diff options
| -rw-r--r-- | Documentation/arm/OMAP/omap_pm | 25 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 7 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/io.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_opp_data.h | 72 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/opp.c | 93 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/opp3xxx_data.c | 107 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/opp4xxx_data.c | 57 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pm.h | 14 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap-pm.h | 31 | ||||
| -rw-r--r-- | arch/arm/plat-omap/omap-pm-noop.c | 11 |
11 files changed, 391 insertions, 33 deletions
diff --git a/Documentation/arm/OMAP/omap_pm b/Documentation/arm/OMAP/omap_pm index 5389440aade3..9012bb039094 100644 --- a/Documentation/arm/OMAP/omap_pm +++ b/Documentation/arm/OMAP/omap_pm @@ -127,3 +127,28 @@ implementation needs: 10. (*pdata->cpu_set_freq)(unsigned long f) 11. (*pdata->cpu_get_freq)(void) + +Customizing OPP for platform +============================ +Defining CONFIG_PM should enable OPP layer for the silicon +and the registration of OPP table should take place automatically. +However, in special cases, the default OPP table may need to be +tweaked, for e.g.: + * enable default OPPs which are disabled by default, but which + could be enabled on a platform + * Disable an unsupported OPP on the platform + * Define and add a custom opp table entry +in these cases, the board file needs to do additional steps as follows: +arch/arm/mach-omapx/board-xyz.c + #include "pm.h" + .... + static void __init omap_xyz_init_irq(void) + { + .... + /* Initialize the default table */ + omapx_opp_init(); + /* Do customization to the defaults */ + .... + } +NOTE: omapx_opp_init will be omap3_opp_init or as required +based on the omap family. diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 92b004ba5a10..3e8c9e859f98 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -35,6 +35,8 @@ config ARCH_OMAP3 select CPU_V7 select USB_ARCH_HAS_EHCI select ARM_L1_CACHE_SHIFT_6 if !ARCH_OMAP4 + select ARCH_HAS_OPP + select PM_OPP if PM config ARCH_OMAP4 bool "TI OMAP4" @@ -44,6 +46,8 @@ config ARCH_OMAP4 select ARM_GIC select PL310_ERRATA_588369 select ARM_ERRATA_720789 + select ARCH_HAS_OPP + select PM_OPP if PM comment "OMAP Core Type" depends on ARCH_OMAP2 diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index cdfb5faaec9d..1b699d3c6cb8 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -49,6 +49,13 @@ obj-$(CONFIG_ARCH_OMAP4) += mux44xx.o obj-$(CONFIG_ARCH_OMAP2) += sdrc2xxx.o # obj-$(CONFIG_ARCH_OMAP3) += sdrc3xxx.o +# OPP table initialization +ifeq ($(CONFIG_PM_OPP),y) +obj-y += opp.o +obj-$(CONFIG_ARCH_OMAP3) += opp3xxx_data.o +obj-$(CONFIG_ARCH_OMAP4) += opp4xxx_data.o +endif + # Power Management ifeq ($(CONFIG_PM),y) obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 4605d5073a9b..5577ab2faad2 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -347,8 +347,7 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0, else if (cpu_is_omap44xx()) omap44xx_hwmod_init(); - /* The OPP tables have to be registered before a clk init */ - omap_pm_if_early_init(mpu_opps, dsp_opps, l3_opps); + omap_pm_if_early_init(); if (cpu_is_omap2420()) omap2420_clk_init(); diff --git a/arch/arm/mach-omap2/omap_opp_data.h b/arch/arm/mach-omap2/omap_opp_data.h new file mode 100644 index 000000000000..46ac27dd6c84 --- /dev/null +++ b/arch/arm/mach-omap2/omap_opp_data.h @@ -0,0 +1,72 @@ +/* + * OMAP SoC specific OPP Data helpers + * + * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/ + * Nishanth Menon + * Kevin Hilman + * Copyright (C) 2010 Nokia Corporation. + * Eduardo Valentin + * + * 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. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H +#define __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H + +#include <plat/omap_hwmod.h> + +/* + * *BIG FAT WARNING*: + * USE the following ONLY in opp data initialization common to an SoC. + * DO NOT USE these in board files/pm core etc. + */ + +/** + * struct omap_opp_def - OMAP OPP Definition + * @hwmod_name: Name of the hwmod for this domain + * @freq: Frequency in hertz corresponding to this OPP + * @u_volt: Nominal voltage in microvolts corresponding to this OPP + * @default_available: True/false - is this OPP available by default + * + * OMAP SOCs have a standard set of tuples consisting of frequency and voltage + * pairs that the device will support per voltage domain. This is called + * Operating Points or OPP. The actual definitions of OMAP Operating Points + * varies over silicon within the same family of devices. For a specific + * domain, you can have a set of {frequency, voltage} pairs and this is denoted + * by an array of omap_opp_def. As the kernel boots and more information is + * available, a set of these are activated based on the precise nature of + * device the kernel boots up on. It is interesting to remember that each IP + * which belongs to a voltage domain may define their own set of OPPs on top + * of this - but this is handled by the appropriate driver. + */ +struct omap_opp_def { + char *hwmod_name; + + unsigned long freq; + unsigned long u_volt; + + bool default_available; +}; + +/* + * Initialization wrapper used to define an OPP for OMAP variants. + */ +#define OPP_INITIALIZER(_hwmod_name, _enabled, _freq, _uv) \ +{ \ + .hwmod_name = _hwmod_name, \ + .default_available = _enabled, \ + .freq = _freq, \ + .u_volt = _uv, \ +} + +/* Use this to initialize the default table */ +extern int __init omap_init_opp_table(struct omap_opp_def *opp_def, + u32 opp_def_size); + +#endif /* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */ diff --git a/arch/arm/mach-omap2/opp.c b/arch/arm/mach-omap2/opp.c new file mode 100644 index 000000000000..ab8b35b780b5 --- /dev/null +++ b/arch/arm/mach-omap2/opp.c @@ -0,0 +1,93 @@ +/* + * OMAP SoC specific OPP wrapper function + * + * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/ + * Nishanth Menon + * Kevin Hilman + * Copyright (C) 2010 Nokia Corporation. + * Eduardo Valentin + * + * 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. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/module.h> +#include <linux/opp.h> + +#include <plat/omap_device.h> + +#include "omap_opp_data.h" + +/* Temp variable to allow multiple calls */ +static u8 __initdata omap_table_init; + +/** + * omap_init_opp_table() - Initialize opp table as per the CPU type + * @opp_def: opp default list for this silicon + * @opp_def_size: number of opp entries for this silicon + * + * Register the initial OPP table with the OPP library based on the CPU + * type. This is meant to be used only by SoC specific registration. + */ +int __init omap_init_opp_table(struct omap_opp_def *opp_def, + u32 opp_def_size) +{ + int i, r; + + if (!opp_def || !opp_def_size) { + pr_err("%s: invalid params!\n", __func__); + return -EINVAL; + } + + /* + * Initialize only if not already initialized even if the previous + * call failed, because, no reason we'd succeed again. + */ + if (omap_table_init) + return -EEXIST; + omap_table_init = 1; + + /* Lets now register with OPP library */ + for (i = 0; i < opp_def_size; i++) { + struct omap_hwmod *oh; + struct device *dev; + + if (!opp_def->hwmod_name) { + pr_err("%s: NULL name of omap_hwmod, failing [%d].\n", + __func__, i); + return -EINVAL; + } + oh = omap_hwmod_lookup(opp_def->hwmod_name); + if (!oh || !oh->od) { + pr_warn("%s: no hwmod or odev for %s, [%d] " + "cannot add OPPs.\n", __func__, + opp_def->hwmod_name, i); + return -EINVAL; + } + dev = &oh->od->pdev.dev; + + r = opp_add(dev, opp_def->freq, opp_def->u_volt); + if (r) { + dev_err(dev, "%s: add OPP %ld failed for %s [%d] " + "result=%d\n", + __func__, opp_def->freq, + opp_def->hwmod_name, i, r); + } else { + if (!opp_def->default_available) + r = opp_disable(dev, opp_def->freq); + if (r) + dev_err(dev, "%s: disable %ld failed for %s " + "[%d] result=%d\n", + __func__, opp_def->freq, + opp_def->hwmod_name, i, r); + } + opp_def++; + } + + return 0; +} diff --git a/arch/arm/mach-omap2/opp3xxx_data.c b/arch/arm/mach-omap2/opp3xxx_data.c new file mode 100644 index 000000000000..0486fce8a92c --- /dev/null +++ b/arch/arm/mach-omap2/opp3xxx_data.c @@ -0,0 +1,107 @@ +/* + * OMAP3 OPP table definitions. + * + * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/ + * Nishanth Menon + * Kevin Hilman + * Copyright (C) 2010 Nokia Corporation. + * Eduardo Valentin + * + * 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. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/module.h> + +#include <plat/cpu.h> + +#include "omap_opp_data.h" + +static struct omap_opp_def __initdata omap34xx_opp_def_list[] = { + /* MPU OPP1 */ + OPP_INITIALIZER("mpu", true, 125000000, 975000), + /* MPU OPP2 */ + OPP_INITIALIZER("mpu", true, 250000000, 1075000), + /* MPU OPP3 */ + OPP_INITIALIZER("mpu", true, 500000000, 1200000), + /* MPU OPP4 */ + OPP_INITIALIZER("mpu", true, 550000000, 1270000), + /* MPU OPP5 */ + OPP_INITIALIZER("mpu", true, 600000000, 1350000), + + /* + * L3 OPP1 - 41.5 MHz is disabled because: The voltage for that OPP is + * almost the same than the one at 83MHz thus providing very little + * gain for the power point of view. In term of energy it will even + * increase the consumption due to the very negative performance + * impact that frequency will do to the MPU and the whole system in + * general. + */ + OPP_INITIALIZER("l3_main", false, 41500000, 975000), + /* L3 OPP2 */ + OPP_INITIALIZER("l3_main", true, 83000000, 1050000), + /* L3 OPP3 */ + OPP_INITIALIZER("l3_main", true, 166000000, 1150000), + + /* DSP OPP1 */ + OPP_INITIALIZER("iva", true, 90000000, 975000), + /* DSP OPP2 */ + OPP_INITIALIZER("iva", true, 180000000, 1075000), + /* DSP OPP3 */ + OPP_INITIALIZER("iva", true, 360000000, 1200000), + /* DSP OPP4 */ + OPP_INITIALIZER("iva", true, 400000000, 1270000), + /* DSP OPP5 */ + OPP_INITIALIZER("iva", true, 430000000, 1350000), +}; + +static struct omap_opp_def __initdata omap36xx_opp_def_list[] = { + /* MPU OPP1 - OPP50 */ + OPP_INITIALIZER("mpu", true, 300000000, 1012500), + /* MPU OPP2 - OPP100 */ + OPP_INITIALIZER("mpu", true, 600000000, 1200000), + /* MPU OPP3 - OPP-Turbo */ + OPP_INITIALIZER("mpu", false, 800000000, 1325000), + /* MPU OPP4 - OPP-SB */ + OPP_INITIALIZER("mpu", false, 1000000000, 1375000), + + /* L3 OPP1 - OPP50 */ + OPP_INITIALIZER("l3_main", true, 100000000, 1000000), + /* L3 OPP2 - OPP100, OPP-Turbo, OPP-SB */ + OPP_INITIALIZER("l3_main", true, 200000000, 1200000), + + /* DSP OPP1 - OPP50 */ + OPP_INITIALIZER("iva", true, 260000000, 1012500), + /* DSP OPP2 - OPP100 */ + OPP_INITIALIZER("iva", true, 520000000, 1200000), + /* DSP OPP3 - OPP-Turbo */ + OPP_INITIALIZER("iva", false, 660000000, 1325000), + /* DSP OPP4 - OPP-SB */ + OPP_INITIALIZER("iva", false, 800000000, 1375000), +}; + +/** + * omap3_opp_init() - initialize omap3 opp table + */ +static int __init omap3_opp_init(void) +{ + int r = -ENODEV; + + if (!cpu_is_omap34xx()) + return r; + + if (cpu_is_omap3630()) + r = omap_init_opp_table(omap36xx_opp_def_list, + ARRAY_SIZE(omap36xx_opp_def_list)); + else + r = omap_init_opp_table(omap34xx_opp_def_list, + ARRAY_SIZE(omap34xx_opp_def_list)); + + return r; +} +device_initcall(omap3_opp_init); diff --git a/arch/arm/mach-omap2/opp4xxx_data.c b/arch/arm/mach-omap2/opp4xxx_data.c new file mode 100644 index 000000000000..a11fa566d8ee --- /dev/null +++ b/arch/arm/mach-omap2/opp4xxx_data.c @@ -0,0 +1,57 @@ +/* + * OMAP4 OPP table definitions. + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * Nishanth Menon + * Kevin Hilman + * Thara Gopinath + * Copyright (C) 2010 Nokia Corporation. + * Eduardo Valentin + * + * 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. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/module.h> + +#include <plat/cpu.h> + +#include "omap_opp_data.h" + +static struct omap_opp_def __initdata omap44xx_opp_def_list[] = { + /* MPU OPP1 - OPP50 */ + OPP_INITIALIZER("mpu", true, 300000000, 1100000), + /* MPU OPP2 - OPP100 */ + OPP_INITIALIZER("mpu", true, 600000000, 1200000), + /* MPU OPP3 - OPP-Turbo */ + OPP_INITIALIZER("mpu", false, 800000000, 1260000), + /* MPU OPP4 - OPP-SB */ + OPP_INITIALIZER("mpu", false, 1008000000, 1350000), + /* L3 OPP1 - OPP50 */ + OPP_INITIALIZER("l3_main_1", true, 100000000, 930000), + /* L3 OPP2 - OPP100, OPP-Turbo, OPP-SB */ + OPP_INITIALIZER("l3_main_1", true, 200000000, 1100000), + /* TODO: add IVA, DSP, aess, fdif, gpu */ +}; + +/** + * omap4_opp_init() - initialize omap4 opp table + */ +static int __init omap4_opp_init(void) +{ + int r = -ENODEV; + + if (!cpu_is_omap44xx()) + return r; + + r = omap_init_opp_table(omap44xx_opp_def_list, + ARRAY_SIZE(omap44xx_opp_def_list)); + + return r; +} +device_initcall(omap4_opp_init); diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index c04f7b50e26f..8b4f45eba1b5 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -20,6 +20,20 @@ extern int omap3_can_sleep(void); extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state); extern int omap3_idle_init(void); +#if defined(CONFIG_PM_OPP) +extern int omap3_opp_init(void); +extern int omap4_opp_init(void); +#else +static inline int omap3_opp_init(void) +{ + return -EINVAL; +} +static inline int omap4_opp_init(void) +{ + return -EINVAL; +} +#endif + struct cpuidle_params { u8 valid; u32 sleep_latency; diff --git a/arch/arm/plat-omap/include/plat/omap-pm.h b/arch/arm/plat-omap/include/plat/omap-pm.h index 728fbb9dd549..62c3fe918ab2 100644 --- a/arch/arm/plat-omap/include/plat/omap-pm.h +++ b/arch/arm/plat-omap/include/plat/omap-pm.h @@ -17,27 +17,10 @@ #include <linux/device.h> #include <linux/cpufreq.h> #include <linux/clk.h> +#include <linux/opp.h> #include "powerdomain.h" -/** - * struct omap_opp - clock frequency-to-OPP ID table for DSP, MPU - * @rate: target clock rate - * @opp_id: OPP ID - * @min_vdd: minimum VDD1 voltage (in millivolts) for this OPP - * - * Operating performance point data. Can vary by OMAP chip and board. - */ -struct omap_opp { - unsigned long rate; - u8 opp_id; - u16 min_vdd; -}; - -extern struct omap_opp *mpu_opps; -extern struct omap_opp *dsp_opps; -extern struct omap_opp *l3_opps; - /* * agent_id values for use with omap_pm_set_min_bus_tput(): * @@ -59,9 +42,11 @@ extern struct omap_opp *l3_opps; * framework starts. The "_if_" is to avoid name collisions with the * PM idle-loop code. */ -int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table, - struct omap_opp *dsp_opp_table, - struct omap_opp *l3_opp_table); +#ifdef CONFIG_OMAP_PM_NONE +#define omap_pm_if_early_init() 0 +#else +int __init omap_pm_if_early_init(void); +#endif /** * omap_pm_if_init - OMAP PM init code called after clock fw init @@ -69,7 +54,11 @@ int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table, * The main initialization code. OPP tables are passed in here. The * "_if_" is to avoid name collisions with the PM idle-loop code. */ +#ifdef CONFIG_OMAP_PM_NONE +#define omap_pm_if_init() 0 +#else int __init omap_pm_if_init(void); +#endif /** * omap_pm_if_exit - OMAP PM exit code diff --git a/arch/arm/plat-omap/omap-pm-noop.c b/arch/arm/plat-omap/omap-pm-noop.c index e129ce80c53b..ca75abb18068 100644 --- a/arch/arm/plat-omap/omap-pm-noop.c +++ b/arch/arm/plat-omap/omap-pm-noop.c @@ -26,10 +26,6 @@ #include <plat/powerdomain.h> -struct omap_opp *dsp_opps; -struct omap_opp *mpu_opps; -struct omap_opp *l3_opps; - /* * Device-driver-originated constraints (via board-*.c files) */ @@ -308,13 +304,8 @@ int omap_pm_get_dev_context_loss_count(struct device *dev) /* Should be called before clk framework init */ -int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table, - struct omap_opp *dsp_opp_table, - struct omap_opp *l3_opp_table) +int __init omap_pm_if_early_init(void) { - mpu_opps = mpu_opp_table; - dsp_opps = dsp_opp_table; - l3_opps = l3_opp_table; return 0; } |
