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ARM: OMAP2+: dmtimer: convert to platform devices 

Add routines to converts dmtimers to platform devices. The device data
is obtained from hwmod database of respective platform and is registered
to device model after successful binding to driver.
In addition, capability attribute of each of the timers is added in
hwmod database.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: Thara Gopinath <thara@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Cousson, Benoit <b-cousson@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tarun Kanti DebBarma 2011-09-20 17:00:18 +05:30 committed by Tony Lindgren
parent 97933d6ced
commit c345c8b09d
6 changed files with 240 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
arch/arm/mach-omap2/omap_hwmod_2420_data.c
View File

@ -269,6 +269,16 @@ static struct omap_hwmod omap2420_iva_hwmod = {
.masters_cnt = ARRAY_SIZE(omap2420_iva_masters),
};
/* always-on timers dev attribute */
static struct omap_timer_capability_dev_attr capability_alwon_dev_attr = {
.timer_capability = OMAP_TIMER_ALWON,
};
/* pwm timers dev attribute */
static struct omap_timer_capability_dev_attr capability_pwm_dev_attr = {
.timer_capability = OMAP_TIMER_HAS_PWM,
};
/* timer1 */
static struct omap_hwmod omap2420_timer1_hwmod;
@ -309,6 +319,7 @@ static struct omap_hwmod omap2420_timer1_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT1_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer1_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer1_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -345,6 +356,7 @@ static struct omap_hwmod omap2420_timer2_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT2_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer2_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer2_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -381,6 +393,7 @@ static struct omap_hwmod omap2420_timer3_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT3_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer3_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer3_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -417,6 +430,7 @@ static struct omap_hwmod omap2420_timer4_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT4_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer4_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer4_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -453,6 +467,7 @@ static struct omap_hwmod omap2420_timer5_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT5_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer5_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer5_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -490,6 +505,7 @@ static struct omap_hwmod omap2420_timer6_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT6_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer6_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer6_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -526,6 +542,7 @@ static struct omap_hwmod omap2420_timer7_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT7_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer7_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer7_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -562,6 +579,7 @@ static struct omap_hwmod omap2420_timer8_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT8_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2420_timer8_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer8_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -598,6 +616,7 @@ static struct omap_hwmod omap2420_timer9_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT9_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2420_timer9_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer9_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -634,6 +653,7 @@ static struct omap_hwmod omap2420_timer10_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT10_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2420_timer10_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer10_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -670,6 +690,7 @@ static struct omap_hwmod omap2420_timer11_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT11_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2420_timer11_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer11_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -706,6 +727,7 @@ static struct omap_hwmod omap2420_timer12_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT12_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2420_timer12_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_timer12_slaves),
.class = &omap2xxx_timer_hwmod_class,

22
arch/arm/mach-omap2/omap_hwmod_2430_data.c
View File

@ -343,6 +343,16 @@ static struct omap_hwmod omap2430_iva_hwmod = {
.masters_cnt = ARRAY_SIZE(omap2430_iva_masters),
};
/* always-on timers dev attribute */
static struct omap_timer_capability_dev_attr capability_alwon_dev_attr = {
.timer_capability = OMAP_TIMER_ALWON,
};
/* pwm timers dev attribute */
static struct omap_timer_capability_dev_attr capability_pwm_dev_attr = {
.timer_capability = OMAP_TIMER_HAS_PWM,
};
/* timer1 */
static struct omap_hwmod omap2430_timer1_hwmod;
@ -383,6 +393,7 @@ static struct omap_hwmod omap2430_timer1_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT1_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer1_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer1_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -419,6 +430,7 @@ static struct omap_hwmod omap2430_timer2_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT2_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer2_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer2_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -455,6 +467,7 @@ static struct omap_hwmod omap2430_timer3_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT3_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer3_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer3_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -491,6 +504,7 @@ static struct omap_hwmod omap2430_timer4_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT4_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer4_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer4_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -527,6 +541,7 @@ static struct omap_hwmod omap2430_timer5_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT5_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer5_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer5_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -563,6 +578,7 @@ static struct omap_hwmod omap2430_timer6_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT6_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer6_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer6_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -599,6 +615,7 @@ static struct omap_hwmod omap2430_timer7_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT7_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer7_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer7_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -635,6 +652,7 @@ static struct omap_hwmod omap2430_timer8_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT8_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap2430_timer8_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer8_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -671,6 +689,7 @@ static struct omap_hwmod omap2430_timer9_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT9_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2430_timer9_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer9_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -707,6 +726,7 @@ static struct omap_hwmod omap2430_timer10_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT10_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2430_timer10_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer10_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -743,6 +763,7 @@ static struct omap_hwmod omap2430_timer11_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT11_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2430_timer11_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer11_slaves),
.class = &omap2xxx_timer_hwmod_class,
@ -779,6 +800,7 @@ static struct omap_hwmod omap2430_timer12_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT12_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap2430_timer12_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_timer12_slaves),
.class = &omap2xxx_timer_hwmod_class,

