diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-amd-mp2-plat.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-amd-mp2-plat.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-amd-mp2-plat.c b/drivers/i2c/busses/i2c-amd-mp2-plat.c index f5b3f00c6559..17df9e8845b6 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-plat.c +++ b/drivers/i2c/busses/i2c-amd-mp2-plat.c @@ -201,32 +201,37 @@ static int i2c_amd_resume(struct amd_i2c_common *i2c_common) } #endif +static const u32 supported_speeds[] = { + I2C_MAX_HIGH_SPEED_MODE_FREQ, + I2C_MAX_TURBO_MODE_FREQ, + I2C_MAX_FAST_MODE_PLUS_FREQ, + I2C_MAX_FAST_MODE_FREQ, + I2C_MAX_STANDARD_MODE_FREQ, +}; + static enum speed_enum i2c_amd_get_bus_speed(struct platform_device *pdev) { u32 acpi_speed; int i; - static const u32 supported_speeds[] = { - 0, 100000, 400000, 1000000, 1400000, 3400000 - }; acpi_speed = i2c_acpi_find_bus_speed(&pdev->dev); /* round down to the lowest standard speed */ - for (i = 1; i < ARRAY_SIZE(supported_speeds); i++) { - if (acpi_speed < supported_speeds[i]) + for (i = 0; i < ARRAY_SIZE(supported_speeds); i++) { + if (acpi_speed >= supported_speeds[i]) break; } - acpi_speed = supported_speeds[i - 1]; + acpi_speed = i < ARRAY_SIZE(supported_speeds) ? supported_speeds[i] : 0; switch (acpi_speed) { - case 100000: + case I2C_MAX_STANDARD_MODE_FREQ: return speed100k; - case 400000: + case I2C_MAX_FAST_MODE_FREQ: return speed400k; - case 1000000: + case I2C_MAX_FAST_MODE_PLUS_FREQ: return speed1000k; - case 1400000: + case I2C_MAX_TURBO_MODE_FREQ: return speed1400k; - case 3400000: + case I2C_MAX_HIGH_SPEED_MODE_FREQ: return speed3400k; default: return speed400k; |