[PATCH 5/8] ARM: plat-nomadik: move MTU, kill plat-nomadik
From: Linus Walleij <hidden>
Date: 2012-10-18 17:19:08
Subsystem:
arm port, arm/nomadik/ux500 architectures, clocksource, clockevent drivers, hardware random number generator core, input (keyboard, mouse, joystick, touchscreen) drivers, memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Russell King, Linus Walleij, Daniel Lezcano, Thomas Gleixner, Olivia Mackall, Herbert Xu, Dmitry Torokhov, Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
From: Linus Walleij <redacted> This moves the MTU timer driver from arch/arm/plat-nomadik to drivers/clocksource and moves the header file to the platform_data directory. As this moves the last file being compiled to an object out of arch/arm/plat-nomadik, we have to "turn off the light" and delete the plat-nomadik directory, because it is not allowed to have an empty Makefile in a plat-* directory. This is probably also a desired side effect of depopulating the arch/arm directory of drivers. Luckily we have just deleted all the <plat/*> include files prior to this so by moving the last one we may delete the directory. After this all the Ux500 and Nomadik device drivers live outside of the arch/arm hierarchy. Cc: Alessandro Rubini <redacted> Signed-off-by: Linus Walleij <redacted> --- arch/arm/Kconfig | 1 - arch/arm/Makefile | 1 - arch/arm/mach-nomadik/Kconfig | 2 +- arch/arm/mach-nomadik/board-nhk8815.c | 6 +- arch/arm/mach-ux500/Kconfig | 2 +- arch/arm/mach-ux500/timer.c | 3 +- arch/arm/plat-nomadik/Kconfig | 29 --- arch/arm/plat-nomadik/Makefile | 5 - arch/arm/plat-nomadik/include/plat/mtu.h | 9 - arch/arm/plat-nomadik/timer.c | 224 --------------------- drivers/char/hw_random/Kconfig | 2 +- drivers/clocksource/Kconfig | 17 +- drivers/clocksource/Makefile | 1 + drivers/clocksource/nomadik-mtu.c | 224 +++++++++++++++++++++ drivers/input/keyboard/Kconfig | 2 +- drivers/mtd/nand/Kconfig | 2 +- .../linux/platform_data/clocksource-nomadik-mtu.h | 9 + 17 files changed, 258 insertions(+), 281 deletions(-) delete mode 100644 arch/arm/plat-nomadik/Kconfig delete mode 100644 arch/arm/plat-nomadik/Makefile delete mode 100644 arch/arm/plat-nomadik/include/plat/mtu.h delete mode 100644 arch/arm/plat-nomadik/timer.c create mode 100644 drivers/clocksource/nomadik-mtu.c create mode 100644 include/linux/platform_data/clocksource-nomadik-mtu.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067ef..c5f2c18 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig@@ -1065,7 +1065,6 @@ source "arch/arm/mach-mxs/Kconfig" source "arch/arm/mach-netx/Kconfig" source "arch/arm/mach-nomadik/Kconfig" -source "arch/arm/plat-nomadik/Kconfig" source "arch/arm/plat-omap/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f023e3a..ed6a304 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile@@ -200,7 +200,6 @@ plat-$(CONFIG_ARCH_OMAP) += omap plat-$(CONFIG_ARCH_S3C64XX) += samsung plat-$(CONFIG_ARCH_ZYNQ) += versatile plat-$(CONFIG_PLAT_IOP) += iop -plat-$(CONFIG_PLAT_NOMADIK) += nomadik plat-$(CONFIG_PLAT_ORION) += orion plat-$(CONFIG_PLAT_PXA) += pxa plat-$(CONFIG_PLAT_S3C24XX) += s3c24xx samsung
diff --git a/arch/arm/mach-nomadik/Kconfig b/arch/arm/mach-nomadik/Kconfig
index c744946..706dc57 100644
--- a/arch/arm/mach-nomadik/Kconfig
+++ b/arch/arm/mach-nomadik/Kconfig@@ -4,7 +4,7 @@ menu "Nomadik boards" config MACH_NOMADIK_8815NHK bool "ST 8815 Nomadik Hardware Kit (evaluation board)" - select HAS_MTU + select CLKSRC_NOMADIK_MTU select NOMADIK_8815 endmenu
diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
index 16f10e0..5ccdf53 100644
--- a/arch/arm/mach-nomadik/board-nhk8815.c
