| /* |
| * OMAP3xxx CM module functions |
| * |
| * Copyright (C) 2009 Nokia Corporation |
| * Copyright (C) 2008-2010, 2012 Texas Instruments, Inc. |
| * Paul Walmsley |
| * Rajendra Nayak <rnayak@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/kernel.h> |
| #include <linux/types.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| |
| #include "soc.h" |
| #include "iomap.h" |
| #include "common.h" |
| #include "prm2xxx_3xxx.h" |
| #include "cm.h" |
| #include "cm3xxx.h" |
| #include "cm-regbits-34xx.h" |
| #include "clockdomain.h" |
| |
| static const u8 omap3xxx_cm_idlest_offs[] = { |
| CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3 |
| }; |
| |
| /* |
| * |
| */ |
| |
| static void _write_clktrctrl(u8 c, s16 module, u32 mask) |
| { |
| u32 v; |
| |
| v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL); |
| v &= ~mask; |
| v |= c << __ffs(mask); |
| omap2_cm_write_mod_reg(v, module, OMAP2_CM_CLKSTCTRL); |
| } |
| |
| bool omap3xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask) |
| { |
| u32 v; |
| |
| v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL); |
| v &= mask; |
| v >>= __ffs(mask); |
| |
| return (v == OMAP34XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0; |
| } |
| |
| void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask) |
| { |
| _write_clktrctrl(OMAP34XX_CLKSTCTRL_ENABLE_AUTO, module, mask); |
| } |
| |
| void omap3xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask) |
| { |
| _write_clktrctrl(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, module, mask); |
| } |
| |
| void omap3xxx_cm_clkdm_force_sleep(s16 module, u32 mask) |
| { |
| _write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, module, mask); |
| } |
| |
| void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask) |
| { |
| _write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, module, mask); |
| } |
| |
| /* |
| * |
| */ |
| |
| /** |
| * omap3xxx_cm_wait_module_ready - wait for a module to leave idle or standby |
| * @prcm_mod: PRCM module offset |
| * @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3) |
| * @idlest_shift: shift of the bit in the CM_IDLEST* register to check |
| * |
| * Wait for the PRCM to indicate that the module identified by |
| * (@prcm_mod, @idlest_id, @idlest_shift) is clocked. Return 0 upon |
| * success or -EBUSY if the module doesn't enable in time. |
| */ |
| int omap3xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift) |
| { |
| int ena = 0, i = 0; |
| u8 cm_idlest_reg; |
| u32 mask; |
| |
| if (!idlest_id || (idlest_id > ARRAY_SIZE(omap3xxx_cm_idlest_offs))) |
| return -EINVAL; |
| |
| cm_idlest_reg = omap3xxx_cm_idlest_offs[idlest_id - 1]; |
| |
| mask = 1 << idlest_shift; |
| ena = 0; |
| |
| omap_test_timeout(((omap2_cm_read_mod_reg(prcm_mod, cm_idlest_reg) & |
| mask) == ena), MAX_MODULE_READY_TIME, i); |
| |
| return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY; |
| } |
| |
| /** |
| * omap3xxx_cm_split_idlest_reg - split CM_IDLEST reg addr into its components |
| * @idlest_reg: CM_IDLEST* virtual address |
| * @prcm_inst: pointer to an s16 to return the PRCM instance offset |
| * @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID |
| * |
| * XXX This function is only needed until absolute register addresses are |
| * removed from the OMAP struct clk records. |
| */ |
| int omap3xxx_cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst, |
| u8 *idlest_reg_id) |
| { |
| unsigned long offs; |
| u8 idlest_offs; |
| int i; |
| |
| if (idlest_reg < (cm_base + OMAP3430_IVA2_MOD) || |
| idlest_reg > (cm_base + 0x1ffff)) |
| return -EINVAL; |
| |
| idlest_offs = (unsigned long)idlest_reg & 0xff; |
| for (i = 0; i < ARRAY_SIZE(omap3xxx_cm_idlest_offs); i++) { |
| if (idlest_offs == omap3xxx_cm_idlest_offs[i]) { |
