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Second set of OMAP PRCM cleanups for 3.8.

Browse Source 
These patches remove the use of omap_prcm_get_reset_sources() from the
 OMAP watchdog driver, and remove mach-omap2/prcm.c and
 plat-omap/include/plat/prcm.h.
 
 Basic test logs for this branch on top of Tony's cleanup-prcm branch
 at commit 7fc54fd308 are here:
 
     http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/
 
 However, cleanup-prcm at 7fc54fd3 does not include some fixes
 that are needed for a successful test.  With several reverts,
 fixes, and workarounds applied, the following test logs were
 obtained:
 
     http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/
 
  which indicate that the series tests cleanly.
 
 This second pull request updates one of the patches which broke
 with rmk's allnoconfigs, and also updates the tag description to
 indicate that 7fc54fd3 is building cleanly here.
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Merge tag 'omap-cleanup-b2-for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.8/cleanup-prcm

Second set of OMAP PRCM cleanups for 3.8.

These patches remove the use of omap_prcm_get_reset_sources() from the
OMAP watchdog driver, and remove mach-omap2/prcm.c and
plat-omap/include/plat/prcm.h.

Basic test logs for this branch on top of Tony's cleanup-prcm branch
at commit 7fc54fd308 are here:

    http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/

However, cleanup-prcm at 7fc54fd3 does not include some fixes
that are needed for a successful test.  With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:

    http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/

 which indicate that the series tests cleanly.

This second pull request updates one of the patches which broke
with rmk's allnoconfigs, and also updates the tag description to
indicate that 7fc54fd3 is building cleanly here.
This commit is contained in:
Tony Lindgren 2012-11-09 14:13:43 -08:00
commit c9d501e5cb
90 changed files with 990 additions and 850 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-omap1/common.h
View File

@ -94,6 +94,6 @@ extern int ocpi_enable(void);
static inline int ocpi_enable(void) { return 0; }
#endif
extern int omap1_get_reset_sources(void);
extern u32 omap1_get_reset_sources(void);
#endif /* __ARCH_ARM_MACH_OMAP1_COMMON_H */

21
arch/arm/mach-omap1/devices.c
View File

@ -17,6 +17,8 @@
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/platform_data/omap-wd-timer.h>
#include <asm/mach/map.h>
#include <mach/tc.h>
@ -448,18 +450,31 @@ static struct resource wdt_resources[] = {
};
static struct platform_device omap_wdt_device = {
.name = "omap_wdt",
.id = -1,
.name = "omap_wdt",
.id = -1,
.num_resources = ARRAY_SIZE(wdt_resources),
.resource = wdt_resources,
};
static int __init omap_init_wdt(void)
{
struct omap_wd_timer_platform_data pdata;
int ret;
if (!cpu_is_omap16xx())
return -ENODEV;
return platform_device_register(&omap_wdt_device);
pdata.read_reset_sources = omap1_get_reset_sources;
ret = platform_device_register(&omap_wdt_device);
if (!ret) {
ret = platform_device_add_data(&omap_wdt_device, &pdata,
sizeof(pdata));
if (ret)
platform_device_del(&omap_wdt_device);
}
return ret;
}
subsys_initcall(omap_init_wdt);
#endif

9
arch/arm/mach-omap1/reset.c
View File

@ -4,10 +4,9 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <plat/prcm.h>
#include <mach/hardware.h>
#include "iomap.h"
#include "common.h"
/* ARM_SYSST bit shifts related to SoC reset sources */
@ -43,12 +42,12 @@ void omap1_restart(char mode, const char *cmd)
* Returns bits that represent the last reset source for the SoC. The
* format is standardized across OMAPs for use by the OMAP watchdog.
*/
int omap1_get_reset_sources(void)
u32 omap1_get_reset_sources(void)
{
int ret = 0;
u32 ret = 0;
u16 rs;
rs = __raw_readw(ARM_SYSST);
rs = __raw_readw(OMAP1_IO_ADDRESS(ARM_SYSST));
if (rs & (1 << ARM_SYSST_POR_SHIFT))
ret |= 1 << OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT;

7
arch/arm/mach-omap2/Makefile
View File

@ -50,6 +50,11 @@ AFLAGS_sram242x.o :=-Wa,-march=armv6
AFLAGS_sram243x.o :=-Wa,-march=armv6
AFLAGS_sram34xx.o :=-Wa,-march=armv7-a
# Restart code (OMAP4/5 currently in omap4-common.c)
obj-$(CONFIG_SOC_OMAP2420) += omap2-restart.o
obj-$(CONFIG_SOC_OMAP2430) += omap2-restart.o
obj-$(CONFIG_ARCH_OMAP3) += omap3-restart.o
# Pin multiplexing
obj-$(CONFIG_SOC_OMAP2420) += mux2420.o
obj-$(CONFIG_SOC_OMAP2430) += mux2430.o
@ -94,7 +99,7 @@ obj-$(CONFIG_ARCH_OMAP4) += cpuidle44xx.o
endif
# PRCM
obj-y += prcm.o prm_common.o cm_common.o
obj-y += prm_common.o cm_common.o
obj-$(CONFIG_ARCH_OMAP2) += prm2xxx_3xxx.o prm2xxx.o cm2xxx.o
obj-$(CONFIG_ARCH_OMAP3) += prm2xxx_3xxx.o prm3xxx.o cm3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += vc3xxx_data.o vp3xxx_data.o

1
arch/arm/mach-omap2/am33xx.h
View File

@ -21,5 +21,6 @@
#define AM33XX_SCM_BASE 0x44E10000
#define AM33XX_CTRL_BASE AM33XX_SCM_BASE
#define AM33XX_PRCM_BASE 0x44E00000
#define AM33XX_TAP_BASE (AM33XX_CTRL_BASE + 0x3FC)
#endif /* __ASM_ARCH_AM33XX_H */

2
arch/arm/mach-omap2/board-2430sdp.c
View File

@ -286,5 +286,5 @@ MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
.init_machine = omap_2430sdp_init,
.init_late = omap2430_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-3430sdp.c
View File

@ -597,5 +597,5 @@ MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
.init_machine = omap_3430sdp_init,
.init_late = omap3430_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-3630sdp.c
View File

@ -212,5 +212,5 @@ MACHINE_START(OMAP_3630SDP, "OMAP 3630SDP board")
.init_machine = omap_sdp_init,
.init_late = omap3630_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-4430sdp.c
View File

@ -881,5 +881,5 @@ MACHINE_START(OMAP_4430SDP, "OMAP4430 4430SDP board")
.init_machine = omap_4430sdp_init,
.init_late = omap4430_init_late,
.timer = &omap4_timer,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-am3517crane.c
View File

@ -93,5 +93,5 @@ MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")
.init_machine = am3517_crane_init,
.init_late = am35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-am3517evm.c
View File

@ -393,5 +393,5 @@ MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
.init_machine = am3517_evm_init,
.init_late = am35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-apollon.c
View File

@ -338,5 +338,5 @@ MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
.init_machine = omap_apollon_init,
.init_late = omap2420_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END

18
arch/arm/mach-omap2/board-cm-t35.c
View File

@ -753,18 +753,18 @@ MACHINE_START(CM_T35, "Compulab CM-T35")
.init_machine = cm_t35_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
MACHINE_START(CM_T3730, "Compulab CM-T3730")
.atag_offset = 0x100,
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3630_init_early,
.init_irq = omap3_init_irq,
.atag_offset = 0x100,
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3630_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = cm_t3730_init,
.init_machine = cm_t3730_init,
.init_late = omap3630_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.timer = &omap3_timer,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-cm-t3517.c
View File

@ -298,5 +298,5 @@ MACHINE_START(CM_T3517, "Compulab CM-T3517")
.init_machine = cm_t3517_init,
.init_late = am35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-devkit8000.c
View File

@ -643,5 +643,5 @@ MACHINE_START(DEVKIT8000, "OMAP3 Devkit8000")
.init_machine = devkit8000_init,
.init_late = omap35xx_init_late,
.timer = &omap3_secure_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

10
arch/arm/mach-omap2/board-generic.c
View File

@ -57,7 +57,7 @@ DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
.init_machine = omap_generic_init,
.timer = &omap2_timer,
.dt_compat = omap242x_boards_compat,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END
#endif
@ -76,7 +76,7 @@ DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
.init_machine = omap_generic_init,
.timer = &omap2_timer,
.dt_compat = omap243x_boards_compat,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END
#endif
@ -95,7 +95,7 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
.init_machine = omap_generic_init,
.timer = &omap3_timer,
.dt_compat = omap3_boards_compat,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
#endif
@ -134,7 +134,7 @@ DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
.init_late = omap4430_init_late,
.timer = &omap4_timer,
.dt_compat = omap4_boards_compat,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END
#endif
@ -154,6 +154,6 @@ DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
.init_machine = omap_generic_init,
.timer = &omap5_timer,
.dt_compat = omap5_boards_compat,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END
#endif

2
arch/arm/mach-omap2/board-h4.c
View File

@ -386,5 +386,5 @@ MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
.init_machine = omap_h4_init,
.init_late = omap2420_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END

4
arch/arm/mach-omap2/board-igep0020.c
View File

@ -651,7 +651,7 @@ MACHINE_START(IGEP0020, "IGEP v2 board")
.init_machine = igep_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
MACHINE_START(IGEP0030, "IGEP OMAP3 module")
@ -664,5 +664,5 @@ MACHINE_START(IGEP0030, "IGEP OMAP3 module")
.init_machine = igep_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-ldp.c
View File

@ -436,5 +436,5 @@ MACHINE_START(OMAP_LDP, "OMAP LDP board")
.init_machine = omap_ldp_init,
.init_late = omap3430_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

6
arch/arm/mach-omap2/board-n8x0.c
View File

@ -690,7 +690,7 @@ MACHINE_START(NOKIA_N800, "Nokia N800")
.init_machine = n8x0_init_machine,
.init_late = omap2420_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END
MACHINE_START(NOKIA_N810, "Nokia N810")
@ -703,7 +703,7 @@ MACHINE_START(NOKIA_N810, "Nokia N810")
.init_machine = n8x0_init_machine,
.init_late = omap2420_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END
MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX")
@ -716,5 +716,5 @@ MACHINE_START(NOKIA_N810_WIMAX, "Nokia N810 WiMAX")
.init_machine = n8x0_init_machine,
.init_late = omap2420_init_late,
.timer = &omap2_timer,
.restart = omap_prcm_restart,
.restart = omap2xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap3beagle.c
View File

@ -541,5 +541,5 @@ MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
.init_machine = omap3_beagle_init,
.init_late = omap3_init_late,
.timer = &omap3_secure_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap3evm.c
View File

@ -757,5 +757,5 @@ MACHINE_START(OMAP3EVM, "OMAP3 EVM")
.init_machine = omap3_evm_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

4
arch/arm/mach-omap2/board-omap3logic.c
View File

@ -232,7 +232,7 @@ MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
.init_machine = omap3logic_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
@ -245,5 +245,5 @@ MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
.init_machine = omap3logic_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap3pandora.c
View File

@ -619,5 +619,5 @@ MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
.init_machine = omap3pandora_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap3stalker.c
View File

@ -427,5 +427,5 @@ MACHINE_START(SBC3530, "OMAP3 STALKER")
.init_machine = omap3_stalker_init,
.init_late = omap35xx_init_late,
.timer = &omap3_secure_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap3touchbook.c
View File

@ -387,5 +387,5 @@ MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
.init_machine = omap3_touchbook_init,
.init_late = omap3430_init_late,
.timer = &omap3_secure_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-omap4panda.c
View File

@ -524,5 +524,5 @@ MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
.init_machine = omap4_panda_init,
.init_late = omap4430_init_late,
.timer = &omap4_timer,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-overo.c
View File

