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Here are some omap dmtimer changes to make it easier to add

Browse Source 
device tree support for dmtimer by simplifying the platform
 data structure used by dmtimr.
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Merge tag 'omap-devel-dmtimer-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/timer

From Tony Lindgren <tony@atomide.com>:

Here are some omap dmtimer changes to make it easier to add
device tree support for dmtimer by simplifying the platform
data structure used by dmtimr.

* tag 'omap-devel-dmtimer-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Simplify dmtimer clock aliases
  ARM: OMAP2+: Move dmtimer clock set function to dmtimer driver
  ARM: OMAP1: Fix dmtimer support
  ARM: OMAP: Add flag to indicate if a timer needs a manual reset
  ARM: OMAP: Remove timer function pointer for context loss counter
  ARM: OMAP: Remove loses_context variable from timer platform data
  ARM: OMAP2+: Fix external clock support for dmtimers
  ARM: OMAP2+: HWMOD: Correct timer device attributes
  ARM: OMAP: Add DMTIMER capability variable to represent timer features
  ARM: OMAP2+: Add dmtimer platform function to reserve systimers
  ARM: OMAP2+: Remove unused max number of timers definition
  ARM: OMAP: Remove unnecessary clk structure

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2012-07-03 21:56:23 +02:00
commit 5351da96bd
11 changed files with 118 additions and 262 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/mach-omap1/timer.c
View File

@ -140,7 +140,8 @@ static int __init omap1_dm_timer_init(void)
}
pdata->set_timer_src = omap1_dm_timer_set_src;
pdata->needs_manual_reset = 1;
pdata->timer_capability = OMAP_TIMER_ALWON |
OMAP_TIMER_NEEDS_RESET;
ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
if (ret) {

39
arch/arm/mach-omap2/clock2420_data.c
View File

@ -1901,42 +1901,9 @@ static struct omap_clk omap2420_clks[] = {
CLK(NULL, "pka_ick", &pka_ick, CK_242X),
CLK(NULL, "usb_fck", &usb_fck, CK_242X),
CLK("musb-hdrc", "fck", &osc_ck, CK_242X),
CLK("omap_timer.1", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.2", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.3", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.4", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.5", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.6", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.7", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.8", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.9", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.10", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.11", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.12", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.1", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.2", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.3", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.4", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.5", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.6", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.7", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.8", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.9", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.10", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.11", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.12", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.1", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.2", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.3", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.4", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.5", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.6", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.7", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.8", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.9", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.10", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.11", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.12", "alt_ck", &alt_ck, CK_243X),
CLK(NULL, "timer_32k_ck", &func_32k_ck, CK_243X),
CLK(NULL, "timer_sys_ck", &sys_ck, CK_243X),
CLK(NULL, "timer_ext_ck", &alt_ck, CK_243X),
};
/*

39
arch/arm/mach-omap2/clock2430_data.c
View File

@ -2000,42 +2000,9 @@ static struct omap_clk omap2430_clks[] = {
CLK(NULL, "mdm_intc_ick", &mdm_intc_ick, CK_243X),
CLK("omap_hsmmc.0", "mmchsdb_fck", &mmchsdb1_fck, CK_243X),
CLK("omap_hsmmc.1", "mmchsdb_fck", &mmchsdb2_fck, CK_243X),
CLK("omap_timer.1", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.2", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.3", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.4", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.5", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.6", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.7", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.8", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.9", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.10", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.11", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.12", "32k_ck", &func_32k_ck, CK_243X),
CLK("omap_timer.1", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.2", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.3", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.4", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.5", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.6", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.7", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.8", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.9", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.10", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.11", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.12", "sys_ck", &sys_ck, CK_243X),
CLK("omap_timer.1", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.2", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.3", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.4", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.5", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.6", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.7", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.8", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.9", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.10", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.11", "alt_ck", &alt_ck, CK_243X),
CLK("omap_timer.12", "alt_ck", &alt_ck, CK_243X),
CLK(NULL, "timer_32k_ck", &func_32k_ck, CK_243X),
CLK(NULL, "timer_sys_ck", &sys_ck, CK_243X),
CLK(NULL, "timer_ext_ck", &alt_ck, CK_243X),
};
/*

