diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 09:03:55 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 09:03:55 -0700 |
commit | a7726350e06401929eac0aa0677a5467106565fc (patch) | |
tree | e189513e5014bdfccd73a3af731a6b57733743fa /drivers | |
parent | 4d26aa305414dbb33b3c32fb205b68004cda8ffc (diff) | |
parent | afcf7924ecab726dab0227188783c4a40d9f0eec (diff) |
Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanup from Olof Johansson:
"Here is a collection of cleanup patches. Among the pieces that stand
out are:
- The deletion of h720x platforms
- Split of at91 non-dt platforms to their own Kconfig file to keep
them separate
- General cleanups and refactoring of i.MX and MXS platforms
- Some restructuring of clock tables for OMAP
- Convertion of PMC driver for Tegra to dt-only
- Some renames of sunxi -> sun4i (Allwinner A10)
- ... plus a bunch of other stuff that I haven't mentioned"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (119 commits)
ARM: i.MX: remove unused ARCH_* configs
ARM i.MX53: remove platform ahci support
ARM: sunxi: Rework the restart code
irqchip: sunxi: Rename sunxi to sun4i
irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro
clocksource: sunxi: Rename sunxi to sun4i
clocksource: sunxi: make use of CLKSRC_OF
clocksource: sunxi: Cleanup the timer code
ARM: at91: remove trailing semicolon from macros
ARM: at91/setup: fix trivial typos
ARM: EXYNOS: remove "config EXYNOS_DEV_DRM"
ARM: EXYNOS: change the name of USB ohci header
ARM: SAMSUNG: Remove unnecessary code for dma
ARM: S3C24XX: Remove unused GPIO drive strength register definitions
ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force wakeup method
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2412
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2410
ARM: S3C24XX: Removed unneeded dependency on ARCH_S3C24XX for boards
ARM: SAMSUNG: Fix typo "CONFIG_SAMSUNG_DEV_RTC"
ARM: S5P64X0: Fix typo "CONFIG_S5P64X0_SETUP_SDHCI"
...
Diffstat (limited to 'drivers')
35 files changed, 973 insertions, 431 deletions
diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c index b5c06f9766f6..f6a74872f14e 100644 --- a/drivers/clk/mxs/clk-imx23.c +++ b/drivers/clk/mxs/clk-imx23.c @@ -15,12 +15,15 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/of.h> -#include <mach/common.h> -#include <mach/mx23.h> +#include <linux/of_address.h> #include "clk.h" -#define DIGCTRL MX23_IO_ADDRESS(MX23_DIGCTL_BASE_ADDR) -#define CLKCTRL MX23_IO_ADDRESS(MX23_CLKCTRL_BASE_ADDR) +static void __iomem *clkctrl; +static void __iomem *digctrl; + +#define CLKCTRL clkctrl +#define DIGCTRL digctrl + #define PLLCTRL0 (CLKCTRL + 0x0000) #define CPU (CLKCTRL + 0x0020) #define HBUS (CLKCTRL + 0x0030) @@ -48,10 +51,10 @@ static void __init clk_misc_init(void) u32 val; /* Gate off cpu clock in WFI for power saving */ - __mxs_setl(1 << BP_CPU_INTERRUPT_WAIT, CPU); + writel_relaxed(1 << BP_CPU_INTERRUPT_WAIT, CPU + SET); /* Clear BYPASS for SAIF */ - __mxs_clrl(1 << BP_CLKSEQ_BYPASS_SAIF, CLKSEQ); + writel_relaxed(1 << BP_CLKSEQ_BYPASS_SAIF, CLKSEQ + CLR); /* SAIF has to use frac div for functional operation */ val = readl_relaxed(SAIF); @@ -62,14 +65,14 @@ static void __init clk_misc_init(void) * Source ssp clock from ref_io than ref_xtal, * as ref_xtal only provides 24 MHz as maximum. */ - __mxs_clrl(1 << BP_CLKSEQ_BYPASS_SSP, CLKSEQ); + writel_relaxed(1 << BP_CLKSEQ_BYPASS_SSP, CLKSEQ + CLR); /* * 480 MHz seems