diff options
Diffstat (limited to 'arch/arm/mach-omap2/control.c')
| -rw-r--r-- | arch/arm/mach-omap2/control.c | 570 |
1 files changed, 570 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c new file mode 100644 index 00000000..da53ba39 --- /dev/null +++ b/arch/arm/mach-omap2/control.c @@ -0,0 +1,570 @@ +/* + * OMAP2/3 System Control Module register access + * + * Copyright (C) 2007 Texas Instruments, Inc. + * Copyright (C) 2007 Nokia Corporation + * + * Written by Paul Walmsley + * + * 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. + */ +#undef DEBUG + +#include <linux/kernel.h> +#include <linux/io.h> + +#include <plat/common.h> +#include <plat/sdrc.h> + +#include "cm-regbits-34xx.h" +#include "prm-regbits-34xx.h" +#include "prm2xxx_3xxx.h" +#include "cm2xxx_3xxx.h" +#include "sdrc.h" +#include "pm.h" +#include "control.h" + +/* Used by omap3_ctrl_save_padconf() */ +#define START_PADCONF_SAVE 0x2 +#define PADCONF_SAVE_DONE 0x1 + +static void __iomem *omap2_ctrl_base; +static void __iomem *omap4_ctrl_pad_base; + +#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) +struct omap3_scratchpad { + u32 boot_config_ptr; + u32 public_restore_ptr; + u32 secure_ram_restore_ptr; + u32 sdrc_module_semaphore; + u32 prcm_block_offset; + u32 sdrc_block_offset; +}; + +struct omap3_scratchpad_prcm_block { + u32 prm_clksrc_ctrl; + u32 prm_clksel; + u32 cm_clksel_core; + u32 cm_clksel_wkup; + u32 cm_clken_pll; + u32 cm_autoidle_pll; + u32 cm_clksel1_pll; + u32 cm_clksel2_pll; + u32 cm_clksel3_pll; + u32 cm_clken_pll_mpu; + u32 cm_autoidle_pll_mpu; + u32 cm_clksel1_pll_mpu; + u32 cm_clksel2_pll_mpu; + u32 prcm_block_size; +}; + +struct omap3_scratchpad_sdrc_block { + u16 sysconfig; + u16 cs_cfg; + u16 sharing; + u16 err_type; + u32 dll_a_ctrl; + u32 dll_b_ctrl; + u32 power; + u32 cs_0; + u32 mcfg_0; + u16 mr_0; + u16 emr_1_0; + u16 emr_2_0; + u16 emr_3_0; + u32 actim_ctrla_0; + u32 actim_ctrlb_0; + u32 rfr_ctrl_0; + u32 cs_1; + u32 mcfg_1; + u16 mr_1; + u16 emr_1_1; + u16 emr_2_1; + u16 emr_3_1; + u32 actim_ctrla_1; + u32 actim_ctrlb_1; + u32 rfr_ctrl_1; + u16 dcdl_1_ctrl; + u16 dcdl_2_ctrl; + u32 flags; + u32 block_size; +}; + +void *omap3_secure_ram_storage; + +/* + * This is used to store ARM registers in SDRAM before attempting + * an MPU OFF. The save and restore happens from the SRAM sleep code. + * The address is stored in scratchpad, so that it can be used + * during the restore path. + */ +u32 omap3_arm_context[128]; + +struct omap3_control_regs { + u32 sysconfig; + u32 devconf0; + u32 mem_dftrw0; + u32 mem_dftrw1; + u32 msuspendmux_0; + u32 msuspendmux_1; + u32 msuspendmux_2; + u32 msuspendmux_3; + u32 msuspendmux_4; + u32 msuspendmux_5; + u32 sec_ctrl; + u32 devconf1; + u32 csirxfe; + u32 iva2_bootaddr; + u32 iva2_bootmod; + u32 debobs_0; + u32 debobs_1; + u32 debobs_2; + u32 debobs_3; + u32 debobs_4; + u32 debobs_5; + u32 debobs_6; + u32 debobs_7; + u32 debobs_8; + u32 prog_io0; + u32 prog_io1; + u32 dss_dpll_spreading; + u32 core_dpll_spreading; + u32 per_dpll_spreading; + u32 usbhost_dpll_spreading; + u32 pbias_lite; + u32 temp_sensor; + u32 sramldo4; + u32 sramldo5; + u32 csi; + u32 padconf_sys_nirq; +}; + +static struct omap3_control_regs control_context; +#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ + +#define OMAP_CTRL_REGADDR(reg) (omap2_ctrl_base + (reg)) +#define OMAP4_CTRL_PAD_REGADDR(reg) (omap4_ctrl_pad_base + (reg)) + +void __init omap2_set_globals_control(struct omap_globals *omap2_globals) +{ + /* Static mapping, never released */ + if (omap2_globals->ctrl) { + omap2_ctrl_base = ioremap(omap2_globals->ctrl, SZ_4K); + WARN_ON(!omap2_ctrl_base); + } + + /* Static mapping, never released */ + if (omap2_globals->ctrl_pad) { + omap4_ctrl_pad_base = ioremap(omap2_globals->ctrl_pad, SZ_4K); + WARN_ON(!omap4_ctrl_pad_base); + } +} + +void __iomem *omap_ctrl_base_get(void) +{ + return omap2_ctrl_base; +} + +u8 omap_ctrl_readb(u16 offset) +{ + return __raw_readb(OMAP_CTRL_REGADDR(offset)); +} + +u16 omap_ctrl_readw(u16 offset) +{ + return __raw_readw(OMAP_CTRL_REGADDR(offset)); +} + +u32 omap_ctrl_readl(u16 offset) +{ + return __raw_readl(OMAP_CTRL_REGADDR(offset)); +} + +void omap_ctrl_writeb(u8 val, u16 offset) +{ + __raw_writeb(val, OMAP_CTRL_REGADDR(offset)); +} + +void omap_ctrl_writew(u16 val, u16 offset) +{ + __raw_writew(val, OMAP_CTRL_REGADDR(offset)); +} + +void omap_ctrl_writel(u32 val, u16 offset) +{ + __raw_writel(val, OMAP_CTRL_REGADDR(offset)); +} + +/* + * On OMAP4 control pad are not addressable from control + * core base. So the common omap_ctrl_read/write APIs breaks + * Hence export separate APIs to manage the omap4 pad control + * registers. This APIs will work only for OMAP4 + */ + +u32 omap4_ctrl_pad_readl(u16 offset) +{ + return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset)); +} + +void omap4_ctrl_pad_writel(u32 val, u16 offset) +{ + __raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset)); +} + +#ifdef CONFIG_ARCH_OMAP3 + +/** + * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot + * @bootmode: 8-bit value to pass to some boot code + * + * Set the bootmode in the scratchpad RAM. This is used after the + * system restarts. Not sure what actually uses this - it may be the + * bootloader, rather than the boot ROM - contrary to the preserved + * comment below. No return value. + */ +void omap3_ctrl_write_boot_mode(u8 bootmode) +{ + u32 l; + + l = ('B' << 24) | ('M' << 16) | bootmode; + + /* + * Reserve the first word in scratchpad for communicating + * with the boot ROM. A pointer to a data structure + * describing the boot process can be stored there, + * cf. OMAP34xx TRM, Initialization / Software Booting + * Configuration. + * + * XXX This should use some omap_ctrl_writel()-type function + */ + __raw_writel(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4)); +} + +#endif + +#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) +/* + * Clears the scratchpad contents in case of cold boot- + * called during bootup + */ +void omap3_clear_scratchpad_contents(void) +{ + u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET; + void __iomem *v_addr; + u32 offset = 0; + v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM); + if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) & + OMAP3430_GLOBAL_COLD_RST_MASK) { + for ( ; offset <= max_offset; offset += 0x4) + __raw_writel(0x0, (v_addr + offset)); + omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK, + OMAP3430_GR_MOD, + OMAP3_PRM_RSTST_OFFSET); + } +} + +/* Populate the scratchpad structure with restore structure */ +void omap3_save_scratchpad_contents(void) +{ + void __iomem *scratchpad_address; + u32 arm_context_addr; + struct omap3_scratchpad scratchpad_contents; + struct omap3_scratchpad_prcm_block prcm_block_contents; + struct omap3_scratchpad_sdrc_block sdrc_block_contents; + + /* + * Populate the Scratchpad contents + * + * The "get_*restore_pointer" functions are used to provide a + * physical restore address where the ROM code jumps while waking + * up from MPU OFF/OSWR state. + * The restore pointer is stored into the scratchpad. + */ + scratchpad_contents.boot_config_ptr = 0x0; + if (cpu_is_omap3630()) + scratchpad_contents.public_restore_ptr = + virt_to_phys(get_omap3630_restore_pointer()); + else if (omap_rev() != OMAP3430_REV_ES3_0 && + omap_rev() != OMAP3430_REV_ES3_1) + scratchpad_contents.public_restore_ptr = + virt_to_phys(get_restore_pointer()); + else + scratchpad_contents.public_restore_ptr = + virt_to_phys(get_es3_restore_pointer()); + if (omap_type() == OMAP2_DEVICE_TYPE_GP) + scratchpad_contents.secure_ram_restore_ptr = 0x0; + else + scratchpad_contents.secure_ram_restore_ptr = + (u32) __pa(omap3_secure_ram_storage); + scratchpad_contents.sdrc_module_semaphore = 0x0; + scratchpad_contents.prcm_block_offset = 0x2C; + scratchpad_contents.sdrc_block_offset = 0x64; + + /* Populate the PRCM block contents */ + prcm_block_contents.prm_clksrc_ctrl = + omap2_prm_read_mod_reg(OMAP3430_GR_MOD, + OMAP3_PRM_CLKSRC_CTRL_OFFSET); + prcm_block_contents.prm_clksel = + omap2_prm_read_mod_reg(OMAP3430_CCR_MOD, + OMAP3_PRM_CLKSEL_OFFSET); + prcm_block_contents.cm_clksel_core = + omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL); + prcm_block_contents.cm_clksel_wkup = + omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL); + prcm_block_contents.cm_clken_pll = + omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN); + /* + * As per erratum i671, ROM code does not respect the PER DPLL + * programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1. + * Then, in anycase, clear these bits to avoid extra latencies. + */ + prcm_block_contents.cm_autoidle_pll = + omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) & + ~OMAP3430_AUTO_PERIPH_DPLL_MASK; + prcm_block_contents.cm_clksel1_pll = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL); + prcm_block_contents.cm_clksel2_pll = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL); + prcm_block_contents.cm_clksel3_pll = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3); + prcm_block_contents.cm_clken_pll_mpu = + omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL); + prcm_block_contents.cm_autoidle_pll_mpu = + omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL); + prcm_block_contents.cm_clksel1_pll_mpu = + omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL); + prcm_block_contents.cm_clksel2_pll_mpu = + omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL); + prcm_block_contents.prcm_block_size = 0x0; + + /* Populate the SDRC block contents */ + sdrc_block_contents.sysconfig = + (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF); + sdrc_block_contents.cs_cfg = + (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF); + sdrc_block_contents.sharing = + (sdrc_read_reg(SDRC_SHARING) & 0xFFFF); + sdrc_block_contents.err_type = + (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF); + sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL); + sdrc_block_contents.dll_b_ctrl = 0x0; + /* + * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should + * be programed to issue automatic self refresh on timeout + * of AUTO_CNT = 1 prior to any transition to OFF mode. + */ + if ((omap_type() != OMAP2_DEVICE_TYPE_GP) + && (omap_rev() >= OMAP3430_REV_ES3_0)) + sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) & + ~(SDRC_POWER_AUTOCOUNT_MASK| + SDRC_POWER_CLKCTRL_MASK)) | + (1 << SDRC_POWER_AUTOCOUNT_SHIFT) | + SDRC_SELF_REFRESH_ON_AUTOCOUNT; + else + sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER); + + sdrc_block_contents.cs_0 = 0x0; + sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0); + sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF); + sdrc_block_contents.emr_1_0 = 0x0; + sdrc_block_contents.emr_2_0 = 0x0; + sdrc_block_contents.emr_3_0 = 0x0; + sdrc_block_contents.actim_ctrla_0 = + sdrc_read_reg(SDRC_ACTIM_CTRL_A_0); + sdrc_block_contents.actim_ctrlb_0 = + sdrc_read_reg(SDRC_ACTIM_CTRL_B_0); + sdrc_block_contents.rfr_ctrl_0 = + sdrc_read_reg(SDRC_RFR_CTRL_0); + sdrc_block_contents.cs_1 = 0x0; + sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1); + sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF; + sdrc_block_contents.emr_1_1 = 0x0; + sdrc_block_contents.emr_2_1 = 0x0; + sdrc_block_contents.emr_3_1 = 0x0; + sdrc_block_contents.actim_ctrla_1 = + sdrc_read_reg(SDRC_ACTIM_CTRL_A_1); + sdrc_block_contents.actim_ctrlb_1 = + sdrc_read_reg(SDRC_ACTIM_CTRL_B_1); + sdrc_block_contents.rfr_ctrl_1 = + sdrc_read_reg(SDRC_RFR_CTRL_1); + sdrc_block_contents.dcdl_1_ctrl = 0x0; + sdrc_block_contents.dcdl_2_ctrl = 0x0; + sdrc_block_contents.flags = 0x0; + sdrc_block_contents.block_size = 0x0; + + arm_context_addr = virt_to_phys(omap3_arm_context); + + /* Copy all the contents to the scratchpad location */ + scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD); + memcpy_toio(scratchpad_address, &scratchpad_contents, + sizeof(scratchpad_contents)); + /* Scratchpad contents being 32 bits, a divide by 4 done here */ + memcpy_toio(scratchpad_address + + scratchpad_contents.prcm_block_offset, + &prcm_block_contents, sizeof(prcm_block_contents)); + memcpy_toio(scratchpad_address + + scratchpad_contents.sdrc_block_offset, + &sdrc_block_contents, sizeof(sdrc_block_contents)); + /* + * Copies the address of the location in SDRAM where ARM + * registers get saved during a MPU OFF transition. + */ + memcpy_toio(scratchpad_address + + scratchpad_contents.sdrc_block_offset + + sizeof(sdrc_block_contents), &arm_context_addr, 4); +} + +void omap3_control_save_context(void) +{ + control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG); + control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); + control_context.mem_dftrw0 = + omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0); + control_context.mem_dftrw1 = + omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1); + control_context.msuspendmux_0 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0); + control_context.msuspendmux_1 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1); + control_context.msuspendmux_2 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2); + control_context.msuspendmux_3 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3); + control_context.msuspendmux_4 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4); + control_context.msuspendmux_5 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5); + control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL); + control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); + control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE); + control_context.iva2_bootaddr = + omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR); + control_context.iva2_bootmod = + omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD); + control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0)); + control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1)); + control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2)); + control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3)); + control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4)); + control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5)); + control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6)); + control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7)); + control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8)); + control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0); + control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1); + control_context.dss_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING); + control_context.core_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING); + control_context.per_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING); + control_context.usbhost_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); + control_context.pbias_lite = + omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE); + control_context.temp_sensor = + omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR); + control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4); + control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5); + control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI); + control_context.padconf_sys_nirq = + omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ); + return; +} + +void omap3_control_restore_context(void) +{ + omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG); + omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0); + omap_ctrl_writel(control_context.mem_dftrw0, + OMAP343X_CONTROL_MEM_DFTRW0); + omap_ctrl_writel(control_context.mem_dftrw1, + OMAP343X_CONTROL_MEM_DFTRW1); + omap_ctrl_writel(control_context.msuspendmux_0, + OMAP2_CONTROL_MSUSPENDMUX_0); + omap_ctrl_writel(control_context.msuspendmux_1, + OMAP2_CONTROL_MSUSPENDMUX_1); + omap_ctrl_writel(control_context.msuspendmux_2, + OMAP2_CONTROL_MSUSPENDMUX_2); + omap_ctrl_writel(control_context.msuspendmux_3, + OMAP2_CONTROL_MSUSPENDMUX_3); + omap_ctrl_writel(control_context.msuspendmux_4, + OMAP2_CONTROL_MSUSPENDMUX_4); + omap_ctrl_writel(control_context.msuspendmux_5, + OMAP2_CONTROL_MSUSPENDMUX_5); + omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL); + omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1); + omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE); + omap_ctrl_writel(control_context.iva2_bootaddr, + OMAP343X_CONTROL_IVA2_BOOTADDR); + omap_ctrl_writel(control_context.iva2_bootmod, + OMAP343X_CONTROL_IVA2_BOOTMOD); + omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0)); + omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1)); + omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2)); + omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3)); + omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4)); + omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5)); + omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6)); + omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7)); + omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8)); + omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0); + omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1); + omap_ctrl_writel(control_context.dss_dpll_spreading, + OMAP343X_CONTROL_DSS_DPLL_SPREADING); + omap_ctrl_writel(control_context.core_dpll_spreading, + OMAP343X_CONTROL_CORE_DPLL_SPREADING); + omap_ctrl_writel(control_context.per_dpll_spreading, + OMAP343X_CONTROL_PER_DPLL_SPREADING); + omap_ctrl_writel(control_context.usbhost_dpll_spreading, + OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); + omap_ctrl_writel(control_context.pbias_lite, + OMAP343X_CONTROL_PBIAS_LITE); + omap_ctrl_writel(control_context.temp_sensor, + OMAP343X_CONTROL_TEMP_SENSOR); + omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4); + omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5); + omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI); + omap_ctrl_writel(control_context.padconf_sys_nirq, + OMAP343X_CONTROL_PADCONF_SYSNIRQ); + return; +} + +void omap3630_ctrl_disable_rta(void) +{ + if (!cpu_is_omap3630()) + return; + omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL); +} + +/** + * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM + * + * Tell the SCM to start saving the padconf registers, then wait for + * the process to complete. Returns 0 unconditionally, although it + * should also eventually be able to return -ETIMEDOUT, if the save + * does not complete. + * + * XXX This function is missing a timeout. What should it be? + */ +int omap3_ctrl_save_padconf(void) +{ + u32 cpo; + + /* Save the padconf registers */ + cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF); + cpo |= START_PADCONF_SAVE; + omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF); + + /* wait for the save to complete */ + while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS) + & PADCONF_SAVE_DONE)) + udelay(1); + + return 0; +} + +#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ |