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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 11:51:39 -0800 | 
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 11:51:39 -0800 | 
| commit | d01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (patch) | |
| tree | 02ef82b2740cf93a98199eded5ef765fa6e03052 /arch/arm/mach-omap2/cm3xxx.c | |
| parent | 8287361abca36504da813638310d2547469283eb (diff) | |
| parent | 794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (diff) | |
| download | olio-linux-3.10-d01e4afdbb65e030fd6f1f96c30a558e2eb0f279.tar.xz olio-linux-3.10-d01e4afdbb65e030fd6f1f96c30a558e2eb0f279.zip  | |
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson:
 "Cleanup patches for various ARM platforms and some of their associated
  drivers.  There's also a branch in here that enables Freescale i.MX to
  be part of the multiplatform support -- the first "big" SoC that is
  moved over (more multiplatform work comes in a separate branch later
  during the merge window)."
Conflicts fixed as per Olof, including a silent semantic one in
arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to
omap3xxx_restart(), and a new user of the old name was added).
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits)
  ARM: omap: fix typo on timer cleanup
  ARM: EXYNOS: Remove unused regs-mem.h file
  ARM: EXYNOS: Remove unused non-dt support for dwmci controller
  ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan
  ARM: OMAP3: cm-t3517: use GPTIMER for system clock
  ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER
  ARM: SAMSUNG: use devm_ functions for ADC driver
  ARM: EXYNOS: no duplicate mask/unmask in eint0_15
  ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443
  ARM: EXYNOS: Remove i2c0 resource information and setting of device names
  ARM: Kirkwood: checkpatch cleanups
  ARM: Kirkwood: Fix sparse warnings.
  ARM: Kirkwood: Remove unused includes
  ARM: kirkwood: cleanup lsxl board includes
  ARM: integrator: use BUG_ON where possible
  ARM: integrator: push down SC dependencies
  ARM: integrator: delete static UART1 mapping
  ARM: integrator: delete SC mapping on the CP
  ARM: integrator: remove static CP syscon mapping
  ARM: integrator: remove static AP syscon mapping
  ...
Diffstat (limited to 'arch/arm/mach-omap2/cm3xxx.c')
| -rw-r--r-- | arch/arm/mach-omap2/cm3xxx.c | 66 | 
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/cm3xxx.c b/arch/arm/mach-omap2/cm3xxx.c index 8b03ec2f439..c2086f2e86b 100644 --- a/arch/arm/mach-omap2/cm3xxx.c +++ b/arch/arm/mach-omap2/cm3xxx.c @@ -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);  |