From: Mark Brown broonie@linaro.org

During init the core checks if the wm5102 has finished starting by reading register 0x19 and looking at the value. This read always fails since this is not a readable register, mark it as being one. While we're at it provide a constant for the register name (as supplied by Charles Keepax).

Signed-off-by: Mark Brown broonie@linaro.org --- drivers/mfd/arizona-core.c | 3 ++- drivers/mfd/wm5102-tables.c | 1 + include/linux/mfd/arizona/registers.h | 1 + 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 1c3ae57082ed..d4919fa2797a 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -745,7 +745,8 @@ int arizona_dev_init(struct arizona *arizona) /* Ensure device startup is complete */ switch (arizona->type) { case WM5102: - ret = regmap_read(arizona->regmap, 0x19, &val); + ret = regmap_read(arizona->regmap, + ARIZONA_WRITE_SEQUENCER_CTRL_3, &val); if (ret != 0) dev_err(dev, "Failed to check write sequencer state: %d\n", diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c index f4668d39e542..e32736c3ab57 100644 --- a/drivers/mfd/wm5102-tables.c +++ b/drivers/mfd/wm5102-tables.c @@ -1016,6 +1016,7 @@ static bool wm5102_readable_register(struct device *dev, unsigned int reg) case ARIZONA_WRITE_SEQUENCER_CTRL_0: case ARIZONA_WRITE_SEQUENCER_CTRL_1: case ARIZONA_WRITE_SEQUENCER_CTRL_2: + case ARIZONA_WRITE_SEQUENCER_CTRL_3: case ARIZONA_WRITE_SEQUENCER_PROM: case ARIZONA_TONE_GENERATOR_1: case ARIZONA_TONE_GENERATOR_2: diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 90d57aec34e7..f6ad81e923ac 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -27,6 +27,7 @@ #define ARIZONA_WRITE_SEQUENCER_CTRL_0 0x16 #define ARIZONA_WRITE_SEQUENCER_CTRL_1 0x17 #define ARIZONA_WRITE_SEQUENCER_CTRL_2 0x18 +#define ARIZONA_WRITE_SEQUENCER_CTRL_3 0x19 #define ARIZONA_WRITE_SEQUENCER_PROM 0x1A #define ARIZONA_TONE_GENERATOR_1 0x20 #define ARIZONA_TONE_GENERATOR_2 0x21