too high to be ssp clock source directly, * so set frac to get a 288 MHz ref_io. */ - __mxs_clrl(0x3f << BP_FRAC_IOFRAC, FRAC); - __mxs_setl(30 << BP_FRAC_IOFRAC, FRAC); + writel_relaxed(0x3f << BP_FRAC_IOFRAC, FRAC + CLR); + writel_relaxed(30 << BP_FRAC_IOFRAC, FRAC + SET); } static const char *sel_pll[] __initconst = { "pll", "ref_xtal", }; @@ -101,6 +104,14 @@ int __init mx23_clocks_init(void) struct device_node *np; u32 i; + np = of_find_compatible_node(NULL, NULL, "fsl,imx23-digctl"); + digctrl = of_iomap(np, 0); + WARN_ON(!digctrl); + + np = of_find_compatible_node(NULL, NULL, "fsl,imx23-clkctrl"); + clkctrl = of_iomap(np, 0); + WARN_ON(!clkctrl); + clk_misc_init(); clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000); @@ -153,19 +164,12 @@ int __init mx23_clocks_init(void) return PTR_ERR(clks[i]); } - np = of_find_compatible_node(NULL, NULL, "fsl,imx23-clkctrl"); - if (np) { - clk_data.clks = clks; - clk_data.clk_num = ARRAY_SIZE(clks); - of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); - } - - clk_register_clkdev(clks[clk32k], NULL, "timrot"); + clk_data.clks = clks; + clk_data.clk_num = ARRAY_SIZE(clks); + of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(); - return 0; } diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c index 76ce6c6d1113..d0e5eed146de 100644 --- a/drivers/clk/mxs/clk-imx28.c +++ b/drivers/clk/mxs/clk-imx28.c @@ -15,11 +15,12 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/of.h> -#include <mach/common.h> -#include <mach/mx28.h> +#include <linux/of_address.h> #include "clk.h" -#define CLKCTRL MX28_IO_ADDRESS(MX28_CLKCTRL_BASE_ADDR) +static void __iomem *clkctrl; +#define CLKCTRL clkctrl + #define PLL0CTRL0 (CLKCTRL + 0x0000) #define PLL1CTRL0 (CLKCTRL + 0x0020) #define PLL2CTRL0 (CLKCTRL + 0x0040) @@ -53,7 +54,8 @@ #define BP_FRAC0_IO1FRAC 16 #define BP_FRAC0_IO0FRAC 24 -#define DIGCTRL MX28_IO_ADDRESS(MX28_DIGCTL_BASE_ADDR) +static void __iomem *digctrl; +#define DIGCTRL digctrl #define BP_SAIF_CLKMUX 10 /* @@ -72,8 +74,8 @@ int mxs_saif_clkmux_select(unsigned int clkmux) if (clkmux > 0x3) return -EINVAL; - __mxs_clrl(0x3 << BP_SAIF_CLKMUX, DIGCTRL); - __mxs_setl(clkmux << BP_SAIF_CLKMUX, DIGCTRL); + writel_relaxed(0x3 << BP_SAIF_CLKMUX, DIGCTRL + CLR); + writel_relaxed(clkmux << BP_SAIF_CLKMUX, DIGCTRL + SET); return 0; } @@ -83,13 +85,13 @@ static void __init clk_misc_init(void) u32 val; /* Gate off cpu clock in WFI for power saving */ - __mxs_setl(1 << BP_CPU_INTERRUPT_WAIT, CPU); + writel_relaxed(1 << BP_CPU_INTERRUPT_WAIT, CPU + SET); /* 0 is a bad default value for a divider */ - __mxs_setl(1 << BP_ENET_DIV_TIME, ENET); + writel_relaxed(1 << BP_ENET_DIV_TIME, ENET + SET); /* Clear BYPASS for SAIF */ - __mxs_clrl(0x3 << BP_CLKSEQ_BYPASS_SAIF0, CLKSEQ); + writel_relaxed(0x3 << BP_CLKSEQ_BYPASS_SAIF0, CLKSEQ + CLR); /* SAIF has to use frac div for functional operation */ val = readl_relaxed(SAIF0); @@ -109,7 +111,7 @@ static void __init clk_misc_init(void) * Source ssp clock from ref_io than ref_xtal, * as ref_xtal only provides 24 MHz as maximum. */ - __mxs_clrl(0xf << BP_CLKSEQ_BYPASS_SSP0, CLKSEQ); + writel_relaxed(0xf << BP_CLKSEQ_BYPASS_SSP0, CLKSEQ + CLR); /* * 480 MHz seems too high to be ssp clock source directly, @@ -156,6 +158,14 @@ int __init mx28_clocks_init(void) struct device_node *np; u32 i; + np = of_find_compatible_node(NULL, NULL, "fsl,imx28-digctl"); + digctrl = of_iomap(np, 0); + WARN_ON(!digctrl); + + np = of_find_compatible_node(NULL, NULL, "fsl,imx28-clkctrl"); + clkctrl = of_iomap(np, 0); + WARN_ON(!clkctrl); + clk_misc_init(); clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000); @@ -231,20 +241,14 @@ int __init mx28_clocks_init(void) return PTR_ERR(clks[i]); } - np = of_find_compatible_node(NULL, NULL, "fsl,imx28-clkctrl"); - if (np) { - clk_data.clks = clks; - clk_data.clk_num = ARRAY_SIZE(clks); - of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); - } + clk_data.clks = clks; + clk_data.clk_num = ARRAY_SIZE(clks); + of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); - clk_register_clkdev(clks[xbus], NULL, "timrot"); clk_register_clkdev(clks[enet_out], NULL, "enet_out"); for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); - mxs_timer_init(); - return 0; } diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index e507ab7df60b..9002185a0a1a 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -25,7 +25,7 @@ config DW_APB_TIMER_OF config ARMADA_370_XP_TIMER bool -config SUNXI_TIMER +config SUN4I_TIMER bool config VT8500_TIMER diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 96e25319659b..4897f243a000 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -16,7 +16,8 @@ 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 -obj-$(CONFIG_SUNXI_TIMER) += sunxi_timer.o +obj-$(CONFIG_ARCH_MXS) += mxs_timer.o +obj-$(CONFIG_SUN4I_TIMER) += sun4i_timer.o obj-$(CONFIG_ARCH_TEGRA) += tegra20_timer.o obj-$(CONFIG_VT8500_TIMER) += vt8500_timer.o obj-$(CONFIG_ARCH_BCM) += bcm_kona_timer.o diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c index 50c68fef944b..766611d29945 100644 --- a/drivers/clocksource/bcm2835_timer.c +++ b/drivers/clocksource/bcm2835_timer.c @@ -95,23 +95,13 @@ static irqreturn_t bcm2835_time_interrupt(int irq, void *dev_id) } } -static struct of_device_id bcm2835_time_match[] __initconst = { - { .compatible = "brcm,bcm2835-system-timer" }, - {} -}; - -static void __init bcm2835_timer_init(void) +static void __init bcm2835_timer_init(struct device_node *node) { - struct device_node *node; void __iomem *base; u32 freq; int irq; struct bcm2835_timer *timer; - node = of_find_matching_node(NULL, bcm2835_time_match); - if (!node) - panic("No bcm2835 timer node"); - base = of_iomap(node, 0); if (!base) panic("Can't remap registers"); diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c index bdabdaa8d00f..37f5325bec95 100644 --- a/drivers/clocksource/clksrc-of.c +++ b/drivers/clocksource/clksrc-of.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/of.h> +#include <linux/clocksource.h> extern struct of_device_id __clksrc_of_table[]; @@ -26,10 +27,10 @@ void __init clocksource_of_init(void) { struct device_node *np; const struct of_device_id *match; - void (*init_func)(void); + clocksource_of_init_fn init_func; for_each_matching_node_and_match(np, __clksrc_of_table, &match) { init_func = match->data; - init_func(); + init_func(np); } } diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c new file mode 100644 index 000000000000..02af4204af86 --- /dev/null +++ b/drivers/clocksource/mxs_timer.c @@ -0,0 +1,304 @@ +/* + * Copyright (C) 2000-2001 Deep Blue Solutions + * Copyright (C) 2002 Shane Nay (shane@minirl.com) + * Copyright (C) 2006-2007 Pavel Pisa (ppisa@pikron.com) + * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de) + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + */ + +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clockchips.h> +#include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/stmp_device.h> + +#include <asm/mach/time.h> +#include <asm/sched_clock.h> + +/* + * There are 2 versions of the timrot on Freescale MXS-based SoCs. + * The v1 on MX23 only gets 16 bits counter, while v2 on MX28 + * extends the counter to 32 bits. + * + * The implementation uses two timers, one for clock_event and + * another for clocksource. MX28 uses timrot 0 and 1, while MX23 + * uses 0 and 2. + */ + +#define MX23_TIMROT_VERSION_OFFSET 0x0a0 +#define MX28_TIMROT_VERSION_OFFSET 0x120 +#define BP_TIMROT_MAJOR_VERSION 24 +#define BV_TIMROT_VERSION_1 0x01 +#define BV_TIMROT_VERSION_2 0x02 +#define timrot_is_v1() (timrot_major_version == BV_TIMROT_VERSION_1) + +/* + * There are 4 registers for each timrotv2 instance, and 2 registers + * for each timrotv1. So address step 0x40 in macros below strides + * one instance of timrotv2 while two instances of timrotv1. + * + * As the result, HW_TIMROT_XXXn(1) defines the address of timrot1 + * on MX28 while timrot2 on MX23. + */ +/* common between v1 and v2 */ +#define HW_TIMROT_ROTCTRL 0x00 +#define HW_TIMROT_TIMCTRLn(n) (0x20 + (n) * 0x40) +/* v1 only */ +#define HW_TIMROT_TIMCOUNTn(n) (0x30 + (n) * 0x40) +/* v2 only */ +#define HW_TIMROT_RUNNING_COUNTn(n) (0x30 + (n) * 0x40) +#define HW_TIMROT_FIXED_COUNTn(n) (0x40 + (n) * 0x40) + +#define BM_TIMROT_TIMCTRLn_RELOAD (1 << 6) +#define BM_TIMROT_TIMCTRLn_UPDATE (1 << 7) +#define BM_TIMROT_TIMCTRLn_IRQ_EN (1 << 14) +#define BM_TIMROT_TIMCTRLn_IRQ (1 << 15) +#define BP_TIMROT_TIMCTRLn_SELECT 0 +#define BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL 0x8 +#define BV_TIMROTv2_TIMCTRLn_SELECT__32KHZ_XTAL 0xb +#define BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS 0xf + +static struct clock_event_device mxs_clockevent_device; +static enum clock_event_mode mxs_clockevent_mode = CLOCK_EVT_MODE_UNUSED; + +static void __iomem *mxs_timrot_base; +static u32 timrot_major_version; + +static inline void timrot_irq_disable(void) +{ + __raw_writel(BM_TIMROT_TIMCTRLn_IRQ_EN, mxs_timrot_base + + HW_TIMROT_TIMCTRLn(0) + STMP_OFFSET_REG_CLR); +} + +static inline void timrot_irq_enable(void) +{ + __raw_writel(BM_TIMROT_TIMCTRLn_IRQ_EN, mxs_timrot_base + + HW_TIMROT_TIMCTRLn(0) + STMP_OFFSET_REG_SET); +} + +static void timrot_irq_acknowledge(void) +{ + __raw_writel(BM_TIMROT_TIMCTRLn_IRQ, mxs_timrot_base + + HW_TIMROT_TIMCTRLn(0) + STMP_OFFSET_REG_CLR); +} + +static cycle_t timrotv1_get_cycles(struct clocksource *cs) +{ + return ~((__raw_readl(mxs_timrot_base + HW_TIMROT_TIMCOUNTn(1)) + & 0xffff0000) >> 16); +} + +static int timrotv1_set_next_event(unsigned long evt, + struct clock_event_device *dev) +{ + /* timrot decrements the count */ + __raw_writel(evt, mxs_timrot_base + HW_TIMROT_TIMCOUNTn(0)); + + return 0; +} + +static int timrotv2_set_next_event(unsigned long evt, + struct clock_event_device *dev) +{ + /* timrot decrements the count */ + __raw_writel(evt, mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(0)); + + return 0; +} + +static irqreturn_t mxs_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evt = dev_id; + + timrot_irq_acknowledge(); + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static struct irqaction mxs_timer_irq = { + .name = "MXS Timer Tick", + .dev_id = &mxs_clockevent_device, + .flags = IRQF_TIMER | IRQF_IRQPOLL, + .handler = mxs_timer_interrupt, +}; + +#ifdef DEBUG +static