[PATCH v2 1/4] regulator: lp872x: Remove warning about invalid DVS GPIO
From: Kim, Milo <hidden>
Date: 2016-02-12 00:15:35
Also in:
linux-devicetree, linux-omap, lkml
On 2/6/2016 3:42 AM, Paul Kocialkowski wrote:
Some devices don't hook the DVS pin to a GPIO but to ground or VCC. In those cases, it is not a problem to have no DVS GPIO provided, as the current code will already switch to software-only DVS selection: When the DVS GPIO is invalid, lp872x_init_dvs jumps to the set_default_dvs_mode label, which instructs the chip not to use the DVS pin at all and do it all in software instead (by clearing the LP8720_EXT_DVS_M bit in the LP872X_GENERAL_CFG register). That is reflected later in the code, when setting the bucks (the DVS pin only applies to the bucks) by checking for the LP8720_EXT_DVS_M bit on the LP872X_GENERAL_CFG register (in lp872x_select_buck_vout_addr) to decide whether to use software or hardware DVS selection. Thus, there is no need to print a warning when the DVS GPIO is invalid. Signed-off-by: Paul Kocialkowski <redacted>
Acked-by: Milo Kim <redacted>
quoted hunk ↗ jump to hunk
--- drivers/regulator/lp872x.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)diff --git a/drivers/regulator/lp872x.c b/drivers/regulator/lp872x.c index 19d7584..21c49d8 100644 --- a/drivers/regulator/lp872x.c +++ b/drivers/regulator/lp872x.c@@ -738,10 +738,8 @@ static int lp872x_init_dvs(struct lp872x *lp) goto set_default_dvs_mode; gpio = dvs->gpio; - if (!gpio_is_valid(gpio)) { - dev_warn(lp->dev, "invalid gpio: %d\n", gpio); + if (!gpio_is_valid(gpio)) goto set_default_dvs_mode; - } pinstate = dvs->init_state; ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS");