* OMAP2 support by Juha Yrjola
* API improvements and OMAP2 clock framework support by Timo Teras
*
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
* 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
#include <linux/io.h>
#include <linux/module.h>
#include <mach/hardware.h>
-#include <mach/dmtimer.h>
+#include <plat/dmtimer.h>
#include <mach/irqs.h>
/* register offsets */
struct omap_dm_timer {
unsigned long phys_base;
int irq;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#ifdef CONFIG_ARCH_OMAP2PLUS
struct clk *iclk, *fclk;
#endif
void __iomem *io_base;
unsigned posted:1;
};
-#ifdef CONFIG_ARCH_OMAP1
-
-#define omap_dm_clk_enable(x)
-#define omap_dm_clk_disable(x)
-#define omap2_dm_timers NULL
-#define omap2_dm_source_names NULL
-#define omap2_dm_source_clocks NULL
-#define omap3_dm_timers NULL
-#define omap3_dm_source_names NULL
-#define omap3_dm_source_clocks NULL
+static int dm_timer_count;
+#ifdef CONFIG_ARCH_OMAP1
static struct omap_dm_timer omap1_dm_timers[] = {
{ .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 },
{ .phys_base = 0xfffb1c00, .irq = INT_1610_GPTIMER2 },
{ .phys_base = 0xfffbd400, .irq = INT_1610_GPTIMER8 },
};
-static const int dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
+static const int omap1_dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
-#elif defined(CONFIG_ARCH_OMAP2)
-
-#define omap_dm_clk_enable(x) clk_enable(x)
-#define omap_dm_clk_disable(x) clk_disable(x)
+#else
#define omap1_dm_timers NULL
-#define omap3_dm_timers NULL
-#define omap3_dm_source_names NULL
-#define omap3_dm_source_clocks NULL
+#define omap1_dm_timer_count 0
+#endif /* CONFIG_ARCH_OMAP1 */
+#ifdef CONFIG_ARCH_OMAP2
static struct omap_dm_timer omap2_dm_timers[] = {
{ .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 },
{ .phys_base = 0x4802a000, .irq = INT_24XX_GPTIMER2 },
};
static struct clk *omap2_dm_source_clocks[3];
-static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
+static const int omap2_dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
-#elif defined(CONFIG_ARCH_OMAP3)
-
-#define omap_dm_clk_enable(x) clk_enable(x)
-#define omap_dm_clk_disable(x) clk_disable(x)
-#define omap1_dm_timers NULL
+#else
#define omap2_dm_timers NULL
+#define omap2_dm_timer_count 0
#define omap2_dm_source_names NULL
#define omap2_dm_source_clocks NULL
+#endif /* CONFIG_ARCH_OMAP2 */
+#ifdef CONFIG_ARCH_OMAP3
static struct omap_dm_timer omap3_dm_timers[] = {
{ .phys_base = 0x48318000, .irq = INT_24XX_GPTIMER1 },
{ .phys_base = 0x49032000, .irq = INT_24XX_GPTIMER2 },
};
static struct clk *omap3_dm_source_clocks[2];
-static const int dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
+static const int omap3_dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
#else
+#define omap3_dm_timers NULL
+#define omap3_dm_timer_count 0
+#define omap3_dm_source_names NULL
+#define omap3_dm_source_clocks NULL
+#endif /* CONFIG_ARCH_OMAP3 */
+
+#ifdef CONFIG_ARCH_OMAP4
+static struct omap_dm_timer omap4_dm_timers[] = {
+ { .phys_base = 0x4a318000, .irq = OMAP44XX_IRQ_GPT1 },
+ { .phys_base = 0x48032000, .irq = OMAP44XX_IRQ_GPT2 },
+ { .phys_base = 0x48034000, .irq = OMAP44XX_IRQ_GPT3 },
+ { .phys_base = 0x48036000, .irq = OMAP44XX_IRQ_GPT4 },
+ { .phys_base = 0x40138000, .irq = OMAP44XX_IRQ_GPT5 },
+ { .phys_base = 0x4013a000, .irq = OMAP44XX_IRQ_GPT6 },
+ { .phys_base = 0x4013a000, .irq = OMAP44XX_IRQ_GPT7 },
+ { .phys_base = 0x4013e000, .irq = OMAP44XX_IRQ_GPT8 },
+ { .phys_base = 0x4803e000, .irq = OMAP44XX_IRQ_GPT9 },
+ { .phys_base = 0x48086000, .irq = OMAP44XX_IRQ_GPT10 },
+ { .phys_base = 0x48088000, .irq = OMAP44XX_IRQ_GPT11 },
+ { .phys_base = 0x4a320000, .irq = OMAP44XX_IRQ_GPT12 },
+};
+static const char *omap4_dm_source_names[] __initdata = {
+ "sys_ck",
+ "omap_32k_fck",
+ NULL
+};
+static struct clk *omap4_dm_source_clocks[2];
+static const int omap4_dm_timer_count = ARRAY_SIZE(omap4_dm_timers);
-#error OMAP architecture not supported!