@ -553,5 +553,5 @@ MACHINE_START(OVERO, "Gumstix Overo")
.init_machine = overo_init,
.init_late = omap35xx_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

4
arch/arm/mach-omap2/board-rm680.c
View File

@ -148,7 +148,7 @@ MACHINE_START(NOKIA_RM680, "Nokia RM-680 board")
.init_machine = rm680_init,
.init_late = omap3630_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
MACHINE_START(NOKIA_RM696, "Nokia RM-696 board")
@ -161,5 +161,5 @@ MACHINE_START(NOKIA_RM696, "Nokia RM-696 board")
.init_machine = rm680_init,
.init_late = omap3630_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

2
arch/arm/mach-omap2/board-rx51.c
View File

@ -127,5 +127,5 @@ MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
.init_machine = rx51_init,
.init_late = omap3430_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

4
arch/arm/mach-omap2/board-ti8168evm.c
View File

@ -46,7 +46,7 @@ MACHINE_START(TI8168EVM, "ti8168evm")
.timer = &omap3_timer,
.init_machine = ti81xx_evm_init,
.init_late = ti81xx_init_late,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END
MACHINE_START(TI8148EVM, "ti8148evm")
@ -58,5 +58,5 @@ MACHINE_START(TI8148EVM, "ti8148evm")
.timer = &omap3_timer,
.init_machine = ti81xx_evm_init,
.init_late = ti81xx_init_late,
.restart = omap_prcm_restart,
.restart = omap44xx_restart,
MACHINE_END

4
arch/arm/mach-omap2/board-zoom.c
View File

@ -138,7 +138,7 @@ MACHINE_START(OMAP_ZOOM2, "OMAP Zoom2 board")
.init_machine = omap_zoom_init,
.init_late = omap3430_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END
MACHINE_START(OMAP_ZOOM3, "OMAP Zoom3 board")
@ -151,5 +151,5 @@ MACHINE_START(OMAP_ZOOM3, "OMAP Zoom3 board")
.init_machine = omap_zoom_init,
.init_late = omap3630_init_late,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
.restart = omap3xxx_restart,
MACHINE_END

57
arch/arm/mach-omap2/clkt2xxx_apll.c
View File

@ -21,7 +21,6 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <plat/prcm.h>
#include "clock.h"
#include "clock2xxx.h"
@ -37,44 +36,16 @@
#define APLLS_CLKIN_13MHZ 2
#define APLLS_CLKIN_12MHZ 3
void __iomem *cm_idlest_pll;
/* Private functions */
/* Enable an APLL if off */
static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
static int _apll96_enable(struct clk *clk)
{
u32 cval, apll_mask;
apll_mask = EN_APLL_LOCKED << clk->enable_bit;
cval = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
if ((cval & apll_mask) == apll_mask)
return 0; /* apll already enabled */
cval &= ~apll_mask;
cval |= apll_mask;
omap2_cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
omap2_cm_wait_idlest(cm_idlest_pll, status_mask,
OMAP24XX_CM_IDLEST_VAL, __clk_get_name(clk));
/*
* REVISIT: Should we return an error code if omap2_wait_clock_ready()
* fails?
*/
return 0;
return omap2xxx_cm_apll96_enable();
}
static int omap2_clk_apll96_enable(struct clk *clk)
static int _apll54_enable(struct clk *clk)
{
return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL_MASK);
}
static int omap2_clk_apll54_enable(struct clk *clk)
{
return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL_MASK);
return omap2xxx_cm_apll54_enable();
}
static void _apll96_allow_idle(struct clk *clk)
@ -97,28 +68,28 @@ static void _apll54_deny_idle(struct clk *clk)
omap2xxx_cm_set_apll54_disable_autoidle();
}
/* Stop APLL */
static void omap2_clk_apll_disable(struct clk *clk)
static void _apll96_disable(struct clk *clk)
{
u32 cval;
omap2xxx_cm_apll96_disable();
}
cval = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
cval &= ~(EN_APLL_LOCKED << clk->enable_bit);
omap2_cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
static void _apll54_disable(struct clk *clk)
{
omap2xxx_cm_apll54_disable();
}
/* Public data */
const struct clkops clkops_apll96 = {
.enable = omap2_clk_apll96_enable,
.disable = omap2_clk_apll_disable,
.enable = _apll96_enable,
.disable = _apll96_disable,
.allow_idle = _apll96_allow_idle,
.deny_idle = _apll96_deny_idle,
};
const struct clkops clkops_apll54 = {
.enable = omap2_clk_apll54_enable,
.disable = omap2_clk_apll_disable,
.enable = _apll54_enable,
.disable = _apll54_disable,
.allow_idle = _apll54_allow_idle,
.deny_idle = _apll54_deny_idle,
};

36
arch/arm/mach-omap2/clkt2xxx_dpllcore.c
View File

@ -30,15 +30,21 @@
#include "clock.h"
#include "clock2xxx.h"
#include "opp2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
#include "sdrc.h"
/* #define DOWN_VARIABLE_DPLL 1 */ /* Experimental */
/*
* dpll_core_ck: pointer to the combined dpll_ck + core_ck on OMAP2xxx
* (currently defined as "dpll_ck" in the OMAP2xxx clock tree). Set
* during dpll_ck init and used later by omap2xxx_clk_get_core_rate().
*/
static struct clk *dpll_core_ck;
/**
* omap2xxx_clk_get_core_rate - return the CORE_CLK rate
* @clk: pointer to the combined dpll_ck + core_ck (currently "dpll_ck")
*
* Returns the CORE_CLK rate. CORE_CLK can have one of three rate
* sources on OMAP2xxx: the DPLL CLKOUT rate, DPLL CLKOUTX2, or 32KHz
@ -46,12 +52,14 @@
* struct clk *dpll_ck, which is a composite clock of dpll_ck and
* core_ck.
*/
unsigned long omap2xxx_clk_get_core_rate(struct clk *clk)
unsigned long omap2xxx_clk_get_core_rate(void)
{
long long core_clk;
u32 v;
core_clk = omap2_get_dpll_rate(clk);
WARN_ON(!dpll_core_ck);
core_clk = omap2_get_dpll_rate(dpll_core_ck);
v = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
v &= OMAP24XX_CORE_CLK_SRC_MASK;
@ -99,7 +107,7 @@ static long omap2_dpllcore_round_rate(unsigned long target_rate)
unsigned long omap2_dpllcore_recalc(struct clk *clk)
{
return omap2xxx_clk_get_core_rate(clk);
return omap2xxx_clk_get_core_rate();
}
int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
@ -109,7 +117,7 @@ int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
struct prcm_config tmpset;
const struct dpll_data *dd;
cur_rate = omap2xxx_clk_get_core_rate(dclk);
cur_rate = omap2xxx_clk_get_core_rate();
mult = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
mult &= OMAP24XX_CORE_CLK_SRC_MASK;
@ -170,3 +178,19 @@ int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
return 0;
}
/**
* omap2xxx_clkt_dpllcore_init - clk init function for dpll_ck
* @clk: struct clk *dpll_ck
*
* Store a local copy of @clk in dpll_core_ck so other code can query
* the core rate without having to clk_get(), which can sleep. Must
* only be called once. No return value. XXX If the clock
* registration process is ever changed such that dpll_ck is no longer
* statically defined, this code may need to change to increment some
* kind of use count on dpll_ck.
*/
void omap2xxx_clkt_dpllcore_init(struct clk *clk)
{
WARN(dpll_core_ck, "dpll_core_ck already set - should never happen");
dpll_core_ck = clk;
}

70
arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
View File

@ -1,7 +1,7 @@
/*
* OMAP2xxx DVFS virtual clock functions
*
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2005-2008, 2012 Texas Instruments, Inc.
* Copyright (C) 2004-2010 Nokia Corporation
*
* Contacts:
@ -39,13 +39,20 @@
#include "clock.h"
#include "clock2xxx.h"
#include "opp2xxx.h"
#include "cm2xxx_3xxx.h"
#include "cm2xxx.h"
#include "cm-regbits-24xx.h"
#include "sdrc.h"
const struct prcm_config *curr_prcm_set;
const struct prcm_config *rate_table;
/*
* sys_ck_rate: the rate of the external high-frequency clock
* oscillator on the board. Set by the SoC-specific clock init code.
* Once set during a boot, will not change.
*/
static unsigned long sys_ck_rate;
/**
* omap2_table_mpu_recalc - just return the MPU speed
* @clk: virt_prcm_set struct clk
@ -67,15 +74,14 @@ unsigned long omap2_table_mpu_recalc(struct clk *clk)
long omap2_round_to_table_rate(struct clk *clk, unsigned long rate)
{
const struct prcm_config *ptr;
long highest_rate, sys_clk_rate;
long highest_rate;
highest_rate = -EINVAL;
sys_clk_rate = __clk_get_rate(sclk);
for (ptr = rate_table; ptr->mpu_speed; ptr++) {
if (!(ptr->flags & cpu_mask))
continue;
if (ptr->xtal_speed != sys_clk_rate)
if (ptr->xtal_speed != sys_ck_rate)
continue;
highest_rate = ptr->mpu_speed;
@ -94,15 +100,12 @@ int omap2_select_table_rate(struct clk *clk, unsigned long rate)
const struct prcm_config *prcm;
unsigned long found_speed = 0;
unsigned long flags;
long sys_clk_rate;
sys_clk_rate = __clk_get_rate(sclk);
for (prcm = rate_table; prcm->mpu_speed; prcm++) {
if (!(prcm->flags & cpu_mask))
continue;
if (prcm->xtal_speed != sys_clk_rate)
if (prcm->xtal_speed != sys_ck_rate)
continue;
if (prcm->mpu_speed <= rate) {
@ -118,7 +121,7 @@ int omap2_select_table_rate(struct clk *clk, unsigned long rate)
}
curr_prcm_set = prcm;
cur_rate = omap2xxx_clk_get_core_rate(dclk);
cur_rate = omap2xxx_clk_get_core_rate();
if (prcm->dpll_speed == cur_rate / 2) {
omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
@ -168,3 +171,50 @@ int omap2_select_table_rate(struct clk *clk, unsigned long rate)
return 0;
}
/**
* omap2xxx_clkt_vps_check_bootloader_rate - determine which of the rate
* table sets matches the current CORE DPLL hardware rate
*
* Check the MPU rate set by bootloader. Sets the 'curr_prcm_set'
* global to point to the active rate set when found; otherwise, sets
* it to NULL. No return value;
*/
void omap2xxx_clkt_vps_check_bootloader_rates(void)
{
const struct prcm_config *prcm = NULL;
unsigned long rate;
rate = omap2xxx_clk_get_core_rate();
for (prcm = rate_table; prcm->mpu_speed; prcm++) {
if (!(prcm->flags & cpu_mask))
continue;
if (prcm->xtal_speed != sys_ck_rate)
continue;
if (prcm->dpll_speed <= rate)
break;
}
curr_prcm_set = prcm;
}
/**
* omap2xxx_clkt_vps_late_init - store a copy of the sys_ck rate
*
* Store a copy of the sys_ck rate for later use by the OMAP2xxx DVFS
* code. (The sys_ck rate does not -- or rather, must not -- change
* during kernel runtime.) Must be called after we have a valid
* sys_ck rate, but before the virt_prcm_set clock rate is
* recalculated. No return value.
*/
void omap2xxx_clkt_vps_late_init(void)
{
struct clk *c;
c = clk_get(NULL, "sys_ck");
if (IS_ERR(c)) {
WARN(1, "could not locate sys_ck\n");
} else {
sys_ck_rate = clk_get_rate(c);
clk_put(c);
}
}

1
arch/arm/mach-omap2/clkt_iclk.c
View File

@ -14,7 +14,6 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <plat/prcm.h>
#include "clock.h"
#include "clock2xxx.h"

