diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 18:54:04 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 18:54:04 -0400 |
| commit | b779b332d0e1ef68f40867948ae5526a3e925163 (patch) | |
| tree | d2fc8bb455d696fbdb288055ce0a4f0cfcee31fd /drivers/mfd/max8998.c | |
| parent | a0cadc2777a71b1fde62e6417284b38e52128e88 (diff) | |
| parent | 0f48285755991b73c14b6eeeee464590f490ac25 (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (73 commits)
power: Revert "power_supply: Mark twl4030_charger as broken"
mfd: Fix a memory leak when unload mc13xxx-core module
mfd: Fix resource reclaim for max8998
mfd: Remove unneeded ret value checking for max8998 register updates
mfd: Add free max8998->ono irq in max8998_irq_exit()
mfd: Fix resource reclaim in pcf50633_remove()
omap4: pandaboard: fix up mmc card detect logic
mfd: Fix ezx_pcap_probe error path
mfd: Fix off-by-one value range checking for tps6507x
mfd: Remove __devinitdata from tc6393xb_mmc_resources
mfd: Add WM831x SPI support
mfd: Factor out WM831x I2C I/O from the core driver
mfd: Remove DEBUG defines from mc13xxx-core
mfd: Fix jz4740_adc_set_enabled
mfd: Add TPS658621C device ID
mfd: Fix twl-irq function declaration warnings
regulator: max8998 BUCK1/2 voltage change with use of GPIOs
mfd: Voltages and GPIOs platform_data definitions for max8998
regulator: max8998 BUCK1/2 internal voltages and indexes defined
mfd: Support for ICs compliant with max8998
...
Diffstat (limited to 'drivers/mfd/max8998.c')
| -rw-r--r-- | drivers/mfd/max8998.c | 90 |
1 files changed, 69 insertions, 21 deletions
diff --git a/drivers/mfd/max8998.c b/drivers/mfd/max8998.c index 73e6f5c4efc9..bb9977bebe78 100644 --- a/drivers/mfd/max8998.c +++ b/drivers/mfd/max8998.c | |||
| @@ -1,5 +1,5 @@ | |||
| 1 | /* | 1 | /* |
| 2 | * max8698.c - mfd core driver for the Maxim 8998 | 2 | * max8998.c - mfd core driver for the Maxim 8998 |
| 3 | * | 3 | * |
| 4 | * Copyright (C) 2009-2010 Samsung Electronics | 4 | * Copyright (C) 2009-2010 Samsung Electronics |
| 5 | * Kyungmin Park <kyungmin.park@samsung.com> | 5 | * Kyungmin Park <kyungmin.park@samsung.com> |
| @@ -30,19 +30,23 @@ | |||
| 30 | #include <linux/mfd/max8998.h> | 30 | #include <linux/mfd/max8998.h> |
| 31 | #include <linux/mfd/max8998-private.h> | 31 | #include <linux/mfd/max8998-private.h> |
| 32 | 32 | ||
| 33 | #define RTC_I2C_ADDR (0x0c >> 1) | ||
| 34 | |||
| 33 | static struct mfd_cell max8998_devs[] = { | 35 | static struct mfd_cell max8998_devs[] = { |
| 34 | { | 36 | { |
| 35 | .name = "max8998-pmic", | 37 | .name = "max8998-pmic", |
| 36 | } | 38 | }, { |
| 39 | .name = "max8998-rtc", | ||
| 40 | }, | ||
| 37 | }; | 41 | }; |
| 38 | 42 | ||
| 39 | static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest) | 43 | int max8998_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) |
| 40 | { | 44 | { |
| 41 | struct i2c_client *client = max8998->i2c_client; | 45 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); |
| 42 | int ret; | 46 | int ret; |
| 43 | 47 | ||
| 44 | mutex_lock(&max8998->iolock); | 48 | mutex_lock(&max8998->iolock); |
| 45 | ret = i2c_smbus_read_byte_data(client, reg); | 49 | ret = i2c_smbus_read_byte_data(i2c, reg); |
