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Subject[PATCH 1/2] input: adp5588-keys - get value from data out when dir out
Date
As discussed here: http://ez.analog.com/message/35852,
the 5587 revC and 5588 revB spec sheets contain a mistake
in the GPIO_DAT_STATx register description.

According to R.Shnell at ADI, as well as my own
observations, it should read:
"GPIO data status (shows GPIO state when read for inputs)".

This commit changes the get value function accordingly.

A similar patch for gpio-adp5588 follows.

Signed-off-by: Jean-François Dagenais <jeff.dagenais@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
---
drivers/input/keyboard/adp5588-keys.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 6412ced..b7a0f1a 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -78,6 +78,13 @@ static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);

+ mutex_lock(&kpad->gpio_lock);
+ if (kpad->dir[bank] & bit) {
+ int result = !!(kpad->dat_out[bank] & bit);
+ mutex_unlock(&kpad->gpio_lock);
+ return result;
+ }
+ mutex_unlock(&kpad->gpio_lock);
return !!(adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank) & bit);
}

--
1.7.8.2
--
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