Hello Rajendra, one more comment from me...
"ext Rajendra Nayak" <rnayak@xxxxxx> writes:
> struct omap3_processor_cx omap3_power_states[OMAP3_MAX_STATES];
> Index: linux-omap-2.6/arch/arm/mach-omap2/pm34xx.c
> ===================================================================
> --- linux-omap-2.6.orig/arch/arm/mach-omap2/pm34xx.c 2008-09-01
> 18:23:19.000000000 +0530
> +++ linux-omap-2.6/arch/arm/mach-omap2/pm34xx.c 2008-09-01 18:24:02.000000000
> +0530
> @@ -27,10 +27,13 @@
> #include <mach/gpio.h>
> #include <mach/sram.h>
> #include <mach/pm.h>
> +#include <mach/prcm.h>
> #include <mach/clockdomain.h>
> #include <mach/powerdomain.h>
> #include <mach/common.h>
> #include <mach/control.h>
> +#include <mach/serial.h>
> +#include <mach/gpio.h>
> #include <asm/tlbflush.h>
>
> #include "cm.h"
> @@ -58,6 +61,7 @@ static struct powerdomain *mpu_pwrdm, *n
> static struct powerdomain *core_pwrdm, *per_pwrdm;
>
> int set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
> +void omap3_restore_sram_ctx(void);
>
> u32 context_mem[128];
>
> @@ -91,6 +95,16 @@ static void gpio_fclk_mask(u32 *fclk)
> *fclk &= ~(0x1f << 13);
> }
>
> +void omap3_save_per_ctx(void)
> +{
> + omap3_gpio_save();
> +}
> +
> +void omap3_restore_per_ctx(void)
> +{
> + omap3_gpio_restore();
> +}
> +
> /* PRCM Interrupt Handler for wakeups */
> static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id)
> {
> @@ -225,6 +239,7 @@ void omap_sram_idle(void)
> int mpu_next_state = PWRDM_POWER_ON;
> int per_next_state = PWRDM_POWER_ON;
> int core_next_state = PWRDM_POWER_ON;
> + int core_prev_state, per_prev_state;
>
> if (!_omap_sram_idle)
> return;
> @@ -261,15 +276,27 @@ void omap_sram_idle(void)
> /* PER changes only with core */
> per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
> if (per_next_state < PWRDM_POWER_ON) {
> + if (per_next_state == PWRDM_POWER_OFF) {
> + omap3_save_per_ctx();
> + omap3_save_uart_ctx(2);
> + }
> if (clocks_off_while_idle) {
> per_gpio_clk_disable();
> omap_serial_enable_clocks(0, 2);
> }
> }
> + if (core_next_state == PWRDM_POWER_OFF) {
> + omap3_save_core_ctx();
> + omap3_save_prcm_ctx();
Prcm is saved twice, once here...
> + omap3_save_uart_ctx(0);
> + omap3_save_uart_ctx(1);
> + }
> if (clocks_off_while_idle) {
> omap_serial_enable_clocks(0, 0);
> omap_serial_enable_clocks(0, 1);
> }
> + if (core_next_state == PWRDM_POWER_OFF)
> + omap3_save_prcm_ctx();
And then again here.
--
Jouni Högander
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