From: Thara Gopinath <thara@xxxxxx>
This patch coverts OMAP1 dmtimers into a platform devices
and then registers with device model framework so that it
can be bound to corresponding driver.
Signed-off-by: Partha Basak <p-basak2@xxxxxx>
Signed-off-by: Thara Gopinath <thara@xxxxxx>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@xxxxxx>
Cc: Cousson, Benoit <b-cousson@xxxxxx>
Cc: Paul Walmsley <paul@xxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap1/Makefile | 2 +-
arch/arm/mach-omap1/dmtimer.c | 174 +++++++++++++++++++++++++++++++++++++++++
arch/arm/plat-omap/dmtimer.c | 46 ++---------
3 files changed, 182 insertions(+), 40 deletions(-)
create mode 100644 arch/arm/mach-omap1/dmtimer.c
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile
index 9a304d8..0001659 100644
--- a/arch/arm/mach-omap1/Makefile
+++ b/arch/arm/mach-omap1/Makefile
@@ -4,7 +4,7 @@
# Common support
obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o
-obj-y += clock.o clock_data.o opp_data.o
+obj-y += clock.o clock_data.o opp_data.o dmtimer.o
obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
diff --git a/arch/arm/mach-omap1/dmtimer.c b/arch/arm/mach-omap1/dmtimer.c
new file mode 100644
index 0000000..75ce978
--- /dev/null
+++ b/arch/arm/mach-omap1/dmtimer.c
@@ -0,0 +1,174 @@
+/**
+ * OMAP1 Dual-Mode Timers
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@xxxxxx>
+ * Tarun Kanti DebBarma <tarun.kanti@xxxxxx>
+ *
+ * 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/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <mach/irqs.h>
+#include <plat/dmtimer.h>
+#include <plat/omap_device.h>
+
+#define OMAP1610_GPTIMER1_BASE 0xfffb1400
+#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
+#define OMAP1610_GPTIMER3_BASE 0xfffb2400
+#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
+#define OMAP1610_GPTIMER5_BASE 0xfffb3400
+#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
+#define OMAP1610_GPTIMER7_BASE 0xfffb7400
+#define OMAP1610_GPTIMER8_BASE 0xfffbd400
+
+#define OMAP1_DM_TIMER_COUNT 8
+/* omap 1 timers register map */
+static u32 omap_timer_reg_map_v1[] = {
+ [OMAP_TIMER_ID_REG] = (0x00 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_OCP_CFG_REG] = (0x10 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_SYS_STAT_REG] = (0x14 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_STAT_REG] = (0x18 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_INT_EN_REG] = (0x1c | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_WAKEUP_EN_REG] = (0x20 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_CTRL_REG] = (0x24 | (WP_TCLR << WPSHIFT)),
+ [OMAP_TIMER_COUNTER_REG] = (0x28 | (WP_TCRR << WPSHIFT)),
+ [OMAP_TIMER_LOAD_REG] = (0x2c | (WP_TLDR << WPSHIFT)),
+ [OMAP_TIMER_TRIGGER_REG] = (0x30 | (WP_TTGR << WPSHIFT)),
+ [OMAP_TIMER_WRITE_PEND_REG] = (0x34 | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_MATCH_REG] = (0x38 | (WP_TMAR << WPSHIFT)),
+ [OMAP_TIMER_CAPTURE_REG] = (0x3c | (WP_NONE << WPSHIFT)),
+ [OMAP_TIMER_IF_CTRL_REG] = (0x40 | (WP_NONE << WPSHIFT)),
+};
+
+static int omap1_dm_timer_set_src(struct platform_device *pdev,
+ int source)
+{
+ int n = (pdev->id) << 1;
+ u32 l;
+
+ l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
+ l |= source << n;
+ omap_writel(l, MOD_CONF_CTRL_1);
+
+ return 0;
+}
+
+int __init omap1_dmtimer_device_init(void)
+{
+ int i;
+ int ret;
+ struct dmtimer_platform_data *pdata;
+ struct platform_device *pdev;
+
+ pr_debug("%s:+\n", __func__);
+
+ if (!cpu_is_omap16xx())
+ return 0;
+
+ for (i = 0; i < OMAP1_DM_TIMER_COUNT; i++) {
+ struct resource res[2];
+ u32 base, irq;
+
+ switch (i) {
+ case 0:
+ base = OMAP1610_GPTIMER1_BASE;
+ irq = INT_1610_GPTIMER1;
+ break;
+ case 1:
+ base = OMAP1610_GPTIMER2_BASE;
+ irq = INT_1610_GPTIMER2;
+ break;
+ case 2:
+ base = OMAP1610_GPTIMER3_BASE;
+ irq = INT_1610_GPTIMER3;
+ break;
+ case 3:
+ base = OMAP1610_GPTIMER4_BASE;
+ irq = INT_1610_GPTIMER4;
+ break;
+ case 4:
+ base = OMAP1610_GPTIMER5_BASE;
+ irq = INT_1610_GPTIMER5;
+ break;
+ case 5:
+ base = OMAP1610_GPTIMER6_BASE;
+ irq = INT_1610_GPTIMER6;
+ break;