+++ b/arch/arm/mach-nomadik/board-nhk8815.c@@ -25,16 +25,14 @@ #include <linux/io.h> #include <linux/pinctrl/machine.h> #include <linux/platform_data/pinctrl-nomadik.h> +#include <linux/platform_data/clocksource-nomadik-mtu.h> +#include <linux/platform_data/mtd-nomadik-nand.h> #include <asm/hardware/vic.h> #include <asm/sizes.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/flash.h> #include <asm/mach/time.h> - -#include <plat/mtu.h> - -#include <linux/platform_data/mtd-nomadik-nand.h> #include <mach/fsmc.h> #include <mach/irqs.h>
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index e8c3f0d..5dea906 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig@@ -7,8 +7,8 @@ config UX500_SOC_COMMON select ARM_ERRATA_764369 if SMP select ARM_GIC select CACHE_L2X0 + select CLKSRC_NOMADIK_MTU select COMMON_CLK - select HAS_MTU select PINCTRL select PINCTRL_NOMADIK select PL310_ERRATA_753970 if CACHE_PL310
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index 20d02fa..875309a 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c@@ -9,11 +9,10 @@ #include <linux/clksrc-dbx500-prcmu.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/platform_data/clocksource-nomadik-mtu.h> #include <asm/smp_twd.h> -#include <plat/mtu.h> - #include <mach/setup.h> #include <mach/hardware.h> #include <mach/irqs.h>
diff --git a/arch/arm/plat-nomadik/Kconfig b/arch/arm/plat-nomadik/Kconfig
deleted file mode 100644
index 19f55ca..0000000
--- a/arch/arm/plat-nomadik/Kconfig
+++ /dev/null@@ -1,29 +0,0 @@ -# We keep common IP's here for Nomadik and other similar -# familiy of processors from ST-Ericsson. At the moment we have -# just MTU, others to follow soon. - -config PLAT_NOMADIK - bool - depends on ARCH_NOMADIK || ARCH_U8500 - default y - select CLKSRC_MMIO - help - Common platform code for Nomadik and other ST-Ericsson - platforms. - -if PLAT_NOMADIK - -config HAS_MTU - bool - help - Support for Multi Timer Unit. MTU provides access - to multiple interrupt generating programmable - 32-bit free running decrementing counters. - -config NOMADIK_MTU_SCHED_CLOCK - bool - depends on HAS_MTU - help - Use the Multi Timer Unit as the sched_clock. - -endif
diff --git a/arch/arm/plat-nomadik/Makefile b/arch/arm/plat-nomadik/Makefile
deleted file mode 100644
index 37c7cdd..0000000
--- a/arch/arm/plat-nomadik/Makefile
+++ /dev/null@@ -1,5 +0,0 @@ -# arch/arm/plat-nomadik/Makefile -# Copyright 2009 ST-Ericsson -# Licensed under GPLv2 - -obj-$(CONFIG_HAS_MTU) += timer.o
diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h
deleted file mode 100644
index 8008897..0000000
--- a/arch/arm/plat-nomadik/include/plat/mtu.h
+++ /dev/null@@ -1,9 +0,0 @@ -#ifndef __PLAT_MTU_H -#define __PLAT_MTU_H - -void nmdk_timer_init(void __iomem *base, int irq); -void nmdk_clkevt_reset(void); -void nmdk_clksrc_reset(void); - -#endif /* __PLAT_MTU_H */ -
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
deleted file mode 100644
index f911430..0000000
--- a/arch/arm/plat-nomadik/timer.c
+++ /dev/null@@ -1,224 +0,0 @@ -/* - * linux/arch/arm/plat-nomadik/timer.c - * - * Copyright (C) 2008 STMicroelectronics - * Copyright (C) 2010 Alessandro Rubini - * Copyright (C) 2010 Linus Walleij for ST-Ericsson - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2, as - * published by the Free Software Foundation. - */ -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/io.h> -#include <linux/clockchips.h> -#include <linux/clk.h> -#include <linux/jiffies.h> -#include <linux/err.h> -#include <asm/mach/time.h> -#include <asm/sched_clock.h> - -/* - * The MTU device hosts four different counters, with 4 set of - * registers. These are register names. - */ - -#define MTU_IMSC 0x00 /* Interrupt mask set/clear */ -#define MTU_RIS 0x04 /* Raw interrupt status */ -#define MTU_MIS 0x08 /* Masked interrupt status */ -#define MTU_ICR 0x0C /* Interrupt clear register */ - -/* per-timer registers take 0..3 as argument */ -#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */ -#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */ -#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */ -#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */ - -/* bits for the control register */ -#define MTU_CRn_ENA 0x80 -#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */ -#define MTU_CRn_PRESCALE_MASK 0x0c -#define MTU_CRn_PRESCALE_1 0x00 -#define MTU_CRn_PRESCALE_16 0x04 -#define MTU_CRn_PRESCALE_256 0x08 -#define MTU_CRn_32BITS 0x02 -#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/ - -/* Other registers are usual amba/primecell registers, currently not used */ -#define MTU_ITCR 0xff0 -#define MTU_ITOP 0xff4 - -#define MTU_PERIPH_ID0 0xfe0 -#define MTU_PERIPH_ID1 0xfe4 -#define MTU_PERIPH_ID2 0xfe8 -#define MTU_PERIPH_ID3 0xfeC - -#define MTU_PCELL0 0xff0 -#define MTU_PCELL1 0xff4 -#define MTU_PCELL2 0xff8 -#define MTU_PCELL3 0xffC - -static void __iomem *mtu_base; -static bool clkevt_periodic; -static u32 clk_prescale; -static u32 nmdk_cycle; /* write-once */ - -#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK -/* - * Override the global weak sched_clock symbol with this - * local implementation which uses the clocksource to get some - * better resolution when scheduling the kernel. - */ -static u32 notrace nomadik_read_sched_clock(void) -{ - if (unlikely(!mtu_base)) - return 0; - - return -readl(mtu_base + MTU_VAL(0)); -} -#endif - -/* Clockevent device: use one-shot mode */ -static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) -{ - writel(1 << 1, mtu_base + MTU_IMSC); - writel(evt, mtu_base + MTU_LR(1)); - /* Load highest value, enable device, enable interrupts */ - writel(MTU_CRn_ONESHOT | clk_prescale | - MTU_CRn_32BITS | MTU_CRn_ENA, - mtu_base + MTU_CR(1)); - - return 0; -} - -void nmdk_clkevt_reset(void) -{ - if (clkevt_periodic) { - /* Timer: configure load and background-load, and fire it up */ - writel(nmdk_cycle, mtu_base + MTU_LR(1)); - writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); - - writel(MTU_CRn_PERIODIC | clk_prescale | - MTU_CRn_32BITS | MTU_CRn_ENA, - mtu_base + MTU_CR(1)); - writel(1 << 1, mtu_base + MTU_IMSC); - } else { - /* Generate an interrupt to start the clockevent again */ - (void) nmdk_clkevt_next(nmdk_cycle, NULL); - } -} - -static void nmdk_clkevt_mode(enum clock_event_mode mode, - struct clock_event_device *dev) -{ - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - clkevt_periodic = true; - nmdk_clkevt_reset(); - break; - case CLOCK_EVT_MODE_ONESHOT: - clkevt_periodic = false; - break; - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_UNUSED: - writel(0, mtu_base + MTU_IMSC); - /* disable timer */ - writel(0, mtu_base + MTU_CR(1)); - /* load some high default value */ - writel(0xffffffff, mtu_base + MTU_LR(1)); - break; - case CLOCK_EVT_MODE_RESUME: - break; - } -} - -static struct clock_event_device nmdk_clkevt = { - .name = "mtu_1", - .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC, - .rating = 200, - .set_mode = nmdk_clkevt_mode, - .set_next_event = nmdk_clkevt_next, -}; - -/* - * IRQ Handler for timer 1 of the MTU block. - */ -static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evdev = dev_id; - - writel(1 << 1, mtu_base + MTU_ICR); /* Interrupt clear reg */ - evdev->event_handler(evdev); - return IRQ_HANDLED; -} - -static struct irqaction nmdk_timer_irq = { - .name = "Nomadik Timer Tick", - .flags = IRQF_DISABLED | IRQF_TIMER, - .handler = nmdk_timer_interrupt, - .dev_id = &nmdk_clkevt, -}; - -void nmdk_clksrc_reset(void) -{ - /* Disable */ - writel(0, mtu_base + MTU_CR(0)); - - /* ClockSource: configure load and background-load, and fire it up */ - writel(nmdk_cycle, mtu_base + MTU_LR(0)); - writel(nmdk_cycle, mtu_base + MTU_BGLR(0)); - - writel(clk_prescale | MTU_CRn_32BITS | MTU_CRn_ENA, - mtu_base + MTU_CR(0)); -} - -void __init nmdk_timer_init(void __iomem *base, int irq) -{ - unsigned long rate; - struct clk *clk0; - - mtu_base = base; - clk0 = clk_get_sys("mtu0", NULL); - BUG_ON(IS_ERR(clk0)); - BUG_ON(clk_prepare(clk0) < 0); - BUG_ON(clk_enable(clk0) < 0); - - /* - * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz - * for ux500. - * Use a divide-by-16 counter if the tick rate is more than 32MHz. - * At 32 MHz, the timer (with 32 bit counter) can be programmed - * to wake-up@a max 127s a head in time. Dividing a 2.4 MHz timer - * with 16 gives too low timer resolution. - */ - rate = clk_get_rate(clk0); - if (rate > 32000000) { - rate /= 16; - clk_prescale = MTU_CRn_PRESCALE_16; - } else { - clk_prescale = MTU_CRn_PRESCALE_1; - } - - /* Cycles for periodic mode */ - nmdk_cycle = DIV_ROUND_CLOSEST(rate, HZ); - - - /* Timer 0 is the free running clocksource */ - nmdk_clksrc_reset(); - - if (clocksource_mmio_init(mtu_base + MTU_VAL(0), "mtu_0", - rate, 200, 32, clocksource_mmio_readl_down)) - pr_err("timer: failed to initialize clock source %s\n", - "mtu_0"); - -#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK - setup_sched_clock(nomadik_read_sched_clock, 32, rate); -#endif - - /* Timer 1 is used for events, register irq and clockevents */ - setup_irq(irq, &nmdk_timer_irq); - nmdk_clkevt.cpumask = cpumask_of(0); - clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); -}
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index fbd9b2b..5bc09ee 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig@@ -216,7 +216,7 @@ config HW_RANDOM_MXC_RNGA config HW_RANDOM_NOMADIK tristate "ST-Ericsson Nomadik Random Number Generator support" - depends on HW_RANDOM && PLAT_NOMADIK + depends on HW_RANDOM && ARCH_NOMADIK ---help--- This driver provides kernel-side support for the Random Number Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 6a78073..c9f67de 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig@@ -22,6 +22,21 @@ config DW_APB_TIMER_OF config ARMADA_370_XP_TIMER bool +config CLKSRC_NOMADIK_MTU + bool + depends on (ARCH_NOMADIK || ARCH_U8500) + select CLKSRC_MMIO + help + Support for Multi Timer Unit. MTU provides access + to multiple interrupt generating programmable + 32-bit free running decrementing counters. + +config CLKSRC_NOMADIK_MTU_SCHED_CLOCK + bool + depends on CLKSRC_NOMADIK_MTU + help + Use the Multi Timer Unit as the sched_clock. + config CLKSRC_DBX500_PRCMU bool "Clocksource PRCMU Timer" depends on UX500_SOC_DB8500
@@ -31,7 +46,7 @@ config CLKSRC_DBX500_PRCMU config CLKSRC_DBX500_PRCMU_SCHED_CLOCK bool "Clocksource PRCMU Timer sched_clock" - depends on (CLKSRC_DBX500_PRCMU && !NOMADIK_MTU_SCHED_CLOCK) + depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK) default y help Use the always on PRCMU Timer as sched_clock
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 603be36..24fb888 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile@@ -11,6 +11,7 @@ obj-$(CONFIG_CLKBLD_I8253) += i8253.o obj-$(CONFIG_CLKSRC_MMIO) += mmio.o obj-$(CONFIG_DW_APB_TIMER) += dw_apb_timer.o obj-$(CONFIG_DW_APB_TIMER_OF) += dw_apb_timer_of.o +obj-$(CONFIG_CLKSRC_NOMADIK_MTU) += nomadik-mtu.o obj-$(CONFIG_CLKSRC_DBX500_PRCMU) += clksrc-dbx500-prcmu.o obj-$(CONFIG_ARMADA_370_XP_TIMER) += time-armada-370-xp.o obj-$(CONFIG_ARCH_BCM2835) += bcm2835_timer.o
diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
new file mode 100644
index 0000000..23c780b