| *idlest_reg_id = i + 1; |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(omap3xxx_cm_idlest_offs)) |
| return -EINVAL; |
| |
| offs = idlest_reg - cm_base; |
| offs &= 0xff00; |
| *prcm_inst = offs; |
| |
| return 0; |
| } |
| |
| /* Clockdomain low-level operations */ |
| |
| static int omap3xxx_clkdm_add_sleepdep(struct clockdomain *clkdm1, |
| struct clockdomain *clkdm2) |
| { |
| omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit), |
| clkdm1->pwrdm.ptr->prcm_offs, |
| OMAP3430_CM_SLEEPDEP); |
| return 0; |
| } |
| |
| static int omap3xxx_clkdm_del_sleepdep(struct clockdomain *clkdm1, |
| struct clockdomain *clkdm2) |
| { |
| omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit), |
| clkdm1->pwrdm.ptr->prcm_offs, |
| OMAP3430_CM_SLEEPDEP); |
| return 0; |
| } |
| |
| static int omap3xxx_clkdm_read_sleepdep(struct clockdomain *clkdm1, |
| struct clockdomain *clkdm2) |
| { |
| return omap2_cm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, |
| OMAP3430_CM_SLEEPDEP, |
| (1 << clkdm2->dep_bit)); |
| } |
| |
| static int omap3xxx_clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) |
| { |
| struct clkdm_dep *cd; |
| u32 mask = 0; |
| |
| for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) { |
| if (!cd->clkdm) |
| continue; /* only happens if data is erroneous */ |
| |
| mask |= 1 << cd->clkdm->dep_bit; |
| cd->sleepdep_usecount = 0; |
| } |
| omap2_cm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, |
| OMAP3430_CM_SLEEPDEP); |
| return 0; |
| } |
| |
| static int omap3xxx_clkdm_sleep(struct clockdomain *clkdm) |
| { |
| omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| return 0; |
| } |
| |
| static int omap3xxx_clkdm_wakeup(struct clockdomain *clkdm) |
| { |
| omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| return 0; |
| } |
| |
| static void omap3xxx_clkdm_allow_idle(struct clockdomain *clkdm) |
| { |
| if (clkdm->usecount > 0) |
| clkdm_add_autodeps(clkdm); |
| |
| omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| } |
| |
| static void omap3xxx_clkdm_deny_idle(struct clockdomain *clkdm) |
| { |
| omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| |
| if (clkdm->usecount > 0) |
| clkdm_del_autodeps(clkdm); |
| } |
| |
| static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm) |
| { |
| bool hwsup = false; |
| |
| if (!clkdm->clktrctrl_mask) |
| return 0; |
| |
| /* |
| * The CLKDM_MISSING_IDLE_REPORTING flag documentation has |
| * more details on the unpleasant problem this is working |
| * around |
| */ |
| if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) && |
| (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) { |
| omap3xxx_clkdm_wakeup(clkdm); |
| return 0; |
| } |
| |
| hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| |
| if (hwsup) { |
| /* Disable HW transitions when we are changing deps */ |
| omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| clkdm_add_autodeps(clkdm); |
| omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| } else { |
| if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) |
| omap3xxx_clkdm_wakeup(clkdm); |
| } |
| |
| return 0; |
| } |
| |
| static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm) |
| { |
| bool hwsup = false; |
| |
| if (!clkdm->clktrctrl_mask) |
| return 0; |
| |
| /* |
| * The CLKDM_MISSING_IDLE_REPORTING flag documentation has |
| * more details on the unpleasant problem this is working |
| * around |
| */ |
| if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING && |
| !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) { |
| omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| return 0; |
| } |
| |
| hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| |
| if (hwsup) { |
| /* Disable HW transitions when we are changing deps */ |
| omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| clkdm_del_autodeps(clkdm); |
| omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, |
