
param = pinconf_to_config_param(configs[i]);
arg = pinconf_to_config_argument(configs[i]);
@@ -497,13 +453,22 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
pad->output_enabled = true;
pad->out_value = arg;
break;
+ case PMIC_MPP_CONF_DTEST_SELECTOR:
+ pad->dtest = arg;
+ break;
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ arg = pad->drive_strength;
+ break;
case PMIC_MPP_CONF_AMUX_ROUTE:
if (arg >= PMIC_MPP_AMUX_ROUTE_ABUS4)
return -EINVAL;
pad->amux_input = arg;
break;
- case PMIC_MPP_CONF_ANALOG_MODE:
- pad->analog_mode = true;
+ case PMIC_MPP_CONF_ANALOG_LEVEL:
+ pad->aout_level = arg;
+ break;
+ case PMIC_MPP_CONF_PAIRED:
+ pad->paired = !!arg;
break;
default:
return -EINVAL;
@@ -528,29 +493,17 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
if (ret < 0)
return ret;
- if (!pad->analog_mode) {
- val = 0; /* just digital input */
- if (pad->output_enabled) {
- if (pad->input_enabled)
- val = 2; /* digital input and output */
- else
- val = 1; /* just digital output */
- }
- } else {
- val = 4; /* just analog input */
- if (pad->output_enabled) {
- if (pad->input_enabled)
- val = 3; /* analog input and output */
- else
- val = 5; /* just analog output */
- }
- }
+ ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_AOUT_CTL, pad->aout_level);
+ if (ret < 0)
+ return ret;
+
+ ret = pmic_mpp_write_mode_ctl(state, pad);
+ if (ret < 0)
+ return ret;
- val = val << PMIC_MPP_REG_MODE_DIR_SHIFT;
- val |= pad->function << PMIC_MPP_REG_MODE_FUNCTION_SHIFT;
- val |= pad->out_value & PMIC_MPP_REG_MODE_VALUE_MASK;
+ val = pad->is_enabled << PMIC_MPP_REG_MASTER_EN_SHIFT;
- return pmic_mpp_write(state, pad, PMIC_MPP_REG_MODE_CTL, val);
+ return pmic_mpp_write(state, pad, PMIC_MPP_REG_EN_CTL, val);
}
static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev,
@@ -558,20 +511,17 @@ static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev,
{
struct pmic_mpp_state *state = pinctrl_dev_get_drvdata(pctldev);
struct pmic_mpp_pad *pad;
- int ret, val;
+ int ret;
static const char *const biases[] = {
"0.6kOhm", "10kOhm", "30kOhm", "Disabled"
};
-
pad = pctldev->desc->pins[pin].drv_data;
seq_printf(s, " mpp%-2d:", pin + PMIC_MPP_PHYSICAL_OFFSET);
- val = pmic_mpp_read(state, pad, PMIC_MPP_REG_EN_CTL);
-
- if (val < 0 || !(val >> PMIC_MPP_REG_MASTER_EN_SHIFT)) {
+ if (!pad->is_enabled) {
seq_puts(s, " ---");
} else {
@@ -585,15 +535,20 @@ static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev,
}
seq_printf(s, " %-4s", pad->output_enabled ? "out" : "in");
- seq_printf(s, " %-4s", pad->analog_mode ? "ana" : "dig");
seq_printf(s, " %-7s", pmic_mpp_functions[pad->function]);
seq_printf(s, " vin-%d", pad->power_source);
+ seq_printf(s, " %d", pad->aout_level);
seq_printf(s, " %-8s", biases[pad->pullup]);
seq_printf(s, " %-4s", pad->out_value ? "high" : "low");
+ if (pad->dtest)
+ seq_printf(s, " dtest%d", pad->dtest);
+ if (pad->paired)
+ seq_puts(s, " paired");
}
}
static const struct pinconf_ops pmic_mpp_pinconf_ops = {
+ .is_generic = true,
.pin_config_group_get = pmic_mpp_config_get,
.pin_config_group_set = pmic_mpp_config_set,
.pin_config_group_dbg_show = pmic_mpp_config_dbg_show,
