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ARM: OMAP2: CM/PM: remove direct register accesses outside CM code

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Users of the CM funtionality should not access the CM registers directly
by themselves. Thus, added new CM driver APIs for the OMAP2 specific
functionalities which support the existing direct register accesses, and
changed the platform code to use these. This is done in preparation
for moving the CM code into its own individual driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Tero Kristo
2013-10-11 19:15:31 +03:00
committad av Paul Walmsley
förälder d0e639c9e0
incheckning cd6e9db277
6 ändrade filer med 89 tillägg och 49 borttagningar
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24
arch/arm/mach-omap2/pm24xx.c
Visa fil

@@ -62,16 +62,6 @@ static struct clockdomain *dsp_clkdm, *mpu_clkdm, *wkup_clkdm, *gfx_clkdm;
static struct clk *osc_ck, *emul_ck;
static int omap2_fclks_active(void)
{
u32 f1, f2;
f1 = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
f2 = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
return (f1 | f2) ? 1 : 0;
}
static int omap2_enter_full_retention(void)
{
u32 l;
@@ -142,17 +132,7 @@ static int sti_console_enabled;
static int omap2_allow_mpu_retention(void)
{
u32 l;
/* Check for MMC, UART2, UART1, McSPI2, McSPI1 and DSS1. */
l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
if (l & (OMAP2420_EN_MMC_MASK | OMAP24XX_EN_UART2_MASK |
OMAP24XX_EN_UART1_MASK | OMAP24XX_EN_MCSPI2_MASK |
OMAP24XX_EN_MCSPI1_MASK | OMAP24XX_EN_DSS1_MASK))
return 0;
/* Check for UART3. */
l = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
if (l & OMAP24XX_EN_UART3_MASK)
if (!omap2xxx_cm_mpu_retention_allowed())
return 0;
if (sti_console_enabled)
return 0;
@@ -188,7 +168,7 @@ static void omap2_enter_mpu_retention(void)
static int omap2_can_sleep(void)
{
if (omap2_fclks_active())
if (omap2xxx_cm_fclks_active())
return 0;
if (__clk_is_enabled(osc_ck))
return 0;