diff options
Diffstat (limited to 'drivers/regulator/core.c')
-rw-r--r-- | drivers/regulator/core.c | 341 |
1 files changed, 0 insertions, 341 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 1034e05fb00a..01d9675b0e83 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c | |||
@@ -1904,77 +1904,6 @@ int regulator_disable_deferred(struct regulator *regulator, int ms) | |||
1904 | } | 1904 | } |
1905 | EXPORT_SYMBOL_GPL(regulator_disable_deferred); | 1905 | EXPORT_SYMBOL_GPL(regulator_disable_deferred); |
1906 | 1906 | ||
1907 | /** | ||
1908 | * regulator_is_enabled_regmap - standard is_enabled() for regmap users | ||
1909 | * | ||
1910 | * @rdev: regulator to operate on | ||
1911 | * | ||
1912 | * Regulators that use regmap for their register I/O can set the | ||
1913 | * enable_reg and enable_mask fields in their descriptor and then use | ||
1914 | * this as their is_enabled operation, saving some code. | ||
1915 | */ | ||
1916 | int regulator_is_enabled_regmap(struct regulator_dev *rdev) | ||
1917 | { | ||
1918 | unsigned int val; | ||
1919 | int ret; | ||
1920 | |||
1921 | ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val); | ||
1922 | if (ret != 0) | ||
1923 | return ret; | ||
1924 | |||
1925 | if (rdev->desc->enable_is_inverted) | ||
1926 | return (val & rdev->desc->enable_mask) == 0; | ||
1927 | else | ||
1928 | return (val & rdev->desc->enable_mask) != 0; | ||
1929 | } | ||
1930 | EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap); | ||
1931 | |||
1932 | /** | ||
1933 | * regulator_enable_regmap - standard enable() for regmap users | ||
1934 | * | ||
1935 | * @rdev: regulator to operate on | ||
1936 | * | ||
1937 | * Regulators that use regmap for their register I/O can set the | ||
1938 | * enable_reg and enable_mask fields in their descriptor and then use | ||
1939 | * this as their enable() operation, saving some code. | ||
1940 | */ | ||
1941 | int regulator_enable_regmap(struct regulator_dev *rdev) | ||
1942 | { | ||
1943 | unsigned int val; | ||
1944 | |||
1945 | if (rdev->desc->enable_is_inverted) | ||
1946 | val = 0; | ||
1947 | else | ||
1948 | val = rdev->desc->enable_mask; | ||
1949 | |||
1950 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | ||
1951 | rdev->desc->enable_mask, val); | ||
1952 | } | ||
1953 | EXPORT_SYMBOL_GPL(regulator_enable_regmap); | ||
1954 | |||
1955 | /** | ||
1956 | * regulator_disable_regmap - standard disable() for regmap users | ||
1957 | * | ||
1958 | * @rdev: regulator to operate on | ||
1959 | * | ||
1960 | * Regulators that use regmap for their register I/O can set the | ||
1961 | * enable_reg and enable_mask fields in their descriptor and then use | ||
1962 | * this as their disable() operation, saving some code. | ||
1963 | */ | ||
1964 | int regulator_disable_regmap(struct regulator_dev *rdev) | ||
1965 | { | ||
1966 | unsigned int val; | ||
1967 | |||
1968 | if (rdev->desc->enable_is_inverted) | ||
1969 | val = rdev->desc->enable_mask; | ||
1970 | else | ||
1971 | val = 0; | ||
1972 | |||
1973 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | ||
1974 | rdev->desc->enable_mask, val); | ||
1975 | } | ||
1976 | EXPORT_SYMBOL_GPL(regulator_disable_regmap); | ||
1977 | |||
1978 | static int _regulator_is_enabled(struct regulator_dev *rdev) | 1907 | static int _regulator_is_enabled(struct regulator_dev *rdev) |
1979 | { | 1908 | { |
1980 | /* A GPIO control always takes precedence */ | 1909 | /* A GPIO control always takes precedence */ |