27
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -564,6 +564,21 @@ static struct omap_hwmod_class omap3xxx_timer_hwmod_class = {
.rev = OMAP_TIMER_IP_VERSION_1,
};
/* secure timers dev attribute */
static struct omap_timer_capability_dev_attr capability_secure_dev_attr = {
.timer_capability = OMAP_TIMER_SECURE,
};
/* always-on timers dev attribute */
static struct omap_timer_capability_dev_attr capability_alwon_dev_attr = {
.timer_capability = OMAP_TIMER_ALWON,
};
/* pwm timers dev attribute */
static struct omap_timer_capability_dev_attr capability_pwm_dev_attr = {
.timer_capability = OMAP_TIMER_HAS_PWM,
};
/* timer1 */
static struct omap_hwmod omap3xxx_timer1_hwmod;
@ -604,6 +619,7 @@ static struct omap_hwmod omap3xxx_timer1_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT1_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer1_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer1_slaves),
.class = &omap3xxx_timer_1ms_hwmod_class,
@ -649,6 +665,7 @@ static struct omap_hwmod omap3xxx_timer2_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT2_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer2_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer2_slaves),
.class = &omap3xxx_timer_1ms_hwmod_class,
@ -694,6 +711,7 @@ static struct omap_hwmod omap3xxx_timer3_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT3_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer3_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer3_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -739,6 +757,7 @@ static struct omap_hwmod omap3xxx_timer4_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT4_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer4_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer4_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -784,6 +803,7 @@ static struct omap_hwmod omap3xxx_timer5_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT5_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer5_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer5_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -829,6 +849,7 @@ static struct omap_hwmod omap3xxx_timer6_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT6_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer6_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer6_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -874,6 +895,7 @@ static struct omap_hwmod omap3xxx_timer7_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT7_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap3xxx_timer7_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer7_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -919,6 +941,7 @@ static struct omap_hwmod omap3xxx_timer8_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT8_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap3xxx_timer8_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer8_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -964,6 +987,7 @@ static struct omap_hwmod omap3xxx_timer9_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT9_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap3xxx_timer9_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer9_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -1000,6 +1024,7 @@ static struct omap_hwmod omap3xxx_timer10_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT10_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap3xxx_timer10_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer10_slaves),
.class = &omap3xxx_timer_1ms_hwmod_class,
@ -1036,6 +1061,7 @@ static struct omap_hwmod omap3xxx_timer11_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT11_SHIFT,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap3xxx_timer11_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer11_slaves),
.class = &omap3xxx_timer_hwmod_class,
@ -1085,6 +1111,7 @@ static struct omap_hwmod omap3xxx_timer12_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT12_SHIFT,
},
},
.dev_attr = &capability_secure_dev_attr,
.slaves = omap3xxx_timer12_slaves,
.slaves_cnt = ARRAY_SIZE(omap3xxx_timer12_slaves),
.class = &omap3xxx_timer_hwmod_class,

22
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -29,6 +29,7 @@
#include <plat/mcbsp.h>
#include <plat/mmc.h>
#include <plat/i2c.h>
#include <plat/dmtimer.h>
#include "omap_hwmod_common_data.h"
@ -4201,6 +4202,16 @@ static struct omap_hwmod_class omap44xx_timer_hwmod_class = {
.sysc = &omap44xx_timer_sysc,
};
/* always-on timers dev attribute */
static struct omap_timer_capability_dev_attr capability_alwon_dev_attr = {
.timer_capability = OMAP_TIMER_ALWON,
};
/* pwm timers dev attribute */
static struct omap_timer_capability_dev_attr capability_pwm_dev_attr = {
.timer_capability = OMAP_TIMER_HAS_PWM,
};
/* timer1 */
static struct omap_hwmod omap44xx_timer1_hwmod;
static struct omap_hwmod_irq_info omap44xx_timer1_irqs[] = {
@ -4244,6 +4255,7 @@ static struct omap_hwmod omap44xx_timer1_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer1_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer1_slaves),
};
@ -4291,6 +4303,7 @@ static struct omap_hwmod omap44xx_timer2_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer2_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer2_slaves),
};
@ -4338,6 +4351,7 @@ static struct omap_hwmod omap44xx_timer3_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer3_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer3_slaves),
};
@ -4385,6 +4399,7 @@ static struct omap_hwmod omap44xx_timer4_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer4_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer4_slaves),
};
@ -4451,6 +4466,7 @@ static struct omap_hwmod omap44xx_timer5_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer5_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer5_slaves),
};
@ -4518,6 +4534,7 @@ static struct omap_hwmod omap44xx_timer6_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer6_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer6_slaves),
};
@ -4584,6 +4601,7 @@ static struct omap_hwmod omap44xx_timer7_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
.slaves = omap44xx_timer7_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer7_slaves),
};
@ -4650,6 +4668,7 @@ static struct omap_hwmod omap44xx_timer8_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap44xx_timer8_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer8_slaves),
};
@ -4697,6 +4716,7 @@ static struct omap_hwmod omap44xx_timer9_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap44xx_timer9_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer9_slaves),
};
@ -4744,6 +4764,7 @@ static struct omap_hwmod omap44xx_timer10_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap44xx_timer10_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer10_slaves),
};
@ -4791,6 +4812,7 @@ static struct omap_hwmod omap44xx_timer11_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_pwm_dev_attr,
.slaves = omap44xx_timer11_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_timer11_slaves),
};