| clkdm->clktrctrl_mask); |
| } else { |
| if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP) |
| omap3xxx_clkdm_sleep(clkdm); |
| } |
| |
| return 0; |
| } |
| |
| struct clkdm_ops omap3_clkdm_operations = { |
| .clkdm_add_wkdep = omap2_clkdm_add_wkdep, |
| .clkdm_del_wkdep = omap2_clkdm_del_wkdep, |
| .clkdm_read_wkdep = omap2_clkdm_read_wkdep, |
| .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps, |
| .clkdm_add_sleepdep = omap3xxx_clkdm_add_sleepdep, |
| .clkdm_del_sleepdep = omap3xxx_clkdm_del_sleepdep, |
| .clkdm_read_sleepdep = omap3xxx_clkdm_read_sleepdep, |
| .clkdm_clear_all_sleepdeps = omap3xxx_clkdm_clear_all_sleepdeps, |
| .clkdm_sleep = omap3xxx_clkdm_sleep, |
| .clkdm_wakeup = omap3xxx_clkdm_wakeup, |
| .clkdm_allow_idle = omap3xxx_clkdm_allow_idle, |
| .clkdm_deny_idle = omap3xxx_clkdm_deny_idle, |
| .clkdm_clk_enable = omap3xxx_clkdm_clk_enable, |
| .clkdm_clk_disable = omap3xxx_clkdm_clk_disable, |
| }; |
| |
| /* |
| * Context save/restore code - OMAP3 only |
| */ |
| struct omap3_cm_regs { |
| u32 iva2_cm_clksel1; |
| u32 iva2_cm_clksel2; |
| u32 cm_sysconfig; |
| u32 sgx_cm_clksel; |
| u32 dss_cm_clksel; |
| u32 cam_cm_clksel; |
| u32 per_cm_clksel; |
| u32 emu_cm_clksel; |
| u32 emu_cm_clkstctrl; |
| u32 pll_cm_autoidle; |
| u32 pll_cm_autoidle2; |
| u32 pll_cm_clksel4; |
| u32 pll_cm_clksel5; |
| u32 pll_cm_clken2; |
| u32 cm_polctrl; |
| u32 iva2_cm_fclken; |
| u32 iva2_cm_clken_pll; |
| u32 core_cm_fclken1; |
| u32 core_cm_fclken3; |
| u32 sgx_cm_fclken; |
| u32 wkup_cm_fclken; |
| u32 dss_cm_fclken; |
| u32 cam_cm_fclken; |
| u32 per_cm_fclken; |
| u32 usbhost_cm_fclken; |
| u32 core_cm_iclken1; |
| u32 core_cm_iclken2; |
| u32 core_cm_iclken3; |
| u32 sgx_cm_iclken; |
| u32 wkup_cm_iclken; |
| u32 dss_cm_iclken; |
| u32 cam_cm_iclken; |
| u32 per_cm_iclken; |
| u32 usbhost_cm_iclken; |
| u32 iva2_cm_autoidle2; |
| u32 mpu_cm_autoidle2; |
| u32 iva2_cm_clkstctrl; |
| u32 mpu_cm_clkstctrl; |
| u32 core_cm_clkstctrl; |
| u32 sgx_cm_clkstctrl; |
| u32 dss_cm_clkstctrl; |
| u32 cam_cm_clkstctrl; |
| u32 per_cm_clkstctrl; |
| u32 neon_cm_clkstctrl; |
| u32 usbhost_cm_clkstctrl; |
| u32 core_cm_autoidle1; |
| u32 core_cm_autoidle2; |
| u32 core_cm_autoidle3; |
| u32 wkup_cm_autoidle; |
| u32 dss_cm_autoidle; |
| u32 cam_cm_autoidle; |
| u32 per_cm_autoidle; |
| u32 usbhost_cm_autoidle; |
| u32 sgx_cm_sleepdep; |
| u32 dss_cm_sleepdep; |
| u32 cam_cm_sleepdep; |
| u32 per_cm_sleepdep; |
| u32 usbhost_cm_sleepdep; |
| u32 cm_clkout_ctrl; |
| }; |
| |
| static struct omap3_cm_regs cm_context; |
| |
| void omap3_cm_save_context(void) |
| { |
| cm_context.iva2_cm_clksel1 = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL1); |
| cm_context.iva2_cm_clksel2 = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL2); |
| cm_context.cm_sysconfig = __raw_readl(OMAP3430_CM_SYSCONFIG); |
| cm_context.sgx_cm_clksel = |
| omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_CLKSEL); |
| cm_context.dss_cm_clksel = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_CLKSEL); |
| cm_context.cam_cm_clksel = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_CLKSEL); |
| cm_context.per_cm_clksel = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_CLKSEL); |
| cm_context.emu_cm_clksel = |
| omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, CM_CLKSEL1); |
| cm_context.emu_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, OMAP2_CM_CLKSTCTRL); |
| /* |
| * As per erratum i671, ROM code does not respect the PER DPLL |
| * programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1. |
| * In this case, even though this register has been saved in |
| * scratchpad contents, we need to restore AUTO_PERIPH_DPLL |
| * by ourselves. So, we need to save it anyway. |
| */ |
| cm_context.pll_cm_autoidle = |
| omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE); |
| cm_context.pll_cm_autoidle2 = |
| omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE2); |
| cm_context.pll_cm_clksel4 = |
| omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL4); |
| cm_context.pll_cm_clksel5 = |
| omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL5); |
| cm_context.pll_cm_clken2 = |
| omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKEN2); |
| cm_context.cm_polctrl = __raw_readl(OMAP3430_CM_POLCTRL); |
| cm_context.iva2_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_FCLKEN); |
| cm_context.iva2_cm_clken_pll = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKEN_PLL); |
| cm_context.core_cm_fclken1 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); |
| cm_context.core_cm_fclken3 = |
| omap2_cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3); |
| cm_context.sgx_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_FCLKEN); |
| cm_context.wkup_cm_fclken = |
| omap2_cm_read_mod_reg(WKUP_MOD, CM_FCLKEN); |
| cm_context.dss_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_FCLKEN); |
| cm_context.cam_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_FCLKEN); |
| cm_context.per_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN); |
| cm_context.usbhost_cm_fclken = |
| omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN); |
| cm_context.core_cm_iclken1 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN1); |
| cm_context.core_cm_iclken2 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN2); |
| cm_context.core_cm_iclken3 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN3); |
| cm_context.sgx_cm_iclken = |
| omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_ICLKEN); |
| cm_context.wkup_cm_iclken = |
| omap2_cm_read_mod_reg(WKUP_MOD, CM_ICLKEN); |
| cm_context.dss_cm_iclken = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_ICLKEN); |
| cm_context.cam_cm_iclken = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_ICLKEN); |
| cm_context.per_cm_iclken = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN); |
| cm_context.usbhost_cm_iclken = |
| omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_ICLKEN); |
| cm_context.iva2_cm_autoidle2 = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_AUTOIDLE2); |
| cm_context.mpu_cm_autoidle2 = |
| omap2_cm_read_mod_reg(MPU_MOD, CM_AUTOIDLE2); |
| cm_context.iva2_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.mpu_cm_clkstctrl = |
| omap2_cm_read_mod_reg(MPU_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.core_cm_clkstctrl = |
| omap2_cm_read_mod_reg(CORE_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.sgx_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.dss_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.cam_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.per_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.neon_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430_NEON_MOD, OMAP2_CM_CLKSTCTRL); |
| cm_context.usbhost_cm_clkstctrl = |
| omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| cm_context.core_cm_autoidle1 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE1); |
| cm_context.core_cm_autoidle2 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE2); |
| cm_context.core_cm_autoidle3 = |
| omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE3); |
| cm_context.wkup_cm_autoidle = |
| omap2_cm_read_mod_reg(WKUP_MOD, CM_AUTOIDLE); |
| cm_context.dss_cm_autoidle = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_AUTOIDLE); |
| cm_context.cam_cm_autoidle = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_AUTOIDLE); |
| cm_context.per_cm_autoidle = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE); |
| cm_context.usbhost_cm_autoidle = |
| omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE); |
| cm_context.sgx_cm_sleepdep = |
| omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| cm_context.dss_cm_sleepdep = |
| omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP3430_CM_SLEEPDEP); |
| cm_context.cam_cm_sleepdep = |
| omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP3430_CM_SLEEPDEP); |
| cm_context.per_cm_sleepdep = |
| omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP3430_CM_SLEEPDEP); |
| cm_context.usbhost_cm_sleepdep = |
| omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| cm_context.cm_clkout_ctrl = |
| omap2_cm_read_mod_reg(OMAP3430_CCR_MOD, |
| OMAP3_CM_CLKOUT_CTRL_OFFSET); |
| } |
| |
| void omap3_cm_restore_context(void) |
| { |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel1, OMAP3430_IVA2_MOD, |
| CM_CLKSEL1); |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel2, OMAP3430_IVA2_MOD, |
| CM_CLKSEL2); |
| __raw_writel(cm_context.cm_sysconfig, OMAP3430_CM_SYSCONFIG); |
| omap2_cm_write_mod_reg(cm_context.sgx_cm_clksel, OMAP3430ES2_SGX_MOD, |
| CM_CLKSEL); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_clksel, OMAP3430_DSS_MOD, |
| CM_CLKSEL); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_clksel, OMAP3430_CAM_MOD, |
| CM_CLKSEL); |
| omap2_cm_write_mod_reg(cm_context.per_cm_clksel, OMAP3430_PER_MOD, |
| CM_CLKSEL); |
| omap2_cm_write_mod_reg(cm_context.emu_cm_clksel, OMAP3430_EMU_MOD, |
| CM_CLKSEL1); |
| omap2_cm_write_mod_reg(cm_context.emu_cm_clkstctrl, OMAP3430_EMU_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| /* |
| * As per erratum i671, ROM code does not respect the PER DPLL |
| * programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1. |
| * In this case, we need to restore AUTO_PERIPH_DPLL by ourselves. |
| */ |
| omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle, PLL_MOD, |
| CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle2, PLL_MOD, |
| CM_AUTOIDLE2); |
| omap2_cm_write_mod_reg(cm_context.pll_cm_clksel4, PLL_MOD, |
| OMAP3430ES2_CM_CLKSEL4); |
| omap2_cm_write_mod_reg(cm_context.pll_cm_clksel5, PLL_MOD, |
| OMAP3430ES2_CM_CLKSEL5); |
| omap2_cm_write_mod_reg(cm_context.pll_cm_clken2, PLL_MOD, |
| OMAP3430ES2_CM_CLKEN2); |
| __raw_writel(cm_context.cm_polctrl, OMAP3430_CM_POLCTRL); |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_fclken, OMAP3430_IVA2_MOD, |
| CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_clken_pll, OMAP3430_IVA2_MOD, |
| OMAP3430_CM_CLKEN_PLL); |
| omap2_cm_write_mod_reg(cm_context.core_cm_fclken1, CORE_MOD, |
| CM_FCLKEN1); |
| omap2_cm_write_mod_reg(cm_context.core_cm_fclken3, CORE_MOD, |
| OMAP3430ES2_CM_FCLKEN3); |
| omap2_cm_write_mod_reg(cm_context.sgx_cm_fclken, OMAP3430ES2_SGX_MOD, |
| CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.wkup_cm_fclken, WKUP_MOD, CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_fclken, OMAP3430_DSS_MOD, |
| CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_fclken, OMAP3430_CAM_MOD, |
| CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.per_cm_fclken, OMAP3430_PER_MOD, |
| CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.usbhost_cm_fclken, |
| OMAP3430ES2_USBHOST_MOD, CM_FCLKEN); |
| omap2_cm_write_mod_reg(cm_context.core_cm_iclken1, CORE_MOD, |
| CM_ICLKEN1); |
| omap2_cm_write_mod_reg(cm_context.core_cm_iclken2, CORE_MOD, |
| CM_ICLKEN2); |
| omap2_cm_write_mod_reg(cm_context.core_cm_iclken3, CORE_MOD, |
| CM_ICLKEN3); |
| omap2_cm_write_mod_reg(cm_context.sgx_cm_iclken, OMAP3430ES2_SGX_MOD, |
| CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.wkup_cm_iclken, WKUP_MOD, CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_iclken, OMAP3430_DSS_MOD, |
| CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_iclken, OMAP3430_CAM_MOD, |
| CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.per_cm_iclken, OMAP3430_PER_MOD, |
| CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.usbhost_cm_iclken, |