26
arch/arm/mach-omap2/clock3xxx_data.c
View File

@ -3482,30 +3482,8 @@ static struct omap_clk omap3xxx_clks[] = {
CLK("musb-am35x", "fck", &hsotgusb_fck_am35xx, CK_AM35XX),
CLK(NULL, "hecc_ck", &hecc_ck, CK_AM35XX),
CLK(NULL, "uart4_ick", &uart4_ick_am35xx, CK_AM35XX),
CLK("omap_timer.1", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.2", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.3", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.4", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.5", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.6", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.7", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.8", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.9", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.10", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.11", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.12", "32k_ck", &omap_32k_fck, CK_3XXX),
CLK("omap_timer.1", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.2", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.3", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.4", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.5", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.6", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.7", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.8", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.9", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.10", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.11", "sys_ck", &sys_ck, CK_3XXX),
CLK("omap_timer.12", "sys_ck", &sys_ck, CK_3XXX),
CLK(NULL, "timer_32k_ck", &omap_32k_fck, CK_3XXX),
CLK(NULL, "timer_sys_ck", &sys_ck, CK_3XXX),
};

34
arch/arm/mach-omap2/clock44xx_data.c
View File

@ -3385,28 +3385,18 @@ static struct omap_clk omap44xx_clks[] = {
CLK("usbhs_omap", "usbhost_ick", &dummy_ck, CK_443X),
CLK("usbhs_omap", "usbtll_fck", &dummy_ck, CK_443X),
CLK("omap_wdt", "ick", &dummy_ck, CK_443X),
CLK("omap_timer.1", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.2", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.3", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.4", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.5", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.6", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.7", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.8", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.9", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.10", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.11", "32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.1", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.2", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.3", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.4", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.9", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.10", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.11", "sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.5", "sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.6", "sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.7", "sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.8", "sys_ck", &syc_clk_div_ck, CK_443X),
CLK(NULL, "timer_32k_ck", &sys_32k_ck, CK_443X),
CLK("omap_timer.1", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.2", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.3", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.4", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.9", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.10", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.11", "timer_sys_ck", &sys_clkin_ck, CK_443X),
CLK("omap_timer.5", "timer_sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.6", "timer_sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.7", "timer_sys_ck", &syc_clk_div_ck, CK_443X),
CLK("omap_timer.8", "timer_sys_ck", &syc_clk_div_ck, CK_443X),
};
int __init omap4xxx_clk_init(void)

8
arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
View File

@ -68,7 +68,6 @@ static struct omap_hwmod_class_sysconfig omap2xxx_timer_sysc = {
struct omap_hwmod_class omap2xxx_timer_hwmod_class = {
.name = "timer",
.sysc = &omap2xxx_timer_sysc,
.rev = OMAP_TIMER_IP_VERSION_1,
};
/*
@ -257,7 +256,6 @@ struct omap_hwmod omap2xxx_timer2_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT2_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -276,7 +274,6 @@ struct omap_hwmod omap2xxx_timer3_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT3_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -295,7 +292,6 @@ struct omap_hwmod omap2xxx_timer4_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT4_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -314,7 +310,6 @@ struct omap_hwmod omap2xxx_timer5_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT5_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -333,7 +328,6 @@ struct omap_hwmod omap2xxx_timer6_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT6_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -352,7 +346,6 @@ struct omap_hwmod omap2xxx_timer7_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT7_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};
@ -371,7 +364,6 @@ struct omap_hwmod omap2xxx_timer8_hwmod = {
.idlest_idle_bit = OMAP24XX_ST_GPT8_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
};