--- /dev/null
+++ b/drivers/clocksource/nomadik-mtu.c@@ -0,0 +1,224 @@ +/* + * Copyright (C) 2008 STMicroelectronics + * Copyright (C) 2010 Alessandro Rubini + * Copyright (C) 2010 Linus Walleij for ST-Ericsson + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/clockchips.h> +#include <linux/clocksource.h> +#include <linux/clk.h> +#include <linux/jiffies.h> +#include <linux/err.h> +#include <linux/platform_data/clocksource-nomadik-mtu.h> +#include <asm/mach/time.h> +#include <asm/sched_clock.h> + +/* + * The MTU device hosts four different counters, with 4 set of + * registers. These are register names. + */ + +#define MTU_IMSC 0x00 /* Interrupt mask set/clear */ +#define MTU_RIS 0x04 /* Raw interrupt status */ +#define MTU_MIS 0x08 /* Masked interrupt status */ +#define MTU_ICR 0x0C /* Interrupt clear register */ + +/* per-timer registers take 0..3 as argument */ +#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */ +#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */ +#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */ +#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */ + +/* bits for the control register */ +#define MTU_CRn_ENA 0x80 +#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */ +#define MTU_CRn_PRESCALE_MASK 0x0c +#define MTU_CRn_PRESCALE_1 0x00 +#define MTU_CRn_PRESCALE_16 0x04 +#define MTU_CRn_PRESCALE_256 0x08 +#define MTU_CRn_32BITS 0x02 +#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/ + +/* Other registers are usual amba/primecell registers, currently not used */ +#define MTU_ITCR 0xff0 +#define MTU_ITOP 0xff4 + +#define MTU_PERIPH_ID0 0xfe0 +#define MTU_PERIPH_ID1 0xfe4 +#define MTU_PERIPH_ID2 0xfe8 +#define MTU_PERIPH_ID3 0xfeC + +#define MTU_PCELL0 0xff0 +#define MTU_PCELL1 0xff4 +#define MTU_PCELL2 0xff8 +#define MTU_PCELL3 0xffC + +static void __iomem *mtu_base; +static bool clkevt_periodic; +static u32 clk_prescale; +static u32 nmdk_cycle; /* write-once */ + +#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK +/* + * Override the global weak sched_clock symbol with this + * local implementation which uses the clocksource to get some + * better resolution when scheduling the kernel. + */ +static u32 notrace nomadik_read_sched_clock(void) +{ + if (unlikely(!mtu_base)) + return 0; + + return -readl(mtu_base + MTU_VAL(0)); +} +#endif + +/* Clockevent device: use one-shot mode */ +static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) +{ + writel(1 << 1, mtu_base + MTU_IMSC); + writel(evt, mtu_base + MTU_LR(1)); + /* Load highest value, enable device, enable interrupts */ + writel(MTU_CRn_ONESHOT | clk_prescale | + MTU_CRn_32BITS | MTU_CRn_ENA, + mtu_base + MTU_CR(1)); + + return 0; +} + +void nmdk_clkevt_reset(void) +{ + if (clkevt_periodic) { + /* Timer: configure load and background-load, and fire it up */ + writel(nmdk_cycle, mtu_base + MTU_LR(1)); + writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); + + writel(MTU_CRn_PERIODIC | clk_prescale | + MTU_CRn_32BITS | MTU_CRn_ENA, + mtu_base + MTU_CR(1)); + writel(1 << 1, mtu_base + MTU_IMSC); + } else { + /* Generate an interrupt to start the clockevent again */ + (void) nmdk_clkevt_next(nmdk_cycle, NULL); + } +} + +static void nmdk_clkevt_mode(enum clock_event_mode mode, + struct clock_event_device *dev) +{ + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + clkevt_periodic = true; + nmdk_clkevt_reset(); + break; + case CLOCK_EVT_MODE_ONESHOT: + clkevt_periodic = false; + break; + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + writel(0, mtu_base + MTU_IMSC); + /* disable timer */ + writel(0, mtu_base + MTU_CR(1)); + /* load some high default value */ + writel(0xffffffff, mtu_base + MTU_LR(1)); + break; + case CLOCK_EVT_MODE_RESUME: + break; + } +} + +static struct clock_event_device nmdk_clkevt = { + .name = "mtu_1", + .