@@ -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
new file mode 100644
@@ -0,0 +1,217 @@
+/**
+ * OMAP1 Dual-Mode Timers - platform device registration
+ *
+ * Contains first level initialization routines which internally
+ * generates timer device information and registers with linux
+ * device model. It also has low level function to chnage the timer
+ * input clock source.
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ * Tarun Kanti DebBarma <tarun.kanti@ti.com>
+ * Thara Gopinath <thara@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+
+#include <plat/dmtimer.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
+
+#define OMAP_TIMER_OCP_CFG_REG 0x10
+#define OMAP_TIMER_SYS_STAT_REG 0x14
+#define OMAP_TIMER_IF_CTRL_REG 0x40
+
+static int omap1_dm_timer_set_src(struct platform_device *pdev,
+ int source)
+{
+ int n = (pdev->id - 1) << 1;
+ u32 l;
+
+ l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
+ l |= source << n;
+ omap_writel(l, MOD_CONF_CTRL_1);
+
+ return 0;
+}
+
+static void omap1_dm_timer_wait_for_reset(struct omap_dm_timer *timer)
+{
+ int c;
+ struct dmtimer_platform_data *pdata = timer->pdev->dev.platform_data;
+
+ c = 0;
+ while (!(pdata->dm_timer_read_reg(timer, OMAP_TIMER_SYS_STAT_REG) & 1)) {
+ c++;
+ if (c > 100000) {
+ printk(KERN_ERR "Timer failed to reset.\n");
+ return;
+ }
+ }
+}
+
+static void omap1_dm_timer_reset(struct omap_dm_timer *timer)
+{
+ u32 l;
+ struct dmtimer_platform_data *pdata = timer->pdev->dev.platform_data;
+
+ if (timer->pdev->id != 1) {
+ pdata->dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, 0x06);
+ omap1_dm_timer_wait_for_reset(timer);
+ }
+
+ l = pdata->dm_timer_read_reg(timer, OMAP_TIMER_OCP_CFG_REG);
+ l |= 0x02 << 3; /* Set to smart-idle mode */
+ l |= 0x2 << 8; /* Set clock activity to perserve f-clock on idle */
+ pdata->dm_timer_write_reg(timer, OMAP_TIMER_OCP_CFG_REG, l);
+}
+
+
+int __init omap1_dm_timer_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 = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
+ struct resource res[2];
+ u32 base, irq;
+
+ switch (i) {
+ case 1:
+ base = OMAP1610_GPTIMER1_BASE;
+ irq = INT_1610_GPTIMER1;
+ break;
+ case 2:
+ base = OMAP1610_GPTIMER2_BASE;
+ irq = INT_1610_GPTIMER2;
+ break;
+ case 3:
+ base = OMAP1610_GPTIMER3_BASE;
+ irq = INT_1610_GPTIMER3;
+ break;
+ case 4:
+ base = OMAP1610_GPTIMER4_BASE;
+ irq = INT_1610_GPTIMER4;
+ break;
+ case 5:
+ base = OMAP1610_GPTIMER5_BASE;
+ irq = INT_1610_GPTIMER5;
+ break;
+ case 6:
+ base = OMAP1610_GPTIMER6_BASE;
+ irq = INT_1610_GPTIMER6;
+ break;
+ case 7:
+ base = OMAP1610_GPTIMER7_BASE;
+ irq = INT_1610_GPTIMER7;
+ break;
+ case 8:
+ base = OMAP1610_GPTIMER8_BASE;
+ irq = INT_1610_GPTIMER8;
+ break;
+ default:
+ /*
+ * not supposed to reach here.
+ * this is to remove warning.
+ */
+ return -EINVAL;
+ }
+
+ pdev = platform_device_alloc("omap_timer", i);
+ if (!pdev) {
+ pr_err("%s: Failed 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 + 0x46;
+ res[0].flags = IORESOURCE_MEM;
+ res[1].start = irq;
+ res[1].end = irq;
+ res[1].flags = IORESOURCE_IRQ;
+ ret = platform_device_add_resources(pdev, res,
+ ARRAY_SIZE(res));
+ if (ret) {
+ dev_err(&pdev->dev, "%s: Failed to add resources.\n",
+ __func__);
+ goto err_free_pdev;
+ }
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "%s: Failed to allocate pdata.\n",
+ __func__);
+ ret = -ENOMEM;
+ goto err_free_pdata;
+ }
+
+ pdata->dm_timer_reset = omap1_dm_timer_reset;
+ pdata->set_timer_src = omap1_dm_timer_set_src;
+
+ pdata->is_early_init = 1;
+ pdata->is_omap16xx = 1;
+ pdata->timer_ip_type = OMAP_TIMER_IP_VERSION_1;
+
+ pdata->intr_offset = 0;
+ pdata->func_offset = 0;
+
+ ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
+ if (ret) {
+ dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
+ __func__);
+ goto err_free_pdata;
+ }
+
+ ret = platform_device_add(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
+ __func__);
+ goto err_free_pdata;
+ }
+
+ dev_dbg(&pdev->dev, " Registered.\n");
+ }
+
+ return 0;
+
+err_free_pdata:
+ kfree(pdata);
+
+err_free_pdev:
+ platform_device_unregister(pdev);
+
+ return ret;
+}
+arch_initcall(omap1_dm_timer_init);
@@ -52,7 +52,6 @@
#include <asm/irq.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
-#include <plat/dmtimer.h>
struct sys_timer omap_timer;
@@ -183,9 +182,6 @@ static __init void omap_init_32k_timer(void)
*/
static void __init omap_timer_init(void)
{
-#ifdef CONFIG_OMAP_DM_TIMER
- omap_dm_timer_init();
-#endif
omap_init_32k_timer();
}
@@ -3,6 +3,12 @@
*
* OMAP Dual-Mode Timers
*
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ * Tarun Kanti DebBarma <tarun.kanti@ti.com>
+ * Thara Gopinath <thara@ti.com>
+ *
+ * dmtimer adaptation to platform_driver.
+ *
* Copyright (C) 2005 Nokia Corporation
* OMAP2 support by Juha Yrjola
* API improvements and OMAP2 clock framework support by Timo Teras
@@ -150,39 +156,8 @@
#define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \
(_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT))
-struct omap_dm_timer {
- unsigned long phys_base;
- int irq;
-#ifdef CONFIG_ARCH_OMAP2PLUS
- struct clk *iclk, *fclk;
-#endif
- void __iomem *io_base;
- unsigned reserved:1;
- unsigned enabled:1;
- unsigned posted:1;
-};
-
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 },
@@ -549,23 +524,6 @@ 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)
{
int ret = -EINVAL;
@@ -587,8 +545,6 @@ 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)
{
@@ -738,16 +694,12 @@ 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;
spin_lock_init(&dm_timer_lock);
- 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;
@@ -56,11 +56,34 @@
*/
#define OMAP_TIMER_IP_VERSION_1 0x1
#define OMAP_TIMER_IP_VERSION_2 0x2
-struct omap_dm_timer;
+
+struct omap_dm_timer {
+ unsigned long phys_base;
+ int irq;
+ struct clk *iclk, *fclk;
+ void __iomem *io_base;
+ unsigned reserved:1;
+ unsigned enabled:1;
+ unsigned posted:1;
+ struct platform_device *pdev;
+};
+
extern struct omap_dm_timer *gptimer_wakeup;
extern struct sys_timer omap_timer;
struct clk;
+struct dmtimer_platform_data {
+ int (*set_timer_src)(struct platform_device *pdev, int source);
+ void (*dm_timer_reset)(struct omap_dm_timer *);
+ u32 (*dm_timer_read_reg)(struct omap_dm_timer *, u32);
+ void (*dm_timer_write_reg)(struct omap_dm_timer *, u32, u32);
+ int timer_ip_type;
+ u8 func_offset;
+ u8 intr_offset;
+ u32 is_early_init:1;
+ u32 is_omap16xx:1;
+};
+
int omap_dm_timer_init(void);
struct omap_dm_timer *omap_dm_timer_request(void);