diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-23 17:43:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-23 17:43:53 -0700 |
| commit | a5ebba6b54bc8038a38d3eacac3a79bbeaf3ee24 (patch) | |
| tree | d36eb26a7efd4e00381bc9f6474ea3ec31340585 | |
| parent | e81218f5f0fd219bd75768d845159ba4810bdd48 (diff) | |
| parent | 6b21a9ce0402e0c5fd2adfa3d41328fdd8f55a9a (diff) | |
| download | linux-a5ebba6b54bc8038a38d3eacac3a79bbeaf3ee24.tar.bz2 | |
Merge tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc power management changes from Arnd Bergmann:
"These are various power management related changes, mainly concerning
cpuidle on i.MX and OMAP, as well as a the move of the omap
smartreflex driver to live in the power subsystem."
Fix up conflicts in arch/arm/mach-{imx/mach-imx6q.c,omap2/prm2xxx_3xxx.h}
* tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge
ARM: OMAP2+: do not allow SmartReflex to be built as a module
ARM: OMAP2: Use hwmod to initialize mmc for 2420
ARM: OMAP3: PM: cpuidle: optimize the clkdm idle latency in C1 state
ARM: OMAP3: PM: cpuidle: optimize the PER latency in C1 state
ARM: OMAP3: PM: cpuidle: default to C1 in next_valid_state
ARM: OMAP3: PM: cleanup cam_pwrdm leftovers
ARM: OMAP3: PM: call pre/post transition per powerdomain
ARM: OMAP2+: powerdomain: allow pre/post transtion to be per pwrdm
ARM: OMAP3: PM: Remove IO Daisychain control from cpuidle
ARM: OMAP3PLUS: hwmod: reconfigure IO Daisychain during hwmod mux
ARM: OMAP3+: PRM: Enable IO wake up
ARM: OMAP4: PRM: Add IO Daisychain support
ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm file
ARM: OMAP3: PM: correct enable/disable of daisy io chain
ARM: OMAP2+: PRM: fix compile for OMAP4-only build
W1: OMAP HDQ1W: use runtime PM
ARM: OMAP2+: HDQ1W: use omap_device
W1: OMAP HDQ1W: use 32-bit register accesses
W1: OMAP HDQ1W: allow driver to be built on all OMAP2+
...
46 files changed, 810 insertions, 522 deletions
diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c index a2200c77bf70..4b89fae14a5a 100644 --- a/arch/arm/mach-imx/clk-imx51-imx53.c +++ b/arch/arm/mach-imx/clk-imx51-imx53.c @@ -279,6 +279,7 @@ static void __init mx5_clocks_common_init(unsigned long rate_ckil, clk_register_clkdev(clk[dummy], NULL, "imx-keypad"); clk_register_clkdev(clk[tve_gate], NULL, "imx-tve.0"); clk_register_clkdev(clk[ipu_di1_gate], "di1", "imx-tve.0"); + clk_register_clkdev(clk[gpc_dvfs], "gpc_dvfs", NULL); /* Set SDHC parents to be PLL2 */ clk_set_parent(clk[esdhc_a_sel], clk[pll2_sw]); @@ -336,7 +337,6 @@ int __init mx51_clocks_init(unsigned long rate_ckil, unsigned long rate_osc, clk_register_clkdev(clk[mx51_mipi], "mipi_hsp", NULL); clk_register_clkdev(clk[vpu_gate], NULL, "imx51-vpu.0"); clk_register_clkdev(clk[fec_gate], NULL, "imx27-fec.0"); - clk_register_clkdev(clk[gpc_dvfs], "gpc_dvfs", NULL); clk_register_clkdev(clk[ipu_gate], "bus", "imx51-ipu"); clk_register_clkdev(clk[ipu_di0_gate], "di0", "imx51-ipu"); clk_register_clkdev(clk[ipu_di1_gate], "di1", "imx51-ipu"); diff --git a/arch/arm/mach-imx/imx53-dt.c b/arch/arm/mach-imx/imx53-dt.c index fdd90805d98e..1b7a2fc36591 100644 --- a/arch/arm/mach-imx/imx53-dt.c +++ b/arch/arm/mach-imx/imx53-dt.c @@ -120,6 +120,7 @@ DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") .handle_irq = imx53_handle_irq, .timer = &imx53_timer, .init_machine = imx53_dt_init, + .init_late = imx53_init_late, .dt_compat = imx53_dt_board_compat, .restart = mxc_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 426d2087c460..5ec0608f2a76 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -12,7 +12,9 @@ #include <linux/clk.h> #include <linux/clkdev.h> +#include <linux/cpuidle.h> #include <linux/delay.h> +#include <linux/export.h> #include <linux/init.h> #include <linux/io.h> #include <linux/irq.h> @@ -24,6 +26,7 @@ #include <linux/phy.h> #include <linux/micrel_phy.h> #include <linux/mfd/anatop.h> +#include <asm/cpuidle.h> #include <asm/smp_twd.h> #include <asm/hardware/cache-l2x0.h> #include <asm/hardware/gic.h> @@ -31,8 +34,10 @@ #include <asm/mach/time.h> #include <asm/system_misc.h> #include <mach/common.h> +#include <mach/cpuidle.h> #include <mach/hardware.h> + void imx6q_restart(char mode, const char *cmd) { struct device_node *np; @@ -169,6 +174,19 @@ static void __init imx6q_init_machine(void) imx6q_usb_init(); } +static struct cpuidle_driver imx6q_cpuidle_driver = { + .name = "imx6q_cpuidle", + .owner = THIS_MODULE, + .en_core_tk_irqen = 1, + .states[0] = ARM_CPUIDLE_WFI_STATE, + .state_count = 1, +}; + +static void __init imx6q_init_late(void) +{ + imx_cpuidle_init(&imx6q_cpuidle_driver); +} + static void __init imx6q_map_io(void) { imx_lluart_map_io(); @@ -213,6 +231,7 @@ DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)") .handle_irq = imx6q_handle_irq, .timer = &imx6q_timer, .init_machine = imx6q_init_machine, + .init_late = imx6q_init_late, .dt_compat = imx6q_dt_compat, .restart = imx6q_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mach-mx53_ard.c b/arch/arm/mach-imx/mach-mx53_ard.c index f641a1758691..6c28e65f424d 100644 --- a/arch/arm/mach-imx/mach-mx53_ard.c +++ b/arch/arm/mach-imx/mach-mx53_ard.c @@ -267,5 +267,6 @@ MACHINE_START(MX53_ARD, "Freescale MX53 ARD Board") .handle_irq = imx53_handle_irq, .timer = &mx53_ard_timer, .init_machine = mx53_ard_board_init, + .init_late = imx53_init_late, .restart = mxc_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mach-mx53_evk.c b/arch/arm/mach-imx/mach-mx53_evk.c index a1060b26fb23..09fe2197b491 100644 --- a/arch/arm/mach-imx/mach-mx53_evk.c +++ b/arch/arm/mach-imx/mach-mx53_evk.c @@ -174,5 +174,6 @@ MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board") .handle_irq = imx53_handle_irq, .timer = &mx53_evk_timer, .init_machine = mx53_evk_board_init, + .init_late = imx53_init_late, .restart = mxc_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mach-mx53_loco.c b/arch/arm/mach-imx/mach-mx53_loco.c index 388c415d6b62..8abe23c1d3c8 100644 --- a/arch/arm/mach-imx/mach-mx53_loco.c +++ b/arch/arm/mach-imx/mach-mx53_loco.c @@ -316,5 +316,6 @@ MACHINE_START(MX53_LOCO, "Freescale MX53 LOCO Board") .handle_irq = imx53_handle_irq, .timer = &mx53_loco_timer, .init_machine = mx53_loco_board_init, + .init_late = imx53_init_late, .restart = mxc_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mach-mx53_smd.c b/arch/arm/mach-imx/mach-mx53_smd.c index f297df7ccb39..b15d6a6d3b68 100644 --- a/arch/arm/mach-imx/mach-mx53_smd.c +++ b/arch/arm/mach-imx/mach-mx53_smd.c @@ -163,5 +163,6 @@ MACHINE_START(MX53_SMD, "Freescale MX53 SMD Board") .handle_irq = imx53_handle_irq, .timer = &mx53_smd_timer, .init_machine = mx53_smd_board_init, + .init_late = imx53_init_late, .restart = mxc_restart, MACHINE_END diff --git a/arch/arm/mach-imx/mm-imx5.c b/arch/arm/mach-imx/mm-imx5.c index 1d003053d562..f19d604e1b2a 100644 --- a/arch/arm/mach-imx/mm-imx5.c +++ b/arch/arm/mach-imx/mm-imx5.c @@ -16,7 +16,6 @@ #include <linux/clk.h> #include <linux/pinctrl/machine.h> -#include <asm/system_misc.h> #include <asm/mach/map.h> #include <mach/hardware.h> @@ -24,24 +23,6 @@ #include <mach/devices-common.h> #include <mach/iomux-v3.h> -static struct clk *gpc_dvfs_clk; - -static void imx5_idle(void) -{ - /* gpc clock is needed for SRPG */ - if (gpc_dvfs_clk == NULL) { - gpc_dvfs_clk = clk_get(NULL, "gpc_dvfs"); - if (IS_ERR(gpc_dvfs_clk)) - return; - clk_prepare(gpc_dvfs_clk); - } - clk_enable(gpc_dvfs_clk); - mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF); - if (!tzic_enable_wake()) - cpu_do_idle(); - clk_disable(gpc_dvfs_clk); -} - /* * Define the MX50 memory map. */ @@ -105,7 +86,6 @@ void __init imx51_init_early(void) mxc_set_cpu_type(MXC_CPU_MX51); mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR)); mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR)); - arm_pm_idle = imx5_idle; } void __init imx53_init_early(void) @@ -243,4 +223,10 @@ void __init imx53_soc_init(void) void __init imx51_init_late(void) { mx51_neon_fixup(); + imx51_pm_init(); +} + +void __init imx53_init_late(void) +{ + imx53_pm_init(); } diff --git a/arch/arm/mach-imx/pm-imx5.c b/arch/arm/mach-imx/pm-imx5.c index e26a9cb05ed8..19621ed1ffa5 100644 --- a/arch/arm/mach-imx/pm-imx5.c +++ b/arch/arm/mach-imx/pm-imx5.c @@ -12,19 +12,30 @@ #include <linux/clk.h> #include <linux/io.h> #include <linux/err.h> +#include <linux/export.h> #include <asm/cacheflush.h> +#include <asm/system_misc.h> #include <asm/tlbflush.h> #include <mach/common.h> +#include <mach/cpuidle.h> #include <mach/hardware.h> #include "crm-regs-imx5.h" -static struct clk *gpc_dvfs_clk; +/* + * The WAIT_UNCLOCKED_POWER_OFF state only requires <= 500ns to exit. + * This is also the lowest power state possible without affecting + * non-cpu parts of the system. For these reasons, imx5 should default + * to always using this state for cpu idling. The PM_SUSPEND_STANDBY also + * uses this state and needs to take no action when registers remain confgiured + * for this state. + */ +#define IMX5_DEFAULT_CPU_IDLE_STATE WAIT_UNCLOCKED_POWER_OFF /* * set cpu low power mode before WFI instruction. This function is called * mx5 because it can be used for mx50, mx51, and mx53. */ -void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode) +static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode) { u32 plat_lpc, arm_srpgcr, ccm_clpcr; u32 empgc0, empgc1; @@ -87,11 +98,6 @@ void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode) } } -static int mx5_suspend_prepare(void) -{ - return clk_prepare_enable(gpc_dvfs_clk); -} - static int mx5_suspend_enter(suspend_state_t state) { switch (state) { @@ -99,7 +105,7 @@ static int mx5_suspend_enter(suspend_state_t state) mx5_cpu_lp_set(STOP_POWER_OFF); break; case PM_SUSPEND_STANDBY: - mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF); + /* DEFAULT_IDLE_STATE already configured */ break; default: return -EINVAL; @@ -114,12 +120,10 @@ static int mx5_suspend_enter(suspend_state_t state) __raw_writel(0, MXC_SRPG_EMPGC1_SRPGCR); } cpu_do_idle(); - return 0; -} -static void mx5_suspend_finish(void) -{ - clk_disable_unprepare(gpc_dvfs_clk); + /* return registers to default idle state */ + mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE); + return 0; } static int mx5_pm_valid(suspend_state_t state) @@ -129,25 +133,80 @@ static int mx5_pm_valid(suspend_state_t state) static const struct platform_suspend_ops mx5_suspend_ops = { .valid = mx5_pm_valid, - .prepare = mx5_suspend_prepare, .enter = mx5_suspend_enter, - .finish = mx5_suspend_finish, }; -static int __init mx5_pm_init(void) +static inline int imx5_cpu_do_idle(void) +{ + int ret = tzic_enable_wake(); + + if (likely(!ret)) + cpu_do_idle(); + + return ret; +} + +static void imx5_pm_idle(void) +{ + imx5_cpu_do_idle(); +} + +static int imx5_cpuidle_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int idx) +{ + int ret; + + ret = imx5_cpu_do_idle(); + if (ret < 0) + return ret; + + return idx; +} + +static struct cpuidle_driver imx5_cpuidle_driver = { + .name = "imx5_cpuidle", + .owner = THIS_MODULE, + .en_core_tk_irqen = 1, + .states[0] = { + .enter = imx5_cpuidle_enter, + .exit_latency = 2, + .target_residency = 1, + .flags = CPUIDLE_FLAG_TIME_VALID, + .name = "IMX5 SRPG", + .desc = "CPU state retained,powered off", + }, + .state_count = 1, +}; + +static int __init imx5_pm_common_init(void) { - if (!cpu_is_mx51() && !cpu_is_mx53()) - return 0; + int ret; + struct clk *gpc_dvfs_clk = clk_get(NULL, "gpc_dvfs"); - if (gpc_dvfs_clk == NULL) - gpc_dvfs_clk = clk_get(NULL, "gpc_dvfs"); + if (IS_ERR(gpc_dvfs_clk)) + return PTR_ERR(gpc_dvfs_clk); - if (!IS_ERR(gpc_dvfs_clk)) { - if (cpu_is_mx51()) - suspend_set_ops(&mx5_suspend_ops); - } else - return -EPERM; + ret = clk_prepare_enable(gpc_dvfs_clk); + if (ret) + return ret; + arm_pm_idle = imx5_pm_idle; + + /* Set the registers to the default cpu idle state. */ + mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE); + + imx_cpuidle_init(&imx5_cpuidle_driver); return 0; } -device_initcall(mx5_pm_init); + +void __init imx51_pm_init(void) +{ + int ret = imx5_pm_common_init(); + if (!ret) + suspend_set_ops(&mx5_suspend_ops); +} + +void __init imx53_pm_init(void) +{ + imx5_pm_common_init(); +} diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 19b771d0c0d7..b7a4ab65faca 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -74,8 +74,9 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o omap-mpuss-lowpower.o obj-$(CONFIG_SOC_OMAP5) += omap-mpuss-lowpower.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o -obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o -obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o + +obj-$(CONFIG_POWER_AVS_OMAP) += sr_device.o +obj-$(CONFIG_POWER_AVS_OMAP_CLASS3) += smartreflex-class3.o AFLAGS_sleep24xx.o :=-Wa,-march=armv6 AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a$(plus_sec) diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c index 31344528eb54..f2a49a48ef59 100644 --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -75,20 +75,6 @@ static struct omap3_idle_statedata omap3_idle_data[] = { static struct powerdomain *mpu_pd, *core_pd, *per_pd, *cam_pd; -static int _cpuidle_allow_idle(struct powerdomain *pwrdm, - struct clockdomain *clkdm) -{ - clkdm_allow_idle(clkdm); - return 0; -} - -static int _cpuidle_deny_idle(struct powerdomain *pwrdm, - struct clockdomain *clkdm) -{ - clkdm_deny_idle(clkdm); - return 0; -} - static int __omap3_enter_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) @@ -106,8 +92,8 @@ static int __omap3_enter_idle(struct cpuidle_device *dev, /* Deny idle for C1 */ if (index == 0) { - pwrdm_for_each_clkdm(mpu_pd, _cpuidle_deny_idle); - pwrdm_for_each_clkdm(core_pd, _cpuidle_deny_idle); + clkdm_deny_idle(mpu_pd->pwrdm_clkdms[0]); + clkdm_deny_idle(core_pd->pwrdm_clkdms[0]); } /* @@ -129,8 +115,8 @@ static int __omap3_enter_idle(struct cpuidle_device *dev, /* Re-allow idle for C1 */ if (index == 0) { - pwrdm_for_each_clkdm(mpu_pd, _cpuidle_allow_idle); - pwrdm_for_each_clkdm(core_pd, _cpuidle_allow_idle); + clkdm_allow_idle(mpu_pd->pwrdm_clkdms[0]); + clkdm_allow_idle(core_pd->pwrdm_clkdms[0]); } return_sleep_time: @@ -176,7 +162,7 @@ static int next_valid_state(struct cpuidle_device *dev, u32 mpu_deepest_state = PWRDM_POWER_RET; u32 core_deepest_state = PWRDM_POWER_RET; int idx; - int next_index = -1; + int next_index = 0; /* C1 is the default value */ if (enable_off_mode) { mpu_deepest_state = PWRDM_POWER_OFF; @@ -207,12 +193,6 @@ static int next_valid_state(struct cpuidle_device *dev, } } - /* - * C1 is always valid. - * So, no need to check for 'next_index == -1' outside - * this loop. - */ - return next_index; } @@ -226,23 +206,22 @@ static int next_valid_state(struct cpuidle_device *dev, * the device to the specified or a safer state. */ static int omap3_enter_idle_bm(struct cpuidle_device *dev, - struct cpuidle_driver *drv, + struct cpuidle_driver *drv, int index) { int new_state_idx; - u32 core_next_state, per_next_state = 0, per_saved_state = 0, cam_state; + u32 core_next_state, per_next_state = 0, per_saved_state = 0; struct omap3_idle_statedata *cx; int ret; /* - * Prevent idle completely if CAM is active. + * Use only C1 if CAM is active. * CAM does not have wakeup capability in OMAP3. */ - cam_state = pwrdm_read_pwrst(cam_pd); - if (cam_state == PWRDM_POWER_ON) { + if (pwrdm_read_pwrst(cam_pd) == PWRDM_POWER_ON) new_state_idx = drv->safe_state_index; - goto select_state; - } + else + new_state_idx = next_valid_state(dev, drv, index); /* * FIXME: we currently manage device-specific idle states @@ -252,24 +231,28 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev, * its own code. */ - /* - * Prevent PER off if CORE is not in retention or off as this - * would disable PER wakeups completely. - */ - cx = &omap3_idle_data[index]; + /* Program PER state */ + cx = &omap3_idle_data[new_state_idx]; core_next_state = cx->core_state; per_next_state = per_saved_state = pwrdm_read_next_pwrst(per_pd); - if ((per_next_state == PWRDM_POWER_OFF) && - (core_next_state > PWRDM_POWER_RET)) - per_next_state = PWRDM_POWER_RET; + if (new_state_idx == 0) { + /* In C1 do not allow PER state lower than CORE state */ + if (per_next_state < core_next_state) + per_next_state = core_next_state; + } else { + /* + * Prevent PER OFF if CORE is not in RETention or OFF as this + * would disable PER wakeups completely. + */ + if ((per_next_state == PWRDM_POWER_OFF) && + (core_next_state > PWRDM_POWER_RET)) + per_next_state = PWRDM_POWER_RET; + } /* Are we changing PER target state? */ if (per_next_state != per_saved_state) pwrdm_set_next_pwrst(per_pd, per_next_state); - new_state_idx = next_valid_state(dev, drv, index); - -select_state: ret = omap3_enter_idle(dev, drv, new_state_idx); /* Restore original PER state if it was modified */ @@ -286,7 +269,7 @@ struct cpuidle_driver omap3_idle_driver = { .owner = THIS_MODULE, .states = { { - .enter = omap3_enter_idle, + .enter = omap3_enter_idle_bm, .exit_latency = 2 + 2, .target_residency = 5, .flags = CPUIDLE_FLAG_TIME_VALID, diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index 71651e20a43e..c00c68961bb8 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -27,7 +27,6 @@ #include "iomap.h" #include <plat/board.h> -#include <plat/mmc.h> #include <plat/dma.h> #include <plat/omap_hwmod.h> #include <plat/omap_device.h> @@ -603,112 +602,6 @@ static inline void omap_init_aes(void) { } /*-------------------------------------------------------------------------*/ -#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) - -static inline void omap242x_mmc_mux(struct omap_mmc_platform_data - *mmc_controller) -{ - if ((mmc_controller->slots[0].switch_pin > 0) && \ - (mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES)) - omap_mux_init_gpio(mmc_controller->slots[0].switch_pin, - OMAP_PIN_INPUT_PULLUP); - if ((mmc_controller->slots[0].gpio_wp > 0) && \ - (mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES)) - omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp, - OMAP_PIN_INPUT_PULLUP); - - omap_mux_init_signal("sdmmc_cmd", 0); - omap_mux_init_signal("sdmmc_clki", 0); - omap_mux_init_signal("sdmmc_clko", 0); - omap_mux_init_signal("sdmmc_dat0", 0); - omap_mux_init_signal("sdmmc_dat_dir0", 0); - omap_mux_init_signal("sdmmc_cmd_dir", 0); - if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) { - omap_mux_init_signal("sdmmc_dat1", 0); - omap_mux_init_signal("sdmmc_dat2", 0); - omap_mux_init_signal("sdmmc_dat3", 0); - omap_mux_init_signal("sdmmc_dat_dir1", 0); - omap_mux_init_signal("sdmmc_dat_dir2", 0); - omap_mux_init_signal("sdmmc_dat_dir3", 0); - } - - /* - * Use internal loop-back in MMC/SDIO Module Input Clock - * selection - */ - if (mmc_controller->slots[0].internal_clock) { - u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); - v |= (1 << 24); - omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); - } -} - -void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data) -{ - struct platform_device *pdev; - struct omap_hwmod *oh; - int id = 0; - char *oh_name = "msdi1"; - char *dev_name = "mmci-omap"; - - if (!mmc_data[0]) { - pr_err("%s fails: Incomplete platform data\n", __func__); - return; - } - - omap242x_mmc_mux(mmc_data[0]); - - oh = omap_hwmod_lookup(oh_name); - if (!oh) { - pr_err("Could not look up %s\n", oh_name); - return; - } - pdev = omap_device_build(dev_name, id, oh, mmc_data[0], - sizeof(struct omap_mmc_platform_data), NULL, 0, 0); - if (IS_ERR(pdev)) - WARN(1, "Can'd build omap_device for %s:%s.