136
arch/arm/mach-omap2/timer.c
View File

@ -35,6 +35,7 @@
#include <linux/irq.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
#include <linux/slab.h>
#include <asm/mach/time.h>
#include <plat/dmtimer.h>
@ -42,6 +43,7 @@
#include <asm/sched_clock.h>
#include <plat/common.h>
#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
/* Parent clocks, eventually these will come from the clock framework */
@ -342,3 +344,137 @@ static void __init omap4_timer_init(void)
}
OMAP_SYS_TIMER(4)
#endif
/**
* omap2_dm_timer_set_src - change the timer input clock source
* @pdev: timer platform device pointer
* @source: array index of parent clock source
*/
static int omap2_dm_timer_set_src(struct platform_device *pdev, int source)
{
int ret;
struct dmtimer_platform_data *pdata = pdev->dev.platform_data;
struct clk *fclk, *parent;
char *parent_name = NULL;
fclk = clk_get(&pdev->dev, "fck");
if (IS_ERR_OR_NULL(fclk)) {
dev_err(&pdev->dev, "%s: %d: clk_get() FAILED\n",
__func__, __LINE__);
return -EINVAL;
}
switch (source) {
case OMAP_TIMER_SRC_SYS_CLK:
parent_name = "sys_ck";
break;
case OMAP_TIMER_SRC_32_KHZ:
parent_name = "32k_ck";
break;
case OMAP_TIMER_SRC_EXT_CLK:
if (pdata->timer_ip_version == OMAP_TIMER_IP_VERSION_1) {
parent_name = "alt_ck";
break;
}
dev_err(&pdev->dev, "%s: %d: invalid clk src.\n",
__func__, __LINE__);
clk_put(fclk);
return -EINVAL;
}
parent = clk_get(&pdev->dev, parent_name);
if (IS_ERR_OR_NULL(parent)) {
dev_err(&pdev->dev, "%s: %d: clk_get() %s FAILED\n",
__func__, __LINE__, parent_name);
clk_put(fclk);
return -EINVAL;
}
ret = clk_set_parent(fclk, parent);
if (IS_ERR_VALUE(ret)) {
dev_err(&pdev->dev, "%s: clk_set_parent() to %s FAILED\n",
__func__, parent_name);
ret = -EINVAL;
}
clk_put(parent);
clk_put(fclk);
return ret;
}
struct omap_device_pm_latency omap2_dmtimer_latency[] = {
{
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
/**
* omap_timer_init - build and register timer device with an
* associated timer hwmod
* @oh: timer hwmod pointer to be used to build timer device
* @user: parameter that can be passed from calling hwmod API
*
* Called by omap_hwmod_for_each_by_class to register each of the timer
* devices present in the system. The number of timer devices is known
* by parsing through the hwmod database for a given class name. At the
* end of function call memory is allocated for timer device and it is
* registered to the framework ready to be proved by the driver.
*/
static int __init omap_timer_init(struct omap_hwmod *oh, void *unused)
{
int id;
int ret = 0;
char *name = "omap_timer";
struct dmtimer_platform_data *pdata;
struct omap_device *od;
struct omap_timer_capability_dev_attr *timer_dev_attr;
pr_debug("%s: %s\n", __func__, oh->name);
/* on secure device, do not register secure timer */
timer_dev_attr = oh->dev_attr;
if (omap_type() != OMAP2_DEVICE_TYPE_GP && timer_dev_attr)
if (timer_dev_attr->timer_capability == OMAP_TIMER_SECURE)
return ret;
pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
pr_err("%s: No memory for [%s]\n", __func__, oh->name);
return -ENOMEM;
}
/*
* Extract the IDs from name field in hwmod database
* and use the same for constructing ids' for the
* timer devices. In a way, we are avoiding usage of
* static variable witin the function to do the same.
* CAUTION: We have to be careful and make sure the
* name in hwmod database does not change in which case
* we might either make corresponding change here or
* switch back static variable mechanism.
*/
sscanf(oh->name, "timer%2d", &id);
pdata->set_timer_src = omap2_dm_timer_set_src;
pdata->timer_ip_version = oh->class->rev;
od = omap_device_build(name, id, oh, pdata, sizeof(*pdata),
omap2_dmtimer_latency,
ARRAY_SIZE(omap2_dmtimer_latency),
0);
if (IS_ERR(od)) {
pr_err("%s: Can't build omap_device for %s: %s.\n",
__func__, name, oh->name);
ret = -EINVAL;
}
kfree(pdata);
return ret;
}

12
arch/arm/plat-omap/include/plat/dmtimer.h
View File

@ -1,5 +1,5 @@
/*
* arch/arm/plat-omap/include/mach/dmtimer.h
* arch/arm/plat-omap/include/plat/dmtimer.h
*
* OMAP Dual-Mode Timers
*
@ -60,6 +60,16 @@
* in OMAP4 can be distinguished.
*/
#define OMAP_TIMER_IP_VERSION_1 0x1
/* timer capabilities used in hwmod database */
#define OMAP_TIMER_SECURE 0x80000000
#define OMAP_TIMER_ALWON 0x40000000
#define OMAP_TIMER_HAS_PWM 0x20000000
struct omap_timer_capability_dev_attr {
u32 timer_capability;
};
struct omap_dm_timer;
struct clk;