diff options
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 6 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock24xx.c | 23 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/io.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/sdrc.c | 57 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/sdrc2xxx.c | 67 | ||||
| -rw-r--r-- | arch/arm/plat-omap/common.c | 2 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/mach/common.h | 2 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/mach/sdrc.h | 37 |
8 files changed, 115 insertions, 81 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index bb47d43af396..9717afcdbda7 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -3,7 +3,7 @@ # # Common support -obj-y := irq.o id.o io.o sdrc2xxx.o control.o prcm.o clock.o mux.o \ +obj-y := irq.o id.o io.o sdrc.o control.o prcm.o clock.o mux.o \ devices.o serial.o gpmc.o timer-gp.o powerdomain.o \ clockdomain.o @@ -14,6 +14,10 @@ obj-$(CONFIG_ARCH_OMAP2420) += sram242x.o obj-$(CONFIG_ARCH_OMAP2430) += sram243x.o obj-$(CONFIG_ARCH_OMAP3) += sram34xx.o +# SMS/SDRC +obj-$(CONFIG_ARCH_OMAP2) += sdrc2xxx.o +# obj-$(CONFIG_ARCH_OMAP3) += sdrc3xxx.o + # Power Management ifeq ($(CONFIG_PM),y) obj-y += pm.o diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c index 83911ad48733..a11e7c71177c 100644 --- a/arch/arm/mach-omap2/clock24xx.c +++ b/arch/arm/mach-omap2/clock24xx.c @@ -389,9 +389,9 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate) mult &= OMAP24XX_CORE_CLK_SRC_MASK; if ((rate == (cur_rate / 2)) && (mult == 2)) { - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL, 1); + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1); } else if ((rate == (cur_rate * 2)) && (mult == 1)) { - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1); + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1); } else if (rate != cur_rate) { valid_rate = omap2_dpllcore_round_rate(rate); if (valid_rate != rate) @@ -430,15 +430,16 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate) if (rate == curr_prcm_set->xtal_speed) /* If asking for 1-1 */ bypass = 1; - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1); /* For init_mem */ + /* For omap2xxx_sdrc_init_params() */ + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1); /* Force dll lock mode */ omap2_set_prcm(tmpset.cm_clksel1_pll, tmpset.base_sdrc_rfr, bypass); /* Errata: ret dll entry state */ - omap2_init_memory_params(omap2_dll_force_needed()); - omap2_reprogram_sdrc(done_rate, 0); + omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked()); + omap2xxx_sdrc_reprogram(done_rate, 0); } omap2_dpllcore_recalc(&dpll_ck); ret = 0; @@ -525,9 +526,9 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate) cur_rate = omap2_get_dpll_rate_24xx(&dpll_ck); if (prcm->dpll_speed == cur_rate / 2) { - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL, 1); + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1); } else if (prcm->dpll_speed == cur_rate * 2) { - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1); + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1); } else if (prcm->dpll_speed != cur_rate) { local_irq_save(flags); @@ -558,14 +559,14 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate) cm_write_mod_reg(prcm->cm_clksel_mdm, OMAP2430_MDM_MOD, CM_CLKSEL); - /* x2 to enter init_mem */ - omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1); + /* x2 to enter omap2xxx_sdrc_init_params() */ + omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1); omap2_set_prcm(prcm->cm_clksel1_pll, prcm->base_sdrc_rfr, bypass); - omap2_init_memory_params(omap2_dll_force_needed()); - omap2_reprogram_sdrc(done_rate, 0); + omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked()); + omap2xxx_sdrc_reprogram(done_rate, 0); local_irq_restore(flags); } diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 2b5f28a3c4b4..3c1de3615eb8 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -201,6 +201,6 @@ void __init omap2_init_common_hw(void) pwrdm_init(powerdomains_omap); clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps); omap2_clk_init(); - omap2_init_memory(); + omap2_sdrc_init(); gpmc_init(); } diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c new file mode 100644 index 000000000000..24b54d50b893 --- /dev/null +++ b/arch/arm/mach-omap2/sdrc.c @@ -0,0 +1,57 @@ +/* + * SMS/SDRC (SDRAM controller) common code for OMAP2/3 + * + * Copyright (C) 2005, 2008 Texas Instruments Inc. + * Copyright (C) 2005, 2008 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 + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/common.h> +#include <mach/clock.h> +#include <mach/sram.h> + +#include "prm.h" + +#include <mach/sdrc.h> +#include "sdrc.h" + +void __iomem *omap2_sdrc_base; +void __iomem *omap2_sms_base; + +void __init omap2_set_globals_sdrc(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_sdrc_init(void) +{ + u32 l; + + 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); +} diff --git a/arch/arm/mach-omap2/sdrc2xxx.c b/arch/arm/mach-omap2/sdrc2xxx.c index 3e38aa4ea458..3a47aba29031 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); -} diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c index 0843b8882f93..187239c054c9 100644 --- a/arch/arm/plat-omap/common.c +++ b/arch/arm/plat-omap/common.c @@ -249,7 +249,7 @@ static struct omap_globals *omap2_globals; static void __init __omap2_set_globals(void) { omap2_set_globals_tap(omap2_globals); - omap2_set_globals_memory(omap2_globals); + omap2_set_globals_sdrc(omap2_globals); omap2_set_globals_control(omap2_globals); omap2_set_globals_prcm(omap2_globals); } diff --git a/arch/arm/plat-omap/include/mach/common.h b/arch/arm/plat-omap/include/mach/common.h index ef70e2b0f054..f3444a66a57e 100644 --- a/arch/arm/plat-omap/include/mach/common.h +++ b/arch/arm/plat-omap/include/mach/common.h @@ -65,7 +65,7 @@ void omap2_set_globals_343x(void); /* These get called from omap2_set_globals_xxxx(), do not call these */ void omap2_set_globals_tap(struct omap_globals *); -void omap2_set_globals_memory(struct omap_globals *); +void omap2_set_globals_sdrc(struct omap_globals *); void omap2_set_globals_control(struct omap_globals *); void omap2_set_globals_prcm(struct omap_globals *); diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h index c905b5268e56..8e0740eb83fb 100644 --- a/arch/arm/plat-omap/include/mach/sdrc.h +++ b/arch/arm/plat-omap/include/mach/sdrc.h @@ -4,10 +4,12 @@ /* * OMAP2/3 SDRC/SMS register definitions * - * Copyright (C) 2007 Texas Instruments, Inc. - * Copyright (C) 2007 Nokia Corporation + * Copyright (C) 2007-2008 Texas Instruments, Inc. + * Copyright (C) 2007-2008 Nokia Corporation * - * Written by Paul Walmsley + * Tony Lindgren + * Paul Walmsley + * Richard Woodruff * * 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 @@ -64,18 +66,25 @@ * SMS register access */ - -#define OMAP242X_SMS_REGADDR(reg) IO_ADDRESS(OMAP2420_SMS_BASE + reg) -#define OMAP243X_SMS_REGADDR(reg) IO_ADDRESS(OMAP243X_SMS_BASE + reg) -#define OMAP343X_SMS_REGADDR(reg) IO_ADDRESS(OMAP343X_SMS_BASE + reg) +#define OMAP242X_SMS_REGADDR(reg) \ + (void __iomem *)IO_ADDRESS(OMAP2420_SMS_BASE + reg) +#define OMAP243X_SMS_REGADDR(reg) \ + (void __iomem *)IO_ADDRESS(OMAP243X_SMS_BASE + reg) +#define OMAP343X_SMS_REGADDR(reg) \ + (void __iomem *)IO_ADDRESS(OMAP343X_SMS_BASE + reg) /* SMS register offsets - read/write with sms_{read,write}_reg() */ #define SMS_SYSCONFIG 0x010 /* REVISIT: fill in other SMS registers here */ + #ifndef __ASSEMBLER__ +void __init omap2_sdrc_init(void); + +#ifdef CONFIG_ARCH_OMAP2 + struct memory_timings { u32 m_type; /* ddr = 1, sdr = 0 */ u32 dll_mode; /* use lock mode = 1, unlock mode = 0 */ @@ -84,15 +93,13 @@ struct memory_timings { u32 base_cs; /* base chip select to use for calculations */ }; -extern void omap2_init_memory_params(u32 force_lock_to_unlock_mode); -extern u32 omap2_memory_get_slow_dll_ctrl(void); -extern u32 omap2_memory_get_fast_dll_ctrl(void); -extern u32 omap2_memory_get_type(void); -u32 omap2_dll_force_needed(void); -u32 omap2_reprogram_sdrc(u32 level, u32 force); -void __init omap2_init_memory(void); +extern void omap2xxx_sdrc_init_params(u32 force_lock_to_unlock_mode); -#endif +u32 omap2xxx_sdrc_dll_is_unlocked(void); +u32 omap2xxx_sdrc_reprogram(u32 level, u32 force); + +#endif /* CONFIG_ARCH_OMAP2 */ +#endif /* __ASSEMBLER__ */ #endif |