[PATCH 7/9] mfd: tps65218: add version check to the PMIC probe

Keerthy
2016-06-20T09:02:04Z

From: Tero Kristo <t-kristo@ti.com>

Version information will be needed to handle some error cases under the
regulator driver, so store the information once during MFD probe.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/mfd/tps65218.c | 9 +++++++++
include/linux/mfd/tps65218.h | 1 +
2 files changed, 10 insertions(+)

diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
index 80b9dc3..ba610ad 100644
--- a/drivers/mfd/tps65218.c
+++ b/drivers/mfd/tps65218.c
@@ -219,6 +219,7 @@ static int tps65218_probe(struct i2c_client *client,
struct tps65218 *tps;
const struct of_device_id *match;
int ret;
+ unsigned int chipid;

match = of_match_device(of_tps65218_match_table, &client->dev);
if (!match) {
@@ -250,6 +251,14 @@ static int tps65218_probe(struct i2c_client *client,
if (ret < 0)
return ret;

+ ret = tps65218_reg_read(tps, TPS65218_REG_CHIPID, &chipid);
+ if (ret) {
+ dev_err(tps->dev, "Failed to read chipid: %d\n", ret);
+ return ret;
+ }
+
+ tps->rev = chipid & TPS65218_CHIPID_REV_MASK;
+
ret = of_platform_populate(client->dev.of_node, NULL, NULL,
&client->dev);
if (ret < 0)
diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
index 7fdf532..85e464e 100644
--- a/include/linux/mfd/tps65218.h
+++ b/include/linux/mfd/tps65218.h
@@ -267,6 +267,7 @@ struct tps_info {
struct tps65218 {
struct device *dev;
unsigned int id;
+ u8 rev;

struct mutex tps_lock; /* lock guarding the data structure */
/* IRQ Data */
--
1.9.1