@@ -709,6 +664,7 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state,
struct pmic_mpp_pad *pad)
{
int type, subtype, val, dir;
+ unsigned int sel;
type = pmic_mpp_read(state, pad, PMIC_MPP_REG_TYPE);
if (type < 0)
@@ -751,43 +707,53 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state,
dir &= PMIC_MPP_REG_MODE_DIR_MASK;
switch (dir) {
- case 0:
+ case PMIC_MPP_MODE_DIGITAL_INPUT:
pad->input_enabled = true;
pad->output_enabled = false;
- pad->analog_mode = false;
+ pad->function = PMIC_MPP_DIGITAL;
break;
- case 1:
+ case PMIC_MPP_MODE_DIGITAL_OUTPUT:
pad->input_enabled = false;
pad->output_enabled = true;
- pad->analog_mode = false;
+ pad->function = PMIC_MPP_DIGITAL;
break;
- case 2:
+ case PMIC_MPP_MODE_DIGITAL_BIDIR:
pad->input_enabled = true;
pad->output_enabled = true;
- pad->analog_mode = false;
+ pad->function = PMIC_MPP_DIGITAL;
break;
- case 3:
+ case PMIC_MPP_MODE_ANALOG_BIDIR:
pad->input_enabled = true;
pad->output_enabled = true;
- pad->analog_mode = true;
+ pad->function = PMIC_MPP_ANALOG;
break;
- case 4:
+ case PMIC_MPP_MODE_ANALOG_INPUT:
pad->input_enabled = true;
pad->output_enabled = false;
- pad->analog_mode = true;
+ pad->function = PMIC_MPP_ANALOG;
break;
- case 5:
+ case PMIC_MPP_MODE_ANALOG_OUTPUT:
pad->input_enabled = false;
pad->output_enabled = true;
- pad->analog_mode = true;
+ pad->function = PMIC_MPP_ANALOG;
+ break;
+ case PMIC_MPP_MODE_CURRENT_SINK:
+ pad->input_enabled = false;
+ pad->output_enabled = true;
+ pad->function = PMIC_MPP_SINK;
break;
default:
dev_err(state->dev, "unknown MPP direction\n");
return -ENODEV;
}
- pad->function = val >> PMIC_MPP_REG_MODE_FUNCTION_SHIFT;
- pad->function &= PMIC_MPP_REG_MODE_FUNCTION_MASK;
+ sel = val >> PMIC_MPP_REG_MODE_FUNCTION_SHIFT;
+ sel &= PMIC_MPP_REG_MODE_FUNCTION_MASK;
+
+ if (sel >= PMIC_MPP_SELECTOR_DTEST_FIRST)
+ pad->dtest = sel + 1;
+ else if (sel == PMIC_MPP_SELECTOR_PAIRED)
+ pad->paired = true;
val = pmic_mpp_read(state, pad, PMIC_MPP_REG_DIG_VIN_CTL);
if (val < 0)
@@ -810,8 +776,24 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state,
pad->amux_input = val >> PMIC_MPP_REG_AIN_ROUTE_SHIFT;
pad->amux_input &= PMIC_MPP_REG_AIN_ROUTE_MASK;
- /* Pin could be disabled with PIN_CONFIG_BIAS_HIGH_IMPEDANCE */
- pad->is_enabled = true;
+ val = pmic_mpp_read(state, pad, PMIC_MPP_REG_SINK_CTL);
+ if (val < 0)
+ return val;
+
+ pad->drive_strength = val;
+
+ val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AOUT_CTL);
+ if (val < 0)
+ return val;
+
+ pad->aout_level = val;
+
+ val = pmic_mpp_read(state, pad, PMIC_MPP_REG_EN_CTL);
+ if (val < 0)
+ return val;
+
+ pad->is_enabled = !!val;
+
return 0;
}
@@ -866,6 +848,12 @@ static int pmic_mpp_probe(struct platform_device *pdev)
pctrldesc->pins = pindesc;
pctrldesc->npins = npins;
+ pctrldesc->num_custom_params = ARRAY_SIZE(pmic_mpp_bindings);
+ pctrldesc->custom_params = pmic_mpp_bindings;
+#ifdef CONFIG_DEBUG_FS
+ pctrldesc->custom_conf_items = pmic_conf_items;
+#endif
+
for (i = 0; i < npins; i++, pindesc++) {
pad = &pads[i];
pindesc->drv_data = pad;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 22:51:54 +0000