| 46 | mutex_unlock(&max8998->iolock); | 50 | mutex_unlock(&max8998->iolock); |
| 47 | if (ret < 0) | 51 | if (ret < 0) |
| 48 | return ret; | 52 | return ret; |
| @@ -51,40 +55,71 @@ static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest | |||
| 51 | *dest = ret; | 55 | *dest = ret; |
| 52 | return 0; | 56 | return 0; |
| 53 | } | 57 | } |
| 58 | EXPORT_SYMBOL(max8998_read_reg); | ||
| 54 | 59 | ||
| 55 | static int max8998_i2c_device_write(struct max8998_dev *max8998, u8 reg, u8 value) | 60 | int max8998_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf) |
| 56 | { | 61 | { |
| 57 | struct i2c_client *client = max8998->i2c_client; | 62 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); |
| 63 | int ret; | ||
| 64 | |||
| 65 | mutex_lock(&max8998->iolock); | ||
| 66 | ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); | ||
| 67 | mutex_unlock(&max8998->iolock); | ||
| 68 | if (ret < 0) | ||
| 69 | return ret; | ||
| 70 | |||
| 71 | return 0; | ||
| 72 | } | ||
| 73 | EXPORT_SYMBOL(max8998_bulk_read); | ||
| 74 | |||
| 75 | int max8998_write_reg(struct i2c_client *i2c, u8 reg, u8 value) | ||
| 76 | { | ||
| 77 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); | ||
| 58 | int ret; | 78 | int ret; |
| 59 | 79 | ||
| 60 | mutex_lock(&max8998->iolock); | 80 | mutex_lock(&max8998->iolock); |
| 61 | ret = i2c_smbus_write_byte_data(client, reg, value); | 81 | ret = i2c_smbus_write_byte_data(i2c, reg, value); |
| 62 | mutex_unlock(&max8998->iolock); | 82 | mutex_unlock(&max8998->iolock); |
| 63 | return ret; | 83 | return ret; |
| 64 | } | 84 | } |
| 85 | EXPORT_SYMBOL(max8998_write_reg); | ||
| 65 | 86 | ||
| 66 | static int max8998_i2c_device_update(struct max8998_dev *max8998, u8 reg, | 87 | int max8998_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf) |
| 67 | u8 val, u8 mask) | ||
| 68 | { | 88 | { |
| 69 | struct i2c_client *client = max8998->i2c_client; | 89 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); |
| 90 | int ret; | ||
| 91 | |||
| 92 | mutex_lock(&max8998->iolock); | ||
| 93 | ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); | ||
| 94 | mutex_unlock(&max8998->iolock); | ||
| 95 | if (ret < 0) | ||
| 96 | return ret; | ||
| 97 | |||
| 98 | return 0; | ||
| 99 | } | ||
| 100 | EXPORT_SYMBOL(max8998_bulk_write); | ||
| 101 | |||
| 102 | int max8998_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask) | ||
| 103 | { | ||
| 104 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); | ||
| 70 | int ret; | 105 | int ret; |
| 71 | 106 | ||
| 72 | mutex_lock(&max8998->iolock); | 107 | mutex_lock(&max8998->iolock); |
| 73 | ret = i2c_smbus_read_byte_data(client, reg); | 108 | ret = i2c_smbus_read_byte_data(i2c, reg); |
| 74 | if (ret >= 0) { | 109 | if (ret >= 0) { |
| 75 | u8 old_val = ret & 0xff; | 110 | u8 old_val = ret & 0xff; |
| 76 | u8 new_val = (val & mask) | (old_val & (~mask)); | 111 | u8 new_val = (val & mask) | (old_val & (~mask)); |
| 77 | ret = i2c_smbus_write_byte_data(client, reg, new_val); | 112 | ret = i2c_smbus_write_byte_data(i2c, reg, new_val); |
| 78 | if (ret >= 0) | ||
| 79 | ret = 0; | ||
| 80 | } | 113 | } |
| 81 | mutex_unlock(&max8998->iolock); | 114 | mutex_unlock(&max8998->iolock); |
| 82 | return ret; | 115 | return ret; |
| 83 | } | 116 | } |
| 117 | EXPORT_SYMBOL(max8998_update_reg); | ||
| 84 | 118 | ||
| 85 | static int max8998_i2c_probe(struct i2c_client *i2c, | 119 | static int max8998_i2c_probe(struct i2c_client *i2c, |
| 86 | const struct i2c_device_id *id) | 120 | const struct i2c_device_id *id) |
| 87 | { | 121 | { |
| 122 | struct max8998_platform_data *pdata = i2c->dev.platform_data; | ||
| 88 | struct max8998_dev *max8998; | 123 | struct max8998_dev *max8998; |
| 89 | int ret = 0; | 124 | int ret = 0; |
| 90 | 125 | ||
| @@ -94,12 +129,20 @@ static int max8998_i2c_probe(struct i2c_client *i2c, | |||
| 94 | 129 | ||
| 95 | i2c_set_clientdata(i2c, max8998); | 130 | i2c_set_clientdata(i2c, max8998); |
| 96 | max8998->dev = &i2c->dev; | 131 | max8998->dev = &i2c->dev; |
| 97 | max8998->i2c_client = i2c; | 132 | max8998->i2c = i2c; |
| 98 | max8998->dev_read = max8998_i2c_device_read; | 133 | max8998->irq = i2c->irq; |
| 99 | max8998->dev_write = max8998_i2c_device_write; | 134 | max8998->type = id->driver_data; |
| 100 | max8998->dev_update = max8998_i2c_device_update; | 135 | if (pdata) { |
| 136 | max8998->ono = pdata->ono; | ||
| 137 | max8998->irq_base = pdata->irq_base; | ||
| 138 | } | ||
| 101 | mutex_init(&max8998->iolock); | 139 | mutex_init(&max8998->iolock); |
| 102 | 140 | ||
| 141 | max8998->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); | ||
| 142 | i2c_set_clientdata(max8998->rtc, max8998); | ||
| 143 | |||
| 144 | max8998_irq_init(max8998); | ||
| 145 | |||
| 103 | ret = mfd_add_devices(max8998->dev, -1, | 146 | ret = mfd_add_devices(max8998->dev, -1, |
| 104 | max8998_devs, ARRAY_SIZE(max8998_devs), | 147 | max8998_devs, ARRAY_SIZE(max8998_devs), |
| 105 | NULL, 0); | 148 | NULL, 0); |
| @@ -110,6 +153,8 @@ static int max8998_i2c_probe(struct i2c_client *i2c, | |||
| 110 | 153 | ||
| 111 | err: | 154 | err: |
| 112 | mfd_remove_devices(max8998->dev); | 155 | mfd_remove_devices(max8998->dev); |
| 156 | max8998_irq_exit(max8998); | ||
| 157 | i2c_unregister_device(max8998->rtc); | ||
| 113 | kfree(max8998); | 158 | kfree(max8998); |
| 114 | return ret; | 159 | return ret; |
| 115 | } | 160 | } |
| @@ -119,14 +164,17 @@ static int max8998_i2c_remove(struct i2c_client *i2c) | |||
| 119 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); | 164 | struct max8998_dev *max8998 = i2c_get_clientdata(i2c); |
| 120 | 165 | ||
| 121 | mfd_remove_devices(max8998->dev); | 166 | mfd_remove_devices(max8998->dev); |
| 167 | max8998_irq_exit(max8998); | ||
| 168 | i2c_unregister_device(max8998->rtc); | ||
| 122 | kfree(max8998); | 169 | kfree(max8998); |
| 123 | 170 | ||
| 124 | return 0; | 171 | return 0; |
| 125 | } | 172 | } |
| 126 | 173 | ||
| 127 | static const struct i2c_device_id max8998_i2c_id[] = { | 174 | static const struct i2c_device_id max8998_i2c_id[] = { |
| 128 | { "max8998", 0 }, | 175 | { "max8998", TYPE_MAX8998 }, |
| 129 | { } | 176 | { "lp3974", TYPE_LP3974}, |
| 177 | { } | ||
| 130 | }; | 178 | }; |
| 131 | MODULE_DEVICE_TABLE(i2c, max8998_i2c_id); | 179 | MODULE_DEVICE_TABLE(i2c, max8998_i2c_id); |
| 132 | 180 | ||
