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author | John Crispin <john@openwrt.org> | 2013-07-22 13:52:32 +0000 |
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committer | John Crispin <john@openwrt.org> | 2013-07-22 13:52:32 +0000 |
commit | 5525b2136e90fcfc8823b519fa4aa2499f0120ba (patch) | |
tree | e614278bc48faf84a9ff7de35d9de77b7e630fb6 /target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch | |
parent | ec6954e64e7cd7e503b62ab73381cfa0adce24fc (diff) | |
download | master-31e0f0ae-5525b2136e90fcfc8823b519fa4aa2499f0120ba.tar.gz master-31e0f0ae-5525b2136e90fcfc8823b519fa4aa2499f0120ba.tar.bz2 master-31e0f0ae-5525b2136e90fcfc8823b519fa4aa2499f0120ba.zip |
ralink: set v3.10 as default
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 37497
Diffstat (limited to 'target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch')
-rw-r--r-- | target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch b/target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch deleted file mode 100644 index be45ae4fff..0000000000 --- a/target/linux/ramips/patches-3.9/0142-clocksource-MIPS-ralink-add-support-for-systick-time.patch +++ /dev/null @@ -1,243 +0,0 @@ -From bc350a91da176ae8573c0755c66f5ee1911495bc Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Tue, 30 Apr 2013 12:35:50 +0200 -Subject: [PATCH 142/164] clocksource: MIPS: ralink: add support for systick - timer found on newer ralink SoC - -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - arch/mips/ralink/Kconfig | 2 + - arch/mips/ralink/clk.c | 1 + - drivers/clocksource/Kconfig | 6 ++ - drivers/clocksource/Makefile | 1 + - drivers/clocksource/cevt-rt3352.c | 162 +++++++++++++++++++++++++++++++++++++ - include/linux/clocksource.h | 1 + - 6 files changed, 173 insertions(+) - create mode 100644 drivers/clocksource/cevt-rt3352.c - ---- a/arch/mips/ralink/Kconfig -+++ b/arch/mips/ralink/Kconfig -@@ -14,6 +14,7 @@ choice - select USB_ARCH_HAS_HCD - select USB_ARCH_HAS_OHCI - select USB_ARCH_HAS_EHCI -+ select CLKEVT_RT3352 - - config SOC_RT3883 - bool "RT3883" -@@ -22,6 +23,7 @@ choice - - config SOC_MT7620 - bool "MT7620" -+ select CLKEVT_RT3352 - - endchoice - ---- a/arch/mips/ralink/clk.c -+++ b/arch/mips/ralink/clk.c -@@ -69,4 +69,5 @@ void __init plat_time_init(void) - pr_info("CPU Clock: %ldMHz\n", clk_get_rate(clk) / 1000000); - mips_hpt_frequency = clk_get_rate(clk) / 2; - clk_put(clk); -+ clocksource_of_init(); - } ---- a/drivers/clocksource/Kconfig -+++ b/drivers/clocksource/Kconfig -@@ -7,6 +7,12 @@ config CLKSRC_I8253 - config CLKEVT_I8253 - bool - -+config CLKEVT_RT3352 -+ bool -+ depends on MIPS && RALINK -+ select CLKSRC_OF -+ select CLKSRC_MMIO -+ - config I8253_LOCK - bool - ---- a/drivers/clocksource/Makefile -+++ b/drivers/clocksource/Makefile -@@ -10,6 +10,7 @@ obj-$(CONFIG_SH_TIMER_TMU) += sh_tmu.o - obj-$(CONFIG_EM_TIMER_STI) += em_sti.o - obj-$(CONFIG_CLKBLD_I8253) += i8253.o - obj-$(CONFIG_CLKSRC_MMIO) += mmio.o -+obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o - obj-$(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 ---- /dev/null -+++ b/drivers/clocksource/cevt-rt3352.c -@@ -0,0 +1,162 @@ -+/* -+ * This file is subject to the terms and conditions of the GNU General Public -+ * License. See the file "COPYING" in the main directory of this archive -+ * for more details. -+ * -+ * Copyright (C) 2013 by John Crispin <blogic@openwrt.org> -+ */ -+ -+#include <linux/clockchips.h> -+#include <linux/clocksource.h> -+#include <linux/interrupt.h> -+#include <linux/reset.h> -+#include <linux/init.h> -+#include <linux/of.h> -+#include <linux/of_irq.h> -+#include <linux/of_address.h> -+ -+#include <asm/mach-ralink/ralink_regs.h> -+#include <asm/time.h> -+ -+#define SYSTICK_FREQ (50 * 1000) -+ -+#define SYSTICK_CONFIG 0x00 -+#define SYSTICK_COMPARE 0x04 -+#define SYSTICK_COUNT 0x08 -+ -+/* route systick irq to mips irq 7 instead of the r4k-timer */ -+#define CFG_EXT_STK_EN 0x2 -+/* enable the counter */ -+#define CFG_CNT_EN 0x1 -+ -+struct systick_device { -+ void __iomem *membase; -+ struct clock_event_device