OMAP: split plat-omap/common.c
Split plat-omap/common.c into three pieces: 1. the 32KiHz sync timer and clocksource code, which now lives in plat-omap/counter_32k.c; 2. the OMAP2+ common code, which has been moved to mach-omap2/common.c; 3. and the remainder of the OMAP-wide common code, which includes the deprecated ATAGs code and a deprecated video RAM reservation function. The primary motivation for doing this is to move the OMAP2+-specific parts into an OMAP2+-specific file, so that build breakage related to the System Control Module code can be resolved. Benoît Cousson <b-cousson@ti.com> suggested a new filename and found some bugs in the counter_32k.c comments - thanks Benoît. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com>
This commit is contained in:
parent
d13586574d
commit
aa218dafd7
|
@ -3,7 +3,8 @@
|
|||
#
|
||||
|
||||
# Common support
|
||||
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o
|
||||
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o \
|
||||
common.o
|
||||
|
||||
omap-2-3-common = irq.o sdrc.o prm2xxx_3xxx.o
|
||||
hwmod-common = omap_hwmod.o \
|
||||
|
|
|
@ -0,0 +1,135 @@
|
|||
/*
|
||||
* linux/arch/arm/mach-omap2/common.c
|
||||
*
|
||||
* Code common to all OMAP2+ machines.
|
||||
*
|
||||
* Copyright (C) 2009 Texas Instruments
|
||||
* Copyright (C) 2010 Nokia Corporation
|
||||
* Tony Lindgren <tony@atomide.com>
|
||||
* 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 version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <plat/common.h>
|
||||
#include <plat/board.h>
|
||||
#include <plat/control.h>
|
||||
#include <plat/mux.h>
|
||||
|
||||
#include <plat/clock.h>
|
||||
|
||||
#include "sdrc.h"
|
||||
|
||||
/* Global address base setup code */
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
|
||||
|
||||
static void __init __omap2_set_globals(struct omap_globals *omap2_globals)
|
||||
{
|
||||
omap2_set_globals_tap(omap2_globals);
|
||||
omap2_set_globals_sdrc(omap2_globals);
|
||||
omap2_set_globals_control(omap2_globals);
|
||||
omap2_set_globals_prcm(omap2_globals);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2420)
|
||||
|
||||
static struct omap_globals omap242x_globals = {
|
||||
.class = OMAP242X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x48014000),
|
||||
.sdrc = OMAP2420_SDRC_BASE,
|
||||
.sms = OMAP2420_SMS_BASE,
|
||||
.ctrl = OMAP242X_CTRL_BASE,
|
||||
.prm = OMAP2420_PRM_BASE,
|
||||
.cm = OMAP2420_CM_BASE,
|
||||
.uart1_phys = OMAP2_UART1_BASE,
|
||||
.uart2_phys = OMAP2_UART2_BASE,
|
||||
.uart3_phys = OMAP2_UART3_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_242x(void)
|
||||
{
|
||||
__omap2_set_globals(&omap242x_globals);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2430)
|
||||
|
||||
static struct omap_globals omap243x_globals = {
|
||||
.class = OMAP243X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x4900a000),
|
||||
.sdrc = OMAP243X_SDRC_BASE,
|
||||
.sms = OMAP243X_SMS_BASE,
|
||||
.ctrl = OMAP243X_CTRL_BASE,
|
||||
.prm = OMAP2430_PRM_BASE,
|
||||
.cm = OMAP2430_CM_BASE,
|
||||
.uart1_phys = OMAP2_UART1_BASE,
|
||||
.uart2_phys = OMAP2_UART2_BASE,
|
||||
.uart3_phys = OMAP2_UART3_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_243x(void)
|
||||
{
|
||||
__omap2_set_globals(&omap243x_globals);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP3)
|
||||
|
||||
static struct omap_globals omap3_globals = {
|
||||
.class = OMAP343X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x4830A000),
|
||||
.sdrc = OMAP343X_SDRC_BASE,
|
||||
.sms = OMAP343X_SMS_BASE,
|
||||
.ctrl = OMAP343X_CTRL_BASE,
|
||||
.prm = OMAP3430_PRM_BASE,
|
||||
.cm = OMAP3430_CM_BASE,
|
||||
.uart1_phys = OMAP3_UART1_BASE,
|
||||
.uart2_phys = OMAP3_UART2_BASE,
|
||||
.uart3_phys = OMAP3_UART3_BASE,
|
||||
.uart4_phys = OMAP3_UART4_BASE, /* Only on 3630 */
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_3xxx(void)
|
||||
{
|
||||
__omap2_set_globals(&omap3_globals);
|
||||
}
|
||||
|
||||
void __init omap3_map_io(void)
|
||||
{
|
||||
omap2_set_globals_3xxx();
|
||||
omap34xx_map_common_io();
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4)
|
||||
static struct omap_globals omap4_globals = {
|
||||
.class = OMAP443X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE),
|
||||
.ctrl = OMAP443X_SCM_BASE,
|
||||
.ctrl_pad = OMAP443X_CTRL_BASE,
|
||||
.prm = OMAP4430_PRM_BASE,
|
||||
.cm = OMAP4430_CM_BASE,
|
||||
.cm2 = OMAP4430_CM2_BASE,
|
||||
.uart1_phys = OMAP4_UART1_BASE,
|
||||
.uart2_phys = OMAP4_UART2_BASE,
|
||||
.uart3_phys = OMAP4_UART3_BASE,
|
||||
.uart4_phys = OMAP4_UART4_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_443x(void)
|
||||
{
|
||||
omap2_set_globals_tap(&omap4_globals);
|
||||
omap2_set_globals_control(&omap4_globals);
|
||||
omap2_set_globals_prcm(&omap4_globals);
|
||||
}
|
||||
#endif
|
||||
|
|
@ -4,7 +4,7 @@
|
|||
|
||||
# Common support
|
||||
obj-y := common.o sram.o clock.o devices.o dma.o mux.o gpio.o \
|
||||
usb.o fb.o io.o
|
||||
usb.o fb.o io.o counter_32k.o
|
||||
obj-m :=
|
||||
obj-n :=
|
||||
obj- :=
|
||||
|
|
|
@ -11,38 +11,15 @@
|
|||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/serial.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/serial_8250.h>
|
||||
#include <linux/serial_reg.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/omapfb.h>
|
||||
|
||||
#include <mach/hardware.h>
|
||||
#include <asm/system.h>
|
||||
#include <asm/pgtable.h>
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/setup.h>
|
||||
|
||||
#include <plat/common.h>
|
||||
#include <plat/board.h>
|
||||
#include <plat/control.h>
|
||||
#include <plat/mux.h>
|
||||
#include <plat/fpga.h>
|
||||
#include <plat/serial.h>
|
||||
#include <plat/vram.h>
|
||||
|
||||
#include <plat/clock.h>
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
|
||||
# include "../mach-omap2/sdrc.h"
|
||||
#endif
|
||||
|
||||
#define NO_LENGTH_CHECK 0xffffffff
|
||||
|
||||
|
@ -88,255 +65,3 @@ void __init omap_reserve(void)
|
|||
omapfb_reserve_sdram_memblock();
|
||||
omap_vram_reserve_sdram_memblock();
|
||||
}
|
||||
|
||||
/*
|
||||
* 32KHz clocksource ... always available, on pretty most chips except
|
||||
* OMAP 730 and 1510. Other timers could be used as clocksources, with
|
||||
* higher resolution in free-running counter modes (e.g. 12 MHz xtal),
|
||||
* but systems won't necessarily want to spend resources that way.
|
||||
*/
|
||||
|
||||
#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410
|
||||
|
||||
#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX))
|
||||
|
||||
#include <linux/clocksource.h>
|
||||
|
||||
/*
|
||||
* offset_32k holds the init time counter value. It is then subtracted
|
||||
* from every counter read to achieve a counter that counts time from the
|
||||
* kernel boot (needed for sched_clock()).
|
||||
*/
|
||||
static u32 offset_32k __read_mostly;
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP16XX
|
||||
static cycle_t omap16xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap16xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP2420
|
||||
static cycle_t omap2420_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap2420_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP2430
|
||||
static cycle_t omap2430_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap2430_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP3
|
||||
static cycle_t omap34xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap34xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP4
|
||||
static cycle_t omap44xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap44xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Kernel assumes that sched_clock can be called early but may not have
|
||||
* things ready yet.
|
||||
*/
|
||||
static cycle_t omap_32k_read_dummy(struct clocksource *cs)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct clocksource clocksource_32k = {
|
||||
.name = "32k_counter",
|
||||
.rating = 250,
|
||||
.read = omap_32k_read_dummy,
|
||||
.mask = CLOCKSOURCE_MASK(32),
|
||||
.shift = 10,
|
||||
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
|
||||
};
|
||||
|
||||
/*
|
||||
* Returns current time from boot in nsecs. It's OK for this to wrap
|
||||
* around for now, as it's just a relative time stamp.
