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Merge branch 'omap-clock-fixes' into omap-fixes

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This commit is contained in:
Tony Lindgren 2009-04-24 09:56:16 -07:00
commit 535ff672e3
10 changed files with 112 additions and 34 deletions
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4
arch/arm/mach-omap1/mcbsp.c
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@ -40,8 +40,8 @@ static void omap1_mcbsp_request(unsigned int id)
*/
if (id == OMAP_MCBSP1 || id == OMAP_MCBSP3) {
if (dsp_use++ == 0) {
api_clk = clk_get(NULL, "api_clk");
dsp_clk = clk_get(NULL, "dsp_clk");
api_clk = clk_get(NULL, "api_ck");
dsp_clk = clk_get(NULL, "dsp_ck");
if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
clk_enable(api_clk);
clk_enable(dsp_clk);

4
arch/arm/mach-omap2/board-omap3beagle.c
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@ -42,6 +42,7 @@
#include <mach/nand.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/timer-gp.h>
#include "mmc-twl4030.h"
@ -186,6 +187,9 @@ static void __init omap3_beagle_init_irq(void)
{
omap2_init_common_hw(NULL);
omap_init_irq();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
omap_gpio_init();
}

19
arch/arm/mach-omap2/clock24xx.c
View File

@ -60,12 +60,13 @@ struct omap_clk {
}, \
}
#define CK_243X (1 << 0)
#define CK_242X (1 << 1)
#define CK_243X RATE_IN_243X
#define CK_242X RATE_IN_242X
static struct omap_clk omap24xx_clks[] = {
/* external root sources */
CLK(NULL, "func_32k_ck", &func_32k_ck, CK_243X | CK_242X),
CLK(NULL, "secure_32k_ck", &secure_32k_ck, CK_243X | CK_242X),
CLK(NULL, "osc_ck", &osc_ck, CK_243X | CK_242X),
CLK(NULL, "sys_ck", &sys_ck, CK_243X | CK_242X),
CLK(NULL, "alt_ck", &alt_ck, CK_243X | CK_242X),
@ -711,7 +712,7 @@ int __init omap2_clk_init(void)
{
struct prcm_config *prcm;
struct omap_clk *c;
u32 clkrate, cpu_mask;
u32 clkrate;
if (cpu_is_omap242x())
cpu_mask = RATE_IN_242X;
@ -720,20 +721,14 @@ int __init omap2_clk_init(void)
clk_init(&omap2_clk_functions);
for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
clk_init_one(c->lk.clk);
osc_ck.rate = omap2_osc_clk_recalc(&osc_ck);
propagate_rate(&osc_ck);
sys_ck.rate = omap2_sys_clk_recalc(&sys_ck);
propagate_rate(&sys_ck);
for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
clk_init_one(c->lk.clk);
cpu_mask = 0;
if (cpu_is_omap2420())
cpu_mask |= CK_242X;
if (cpu_is_omap2430())
cpu_mask |= CK_243X;
for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
if (c->cpu & cpu_mask) {
clkdev_add(&c->lk);

10
arch/arm/mach-omap2/clock24xx.h
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@ -625,6 +625,14 @@ static struct clk func_32k_ck = {
.clkdm_name = "wkup_clkdm",
};
static struct clk secure_32k_ck = {
.name = "secure_32k_ck",
.ops = &clkops_null,
.rate = 32768,
.flags = RATE_FIXED,
.clkdm_name = "wkup_clkdm",
};
/* Typical 12/13MHz in standalone mode, will be 26Mhz in chassis mode */
static struct clk osc_ck = { /* (*12, *13, 19.2, *26, 38.4)MHz */
.name = "osc_ck",
@ -1790,7 +1798,7 @@ static struct clk gpt12_ick = {
static struct clk gpt12_fck = {
.name = "gpt12_fck",
.ops = &clkops_omap2_dflt_wait,
.parent = &func_32k_ck,
.parent = &secure_32k_ck,
.clkdm_name = "core_l4_clkdm",
.enable_reg = OMAP_CM_REGADDR(CORE_MOD, CM_FCLKEN1),
.enable_bit = OMAP24XX_EN_GPT12_SHIFT,

