diff options
Diffstat (limited to 'arch/arm/mach-omap2/sdrc2xxx.c')
-rw-r--r-- | arch/arm/mach-omap2/sdrc2xxx.c | 67 |
1 files changed, 16 insertions, 51 deletions
diff --git a/arch/arm/mach-omap2/sdrc2xxx.c b/arch/arm/mach-omap2/sdrc2xxx.c index 3e38aa4ea45..3a47aba2903 100644 --- a/arch/arm/mach-omap2/sdrc2xxx.c +++ b/arch/arm/mach-omap2/sdrc2xxx.c @@ -3,11 +3,12 @@ * * SDRAM timing related functions for OMAP2xxx * - * Copyright (C) 2005 Texas Instruments Inc. - * Richard Woodruff <r-woodruff2@ti.com> + * Copyright (C) 2005, 2008 Texas Instruments Inc. + * Copyright (C) 2005, 2008 Nokia Corporation * - * Copyright (C) 2005 Nokia Corporation * Tony Lindgren <tony@atomide.com> + * Paul Walmsley + * Richard Woodruff <r-woodruff2@ti.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -39,23 +40,20 @@ #define M_LOCK 1 -void __iomem *omap2_sdrc_base; -void __iomem *omap2_sms_base; - static struct memory_timings mem_timings; static u32 curr_perf_level = CORE_CLK_SRC_DPLL_X2; -u32 omap2_memory_get_slow_dll_ctrl(void) +static u32 omap2xxx_sdrc_get_slow_dll_ctrl(void) { return mem_timings.slow_dll_ctrl; } -u32 omap2_memory_get_fast_dll_ctrl(void) +static u32 omap2xxx_sdrc_get_fast_dll_ctrl(void) { return mem_timings.fast_dll_ctrl; } -u32 omap2_memory_get_type(void) +static u32 omap2xxx_sdrc_get_type(void) { return mem_timings.m_type; } @@ -64,7 +62,7 @@ u32 omap2_memory_get_type(void) * Check the DLL lock state, and return tue if running in unlock mode. * This is needed to compensate for the shifted DLL value in unlock mode. */ -u32 omap2_dll_force_needed(void) +u32 omap2xxx_sdrc_dll_is_unlocked(void) { /* dlla and dllb are a set */ u32 dll_state = sdrc_read_reg(SDRC_DLLA_CTRL); @@ -79,8 +77,10 @@ u32 omap2_dll_force_needed(void) * 'level' is the value to store to CM_CLKSEL2_PLL.CORE_CLK_SRC. * Practical values are CORE_CLK_SRC_DPLL (for CORE_CLK = DPLL_CLK) or * CORE_CLK_SRC_DPLL_X2 (for CORE_CLK = * DPLL_CLK * 2) + * + * Used by the clock framework during CORE DPLL changes */ -u32 omap2_reprogram_sdrc(u32 level, u32 force) +u32 omap2xxx_sdrc_reprogram(u32 level, u32 force) { u32 dll_ctrl, m_type; u32 prev = curr_perf_level; @@ -90,13 +90,13 @@ u32 omap2_reprogram_sdrc(u32 level, u32 force) return prev; if (level == CORE_CLK_SRC_DPLL) - dll_ctrl = omap2_memory_get_slow_dll_ctrl(); + dll_ctrl = omap2xxx_sdrc_get_slow_dll_ctrl(); else if (level == CORE_CLK_SRC_DPLL_X2) - dll_ctrl = omap2_memory_get_fast_dll_ctrl(); + dll_ctrl = omap2xxx_sdrc_get_fast_dll_ctrl(); else return prev; - m_type = omap2_memory_get_type(); + m_type = omap2xxx_sdrc_get_type(); local_irq_save(flags); __raw_writel(0xffff, OMAP24XX_PRCM_VOLTSETUP); @@ -107,18 +107,8 @@ u32 omap2_reprogram_sdrc(u32 level, u32 force) return prev; } -#if !defined(CONFIG_ARCH_OMAP2) -void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl, - u32 base_cs, u32 force_unlock) -{ -} -void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val, - u32 mem_type) -{ -} -#endif - -void omap2_init_memory_params(u32 force_lock_to_unlock_mode) +/* Used by the clock framework during CORE DPLL changes */ +void omap2xxx_sdrc_init_params(u32 force_lock_to_unlock_mode) { unsigned long dll_cnt; u32 fast_dll = 0; @@ -171,28 +161,3 @@ void omap2_init_memory_params(u32 force_lock_to_unlock_mode) /* 90 degree phase for anything below 133Mhz + disable DLL filter */ mem_timings.slow_dll_ctrl |= ((1 << 1) | (3 << 8)); } - -void __init omap2_set_globals_memory(struct omap_globals *omap2_globals) -{ - omap2_sdrc_base = omap2_globals->sdrc; - omap2_sms_base = omap2_globals->sms; -} - -/* turn on smart idle modes for SDRAM scheduler and controller */ -void __init omap2_init_memory(void) -{ - u32 l; - - if (!cpu_is_omap2420()) - return; - - l = sms_read_reg(SMS_SYSCONFIG); - l &= ~(0x3 << 3); - l |= (0x2 << 3); - sms_write_reg(l, SMS_SYSCONFIG); - - l = sdrc_read_reg(SDRC_SYSCONFIG); - l &= ~(0x3 << 3); - l |= (0x2 << 3); - sdrc_write_reg(l, SDRC_SYSCONFIG); -} |