57
arch/arm/mach-omap2/clock.c
View File

@ -26,17 +26,24 @@
#include <asm/cpu.h>
#include <plat/prcm.h>
#include <trace/events/power.h>
#include "soc.h"
#include "clockdomain.h"
#include "clock.h"
#include "cm.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-24xx.h"
#include "cm-regbits-34xx.h"
#include "common.h"
/*
* MAX_MODULE_ENABLE_WAIT: maximum of number of microseconds to wait
* for a module to indicate that it is no longer in idle
*/
#define MAX_MODULE_ENABLE_WAIT 100000
u16 cpu_mask;
@ -58,6 +65,40 @@ static DEFINE_SPINLOCK(clockfw_lock);
/* Private functions */
/**
* _wait_idlest_generic - wait for a module to leave the idle state
* @reg: virtual address of module IDLEST register
* @mask: value to mask against to determine if the module is active
* @idlest: idle state indicator (0 or 1) for the clock
* @name: name of the clock (for printk)
*
* Wait for a module to leave idle, where its idle-status register is
* not inside the CM module. Returns 1 if the module left idle
* promptly, or 0 if the module did not leave idle before the timeout
* elapsed. XXX Deprecated - should be moved into drivers for the
* individual IP block that the IDLEST register exists in.
*/
static int _wait_idlest_generic(void __iomem *reg, u32 mask, u8 idlest,
const char *name)
{
int i = 0, ena = 0;
ena = (idlest) ? 0 : mask;
omap_test_timeout(((__raw_readl(reg) & mask) == ena),
MAX_MODULE_ENABLE_WAIT, i);
if (i < MAX_MODULE_ENABLE_WAIT)
pr_debug("omap clock: module associated with clock %s ready after %d loops\n",
name, i);
else
pr_err("omap clock: module associated with clock %s didn't enable in %d tries\n",
name, MAX_MODULE_ENABLE_WAIT);
return (i < MAX_MODULE_ENABLE_WAIT) ? 1 : 0;
};
/**
* _omap2_module_wait_ready - wait for an OMAP module to leave IDLE
* @clk: struct clk * belonging to the module
@ -71,7 +112,9 @@ static DEFINE_SPINLOCK(clockfw_lock);
static void _omap2_module_wait_ready(struct clk *clk)
{
void __iomem *companion_reg, *idlest_reg;
u8 other_bit, idlest_bit, idlest_val;
u8 other_bit, idlest_bit, idlest_val, idlest_reg_id;
s16 prcm_mod;
int r;
/* Not all modules have multiple clocks that their IDLEST depends on */
if (clk->ops->find_companion) {
@ -82,8 +125,14 @@ static void _omap2_module_wait_ready(struct clk *clk)
clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val);
omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), idlest_val,
__clk_get_name(clk));
r = cm_split_idlest_reg(idlest_reg, &prcm_mod, &idlest_reg_id);
if (r) {
/* IDLEST register not in the CM module */
_wait_idlest_generic(idlest_reg, (1 << idlest_bit), idlest_val,
clk->name);
} else {
cm_wait_module_ready(prcm_mod, idlest_reg_id, idlest_bit);
};
}
/* Public functions */

28
arch/arm/mach-omap2/clock.h
View File

@ -409,33 +409,6 @@ extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
u32 omap2_get_dpll_rate(struct clk *clk);
void omap2_init_dpll_parent(struct clk *clk);
int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
#ifdef CONFIG_ARCH_OMAP2
void omap2xxx_clk_prepare_for_reboot(void);
#else
static inline void omap2xxx_clk_prepare_for_reboot(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP3
void omap3_clk_prepare_for_reboot(void);
#else
static inline void omap3_clk_prepare_for_reboot(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP4
void omap4_clk_prepare_for_reboot(void);
#else
static inline void omap4_clk_prepare_for_reboot(void)
{
}
#endif
int omap2_dflt_clk_enable(struct clk *clk);
void omap2_dflt_clk_disable(struct clk *clk);
void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
@ -454,7 +427,6 @@ extern const struct clkops clkops_dummy;
extern const struct clkops clkops_omap2_dflt;
extern struct clk_functions omap2_clk_functions;
extern struct clk *vclk, *sclk;
extern const struct clksel_rate gpt_32k_rates[];
extern const struct clksel_rate gpt_sys_rates[];

26
arch/arm/mach-omap2/clock2420_data.c
View File

@ -1,7 +1,7 @@
/*
* OMAP2420 clock data
*
* Copyright (C) 2005-2009 Texas Instruments, Inc.
* Copyright (C) 2005-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2004-2011 Nokia Corporation
*
* Contacts:
@ -124,6 +124,7 @@ static struct clk dpll_ck = {
.name = "dpll_ck",
.ops = &clkops_omap2xxx_dpll_ops,
.parent = &sys_ck, /* Can be func_32k also */
.init = &omap2xxx_clkt_dpllcore_init,
.dpll_data = &dpll_dd,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_dpllcore_recalc,
@ -1924,12 +1925,9 @@ static struct omap_clk omap2420_clks[] = {
int __init omap2420_clk_init(void)
{
const struct prcm_config *prcm;
struct omap_clk *c;
u32 clkrate;
prcm_clksrc_ctrl = OMAP2420_PRCM_CLKSRC_CTRL;
cm_idlest_pll = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST);
cpu_mask = RATE_IN_242X;
rate_table = omap2420_rate_table;
@ -1949,20 +1947,13 @@ int __init omap2420_clk_init(void)
omap2_init_clk_clkdm(c->lk.clk);
}
omap2xxx_clkt_vps_late_init();
/* Disable autoidle on all clocks; let the PM code enable it later */
omap_clk_disable_autoidle_all();
/* Check the MPU rate set by bootloader */
clkrate = omap2xxx_clk_get_core_rate(&dpll_ck);
for (prcm = rate_table; prcm->mpu_speed; prcm++) {
if (!(prcm->flags & cpu_mask))
continue;
if (prcm->xtal_speed != sys_ck.rate)
continue;
if (prcm->dpll_speed <= clkrate)
break;
}
curr_prcm_set = prcm;
/* XXX Can this be done from the virt_prcm_set clk init function? */
omap2xxx_clkt_vps_check_bootloader_rates();
recalculate_root_clocks();
@ -1976,11 +1967,6 @@ int __init omap2420_clk_init(void)
*/
clk_enable_init_clocks();
/* Avoid sleeping sleeping during omap2_clk_prepare_for_reboot() */
vclk = clk_get(NULL, "virt_prcm_set");
sclk = clk_get(NULL, "sys_ck");
dclk = clk_get(NULL, "dpll_ck");
return 0;
}

26
arch/arm/mach-omap2/clock2430_data.c
View File

@ -1,7 +1,7 @@
/*
* OMAP2430 clock data
*
* Copyright (C) 2005-2009 Texas Instruments, Inc.
* Copyright (C) 2005-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2004-2011 Nokia Corporation
*
* Contacts:
@ -123,6 +123,7 @@ static struct clk dpll_ck = {
.name = "dpll_ck",
.ops = &clkops_omap2xxx_dpll_ops,
.parent = &sys_ck, /* Can be func_32k also */
.init = &omap2xxx_clkt_dpllcore_init,
.dpll_data = &dpll_dd,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_dpllcore_recalc,
@ -2023,12 +2024,9 @@ static struct omap_clk omap2430_clks[] = {
int __init omap2430_clk_init(void)
{
const struct prcm_config *prcm;
struct omap_clk *c;
u32 clkrate;
prcm_clksrc_ctrl = OMAP2430_PRCM_CLKSRC_CTRL;
cm_idlest_pll = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST);
cpu_mask = RATE_IN_243X;
rate_table = omap2430_rate_table;
@ -2048,20 +2046,13 @@ int __init omap2430_clk_init(void)
omap2_init_clk_clkdm(c->lk.clk);
}
omap2xxx_clkt_vps_late_init();
/* Disable autoidle on all clocks; let the PM code enable it later */
omap_clk_disable_autoidle_all();
/* Check the MPU rate set by bootloader */
clkrate = omap2xxx_clk_get_core_rate(&dpll_ck);
for (prcm = rate_table; prcm->mpu_speed; prcm++) {
if (!(prcm->flags & cpu_mask))
continue;
if (prcm->xtal_speed != sys_ck.rate)
continue;
if (prcm->dpll_speed <= clkrate)
break;
}
curr_prcm_set = prcm;
/* XXX Can this be done from the virt_prcm_set clk init function? */
omap2xxx_clkt_vps_check_bootloader_rates();
recalculate_root_clocks();
@ -2075,11 +2066,6 @@ int __init omap2430_clk_init(void)
*/
clk_enable_init_clocks();
/* Avoid sleeping sleeping during omap2_clk_prepare_for_reboot() */
vclk = clk_get(NULL, "virt_prcm_set");
sclk = clk_get(NULL, "sys_ck");
dclk = clk_get(NULL, "dpll_ck");
return 0;
}

16
arch/arm/mach-omap2/clock2xxx.c
View File

@ -28,26 +28,10 @@
#include "cm.h"
#include "cm-regbits-24xx.h"
struct clk *vclk, *sclk, *dclk;
/*
* Omap24xx specific clock functions
*/
/*
* Set clocks for bypass mode for reboot to work.
*/
void omap2xxx_clk_prepare_for_reboot(void)
{
u32 rate;
if (vclk == NULL || sclk == NULL)
return;
rate = clk_get_rate(sclk);
clk_set_rate(vclk, rate);
}
/*
* Switch the MPU rate if specified on cmdline. We cannot do this
* early until cmdline is parsed. XXX This should be removed from the

9
arch/arm/mach-omap2/clock2xxx.h
View File

@ -15,10 +15,13 @@ unsigned long omap2xxx_sys_clk_recalc(struct clk *clk);
unsigned long omap2_osc_clk_recalc(struct clk *clk);
unsigned long omap2_dpllcore_recalc(struct clk *clk);
int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate);
unsigned long omap2xxx_clk_get_core_rate(struct clk *clk);
unsigned long omap2xxx_clk_get_core_rate(void);
u32 omap2xxx_get_apll_clkin(void);
u32 omap2xxx_get_sysclkdiv(void);
void omap2xxx_clk_prepare_for_reboot(void);
void omap2xxx_clkt_dpllcore_init(struct clk *clk);
void omap2xxx_clkt_vps_check_bootloader_rates(void);
void omap2xxx_clkt_vps_late_init(void);
#ifdef CONFIG_SOC_OMAP2420
int omap2420_clk_init(void);
@ -32,9 +35,7 @@ int omap2430_clk_init(void);
#define omap2430_clk_init() do { } while(0)
#endif
extern void __iomem *prcm_clksrc_ctrl, *cm_idlest_pll;
extern struct clk *dclk;
extern void __iomem *prcm_clksrc_ctrl;
extern const struct clkops clkops_omap2430_i2chs_wait;
extern const struct clkops clkops_oscck;

2
arch/arm/mach-omap2/cm-regbits-24xx.h
View File

@ -333,7 +333,9 @@
#define OMAP24XX_EN_DPLL_MASK (0x3 << 0)
/* CM_IDLEST_CKGEN */
#define OMAP24XX_ST_54M_APLL_SHIFT 9
#define OMAP24XX_ST_54M_APLL_MASK (1 << 9)
#define OMAP24XX_ST_96M_APLL_SHIFT 8
#define OMAP24XX_ST_96M_APLL_MASK (1 << 8)
#define OMAP24XX_ST_54M_CLK_MASK (1 << 6)
#define OMAP24XX_ST_12M_CLK_MASK (1 << 5)

