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pinctrl: sprd: Add CM4 sleep mode support 

For the new Spreadtrum pin controller, it expands 6bits to describe the
pin sleep mode with adding one CM4_SLEEP mode, which means the pin sleep
related configuration will be loaded automatically by hardware when the
CM4 system goes into deep sleep mode.

Signed-off-by: Bruce Chen <bruce.chen@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Link: https://lore.kernel.org/r/8ae52263b0625c416461821c457e6789b67170b6.1571228451.git.baolin.wang@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bruce Chen 2019-10-16 20:23:39 +08:00 committed by Linus Walleij
parent 45892b4c6c
commit e543b3f5bb
1 changed files with 5 additions and 1 deletions
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6
drivers/pinctrl/sprd/pinctrl-sprd.c
View File

@ -41,7 +41,8 @@
#define PUBCP_SLEEP_MODE BIT(14)
#define TGLDSP_SLEEP_MODE BIT(15)
#define AGDSP_SLEEP_MODE BIT(16)
#define SLEEP_MODE_MASK GENMASK(3, 0)
#define CM4_SLEEP_MODE BIT(17)
#define SLEEP_MODE_MASK GENMASK(5, 0)
#define SLEEP_MODE_SHIFT 13
#define SLEEP_INPUT BIT(1)
@ -81,6 +82,7 @@ enum pin_sleep_mode {
PUBCP_SLEEP = BIT(1),
TGLDSP_SLEEP = BIT(2),
AGDSP_SLEEP = BIT(3),
CM4_SLEEP = BIT(4),
};
enum pin_func_sel {
@ -616,6 +618,8 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
val |= TGLDSP_SLEEP_MODE;
if (arg & AGDSP_SLEEP)
val |= AGDSP_SLEEP_MODE;
if (arg & CM4_SLEEP)
val |= CM4_SLEEP_MODE;
mask = SLEEP_MODE_MASK;
shift = SLEEP_MODE_SHIFT;