dev; -+ int irq_requested; -+ int freq_scale; -+}; -+ -+static void systick_set_clock_mode(enum clock_event_mode mode, -+ struct clock_event_device *evt); -+ -+static int systick_next_event(unsigned long delta, -+ struct clock_event_device *evt) -+{ -+ struct systick_device *sdev = container_of(evt, struct systick_device, dev); -+ u32 count; -+ -+ count = ioread32(sdev->membase + SYSTICK_COUNT); -+ count = (count + delta) % SYSTICK_FREQ; -+ iowrite32(count + delta, sdev->membase + SYSTICK_COMPARE); -+ -+ return 0; -+} -+ -+static void systick_event_handler(struct clock_event_device *dev) -+{ -+ /* noting to do here */ -+} -+ -+static irqreturn_t systick_interrupt(int irq, void *dev_id) -+{ -+ struct clock_event_device *dev = (struct clock_event_device *) dev_id; -+ -+ dev->event_handler(dev); -+ -+ return IRQ_HANDLED; -+} -+ -+static struct systick_device systick = { -+ .dev = { -+ /* cevt-r4k uses 300, make sure systick gets used if available */ -+ .rating = 310, -+ .features = CLOCK_EVT_FEAT_ONESHOT, -+ .set_next_event = systick_next_event, -+ .set_mode = systick_set_clock_mode, -+ .event_handler = systick_event_handler, -+ }, -+}; -+ -+static struct irqaction systick_irqaction = { -+ .handler = systick_interrupt, -+ .flags = IRQF_PERCPU | IRQF_TIMER, -+ .dev_id = &systick.dev, -+}; -+ -+/* ugly hack */ -+#ifdef CONFIG_SOC_MT7620 -+ -+#define CLK_LUT_CFG 0x40 -+#define SLEEP_EN BIT(31) -+ -+static inline void mt7620_freq_scaling(struct systick_device *sdev, int status) -+{ -+ if (sdev->freq_scale == status) -+ return; -+ -+ sdev->freq_scale = status; -+ -+ pr_info("%s: %s autosleep mode\n", systick.dev.name, (status) ? ("enable") : ("disable")); -+ if (status) -+ rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) | SLEEP_EN, CLK_LUT_CFG); -+ else -+ rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) & ~SLEEP_EN, CLK_LUT_CFG); -+} -+#else -+static inline void mt7620_freq_scaling(struct systick_device *sdev, int status) {} -+#endif -+ -+static void systick_set_clock_mode(enum clock_event_mode mode, -+ struct clock_event_device *evt) -+{ -+ struct systick_device *sdev = container_of(evt, struct systick_device, dev); -+ -+ switch (mode) { -+ case CLOCK_EVT_MODE_ONESHOT: -+ if (!sdev->irq_requested) -+ setup_irq(systick.dev.irq, &systick_irqaction); -+ mt7620_freq_scaling(sdev, 1); -+ sdev->irq_requested = 1; -+ iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN, systick.membase + SYSTICK_CONFIG); -+ break; -+ -+ case CLOCK_EVT_MODE_SHUTDOWN: -+ if (sdev->irq_requested) -+ free_irq(systick.dev.irq, &systick_irqaction); -+ mt7620_freq_scaling(sdev, 0); -+ sdev->irq_requested = 0; -+ iowrite32(0, systick.membase + SYSTICK_CONFIG); -+ break; -+ -+ default: -+ pr_err("%s: Unhandeled mips clock_mode\n", systick.dev.name); -+ break; -+ } -+} -+ -+static void __init ralink_systick_init(struct device_node *np) -+{ -+ systick.membase = of_iomap(np, 0); -+ if (!systick.membase) { -+ pr_err("%s: of_iomap failed", np->name); -+ return; -+ } -+ -+ clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name, -+ SYSTICK_FREQ, 301, 16, clocksource_mmio_readl_up); -+ -+ systick_irqaction.name = np->name; -+ systick.dev.name = np->name; -+ clockevent_set_clock(&systick.dev, SYSTICK_FREQ); -+ systick.dev.max_delta_ns = clockevent_delta2ns(0x7fff, &systick.dev); -+ systick.dev.min_delta_ns = clockevent_delta2ns(0x3, &systick.dev); -+ systick.dev.irq = irq_of_parse_and_map(np, 0); -+ if (!systick.dev.irq) -+ panic("%s: request_irq failed", np->name); -+ -+ clockevents_register_device(&systick.dev); -+ -+ pr_info("%s: runing - mult: %d, shift: %d\n", np->name, systick.dev.mult, systick.dev.shift); -+} -+ -+CLOCKSOURCE_OF_DECLARE(systick, "ralink,cevt-systick", ralink_systick_init); ---- a/include/linux/clocksource.h -+++ b/include/linux/clocksource.h -@@ -340,6 +340,7 @@ extern void clocksource_of_init(void); - __used __section(__clksrc_of_table) \ - = { .compatible = compat, .data = fn }; - #else -+static inline void clocksource_of_init(void) {} - #define CLOCKSOURCE_OF_DECLARE(name, compat, fn) - #endif - |