Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver.
Signed-off-by: Thara Gopinath <[email protected]> --- arch/arm/mach-omap2/Makefile | 1 + arch/arm/mach-omap2/board-3430sdp.c | 2 + arch/arm/mach-omap2/board-3630sdp.c | 2 + arch/arm/mach-omap2/board-zoom3.c | 2 + arch/arm/mach-omap2/smartreflex-class3.c | 61 ++++++++++++++++++++++++++++++ arch/arm/mach-omap2/smartreflex-class3.h | 23 +++++++++++ arch/arm/plat-omap/Kconfig | 9 ++++ 7 files changed, 100 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap2/smartreflex-class3.c create mode 100644 arch/arm/mach-omap2/smartreflex-class3.h diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index f259bb8..8ead729 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o voltage.o \ obj-$(CONFIG_ARCH_OMAP4) += pm44xx.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 AFLAGS_sleep24xx.o :=-Wa,-march=armv6 AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c index 67b95b5f..9a04a2e 100644 --- a/arch/arm/mach-omap2/board-3430sdp.c +++ b/arch/arm/mach-omap2/board-3430sdp.c @@ -47,6 +47,7 @@ #include "sdram-qimonda-hyb18m512160af-6.h" #include "hsmmc.h" #include "pm.h" +#include "smartreflex-class3.h" #define CONFIG_DISABLE_HFCLK 1 @@ -813,6 +814,7 @@ static void __init omap_3430sdp_init(void) sdp3430_display_init(); enable_board_wakeup_source(); usb_ehci_init(&ehci_pdata); + sr_class3_init(); } MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board") diff --git a/arch/arm/mach-omap2/board-3630sdp.c b/arch/arm/mach-omap2/board-3630sdp.c index b359c3f..597b1a3 100644 --- a/arch/arm/mach-omap2/board-3630sdp.c +++ b/arch/arm/mach-omap2/board-3630sdp.c @@ -25,6 +25,7 @@ #include "mux.h" #include "sdram-hynix-h8mbx00u0mer-0em.h" +#include "smartreflex-class3.h" #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE) @@ -214,6 +215,7 @@ static void __init omap_sdp_init(void) board_flash_init(sdp_flash_partitions, chip_sel_sdp); enable_board_wakeup_source(); usb_ehci_init(&ehci_pdata); + sr_class3_init(); } MACHINE_START(OMAP_3630SDP, "OMAP 3630SDP board") diff --git a/arch/arm/mach-omap2/board-zoom3.c b/arch/arm/mach-omap2/board-zoom3.c index 6ca0b83..03411b2 100644 --- a/arch/arm/mach-omap2/board-zoom3.c +++ b/arch/arm/mach-omap2/board-zoom3.c @@ -24,6 +24,7 @@ #include "mux.h" #include "sdram-hynix-h8mbx00u0mer-0em.h" +#include "smartreflex-class3.h" static struct omap_board_config_kernel zoom_config[] __initdata = { }; @@ -120,6 +121,7 @@ static void __init omap_zoom_init(void) omap_mux_init_gpio(64, OMAP_PIN_OUTPUT); usb_ehci_init(&ehci_pdata); + sr_class3_init(); } MACHINE_START(OMAP_ZOOM3, "OMAP Zoom3 board") diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c new file mode 100644 index 0000000..162d36d --- /dev/null +++ b/arch/arm/mach-omap2/smartreflex-class3.c @@ -0,0 +1,61 @@ +/* + * Smart reflex Class 3 specific implementations + * + * Author: Thara Gopinath <[email protected]> + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Thara Gopinath <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <plat/smartreflex.h> + +#include "smartreflex-class3.h" + +static int sr_class3_enable(struct voltagedomain *voltdm) +{ + unsigned long volt = 0; + + volt = omap_voltage_get_nom_volt(voltdm); + if (!volt) { + pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n", + __func__, voltdm->name); + return -ENODATA; + } + + omap_vp_enable(voltdm); + return sr_enable(voltdm, volt); +} + +static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset) +{ + omap_vp_disable(voltdm); + sr_disable(voltdm); + if (is_volt_reset) + omap_voltage_reset(voltdm); + + return 0; +} + +static int sr_class3_configure(struct voltagedomain *voltdm) +{ + return sr_configure_errgen(voltdm); +} + +/* SR class3 structure */ +static struct omap_smartreflex_class_data class3_data = { + .enable = sr_class3_enable, + .disable = sr_class3_disable, + .configure = sr_class3_configure, + .class_type = SR_CLASS3, +}; + +/* Smartreflex CLASS3 init API to be called from board file */ +int __init sr_class3_init(void) +{ + pr_info("SmartReflex CLASS3 initialized\n"); + return omap_sr_register_class(&class3_data); +} diff --git a/arch/arm/mach-omap2/smartreflex-class3.h b/arch/arm/mach-omap2/smartreflex-class3.h new file mode 100644 index 0000000..4d86037 --- /dev/null +++ b/arch/arm/mach-omap2/smartreflex-class3.h @@ -0,0 +1,23 @@ +/* + * Smartreflex Class 3 Routines + * + * Author: Thara Gopinath <[email protected]> + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Thara Gopinath <[email protected]> + * + * 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. + */ + +#ifndef __ARCH_ARM_MACH_OMAP2_SMARTREFLEXCLASS3_H +#define __ARCH_ARM_MACH_OMAP2_SMARTREFLEXCLASS3_H + +#ifdef CONFIG_OMAP_SMARTREFLEX_CLASS3 +int sr_class3_init(void); +#else +static int sr_class3_init(void) { return 0; } +#endif + +#endif diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index 8056349..af7acc9 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -67,6 +67,15 @@ config OMAP_SMARTREFLEX_TESTING WARNING: Enabling this option may cause your device to hang! +config OMAP_SMARTREFLEX_CLASS3 + bool "Class 3 mode of Smartreflex Implementation" + depends on OMAP_SMARTREFLEX && TWL4030_CORE + help + Say Y to enable Class 3 implementation of Smartreflex + + Class 3 implementation of Smartreflex employs continuous hardware + voltage caliberation. + config OMAP_RESET_CLOCKS bool "Reset unused clocks during boot" depends on ARCH_OMAP -- 1.7.1.GIT -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