20
arch/arm/mach-omap2/cm.h
View File

@ -1,7 +1,7 @@
/*
* OMAP2+ Clock Management prototypes
*
* Copyright (C) 2007-2009 Texas Instruments, Inc.
* Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2007-2009 Nokia Corporation
*
* Written by Paul Walmsley
@ -22,6 +22,12 @@
*/
#define MAX_MODULE_READY_TIME 2000
# ifndef __ASSEMBLER__
extern void __iomem *cm_base;
extern void __iomem *cm2_base;
extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
# endif
/*
* MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
* the PRCM to request that a module enter the inactive state in the
@ -37,8 +43,18 @@
/**
* struct cm_ll_data - fn ptrs to per-SoC CM function implementations
* @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
* @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
*/
struct cm_ll_data {};
struct cm_ll_data {
int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id);
int (*wait_module_ready)(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
};
extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id);
extern int cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift);
extern int cm_register(struct cm_ll_data *cld);
extern int cm_unregister(struct cm_ll_data *cld);

128
arch/arm/mach-omap2/cm2xxx.c
View File

@ -35,6 +35,9 @@
#define OMAP2XXX_APLL_AUTOIDLE_DISABLE 0x0
#define OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP 0x3
/* CM_IDLEST_PLL bit value offset for APLLs (OMAP2xxx only) */
#define EN_APLL_LOCKED 3
static const u8 omap2xxx_cm_idlest_offs[] = {
CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3, OMAP24XX_CM_IDLEST4
};
@ -99,7 +102,7 @@ void omap2xxx_cm_set_dpll_auto_low_power_stop(void)
}
/*
* APLL autoidle control
* APLL control
*/
static void _omap2xxx_set_apll_autoidle(u8 m, u32 mask)
@ -136,6 +139,102 @@ void omap2xxx_cm_set_apll96_auto_low_power_stop(void)
OMAP24XX_AUTO_96M_MASK);
}
/* Enable an APLL if off */
static int _omap2xxx_apll_enable(u8 enable_bit, u8 status_bit)
{
u32 v, m;
m = EN_APLL_LOCKED << enable_bit;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
if (v & m)
return 0; /* apll already enabled */
v |= m;
omap2_cm_write_mod_reg(v, PLL_MOD, CM_CLKEN);
omap2xxx_cm_wait_module_ready(PLL_MOD, 1, status_bit);
/*
* REVISIT: Should we return an error code if
* omap2xxx_cm_wait_module_ready() fails?
*/
return 0;
}
/* Stop APLL */
static void _omap2xxx_apll_disable(u8 enable_bit)
{
u32 v;
v = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
v &= ~(EN_APLL_LOCKED << enable_bit);
omap2_cm_write_mod_reg(v, PLL_MOD, CM_CLKEN);
}
/* Enable an APLL if off */
int omap2xxx_cm_apll54_enable(void)
{
return _omap2xxx_apll_enable(OMAP24XX_EN_54M_PLL_SHIFT,
OMAP24XX_ST_54M_APLL_SHIFT);
}
/* Enable an APLL if off */
int omap2xxx_cm_apll96_enable(void)
{
return _omap2xxx_apll_enable(OMAP24XX_EN_96M_PLL_SHIFT,
OMAP24XX_ST_96M_APLL_SHIFT);
}
/* Stop APLL */
void omap2xxx_cm_apll54_disable(void)
{
_omap2xxx_apll_disable(OMAP24XX_EN_54M_PLL_SHIFT);
}
/* Stop APLL */
void omap2xxx_cm_apll96_disable(void)
{
_omap2xxx_apll_disable(OMAP24XX_EN_96M_PLL_SHIFT);
}
/**
* omap2xxx_cm_split_idlest_reg - split CM_IDLEST reg addr into its components
* @idlest_reg: CM_IDLEST* virtual address
* @prcm_inst: pointer to an s16 to return the PRCM instance offset
* @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID
*
* XXX This function is only needed until absolute register addresses are
* removed from the OMAP struct clk records.
*/
int omap2xxx_cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id)
{
unsigned long offs;
u8 idlest_offs;
int i;
if (idlest_reg < cm_base || idlest_reg > (cm_base + 0x0fff))
return -EINVAL;
idlest_offs = (unsigned long)idlest_reg & 0xff;
for (i = 0; i < ARRAY_SIZE(omap2xxx_cm_idlest_offs); i++) {
if (idlest_offs == omap2xxx_cm_idlest_offs[i]) {
*idlest_reg_id = i + 1;
break;
}
}
if (i == ARRAY_SIZE(omap2xxx_cm_idlest_offs))
return -EINVAL;
offs = idlest_reg - cm_base;
offs &= 0xff00;
*prcm_inst = offs;
return 0;
}
/*
*
*/
@ -253,3 +352,30 @@ struct clkdm_ops omap2_clkdm_operations = {
.clkdm_clk_disable = omap2xxx_clkdm_clk_disable,
};
/*
*
*/
static struct cm_ll_data omap2xxx_cm_ll_data = {
.split_idlest_reg = &omap2xxx_cm_split_idlest_reg,
.wait_module_ready = &omap2xxx_cm_wait_module_ready,
};
int __init omap2xxx_cm_init(void)
{
if (!cpu_is_omap24xx())
return 0;
return cm_register(&omap2xxx_cm_ll_data);
}
static void __exit omap2xxx_cm_exit(void)
{
if (!cpu_is_omap24xx())
return;
/* Should never happen */
WARN(cm_unregister(&omap2xxx_cm_ll_data),
"%s: cm_ll_data function pointer mismatch\n", __func__);
}
__exitcall(omap2xxx_cm_exit);

4
arch/arm/mach-omap2/cm2xxx.h
View File

@ -60,6 +60,10 @@ extern void omap2xxx_cm_set_apll96_auto_low_power_stop(void);
extern bool omap2xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask);
extern int omap2xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
u8 idlest_shift);
extern int omap2xxx_cm_split_idlest_reg(void __iomem *idlest_reg,
s16 *prcm_inst, u8 *idlest_reg_id);
extern int __init omap2xxx_cm_init(void);
#endif

8
arch/arm/mach-omap2/cm2xxx_3xxx.h
View File

@ -16,7 +16,7 @@
#ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
#define __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
#include "prcm-common.h"
#include "cm.h"
/*
* Module specific CM register offsets from CM_BASE + domain offset
@ -96,6 +96,11 @@ static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
}
extern int omap2xxx_cm_apll54_enable(void);
extern void omap2xxx_cm_apll54_disable(void);
extern int omap2xxx_cm_apll96_enable(void);
extern void omap2xxx_cm_apll96_disable(void);
#endif
/* CM register bits shared between 24XX and 3430 */
@ -111,5 +116,4 @@ static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
/* CM_IDLEST_GFX */
#define OMAP_ST_GFX_MASK (1 << 0)
#endif

66
arch/arm/mach-omap2/cm3xxx.c
View File

@ -110,6 +110,44 @@ int omap3xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
}
/**
* omap3xxx_cm_split_idlest_reg - split CM_IDLEST reg addr into its components
* @idlest_reg: CM_IDLEST* virtual address
* @prcm_inst: pointer to an s16 to return the PRCM instance offset
* @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID
*
* XXX This function is only needed until absolute register addresses are
* removed from the OMAP struct clk records.
*/
int omap3xxx_cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id)
{
unsigned long offs;
u8 idlest_offs;
int i;
if (idlest_reg < (cm_base + OMAP3430_IVA2_MOD) ||
idlest_reg > (cm_base + 0x1ffff))
return -EINVAL;
idlest_offs = (unsigned long)idlest_reg & 0xff;
for (i = 0; i < ARRAY_SIZE(omap3xxx_cm_idlest_offs); i++) {
if (idlest_offs == omap3xxx_cm_idlest_offs[i]) {
*idlest_reg_id = i + 1;
break;
}
}
if (i == ARRAY_SIZE(omap3xxx_cm_idlest_offs))
return -EINVAL;
offs = idlest_reg - cm_base;
offs &= 0xff00;
*prcm_inst = offs;
return 0;
}
/* Clockdomain low-level operations */
static int omap3xxx_clkdm_add_sleepdep(struct clockdomain *clkdm1,
@ -597,3 +635,31 @@ void omap3_cm_restore_context(void)
omap2_cm_write_mod_reg(cm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD,
OMAP3_CM_CLKOUT_CTRL_OFFSET);
}
/*
*
*/
static struct cm_ll_data omap3xxx_cm_ll_data = {
.split_idlest_reg = &omap3xxx_cm_split_idlest_reg,
.wait_module_ready = &omap3xxx_cm_wait_module_ready,
};
int __init omap3xxx_cm_init(void)
{
if (!cpu_is_omap34xx())
return 0;
return cm_register(&omap3xxx_cm_ll_data);
}
static void __exit omap3xxx_cm_exit(void)
{
if (!cpu_is_omap34xx())
return;
/* Should never happen */
WARN(cm_unregister(&omap3xxx_cm_ll_data),
"%s: cm_ll_data function pointer mismatch\n", __func__);
}
__exitcall(omap3xxx_cm_exit);

5
arch/arm/mach-omap2/cm3xxx.h
View File

@ -78,9 +78,14 @@ extern bool omap3xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask);
extern int omap3xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
u8 idlest_shift);
extern int omap3xxx_cm_split_idlest_reg(void __iomem *idlest_reg,
s16 *prcm_inst, u8 *idlest_reg_id);
extern void omap3_cm_save_context(void);
extern void omap3_cm_restore_context(void);
extern int __init omap3xxx_cm_init(void);
#endif
#endif

70
arch/arm/mach-omap2/cm_common.c
View File

@ -2,7 +2,7 @@
* OMAP2+ common Clock Management (CM) IP block functions
*
* Copyright (C) 2012 Texas Instruments, Inc.
* Paul Walmsley <paul@pwsan.com>
* Paul Walmsley
*
* 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
@ -17,6 +17,7 @@
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cm44xx.h"
#include "common.h"
/*
* cm_ll_data: function pointers to SoC-specific implementations of
@ -25,6 +26,73 @@
static struct cm_ll_data null_cm_ll_data;
static struct cm_ll_data *cm_ll_data = &null_cm_ll_data;
/* cm_base: base virtual address of the CM IP block */
void __iomem *cm_base;
/* cm2_base: base virtual address of the CM2 IP block (OMAP44xx only) */
void __iomem *cm2_base;
/**
* omap2_set_globals_cm - set the CM/CM2 base addresses (for early use)
* @cm: CM base virtual address
* @cm2: CM2 base virtual address (if present on the booted SoC)
*
* XXX Will be replaced when the PRM/CM drivers are completed.
*/
void __init omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2)
{
cm_base = cm;
cm2_base = cm2;
}
/**
* cm_split_idlest_reg - split CM_IDLEST reg addr into its components
* @idlest_reg: CM_IDLEST* virtual address
* @prcm_inst: pointer to an s16 to return the PRCM instance offset
* @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID
*
* Given an absolute CM_IDLEST register address @idlest_reg, passes
* the PRCM instance offset and IDLEST register ID back to the caller
* via the @prcm_inst and @idlest_reg_id. Returns -EINVAL upon error,
* or 0 upon success. XXX This function is only needed until absolute
* register addresses are removed from the OMAP struct clk records.
*/
int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id)
{
if (!cm_ll_data->split_idlest_reg) {
WARN_ONCE(1, "cm: %s: no low-level function defined\n",
__func__);
return -EINVAL;
}
return cm_ll_data->split_idlest_reg(idlest_reg, prcm_inst,
idlest_reg_id);
}
/**
* cm_wait_module_ready - wait for a module to leave idle or standby
* @prcm_mod: PRCM module offset
* @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3)
* @idlest_shift: shift of the bit in the CM_IDLEST* register to check
*
* Wait for the PRCM to indicate that the module identified by
* (@prcm_mod, @idlest_id, @idlest_shift) is clocked. Return 0 upon
* success, -EBUSY if the module doesn't enable in time, or -EINVAL if
* no per-SoC wait_module_ready() function pointer has been registered
* or if the idlest register is unknown on the SoC.
*/
int cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
{
if (!cm_ll_data->wait_module_ready) {
WARN_ONCE(1, "cm: %s: no low-level function defined\n",
__func__);
return -EINVAL;
}
return cm_ll_data->wait_module_ready(prcm_mod, idlest_id, idlest_shift);
}
/**
* cm_register - register per-SoC low-level data with the CM
* @cld: low-level per-SoC OMAP CM data & function pointers to register