+ case 6:
+ base = OMAP1610_GPTIMER7_BASE;
+ irq = INT_1610_GPTIMER7;
+ break;
+ case 7:
+ base = OMAP1610_GPTIMER8_BASE;
+ irq = INT_1610_GPTIMER8;
+ break;
+ default:
+ /* Should never reach here */
+ return -EINVAL;
+ }
+
+ pdev = platform_device_alloc("dmtimer", i);
+ if (!pdev) {
+ pr_err("%s: Unable to device alloc for dmtimer%d\n",
+ __func__, i);
+ return -ENOMEM;
+ }
+
+ memset(res, 0, 2 * sizeof(struct resource));
+ res[0].start = base;
+ res[0].end = base + 0xff;
+ res[0].flags = IORESOURCE_MEM;
+ res[1].start = res[1].end = irq;
+ res[1].flags = IORESOURCE_IRQ;
+ ret = platform_device_add_resources(pdev, res,
+ ARRAY_SIZE(res));
+ if (ret) {
+ pr_err("%s: Unable to add resources for %s.%d\n",
+ __func__, pdev->name, pdev->id);
+ goto err_free_pdev;
+ }
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ pr_err("%s: Unable to allocate pdata for %s.%d\n",
+ __func__, pdev->name, pdev->id);
+ ret = -ENOMEM;
+ goto err_free_pdev;
+ }
+
+ pdata->set_timer_src = omap1_dm_timer_set_src;
+ pdata->reg_map = omap_timer_reg_map_v1;
+ pdata->is_early_init = 0;
+ ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
+ if (ret) {
+ pr_err("%s: Unable to add platform data for %s.%d\n",
+ __func__, pdev->name, pdev->id);
+ goto err_free_pdata;
+ }
+ ret = platform_device_add(pdev);
+ if (ret) {
+ pr_err("%s: Unable to add platform device for %s.%d\n",
+ __func__, pdev->name, pdev->id);
+ goto err_free_pdata;
+ }
+
+ pr_info("%s.%d: registered\n", pdev->name, pdev->id);
+ }
+
+ return 0;
+
+err_free_pdata:
+ kfree(pdata);
+
+err_free_pdev:
+ platform_device_del(pdev);
+
+ return ret;
+}
+arch_initcall(omap1_dmtimer_device_init);
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index fc3513e..2017b1d 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -163,25 +163,6 @@ struct omap_dm_timer {
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 = 0xfffb2400, .irq = INT_1610_GPTIMER3 },
- { .phys_base = 0xfffb2c00, .irq = INT_1610_GPTIMER4 },
- { .phys_base = 0xfffb3400, .irq = INT_1610_GPTIMER5 },
- { .phys_base = 0xfffb3c00, .irq = INT_1610_GPTIMER6 },
- { .phys_base = 0xfffb7400, .irq = INT_1610_GPTIMER7 },
- { .phys_base = 0xfffbd400, .irq = INT_1610_GPTIMER8 },
-};
-
-static const int omap1_dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
-
-#else
-#define omap1_dm_timers 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 },
@@ -548,22 +529,9 @@ void omap_dm_timer_stop(struct omap_dm_timer *timer)
}
EXPORT_SYMBOL_GPL(omap_dm_timer_stop);
-#ifdef CONFIG_ARCH_OMAP1
-int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
-{
- int n = (timer - dm_timers) << 1;
- u32 l;
- l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
- l |= source << n;
- omap_writel(l, MOD_CONF_CTRL_1);
- return 0;
-}
-EXPORT_SYMBOL_GPL(omap_dm_timer_set_source);
-
-#else
int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
{
@@ -572,9 +540,14 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
if (source < 0 || source >= 3)
return -EINVAL;
+#ifdef CONFIG_ARCH_OMAP1
+ if (pdata->set_timer_src)
+ ret = pdata->set_timer_src(timer->pdev, source);
+#else
clk_disable(timer->fclk);
ret = clk_set_parent(timer->fclk, dm_source_clocks[source]);
clk_enable(timer->fclk);
+#endif
/*
* When the functional clock disappears, too quick writes seem
@@ -586,7 +559,6 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
}
EXPORT_SYMBOL_GPL(omap_dm_timer_set_source);
-#endif
void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload,
unsigned int load)
@@ -734,15 +706,11 @@ int __init omap_dm_timer_init(void)
struct omap_dm_timer *timer;
int i, map_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */
- if (!(cpu_is_omap16xx() || cpu_class_is_omap2()))
+ if (!cpu_class_is_omap2())
return -ENODEV;
- if (cpu_class_is_omap1()) {
- dm_timers = omap1_dm_timers;
- dm_timer_count = omap1_dm_timer_count;
- map_size = SZ_2K;
- } else if (cpu_is_omap24xx()) {
+ if (cpu_is_omap24xx()) {
dm_timers = omap2_dm_timers;
dm_timer_count = omap2_dm_timer_count;
dm_source_names = omap2_dm_source_names;
--
1.6.0.4
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