|
||||
*/
|
||||
unsigned long long sched_clock(void)
|
||||
{
|
||||
return clocksource_cyc2ns(clocksource_32k.read(&clocksource_32k),
|
||||
clocksource_32k.mult, clocksource_32k.shift);
|
||||
}
|
||||
|
||||
/**
|
||||
* read_persistent_clock - Return time from a persistent clock.
|
||||
*
|
||||
* Reads the time from a source which isn't disabled during PM, the
|
||||
* 32k sync timer. Convert the cycles elapsed since last read into
|
||||
* nsecs and adds to a monotonically increasing timespec.
|
||||
*/
|
||||
static struct timespec persistent_ts;
|
||||
static cycles_t cycles, last_cycles;
|
||||
void read_persistent_clock(struct timespec *ts)
|
||||
{
|
||||
unsigned long long nsecs;
|
||||
cycles_t delta;
|
||||
struct timespec *tsp = &persistent_ts;
|
||||
|
||||
last_cycles = cycles;
|
||||
cycles = clocksource_32k.read(&clocksource_32k);
|
||||
delta = cycles - last_cycles;
|
||||
|
||||
nsecs = clocksource_cyc2ns(delta,
|
||||
clocksource_32k.mult, clocksource_32k.shift);
|
||||
|
||||
timespec_add_ns(tsp, nsecs);
|
||||
*ts = *tsp;
|
||||
}
|
||||
|
||||
static int __init omap_init_clocksource_32k(void)
|
||||
{
|
||||
static char err[] __initdata = KERN_ERR
|
||||
"%s: can't register clocksource!\n";
|
||||
|
||||
if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
|
||||
struct clk *sync_32k_ick;
|
||||
|
||||
if (cpu_is_omap16xx())
|
||||
clocksource_32k.read = omap16xx_32k_read;
|
||||
else if (cpu_is_omap2420())
|
||||
clocksource_32k.read = omap2420_32k_read;
|
||||
else if (cpu_is_omap2430())
|
||||
clocksource_32k.read = omap2430_32k_read;
|
||||
else if (cpu_is_omap34xx())
|
||||
clocksource_32k.read = omap34xx_32k_read;
|
||||
else if (cpu_is_omap44xx())
|
||||
clocksource_32k.read = omap44xx_32k_read;
|
||||
else
|
||||
return -ENODEV;
|
||||
|
||||
sync_32k_ick = clk_get(NULL, "omap_32ksync_ick");
|
||||
if (sync_32k_ick)
|
||||
clk_enable(sync_32k_ick);
|
||||
|
||||
clocksource_32k.mult = clocksource_hz2mult(32768,
|
||||
clocksource_32k.shift);
|
||||
|
||||
offset_32k = clocksource_32k.read(&clocksource_32k);
|
||||
|
||||
if (clocksource_register(&clocksource_32k))
|
||||
printk(err, clocksource_32k.name);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
arch_initcall(omap_init_clocksource_32k);
|
||||
|
||||
#endif /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */
|
||||
|
||||
/* Global address base setup code */
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
|
||||
|
||||
static void __init __omap2_set_globals(struct omap_globals *omap2_globals)
|
||||
{
|
||||
omap2_set_globals_tap(omap2_globals);
|
||||
omap2_set_globals_sdrc(omap2_globals);
|
||||
omap2_set_globals_control(omap2_globals);
|
||||
omap2_set_globals_prcm(omap2_globals);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2420)
|
||||
|
||||
static struct omap_globals omap242x_globals = {
|
||||
.class = OMAP242X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x48014000),
|
||||
.sdrc = OMAP2420_SDRC_BASE,
|
||||
.sms = OMAP2420_SMS_BASE,
|
||||
.ctrl = OMAP242X_CTRL_BASE,
|
||||
.prm = OMAP2420_PRM_BASE,
|
||||
.cm = OMAP2420_CM_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_242x(void)
|
||||
{
|
||||
__omap2_set_globals(&omap242x_globals);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2430)
|
||||
|
||||
static struct omap_globals omap243x_globals = {
|
||||
.class = OMAP243X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x4900a000),
|
||||
.sdrc = OMAP243X_SDRC_BASE,
|
||||
.sms = OMAP243X_SMS_BASE,
|
||||
.ctrl = OMAP243X_CTRL_BASE,
|
||||
.prm = OMAP2430_PRM_BASE,
|
||||
.cm = OMAP2430_CM_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_243x(void)
|
||||
{
|
||||
__omap2_set_globals(&omap243x_globals);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP3)
|
||||
|
||||
static struct omap_globals omap3_globals = {
|
||||
.class = OMAP343X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(0x4830A000),
|
||||
