[PATCH 1/2 v2] mfd: wm5102: Mark register write sequencer control 3 readable

From: Charles Keepax
Date: Wed Aug 13 2014 - 06:51:30 EST


From: Mark Brown <broonie@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---

Just added the sign-off I forgot on the last version.

Thanks,
Charles

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 deletions(-)

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 10a0cb9..7eabc36 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -784,7 +784,8 @@ 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 fb4d4bb..c18d527 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 dbd23c3..68913ec 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
--
1.7.2.5

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