const char *clock_event_mode_label[] const = { + [CLOCK_EVT_MODE_PERIODIC] = "CLOCK_EVT_MODE_PERIODIC", + [CLOCK_EVT_MODE_ONESHOT] = "CLOCK_EVT_MODE_ONESHOT", + [CLOCK_EVT_MODE_SHUTDOWN] = "CLOCK_EVT_MODE_SHUTDOWN", + [CLOCK_EVT_MODE_UNUSED] = "CLOCK_EVT_MODE_UNUSED" +}; +#endif /* DEBUG */ + +static void mxs_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + /* Disable interrupt in timer module */ + timrot_irq_disable(); + + if (mode != mxs_clockevent_mode) { + /* Set event time into the furthest future */ + if (timrot_is_v1()) + __raw_writel(0xffff, + mxs_timrot_base + HW_TIMROT_TIMCOUNTn(1)); + else + __raw_writel(0xffffffff, + mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(1)); + + /* Clear pending interrupt */ + timrot_irq_acknowledge(); + } + +#ifdef DEBUG + pr_info("%s: changing mode from %s to %s\n", __func__, + clock_event_mode_label[mxs_clockevent_mode], + clock_event_mode_label[mode]); +#endif /* DEBUG */ + + /* Remember timer mode */ + mxs_clockevent_mode = mode; + + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + pr_err("%s: Periodic mode is not implemented\n", __func__); + break; + case CLOCK_EVT_MODE_ONESHOT: + timrot_irq_enable(); + break; + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_RESUME: + /* Left event sources disabled, no more interrupts appear */ + break; + } +} + +static struct clock_event_device mxs_clockevent_device = { + .name = "mxs_timrot", + .features = CLOCK_EVT_FEAT_ONESHOT, + .set_mode = mxs_set_mode, + .set_next_event = timrotv2_set_next_event, + .rating = 200, +}; + +static int __init mxs_clockevent_init(struct clk *timer_clk) +{ + if (timrot_is_v1()) + mxs_clockevent_device.set_next_event = timrotv1_set_next_event; + mxs_clockevent_device.cpumask = cpumask_of(0); + clockevents_config_and_register(&mxs_clockevent_device, + clk_get_rate(timer_clk), + timrot_is_v1() ? 0xf : 0x2, + timrot_is_v1() ? 0xfffe : 0xfffffffe); + + return 0; +} + +static struct clocksource clocksource_mxs = { + .name = "mxs_timer", + .rating = 200, + .read = timrotv1_get_cycles, + .mask = CLOCKSOURCE_MASK(16), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +static u32 notrace mxs_read_sched_clock_v2(void) +{ + return ~readl_relaxed(mxs_timrot_base + HW_TIMROT_RUNNING_COUNTn(1)); +} + +static int __init mxs_clocksource_init(struct clk *timer_clk) +{ + unsigned int c = clk_get_rate(timer_clk); + + if (timrot_is_v1()) + clocksource_register_hz(&clocksource_mxs, c); + else { + clocksource_mmio_init(mxs_timrot_base + HW_TIMROT_RUNNING_COUNTn(1), + "mxs_timer", c, 200, 32, clocksource_mmio_readl_down); + setup_sched_clock(mxs_read_sched_clock_v2, 32, c); + } + + return 0; +} + +static void __init mxs_timer_init(struct device_node *np) +{ + struct clk *timer_clk; + int irq; + + mxs_timrot_base = of_iomap(np, 0); + WARN_ON(!mxs_timrot_base); + + timer_clk = of_clk_get(np, 0); + if (IS_ERR(timer_clk)) { + pr_err("%s: failed to get clk\n", __func__); + return; + } + + clk_prepare_enable(timer_clk); + + /* + * Initialize timers to a known state + */ + stmp_reset_block(mxs_timrot_base + HW_TIMROT_ROTCTRL); + + /* get timrot version */ + timrot_major_version = __raw_readl(mxs_timrot_base + + (of_device_is_compatible(np, "fsl,imx23-timrot") ? + MX23_TIMROT_VERSION_OFFSET : + MX28_TIMROT_VERSION_OFFSET)); + timrot_major_version >>= BP_TIMROT_MAJOR_VERSION; + + /* one for clock_event */ + __raw_writel((timrot_is_v1() ? + BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL : + BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) | + BM_TIMROT_TIMCTRLn_UPDATE | + BM_TIMROT_TIMCTRLn_IRQ_EN, + mxs_timrot_base + HW_TIMROT_TIMCTRLn(0)); + + /* another for clocksource */ + __raw_writel((timrot_is_v1() ? + BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL : + BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) | + BM_TIMROT_TIMCTRLn_RELOAD, + mxs_timrot_base + HW_TIMROT_TIMCTRLn(1)); + + /* set clocksource timer fixed count to the maximum */ + if (timrot_is_v1()) + __raw_writel(0xffff, + mxs_timrot_base + HW_TIMROT_TIMCOUNTn(1)); + else + __raw_writel(0xffffffff, + mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(1)); + + /* init and register the timer to the framework */ + mxs_clocksource_init(timer_clk); + mxs_clockevent_init(timer_clk); + + /* Make irqs happen */ + irq = irq_of_parse_and_map(np, 0); + setup_irq(irq, &mxs_timer_irq); +} +CLOCKSOURCE_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init); diff --git a/drivers/clocksource/sunxi_timer.c b/drivers/clocksource/sun4i_timer.c index 0ce85e29769b..d4674e78ef35 100644 --- a/drivers/clocksource/sunxi_timer.c +++ b/drivers/clocksource/sun4i_timer.c @@ -22,66 +22,64 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> -#include <linux/sunxi_timer.h> -#include <linux/clk/sunxi.h> -#define TIMER_CTL_REG 0x00 -#define TIMER_CTL_ENABLE (1 << 0) +#define TIMER_IRQ_EN_REG 0x00 +#define TIMER_IRQ_EN(val) (1 << val) #define TIMER_IRQ_ST_REG 0x04 -#define TIMER0_CTL_REG 0x10 -#define TIMER0_CTL_ENABLE (1 << 0) -#define TIMER0_CTL_AUTORELOAD (1 << 1) -#define TIMER0_CTL_ONESHOT (1 << 7) -#define TIMER0_INTVAL_REG 0x14 -#define TIMER0_CNTVAL_REG 0x18 +#define TIMER_CTL_REG(val) (0x10 * val + 0x10) +#define TIMER_CTL_ENABLE (1 << 0) +#define TIMER_CTL_AUTORELOAD (1 << 1) +#define TIMER_CTL_ONESHOT (1 << 7) +#define TIMER_INTVAL_REG(val) (0x10 * val + 0x14) +#define TIMER_CNTVAL_REG(val) (0x10 * val + 0x18) #define TIMER_SCAL 16 static void __iomem *timer_base; -static void sunxi_clkevt_mode(enum clock_event_mode mode, +static void sun4i_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *clk) { - u32 u = readl(timer_base + TIMER0_CTL_REG); + u32 u = readl(timer_base + TIMER_CTL_REG(0)); switch (mode) { case CLOCK_EVT_MODE_PERIODIC: - u &= ~(TIMER0_CTL_ONESHOT); - writel(u | TIMER0_CTL_ENABLE, timer_base + TIMER0_CTL_REG); + u &= ~(TIMER_CTL_ONESHOT); + writel(u | TIMER_CTL_ENABLE, timer_base + TIMER_CTL_REG(0)); break; case CLOCK_EVT_MODE_ONESHOT: - writel(u | TIMER0_CTL_ONESHOT, timer_base + TIMER0_CTL_REG); + writel(u | TIMER_CTL_ONESHOT, timer_base + TIMER_CTL_REG(0)); break; case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_SHUTDOWN: default: - writel(u & ~(TIMER0_CTL_ENABLE), timer_base + TIMER0_CTL_REG); + writel(u & ~(TIMER_CTL_ENABLE), timer_base + TIMER_CTL_REG(0)); break; } } -static int sunxi_clkevt_next_event(unsigned long evt, +static int sun4i_clkevt_next_event(unsigned long evt, struct clock_event_device *unused) { - u32 u = readl(timer_base + TIMER0_CTL_REG); - writel(evt, timer_base + TIMER0_CNTVAL_REG); - writel(u | TIMER0_CTL_ENABLE | TIMER0_CTL_AUTORELOAD, - timer_base + TIMER0_CTL_REG); + u32 u = readl(timer_base + TIMER_CTL_REG(0)); + writel(evt, timer_base + TIMER_CNTVAL_REG(0)); + writel(u | TIMER_CTL_ENABLE | TIMER_CTL_AUTORELOAD, + timer_base + TIMER_CTL_REG(0)); return 0; } -static struct clock_event_device sunxi_clockevent = { - .name = "sunxi_tick", +static struct clock_event_device sun4i_clockevent = { + .name = "sun4i_tick", .rating = 300, .