| /* |
| * OMAP2/3 System Control Module register access |
| * |
| * Copyright (C) 2007, 2012 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 <linux/of_address.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/syscon.h> |
| |
| #include "soc.h" |
| #include "iomap.h" |
| #include "common.h" |
| #include "cm-regbits-34xx.h" |
| #include "prm-regbits-34xx.h" |
| #include "prm3xxx.h" |
| #include "cm3xxx.h" |
| #include "sdrc.h" |
| #include "pm.h" |
| #include "control.h" |
| #include "clock.h" |
| |
| /* Used by omap3_ctrl_save_padconf() */ |
| #define START_PADCONF_SAVE 0x2 |
| #define PADCONF_SAVE_DONE 0x1 |
| |
| static void __iomem *omap2_ctrl_base; |
| static s16 omap2_ctrl_offset; |
| static struct regmap *omap2_ctrl_syscon; |
| |
| #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_contents[2]; |
| u32 cm_contents[11]; |
| 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 */ |
| |
| void __init omap2_set_globals_control(void __iomem *ctrl) |
| { |
| omap2_ctrl_base = ctrl; |
| } |
| |
| u8 omap_ctrl_readb(u16 offset) |
| { |
| u32 val; |
| u8 byte_offset = offset & 0x3; |
| |
| val = omap_ctrl_readl(offset); |
| |
| return (val >> (byte_offset * 8)) & 0xff; |
| } |
| |
| u16 omap_ctrl_readw(u16 offset) |
| { |
| u32 val; |
| u16 byte_offset = offset & 0x2; |
| |
| val = omap_ctrl_readl(offset); |
| |
| return (val >> (byte_offset * 8)) & 0xffff; |
| } |
| |
| u32 omap_ctrl_readl(u16 offset) |
| { |
| u32 val; |
| |
| offset &= 0xfffc; |
| if (!omap2_ctrl_syscon) |
| val = readl_relaxed(omap2_ctrl_base + offset); |
| else |
| regmap_read(omap2_ctrl_syscon, omap2_ctrl_offset + offset, |
| &val); |
| |
| return val; |
| } |
| |
| void omap_ctrl_writeb(u8 val, u16 offset) |
| { |
| u32 tmp; |
| u8 byte_offset = offset & 0x3; |
| |
| tmp = omap_ctrl_readl(offset); |
| |
| tmp &= 0xffffffff ^ (0xff << (byte_offset * 8)); |
| tmp |= val << (byte_offset * 8); |
| |
| omap_ctrl_writel(tmp, offset); |
| } |
| |
| void omap_ctrl_writew(u16 val, u16 offset) |
| { |
| u32 tmp; |
| u8 byte_offset = offset & 0x2; |
| |
| tmp = omap_ctrl_readl(offset); |
| |
| tmp &= 0xffffffff ^ (0xffff << (byte_offset * 8)); |
| tmp |= val << (byte_offset * 8); |
| |
| omap_ctrl_writel(tmp, offset); |
| } |
| |
| void omap_ctrl_writel(u32 val, u16 offset) |
| { |
| offset &= 0xfffc; |
| if (!omap2_ctrl_syscon) |
| writel_relaxed(val, omap2_ctrl_base + offset); |
| else |
| regmap_write(omap2_ctrl_syscon, omap2_ctrl_offset + offset, |
| val); |
| } |
| |
| #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 |
| */ |
| writel_relaxed(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4)); |
| } |
| |
| #endif |
| |
| /** |
| * omap_ctrl_write_dsp_boot_addr - set boot address for a remote processor |
| * @bootaddr: physical address of the boot loader |
| * |
| * Set boot address for the boot loader of a supported processor |
| * when a power ON sequence occurs. |
| */ |
| void omap_ctrl_write_dsp_boot_addr(u32 bootaddr) |
| { |
| u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTADDR : |
| cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTADDR : |
| cpu_is_omap44xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR : |
| soc_is_omap54xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR : |
| 0; |
| |
| if (!offset) { |
| pr_err("%s: unsupported omap type\n", __func__); |
| return; |
| } |
| |
| omap_ctrl_writel(bootaddr, offset); |
| } |
| |
| /** |
| * omap_ctrl_write_dsp_boot_mode - set boot mode for a remote processor |
| * @bootmode: 8-bit value to pass to some boot code |
| * |
| * Sets boot mode for the boot loader of a supported processor |
| * when a power ON sequence occurs. |
| */ |
| void omap_ctrl_write_dsp_boot_mode(u8 bootmode) |
| { |
| u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTMOD : |
| cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTMOD : |
| 0; |
| |
| if (!offset) { |
| pr_err("%s: unsupported omap type\n", __func__); |
| return; |
| } |
| |
| omap_ctrl_writel(bootmode, offset); |
| } |
| |
| #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 (omap3xxx_prm_clear_global_cold_reset()) { |
| for ( ; offset <= max_offset; offset += 0x4) |
| writel_relaxed(0x0, (v_addr + 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(omap3_restore_3630); |
| else if (omap_rev() != OMAP3430_REV_ES3_0 && |
| omap_rev() != OMAP3430_REV_ES3_1 && |
| omap_rev() != OMAP3430_REV_ES3_1_2) |
| scratchpad_contents.public_restore_ptr = |
| virt_to_phys(omap3_restore); |
| else |
| scratchpad_contents.public_restore_ptr = |
| virt_to_phys(omap3_restore_es3); |
| |
| 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 */ |
| omap3_prm_save_scratchpad_contents(prcm_block_contents.prm_contents); |
| omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents); |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| /** |
| * omap3_ctrl_set_iva_bootmode_idle - sets the IVA2 bootmode to idle |
| * |
