diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-nomadik.c')
-rw-r--r-- | drivers/i2c/busses/i2c-nomadik.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index 5e6f1eed4f83..61b00edacb08 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c | |||
@@ -350,10 +350,6 @@ static void setup_i2c_controller(struct nmk_i2c_dev *dev) | |||
350 | 350 | ||
351 | i2c_clk = clk_get_rate(dev->clk); | 351 | i2c_clk = clk_get_rate(dev->clk); |
352 | 352 | ||
353 | /* fallback to std. mode if machine has not provided it */ | ||
354 | if (dev->cfg.clk_freq == 0) | ||
355 | dev->cfg.clk_freq = 100000; | ||
356 | |||
357 | /* | 353 | /* |
358 | * The spec says, in case of std. mode the divider is | 354 | * The spec says, in case of std. mode the divider is |
359 | * 2 whereas it is 3 for fast and fastplus mode of | 355 | * 2 whereas it is 3 for fast and fastplus mode of |
@@ -911,20 +907,32 @@ static const struct i2c_algorithm nmk_i2c_algo = { | |||
911 | .functionality = nmk_i2c_functionality | 907 | .functionality = nmk_i2c_functionality |
912 | }; | 908 | }; |
913 | 909 | ||
910 | static struct nmk_i2c_controller u8500_i2c = { | ||
911 | /* | ||
912 | * Slave data setup time; 250ns, 100ns, and 10ns, which | ||
913 | * is 14, 6 and 2 respectively for a 48Mhz i2c clock. | ||
914 | */ | ||
915 | .slsu = 0xe, | ||
916 | .tft = 1, /* Tx FIFO threshold */ | ||
917 | .rft = 8, /* Rx FIFO threshold */ | ||
918 | .clk_freq = 400000, /* fast mode operation */ | ||
919 | .timeout = 200, /* Slave response timeout(ms) */ | ||
920 | .sm = I2C_FREQ_MODE_FAST, | ||
921 | }; | ||
922 | |||
914 | static atomic_t adapter_id = ATOMIC_INIT(0); | 923 | static atomic_t adapter_id = ATOMIC_INIT(0); |
915 | 924 | ||
916 | static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) | 925 | static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) |
917 | { | 926 | { |
918 | int ret = 0; | 927 | int ret = 0; |
919 | struct nmk_i2c_controller *pdata = | 928 | struct nmk_i2c_controller *pdata = adev->dev.platform_data; |
920 | adev->dev.platform_data; | ||
921 | struct nmk_i2c_dev *dev; | 929 | struct nmk_i2c_dev *dev; |
922 | struct i2c_adapter *adap; | 930 | struct i2c_adapter *adap; |
923 | 931 | ||
924 | if (!pdata) { | 932 | if (!pdata) |
925 | dev_warn(&adev->dev, "no platform data\n"); | 933 | /* No i2c configuration found, using the default. */ |
926 | return -ENODEV; | 934 | pdata = &u8500_i2c; |
927 | } | 935 | |
928 | dev = kzalloc(sizeof(struct nmk_i2c_dev), GFP_KERNEL); | 936 | dev = kzalloc(sizeof(struct nmk_i2c_dev), GFP_KERNEL); |
929 | if (!dev) { | 937 | if (!dev) { |
930 | dev_err(&adev->dev, "cannot allocate memory\n"); | 938 | dev_err(&adev->dev, "cannot allocate memory\n"); |