\n", - dev_name, oh->name); -} - -#endif - -/*-------------------------------------------------------------------------*/ - -#if defined(CONFIG_HDQ_MASTER_OMAP) || defined(CONFIG_HDQ_MASTER_OMAP_MODULE) -#define OMAP_HDQ_BASE 0x480B2000 -static struct resource omap_hdq_resources[] = { - { - .start = OMAP_HDQ_BASE, - .end = OMAP_HDQ_BASE + 0x1C, - .flags = IORESOURCE_MEM, - }, - { - .start = INT_24XX_HDQ_IRQ, - .flags = IORESOURCE_IRQ, - }, -}; -static struct platform_device omap_hdq_dev = { - .name = "omap_hdq", - .id = 0, - .dev = { - .platform_data = NULL, - }, - .num_resources = ARRAY_SIZE(omap_hdq_resources), - .resource = omap_hdq_resources, -}; -static inline void omap_hdq_init(void) -{ - if (cpu_is_omap2420()) - return; - - platform_device_register(&omap_hdq_dev); -} -#else -static inline void omap_hdq_init(void) {} -#endif - -/*---------------------------------------------------------------------------*/ - #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \ defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE) #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE) @@ -753,7 +646,6 @@ static int __init omap2_init_devices(void) omap_init_mcspi(); } omap_init_pmu(); - omap_hdq_init(); omap_init_sti(); omap_init_sham(); omap_init_aes(); diff --git a/arch/arm/mach-omap2/hdq1w.c b/arch/arm/mach-omap2/hdq1w.c index 297ebe03f09c..cdd6dda03828 100644 --- a/arch/arm/mach-omap2/hdq1w.c +++ b/arch/arm/mach-omap2/hdq1w.c @@ -22,7 +22,13 @@ * 02110-1301 USA */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> + #include <plat/omap_hwmod.h> +#include <plat/omap_device.h> #include <plat/hdq1w.h> #include "common.h" @@ -70,3 +76,23 @@ int omap_hdq1w_reset(struct omap_hwmod *oh) return 0; } + +static int __init omap_init_hdq(void) +{ + int id = -1; + struct platform_device *pdev; + struct omap_hwmod *oh; + char *oh_name = "hdq1w"; + char *devname = "omap_hdq"; + + oh = omap_hwmod_lookup(oh_name); + if (!oh) + return 0; + + pdev = omap_device_build(devname, id, oh, NULL, 0, NULL, 0, 0); + WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n", + devname, oh->name); + + return 0; +} +arch_initcall(omap_init_hdq); diff --git a/arch/arm/mach-omap2/msdi.c b/arch/arm/mach-omap2/msdi.c index ef2a6924731a..fb5bc6cf3773 100644 --- a/arch/arm/mach-omap2/msdi.c +++ b/arch/arm/mach-omap2/msdi.c @@ -22,11 +22,15 @@ */ #include <linux/kernel.h> +#include <linux/err.h> #include <plat/omap_hwmod.h> +#include <plat/omap_device.h> #include <plat/mmc.h> #include "common.h" +#include "control.h" +#include "mux.h" /* * MSDI_CON_OFFSET: offset in bytes of the MSDI IP block's CON register @@ -86,3 +90,72 @@ int omap_msdi_reset(struct omap_hwmod *oh) return 0; } + +#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) + +static inline void omap242x_mmc_mux(struct omap_mmc_platform_data + *mmc_controller) +{ + if ((mmc_controller->slots[0].switch_pin > 0) && \ + (mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES)) + omap_mux_init_gpio(mmc_controller->slots[0].switch_pin, + OMAP_PIN_INPUT_PULLUP); + if ((mmc_controller->slots[0].gpio_wp > 0) && \ + (mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES)) + omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp, + OMAP_PIN_INPUT_PULLUP); + + omap_mux_init_signal("sdmmc_cmd", 0); + omap_mux_init_signal("sdmmc_clki", 0); + omap_mux_init_signal("sdmmc_clko", 0); + omap_mux_init_signal("sdmmc_dat0", 0); + omap_mux_init_signal("sdmmc_dat_dir0", 0); + omap_mux_init_signal("sdmmc_cmd_dir", 0); + if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) { + omap_mux_init_signal("sdmmc_dat1", 0); + omap_mux_init_signal("sdmmc_dat2", 0); + omap_mux_init_signal("sdmmc_dat3", 0); + omap_mux_init_signal("sdmmc_dat_dir1", 0); + omap_mux_init_signal("sdmmc_dat_dir2", 0); + omap_mux_init_signal("sdmmc_dat_dir3", 0); + } + + /* + * Use internal loop-back in MMC/SDIO Module Input Clock + * selection + */ + if (mmc_controller->slots[0].internal_clock) { + u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); + v |= (1 << 24); + omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); + } +} + +void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data) +{ + struct platform_device *pdev; + struct omap_hwmod *oh; + int id = 0; + char *oh_name = "msdi1"; + char *dev_name = "mmci-omap"; + + if (!mmc_data[0]) { + pr_err("%s fails: Incomplete platform data\n", __func__); + return; + } + + omap242x_mmc_mux(mmc_data[0]); + + oh = omap_hwmod_lookup(oh_name); + if (!oh) { + pr_err("Could not look up %s\n", oh_name); + return; + } + pdev = omap_device_build(dev_name, id, oh, mmc_data[0], + sizeof(struct omap_mmc_platform_data), NULL, 0, 0); + if (IS_ERR(pdev)) + WARN(1, "Can'd build omap_device for %s:%s.\n", + dev_name, oh->name); +} + +#endif diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c index 13670aa84e58..e35a86bf4e1d 100644 --- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c +++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c @@ -255,7 +255,7 @@ int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state) return -ENXIO; } - pwrdm_pre_transition(); + pwrdm_pre_transition(NULL); /* * Check MPUSS next state and save interrupt controller if needed. @@ -287,7 +287,7 @@ int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state) wakeup_cpu = smp_processor_id(); set_cpu_next_pwrst(wakeup_cpu, PWRDM_POWER_ON); - pwrdm_post_transition(); + pwrdm_post_transition(NULL); return 0; } diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 3f21568f1753..6ca8e519968d 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -153,6 +153,7 @@ #include "prm44xx.h" #include "prminst44xx.h" #include "mux.h" +#include "pm.h" /* Maximum microseconds to wait for OMAP module to softreset */ #define MAX_MODULE_SOFTRESET_WAIT 10000 @@ -197,6 +198,9 @@ static LIST_HEAD(omap_hwmod_list); /* mpu_oh: used to add/remove MPU initiator from sleepdep list */ static struct omap_hwmod *mpu_oh; +/* io_chain_lock: used to serialize reconfigurations of the I/O chain */ +static DEFINE_SPINLOCK(io_chain_lock); + /* * linkspace: ptr to a buffer that struct omap_hwmod_link records are * allocated from - used to reduce the number of small memory @@ -1759,6 +1763,32 @@ static int _reset(struct omap_hwmod *oh) } /** + * _reconfigure_io_chain - clear any I/O chain wakeups and reconfigure chain + * + * Call the appropriate PRM function to clear any logged I/O chain + * wakeups and to reconfigure the chain. This apparently needs to be + * done upon every mux change. Since hwmods can be concurrently + * enabled and idled, hold a spinlock around the I/O chain + * reconfiguration sequence. No return value. + * + * XXX When the PRM code is moved to drivers, this function can be removed, + * as the PRM infrastructure should abstract this. + */ +static void _reconfigure_io_chain(void) +{ + unsigned long flags; + + spin_lock_irqsave(&io_chain_lock, flags); + + if (cpu_is_omap34xx() && omap3_has_io_chain_ctrl()) + omap3xxx_prm_reconfigure_io_chain(); + else if (cpu_is_omap44xx()) + omap44xx_prm_reconfigure_io_chain(); + + spin_unlock_irqrestore(&io_chain_lock, flags); +} + +/** * _enable - enable an omap_hwmod * @oh: struct omap_hwmod * * @@ -1814,8 +1844,10 @@ static int _enable(struct omap_hwmod *oh) /* Mux pins for device runtime if populated */ if (oh->mux && (!oh->mux->enabled || ((oh->_state == _HWMOD_STATE_IDLE) && - oh->mux->pads_dynamic))) + oh->mux->pads_dynamic))) { omap_hwmod_mux(oh->mux, _HWMOD_STATE_ENABLED); + _reconfigure_io_chain(); + } _add_initiator_dep(oh, mpu_oh); @@ -1907,8 +1939,10 @@ static int _idle(struct omap_hwmod *oh) clkdm_hwmod_disable(oh->clkdm, oh); /* Mux pins for device idle if populated */ - if (oh->mux && oh->mux->pads_dynamic) + if (oh->mux && oh->mux->pads_dynamic) { omap_hwmod_mux(oh->mux, _HWMOD_STATE_IDLE); + _reconfigure_io_chain(); + } oh->_state = _HWMOD_STATE_IDLE; diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index cdb9637aab19..c9e38200216b 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -14,6 +14,8 @@ * * XXX these should be marked initdata for multi-OMAP kernels */ +#include <linux/power/smartreflex.h> + #include <plat/omap_hwmod.h> #include <mach/irqs.h> #include <plat/cpu.h> @@ -29,8 +31,6 @@ #include <plat/dmtimer.h> #include "omap_hwmod_common_data.h" - -#include "smartreflex.h" #include "prm-regbits-34xx.h" #include "cm-regbits-34xx.h" #include "wd_timer.h" @@ -1357,7 +1357,7 @@ static struct omap_hwmod_irq_info omap3_smartreflex_mpu_irqs[] = { }; static struct omap_hwmod omap34xx_sr1_hwmod = { - .name = "sr1", + .name = "smartreflex_mpu_iva", .class = &omap34xx_smartreflex_hwmod_class, .main_clk = "sr1_fck", .prcm = { @@ -1375,7 +1375,7 @@ static struct omap_hwmod omap34xx_sr1_hwmod = { }; static struct omap_hwmod omap36xx_sr1_hwmod = { - .name = "sr1", + .name = "smartreflex_mpu_iva", .class = &omap36xx_smartreflex_hwmod_class, .main_clk = "sr1_fck", .prcm = { @@ -1402,7 +1402,7 @@ static struct omap_hwmod_irq_info omap3_smartreflex_core_irqs[] = { }; static struct omap_hwmod omap34xx_sr2_hwmod = { - .name = "sr2", + .name = "smartreflex_core", .class = &omap34xx_smartreflex_hwmod_class, .main_clk = "sr2_fck", .prcm = { @@ -1420,7 +1420,7 @@ static struct omap_hwmod omap34xx_sr2_hwmod = { }; static struct omap_hwmod omap36xx_sr2_hwmod = { - .name = "sr2", + .name = "smartreflex_core", .class = &omap36xx_smartreflex_hwmod_class, .main_clk = "sr2_fck", .prcm = { diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index 5c2ce7e77838..242aee498ceb 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -19,6 +19,7 @@ */ #include <linux/io.h> +#include <linux/power/smartreflex.h> #include <plat/omap_hwmod.h> #include <plat/cpu.h> @@ -32,8 +33,6 @@ #include <plat/common.h> #include "omap_hwmod_common_data.h" - -#include "smartreflex.h" #include "cm1_44xx.h" #include "cm2_44xx.h" #include "prm44xx.h" diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index ab04d3bba2e7..686137d164da 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -101,7 +101,7 @@ extern void enable_omap3630_toggle_l2_on_restore(void); static inline void enable_omap3630_toggle_l2_on_restore(void) { } #endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */ -#ifdef CONFIG_OMAP_SMARTREFLEX +#ifdef CONFIG_POWER_AVS_OMAP extern int omap_devinit_smartreflex(void); extern void omap_enable_smartreflex_on_init(void); #else diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 9b463c987508..e4fc88c65dbd 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -70,34 +70,6 @@ void (*omap3_do_wfi_sram)(void); static struct powerdomain *mpu_pwrdm, *neon_pwrdm; static struct powerdomain *core_pwrdm, *per_pwrdm; -static struct powerdomain *cam_pwrdm; - -static void omap3_enable_io_chain(void) -{ - int timeout = 0; - - omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, - PM_WKEN); - /* Do a readback to assure write has been done */ - omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN); - - while (!(omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN) & - OMAP3430_ST_IO_CHAIN_MASK)) { - timeout++; - if (timeout > 1000) { - pr_err("Wake up daisy chain activation failed.\n"); - return; - } - omap2_prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK, - WKUP_MOD, PM_WKEN); - } -} - -static void omap3_disable_io_chain(void) -{ - omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, - PM_WKEN); -} static void omap3_core_save_context(void) { @@ -299,24 +271,22 @@ void omap_sram_idle(void) /* Enable IO-PAD and IO-CHAIN wakeups */ per_next_state = pwrdm_read_next_pwrst(per_pwrdm); core_next_state = pwrdm_read_next_pwrst(core_pwrdm); - if (omap3_has_io_wakeup() && - (per_next_state < PWRDM_POWER_ON || - core_next_state < PWRDM_POWER_ON)) { - omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN); - if (omap3_has_io_chain_ctrl()) - omap3_enable_io_chain(); - } - pwrdm_pre_transition(); + if (mpu_next_state < PWRDM_POWER_ON) { + pwrdm_pre_transition(mpu_pwrdm); + pwrdm_pre_transition(neon_pwrdm); + } /* PER */ if (per_next_state < PWRDM_POWER_ON) { + pwrdm_pre_transition(per_pwrdm); per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0; omap2_gpio_prepare_for_idle(per_going_off); } /* CORE */ if (core_next_state < PWRDM_POWER_ON) { + pwrdm_pre_transition(core_pwrdm); if (core_next_state == PWRDM_POWER_OFF) { omap3_core_save_context(); omap3_cm_save_context(); @@ -369,26 +339,20 @@ void omap_sram_idle(void) omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK, OMAP3430_GR_MOD, OMAP3_PRM_VOLTCTRL_OFFSET); + pwrdm_post_transition(core_pwrdm); } omap3_intc_resume_idle(); - pwrdm_post_transition(); - /* PER */ - if (per_next_state < PWRDM_POWER_ON) + if (per_next_state < PWRDM_POWER_ON) { omap2_gpio_resume_after_idle(); - - /* Disable IO-PAD and IO-CHAIN wakeup */ - if (omap3_has_io_wakeup() && - (per_next_state < PWRDM_POWER_ON || - core_next_state < PWRDM_POWER_ON)) { - omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, - PM_WKEN); - if (omap3_has_io_chain_ctrl()) - omap3_disable_io_chain(); + pwrdm_post_transition(per_pwrdm); } - clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]); + if (mpu_next_state < PWRDM_POWER_ON) { + pwrdm_post_transition(mpu_pwrdm); + pwrdm_post_transition(neon_pwrdm); + } } static void omap3_pm_idle(void) @@ -754,7 +718,6 @@ int __init omap3_pm_init(void) neon_pwrdm = pwrdm_lookup("neon_pwrdm"); per_pwrdm = pwrdm_lookup("per_pwrdm"); core_pwrdm = pwrdm_lookup("core_pwrdm"); - cam_pwrdm = pwrdm_lookup("cam_pwrdm"); neon_clkdm = clkdm_lookup("neon_clkdm"); mpu_clkdm = clkdm_lookup("mpu_clkdm"); diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c index 2f963f702a05..69b36e185e9b 100644 --- a/arch/arm/mach-omap2/powerdomain.c +++ b/arch/arm/mach-omap2/powerdomain.c @@ -985,15 +985,23 @@ int pwrdm_state_switch(struct powerdomain *pwrdm) return ret; } -int pwrdm_pre_transition(void) +int pwrdm_pre_transition(struct powerdomain *pwrdm) { - pwrdm_for_each(_pwrdm_pre_transition_cb, NULL); + if (pwrdm) + _pwrdm_pre_transition_cb(pwrdm, NULL); + else + pwrdm_for_each(_pwrdm_pre_transition_cb, NULL); + return 0; } -int pwrdm_post_transition(void) +int pwrdm_post_transition(struct powerdomain *pwrdm) { - pwrdm_for_each(_pwrdm_post_transition_cb, NULL); + if (pwrdm) + _pwrdm_post_transition_cb(pwrdm, NULL); + else + pwrdm_for_each(_pwrdm_post_transition_cb, NULL); + return 0; } diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h index a8a95184243d..baee90608d11 100644 --- a/arch/arm/mach-omap2/powerdomain.h +++ b/arch/arm/mach-omap2/powerdomain.h @@ -230,8 +230,8 @@ bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm); int pwrdm_wait_transition(struct powerdomain *pwrdm); int pwrdm_state_switch(struct powerdomain *pwrdm); -int pwrdm_pre_transition(void); -int pwrdm_post_transition(void); +int pwrdm_pre_transition(struct powerdomain *pwrdm); +int pwrdm_post_transition(struct powerdomain *pwrdm); int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm); int pwrdm_get_context_loss_count(struct powerdomain *pwrdm); bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm); diff --git a/arch/arm/mach-omap2/prcm-common.h b/arch/arm/mach-omap2/prcm-common.h index d5ae4e234bbc..e5f0503a68b0 100644 --- a/arch/arm/mach-omap2/prcm-common.h +++ b/arch/arm/mach-omap2/prcm-common.h @@ -410,6 +410,14 @@ */ #define MAX_MODULE_HARDRESET_WAIT 10000 +/* + * Maximum time(us) it takes to output the signal WUCLKOUT of the last + * pad of the I/O ring after asserting WUCLKIN high. Tero measured + * the actual time at 7 to 8 microseconds on OMAP3 and 2 to 4 + * microseconds on OMAP4, so this timeout may be too high. + */ +#define MAX_IOPAD_LATCH_TIME 100 + # ifndef __ASSEMBLER__ extern void __iomem *prm_base; extern void __iomem *cm_base; diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c index 21cb74003a56..a0309dea6794 100644 --- a/arch/arm/mach-omap2/prm2xxx_3xxx.c +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c @@ -302,11 +302,59 @@ void omap3xxx_prm_restore_irqen(u32 *saved_mask) OMAP3_PRM_IRQENABLE_MPU_OFFSET); } +/** + * omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain + * + * Clear any previously-latched I/O wakeup events and ensure that the + * I/O wakeup gates are aligned with the current mux settings. Works + * by asserting WUCLKIN, waiting for WUCLKOUT to be asserted, and then + * deasserting WUCLKIN and clearing the ST_IO_CHAIN WKST bit. No + * return value. + */ +void omap3xxx_prm_reconfigure_io_chain(void) +{ + int i = 0; + + omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, + PM_WKEN); + + omap_test_timeout(omap2_prm_read_mod_reg(WKUP_MOD, PM_WKST) & + OMAP3430_ST_IO_CHAIN_MASK, + MAX_IOPAD_LATCH_TIME, i); + if (i == MAX_IOPAD_LATCH_TIME) + pr_warn("PRM: I/O chain clock line assertion timed out\n"); + + omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, + PM_WKEN); + + omap2_prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK, WKUP_MOD, + PM_WKST); + + omap2_prm_read_mod_reg(WKUP_MOD, PM_WKST); +} + +/** + * omap3xxx_prm_enable_io_wakeup - enable wakeup events from I/O wakeup latches + * + * Activates the I/O wakeup event latches and allows events logged by + * those latches to signal a wakeup event to the PRCM. For I/O + * wakeups to occur, WAKEUPENABLE bits must be set in the pad mux + * registers, and omap3xxx_prm_reconfigure_io_chain() must be called. + * No return value. + */ +static void __init omap3xxx_prm_enable_io_wakeup(void) +{ + if (omap3_has_io_wakeup()) + omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, + PM_WKEN); +} + static int __init omap3xxx_prcm_init(void) { int ret = 0; if (cpu_is_omap34xx()) { + omap3xxx_prm_enable_io_wakeup(); ret = omap_prcm_register_chain_handler(&omap3_prcm_irq_setup); if (!ret) irq_set_status_flags(omap_prcm_event_to_irq("io"), diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.h b/arch/arm/mach-omap2/prm2xxx_3xxx.h index f7bb57fff416..c19d249b4816 100644 --- a/arch/arm/mach-omap2/prm2xxx_3xxx.h +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.h @@ -253,12 +253,15 @@ extern u32 omap3_prm_vcvp_read(u8 offset); extern void omap3_prm_vcvp_write(u32 val, u8 offset); extern u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset); +extern void omap3xxx_prm_reconfigure_io_chain(void); + /* PRM interrupt-related functions */ extern void omap3xxx_prm_read_pending_irqs(unsigned long *events); extern void omap3xxx_prm_ocp_barrier(void); extern void omap3xxx_prm_save_and_clear_irqen(u32 *saved_mask); extern void omap3xxx_prm_restore_irqen(u32 *saved_mask); -#endif + +#endif /* __ASSEMBLER */ /* * Bits common to specific registers diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c index f106d21ff581..bb727c2d9337 100644 --- a/arch/arm/mach-omap2/prm44xx.c +++ b/arch/arm/mach-omap2/prm44xx.c @@ -233,10 +233,71 @@ void omap44xx_prm_restore_irqen(u32 *saved_mask) OMAP4_PRM_IRQENABLE_MPU_2_OFFSET); } +/** + * omap44xx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain + * + * Clear any previously-latched I/O wakeup events and ensure that the + * I/O wakeup gates are aligned with the current mux settings. Works + * by asserting WUCLKIN, waiting for WUCLKOUT to be asserted, and then + * deasserting WUCLKIN and waiting for WUCLKOUT to be deasserted. + * No return value. XXX Are the final two steps necessary? + */ +void omap44xx_prm_reconfigure_io_chain(void) +{ + int i = 0; + + /* Trigger WUCLKIN enable */ + omap4_prm_rmw_inst_reg_bits(OMAP4430_WUCLK_CTRL_MASK, + OMAP4430_WUCLK_CTRL_MASK, + OMAP4430_PRM_DEVICE_INST, + OMAP4_PRM_IO_PMCTRL_OFFSET); + omap_test_timeout( + (((omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, + OMAP4_PRM_IO_PMCTRL_OFFSET) & + OMAP4430_WUCLK_STATUS_MASK) >> + OMAP4430_WUCLK_STATUS_SHIFT) == 1), + MAX_IOPAD_LATCH_TIME, i); + if (i == MAX_IOPAD_LATCH_TIME) + pr_warn("PRM: I/O chain clock line assertion timed out\n"); + + /* Trigger WUCLKIN disable */ + omap4_prm_rmw_inst_reg_bits(OMAP4430_WUCLK_CTRL_MASK, 0x0, + OMAP4430_PRM_DEVICE_INST, + OMAP4_PRM_IO_PMCTRL_OFFSET); + omap_test_timeout( + (((omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, + OMAP4_PRM_IO_PMCTRL_OFFSET) & + OMAP4430_WUCLK_STATUS_MASK) >> + OMAP4430_WUCLK_STATUS_SHIFT) == 0), + MAX_IOPAD_LATCH_TIME, i); + if (i == MAX_IOPAD_LATCH_TIME) + pr_warn("PRM: I/O chain clock line deassertion timed out\n"); + + return; +} + +/** + * omap44xx_prm_enable_io_wakeup - enable wakeup events from I/O wakeup latches + * + * Activates the I/O wakeup event latches and allows events logged by + * those latches to signal a wakeup event to the PRCM. For I/O wakeups + * to occur, WAKEUPENABLE bits must be set in the pad mux registers, and + * omap44xx_prm_reconfigure_io_chain() must be called. No return value. + */ +static void __init omap44xx_prm_enable_io_wakeup(void) +{ + omap4_prm_rmw_inst_reg_bits(OMAP4430_GLOBAL_WUEN_MASK, + OMAP4430_GLOBAL_WUEN_MASK, + OMAP4430_PRM_DEVICE_INST, + OMAP4_PRM_IO_PMCTRL_OFFSET); +} + static int __init omap4xxx_prcm_init(void) { - if (cpu_is_omap44xx()) + if (cpu_is_omap44xx()) { + omap44xx_prm_enable_io_wakeup(); return omap_prcm_register_chain_handler(&omap4_prcm_irq_setup); + } return 0; } subsys_initcall(omap4xxx_prcm_init); diff --git a/arch/arm/mach-omap2/prm44xx.h b/arch/arm/mach-omap2/prm44xx.h index 7978092946db..ee72ae6bd8c9 100644 --- a/arch/arm/mach-omap2/prm44xx.h +++ b/arch/arm/mach-omap2/prm44xx.h @@ -763,6 +763,8 @@ extern u32 omap4_prm_vcvp_read(u8 offset); extern void omap4_prm_vcvp_write(u32 val, u8 offset); extern u32 omap4_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset); +extern void omap44xx_prm_reconfigure_io_chain(void); + /* PRM interrupt-related functions */ extern void omap44xx_prm_read_pending_irqs(unsigned long *events); extern void omap44xx_prm_ocp_barrier(void); diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c index 955566eefac4..1da8f03c479e 100644 --- a/arch/arm/mach-omap2/smartreflex-class3.c +++ b/arch/arm/mach-omap2/smartreflex-class3.c @@ -11,36 +11,37 @@ * published by the Free Software Foundation. */ -#include "smartreflex.h" +#include <linux/power/smartreflex.h> +#include "voltage.h" -static int sr_class3_enable(struct voltagedomain *voltdm) +static int sr_class3_enable(struct omap_sr *sr) { - unsigned long volt = voltdm_get_voltage(voltdm); + unsigned long volt = voltdm_get_voltage(sr->voltdm); if (!volt) { - pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n", - __func__, voltdm->name); + pr_warning("%s: Curr voltage unknown. Cannot enable %s\n", + __func__, sr->name); return -ENODATA; } - omap_vp_enable(voltdm); - return sr_enable(voltdm, volt); + omap_vp_enable(sr->voltdm); + return sr_enable(sr->voltdm, volt); } -static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset) +static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset) { - sr_disable_errgen(voltdm); - omap_vp_disable(voltdm); - sr_disable(voltdm); + sr_disable_errgen(sr->voltdm); + omap_vp_disable(sr->voltdm); + sr_disable(sr->voltdm); if (is_volt_reset) - voltdm_reset(voltdm); + voltdm_reset(sr->voltdm); return 0; } -static int sr_class3_configure(struct voltagedomain *voltdm) +static int sr_class3_configure(struct omap_sr *sr) { - return sr_configure_errgen(voltdm); + return sr_configure_errgen(sr->voltdm); } /* SR class3 structure */ diff --git a/arch/arm/mach-omap2/sr_device.c b/arch/arm/mach-omap2/sr_device.c index a503e1e8358c..e107e3915a8a 100644 --- a/arch/arm/mach-omap2/sr_device.c +++ b/arch/arm/mach-omap2/sr_device.c @@ -17,6 +17,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/power/smartreflex.h> #include <linux/err.h> #include <linux/slab.h> @@ -24,7 +25,6 @@ #include <plat/omap_device.h> -#include "smartreflex.h" #include "voltage.h" #include "control.h" #include "pm.h" @@ -36,7 +36,10 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data, struct omap_sr_data *sr_data) { struct omap_sr_nvalue_table *nvalue_table; - int i, count = 0; + int i, j, count = 0; + + sr_data->nvalue_count = 0; + sr_data->nvalue_table = NULL; while (volt_data[count].volt_nominal) count++; @@ -44,8 +47,14 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data, nvalue_table = kzalloc(sizeof(struct omap_sr_nvalue_table)*count, GFP_KERNEL); - for (i = 0; i < count; i++) { + if (!nvalue_table) { + pr_err("OMAP: SmartReflex: cannot allocate memory for n-value table\n"); + return; + } + + for (i = 0, j = 0; i < count; i++) { u32 v; + /* * In OMAP4 the efuse registers are 24 bit aligned. * A __raw_readl will fail for non-32 bit aligned address @@ -58,15 +67,30 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data, omap_ctrl_readb(offset + 1) << 8 | omap_ctrl_readb(offset + 2) << 16; } else { - v = omap_ctrl_readl(volt_data[i].sr_efuse_offs); + v = omap_ctrl_readl(volt_data[i].sr_efuse_offs); } - nvalue_table[i].efuse_offs = volt_data[i].sr_efuse_offs; - nvalue_table[i].nvalue = v; + /* + * Many OMAP SoCs don't have the eFuse values set. + * For example, pretty much all OMAP3xxx before + * ES3.something. + * + * XXX There needs to be some way for board files or + * userspace to add these in. + */ + if (v == 0) + continue; + + nvalue_table[j].nvalue = v; + nvalue_table[j].efuse_offs = volt_data[i].sr_efuse_offs; + nvalue_table[j].errminlimit = volt_data[i].sr_errminlimit; + nvalue_table[j].volt_nominal = volt_data[i].volt_nominal; + + j++; } sr_data->nvalue_table = nvalue_table; - sr_data->nvalue_count = count; + sr_data->nvalue_count = j; } static int __init sr_dev_init(struct omap_hwmod *oh, void *user) @@ -93,6 +117,7 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user) goto exit; } + sr_data->name = oh->name; sr_data->ip_type = oh->class->rev; sr_data->senn_mod = 0x1; sr_data->senp_mod = 0x1; diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-omap2/voltage.h index a7c43c1042be..0ac2caf15941 100644 --- a/arch/arm/mach-omap2/voltage.h +++ b/arch/arm/mach-omap2/voltage.h @@ -16,6 +16,8 @@ #include <linux/err.h> +#include <plat/voltage.h> + #include "vc.h" #include "vp.h" @@ -91,25 +93,6 @@ struct voltagedomain { }; /** - * struct omap_volt_data - Omap voltage specific data. - * @voltage_nominal: The possible voltage value in uV - * @sr_efuse_offs: The offset of the efuse register(from system - * control module base address) from where to read - * the n-target value for the smartreflex module. - * @sr_errminlimit: Error min limit value for smartreflex. This value - * differs at differnet opp and thus is linked - * with voltage. - * @vp_errorgain: Error gain value for the voltage processor. This - * field also differs according to the voltage/opp. - */ -struct omap_volt_data { - u32 volt_nominal; - u32 sr_efuse_offs; - u8 sr_errminlimit; - u8 vp_errgain; -}; - -/** * struct omap_voltdm_pmic - PMIC specific data required by voltage driver. * @slew_rate: PMIC slew rate (in uv/us) * @step_size: PMIC voltage step size (in uv) diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile index e81290c27c65..63b064b5c1d5 100644 --- a/arch/arm/plat-mxc/Makefile +++ b/arch/arm/plat-mxc/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_MXC_ULPI) += ulpi.o obj-$(CONFIG_MXC_USE_EPIT) += epit.o obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o obj-$(CONFIG_CPU_FREQ_IMX) += cpufreq.o +obj-$(CONFIG_CPU_IDLE) += cpuidle.o ifdef CONFIG_SND_IMX_SOC obj-y += ssi-fiq.o obj-y += ssi-fiq-ksym.o diff --git a/arch/arm/plat-mxc/cpuidle.c b/arch/arm/plat-mxc/cpuidle.c new file mode 100644 index 000000000000..d4cb511a44a8 --- /dev/null +++ b/arch/arm/plat-mxc/cpuidle.c @@ -0,0 +1,80 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright 2012 Linaro Ltd. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/cpuidle.h> +#include <linux/err.h> +#include <linux/hrtimer.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/slab.h> + +static struct cpuidle_device __percpu * imx_cpuidle_devices; + +static void __init imx_cpuidle_devices_uninit(void) +{ + int cpu_id; + struct cpuidle_device *dev; + + for_each_possible_cpu(cpu_id) { + dev = per_cpu_ptr(imx_cpuidle_devices, cpu_id); + cpuidle_unregister_device(dev); + } + + free_percpu(imx_cpuidle_devices); +} + +int __init imx_cpuidle_init(struct cpuidle_driver *drv) +{ + struct cpuidle_device *dev; + int cpu_id, ret; + + if (drv->state_count > CPUIDLE_STATE_MAX) { + pr_err("%s: state_count exceeds maximum\n", __func__); + return -EINVAL; + } + + ret = cpuidle_register_driver(drv); + if (ret) { + pr_err("%s: Failed to register cpuidle driver with error: %d\n", + __func__, ret); + return ret; + } + + imx_cpuidle_devices = alloc_percpu(struct cpuidle_device); + if (imx_cpuidle_devices == NULL) { + ret = -ENOMEM; + goto unregister_drv; + } + + /* initialize state data for each cpuidle_device */ + for_each_possible_cpu(cpu_id) { + dev = per_cpu_ptr(imx_cpuidle_devices, cpu_id); + dev->cpu = cpu_id; + dev->state_count = drv->state_count; + + ret = cpuidle_register_device(dev); + if (ret) { + pr_err("%s: Failed to register cpu %u, error: %d\n", + __func__, cpu_id, ret); + goto uninit; + } + } + + return 0; + +uninit: + imx_cpuidle_devices_uninit(); + +unregister_drv: + cpuidle_unregister_driver(drv); + return ret; +} diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h index 7cfcc44537f0..7128e9710417 100644 --- a/arch/arm/plat-mxc/include/mach/common.h +++ b/arch/arm/plat-mxc/include/mach/common.h @@ -54,6 +54,7 @@ extern void imx50_soc_init(void); extern void imx51_soc_init(void); extern void imx53_soc_init(void); extern void imx51_init_late(void); +extern void imx53_init_late(void); extern void epit_timer_init(void __iomem *base, int irq); extern void mxc_timer_init(void __iomem *, int); extern int mx1_clocks_init(unsigned long fref); @@ -96,7 +97,6 @@ enum mx3_cpu_pwr_mode { }; extern void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode); -extern void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode); extern void imx_print_silicon_rev(const char *cpu, int srev); void avic_handle_irq(struct pt_regs *); @@ -147,8 +147,12 @@ extern void imx6q_clock_map_io(void); #ifdef CONFIG_PM extern void imx6q_pm_init(void); +extern void imx51_pm_init(void); +extern void imx53_pm_init(void); #else static inline void imx6q_pm_init(void) {} +static inline void imx51_pm_init(void) {} +static inline void imx53_pm_init(void) {} #endif #ifdef CONFIG_NEON diff --git a/arch/arm/plat-mxc/include/mach/cpuidle.h b/arch/arm/plat-mxc/include/mach/cpuidle.h new file mode 100644 index 000000000000..bc932d1af372 --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/cpuidle.h @@ -0,0 +1,22 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright 2012 Linaro Ltd. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/cpuidle.h> + +#ifdef CONFIG_CPU_IDLE +extern int imx_cpuidle_init(struct cpuidle_driver *drv); +#else +static inline int imx_cpuidle_init(struct cpuidle_driver *drv) +{ + return -ENODEV; +} +#endif diff --git a/arch/arm/plat-mxc/include/mach/hardware.h b/arch/arm/plat-mxc/include/mach/hardware.h index 1d432a75e409..ebf10654bb42 100644 --- a/arch/arm/plat-mxc/include/mach/hardware.h +++ b/arch/arm/plat-mxc/include/mach/hardware.h @@ -50,7 +50,7 @@ * IO 0x00200000+0x100000 -> 0xf4000000+0x100000 * mx21: * AIPI 0x10000000+0x100000 -> 0xf4400000+0x100000 - * SAHB1 0x80000000+0x100000 -> 0xf4000000+0x100000 + * SAHB1 0x80000000+0x100000 -> 0xf5000000+0x100000 * X_MEMC 0xdf000000+0x004000 -> 0xf5f00000+0x004000 * mx25: * AIPS1 0x43f00000+0x100000 -> 0xf5300000+0x100000 @@ -58,47 +58,50 @@ * AVIC 0x68000000+0x100000 -> 0xf5800000+0x100000 * mx27: * AIPI 0x10000000+0x100000 -> 0xf4400000+0x100000 - * SAHB1 0x80000000+0x100000 -> 0xf4000000+0x100000 + * SAHB1 0x80000000+0x100000 -> 0xf5000000+0x100000 * X_MEMC 0xd8000000+0x100000 -> 0xf5c00000+0x100000 * mx31: * AIPS1 0x43f00000+0x100000 -> 0xf5300000+0x100000 * AIPS2 0x53f00000+0x100000 -> 0xf5700000+0x100000 * AVIC 0x68000000+0x100000 -> 0xf5800000+0x100000 - * X_MEMC 0xb8000000+0x010000 -> 0xf4c00000+0x010000 + * X_MEMC 0xb8000000+0x010000 -> 0xf5c00000+0x010000 * SPBA0 0x50000000+0x100000 -> 0xf5400000+0x100000 * mx35: * AIPS1 0x43f00000+0x100000 -> 0xf5300000+0x100000 * AIPS2 0x53f00000+0x100000 -> 0xf5700000+0x100000 * AVIC 0x68000000+0x100000 -> 0xf5800000+0x100000 - * X_MEMC 0xb8000000+0x010000 -> 0xf4c00000+0x010000 + * X_MEMC 0xb8000000+0x010000 -> 0xf5c00000+0x010000 * SPBA0 0x50000000+0x100000 -> 0xf5400000+0x100000 * mx50: * TZIC 0x0fffc000+0x004000 -> 0xf4bfc000+0x004000 - * SPBA0 0x50000000+0x100000 -> 0xf5400000+0x100000 * AIPS1 0x53f00000+0x100000 -> 0xf5700000+0x100000 + * SPBA0 0x50000000+0x100000 -> 0xf5400000+0x100000 * AIPS2 0x63f00000+0x100000 -> 0xf5300000+0x100000 * mx51: - * TZIC 0xe0000000+0x004000 -> 0xf5000000+0x004000 + * TZIC 0x0fffc000+0x004000 -> 0xf4bfc000+0x004000 * IRAM 0x1ffe0000+0x020000 -> 0xf4fe0000+0x020000 + * DEBUG 0x60000000+0x100000 -> 0xf5000000+0x100000 * SPBA0 0x70000000+0x100000 -> 0xf5400000+0x100000 * AIPS1 0x73f00000+0x100000 -> 0xf5700000+0x100000 - * AIPS2 0x83f00000+0x100000 -> 0xf4300000+0x100000 + * AIPS2 0x83f00000+0x100000 -> 0xf5300000+0x100000 * mx53: * TZIC 0x0fffc000+0x004000 -> 0xf4bfc000+0x004000 + * DEBUG 0x40000000+0x100000 -> 0xf5000000+0x100000 * SPBA0 0x50000000+0x100000 -> 0xf5400000+0x100000 * AIPS1 0x53f00000+0x100000 -> 0xf5700000+0x100000 * AIPS2 0x63f00000+0x100000 -> 0xf5300000+0x100000 * mx6q: - * SCU 0x00a00000+0x001000 -> 0xf4000000+0x001000 + * SCU 0x00a00000+0x004000 -> 0xf4000000+0x004000 * CCM 0x020c4000+0x004000 -> 0xf42c4000+0x004000 - * ANATOP 0x020c8000+0x001000 -> 0xf42c8000+0x001000 + * ANATOP 0x020c8000+0x004000 -> 0xf42c8000+0x004000 * UART4 0x021f0000+0x004000 -> 0xf42f0000+0x004000 */ #define IMX_IO_P2V(x) ( \ - 0xf4000000 + \ + (((x) & 0x80000000) >> 7) | \ + (0xf4000000 + \ (((x) & 0x50000000) >> 6) + \ (((x) & 0x0b000000) >> 4) + \ - (((x) & 0x000fffff))) + (((x) & 0x000fffff)))) #define IMX_IO_ADDRESS(x) IOMEM(IMX_IO_P2V(x)) diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c index c60a7e416385..c2193178210b 100644 --- a/arch/arm/plat-mxc/tzic.c +++ b/arch/arm/plat-mxc/tzic.c @@ -202,6 +202,10 @@ void __init tzic_init_irq(void __iomem *irqbase) * tzic_enable_wake() - enable wakeup interrupt * * @return 0 if successful; non-zero otherwise + * + * This function provides an interrupt synchronization point that is required + * by tzic enabled platforms before entering imx specific low power modes (ie, + * those low power modes beyond the WAIT_CLOCKED basic ARM WFI only mode). */ int tzic_enable_wake(void) { diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index dcfb506a592e..dd36eba9506c 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -45,31 +45,30 @@ config OMAP_DEBUG_LEDS depends on OMAP_DEBUG_DEVICES default y if LEDS_CLASS -config OMAP_SMARTREFLEX - bool "SmartReflex support" - depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM +config POWER_AVS_OMAP + bool "AVS(Adaptive Voltage Scaling) support for OMAP IP versions 1&2" + depends on POWER_AVS && (ARCH_OMAP3 || ARCH_OMAP4) && PM help - Say Y if you want to enable SmartReflex. - - SmartReflex can perform continuous dynamic voltage - scaling around the nominal operating point voltage - according to silicon characteristics and operating - conditions. Enabling SmartReflex reduces power - consumption. + Say Y to enable AVS(Adaptive Voltage Scaling) + support on OMAP containing the version 1 or + version 2 of the SmartReflex IP. + V1 is the 65nm version used in OMAP3430. + V2 is the update for the 45nm version of the IP used in OMAP3630 + and OMAP4430 Please note, that by default SmartReflex is only - initialized. To enable the automatic voltage - compensation for vdd mpu and vdd core from user space, + initialized and not enabled. To enable the automatic voltage + compensation for vdd mpu and vdd core from user space, user must write 1 to - /debug/voltage/vdd_<X>/smartreflex/autocomp, - where X is mpu or core for OMAP3. + /debug/smartreflex/sr_<X>/autocomp, + where X is mpu_iva or core for OMAP3. Optionally autocompensation can be enabled in the kernel by default during system init via the enable_on_init flag which an be passed as platform data to the smartreflex driver. -config OMAP_SMARTREFLEX_CLASS3 +config POWER_AVS_OMAP_CLASS3 bool "Class 3 mode of Smartreflex Implementation" - depends on OMAP_SMARTREFLEX && TWL4030_CORE + depends on POWER_AVS_OMAP && TWL4030_CORE help Say Y to enable Class 3 implementation of Smartreflex diff --git a/arch/arm/plat-omap/include/plat/voltage.h b/arch/arm/plat-omap/include/plat/voltage.h index 0a6a482ec014..5be4d5def427 100644 --- a/arch/arm/plat-omap/include/plat/voltage.h +++ b/arch/arm/plat-omap/include/plat/voltage.h @@ -11,10 +11,29 @@ #ifndef __ARCH_ARM_OMAP_VOLTAGE_H #define __ARCH_ARM_OMAP_VOLTAGE_H +/** + * struct omap_volt_data - Omap voltage specific data. + * @voltage_nominal: The possible voltage value in uV + * @sr_efuse_offs: The offset of the efuse register(from system + * control module base address) from where to read + * the n-target value for the smartreflex module. + * @sr_errminlimit: Error min limit value for smartreflex. This value + * differs at differnet opp and thus is linked + * with voltage. + * @vp_errorgain: Error gain value for the voltage processor. This + * field also differs according to the voltage/opp. + */ +struct omap_volt_data { + u32 volt_nominal; + u32 sr_efuse_offs; + u8 sr_errminlimit; + u8 vp_errgain; +}; struct voltagedomain; struct voltagedomain *voltdm_lookup(const char *name); int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt); unsigned long voltdm_get_voltage(struct voltagedomain *voltdm); - +struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm, + unsigned long volt); #endif diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index e3a3b4956f08..70b4a979a6ff 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -310,3 +310,5 @@ config AB8500_BATTERY_THERM_ON_BATCTRL Say Y to enable battery temperature measurements using thermistor connected on BATCTRL ADC. endif # POWER_SUPPLY + +source "drivers/power/avs/Kconfig" diff --git a/drivers/power/Makefile b/drivers/power/Makefile index b6b243416c0e..ee58afb1e71f 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -43,4 +43,5 @@ obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o +obj-$(CONFIG_POWER_AVS) += avs/ obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig new file mode 100644 index 000000000000..2a1008b61121 --- /dev/null +++ b/drivers/power/avs/Kconfig @@ -0,0 +1,12 @@ +menuconfig POWER_AVS + bool "Adaptive Voltage Scaling class support" + help + AVS is a power management technique which finely controls the + operating voltage of a device in order to optimize (i.e. reduce) + its power consumption. + At a given operating point the voltage is adapted depending on + static factors (chip manufacturing process) and dynamic factors + (temperature depending performance). + AVS is also called SmartReflex on OMAP devices. + + Say Y here to enable Adaptive Voltage Scaling class support. diff --git a/drivers/power/avs/Makefile b/drivers/power/avs/Makefile new file mode 100644 index 000000000000..0843386a6c19 --- /dev/null +++ b/drivers/power/avs/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_POWER_AVS_OMAP) += smartreflex.o diff --git a/arch/arm/mach-omap2/smartreflex.c b/drivers/power/avs/smartreflex.c index 008fbd7b9352..44efc6e202af 100644 --- a/arch/arm/mach-omap2/smartreflex.c +++ b/drivers/power/avs/smartreflex.c @@ -3,7 +3,7 @@ * * Author: Thara Gopinath <thara@ti.com> * - * Copyright (C) 2010 Texas Instruments, Inc. + * Copyright (C) 2012 Texas Instruments, Inc. * Thara Gopinath <thara@ti.com> * * Copyright (C) 2008 Nokia Corporation @@ -25,39 +25,12 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/pm_runtime.h> - -#include "common.h" - -#include "pm.h" -#include "smartreflex.h" +#include <linux/power/smartreflex.h> #define SMARTREFLEX_NAME_LEN 16 #define NVALUE_NAME_LEN 40 #define SR_DISABLE_TIMEOUT 200 -struct omap_sr { - struct list_head node; - struct platform_device *pdev; - struct omap_sr_nvalue_table *nvalue_table; - struct voltagedomain *voltdm; - struct dentry *dbg_dir; - unsigned int irq; - int srid; - int ip_type; - int nvalue_count; - bool autocomp_active; - u32 clk_length; - u32 err_weight; - u32 err_minlimit; - u32 err_maxlimit; - u32 accum_data; - u32 senn_avgweight; - u32 senp_avgweight; - u32 senp_mod; - u32 senn_mod; - void __iomem *base; -}; - /* sr_list contains all the instances of smartreflex module */ static LIST_HEAD(sr_list); @@ -148,7 +121,7 @@ static irqreturn_t sr_interrupt(int irq, void *data) } if (sr_class->notify) - sr_class->notify(sr_info->voltdm, status); + sr_class->notify(sr_info, status); return IRQ_HANDLED; } @@ -207,7 +180,7 @@ static void sr_set_regfields(struct omap_sr *sr) sr->err_weight = OMAP3430_SR_ERRWEIGHT; sr->err_maxlimit = OMAP3430_SR_ERRMAXLIMIT; sr->accum_data = OMAP3430_SR_ACCUMDATA; - if (!