10
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -129,7 +129,6 @@ static struct omap_hwmod_class_sysconfig omap3xxx_timer_1ms_sysc = {
static struct omap_hwmod_class omap3xxx_timer_1ms_hwmod_class = {
.name = "timer",
.sysc = &omap3xxx_timer_1ms_sysc,
.rev = OMAP_TIMER_IP_VERSION_1,
};
static struct omap_hwmod_class_sysconfig omap3xxx_timer_sysc = {
@ -145,12 +144,11 @@ static struct omap_hwmod_class_sysconfig omap3xxx_timer_sysc = {
static struct omap_hwmod_class omap3xxx_timer_hwmod_class = {
.name = "timer",
.sysc = &omap3xxx_timer_sysc,
.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,
.timer_capability = OMAP_TIMER_ALWON | OMAP_TIMER_SECURE,
};
/* always-on timers dev attribute */
@ -195,7 +193,6 @@ static struct omap_hwmod omap3xxx_timer2_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT2_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_1ms_hwmod_class,
};
@ -213,7 +210,6 @@ static struct omap_hwmod omap3xxx_timer3_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT3_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
};
@ -231,7 +227,6 @@ static struct omap_hwmod omap3xxx_timer4_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT4_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
};
@ -249,7 +244,6 @@ static struct omap_hwmod omap3xxx_timer5_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT5_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
};
@ -267,7 +261,6 @@ static struct omap_hwmod omap3xxx_timer6_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT6_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
};
@ -285,7 +278,6 @@ static struct omap_hwmod omap3xxx_timer7_hwmod = {
.idlest_idle_bit = OMAP3430_ST_GPT7_SHIFT,
},
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
};

6
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -2947,7 +2947,6 @@ static struct omap_hwmod omap44xx_timer2_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer3 */
@ -2969,7 +2968,6 @@ static struct omap_hwmod omap44xx_timer3_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer4 */
@ -2991,7 +2989,6 @@ static struct omap_hwmod omap44xx_timer4_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer5 */
@ -3013,7 +3010,6 @@ static struct omap_hwmod omap44xx_timer5_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer6 */
@ -3036,7 +3032,6 @@ static struct omap_hwmod omap44xx_timer6_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer7 */
@ -3058,7 +3053,6 @@ static struct omap_hwmod omap44xx_timer7_hwmod = {
.modulemode = MODULEMODE_SWCTRL,
},
},
.dev_attr = &capability_alwon_dev_attr,
};
/* timer8 */

82
arch/arm/mach-omap2/timer.c
View File

@ -69,11 +69,6 @@
#define OMAP3_SECURE_TIMER 1
#endif
/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */
#define MAX_GPTIMER_ID 12
static u32 sys_timer_reserved;
/* Clockevent code */
static struct omap_dm_timer clkev;
@ -180,7 +175,8 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
omap_hwmod_enable(oh);
sys_timer_reserved |= (1 << (gptimer_id - 1));
if (omap_dm_timer_reserve_systimer(gptimer_id))
return -ENODEV;
if (gptimer_id != 12) {
struct clk *src;
@ -393,66 +389,6 @@ 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;
}
/**
* omap_timer_init - build and register timer device with an
* associated timer hwmod
@ -473,7 +409,6 @@ static int __init omap_timer_init(struct omap_hwmod *oh, void *unused)
struct dmtimer_platform_data *pdata;
struct platform_device *pdev;
struct omap_timer_capability_dev_attr *timer_dev_attr;
struct powerdomain *pwrdm;
pr_debug("%s: %s\n", __func__, oh->name);
@ -501,18 +436,9 @@ static int __init omap_timer_init(struct omap_hwmod *oh, void *unused)
*/
sscanf(oh->name, "timer%2d", &id);
pdata->set_timer_src = omap2_dm_timer_set_src;
pdata->timer_ip_version = oh->class->rev;
if (timer_dev_attr)
pdata->timer_capability = timer_dev_attr->timer_capability;
/* Mark clocksource and clockevent timers as reserved */
if ((sys_timer_reserved >> (id - 1)) & 0x1)
pdata->reserved = 1;
pwrdm = omap_hwmod_get_pwrdm(oh);
pdata->loses_context = pwrdm_can_ever_lose_context(pwrdm);
#ifdef CONFIG_PM
pdata->get_context_loss_count = omap_pm_get_dev_context_loss_count;
#endif
pdev = omap_device_build(name, id, oh, pdata, sizeof(*pdata),
NULL, 0, 0);