2
arch/arm/mach-omap2/cminst44xx.h
View File

@ -38,4 +38,6 @@ extern u32 omap4_cminst_clear_inst_reg_bits(u32 bits, u8 part, s16 inst,
extern u32 omap4_cminst_read_inst_reg_bits(u8 part, u16 inst, s16 idx,
u32 mask);
extern void omap_cm_base_init(void);
#endif

183
arch/arm/mach-omap2/common.c
View File

@ -14,196 +14,13 @@
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/platform_data/dsp-omap.h>
#include <plat/vram.h>
#include "soc.h"
#include "iomap.h"
#include "common.h"
#include "clock.h"
#include "sdrc.h"
#include "control.h"
#include "omap-secure.h"
/* Global address base setup code */
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);
}
#if defined(CONFIG_SOC_OMAP2420)
static struct omap_globals omap242x_globals = {
.class = OMAP242X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x48014000),
.sdrc = OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE),
.sms = OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE),
.ctrl = OMAP2_L4_IO_ADDRESS(OMAP242X_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(OMAP2420_PRM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(OMAP2420_CM_BASE),
};
void __init omap2_set_globals_242x(void)
{
__omap2_set_globals(&omap242x_globals);
}
void __init omap242x_map_io(void)
{
omap242x_map_common_io();
}
#endif
#if defined(CONFIG_SOC_OMAP2430)
static struct omap_globals omap243x_globals = {
.class = OMAP243X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x4900a000),
.sdrc = OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE),
.sms = OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE),
.ctrl = OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(OMAP2430_PRM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(OMAP2430_CM_BASE),
};
void __init omap2_set_globals_243x(void)
{
__omap2_set_globals(&omap243x_globals);
}
void __init omap243x_map_io(void)
{
omap243x_map_common_io();
}
#endif
#if defined(CONFIG_ARCH_OMAP3)
static struct omap_globals omap3_globals = {
.class = OMAP343X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x4830A000),
.sdrc = OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE),
.sms = OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE),
.ctrl = OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE),
};
void __init omap2_set_globals_3xxx(void)
{
__omap2_set_globals(&omap3_globals);
}
void __init omap3_map_io(void)
{
omap34xx_map_common_io();
}
/*
* Adjust TAP register base such that omap3_check_revision accesses the correct
* TI81XX register for checking device ID (it adds 0x204 to tap base while
* TI81XX DEVICE ID register is at offset 0x600 from control base).
*/
#define TI81XX_TAP_BASE (TI81XX_CTRL_BASE + \
TI81XX_CONTROL_DEVICE_ID - 0x204)
static struct omap_globals ti81xx_globals = {
.class = OMAP343X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE),
.ctrl = OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE),
};
void __init omap2_set_globals_ti81xx(void)
{
__omap2_set_globals(&ti81xx_globals);
}
void __init ti81xx_map_io(void)
{
omapti81xx_map_common_io();
}
#endif
#if defined(CONFIG_SOC_AM33XX)
#define AM33XX_TAP_BASE (AM33XX_CTRL_BASE + \
TI81XX_CONTROL_DEVICE_ID - 0x204)
static struct omap_globals am33xx_globals = {
.class = AM335X_CLASS,
.tap = AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE),
.ctrl = AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE),
.prm = AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE),
.cm = AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE),
};
void __init omap2_set_globals_am33xx(void)
{
__omap2_set_globals(&am33xx_globals);
}
void __init am33xx_map_io(void)
{
omapam33xx_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 = OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE),
.ctrl_pad = OMAP2_L4_IO_ADDRESS(OMAP443X_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(OMAP4430_PRM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(OMAP4430_CM_BASE),
.cm2 = OMAP2_L4_IO_ADDRESS(OMAP4430_CM2_BASE),
.prcm_mpu = OMAP2_L4_IO_ADDRESS(OMAP4430_PRCM_MPU_BASE),
};
void __init omap2_set_globals_443x(void)
{
__omap2_set_globals(&omap4_globals);
}
void __init omap4_map_io(void)
{
omap44xx_map_common_io();
}
#endif
#if defined(CONFIG_SOC_OMAP5)
static struct omap_globals omap5_globals = {
.class = OMAP54XX_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE),
.ctrl = OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE),
.ctrl_pad = OMAP2_L4_IO_ADDRESS(OMAP54XX_CTRL_BASE),
.prm = OMAP2_L4_IO_ADDRESS(OMAP54XX_PRM_BASE),
.cm = OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_AON_BASE),
.cm2 = OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_BASE),
.prcm_mpu = OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE),
};
void __init omap2_set_globals_5xxx(void)
{
omap2_set_globals_tap(&omap5_globals);
omap2_set_globals_control(&omap5_globals);
omap2_set_globals_prcm(&omap5_globals);
}
void __init omap5_map_io(void)
{
omap5_map_common_io();
}
#endif
/*
* Stub function for OMAP2 so that common files
* continue to build when custom builds are used

131
arch/arm/mach-omap2/common.h
View File

@ -43,54 +43,6 @@
#define OMAP_INTC_START NR_IRQS
#ifdef CONFIG_SOC_OMAP2420
extern void omap242x_map_common_io(void);
#else
static inline void omap242x_map_common_io(void)
{
}
#endif
#ifdef CONFIG_SOC_OMAP2430
extern void omap243x_map_common_io(void);
#else
static inline void omap243x_map_common_io(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP3
extern void omap34xx_map_common_io(void);
#else
static inline void omap34xx_map_common_io(void)
{
}
#endif
#ifdef CONFIG_SOC_TI81XX
extern void omapti81xx_map_common_io(void);
#else
static inline void omapti81xx_map_common_io(void)
{
}
#endif
#ifdef CONFIG_SOC_AM33XX
extern void omapam33xx_map_common_io(void);
#else
static inline void omapam33xx_map_common_io(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP4
extern void omap44xx_map_common_io(void);
#else
static inline void omap44xx_map_common_io(void)
{
}
#endif
#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP2)
int omap2_pm_init(void);
#else
@ -127,14 +79,6 @@ static inline int omap_mux_late_init(void)
}
#endif
#ifdef CONFIG_SOC_OMAP5
extern void omap5_map_common_io(void);
#else
static inline void omap5_map_common_io(void)
{
}
#endif
extern void omap2_init_common_infrastructure(void);
extern struct sys_timer omap2_timer;
@ -167,52 +111,43 @@ void am35xx_init_late(void);
void ti81xx_init_late(void);
void omap4430_init_late(void);
int omap2_common_pm_late_init(void);
void omap_prcm_restart(char, const char *);
/*
* IO bases for various OMAP processors
* Except the tap base, rest all the io bases
* listed are physical addresses.
*/
struct omap_globals {
u32 class; /* OMAP class to detect */
void __iomem *tap; /* Control module ID code */
void __iomem *sdrc; /* SDRAM Controller */
void __iomem *sms; /* SDRAM Memory Scheduler */
void __iomem *ctrl; /* System Control Module */
void __iomem *ctrl_pad; /* PAD Control Module */
void __iomem *prm; /* Power and Reset Management */
void __iomem *cm; /* Clock Management */
void __iomem *cm2;
void __iomem *prcm_mpu;
};
void omap2_set_globals_242x(void);
void omap2_set_globals_243x(void);
void omap2_set_globals_3xxx(void);
void omap2_set_globals_443x(void);
void omap2_set_globals_5xxx(void);
void omap2_set_globals_ti81xx(void);
void omap2_set_globals_am33xx(void);
/* These get called from omap2_set_globals_xxxx(), do not call these */
void omap2_set_globals_tap(struct omap_globals *);
#if defined(CONFIG_SOC_HAS_OMAP2_SDRC)
void omap2_set_globals_sdrc(struct omap_globals *);
#if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
void omap2xxx_restart(char mode, const char *cmd);
#else
static inline void omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
{ }
static inline void omap2xxx_restart(char mode, const char *cmd)
{
}
#endif
void omap2_set_globals_control(struct omap_globals *);
void omap2_set_globals_prcm(struct omap_globals *);
void omap242x_map_io(void);
void omap243x_map_io(void);
void omap3_map_io(void);
void am33xx_map_io(void);
void omap4_map_io(void);
void omap5_map_io(void);
void ti81xx_map_io(void);
#ifdef CONFIG_ARCH_OMAP3
void omap3xxx_restart(char mode, const char *cmd);
#else
static inline void omap3xxx_restart(char mode, const char *cmd)
{
}
#endif
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
void omap44xx_restart(char mode, const char *cmd);
#else
static inline void omap44xx_restart(char mode, const char *cmd)
{
}
#endif
/* This gets called from mach-omap2/io.c, do not call this */
void __init omap2_set_globals_tap(u32 class, void __iomem *tap);
void __init omap242x_map_io(void);
void __init omap243x_map_io(void);
void __init omap3_map_io(void);
void __init am33xx_map_io(void);
void __init omap4_map_io(void);
void __init omap5_map_io(void);
void __init ti81xx_map_io(void);
/* omap_barriers_init() is OMAP4 only */
void omap_barriers_init(void);
/**

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

@ -147,13 +147,11 @@ static struct omap3_control_regs control_context;
#define OMAP_CTRL_REGADDR(reg) (omap2_ctrl_base + (reg))
#define OMAP4_CTRL_PAD_REGADDR(reg) (omap4_ctrl_pad_base + (reg))
void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
void __init omap2_set_globals_control(void __iomem *ctrl,
void __iomem *ctrl_pad)
{
if (omap2_globals->ctrl)
omap2_ctrl_base = omap2_globals->ctrl;
if (omap2_globals->ctrl_pad)
omap4_ctrl_pad_base = omap2_globals->ctrl_pad;
omap2_ctrl_base = ctrl;
omap4_ctrl_pad_base = ctrl_pad;
}
void __iomem *omap_ctrl_base_get(void)

2
arch/arm/mach-omap2/control.h
View File

@ -414,6 +414,8 @@ extern void omap_ctrl_write_dsp_boot_addr(u32 bootaddr);
extern void omap_ctrl_write_dsp_boot_mode(u8 bootmode);
extern void omap3630_ctrl_disable_rta(void);
extern int omap3_ctrl_save_padconf(void);
extern void omap2_set_globals_control(void __iomem *ctrl,
void __iomem *ctrl_pad);
#else
#define omap_ctrl_base_get() 0
#define omap_ctrl_readb(x) 0

1
arch/arm/mach-omap2/cpuidle34xx.c
View File

@ -27,7 +27,6 @@
#include <linux/export.h>
#include <linux/cpu_pm.h>
#include <plat/prcm.h>
#include "powerdomain.h"
#include "clockdomain.h"

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

@ -646,29 +646,3 @@ static int __init omap2_init_devices(void)
return 0;
}
arch_initcall(omap2_init_devices);
#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
static int __init omap_init_wdt(void)
{
int id = -1;
struct platform_device *pdev;
struct omap_hwmod *oh;
char *oh_name = "wd_timer2";
char *dev_name = "omap_wdt";
if (!cpu_class_is_omap2() || of_have_populated_dt())
return 0;
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up wd_timer%d hwmod\n", id);
return -EINVAL;
}
pdev = omap_device_build(dev_name, id, oh, NULL, 0, NULL, 0, 0);
WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
dev_name, oh->name);
return 0;
}
subsys_initcall(omap_init_wdt);
#endif