(strcmp(sr->voltdm->name, "mpu"))) { + if (!(strcmp(sr->name, "smartreflex_mpu_iva"))) { sr->senn_avgweight = OMAP3430_SR1_SENNAVGWEIGHT; sr->senp_avgweight = OMAP3430_SR1_SENPAVGWEIGHT; } else { @@ -226,7 +199,7 @@ static void sr_start_vddautocomp(struct omap_sr *sr) return; } - if (!sr_class->enable(sr->voltdm)) + if (!sr_class->enable(sr)) sr->autocomp_active = true; } @@ -240,7 +213,7 @@ static void sr_stop_vddautocomp(struct omap_sr *sr) } if (sr->autocomp_active) { - sr_class->disable(sr->voltdm, 1); + sr_class->disable(sr, 1); sr->autocomp_active = false; } } @@ -258,19 +231,13 @@ static void sr_stop_vddautocomp(struct omap_sr *sr) */ static int sr_late_init(struct omap_sr *sr_info) { - char *name; struct omap_sr_data *pdata = sr_info->pdev->dev.platform_data; struct resource *mem; int ret = 0; if (sr_class->notify && sr_class->notify_flags && sr_info->irq) { - name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name); - if (name == NULL) { - ret = -ENOMEM; - goto error; - } ret = request_irq(sr_info->irq, sr_interrupt, - 0, name, sr_info); + 0, sr_info->name, sr_info); if (ret) goto error; disable_irq(sr_info->irq); @@ -289,7 +256,6 @@ error: dev_err(&sr_info->pdev->dev, "%s: ERROR in registering" "interrupt handler. Smartreflex will" "not function as desired\n", __func__); - kfree(name); kfree(sr_info); return ret; @@ -320,9 +286,9 @@ static void sr_v1_disable(struct omap_sr *sr) * Wait for SR to be disabled. * wait until ERRCONFIG.MCUDISACKINTST = 1. Typical latency is 1us. */ - omap_test_timeout((sr_read_reg(sr, ERRCONFIG_V1) & - ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT, - timeout); + sr_test_cond_timeout((sr_read_reg(sr, ERRCONFIG_V1) & + ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT, + timeout); if (timeout >= SR_DISABLE_TIMEOUT) dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n", @@ -365,9 +331,9 @@ static void sr_v2_disable(struct omap_sr *sr) * Wait for SR to be disabled. * wait until IRQSTATUS.MCUDISACKINTST = 1. Typical latency is 1us. */ - omap_test_timeout((sr_read_reg(sr, IRQSTATUS) & - IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT, - timeout); + sr_test_cond_timeout((sr_read_reg(sr, IRQSTATUS) & + IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT, + timeout); if (timeout >= SR_DISABLE_TIMEOUT) dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n", @@ -378,22 +344,23 @@ static void sr_v2_disable(struct omap_sr *sr) sr_write_reg(sr, IRQSTATUS, IRQSTATUS_MCUDISABLEACKINT); } -static u32 sr_retrieve_nvalue(struct omap_sr *sr, u32 efuse_offs) +static struct omap_sr_nvalue_table *sr_retrieve_nvalue_row( + struct omap_sr *sr, u32 efuse_offs) { int i; if (!sr->nvalue_table) { dev_warn(&sr->pdev->dev, "%s: Missing ntarget value table\n", __func__); - return 0; + return NULL; } for (i = 0; i < sr->nvalue_count; i++) { if (sr->nvalue_table[i].efuse_offs == efuse_offs) - return sr->nvalue_table[i].nvalue; + return &sr->nvalue_table[i]; } - return 0; + return NULL; } /* Public Functions */ @@ -419,8 +386,7 @@ int sr_configure_errgen(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return PTR_ERR(sr); } @@ -487,8 +453,7 @@ int sr_disable_errgen(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return PTR_ERR(sr); } @@ -538,8 +503,7 @@ int sr_configure_minmax(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return PTR_ERR(sr); } @@ -620,12 +584,11 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt) { struct omap_volt_data *volt_data; struct omap_sr *sr = _sr_lookup(voltdm); - u32 nvalue_reciprocal; + struct omap_sr_nvalue_table *nvalue_row; int ret; if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return PTR_ERR(sr); } @@ -637,16 +600,16 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt) return PTR_ERR(volt_data); } - nvalue_reciprocal = sr_retrieve_nvalue(sr, volt_data->sr_efuse_offs); + nvalue_row = sr_retrieve_nvalue_row(sr, volt_data->sr_efuse_offs); - if (!nvalue_reciprocal) { - dev_warn(&sr->pdev->dev, "%s: NVALUE = 0 at voltage %ld\n", - __func__, volt); + if (!nvalue_row) { + dev_warn(&sr->pdev->dev, "%s: failure getting SR data for this voltage %ld\n", + __func__, volt); return -ENODATA; } /* errminlimit is opp dependent and hence linked to voltage */ - sr->err_minlimit = volt_data->sr_errminlimit; + sr->err_minlimit = nvalue_row->errminlimit; pm_runtime_get_sync(&sr->pdev->dev); @@ -655,11 +618,11 @@ int sr_enable(struct voltagedomain *voltdm, unsigned long volt) return 0; /* Configure SR */ - ret = sr_class->configure(voltdm); + ret = sr_class->configure(sr); if (ret) return ret; - sr_write_reg(sr, NVALUERECIPROCAL, nvalue_reciprocal); + sr_write_reg(sr, NVALUERECIPROCAL, nvalue_row->nvalue); /* SRCONFIG - enable SR */ sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, SRCONFIG_SRENABLE); @@ -678,8 +641,7 @@ void sr_disable(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return; } @@ -759,8 +721,7 @@ void omap_sr_enable(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return; } @@ -773,7 +734,7 @@ void omap_sr_enable(struct voltagedomain *voltdm) return; } - sr_class->enable(voltdm); + sr_class->enable(sr); } /** @@ -792,8 +753,7 @@ void omap_sr_disable(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return; } @@ -806,7 +766,7 @@ void omap_sr_disable(struct voltagedomain *voltdm) return; } - sr_class->disable(voltdm, 0); + sr_class->disable(sr, 0); } /** @@ -825,8 +785,7 @@ void omap_sr_disable_reset_volt(struct voltagedomain *voltdm) struct omap_sr *sr = _sr_lookup(voltdm); if (IS_ERR(sr)) { - pr_warning("%s: omap_sr struct for sr_%s not found\n", - __func__, voltdm->name); + pr_warning("%s: omap_sr struct for voltdm not found\n", __func__); return; } @@ -839,7 +798,7 @@ void omap_sr_disable_reset_volt(struct voltagedomain *voltdm) return; } - sr_class->disable(voltdm, 1); + sr_class->disable(sr, 1); } /** @@ -911,9 +870,7 @@ static int __init omap_sr_probe(struct platform_device *pdev) struct omap_sr_data *pdata = pdev->dev.platform_data; struct resource *mem, *irq; struct dentry *nvalue_dir; - struct omap_volt_data *volt_data; int i, ret = 0; - char *name; sr_info = kzalloc(sizeof(struct omap_sr), GFP_KERNEL); if (!sr_info) { @@ -950,6 +907,14 @@ static int __init omap_sr_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_irq_safe(&pdev->dev); + sr_info->name = kasprintf(GFP_KERNEL, "%s", pdata->name); + if (!sr_info->name) { + dev_err(&pdev->dev, "%s: Unable to alloc SR instance name\n", + __func__); + ret = -ENOMEM; + goto err_release_region; + } + sr_info->pdev = pdev; sr_info->srid = pdev->id; sr_info->voltdm = pdata->voltdm; @@ -997,20 +962,12 @@ static int __init omap_sr_probe(struct platform_device *pdev) } } - name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name); - if (!name) { - dev_err(&pdev->dev, "%s: Unable to alloc debugfs name\n", - __func__); - ret = -ENOMEM; - goto err_iounmap; - } - sr_info->dbg_dir = debugfs_create_dir(name, sr_dbg_dir); - kfree(name); + sr_info->dbg_dir = debugfs_create_dir(sr_info->name, sr_dbg_dir); if (IS_ERR_OR_NULL(sr_info->dbg_dir)) { dev_err(&pdev->dev, "%s: Unable to create debugfs directory\n", __func__); ret = PTR_ERR(sr_info->dbg_dir); - goto err_iounmap; + goto err_free_name; } (void) debugfs_create_file("autocomp", S_IRUGO | S_IWUSR, @@ -1019,8 +976,6 @@ static int __init omap_sr_probe(struct platform_device *pdev) &sr_info->err_weight); (void) debugfs_create_x32("errmaxlimit", S_IRUGO, sr_info->dbg_dir, &sr_info->err_maxlimit); - (void) debugfs_create_x32("errminlimit", S_IRUGO, sr_info->dbg_dir, - &sr_info->err_minlimit); nvalue_dir = debugfs_create_dir("nvalue", sr_info->dbg_dir); if (IS_ERR_OR_NULL(nvalue_dir)) { @@ -1030,12 +985,10 @@ static int __init omap_sr_probe(struct platform_device *pdev) goto err_debugfs; } - omap_voltage_get_volttable(sr_info->voltdm, &volt_data); - if (!volt_data) { - dev_warn(&pdev->dev, "%s: No Voltage table for the" - " corresponding vdd vdd_%s. Cannot create debugfs" - "entries for n-values\n", - __func__, sr_info->voltdm->name); + if (sr_info->nvalue_count == 0 || !sr_info->nvalue_table) { + dev_warn(&pdev->dev, "%s: %s: No Voltage table for the corresponding vdd. Cannot create debugfs entries for n-values\n", + __func__, sr_info->name); + ret = -ENODATA; goto err_debugfs; } @@ -1043,16 +996,23 @@ static int __init omap_sr_probe(struct platform_device *pdev) for (i = 0; i < sr_info->nvalue_count; i++) { char name[NVALUE_NAME_LEN + 