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authorPaul Walmsley <paul@pwsan.com>2013-01-26 00:48:56 -0700
committerPaul Walmsley <paul@pwsan.com>2013-01-26 01:42:33 -0700
commitaff2f7d90fc6553aa309db2a635d8e5d70d84916 (patch)
tree80fa1aa61a364aa6afaa1d14a92870e647954f5e /arch/arm/mach-omap2/pm24xx.c
parentfa2002223e12c6b1bc96381b70c376afe4e01d80 (diff)
ARM: OMAP2420: hwmod data/PM: use hwmod to block WFI when I2C active
Use the HWMOD_BLOCK_WFI flag in the hwmod data to prevent the MPU from entering WFI when the I2C devices are active. No idea why this is needed; this could certainly bear further investigation if anyone is interested. The objective here is to remove some custom code from the OMAP24xx PM code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm24xx.c')
-rw-r--r--arch/arm/mach-omap2/pm24xx.c13
1 files changed, 0 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c
index c333fa6dffa..909ef53ba2e 100644
--- a/arch/arm/mach-omap2/pm24xx.c
+++ b/arch/arm/mach-omap2/pm24xx.c
@@ -140,14 +140,6 @@ no_sleep:
return 0;
}
-static int omap2_i2c_active(void)
-{
- u32 l;
-
- l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
- return l & (OMAP2420_EN_I2C2_MASK | OMAP2420_EN_I2C1_MASK);
-}
-
static int sti_console_enabled;
static int omap2_allow_mpu_retention(void)
@@ -172,11 +164,6 @@ static int omap2_allow_mpu_retention(void)
static void omap2_enter_mpu_retention(void)
{
- /* Putting MPU into the WFI state while a transfer is active
- * seems to cause the I2C block to timeout. Why? Good question. */
- if (omap2_i2c_active())
- return;
-
/* The peripherals seem not to be able to wake up the MPU when
* it is in retention mode. */
if (omap2_allow_mpu_retention()) {