2
arch/arm/mach-omap2/display.c
View File

@ -35,6 +35,7 @@
#include "mux.h"
#include "control.h"
#include "display.h"
#include "prm.h"
#define DISPC_CONTROL 0x0040
#define DISPC_CONTROL2 0x0238
@ -512,7 +513,6 @@ static void dispc_disable_outputs(void)
}
}
#define MAX_MODULE_SOFTRESET_WAIT 10000
int omap_dss_reset(struct omap_hwmod *oh)
{
struct omap_hwmod_opt_clk *oc;

4
arch/arm/mach-omap2/hdq1w.c
View File

@ -31,11 +31,9 @@
#include "omap_device.h"
#include "hdq1w.h"
#include "prm.h"
#include "common.h"
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
/**
* omap_hdq1w_reset - reset the OMAP HDQ1W module
* @oh: struct omap_hwmod *

6
arch/arm/mach-omap2/i2c.c
View File

@ -20,10 +20,11 @@
*/
#include "soc.h"
#include "common.h"
#include "omap_hwmod.h"
#include "omap_device.h"
#include "prm.h"
#include "common.h"
#include "mux.h"
#include "i2c.h"
@ -32,9 +33,6 @@
#define OMAP2_I2C_CON_OFFSET 0x24
#define OMAP4_I2C_CON_OFFSET 0xA4
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
#define MAX_OMAP_I2C_HWMOD_NAME_LEN 16
static void __init omap2_i2c_mux_pins(int bus_id)

7
arch/arm/mach-omap2/id.c
View File

@ -559,11 +559,12 @@ void __init omap5xxx_check_revision(void)
* detect the exact revision later on in omap2_detect_revision() once map_io
* is done.
*/
void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
void __init omap2_set_globals_tap(u32 class, void __iomem *tap)
{
omap_revision = omap2_globals->class;
tap_base = omap2_globals->tap;
omap_revision = class;
tap_base = tap;
/* XXX What is this intended to do? */
if (cpu_is_omap34xx())
tap_prod_id = 0x0210;
else

86
arch/arm/mach-omap2/io.c
View File

@ -42,8 +42,15 @@
#include "clock44xx.h"
#include "omap-pm.h"
#include "sdrc.h"
#include "control.h"
#include "serial.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "prm.h"
#include "cm.h"
#include "prcm_mpu44xx.h"
#include "prminst44xx.h"
#include "cminst44xx.h"
/*
* The machine specific code may provide the extra mapping besides the
* default mapping provided here.
@ -265,7 +272,7 @@ static struct map_desc omap54xx_io_desc[] __initdata = {
#endif
#ifdef CONFIG_SOC_OMAP2420
void __init omap242x_map_common_io(void)
void __init omap242x_map_io(void)
{
iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
@ -273,7 +280,7 @@ void __init omap242x_map_common_io(void)
#endif
#ifdef CONFIG_SOC_OMAP2430
void __init omap243x_map_common_io(void)
void __init omap243x_map_io(void)
{
iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
@ -281,28 +288,28 @@ void __init omap243x_map_common_io(void)
#endif
#ifdef CONFIG_ARCH_OMAP3
void __init omap34xx_map_common_io(void)
void __init omap3_map_io(void)
{
iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
}
#endif
#ifdef CONFIG_SOC_TI81XX
void __init omapti81xx_map_common_io(void)
void __init ti81xx_map_io(void)
{
iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc));
}
#endif
#ifdef CONFIG_SOC_AM33XX
void __init omapam33xx_map_common_io(void)
void __init am33xx_map_io(void)
{
iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc));
}
#endif
#ifdef CONFIG_ARCH_OMAP4
void __init omap44xx_map_common_io(void)
void __init omap4_map_io(void)
{
iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
omap_barriers_init();
@ -310,7 +317,7 @@ void __init omap44xx_map_common_io(void)
#endif
#ifdef CONFIG_SOC_OMAP5
void __init omap5_map_common_io(void)
void __init omap5_map_io(void)
{
iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc));
}
@ -377,8 +384,15 @@ static void __init omap_hwmod_init_postsetup(void)
#ifdef CONFIG_SOC_OMAP2420
void __init omap2420_init_early(void)
{
omap2_set_globals_242x();
omap2_set_globals_tap(OMAP242X_CLASS, OMAP2_L4_IO_ADDRESS(0x48014000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP242X_CTRL_BASE),
NULL);
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP2420_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP2420_CM_BASE), NULL);
omap2xxx_check_revision();
omap2xxx_cm_init();
omap_common_init_early();
omap2xxx_voltagedomains_init();
omap242x_powerdomains_init();
@ -399,8 +413,15 @@ void __init omap2420_init_late(void)
#ifdef CONFIG_SOC_OMAP2430
void __init omap2430_init_early(void)
{
omap2_set_globals_243x();
omap2_set_globals_tap(OMAP243X_CLASS, OMAP2_L4_IO_ADDRESS(0x4900a000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE),
NULL);
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP2430_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP2430_CM_BASE), NULL);
omap2xxx_check_revision();
omap2xxx_cm_init();
omap_common_init_early();
omap2xxx_voltagedomains_init();
omap243x_powerdomains_init();
@ -425,9 +446,16 @@ void __init omap2430_init_late(void)
#ifdef CONFIG_ARCH_OMAP3
void __init omap3_init_early(void)
{
omap2_set_globals_3xxx();
omap2_set_globals_tap(OMAP343X_CLASS, OMAP2_L4_IO_ADDRESS(0x4830A000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE),
NULL);
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE), NULL);
omap3xxx_check_revision();
omap3xxx_check_features();
omap3xxx_cm_init();
omap_common_init_early();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
@ -459,7 +487,12 @@ void __init am35xx_init_early(void)
void __init ti81xx_init_early(void)
{
omap2_set_globals_ti81xx();
omap2_set_globals_tap(OMAP343X_CLASS,
OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
NULL);
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);
omap3xxx_check_revision();
ti81xx_check_features();
omap_common_init_early();
@ -517,7 +550,12 @@ void __init ti81xx_init_late(void)
#ifdef CONFIG_SOC_AM33XX
void __init am33xx_init_early(void)
{
omap2_set_globals_am33xx();
omap2_set_globals_tap(AM335X_CLASS,
AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
omap2_set_globals_control(AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE),
NULL);
omap2_set_globals_prm(AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE));
omap2_set_globals_cm(AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE), NULL);
omap3xxx_check_revision();
ti81xx_check_features();
omap_common_init_early();
@ -533,7 +571,16 @@ void __init am33xx_init_early(void)
#ifdef CONFIG_ARCH_OMAP4
void __init omap4430_init_early(void)
{
omap2_set_globals_443x();
omap2_set_globals_tap(OMAP443X_CLASS,
OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE),
OMAP2_L4_IO_ADDRESS(OMAP443X_CTRL_BASE));
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP4430_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP4430_CM_BASE),
OMAP2_L4_IO_ADDRESS(OMAP4430_CM2_BASE));
omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP4430_PRCM_MPU_BASE));
omap_prm_base_init();
omap_cm_base_init();
omap4xxx_check_revision();
omap4xxx_check_features();
omap_common_init_early();
@ -556,7 +603,16 @@ void __init omap4430_init_late(void)
#ifdef CONFIG_SOC_OMAP5
void __init omap5_init_early(void)
{
omap2_set_globals_5xxx();
omap2_set_globals_tap(OMAP54XX_CLASS,
OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE),
OMAP2_L4_IO_ADDRESS(OMAP54XX_CTRL_BASE));
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_AON_BASE),
OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_BASE));
omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE));
omap_prm_base_init();
omap_cm_base_init();
omap5xxx_check_revision();
omap_common_init_early();
}

2
arch/arm/mach-omap2/mcbsp.c
View File

@ -29,7 +29,7 @@
* FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle.
* Sidetone needs non-gated ICLK and sidetone autoidle is broken.
*/
#include "cm2xxx_3xxx.h"
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"
static int omap3_enable_st_clock(unsigned int id, bool enable)

4
arch/arm/mach-omap2/msdi.c
View File

@ -25,6 +25,7 @@
#include <linux/err.h>
#include <linux/platform_data/gpio-omap.h>
#include "prm.h"
#include "common.h"
#include "control.h"
#include "omap_hwmod.h"
@ -43,9 +44,6 @@
#define MSDI_CON_CLKD_MASK (0x3f << 0)
#define MSDI_CON_CLKD_SHIFT 0
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
/* MSDI_TARGET_RESET_CLKD: clock divisor to use throughout the reset */
#define MSDI_TARGET_RESET_CLKD 0x3ff

65
arch/arm/mach-omap2/omap2-restart.c Normal file
View File

@ -0,0 +1,65 @@
/*
* omap2-restart.c - code common to all OMAP2xxx machines.
*
* Copyright (C) 2012 Texas Instruments
* Paul Walmsley
*
* 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 "common.h"
#include "prm2xxx.h"
/*
* reset_virt_prcm_set_ck, reset_sys_ck: pointers to the virt_prcm_set
* clock and the sys_ck. Used during the reset process
*/
static struct clk *reset_virt_prcm_set_ck, *reset_sys_ck;
/* Reboot handling */
/**
* omap2xxx_restart - Set DPLL to bypass mode for reboot to work
*
* Set the DPLL to bypass so that reboot completes successfully. No
* return value.
*/
void omap2xxx_restart(char mode, const char *cmd)
{
u32 rate;
rate = clk_get_rate(reset_sys_ck);
clk_set_rate(reset_virt_prcm_set_ck, rate);
/* XXX Should save the cmd argument for use after the reboot */
omap2xxx_prm_dpll_reset(); /* never returns */
while (1);
}
/**
* omap2xxx_common_look_up_clks_for_reset - look up clocks needed for restart
*
* Some clocks need to be looked up in advance for the SoC restart
* operation to work - see omap2xxx_restart(). Returns -EINVAL upon
* error or 0 upon success.
*/
static int __init omap2xxx_common_look_up_clks_for_reset(void)
{
reset_virt_prcm_set_ck = clk_get(NULL, "virt_prcm_set");
if (IS_ERR(reset_virt_prcm_set_ck))
return -EINVAL;
reset_sys_ck = clk_get(NULL, "sys_ck");
if (IS_ERR(reset_sys_ck))
return -EINVAL;
return 0;
}
core_initcall(omap2xxx_common_look_up_clks_for_reset);

36
arch/arm/mach-omap2/omap3-restart.c Normal file
View File

@ -0,0 +1,36 @@
/*
* omap3-restart.c - Code common to all OMAP3xxx machines.
*
* Copyright (C) 2009, 2012 Texas Instruments
* Copyright (C) 2010 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
* 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 "iomap.h"
#include "common.h"
#include "control.h"
#include "prm3xxx.h"
/* Global address base setup code */
/**
* omap3xxx_restart - trigger a software restart of the SoC
* @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
* @cmd: passed from the userspace program rebooting the system (if provided)
*
* Resets the SoC. For @cmd, see the 'reboot' syscall in
* kernel/sys.c. No return value.
*/
void omap3xxx_restart(char mode, const char *cmd)
{
omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
omap3xxx_prm_dpll3_reset(); /* never returns */
while (1);
}

19
arch/arm/mach-omap2/omap4-common.c
View File

@ -29,9 +29,12 @@
#include "omap-wakeupgen.h"
#include "soc.h"
#include "iomap.h"
#include "common.h"
#include "mmc.h"
#include "hsmmc.h"
#include "prminst44xx.h"
#include "prcm_mpu44xx.h"
#include "omap4-sar-layout.h"
#include "omap-secure.h"
@ -280,3 +283,19 @@ int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
return 0;
}
#endif
/**
* omap44xx_restart - trigger a software restart of the SoC
* @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
* @cmd: passed from the userspace program rebooting the system (if provided)
*
* Resets the SoC. For @cmd, see the 'reboot' syscall in
* kernel/sys.c. No return value.
*/
void omap44xx_restart(char mode, const char *cmd)
{
/* XXX Should save 'cmd' into scratchpad for use after reboot */
omap4_prminst_global_warm_sw_reset(); /* never returns */
while (1);
}

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

@ -141,7 +141,6 @@
#include "clock.h"
#include "omap_hwmod.h"
#include <plat/prcm.h>
#include "soc.h"
#include "common.h"
@ -151,6 +150,7 @@
#include "cm3xxx.h"
#include "cminst44xx.h"
#include "cm33xx.h"
#include "prm.h"
#include "prm3xxx.h"
#include "prm44xx.h"
#include "prm33xx.h"
@ -158,9 +158,6 @@
#include "mux.h"
#include "pm.h"
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
/* Name of the OMAP hwmod for the MPU */
#define MPU_INITIATOR_NAME "mpu"
@ -2064,7 +2061,8 @@ static int _enable(struct omap_hwmod *oh)
_enable_sysc(oh);
}
} else {
_omap4_disable_module(oh);
if (soc_ops.disable_module)
soc_ops.disable_module(oh);
_disable_clocks(oh);
pr_debug("omap_hwmod: %s: _wait_target_ready: %d\n",
oh->name, r);

1
arch/arm/mach-omap2/pm34xx.c
View File

@ -37,7 +37,6 @@
#include "clockdomain.h"
#include "powerdomain.h"
#include <plat/prcm.h>
#include <plat-omap/dma-omap.h>
#include "../plat-omap/sram.h"

2
arch/arm/mach-omap2/powerdomain.c
View File

@ -29,8 +29,6 @@
#include <asm/cpu.h>
#include <plat/prcm.h>
#include "powerdomain.h"
#include "clockdomain.h"

22
arch/arm/mach-omap2/prcm-common.h
View File

@ -406,11 +406,6 @@
#define OMAP3430_EN_CORE_MASK (1 << 0)
/*
* MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
* submodule to exit hardreset
*/
#define MAX_MODULE_HARDRESET_WAIT 10000
/*
* Maximum time(us) it takes to output the signal WUCLKOUT of the last
@ -419,24 +414,7 @@
* microseconds on OMAP4, so this timeout may be too high.
*/
#define MAX_IOPAD_LATCH_TIME 100
# ifndef __ASSEMBLER__
extern void __iomem *prm_base;
extern void __iomem *cm_base;
extern void __iomem *cm2_base;
extern void __iomem *prcm_mpu_base;
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
extern void omap_prm_base_init(void);
extern void omap_cm_base_init(void);
#else
static inline void omap_prm_base_init(void)
{
}
static inline void omap_cm_base_init(void)
{
}
#endif
/**
* struct omap_prcm_irq - describes a PRCM interrupt bit

189
arch/arm/mach-omap2/prcm.c
View File

@ -1,189 +0,0 @@
/*
* linux/arch/arm/mach-omap2/prcm.c
*
* OMAP 24xx Power Reset and Clock Management (PRCM) functions
*
* Copyright (C) 2005 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
*
* Copyright (C) 2007 Texas Instruments, Inc.
* Rajendra Nayak <rnayak@ti.com>
*
* Some pieces of code Copyright (C) 2005 Texas Instruments, Inc.
* Upgraded with OMAP4 support by Abhijit Pagare <abhijitpagare@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 <linux/delay.h>
#include <linux/export.h>
#include "common.h"
#include <plat/prcm.h>
#include "soc.h"
#include "clock.h"
#include "clock2xxx.h"
#include "cm2xxx_3xxx.h"
#include "prm2xxx_3xxx.h"
#include "prm44xx.h"
#include "prminst44xx.h"
#include "cminst44xx.h"
#include "prm-regbits-24xx.h"
#include "prm-regbits-44xx.h"
#include "control.h"
void __iomem *prm_base;
void __iomem *cm_base;
void __iomem *cm2_base;
void __iomem *prcm_mpu_base;
#define MAX_MODULE_ENABLE_WAIT 100000
u32 omap_prcm_get_reset_sources(void)
{
/* XXX This presumably needs modification for 34XX */
if (cpu_is_omap24xx() || cpu_is_omap34xx())
return omap2_prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTST) & 0x7f;
if (cpu_is_omap44xx())
return omap2_prm_read_mod_reg(WKUP_MOD, OMAP4_RM_RSTST) & 0x7f;
return 0;
}
EXPORT_SYMBOL(omap_prcm_get_reset_sources);
/* Resets clock rates and reboots the system. Only called from system.h */
void omap_prcm_restart(char mode, const char *cmd)
{
s16 prcm_offs = 0;
if (cpu_is_omap24xx()) {
omap2xxx_clk_prepare_for_reboot();
prcm_offs = WKUP_MOD;
} else if (cpu_is_omap34xx()) {
prcm_offs = OMAP3430_GR_MOD;
omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
} else if (cpu_is_omap44xx()) {
omap4_prminst_global_warm_sw_reset(); /* never returns */
} else {
WARN_ON(1);
}
/*
* As per Errata i520, in some cases, user will not be able to
* access DDR memory after warm-reset.
* This situation occurs while the warm-reset happens during a read
* access to DDR memory. In that particular condition, DDR memory
* does not respond to a corrupted read command due to the warm
* reset occurrence but SDRC is waiting for read completion.
* SDRC is not sensitive to the warm reset, but the interconnect is
* reset on the fly, thus causing a misalignment between SDRC logic,
* interconnect logic and DDR memory state.
* WORKAROUND:
* Steps to perform before a Warm reset is trigged:
* 1. enable self-refresh on idle request
* 2. put SDRC in idle
* 3. wait until SDRC goes to idle
* 4. generate SW reset (Global SW reset)
*
* Steps to be performed after warm reset occurs (in bootloader):
* if HW warm reset is the source, apply below steps before any
* accesses to SDRAM:
* 1. Reset SMS and SDRC and wait till reset is complete
* 2. Re-initialize SMS, SDRC and memory
*
* NOTE: Above work around is required only if arch reset is implemented
* using Global SW reset(GLOBAL_SW_RST). DPLL3 reset does not need
* the WA since it resets SDRC as well as part of cold reset.
*/
/* XXX should be moved to some OMAP2/3 specific code */
omap2_prm_set_mod_reg_bits(OMAP_RST_DPLL3_MASK, prcm_offs,
OMAP2_RM_RSTCTRL);
omap2_prm_read_mod_reg(prcm_offs, OMAP2_RM_RSTCTRL); /* OCP barrier */
}
/**
* omap2_cm_wait_idlest - wait for IDLEST bit to indicate module readiness
* @reg: physical address of module IDLEST register
* @mask: value to mask against to determine if the module is active
* @idlest: idle state indicator (0 or 1) for the clock
* @name: name of the clock (for printk)
*
* Returns 1 if the module indicated readiness in time, or 0 if it
* failed to enable in roughly MAX_MODULE_ENABLE_WAIT microseconds.
*
* XXX This function is deprecated. It should be removed once the
* hwmod conversion is complete.
*/
int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
const char *name)
{
int i = 0;
int ena = 0;
if (idlest)
ena = 0;
else
ena = mask;
/* Wait for lock */
omap_test_timeout(((__raw_readl(reg) & mask) == ena),
MAX_MODULE_ENABLE_WAIT, i);
if (i < MAX_MODULE_ENABLE_WAIT)
pr_debug("cm: Module associated with clock %s ready after %d loops\n",
name, i);
else
pr_err("cm: Module associated with clock %s didn't enable in %d tries\n",
name, MAX_MODULE_ENABLE_WAIT);
return (i < MAX_MODULE_ENABLE_WAIT) ? 1 : 0;
};
void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals)
{
if (omap2_globals->prm)
prm_base = omap2_globals->prm;
if (omap2_globals->cm)
cm_base = omap2_globals->cm;
if (omap2_globals->cm2)
cm2_base = omap2_globals->cm2;
if (omap2_globals->prcm_mpu)
prcm_mpu_base = omap2_globals->prcm_mpu;
if (cpu_is_omap44xx() || soc_is_omap54xx()) {
omap_prm_base_init();
omap_cm_base_init();
}
}
/*
* Stubbed functions so that common files continue to build when
* custom builds are used
* XXX These are temporary and should be removed at the earliest possible
* opportunity
*/
int __weak omap4_cminst_wait_module_idle(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
return 0;
}
void __weak omap4_cminst_module_enable(u8 mode, u8 part, u16 inst,
s16 cdoffs, u16 clkctrl_offs)
{
}
void __weak omap4_cminst_module_disable(u8 part, u16 inst, s16 cdoffs,
u16 clkctrl_offs)
{
}

17
arch/arm/mach-omap2/prcm_mpu44xx.c
View File

@ -20,6 +20,12 @@
#include "prcm_mpu44xx.h"
#include "cm-regbits-44xx.h"
/*
* prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP
* block registers
*/
void __iomem *prcm_mpu_base;
/* PRCM_MPU low-level functions */
u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
@ -43,3 +49,14 @@ u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
return v;
}
/**
* omap2_set_globals_prcm_mpu - set the MPU PRCM base address (for early use)
* @prcm_mpu: PRCM_MPU base virtual address
*
* XXX Will be replaced when the PRM/CM drivers are completed.
*/
void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
{
prcm_mpu_base = prcm_mpu;
}

9
arch/arm/mach-omap2/prcm_mpu44xx.h
View File

@ -1,7 +1,7 @@
/*
* OMAP44xx PRCM MPU instance offset macros
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Copyright (C) 2010, 2012 Texas Instruments, Inc.
* Copyright (C) 2010 Nokia Corporation
*
* Paul Walmsley (paul@pwsan.com)
@ -25,6 +25,12 @@
#ifndef __ARCH_ARM_MACH_OMAP2_PRCM_MPU44XX_H
#define __ARCH_ARM_MACH_OMAP2_PRCM_MPU44XX_H
#include "common.h"
# ifndef __ASSEMBLER__
extern void __iomem *prcm_mpu_base;
# endif
#define OMAP4430_PRCM_MPU_BASE 0x48243000
#define OMAP44XX_PRCM_MPU_REGADDR(inst, reg) \
@ -98,6 +104,7 @@ extern u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 idx);
extern void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 idx);
extern u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst,
s16 idx);
extern void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu);
# endif
#endif

24
arch/arm/mach-omap2/prm.h
View File

@ -1,7 +1,7 @@
/*
* OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
*
* Copyright (C) 2007-2009 Texas Instruments, Inc.
* Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
* Copyright (C) 2010 Nokia Corporation
*
* Paul Walmsley
@ -15,6 +15,28 @@
#include "prcm-common.h"
# ifndef __ASSEMBLER__
extern void __iomem *prm_base;
extern void omap2_set_globals_prm(void __iomem *prm);
# endif
/*
* MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
* module to softreset
*/
#define MAX_MODULE_SOFTRESET_WAIT 10000
/*
* MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
* submodule to exit hardreset
*/
#define MAX_MODULE_HARDRESET_WAIT 10000
/*
* Register bitfields
*/
/*
* 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
*

15
arch/arm/mach-omap2/prm2xxx.c
View File

@ -20,7 +20,6 @@
#include "common.h"
#include <plat/cpu.h>
#include <plat/prcm.h>
#include "vp.h"
#include "powerdomain.h"
@ -69,6 +68,20 @@ static u32 omap2xxx_prm_read_reset_sources(void)
return r;
}
/**
* omap2xxx_prm_dpll_reset - use DPLL reset to reboot the OMAP SoC
*
* Set the DPLL reset bit, which should reboot the SoC. This is the
* recommended way to restart the SoC. No return value.
*/
void omap2xxx_prm_dpll_reset(void)
{
omap2_prm_set_mod_reg_bits(OMAP_RST_DPLL3_MASK, WKUP_MOD,
OMAP2_RM_RSTCTRL);
/* OCP barrier */
omap2_prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTCTRL);
}
int omap2xxx_clkdm_sleep(struct clockdomain *clkdm)
{
omap2_prm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,

2
arch/arm/mach-omap2/prm2xxx.h
View File

@ -124,6 +124,8 @@
extern int omap2xxx_clkdm_sleep(struct clockdomain *clkdm);
extern int omap2xxx_clkdm_wakeup(struct clockdomain *clkdm);
extern void omap2xxx_prm_dpll_reset(void);
extern int __init prm2xxx_init(void);
extern int __exit prm2xxx_exit(void);

7
arch/arm/mach-omap2/prm2xxx_3xxx.h
View File

@ -241,11 +241,4 @@ extern int omap2_clkdm_clear_all_wkdeps(struct clockdomain *clkdm);
#define OMAP_LOGICRETSTATE_MASK (1 << 2)
/*
* MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
* submodule to exit hardreset
*/
#define MAX_MODULE_HARDRESET_WAIT 10000
#endif

16
arch/arm/mach-omap2/prm3xxx.c
View File

@ -20,7 +20,6 @@
#include "common.h"
#include <plat/cpu.h>
#include <plat/prcm.h>
#include "vp.h"
#include "powerdomain.h"
@ -122,6 +121,21 @@ u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset)
return omap2_prm_rmw_mod_reg_bits(mask, bits, OMAP3430_GR_MOD, offset);
}
/**
* omap3xxx_prm_dpll3_reset - use DPLL3 reset to reboot the OMAP SoC
*
* Set the DPLL3 reset bit, which should reboot the SoC. This is the
* recommended way to restart the SoC, considering Errata i520. No
* return value.
*/
void omap3xxx_prm_dpll3_reset(void)
{
omap2_prm_set_mod_reg_bits(OMAP_RST_DPLL3_MASK, OMAP3430_GR_MOD,
OMAP2_RM_RSTCTRL);
/* OCP barrier */
omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP2_RM_RSTCTRL);
}
/**
* omap3xxx_prm_read_pending_irqs - read pending PRM MPU IRQs into @events
* @events: ptr to a u32, preallocated by caller

2
arch/arm/mach-omap2/prm3xxx.h
View File

@ -152,6 +152,8 @@ extern void omap3xxx_prm_ocp_barrier(void);
extern void omap3xxx_prm_save_and_clear_irqen(u32 *saved_mask);
extern void omap3xxx_prm_restore_irqen(u32 *saved_mask);
extern void omap3xxx_prm_dpll3_reset(void);
extern u32 omap3xxx_prm_get_reset_sources(void);
#endif /* __ASSEMBLER */

1
arch/arm/mach-omap2/prm44xx.c
View File

@ -18,7 +18,6 @@
#include <linux/err.h>
#include <linux/io.h>
#include <plat/prcm.h>
#include "soc.h"
#include "iomap.h"

16
arch/arm/mach-omap2/prm_common.c
View File

@ -25,12 +25,12 @@
#include <linux/slab.h>
#include "../plat-omap/common.h"
#include <plat/prcm.h>
#include "prm2xxx_3xxx.h"
#include "prm2xxx.h"
#include "prm3xxx.h"
#include "prm44xx.h"
#include "common.h"
/*
* OMAP_PRCM_MAX_NR_PENDING_REG: maximum number of PRM_IRQ*_MPU regs
@ -55,6 +55,9 @@ static struct irq_chip_generic **prcm_irq_chips;
*/
static struct omap_prcm_irq_setup *prcm_irq_setup;
/* prm_base: base virtual address of the PRM IP block */
void __iomem *prm_base;
/*
* prm_ll_data: function pointers to SoC-specific implementations of
* common PRM functions
@ -328,6 +331,17 @@ err:
return -ENOMEM;
}
/**
* omap2_set_globals_prm - set the PRM base address (for early use)
* @prm: PRM base virtual address
*
* XXX Will be replaced when the PRM/CM drivers are completed.
*/
void __init omap2_set_globals_prm(void __iomem *prm)
{
prm_base = prm;
}
/**
* prm_read_reset_sources - return the sources of the SoC's last reset
*

2
arch/arm/mach-omap2/prminst44xx.h
View File

@ -30,4 +30,6 @@ extern int omap4_prminst_assert_hardreset(u8 shift, u8 part, s16 inst,
extern int omap4_prminst_deassert_hardreset(u8 shift, u8 part, s16 inst,
u16 rstctrl_offs);
extern void omap_prm_base_init(void);
#endif

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

@ -114,12 +114,10 @@ int omap2_sdrc_get_params(unsigned long r,
}
void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
void __init omap2_set_globals_sdrc(void __iomem *sdrc, void __iomem *sms)
{
if (omap2_globals->sdrc)
omap2_sdrc_base = omap2_globals->sdrc;
if (omap2_globals->sms)
omap2_sms_base = omap2_globals->sms;
omap2_sdrc_base = sdrc;
omap2_sms_base = sms;
}
/**

2
arch/arm/mach-omap2/sdrc.h
View File

@ -51,6 +51,8 @@ static inline u32 sms_read_reg(u16 reg)
return __raw_readl(OMAP_SMS_REGADDR(reg));
}
extern void omap2_set_globals_sdrc(void __iomem *sdrc, void __iomem *sms);
/**
* struct omap_sdrc_params - SDRC parameters for a given SDRC clock rate

9
arch/arm/mach-omap2/ti81xx.h
View File

@ -22,6 +22,15 @@
#define TI81XX_CTRL_BASE TI81XX_SCM_BASE
#define TI81XX_PRCM_BASE 0x48180000
/*
* Adjust TAP register base such that omap3_check_revision accesses the correct
* TI81XX register for checking device ID (it adds 0x204 to tap base while
* TI81XX DEVICE ID register is at offset 0x600 from control base).
*/
#define TI81XX_TAP_BASE (TI81XX_CTRL_BASE + \
TI81XX_CONTROL_DEVICE_ID - 0x204)
#define TI81XX_ARM_INTC_BASE 0x48200000
#endif /* __ASM_ARCH_TI81XX_H */

40
arch/arm/mach-omap2/wd_timer.c
View File

@ -1,6 +1,8 @@
/*
* OMAP2+ MPU WD_TIMER-specific code
*
* Copyright (C) 2012 Texas Instruments, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@ -11,10 +13,14 @@
#include <linux/io.h>
#include <linux/err.h>
#include "omap_hwmod.h"
#include <linux/platform_data/omap-wd-timer.h>
#include "omap_hwmod.h"
#include "omap_device.h"
#include "wd_timer.h"
#include "common.h"
#include "prm.h"
#include "soc.h"
/*
* In order to avoid any assumptions from bootloader regarding WDT
@ -26,9 +32,6 @@
#define OMAP_WDT_WPS 0x34
#define OMAP_WDT_SPR 0x48
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
int omap2_wd_timer_disable(struct omap_hwmod *oh)
{
void __iomem *base;
@ -99,3 +102,32 @@ int omap2_wd_timer_reset(struct omap_hwmod *oh)
return (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT :
omap2_wd_timer_disable(oh);
}
static int __init omap_init_wdt(void)
{
int id = -1;
struct platform_device *pdev;
struct omap_hwmod *oh;
char *oh_name = "wd_timer2";
char *dev_name = "omap_wdt";
struct omap_wd_timer_platform_data pdata;
if (!cpu_class_is_omap2() || of_have_populated_dt())
return 0;
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up wd_timer%d hwmod\n", id);
return -EINVAL;
}
pdata.read_reset_sources = prm_read_reset_sources;
pdev = omap_device_build(dev_name, id, oh, &pdata,
sizeof(struct omap_wd_timer_platform_data),
NULL, 0, 0);
WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
dev_name, oh->name);
return 0;
}
subsys_initcall(omap_init_wdt);

37
arch/arm/plat-omap/include/plat/prcm.h
View File

@ -1,37 +0,0 @@
/*
* arch/arm/plat-omap/include/mach/prcm.h
*
* Access definations for use in OMAP24XX clock and power management
*
* Copyright (C) 2005 Texas Instruments, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* XXX This file is deprecated. The PRCM is an OMAP2+-only subsystem,
* so this file doesn't belong in plat-omap/include/plat. Please
* do not add anything new to this file.
*/
#ifndef __ASM_ARM_ARCH_OMAP_PRCM_H
#define __ASM_ARM_ARCH_OMAP_PRCM_H
u32 omap_prcm_get_reset_sources(void);
int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
const char *name);
#endif

26
drivers/watchdog/omap_wdt.c
View File

@ -46,8 +46,8 @@
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <mach/hardware.h>
#include <plat/cpu.h>
#include <plat/prcm.h>
#include <linux/platform_data/omap-wd-timer.h>
#include "omap_wdt.h"
@ -202,8 +202,10 @@ static ssize_t omap_wdt_write(struct file *file, const char __user *data,
static long omap_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct omap_wd_timer_platform_data *pdata;
struct omap_wdt_dev *wdev;
int new_margin;
u32 rs;
int new_margin, bs;
static const struct watchdog_info ident = {
.identity = "OMAP Watchdog",
.options = WDIOF_SETTIMEOUT,
@ -211,6 +213,7 @@ static long omap_wdt_ioctl(struct file *file, unsigned int cmd,
};
wdev = file->private_data;
pdata = wdev->dev->platform_data;
switch (cmd) {
case WDIOC_GETSUPPORT:
@ -219,17 +222,12 @@ static long omap_wdt_ioctl(struct file *file, unsigned int cmd,
case WDIOC_GETSTATUS:
return put_user(0, (int __user *)arg);
case WDIOC_GETBOOTSTATUS:
#ifdef CONFIG_ARCH_OMAP1
if (cpu_is_omap16xx())
return put_user(__raw_readw(ARM_SYSST),
(int __user *)arg);
#endif
#ifdef CONFIG_ARCH_OMAP2PLUS
if (cpu_is_omap24xx())
return put_user(omap_prcm_get_reset_sources(),
(int __user *)arg);
#endif
return put_user(0, (int __user *)arg);
if (!pdata || !pdata->read_reset_sources)
return put_user(0, (int __user *)arg);
rs = pdata->read_reset_sources();
bs = (rs & (1 << OMAP_MPU_WD_RST_SRC_ID_SHIFT)) ?
WDIOF_CARDRESET : 0;
return put_user(bs, (int __user *)arg);
case WDIOC_KEEPALIVE:
spin_lock(&wdt_lock);
omap_wdt_ping(wdev);

38
include/linux/platform_data/omap-wd-timer.h Normal file
View File

@ -0,0 +1,38 @@
/*
* OMAP2+ WDTIMER-specific function prototypes
*
* Copyright (C) 2012 Texas Instruments, Inc.
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_PLATFORM_DATA_OMAP_WD_TIMER_H
#define __LINUX_PLATFORM_DATA_OMAP_WD_TIMER_H
#include <linux/types.h>
/*
* Standardized OMAP reset source bits
*
* This is a subset of the ones listed in arch/arm/mach-omap2/prm.h
* and are the only ones needed in the watchdog driver.
*/
#define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3
/**
* struct omap_wd_timer_platform_data - WDTIMER integration to the host SoC
* @read_reset_sources - fn ptr for the SoC to indicate the last reset cause
*
* The function pointed to by @read_reset_sources must return its data
* in a standard format - search for RST_SRC_ID_SHIFT in
* arch/arm/mach-omap2
*/
struct omap_wd_timer_platform_data {
u32 (*read_reset_sources)(void);
};
#endif