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC, + .rating = 200, + .set_mode = nmdk_clkevt_mode, + .set_next_event = nmdk_clkevt_next, +}; + +/* + * IRQ Handler for timer 1 of the MTU block. + */ +static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evdev = dev_id; + + writel(1 << 1, mtu_base + MTU_ICR); /* Interrupt clear reg */ + evdev->event_handler(evdev); + return IRQ_HANDLED; +} + +static struct irqaction nmdk_timer_irq = { + .name = "Nomadik Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = nmdk_timer_interrupt, + .dev_id = &nmdk_clkevt, +}; + +void nmdk_clksrc_reset(void) +{ + /* Disable */ + writel(0, mtu_base + MTU_CR(0)); + + /* ClockSource: configure load and background-load, and fire it up */ + writel(nmdk_cycle, mtu_base + MTU_LR(0)); + writel(nmdk_cycle, mtu_base + MTU_BGLR(0)); + + writel(clk_prescale | MTU_CRn_32BITS | MTU_CRn_ENA, + mtu_base + MTU_CR(0)); +} + +void __init nmdk_timer_init(void __iomem *base, int irq) +{ + unsigned long rate; + struct clk *clk0; + + mtu_base = base; + clk0 = clk_get_sys("mtu0", NULL); + BUG_ON(IS_ERR(clk0)); + BUG_ON(clk_prepare(clk0) < 0); + BUG_ON(clk_enable(clk0) < 0); + + /* + * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz + * for ux500. + * Use a divide-by-16 counter if the tick rate is more than 32MHz. + * At 32 MHz, the timer (with 32 bit counter) can be programmed + * to wake-up@a max 127s a head in time. Dividing a 2.4 MHz timer + * with 16 gives too low timer resolution. + */ + rate = clk_get_rate(clk0); + if (rate > 32000000) { + rate /= 16; + clk_prescale = MTU_CRn_PRESCALE_16; + } else { + clk_prescale = MTU_CRn_PRESCALE_1; + } + + /* Cycles for periodic mode */ + nmdk_cycle = DIV_ROUND_CLOSEST(rate, HZ); + + + /* Timer 0 is the free running clocksource */ + nmdk_clksrc_reset(); + + if (clocksource_mmio_init(mtu_base + MTU_VAL(0), "mtu_0", + rate, 200, 32, clocksource_mmio_readl_down)) + pr_err("timer: failed to initialize clock source %s\n", + "mtu_0"); + +#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK + setup_sched_clock(nomadik_read_sched_clock, 32, rate); +#endif + + /* Timer 1 is used for events, register irq and clockevents */ + setup_irq(irq, &nmdk_timer_irq); + nmdk_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); +}
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index b4b65af..855fc52 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig@@ -408,7 +408,7 @@ config KEYBOARD_NEWTON config KEYBOARD_NOMADIK tristate "ST-Ericsson Nomadik SKE keyboard" - depends on PLAT_NOMADIK + depends on (ARCH_NOMADIK || ARCH_U8500) select INPUT_MATRIXKMAP help Say Y here if you want to use a keypad provided on the SKE controller
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 4883139..e4f5748 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig@@ -559,7 +559,7 @@ config MTD_NAND_JZ4740 config MTD_NAND_FSMC tristate "Support for NAND on ST Micros FSMC" - depends on PLAT_SPEAR || PLAT_NOMADIK || MACH_U300 + depends on PLAT_SPEAR || ARCH_NOMADIK || ARCH_U8500 || MACH_U300 help Enables support for NAND Flash chips on the ST Microelectronics Flexible Static Memory Controller (FSMC)
diff --git a/include/linux/platform_data/clocksource-nomadik-mtu.h b/include/linux/platform_data/clocksource-nomadik-mtu.h
new file mode 100644
index 0000000..8008897
--- /dev/null
+++ b/include/linux/platform_data/clocksource-nomadik-mtu.h@@ -0,0 +1,9 @@ +#ifndef __PLAT_MTU_H +#define __PLAT_MTU_H + +void nmdk_timer_init(void __iomem *base, int irq); +void nmdk_clkevt_reset(void); +void nmdk_clksrc_reset(void); + +#endif /* __PLAT_MTU_H */ +
--
1.7.11.3