-
-#endif
+#else
+#define omap4_dm_timers NULL
+#define omap4_dm_timer_count 0
+#define omap4_dm_source_names NULL
+#define omap4_dm_source_clocks NULL
+#endif /* CONFIG_ARCH_OMAP4 */
static struct omap_dm_timer *dm_timers;
static const char **dm_source_names;
if (timer->enabled)
return;
- omap_dm_clk_enable(timer->fclk);
- omap_dm_clk_enable(timer->iclk);
+#ifdef CONFIG_ARCH_OMAP2PLUS
+ if (cpu_class_is_omap2()) {
+ clk_enable(timer->fclk);
+ clk_enable(timer->iclk);
+ }
+#endif
timer->enabled = 1;
}
if (!timer->enabled)
return;
- omap_dm_clk_disable(timer->iclk);
- omap_dm_clk_disable(timer->fclk);
+#ifdef CONFIG_ARCH_OMAP2PLUS
+ if (cpu_class_is_omap2()) {
+ clk_disable(timer->iclk);
+ clk_disable(timer->fclk);
+ }
+#endif
timer->enabled = 0;
}
}
EXPORT_SYMBOL_GPL(omap_dm_timer_modify_idlect_mask);
-#elif defined(CONFIG_ARCH_OMAP2) || defined (CONFIG_ARCH_OMAP3)
+#else
struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
{
if (l & OMAP_TIMER_CTRL_ST) {
l &= ~0x1;
omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
+#ifdef CONFIG_ARCH_OMAP2PLUS
+ /* Readback to make sure write has completed */
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG);
+ /*
+ * Wait for functional clock period x 3.5 to make sure that
+ * timer is stopped
+ */
+ udelay(3500000 / clk_get_rate(timer->fclk) + 1);
+ /* Ack possibly pending interrupt */
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_STAT_REG,
+ OMAP_TIMER_INT_OVERFLOW);
+#endif
}
}
EXPORT_SYMBOL_GPL(omap_dm_timer_stop);
int __init omap_dm_timer_init(void)
{
struct omap_dm_timer *timer;
- int i;
+ int i, map_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */
if (!(cpu_is_omap16xx() || cpu_class_is_omap2()))
return -ENODEV;
spin_lock_init(&dm_timer_lock);
- if (cpu_class_is_omap1())
+ if (cpu_class_is_omap1()) {
dm_timers = omap1_dm_timers;
- else if (cpu_is_omap24xx()) {
+ dm_timer_count = omap1_dm_timer_count;
+ map_size = SZ_2K;
+ } else if (cpu_is_omap24xx()) {
dm_timers = omap2_dm_timers;
+ dm_timer_count = omap2_dm_timer_count;
dm_source_names = omap2_dm_source_names;
dm_source_clocks = omap2_dm_source_clocks;
} else if (cpu_is_omap34xx()) {
dm_timers = omap3_dm_timers;
+ dm_timer_count = omap3_dm_timer_count;
dm_source_names = omap3_dm_source_names;
dm_source_clocks = omap3_dm_source_clocks;
+ } else if (cpu_is_omap44xx()) {
+ dm_timers = omap4_dm_timers;
+ dm_timer_count = omap4_dm_timer_count;
+ dm_source_names = omap4_dm_source_names;
+ dm_source_clocks = omap4_dm_source_clocks;
}
if (cpu_class_is_omap2())
for (i = 0; i < dm_timer_count; i++) {
timer = &dm_timers[i];
- timer->io_base = IO_ADDRESS(timer->phys_base);
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+
+ /* Static mapping, never released */
+ timer->io_base = ioremap(timer->phys_base, map_size);
+ BUG_ON(!timer->io_base);
+
+#ifdef CONFIG_ARCH_OMAP2PLUS
if (cpu_class_is_omap2()) {
char clk_name[16];
sprintf(clk_name, "gpt%d_ick", i + 1);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff