From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Pandruvada Subject: [RFC Patch v0 3/3] iio: Capella cm3218x: smbus alert processing Date: Wed, 26 Mar 2014 17:42:12 -0700 Message-ID: <1395880932-19124-3-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1395880932-19124-1-git-send-email-srinivas.pandruvada@linux.intel.com> Return-path: In-Reply-To: <1395880932-19124-1-git-send-email-srinivas.pandruvada-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org Cc: linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ktsai-GubuWUlQtMwciDkP5Hr2oA@public.gmane.org, Srinivas Pandruvada List-Id: linux-i2c@vger.kernel.org Added driver alert callback and modified existing polls to the core calls. Signed-off-by: Srinivas Pandruvada --- drivers/iio/light/cm3218x.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/iio/light/cm3218x.c b/drivers/iio/light/cm3218x.c index e422f68..774b199 100644 --- a/drivers/iio/light/cm3218x.c +++ b/drivers/iio/light/cm3218x.c @@ -23,6 +23,7 @@ #include #include #include +#include /* Registers Address */ #define CM3218x_REG_ADDR_CMD 0x00 @@ -130,6 +131,12 @@ static int cm3218x_get_lux(struct cm3218x_chip *chip); static int cm3218x_threshold_update(struct cm3218x_chip *chip, int percent); static int cm3218x_read_als_it(struct cm3218x_chip *chip, int *val2); +/* alert callback for i2c driver */ +static void cm3218x_alert(struct i2c_client *client, unsigned int flag) +{ + dev_err(&client->dev, "SMBUS alert flag %d\n", flag); +} + /** * cm3218x_read_ara() - Read ARA register * @cm3218x: pointer of struct cm3218x. @@ -142,19 +149,7 @@ static int cm3218x_read_als_it(struct cm3218x_chip *chip, int *val2); */ static int cm3218x_read_ara(struct cm3218x_chip *chip) { - struct i2c_client *client = chip->client; - int status; - unsigned short addr; - - addr = client->addr; - client->addr = 0x0C; - status = i2c_smbus_read_byte(client); - client->addr = addr; - - if (status < 0) - return -ENODEV; - - return status; + return i2c_smbus_ara_poll(chip->client); } /** @@ -760,6 +755,7 @@ static struct i2c_driver cm3218x_driver = { .id_table = cm3218x_id, .probe = cm3218x_probe, .remove = cm3218x_remove, + .alert = cm3218x_alert, }; module_i2c_driver(cm3218x_driver); -- 1.8.3.2