diff options
| author | Tony Lindgren <tony@atomide.com> | 2019-10-16 17:37:06 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2019-10-16 17:51:15 +0300 |
| commit | d44fa156dcb29dd0215c1fe63e7a7031a106557e (patch) | |
| tree | 992eb4e7c74956db688fe2600bc0405f00bf25a6 /arch/arm/mach-omap2/pm.h | |
| parent | 32236a84906f9df6aeccf6cc735c8e911ef26da6 (diff) | |
| download | linux-d44fa156dcb29dd0215c1fe63e7a7031a106557e.tar.xz | |
ARM: OMAP2+: Configure voltage controller for cpcap
We can configure voltage controller for cpcap with the data available in
Motorola Mapphone Android Linux kernel. Let's add it so we can have droid4
behave the same way for voltage controller as other omap4 devices and save
some power when idle.
Note that we're now using high-speed i2c mode, looks like the Motorola
kernel had a typo using 0x200 instead of 200 for the timings which may
caused it to not work properly.
Also note that in the long run, this should just become dts data for a
voltage controller device driver. But let's get things working first to
make it possible to test further changes easily.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm.h')
| -rw-r--r-- | arch/arm/mach-omap2/pm.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index 8a55b69bca63..2a883a0c1fcd 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -107,6 +107,11 @@ extern u16 pm44xx_errata; #define IS_PM44XX_ERRATUM(id) 0 #endif +#define OMAP4_VP_CONFIG_ERROROFFSET 0x00 +#define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01 +#define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04 +#define OMAP4_VP_VLIMITTO_TIMEOUT_US 200 + #ifdef CONFIG_POWER_AVS_OMAP extern int omap_devinit_smartreflex(void); extern void omap_enable_smartreflex_on_init(void); @@ -134,6 +139,15 @@ static inline int omap4_twl_init(void) } #endif +#if IS_ENABLED(CONFIG_MFD_CPCAP) +extern int omap4_cpcap_init(void); +#else +static inline int omap4_cpcap_init(void) +{ + return -EINVAL; +} +#endif + #ifdef CONFIG_PM extern void omap_pm_setup_oscillator(u32 tstart, u32 tshut); extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut); |