| OMAP3430ES2_USBHOST_MOD, CM_ICLKEN); |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_autoidle2, OMAP3430_IVA2_MOD, |
| CM_AUTOIDLE2); |
| omap2_cm_write_mod_reg(cm_context.mpu_cm_autoidle2, MPU_MOD, |
| CM_AUTOIDLE2); |
| omap2_cm_write_mod_reg(cm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.mpu_cm_clkstctrl, MPU_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.core_cm_clkstctrl, CORE_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.sgx_cm_clkstctrl, OMAP3430ES2_SGX_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_clkstctrl, OMAP3430_DSS_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_clkstctrl, OMAP3430_CAM_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.per_cm_clkstctrl, OMAP3430_PER_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.neon_cm_clkstctrl, OMAP3430_NEON_MOD, |
| OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.usbhost_cm_clkstctrl, |
| OMAP3430ES2_USBHOST_MOD, OMAP2_CM_CLKSTCTRL); |
| omap2_cm_write_mod_reg(cm_context.core_cm_autoidle1, CORE_MOD, |
| CM_AUTOIDLE1); |
| omap2_cm_write_mod_reg(cm_context.core_cm_autoidle2, CORE_MOD, |
| CM_AUTOIDLE2); |
| omap2_cm_write_mod_reg(cm_context.core_cm_autoidle3, CORE_MOD, |
| CM_AUTOIDLE3); |
| omap2_cm_write_mod_reg(cm_context.wkup_cm_autoidle, WKUP_MOD, |
| CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_autoidle, OMAP3430_DSS_MOD, |
| CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_autoidle, OMAP3430_CAM_MOD, |
| CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.per_cm_autoidle, OMAP3430_PER_MOD, |
| CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.usbhost_cm_autoidle, |
| OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE); |
| omap2_cm_write_mod_reg(cm_context.sgx_cm_sleepdep, OMAP3430ES2_SGX_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| omap2_cm_write_mod_reg(cm_context.dss_cm_sleepdep, OMAP3430_DSS_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| omap2_cm_write_mod_reg(cm_context.cam_cm_sleepdep, OMAP3430_CAM_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| omap2_cm_write_mod_reg(cm_context.per_cm_sleepdep, OMAP3430_PER_MOD, |
| OMAP3430_CM_SLEEPDEP); |
| omap2_cm_write_mod_reg(cm_context.usbhost_cm_sleepdep, |
| OMAP3430ES2_USBHOST_MOD, OMAP3430_CM_SLEEPDEP); |
| omap2_cm_write_mod_reg(cm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD, |
| OMAP3_CM_CLKOUT_CTRL_OFFSET); |
| } |
| |
| void omap3_cm_save_scratchpad_contents(u32 *ptr) |
| { |
| *ptr++ = omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL); |
| *ptr++ = omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL); |
| *ptr++ = 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. |
| */ |
| *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) & |
| ~OMAP3430_AUTO_PERIPH_DPLL_MASK; |
| *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL); |
| *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL); |
| *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3); |
| *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL); |
| *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL); |
| *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL); |
| *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL); |
| } |
| |
| /* |
| * |
| */ |
| |
| static struct cm_ll_data omap3xxx_cm_ll_data = { |
| .split_idlest_reg = &omap3xxx_cm_split_idlest_reg, |
| .wait_module_ready = &omap3xxx_cm_wait_module_ready, |
| }; |
| |
| int __init omap3xxx_cm_init(void) |
| { |
| if (!cpu_is_omap34xx()) |
| return 0; |
| |
| return cm_register(&omap3xxx_cm_ll_data); |
| } |
| |
| static void __exit omap3xxx_cm_exit(void) |
| { |
| if (!cpu_is_omap34xx()) |
| return; |
| |
| /* Should never happen */ |
| WARN(cm_unregister(&omap3xxx_cm_ll_data), |
| "%s: cm_ll_data function pointer mismatch\n", __func__); |
| } |
| __exitcall(omap3xxx_cm_exit); |