@@ -2239,235 +2168,6 @@ int regulator_is_supported_voltage(struct regulator *regulator, | |||
2239 | } | 2168 | } |
2240 | EXPORT_SYMBOL_GPL(regulator_is_supported_voltage); | 2169 | EXPORT_SYMBOL_GPL(regulator_is_supported_voltage); |
2241 | 2170 | ||
2242 | /** | ||
2243 | * regulator_get_voltage_sel_regmap - standard get_voltage_sel for regmap users | ||
2244 | * | ||
2245 | * @rdev: regulator to operate on | ||
2246 | * | ||
2247 | * Regulators that use regmap for their register I/O can set the | ||
2248 | * vsel_reg and vsel_mask fields in their descriptor and then use this | ||
2249 | * as their get_voltage_vsel operation, saving some code. | ||
2250 | */ | ||
2251 | int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev) | ||
2252 | { | ||
2253 | unsigned int val; | ||
2254 | int ret; | ||
2255 | |||
2256 | ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val); | ||
2257 | if (ret != 0) | ||
2258 | return ret; | ||
2259 | |||
2260 | val &= rdev->desc->vsel_mask; | ||
2261 | val >>= ffs(rdev->desc->vsel_mask) - 1; | ||
2262 | |||
2263 | return val; | ||
2264 | } | ||
2265 | EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_regmap); | ||
2266 | |||
2267 | /** | ||
2268 | * regulator_set_voltage_sel_regmap - standard set_voltage_sel for regmap users | ||
2269 | * | ||
2270 | * @rdev: regulator to operate on | ||
2271 | * @sel: Selector to set | ||
2272 | * | ||
2273 | * Regulators that use regmap for their register I/O can set the | ||
2274 | * vsel_reg and vsel_mask fields in their descriptor and then use this | ||
2275 | * as their set_voltage_vsel operation, saving some code. | ||
2276 | */ | ||
2277 | int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel) | ||
2278 | { | ||
2279 | int ret; | ||
2280 | |||
2281 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | ||
2282 | |||
2283 | ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg, | ||
2284 | rdev->desc->vsel_mask, sel); | ||
2285 | if (ret) | ||
2286 | return ret; | ||
2287 | |||
2288 | if (rdev->desc->apply_bit) | ||
2289 | ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg, | ||
2290 | rdev->desc->apply_bit, | ||
2291 | rdev->desc->apply_bit); | ||
2292 | return ret; | ||
2293 | } | ||
2294 | EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_regmap); | ||
2295 | |||
2296 | /** | ||
2297 | * regulator_map_voltage_iterate - map_voltage() based on list_voltage() | ||
2298 | * | ||
2299 | * @rdev: Regulator to operate on | ||
2300 | * @min_uV: Lower bound for voltage | ||
2301 | * @max_uV: Upper bound for voltage | ||
2302 | * | ||
2303 | * Drivers implementing set_voltage_sel() and list_voltage() can use | ||
2304 | * this as their map_voltage() operation. It will find a suitable | ||
2305 | * voltage by calling list_voltage() until it gets something in bounds | ||
2306 | * for the requested voltages. | ||
2307 | */ | ||
2308 | int regulator_map_voltage_iterate(struct regulator_dev *rdev, | ||
2309 | int min_uV, int max_uV) | ||
2310 | { | ||
2311 | int best_val = INT_MAX; | ||
2312 | int selector = 0; | ||
2313 | int i, ret; | ||
2314 | |||
2315 | /* Find the smallest voltage that falls within the specified | ||
2316 | * range. | ||
2317 | */ | ||
2318 | for (i = 0; i < rdev->desc->n_voltages; i++) { | ||
2319 | ret = rdev->desc->ops->list_voltage(rdev, i); | ||
2320 | if (ret < 0) | ||
2321 | continue; | ||
2322 | |||
2323 | if (ret < best_val && ret >= min_uV && ret <= max_uV) { | ||
2324 | best_val = ret; | ||
2325 | selector = i; | ||
2326 | } | ||
2327 | } | ||
2328 | |||
2329 | if (best_val != INT_MAX) | ||
2330 | return selector; | ||
2331 | else | ||
2332 | return -EINVAL; | ||
2333 | } | ||
2334 | EXPORT_SYMBOL_GPL(regulator_map_voltage_iterate); | ||
2335 | |||
2336 | /** | ||
2337 | * regulator_map_voltage_ascend - map_voltage() for ascendant voltage list | ||
2338 | * | ||
2339 | * @rdev: Regulator to operate on | ||
2340 | * @min_uV: Lower bound for voltage | ||
2341 | * @max_uV: Upper bound for voltage | ||
2342 | * | ||
2343 | * Drivers that have ascendant voltage list can use this as their | ||
2344 | * map_voltage() operation. | ||
2345 | */ | ||
2346 | int regulator_map_voltage_ascend(struct regulator_dev *rdev, | ||
2347 | int min_uV, int max_uV) | ||
2348 | { | ||
2349 | int i, ret; | ||
2350 | |||
2351 | for (i = 0; i < rdev->desc->n_voltages; i++) { | ||
2352 | ret = rdev->desc->ops->list_voltage(rdev, i); | ||
2353 | if (ret < 0) | ||
2354 | continue; | ||
2355 | |||
2356 | if (ret > max_uV) | ||
2357 | break; | ||
2358 | |||
2359 | if (ret >= min_uV && ret <= max_uV) | ||
2360 | return i; | ||
2361 | } | ||
2362 | |||
2363 | return -EINVAL; | ||
2364 | } | ||
2365 | EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend); | ||
2366 | |||
2367 | /** | ||
2368 | * regulator_map_voltage_linear - map_voltage() for simple linear mappings | ||
2369 | * | ||
2370 | * @rdev: Regulator to operate on | ||
2371 | * @min_uV: Lower bound for voltage | ||
2372 | * @max_uV: Upper bound for voltage | ||
2373 | * | ||
2374 | * Drivers providing min_uV and uV_step in their regulator_desc can | ||
2375 | * use this as their map_voltage() operation. | ||
2376 | */ | ||
2377 | int regulator_map_voltage_linear(struct regulator_dev *rdev, | ||
2378 | int min_uV, int max_uV) | ||
2379 | { | ||
2380 | int ret, voltage; | ||
2381 | |||
2382 | /* Allow uV_step to be 0 for fixed voltage */ | ||
2383 | if (rdev->desc->n_voltages == 1 && rdev->desc->uV_step == 0) { | ||
2384 | if (min_uV <= rdev->desc->min_uV && rdev->desc->min_uV <= max_uV) | ||
2385 | return 0; | ||
2386 | else | ||
2387 | return -EINVAL; | ||
2388 | } | ||
2389 | |||
2390 | if (!rdev->desc->uV_step) { | ||
2391 | BUG_ON(!rdev->desc->uV_step); | ||
2392 | return -EINVAL; | ||
2393 | } | ||
2394 | |||
2395 | if (min_uV < rdev->desc->min_uV) | ||
2396 | min_uV = rdev->desc->min_uV; | ||
2397 | |||
2398 | ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step); | ||
2399 | if (ret < 0) | ||
2400 | return ret; | ||
2401 | |||
2402 | ret += rdev->desc->linear_min_sel; | ||
2403 | |||
2404 | /* Map back into a voltage to verify we're still in bounds */ | ||
2405 | voltage = rdev->desc->ops->list_voltage(rdev, ret); | ||
2406 | if (voltage < min_uV || voltage > max_uV) | ||
2407 | return -EINVAL; | ||
2408 | |||
2409 | return ret; | ||
2410 | } | ||
2411 | EXPORT_SYMBOL_GPL(regulator_map_voltage_linear); | ||
2412 | |||
2413 | /** | ||
2414 | * regulator_map_voltage_linear - map_voltage() for multiple linear ranges | ||
2415 | * | ||
2416 | * @rdev: Regulator to operate on | ||
2417 | * @min_uV: Lower bound for voltage | ||
2418 | * @max_uV: Upper bound for voltage | ||
2419 | * | ||
2420 | * Drivers providing linear_ranges in their descriptor can use this as | ||
2421 | * their map_voltage() callback. | ||
2422 | */ | ||
2423 | int regulator_map_voltage_linear_range(struct regulator_dev *rdev, | ||
2424 | int min_uV, int max_uV) | ||