1]; - snprintf(name, sizeof(name), "volt_%d", - volt_data[i].volt_nominal); + snprintf(name, sizeof(name), "volt_%lu", + sr_info->nvalue_table[i].volt_nominal); (void) debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir, &(sr_info->nvalue_table[i].nvalue)); + snprintf(name, sizeof(name), "errminlimit_%lu", + sr_info->nvalue_table[i].volt_nominal); + (void) debugfs_create_x32(name, S_IRUGO | S_IWUSR, nvalue_dir, + &(sr_info->nvalue_table[i].errminlimit)); + } return ret; err_debugfs: debugfs_remove_recursive(sr_info->dbg_dir); +err_free_name: + kfree(sr_info->name); err_iounmap: list_del(&sr_info->node); iounmap(sr_info->base); @@ -1089,6 +1049,7 @@ static int __devexit omap_sr_remove(struct platform_device *pdev) list_del(&sr_info->node); iounmap(sr_info->base); + kfree(sr_info->name); kfree(sr_info); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(mem->start, resource_size(mem)); diff --git a/drivers/w1/masters/Kconfig b/drivers/w1/masters/Kconfig index 979d6eed9a0f..5ceb1cd50195 100644 --- a/drivers/w1/masters/Kconfig +++ b/drivers/w1/masters/Kconfig @@ -60,7 +60,7 @@ config W1_MASTER_GPIO config HDQ_MASTER_OMAP tristate "OMAP HDQ driver" - depends on SOC_OMAP2430 || ARCH_OMAP3 + depends on ARCH_OMAP2PLUS help Say Y here if you want support for the 1-wire or HDQ Interface on an OMAP processor. diff --git a/drivers/w1/masters/omap_hdq.c b/drivers/w1/masters/omap_hdq.c index 5ef385bfed18..291897c881be 100644 --- a/drivers/w1/masters/omap_hdq.c +++ b/drivers/w1/masters/omap_hdq.c @@ -1,7 +1,7 @@ /* * drivers/w1/masters/omap_hdq.c * - * Copyright (C) 2007 Texas Instruments, Inc. + * Copyright (C) 2007,2012 Texas Instruments, Inc. * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any @@ -14,9 +14,9 @@ #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/err.h> -#include <linux/clk.h> #include <linux/io.h> #include <linux/sched.h> +#include <linux/pm_runtime.h> #include <asm/irq.h> #include <mach/hardware.h> @@ -61,8 +61,6 @@ struct hdq_data { /* lock status update */ struct mutex hdq_mutex; int hdq_usecount; - struct clk *hdq_ick; - struct clk *hdq_fck; u8 hdq_irqstatus; /* device lock */ spinlock_t hdq_spinlock; @@ -102,20 +100,20 @@ static struct w1_bus_master omap_w1_master = { /* HDQ register I/O routines */ static inline u8 hdq_reg_in(struct hdq_data *hdq_data, u32 offset) { - return __raw_readb(hdq_data->hdq_base + offset); + return __raw_readl(hdq_data->hdq_base + offset); } static inline void hdq_reg_out(struct hdq_data *hdq_data, u32 offset, u8 val) { - __raw_writeb(val, hdq_data->hdq_base + offset); + __raw_writel(val, hdq_data->hdq_base + offset); } static inline u8 hdq_reg_merge(struct hdq_data *hdq_data, u32 offset, u8 val, u8 mask) { - u8 new_val = (__raw_readb(hdq_data->hdq_base + offset) & ~mask) + u8 new_val = (__raw_readl(hdq_data->hdq_base + offset) & ~mask) | (val & mask); - __raw_writeb(new_val, hdq_data->hdq_base + offset); + __raw_writel(new_val, hdq_data->hdq_base + offset); return new_val; } @@ -419,17 +417,8 @@ static int omap_hdq_get(struct hdq_data *hdq_data) hdq_data->hdq_usecount++; try_module_get(THIS_MODULE); if (1 == hdq_data->hdq_usecount) { - if (clk_enable(hdq_data->hdq_ick)) { - dev_dbg(hdq_data->dev, "Can not enable ick\n"); - ret = -ENODEV; - goto clk_err; - } - if (clk_enable(hdq_data->hdq_fck)) { - dev_dbg(hdq_data->dev, "Can not enable fck\n"); - clk_disable(hdq_data->hdq_ick); - ret = -ENODEV; - goto clk_err; - } + + pm_runtime_get_sync(hdq_data->dev); /* make sure HDQ is out of reset */ if (!(hdq_reg_in(hdq_data, OMAP_HDQ_SYSSTATUS) & @@ -450,9 +439,6 @@ static int omap_hdq_get(struct hdq_data *hdq_data) } } -clk_err: - clk_put(hdq_data->hdq_ick); - clk_put(hdq_data->hdq_fck); out: mutex_unlock(&hdq_data->hdq_mutex); rtn: @@ -475,10 +461,8 @@ static int omap_hdq_put(struct hdq_data *hdq_data) } else { hdq_data->hdq_usecount--; module_put(THIS_MODULE); - if (0 == hdq_data->hdq_usecount) { - clk_disable(hdq_data->hdq_ick); - clk_disable(hdq_data->hdq_fck); - } + if (0 == hdq_data->hdq_usecount) + pm_runtime_put_sync(hdq_data->dev); } mutex_unlock(&hdq_data->hdq_mutex); @@ -591,35 +575,11 @@ static int __devinit omap_hdq_probe(struct platform_device *pdev) goto err_ioremap; } - /* get interface & functional clock objects */ - hdq_data->hdq_ick = clk_get(&pdev->dev, "ick"); - if (IS_ERR(hdq_data->hdq_ick)) { - dev_dbg(&pdev->dev, "Can't get HDQ ick clock object\n"); - ret = PTR_ERR(hdq_data->hdq_ick); - goto err_ick; - } - - hdq_data->hdq_fck = clk_get(&pdev->dev, "fck"); - if (IS_ERR(hdq_data->hdq_fck)) { - dev_dbg(&pdev->dev, "Can't get HDQ fck clock object\n"); - ret = PTR_ERR(hdq_data->hdq_fck); - goto err_fck; - } - hdq_data->hdq_usecount = 0; mutex_init(&hdq_data->hdq_mutex); - if (clk_enable(hdq_data->hdq_ick)) { - dev_dbg(&pdev->dev, "Can not enable ick\n"); - ret = -ENODEV; - goto err_intfclk; - } - - if (clk_enable(hdq_data->hdq_fck)) { - dev_dbg(&pdev->dev, "Can not enable fck\n"); - ret = -ENODEV; - goto err_fnclk; - } + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); rev = hdq_reg_in(hdq_data, OMAP_HDQ_REVISION); dev_info(&pdev->dev, "OMAP HDQ Hardware Rev %c.%c. Driver in %s mode\n", @@ -641,9 +601,7 @@ static int __devinit omap_hdq_probe(struct platform_device *pdev) omap_hdq_break(hdq_data); - /* don't clock the HDQ until it is needed */ - clk_disable(hdq_data->hdq_ick); - clk_disable(hdq_data->hdq_fck); + pm_runtime_put_sync(&pdev->dev); omap_w1_master.data = hdq_data; @@ -655,20 +613,11 @@ static int __devinit omap_hdq_probe(struct platform_device *pdev) return 0; -err_w1: err_irq: - clk_disable(hdq_data->hdq_fck); - -err_fnclk: - clk_disable(hdq_data->hdq_ick); - -err_intfclk: - clk_put(hdq_data->hdq_fck); - -err_fck: - clk_put(hdq_data->hdq_ick); + pm_runtime_put_sync(&pdev->dev); +err_w1: + pm_runtime_disable(&pdev->dev); -err_ick: iounmap(hdq_data->hdq_base); err_ioremap: @@ -696,8 +645,7 @@ static int omap_hdq_remove(struct platform_device *pdev) mutex_unlock(&hdq_data->hdq_mutex); /* remove module dependency */ - clk_put(hdq_data->hdq_ick); - clk_put(hdq_data->hdq_fck); + pm_runtime_disable(&pdev->dev); free_irq(INT_24XX_HDQ_IRQ, hdq_data); platform_set_drvdata(pdev, NULL); iounmap(hdq_data->hdq_base); diff --git a/arch/arm/mach-omap2/smartreflex.h b/include/linux/power/smartreflex.h index 5809141171f8..3101e62a1213 100644 --- a/arch/arm/mach-omap2/smartreflex.h +++ b/include/linux/power/smartreflex.h @@ -17,12 +17,13 @@ * published by the Free Software Foundation. */ -#ifndef __ASM_ARM_OMAP_SMARTREFLEX_H -#define __ASM_ARM_OMAP_SMARTREFLEX_H +#ifndef __POWER_SMARTREFLEX_H +#define __POWER_SMARTREFLEX_H +#include <linux/types.h> #include <linux/platform_device.h> - -#include "voltage.h" +#include <linux/delay.h> +#include <plat/voltage.h> /* * Different Smartreflex IPs version. The v1 is the 65nm version used in @@ -142,6 +143,51 @@ #define OMAP3430_SR_ERRWEIGHT 0x04 #define OMAP3430_SR_ERRMAXLIMIT 0x02 +struct omap_sr { + char *name; + struct list_head node; + struct platform_device *pdev; + struct omap_sr_nvalue_table *nvalue_table; + struct voltagedomain *voltdm; + struct dentry *dbg_dir; + unsigned int irq; + int srid; + int ip_type; + int nvalue_count; + bool autocomp_active; + u32 clk_length; + u32 err_weight; + u32 err_minlimit; + u32 err_maxlimit; + u32 accum_data; + u32 senn_avgweight; + u32 senp_avgweight; + u32 senp_mod; + u32 senn_mod; + void __iomem *base; +}; + +/** + * test_cond_timeout - busy-loop, testing a condition + * @cond: condition to test until it evaluates to true + * @timeout: maximum number of microseconds in the timeout + * @index: loop index (integer) + * + * Loop waiting for @cond to become true or until at least @timeout + * microseconds have passed. To use, define some integer @index in the + * calling code. After running, if @index == @timeout, then the loop has + * timed out. + * + * Copied from omap_test_timeout */ +#define sr_test_cond_timeout(cond, timeout, index) \ +({ \ + for (index = 0; index < timeout; index++) { \ + if (cond) \ + break; \ + udelay(1); \ + } \ +}) + /** * struct omap_sr_pmic_data - Strucutre to be populated by pmic code to pass * pmic specific info to smartreflex driver @@ -161,7 +207,7 @@ struct omap_smartreflex_dev_attr { const char *sensor_voltdm_name; }; -#ifdef CONFIG_OMAP_SMARTREFLEX +#ifdef CONFIG_POWER_AVS_OMAP /* * The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR. * The smartreflex class driver should pass the class type. @@ -186,10 +232,10 @@ struct omap_smartreflex_dev_attr { * based decisions. */ struct omap_sr_class_data { - int (*enable)(struct voltagedomain *voltdm); - int (*disable)(struct voltagedomain *voltdm, int is_volt_reset); - int (*configure)(struct voltagedomain *voltdm); - int (*notify)(struct voltagedomain *voltdm, u32 status); + int (*enable)(struct omap_sr *sr); + int (*disable)(struct omap_sr *sr, int is_volt_reset); + int (*configure)(struct omap_sr *sr); + int (*notify)(struct omap_sr *sr, u32 status); u8 notify_flags; u8 class_type; }; @@ -197,17 +243,22 @@ struct omap_sr_class_data { /** * struct omap_sr_nvalue_table - Smartreflex n-target value info * - * @efuse_offs: The offset of the efuse where n-target values are stored. - * @nvalue: The n-target value. + * @efuse_offs: The offset of the efuse where n-target values are stored. + * @nvalue: The n-target value. + * @errminlimit: The value of the ERRMINLIMIT bitfield for this n-target + * @volt_nominal: microvolts DC that the VDD is initially programmed to */ struct omap_sr_nvalue_table { u32 efuse_offs; u32 nvalue; + u32 errminlimit; + unsigned long volt_nominal; }; /** * struct omap_sr_data - Smartreflex platform data. * + * @name: instance name * @ip_type: Smartreflex IP type. * @senp_mod: SENPENABLE value for the sr * @senn_mod: SENNENABLE value for sr @@ -219,6 +270,7 @@ struct omap_sr_nvalue_table { * @voltdm: Pointer to the voltage domain associated with the SR */ struct omap_sr_data { + const char *name; int ip_type; u32 senp_mod; u32 senn_mod; |