.sdrc = OMAP343X_SDRC_BASE,
|
||||
.sms = OMAP343X_SMS_BASE,
|
||||
.ctrl = OMAP343X_CTRL_BASE,
|
||||
.prm = OMAP3430_PRM_BASE,
|
||||
.cm = OMAP3430_CM_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_3xxx(void)
|
||||
{
|
||||
__omap2_set_globals(&omap3_globals);
|
||||
}
|
||||
|
||||
void __init omap3_map_io(void)
|
||||
{
|
||||
omap2_set_globals_3xxx();
|
||||
omap34xx_map_common_io();
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4)
|
||||
static struct omap_globals omap4_globals = {
|
||||
.class = OMAP443X_CLASS,
|
||||
.tap = OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE),
|
||||
.ctrl = OMAP443X_SCM_BASE,
|
||||
.ctrl_pad = OMAP443X_CTRL_BASE,
|
||||
.prm = OMAP4430_PRM_BASE,
|
||||
.cm = OMAP4430_CM_BASE,
|
||||
.cm2 = OMAP4430_CM2_BASE,
|
||||
};
|
||||
|
||||
void __init omap2_set_globals_443x(void)
|
||||
{
|
||||
omap2_set_globals_tap(&omap4_globals);
|
||||
omap2_set_globals_control(&omap4_globals);
|
||||
omap2_set_globals_prcm(&omap4_globals);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
|
@ -0,0 +1,183 @@
|
|||
/*
|
||||
* OMAP 32ksynctimer/counter_32k-related code
|
||||
*
|
||||
* Copyright (C) 2009 Texas Instruments
|
||||
* Copyright (C) 2010 Nokia Corporation
|
||||
* Tony Lindgren <tony@atomide.com>
|
||||
* 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 version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* NOTE: This timer is not the same timer as the old OMAP1 MPU timer.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <plat/common.h>
|
||||
#include <plat/board.h>
|
||||
|
||||
#include <plat/clock.h>
|
||||
|
||||
|
||||
/*
|
||||
* 32KHz clocksource ... always available, on pretty most chips except
|
||||
* OMAP 730 and 1510. Other timers could be used as clocksources, with
|
||||
* higher resolution in free-running counter modes (e.g. 12 MHz xtal),
|
||||
* but systems won't necessarily want to spend resources that way.
|
||||
*/
|
||||
|
||||
#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410
|
||||
|
||||
#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX))
|
||||
|
||||
#include <linux/clocksource.h>
|
||||
|
||||
/*
|
||||
* offset_32k holds the init time counter value. It is then subtracted
|
||||
* from every counter read to achieve a counter that counts time from the
|
||||
* kernel boot (needed for sched_clock()).
|
||||
*/
|
||||
static u32 offset_32k __read_mostly;
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP16XX
|
||||
static cycle_t omap16xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap16xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP2420
|
||||
static cycle_t omap2420_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap2420_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP2430
|
||||
static cycle_t omap2430_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap2430_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP3
|
||||
static cycle_t omap34xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap34xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP4
|
||||
static cycle_t omap44xx_32k_read(struct clocksource *cs)
|
||||
{
|
||||
return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10) - offset_32k;
|
||||
}
|
||||
#else
|
||||
#define omap44xx_32k_read NULL
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Kernel assumes that sched_clock can be called early but may not have
|
||||
* things ready yet.
|
||||
*/
|
||||
static cycle_t omap_32k_read_dummy(struct clocksource *cs)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct clocksource clocksource_32k = {
|
||||
.name = "32k_counter",
|
||||
.rating = 250,
|
||||
.read = omap_32k_read_dummy,
|
||||
.mask = CLOCKSOURCE_MASK(32),
|
||||
.shift = 10,
|
||||
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
|
||||
};
|
||||
|
||||
/*
|
||||
* Returns current time from boot in nsecs. It's OK for this to wrap
|
||||
* around for now, as it's just a relative time stamp.