| * Sets the bootmode for IVA2 to idle. This is needed by the PM code to |
| * force disable IVA2 so that it does not prevent any low-power states. |
| */ |
| static void __init omap3_ctrl_set_iva_bootmode_idle(void) |
| { |
| omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE, |
| OMAP343X_CONTROL_IVA2_BOOTMOD); |
| } |
| |
| /** |
| * omap3_ctrl_setup_d2d_padconf - setup stacked modem pads for idle |
| * |
| * Sets up the pads controlling the stacked modem in such way that the |
| * device can enter idle. |
| */ |
| static void __init omap3_ctrl_setup_d2d_padconf(void) |
| { |
| u16 mask, padconf; |
| |
| /* |
| * In a stand alone OMAP3430 where there is not a stacked |
| * modem for the D2D Idle Ack and D2D MStandby must be pulled |
| * high. S CONTROL_PADCONF_SAD2D_IDLEACK and |
| * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. |
| */ |
| mask = (1 << 4) | (1 << 3); /* pull-up, enabled */ |
| padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY); |
| padconf |= mask; |
| omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY); |
| |
| padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK); |
| padconf |= mask; |
| omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK); |
| } |
| |
| /** |
| * omap3_ctrl_init - does static initializations for control module |
| * |
| * Initializes system control module. This sets up the sysconfig autoidle, |
| * and sets up modem and iva2 so that they can be idled properly. |
| */ |
| void __init omap3_ctrl_init(void) |
| { |
| omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG); |
| |
| omap3_ctrl_set_iva_bootmode_idle(); |
| |
| omap3_ctrl_setup_d2d_padconf(); |
| } |
| #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ |
| |
| struct control_init_data { |
| int index; |
| s16 offset; |
| }; |
| |
| static struct control_init_data ctrl_data = { |
| .index = TI_CLKM_CTRL, |
| }; |
| |
| static const struct control_init_data omap2_ctrl_data = { |
| .index = TI_CLKM_CTRL, |
| .offset = -OMAP2_CONTROL_GENERAL, |
| }; |
| |
| static const struct of_device_id omap_scrm_dt_match_table[] = { |
| { .compatible = "ti,am3-scm", .data = &ctrl_data }, |
| { .compatible = "ti,am4-scm", .data = &ctrl_data }, |
| { .compatible = "ti,omap2-scm", .data = &omap2_ctrl_data }, |
| { .compatible = "ti,omap3-scm", .data = &omap2_ctrl_data }, |
| { .compatible = "ti,dm816-scrm", .data = &ctrl_data }, |
| { .compatible = "ti,omap4-scm-core", .data = &ctrl_data }, |
| { .compatible = "ti,omap5-scm-core", .data = &ctrl_data }, |
| { .compatible = "ti,dra7-scm-core", .data = &ctrl_data }, |
| { } |
| }; |
| |
| /** |
| * omap2_control_base_init - initialize iomappings for the control driver |
| * |
| * Detects and initializes the iomappings for the control driver, based |
| * on the DT data. Returns 0 in success, negative error value |
| * otherwise. |
| */ |
| int __init omap2_control_base_init(void) |
| { |
| struct device_node *np; |
| const struct of_device_id *match; |
| struct control_init_data *data; |
| |
| for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) { |
| data = (struct control_init_data *)match->data; |
| |
| omap2_ctrl_base = of_iomap(np, 0); |
| if (!omap2_ctrl_base) |
| return -ENOMEM; |
| |
| omap2_ctrl_offset = data->offset; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * omap_control_init - low level init for the control driver |
| * |
| * Initializes the low level clock infrastructure for control driver. |
| * Returns 0 in success, negative error value in failure. |
| */ |
| int __init omap_control_init(void) |
| { |
| struct device_node *np, *scm_conf; |
| const struct of_device_id *match; |
| const struct omap_prcm_init_data *data; |
| int ret; |
| struct regmap *syscon; |
| |
| for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) { |
| data = match->data; |
| |
| /* |
| * Check if we have scm_conf node, if yes, use this to |
| * access clock registers. |
| */ |
| scm_conf = of_get_child_by_name(np, "scm_conf"); |
| |
| if (scm_conf) { |
| syscon = syscon_node_to_regmap(scm_conf); |
| |
| if (IS_ERR(syscon)) |
| return PTR_ERR(syscon); |
| |
| omap2_ctrl_syscon = syscon; |
| |
| if (of_get_child_by_name(scm_conf, "clocks")) { |
| ret = omap2_clk_provider_init(scm_conf, |
| data->index, |
| syscon, NULL); |
| if (ret) |
| return ret; |
| } |
| |
| iounmap(omap2_ctrl_base); |
| omap2_ctrl_base = NULL; |
| } else { |
| /* No scm_conf found, direct access */ |
| ret = omap2_clk_provider_init(np, data->index, NULL, |
| omap2_ctrl_base); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * omap3_control_legacy_iomap_init - legacy iomap init for clock providers |
| * |
| * Legacy iomap init for clock provider. Needed only by legacy boot mode, |
| * where the base addresses are not parsed from DT, but still required |
| * by the clock driver to be setup properly. |
| */ |
| void __init omap3_control_legacy_iomap_init(void) |
| { |
| omap2_clk_legacy_provider_init(TI_CLKM_SCRM, omap2_ctrl_base); |
| } |
