diff options
author | Rhyland Klein <rklein@nvidia.com> | 2012-05-11 05:36:26 -0400 |
---|---|---|
committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-05-20 11:26:58 -0400 |
commit | cd4209ced4d3936cfe51b7b8833260457e2d9995 (patch) | |
tree | 8b9604bef9c11813fcbec2e3d02aee2ed071f451 /drivers/mfd | |
parent | 1291aa457324e149bbda19bd637b4b8ec8f04bcb (diff) |
mfd: Add tps65910 device-tree support
Add device tree based initialization support for TI's tps65910 pmic.
Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r-- | drivers/mfd/tps65910.c | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c index 7dffbe1a50c6..a00c09ea0793 100644 --- a/drivers/mfd/tps65910.c +++ b/drivers/mfd/tps65910.c | |||
@@ -23,6 +23,7 @@ | |||
23 | #include <linux/mfd/core.h> | 23 | #include <linux/mfd/core.h> |
24 | #include <linux/regmap.h> | 24 | #include <linux/regmap.h> |
25 | #include <linux/mfd/tps65910.h> | 25 | #include <linux/mfd/tps65910.h> |
26 | #include <linux/of_device.h> | ||
26 | 27 | ||
27 | static struct mfd_cell tps65910s[] = { | 28 | static struct mfd_cell tps65910s[] = { |
28 | { | 29 | { |
@@ -129,6 +130,77 @@ err_sleep_init: | |||
129 | return ret; | 130 | return ret; |
130 | } | 131 | } |
131 | 132 | ||
133 | #ifdef CONFIG_OF | ||
134 | static struct of_device_id tps65910_of_match[] = { | ||
135 | { .compatible = "ti,tps65910", .data = (void *)TPS65910}, | ||
136 | { .compatible = "ti,tps65911", .data = (void *)TPS65911}, | ||
137 | { }, | ||
138 | }; | ||
139 | MODULE_DEVICE_TABLE(of, tps65910_of_match); | ||
140 | |||
141 | static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, | ||
142 | int *chip_id) | ||
143 | { | ||
144 | struct device_node *np = client->dev.of_node; | ||
145 | struct tps65910_board *board_info; | ||
146 | unsigned int prop; | ||
147 | const struct of_device_id *match; | ||
148 | unsigned int prop_array[TPS6591X_MAX_NUM_GPIO]; | ||
149 | int ret = 0; | ||
150 | int idx; | ||
151 | |||
152 | match = of_match_device(tps65910_of_match, &client->dev); | ||
153 | if (!match) { | ||
154 | dev_err(&client->dev, "Failed to find matching dt id\n"); | ||
155 | return NULL; | ||
156 | } | ||
157 | |||
158 | *chip_id = (int)match->data; | ||
159 | |||
160 | board_info = devm_kzalloc(&client->dev, sizeof(*board_info), | ||
161 | GFP_KERNEL); | ||
162 | if (!board_info) { | ||
163 | dev_err(&client->dev, "Failed to allocate pdata\n"); | ||
164 | return NULL; | ||
165 | } | ||
166 | |||
167 | ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop); | ||
168 | if (!ret) | ||
169 | board_info->vmbch_threshold = prop; | ||
170 | else if (*chip_id == TPS65911) | ||
171 | dev_warn(&client->dev, "VMBCH-Threshold not specified"); | ||
172 | |||
173 | ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop); | ||
174 | if (!ret) | ||
175 | board_info->vmbch2_threshold = prop; | ||
176 | else if (*chip_id == TPS65911) | ||
177 | dev_warn(&client->dev, "VMBCH2-Threshold not specified"); | ||
178 | |||
179 | ret = of_property_read_u32_array(np, "ti,en-gpio-sleep", | ||
180 | prop_array, TPS6591X_MAX_NUM_GPIO); | ||
181 | if (!ret) | ||
182 | for (idx = 0; idx < ARRAY_SIZE(prop_array); idx++) | ||
183 | board_info->en_gpio_sleep[idx] = (prop_array[idx] != 0); | ||
184 | else if (ret != -EINVAL) { | ||
185 | dev_err(&client->dev, | ||
186 | "error reading property ti,en-gpio-sleep: %d\n.", ret); | ||
187 | return NULL; | ||
188 | } | ||
189 | |||
190 | |||
191 | board_info->irq = client->irq; | ||
192 | board_info->irq_base = -1; | ||
193 | board_info->gpio_base = -1; | ||
194 | |||
195 | return board_info; | ||
196 | } | ||
197 | #else | ||
198 | static inline struct tps65910_board *tps65910_parse_dt( | ||
199 | struct i2c_client *client) | ||
200 | { | ||
201 | return NULL; | ||
202 | } | ||
203 | #endif | ||
132 | 204 | ||
133 | static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, | 205 | static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, |
134 | const struct i2c_device_id *id) | 206 | const struct i2c_device_id *id) |
@@ -137,8 +209,13 @@ static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, | |||
137 | struct tps65910_board *pmic_plat_data; | 209 | struct tps65910_board *pmic_plat_data; |
138 | struct tps65910_platform_data *init_data; | 210 | struct tps65910_platform_data *init_data; |
139 | int ret = 0; | 211 | int ret = 0; |
212 | int chip_id = id->driver_data; | ||
140 | 213 | ||
141 | pmic_plat_data = dev_get_platdata(&i2c->dev); | 214 | pmic_plat_data = dev_get_platdata(&i2c->dev); |
215 | |||
216 | if (!pmic_plat_data && i2c->dev.of_node) | ||
217 | pmic_plat_data = tps65910_parse_dt(i2c, &chip_id); | ||
218 | |||
142 | if (!pmic_plat_data) | 219 | if (!pmic_plat_data) |
143 | return -EINVAL; | 220 | return -EINVAL; |
144 | 221 | ||
@@ -155,7 +232,7 @@ static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, | |||
155 | i2c_set_clientdata(i2c, tps65910); | 232 | i2c_set_clientdata(i2c, tps65910); |
156 | tps65910->dev = &i2c->dev; | 233 | tps65910->dev = &i2c->dev; |
157 | tps65910->i2c_client = i2c; | 234 | tps65910->i2c_client = i2c; |
158 | tps65910->id = id->driver_data; | 235 | tps65910->id = chip_id; |
159 | mutex_init(&tps65910->io_mutex); | 236 | mutex_init(&tps65910->io_mutex); |
160 | 237 | ||
161 | tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config); | 238 | tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config); |
@@ -215,6 +292,7 @@ static struct i2c_driver tps65910_i2c_driver = { | |||
215 | .driver = { | 292 | .driver = { |
216 | .name = "tps65910", | 293 | .name = "tps65910", |
217 | .owner = THIS_MODULE, | 294 | .owner = THIS_MODULE, |
295 | .of_match_table = of_match_ptr(tps65910_of_match), | ||
218 | }, | 296 | }, |
219 | .probe = tps65910_i2c_probe, | 297 | .probe = tps65910_i2c_probe, |
220 | .remove = __devexit_p(tps65910_i2c_remove), | 298 | .remove = __devexit_p(tps65910_i2c_remove), |