This patch introduces data structures and new fields on
existing data structures to support dmtimer conversion
to platform driver and support hwmod database for the diferent
OMAP platforms.
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@xxxxxx>
Signed-off-by: Partha Basak <p-basak2@xxxxxx>
Signed-off-by: Thara Gopinath <thara@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-omap2/dmtimer.h | 25 +++++++++++++++++
arch/arm/plat-omap/dmtimer.c | 9 ++++++
arch/arm/plat-omap/include/plat/dmtimer.h | 42 +++++++++++++++++++++++++++++
3 files changed, 76 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmtimer.h
diff --git a/arch/arm/mach-omap2/dmtimer.h b/arch/arm/mach-omap2/dmtimer.h
new file mode 100644
index 0000000..3355725
--- /dev/null
+++ b/arch/arm/mach-omap2/dmtimer.h
@@ -0,0 +1,25 @@
+/**
+ * linux/arch/arm/mach-omap2/dmtimer.h
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@xxxxxx>
+ * Tarun Kanti DebBarma <tarun.kanti@xxxxxx>
+ *
+ * OMAP2 Dual-Mode Timers
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_DMTIMER_H
+#define __ASM_ARCH_DMTIMER_H
+
+/*
+ * dmtimer is required during early part of boot sequence even before
+ * device model and pm_runtime if fully up and running. this function
+ * provides hook to omap2_init_common_hw() which is triggered from
+ * start_kernel()->init_irq() of kernel initalization sequence.
+ */
+void __init omap2_dm_timer_early_init(void);
+
+#endif
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 44bafda..a7b1679 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -10,6 +10,12 @@
* Copyright (C) 2009 Texas Instruments
* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@xxxxxx>
*
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@xxxxxx>
+ * Tarun Kanti DebBarma <tarun.kanti@xxxxxx>
+ * - hwmod support
+ * - omap4 support
+ *
* 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
@@ -151,6 +157,8 @@
(_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT))
struct omap_dm_timer {
+ int id;
+ unsigned long fclk_rate;
unsigned long phys_base;
int irq;
#ifdef CONFIG_ARCH_OMAP2PLUS
@@ -160,6 +168,7 @@ struct omap_dm_timer {
unsigned reserved:1;
unsigned enabled:1;
unsigned posted:1;
+ struct platform_device *pdev;
};
static int dm_timer_count;
diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h
index 20f1054..3ec17c5 100644
--- a/arch/arm/plat-omap/include/plat/dmtimer.h
+++ b/arch/arm/plat-omap/include/plat/dmtimer.h
@@ -29,6 +29,8 @@
#ifndef __ASM_ARCH_DMTIMER_H
#define __ASM_ARCH_DMTIMER_H
+#include <linux/platform_device.h>
+
/* clock sources */
#define OMAP_TIMER_SRC_SYS_CLK 0x00
#define OMAP_TIMER_SRC_32_KHZ 0x01
@@ -44,9 +46,49 @@
#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
+/* timer ip constants */
+#define OMAP_TIMER_IP_VERSION_1 0x1 /* OMAP1/2/3 timers */
+#define OMAP_TIMER_IP_VERSION_2 0x2 /* OMAP4 timers */
+
+/*
+ * number of clock sources supported in the current platform.
+ * for the time being keeping it to 6 just to accomodate future.
+ * expansion. currently, only upto a maximum of 3 clock sources
+ * supported on OMAP4.
+ */
+#define NR_CLK_SOURCES 3
+
+
+/**
+ * omap_timer_dev_attr - timer device attribute
+ *
+ * current implementation contains array of clock source names supported
+ * by different timers. for example, in the case of OMAP4, timer[5-8]
+ * supports different set of input clock sources as compared to the rest.
+ * these array of clock names are used during timer initialization to
+ * parse through timer list and obtain their corresponding struct clk*.
+ * this is subsequently used for changing the timer input clock sources
+ * by client drivers.
+ */
+struct omap_timer_dev_attr {
+ char **clk_names;
+ u32 *reg_map;
+};
+
struct omap_dm_timer;
struct clk;
+struct dmtimer_platform_data {
+ int (*set_timer_src)
+ (struct platform_device *pdev, int source);
+#ifdef CONFIG_ARCH_OMAP2PLUS
+ struct clk *source_clocks[NR_CLK_SOURCES];
+#endif
+ u32 *reg_map;
+ int timer_ip_type;
+ bool is_early_init;
+};
+
int omap_dm_timer_init(void);
struct omap_dm_timer *omap_dm_timer_request(void);
--
1.6.0.4
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