|
||||
*/
|
||||
unsigned long long sched_clock(void)
|
||||
{
|
||||
return clocksource_cyc2ns(clocksource_32k.read(&clocksource_32k),
|
||||
clocksource_32k.mult, clocksource_32k.shift);
|
||||
}
|
||||
|
||||
/**
|
||||
* read_persistent_clock - Return time from a persistent clock.
|
||||
*
|
||||
* Reads the time from a source which isn't disabled during PM, the
|
||||
* 32k sync timer. Convert the cycles elapsed since last read into
|
||||
* nsecs and adds to a monotonically increasing timespec.
|
||||
*/
|
||||
static struct timespec persistent_ts;
|
||||
static cycles_t cycles, last_cycles;
|
||||
void read_persistent_clock(struct timespec *ts)
|
||||
{
|
||||
unsigned long long nsecs;
|
||||
cycles_t delta;
|
||||
struct timespec *tsp = &persistent_ts;
|
||||
|
||||
last_cycles = cycles;
|
||||
cycles = clocksource_32k.read(&clocksource_32k);
|
||||
delta = cycles - last_cycles;
|
||||
|
||||
nsecs = clocksource_cyc2ns(delta,
|
||||
clocksource_32k.mult, clocksource_32k.shift);
|
||||
|
||||
timespec_add_ns(tsp, nsecs);
|
||||
*ts = *tsp;
|
||||
}
|
||||
|
||||
static int __init omap_init_clocksource_32k(void)
|
||||
{
|
||||
static char err[] __initdata = KERN_ERR
|
||||
"%s: can't register clocksource!\n";
|
||||
|
||||
if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
|
||||
struct clk *sync_32k_ick;
|
||||
|
||||
if (cpu_is_omap16xx())
|
||||
clocksource_32k.read = omap16xx_32k_read;
|
||||
else if (cpu_is_omap2420())
|
||||
clocksource_32k.read = omap2420_32k_read;
|
||||
else if (cpu_is_omap2430())
|
||||
clocksource_32k.read = omap2430_32k_read;
|
||||
else if (cpu_is_omap34xx())
|
||||
clocksource_32k.read = omap34xx_32k_read;
|
||||
else if (cpu_is_omap44xx())
|
||||
clocksource_32k.read = omap44xx_32k_read;
|
||||
else
|
||||
return -ENODEV;
|
||||
|
||||
sync_32k_ick = clk_get(NULL, "omap_32ksync_ick");
|
||||
if (sync_32k_ick)
|
||||
clk_enable(sync_32k_ick);
|
||||
|
||||
clocksource_32k.mult = clocksource_hz2mult(32768,
|
||||
clocksource_32k.shift);
|
||||
|
||||
offset_32k = clocksource_32k.read(&clocksource_32k);
|
||||
|
||||
if (clocksource_register(&clocksource_32k))
|
||||
printk(err, clocksource_32k.name);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
arch_initcall(omap_init_clocksource_32k);
|
||||
|
||||
#endif /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */
|
||||
|
|
@ -21,7 +21,6 @@
|
|||
#include <asm/mach/map.h>
|
||||
|
||||
#include <plat/tc.h>
|
||||
#include <plat/control.h>
|
||||
#include <plat/board.h>
|
||||
#include <plat/mmc.h>
|
||||
#include <mach/gpio.h>
|
||||
|
|
|
@ -31,10 +31,8 @@
|
|||
#include <plat/cpu.h>
|
||||
#include <plat/vram.h>
|
||||
|
||||
#include <plat/control.h>
|
||||
#include "sram.h"
|
||||
#include "fb.h"
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
|
||||
# include "../mach-omap2/prm.h"
|
||||
# include "../mach-omap2/cm.h"
|
||||
|
@ -71,7 +69,6 @@
|
|||
#define OMAP34XX_VA_WRITEPERM0 OMAP2_L3_IO_ADDRESS(0x68012858)
|
||||
#define OMAP34XX_VA_ADDR_MATCH2 OMAP2_L3_IO_ADDRESS(0x68012880)
|
||||
#define OMAP34XX_VA_SMS_RG_ATT0 OMAP2_L3_IO_ADDRESS(0x6C000048)
|
||||
#define OMAP34XX_VA_CONTROL_STAT OMAP2_L4_IO_ADDRESS(0x480022F0)
|
||||
|
||||
#define GP_DEVICE 0x300
|
||||
|
||||
|
|
Loading…
Reference in New Issue