111
arch/arm/plat-omap/dmtimer.c
View File

@ -42,9 +42,11 @@
#include <linux/pm_runtime.h>
#include <plat/dmtimer.h>
#include <plat/omap-pm.h>
#include <mach/hardware.h>
static u32 omap_reserved_systimers;
static LIST_HEAD(omap_timer_list);
static DEFINE_SPINLOCK(dm_timer_lock);
@ -133,17 +135,22 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer)
int omap_dm_timer_prepare(struct omap_dm_timer *timer)
{
struct dmtimer_platform_data *pdata = timer->pdev->dev.platform_data;
int ret;
timer->fclk = clk_get(&timer->pdev->dev, "fck");
if (WARN_ON_ONCE(IS_ERR_OR_NULL(timer->fclk))) {
timer->fclk = NULL;
dev_err(&timer->pdev->dev, ": No fclk handle.\n");
return -EINVAL;
/*
* FIXME: OMAP1 devices do not use the clock framework for dmtimers so
* do not call clk_get() for these devices.
*/
if (!(timer->capability & OMAP_TIMER_NEEDS_RESET)) {
timer->fclk = clk_get(&timer->pdev->dev, "fck");
if (WARN_ON_ONCE(IS_ERR_OR_NULL(timer->fclk))) {
timer->fclk = NULL;
dev_err(&timer->pdev->dev, ": No fclk handle.\n");
return -EINVAL;
}
}
if (pdata->needs_manual_reset)
if (timer->capability & OMAP_TIMER_NEEDS_RESET)
omap_dm_timer_reset(timer);
ret = omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ);
@ -152,6 +159,21 @@ int omap_dm_timer_prepare(struct omap_dm_timer *timer)
return ret;
}
static inline u32 omap_dm_timer_reserved_systimer(int id)
{
return (omap_reserved_systimers & (1 << (id - 1))) ? 1 : 0;
}
int omap_dm_timer_reserve_systimer(int id)
{
if (omap_dm_timer_reserved_systimer(id))
return -ENODEV;
omap_reserved_systimers |= (1 << (id - 1));
return 0;
}
struct omap_dm_timer *omap_dm_timer_request(void)
{
struct omap_dm_timer *timer = NULL, *t;
@ -325,10 +347,9 @@ int omap_dm_timer_start(struct omap_dm_timer *timer)
omap_dm_timer_enable(timer);
if (timer->loses_context) {
u32 ctx_loss_cnt_after =
timer->get_context_loss_count(&timer->pdev->dev);
if (ctx_loss_cnt_after != timer->ctx_loss_count)
if (!(timer->capability & OMAP_TIMER_ALWON)) {
if (omap_pm_get_dev_context_loss_count(&timer->pdev->dev) !=
timer->ctx_loss_count)
omap_timer_restore_context(timer);
}
@ -347,20 +368,18 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_start);
int omap_dm_timer_stop(struct omap_dm_timer *timer)
{
unsigned long rate = 0;
struct dmtimer_platform_data *pdata;
if (unlikely(!timer))
return -EINVAL;
pdata = timer->pdev->dev.platform_data;
if (!pdata->needs_manual_reset)
if (!(timer->capability & OMAP_TIMER_NEEDS_RESET))
rate = clk_get_rate(timer->fclk);
__omap_dm_timer_stop(timer, timer->posted, rate);
if (timer->loses_context && timer->get_context_loss_count)
if (!(timer->capability & OMAP_TIMER_ALWON))
timer->ctx_loss_count =
timer->get_context_loss_count(&timer->pdev->dev);
omap_pm_get_dev_context_loss_count(&timer->pdev->dev);
/*
* Since the register values are computed and written within
@ -378,6 +397,8 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_stop);
int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
{
int ret;
char *parent_name = NULL;
struct clk *fclk, *parent;
struct dmtimer_platform_data *pdata;
if (unlikely(!timer))
@ -388,7 +409,49 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
if (source < 0 || source >= 3)
return -EINVAL;
ret = pdata->set_timer_src(timer->pdev, source);
/*
* FIXME: Used for OMAP1 devices only because they do not currently
* use the clock framework to set the parent clock. To be removed
* once OMAP1 migrated to using clock framework for dmtimers
*/
if (pdata->set_timer_src)
return pdata->set_timer_src(timer->pdev, source);
fclk = clk_get(&timer->pdev->dev, "fck");
if (IS_ERR_OR_NULL(fclk)) {
pr_err("%s: fck not found\n", __func__);
return -EINVAL;
}
switch (source) {
case OMAP_TIMER_SRC_SYS_CLK:
parent_name = "timer_sys_ck";
break;
case OMAP_TIMER_SRC_32_KHZ:
parent_name = "timer_32k_ck";
break;
case OMAP_TIMER_SRC_EXT_CLK:
parent_name = "timer_ext_ck";
break;
}
parent = clk_get(&timer->pdev->dev, parent_name);
if (IS_ERR_OR_NULL(parent)) {
pr_err("%s: %s not found\n", __func__, parent_name);
ret = -EINVAL;
goto out;
}
ret = clk_set_parent(fclk, parent);
if (IS_ERR_VALUE(ret))
pr_err("%s: failed to set %s as parent\n", __func__,
parent_name);
clk_put(parent);
out:
clk_put(fclk);
return ret;
}
@ -431,10 +494,9 @@ int omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload,
omap_dm_timer_enable(timer);
if (timer->loses_context) {
u32 ctx_loss_cnt_after =
timer->get_context_loss_count(&timer->pdev->dev);
if (ctx_loss_cnt_after != timer->ctx_loss_count)
if (!(timer->capability & OMAP_TIMER_ALWON)) {
if (omap_pm_get_dev_context_loss_count(&timer->pdev->dev) !=
timer->ctx_loss_count)
omap_timer_restore_context(timer);
}
@ -674,13 +736,12 @@ static int __devinit omap_dm_timer_probe(struct platform_device *pdev)
timer->id = pdev->id;
timer->irq = irq->start;
timer->reserved = pdata->reserved;
timer->reserved = omap_dm_timer_reserved_systimer(timer->id);
timer->pdev = pdev;
timer->loses_context = pdata->loses_context;
timer->get_context_loss_count = pdata->get_context_loss_count;
timer->capability = pdata->timer_capability;
/* Skip pm_runtime_enable for OMAP1 */
if (!pdata->needs_manual_reset) {
if (!(timer->capability & OMAP_TIMER_NEEDS_RESET)) {
pm_runtime_enable(&pdev->dev);
pm_runtime_irq_safe(&pdev->dev);
}