7
arch/arm/mach-omap2/clock34xx.h
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@ -2052,7 +2052,7 @@ static struct clk dss_ick = {
static struct clk cam_mclk = {
.name = "cam_mclk",
.ops = &clkops_omap2_dflt_wait,
.ops = &clkops_omap2_dflt,
.parent = &dpll4_m5x2_ck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_CAM_SHIFT,
@ -2063,7 +2063,7 @@ static struct clk cam_mclk = {
static struct clk cam_ick = {
/* Handles both L3 and L4 clocks */
.name = "cam_ick",
.ops = &clkops_omap2_dflt_wait,
.ops = &clkops_omap2_dflt,
.parent = &l4_ick,
.init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_ICLKEN),
@ -2074,7 +2074,7 @@ static struct clk cam_ick = {
static struct clk csi2_96m_fck = {
.name = "csi2_96m_fck",
.ops = &clkops_omap2_dflt_wait,
.ops = &clkops_omap2_dflt,
.parent = &core_96m_fck,
.init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_FCLKEN),
@ -2901,7 +2901,6 @@ static struct clk sr_l4_ick = {
/* SECURE_32K_FCK clocks */
/* XXX This clock no longer exists in 3430 TRM rev F */
static struct clk gpt12_fck = {
.name = "gpt12_fck",
.ops = &clkops_null,

48
arch/arm/mach-omap2/timer-gp.c
View File

@ -3,6 +3,8 @@
*
* OMAP2 GP timer support.
*
* Copyright (C) 2009 Nokia Corporation
*
* Update to use new clocksource/clockevent layers
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
* Copyright (C) 2007 MontaVista Software, Inc.
@ -36,8 +38,13 @@
#include <asm/mach/time.h>
#include <mach/dmtimer.h>
/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */
#define MAX_GPTIMER_ID 12
static struct omap_dm_timer *gptimer;
static struct clock_event_device clockevent_gpt;
static u8 __initdata gptimer_id = 1;
static u8 __initdata inited;
static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
{
@ -95,20 +102,53 @@ static struct clock_event_device clockevent_gpt = {
.set_mode = omap2_gp_timer_set_mode,
};
/**
* omap2_gp_clockevent_set_gptimer - set which GPTIMER is used for clockevents
* @id: GPTIMER to use (1..MAX_GPTIMER_ID)
*
* Define the GPTIMER that the system should use for the tick timer.
* Meant to be called from board-*.c files in the event that GPTIMER1, the
* default, is unsuitable. Returns -EINVAL on error or 0 on success.
*/
int __init omap2_gp_clockevent_set_gptimer(u8 id)
{
if (id < 1 || id > MAX_GPTIMER_ID)
return -EINVAL;
BUG_ON(inited);
gptimer_id = id;
return 0;
}
static void __init omap2_gp_clockevent_init(void)
{
u32 tick_rate;
int src;
gptimer = omap_dm_timer_request_specific(1);
inited = 1;
gptimer = omap_dm_timer_request_specific(gptimer_id);
BUG_ON(gptimer == NULL);
#if defined(CONFIG_OMAP_32K_TIMER)
omap_dm_timer_set_source(gptimer, OMAP_TIMER_SRC_32_KHZ);
src = OMAP_TIMER_SRC_32_KHZ;
#else
omap_dm_timer_set_source(gptimer, OMAP_TIMER_SRC_SYS_CLK);
src = OMAP_TIMER_SRC_SYS_CLK;
WARN(gptimer_id == 12, "WARNING: GPTIMER12 can only use the "
"secure 32KiHz clock source\n");
#endif
if (gptimer_id != 12)
WARN(IS_ERR_VALUE(omap_dm_timer_set_source(gptimer, src)),
"timer-gp: omap_dm_timer_set_source() failed\n");
tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer));
pr_info("OMAP clockevent source: GPTIMER%d at %u Hz\n",
gptimer_id, tick_rate);
omap2_gp_timer_irq.dev_id = (void *)gptimer;
setup_irq(omap_dm_timer_get_irq(gptimer), &omap2_gp_timer_irq);
omap_dm_timer_set_int_enable(gptimer, OMAP_TIMER_INT_OVERFLOW);
@ -125,6 +165,8 @@ static void __init omap2_gp_clockevent_init(void)
clockevents_register_device(&clockevent_gpt);
}
/* Clocksource code */
#ifdef CONFIG_OMAP_32K_TIMER
/*
* When 32k-timer is enabled, don't use GPTimer for clocksource

