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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 06:13:58 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 06:13:58 +0300 |
commit | 01539ba2a706ab7d35fc0667dff919ade7f87d63 (patch) | |
tree | 5a4bd0cf78007d06690fe4ac06bbd49a5a70bc47 /arch/arm/mach-omap2/prm2xxx_3xxx.c | |
parent | 9e9bc9736756f25d6c47b4eba0ebf25b20a6f153 (diff) | |
parent | dc69d1af9e8d9cbbabff88bb35a6782187a22229 (diff) | |
download | linux-01539ba2a706ab7d35fc0667dff919ade7f87d63.tar.xz |
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (243 commits)
omap2: Make OMAP2PLUS select OMAP_DM_TIMER
OMAP4: hwmod data: Fix alignment and end of line in structurefields
OMAP4: hwmod data: Move the DMA structures
OMAP4: hwmod data: Move the smartreflex structures
OMAP4: hwmod data: Fix missing SIDLE_SMART_WKUP in smartreflexsysc
arm: omap: tusb6010: add name for MUSB IRQ
arm: omap: craneboard: Add USB EHCI support
omap2+: Initialize serial port for dynamic remuxing for n8x0
omap2+: Add struct omap_board_data and use it for platform level serial init
omap2+: Allow hwmod state changes to mux pads based on the state changes
omap2+: Add support for hwmod specific muxing of devices
omap2+: Add omap_mux_get_by_name
OMAP2: PM: fix compile error when !CONFIG_SUSPEND
MAINTAINERS: OMAP: hwmod: update hwmod code, data maintainership
OMAP4: Smartreflex framework extensions
OMAP4: hwmod: Add inital data for smartreflex modules.
OMAP4: PM: Program correct init voltages for scalable VDDs
OMAP4: Adding voltage driver support
OMAP4: Register voltage PMIC parameters with the voltage layer
OMAP3: PM: Program correct init voltages for VDD1 and VDD2
...
Fix up trivial conflict in arch/arm/plat-omap/Kconfig
Diffstat (limited to 'arch/arm/mach-omap2/prm2xxx_3xxx.c')
-rw-r--r-- | arch/arm/mach-omap2/prm2xxx_3xxx.c | 64 |
1 files changed, 55 insertions, 9 deletions
diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c index 421771eee450..ec0362574b5e 100644 --- a/arch/arm/mach-omap2/prm2xxx_3xxx.c +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c @@ -12,18 +12,65 @@ */ #include <linux/kernel.h> -#include <linux/delay.h> #include <linux/errno.h> #include <linux/err.h> +#include <linux/io.h> #include <plat/common.h> #include <plat/cpu.h> #include <plat/prcm.h> -#include "prm.h" +#include "prm2xxx_3xxx.h" +#include "cm2xxx_3xxx.h" #include "prm-regbits-24xx.h" #include "prm-regbits-34xx.h" +u32 omap2_prm_read_mod_reg(s16 module, u16 idx) +{ + return __raw_readl(prm_base + module + idx); +} + +void omap2_prm_write_mod_reg(u32 val, s16 module, u16 idx) +{ + __raw_writel(val, prm_base + module + idx); +} + +/* Read-modify-write a register in a PRM module. Caller must lock */ +u32 omap2_prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx) +{ + u32 v; + + v = omap2_prm_read_mod_reg(module, idx); + v &= ~mask; + v |= bits; + omap2_prm_write_mod_reg(v, module, idx); + + return v; +} + +/* Read a PRM register, AND it, and shift the result down to bit 0 */ +u32 omap2_prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask) +{ + u32 v; + + v = omap2_prm_read_mod_reg(domain, idx); + v &= mask; + v >>= __ffs(mask); + + return v; +} + +u32 omap2_prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx) +{ + return omap2_prm_rmw_mod_reg_bits(bits, bits, module, idx); +} + +u32 omap2_prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx) +{ + return omap2_prm_rmw_mod_reg_bits(bits, 0x0, module, idx); +} + + /** * omap2_prm_is_hardreset_asserted - read the HW reset line state of * submodules contained in the hwmod module @@ -39,7 +86,7 @@ int omap2_prm_is_hardreset_asserted(s16 prm_mod, u8 shift) if (!(cpu_is_omap24xx() || cpu_is_omap34xx())) return -EINVAL; - return prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTCTRL, + return omap2_prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTCTRL, (1 << shift)); } @@ -63,7 +110,7 @@ int omap2_prm_assert_hardreset(s16 prm_mod, u8 shift) return -EINVAL; mask = 1 << shift; - prm_rmw_mod_reg_bits(mask, mask, prm_mod, OMAP2_RM_RSTCTRL); + omap2_prm_rmw_mod_reg_bits(mask, mask, prm_mod, OMAP2_RM_RSTCTRL); return 0; } @@ -93,18 +140,17 @@ int omap2_prm_deassert_hardreset(s16 prm_mod, u8 shift) mask = 1 << shift; /* Check the current status to avoid de-asserting the line twice */ - if (prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTCTRL, mask) == 0) + if (omap2_prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTCTRL, mask) == 0) return -EEXIST; /* Clear the reset status by writing 1 to the status bit */ - prm_rmw_mod_reg_bits(0xffffffff, mask, prm_mod, OMAP2_RM_RSTST); + omap2_prm_rmw_mod_reg_bits(0xffffffff, mask, prm_mod, OMAP2_RM_RSTST); /* de-assert the reset control line */ - prm_rmw_mod_reg_bits(mask, 0, prm_mod, OMAP2_RM_RSTCTRL); + omap2_prm_rmw_mod_reg_bits(mask, 0, prm_mod, OMAP2_RM_RSTCTRL); /* wait the status to be set */ - omap_test_timeout(prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTST, + omap_test_timeout(omap2_prm_read_mod_bits_shift(prm_mod, OMAP2_RM_RSTST, mask), MAX_MODULE_HARDRESET_WAIT, c); return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0; } - |