Skip to content

L
linux
Commit aa218daf authored by Paul Walmsley's avatar Paul Walmsley
Browse files
Options

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: default avatarPaul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
parent d1358657
Show whitespace changes
Inline Side-by-side
Showing with 321 additions and 281 deletions
arch/arm/mach-omap2/Makefile
View file @ aa218daf
......@@ -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 \
......
arch/arm/mach-omap2/common.c 0 → 100644
View file @ aa218daf
/*
* 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
arch/arm/plat-omap/Makefile
View file @ aa218daf
......@@ -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- :=
......
arch/arm/plat-omap/common.c
View file @ aa218daf
......@@ -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
arch/arm/plat-omap/counter_32k.c 0 → 100644
View file @ aa218daf
/*
* 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)) */
arch/arm/plat-omap/devices.c
View file @ aa218daf
......@@ -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>
......
arch/arm/plat-omap/sram.c
View file @ aa218daf
......@@ -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
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7