>From c1aba8ba7af3ddd16346d95795bda71e65baa4d0 Mon Sep 17 00:00:00 2001 From: Chunqiu Wang <[email protected]> Date: Wed, 24 Jun 2009 06:48:52 +0800 Subject: [PATCH] Support OMAP3 VC adaptation with different Power IC
Current OMAP SmartReflex driver only supports TI Triton Power IC, add a callback to make it possible to use different PowerIC and use different settings to configure OMAP3 Voltage Controller for DVFS Board file can setup a new function to have different settings on SR to configure their Power IC for voltage scaling Signed-off-by: Chunqiu Wang <[email protected]> --- arch/arm/mach-omap2/smartreflex.c | 13 +++++++++++++ arch/arm/mach-omap2/smartreflex.h | 4 ++++ arch/arm/plat-omap/Kconfig | 2 +- 3 files changed, 18 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c index 9d462e3..bacf602 100644 --- a/arch/arm/mach-omap2/smartreflex.c +++ b/arch/arm/mach-omap2/smartreflex.c @@ -52,6 +52,8 @@ struct omap_sr { #define SR_REGADDR(offs) (sr->srbase_addr + offset) +static omap3_voltagescale_vcbypass_t omap3_volscale_vcbypass_fun; + static inline void sr_write_reg(struct omap_sr *sr, unsigned offset, u32 value) { __raw_writel(value, SR_REGADDR(offset)); @@ -767,6 +769,11 @@ void disable_smartreflex(int srid) } } +void omap3_voltagescale_vcbypass_setup(omap3_voltagescale_vcbypass_t fun) +{ + omap3_volscale_vcbypass_fun = fun; +} + /* Voltage Scaling using SR VCBYPASS */ int sr_voltagescale_vcbypass(u32 target_opp, u32 current_opp, u8 target_vsel, u8 current_vsel) @@ -779,6 +786,10 @@ int sr_voltagescale_vcbypass(u32 target_opp, u32 current_opp, u32 t2_smps_steps = 0; u32 t2_smps_delay = 0; + if (omap3_volscale_vcbypass_fun) + return omap3_volscale_vcbypass_fun(target_opp, current_opp, + target_vsel, current_vsel); + vdd = get_vdd(target_opp); target_opp_no = get_opp_no(target_opp); current_opp_no = get_opp_no(current_opp); @@ -940,6 +951,7 @@ static int __init omap3_sr_init(void) return -ENODEV; } +#ifdef CONFIG_TWL4030_CORE /* Enable SR on T2 */ ret = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &RdReg, R_DCDC_GLOBAL_CFG); @@ -947,6 +959,7 @@ static int __init omap3_sr_init(void) RdReg |= DCDC_GLOBAL_CFG_ENABLE_SRFLX; ret |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, RdReg, R_DCDC_GLOBAL_CFG); +#endif if (cpu_is_omap34xx()) { sr1.clk = clk_get(NULL, "sr1_fck"); diff --git a/arch/arm/mach-omap2/smartreflex.h b/arch/arm/mach-omap2/smartreflex.h index 2a0e823..c4aca9d 100644 --- a/arch/arm/mach-omap2/smartreflex.h +++ b/arch/arm/mach-omap2/smartreflex.h @@ -248,9 +248,13 @@ void disable_smartreflex(int srid); int sr_voltagescale_vcbypass(u32 t_opp, u32 c_opp, u8 t_vsel, u8 c_vsel); void sr_start_vddautocomap(int srid, u32 target_opp_no); int sr_stop_vddautocomap(int srid); +typedef int (*omap3_voltagescale_vcbypass_t)(u32 t_opp, u32 c_opp, + u8 t_vsel, u8 c_vsel); +void omap3_voltagescale_vcbypass_setup(omap3_voltagescale_vcbypass_t fun); #else static inline void enable_smartreflex(int srid) {} static inline void disable_smartreflex(int srid) {} +#define omap3_voltagescale_vcbypass_setup(fun) do {} while (0); #endif #endif diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index c8ba1e2..8d2c607 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -68,7 +68,7 @@ config OMAP_DEBUG_CLOCKDOMAIN config OMAP_SMARTREFLEX bool "SmartReflex support" - depends on ARCH_OMAP34XX && TWL4030_CORE && PM + depends on ARCH_OMAP34XX && PM help Say Y if you want to enable SmartReflex. -- 1.5.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