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_mode = sunxi_clkevt_mode, - .set_next_event = sunxi_clkevt_next_event, + .set_mode = sun4i_clkevt_mode, + .set_next_event = sun4i_clkevt_next_event, }; -static irqreturn_t sunxi_timer_interrupt(int irq, void *dev_id) +static irqreturn_t sun4i_timer_interrupt(int irq, void *dev_id) { struct clock_event_device *evt = (struct clock_event_device *)dev_id; @@ -91,30 +89,20 @@ static irqreturn_t sunxi_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction sunxi_timer_irq = { - .name = "sunxi_timer0", +static struct irqaction sun4i_timer_irq = { + .name = "sun4i_timer0", .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = sunxi_timer_interrupt, - .dev_id = &sunxi_clockevent, -}; - -static struct of_device_id sunxi_timer_dt_ids[] = { - { .compatible = "allwinner,sunxi-timer" }, - { } + .handler = sun4i_timer_interrupt, + .dev_id = &sun4i_clockevent, }; -void __init sunxi_timer_init(void) +static void __init sun4i_timer_init(struct device_node *node) { - struct device_node *node; unsigned long rate = 0; struct clk *clk; int ret, irq; u32 val; - node = of_find_matching_node(NULL, sunxi_timer_dt_ids); - if (!node) - panic("No sunxi timer node"); - timer_base = of_iomap(node, 0); if (!timer_base) panic("Can't map registers"); @@ -123,8 +111,6 @@ void __init sunxi_timer_init(void) if (irq <= 0) panic("Can't parse IRQ"); - sunxi_init_clocks(); - clk = of_clk_get(node, 0); if (IS_ERR(clk)) panic("Can't get timer clock"); @@ -132,29 +118,31 @@ void __init sunxi_timer_init(void) rate = clk_get_rate(clk); writel(rate / (TIMER_SCAL * HZ), - timer_base + TIMER0_INTVAL_REG); + timer_base + TIMER_INTVAL_REG(0)); /* set clock source to HOSC, 16 pre-division */ - val = readl(timer_base + TIMER0_CTL_REG); + val = readl(timer_base + TIMER_CTL_REG(0)); val &= ~(0x07 << 4); val &= ~(0x03 << 2); val |= (4 << 4) | (1 << 2); - writel(val, timer_base + TIMER0_CTL_REG); + writel(val, timer_base + TIMER_CTL_REG(0)); /* set mode to auto reload */ - val = readl(timer_base + TIMER0_CTL_REG); - writel(val | TIMER0_CTL_AUTORELOAD, timer_base + TIMER0_CTL_REG); + val = readl(timer_base + TIMER_CTL_REG(0)); + writel(val | TIMER_CTL_AUTORELOAD, timer_base + TIMER_CTL_REG(0)); - ret = setup_irq(irq, &sunxi_timer_irq); + ret = setup_irq(irq, &sun4i_timer_irq); if (ret) pr_warn("failed to setup irq %d\n", irq); /* Enable timer0 interrupt */ - val = readl(timer_base + TIMER_CTL_REG); - writel(val | TIMER_CTL_ENABLE, timer_base + TIMER_CTL_REG); + val = readl(timer_base + TIMER_IRQ_EN_REG); + writel(val | TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_EN_REG); - sunxi_clockevent.cpumask = cpumask_of(0); + sun4i_clockevent.cpumask = cpumask_of(0); - clockevents_config_and_register(&sunxi_clockevent, rate / TIMER_SCAL, + clockevents_config_and_register(&sun4i_clockevent, rate / TIMER_SCAL, 0x1, 0xff); } +CLOCKSOURCE_OF_DECLARE(sun4i, "allwinner,sun4i-timer", + sun4i_timer_init); diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c index 0bde03feb095..ae877b021b54 100644 --- a/drivers/clocksource/tegra20_timer.c +++ b/drivers/clocksource/tegra20_timer.c @@ -154,29 +154,12 @@ static struct irqaction tegra_timer_irq = { .dev_id = &tegra_clockevent, }; -static const struct of_device_id timer_match[] __initconst = { - { .compatible = "nvidia,tegra20-timer" }, - {} |