22
arch/arm/plat-omap/include/plat/dmtimer.h
View File

@ -55,23 +55,17 @@
#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
/*
* IP revision identifier so that Highlander IP
* 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
#define OMAP_TIMER_NEEDS_RESET 0x10000000
struct omap_timer_capability_dev_attr {
u32 timer_capability;
};
struct omap_dm_timer;
struct clk;
struct timer_regs {
u32 tidr;
@ -96,16 +90,12 @@ struct timer_regs {
};
struct dmtimer_platform_data {
/* set_timer_src - Only used for OMAP1 devices */
int (*set_timer_src)(struct platform_device *pdev, int source);
int timer_ip_version;
u32 needs_manual_reset:1;
bool reserved;
bool loses_context;
int (*get_context_loss_count)(struct device *dev);
u32 timer_capability;
};
int omap_dm_timer_reserve_systimer(int id);
struct omap_dm_timer *omap_dm_timer_request(void);
struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
int omap_dm_timer_free(struct omap_dm_timer *timer);
@ -272,13 +262,11 @@ struct omap_dm_timer {
unsigned reserved:1;
unsigned posted:1;
struct timer_regs context;
bool loses_context;
int ctx_loss_count;
int revision;
u32 capability;
struct platform_device *pdev;
struct list_head node;
int (*get_context_loss_count)(struct device *dev);
};
int omap_dm_timer_prepare(struct omap_dm_timer *timer);