2425 | { | ||
2426 | const struct regulator_linear_range *range; | ||
2427 | int ret = -EINVAL; | ||
2428 | int voltage, i; | ||
2429 | |||
2430 | if (!rdev->desc->n_linear_ranges) { | ||
2431 | BUG_ON(!rdev->desc->n_linear_ranges); | ||
2432 | return -EINVAL; | ||
2433 | } | ||
2434 | |||
2435 | for (i = 0; i < rdev->desc->n_linear_ranges; i++) { | ||
2436 | range = &rdev->desc->linear_ranges[i]; | ||
2437 | |||
2438 | if (!(min_uV <= range->max_uV && max_uV >= range->min_uV)) | ||
2439 | continue; | ||
2440 | |||
2441 | if (min_uV <= range->min_uV) | ||
2442 | min_uV = range->min_uV; | ||
2443 | |||
2444 | /* range->uV_step == 0 means fixed voltage range */ | ||
2445 | if (range->uV_step == 0) { | ||
2446 | ret = 0; | ||
2447 | } else { | ||
2448 | ret = DIV_ROUND_UP(min_uV - range->min_uV, | ||
2449 | range->uV_step); | ||
2450 | if (ret < 0) | ||
2451 | return ret; | ||
2452 | } | ||
2453 | |||
2454 | ret += range->min_sel; | ||
2455 | |||
2456 | break; | ||
2457 | } | ||
2458 | |||
2459 | if (i == rdev->desc->n_linear_ranges) | ||
2460 | return -EINVAL; | ||
2461 | |||
2462 | /* Map back into a voltage to verify we're still in bounds */ | ||
2463 | voltage = rdev->desc->ops->list_voltage(rdev, ret); | ||
2464 | if (voltage < min_uV || voltage > max_uV) | ||
2465 | return -EINVAL; | ||
2466 | |||
2467 | return ret; | ||
2468 | } | ||
2469 | EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range); | ||
2470 | |||
2471 | static int _regulator_do_set_voltage(struct regulator_dev *rdev, | 2171 | static int _regulator_do_set_voltage(struct regulator_dev *rdev, |
2472 | int min_uV, int max_uV) | 2172 | int min_uV, int max_uV) |
2473 | { | 2173 | { |
@@ -3071,47 +2771,6 @@ out: | |||
3071 | EXPORT_SYMBOL_GPL(regulator_set_optimum_mode); | 2771 | EXPORT_SYMBOL_GPL(regulator_set_optimum_mode); |
3072 | 2772 | ||
3073 | /** | 2773 | /** |
3074 | * regulator_set_bypass_regmap - Default set_bypass() using regmap | ||
3075 | * | ||
3076 | * @rdev: device to operate on. | ||
3077 | * @enable: state to set. | ||
3078 | */ | ||
3079 | int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable) | ||
3080 | { | ||
3081 | unsigned int val; | ||
3082 | |||
3083 | if (enable) | ||
3084 | val = rdev->desc->bypass_mask; | ||
3085 | else | ||
3086 | val = 0; | ||
3087 | |||
3088 | return regmap_update_bits(rdev->regmap, rdev->desc->bypass_reg, | ||
3089 | rdev->desc->bypass_mask, val); | ||
3090 | } | ||
3091 | EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap); | ||
3092 | |||
3093 | /** | ||
3094 | * regulator_get_bypass_regmap - Default get_bypass() using regmap | ||
3095 | * | ||
3096 | * @rdev: device to operate on. | ||
3097 | * @enable: current state. | ||
3098 | */ | ||
3099 | int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable) | ||
3100 | { | ||
3101 | unsigned int val; | ||
3102 | int ret; | ||
3103 | |||
3104 | ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val); | ||
3105 | if (ret != 0) | ||
3106 | return ret; | ||
3107 | |||
3108 | *enable = val & rdev->desc->bypass_mask; | ||
3109 | |||
3110 | return 0; | ||
3111 | } | ||
3112 | EXPORT_SYMBOL_GPL(regulator_get_bypass_regmap); | ||
3113 | |||
3114 | /** | ||
3115 | * regulator_allow_bypass - allow the regulator to go into bypass mode | 2774 | * regulator_allow_bypass - allow the regulator to go into bypass mode |
3116 | * | 2775 | * |
3117 | * @regulator: Regulator to configure | 2776 | * @regulator: Regulator to configure |