7
arch/arm/plat-omap/clock.c
View File

@ -239,6 +239,13 @@ void recalculate_root_clocks(void)
}
}
/**
* clk_init_one - initialize any fields in the struct clk before clk init
* @clk: struct clk * to initialize
*
* Initialize any struct clk fields needed before normal clk initialization
* can run. No return value.
*/
void clk_init_one(struct clk *clk)
{
INIT_LIST_HEAD(&clk->children);

28
arch/arm/plat-omap/dmtimer.c
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@ -238,7 +238,7 @@ static struct omap_dm_timer omap3_dm_timers[] = {
{ .phys_base = 0x49040000, .irq = INT_24XX_GPTIMER9 },
{ .phys_base = 0x48086000, .irq = INT_24XX_GPTIMER10 },
{ .phys_base = 0x48088000, .irq = INT_24XX_GPTIMER11 },
{ .phys_base = 0x48304000, .irq = INT_24XX_GPTIMER12 },
{ .phys_base = 0x48304000, .irq = INT_34XX_GPT12_IRQ },
};
static const char *omap3_dm_source_names[] __initdata = {
@ -321,11 +321,9 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer)
l |= 0x2 << 8; /* Set clock activity to perserve f-clock on idle */
/*
* Enable wake-up only for GPT1 on OMAP2 CPUs.
* FIXME: All timers should have wake-up enabled and clear
* PRCM status.
* Enable wake-up on OMAP2 CPUs.
*/
if (cpu_class_is_omap2() && (timer == &dm_timers[0]))
if (cpu_class_is_omap2())
l |= 1 << 2;
omap_dm_timer_write_reg(timer, OMAP_TIMER_OCP_CFG_REG, l);
@ -511,7 +509,7 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_stop);
#ifdef CONFIG_ARCH_OMAP1
void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
{
int n = (timer - dm_timers) << 1;
u32 l;
@ -519,23 +517,31 @@ void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
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
void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
{
int ret = -EINVAL;
if (source < 0 || source >= 3)
return;
return -EINVAL;
clk_disable(timer->fclk);
clk_set_parent(timer->fclk, dm_source_clocks[source]);
ret = clk_set_parent(timer->fclk, dm_source_clocks[source]);
clk_enable(timer->fclk);
/* When the functional clock disappears, too quick writes seem to
* cause an abort. */
/*
* When the functional clock disappears, too quick writes seem
* to cause an abort. XXX Is this still necessary?
*/
__delay(150000);
return ret;
}
EXPORT_SYMBOL_GPL(omap_dm_timer_set_source);

2
arch/arm/plat-omap/include/mach/dmtimer.h
View File

@ -64,7 +64,7 @@ void omap_dm_timer_trigger(struct omap_dm_timer *timer);
void omap_dm_timer_start(struct omap_dm_timer *timer);
void omap_dm_timer_stop(struct omap_dm_timer *timer);
void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int value);
void omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload, unsigned int value);
void omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match);

17
arch/arm/plat-omap/include/mach/timer-gp.h Normal file
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@ -0,0 +1,17 @@
/*
* OMAP2/3 GPTIMER support.headers
*
* Copyright (C) 2009 Nokia Corporation
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_TIMER_GP_H
#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_TIMER_GP_H
int __init omap2_gp_clockevent_set_gptimer(u8 id);
#endif