static int am33xx_push_sram_idle(void)
{
struct am33xx_pm_ro_sram_data ro_sram_data;
int ret;
u32 table_addr, ro_data_addr;
void *copy_addr;
ro_sram_data.amx3_pm_sram_data_virt = ocmcram_location_data;
ro_sram_data.amx3_pm_sram_data_phys =
gen_pool_virt_to_phys(sram_pool_data, ocmcram_location_data);
/* Save physical address to calculate resume offset during pm init */
am33xx_do_wfi_sram_phys = gen_pool_virt_to_phys(sram_pool,
ocmcram_location);
am33xx_do_wfi_sram = sram_exec_copy(sram_pool, (void *)ocmcram_location,
pm_sram->do_wfi,
*pm_sram->do_wfi_sz);
if (!am33xx_do_wfi_sram) {
dev_err(pm33xx_dev,
"PM: %s: am33xx_do_wfi copy to sram failed\n",
__func__);
return -ENODEV;
}
table_addr =
sram_suspend_address((unsigned long)pm_sram->emif_sram_table);
ret = ti_emif_copy_pm_function_table(sram_pool, (void *)table_addr);
if (ret) {
dev_dbg(pm33xx_dev,
"PM: %s: EMIF function copy failed\n", __func__);
return -EPROBE_DEFER;
}
ro_data_addr =
sram_suspend_address((unsigned long)pm_sram->ro_sram_data);
copy_addr = sram_exec_copy(sram_pool, (void *)ro_data_addr,
&ro_sram_data,
sizeof(ro_sram_data));
if (!copy_addr) {
dev_err(pm33xx_dev,
"PM: %s: ro_sram_data copy to sram failed\n",
__func__);
return -ENODEV;
}
return 0;
}
static int ti_emif_push_sram(struct device *dev)
{
struct device_node *np = dev->of_node;
sram_pool = of_gen_pool_get(np, "sram", 0);
if (!sram_pool) {
dev_err(dev, "Unable to get sram pool for ocmcram\n");
return -ENODEV;
}
ocmcram_location = gen_pool_alloc(sram_pool, ti_emif_sram_sz);
if (!ocmcram_location) {
dev_err(dev, "Unable to allocate memory from ocmcram\n");
return -EINVAL;
}
/* Save physical address to calculate resume offset during pm init */
ti_emif_sram_phys = gen_pool_virt_to_phys(sram_pool,
ocmcram_location);
ti_emif_sram_virt = fncpy((void *)ocmcram_location,
&ti_emif_sram,
ti_emif_sram_sz);
/*
* These functions are called during suspend path while MMU is
* still on so add virtual base to offset for absolute address
*/
ti_emif_pm.save_context = sram_suspend_address(ti_emif_pm.save_context);
ti_emif_pm.enter_sr = sram_suspend_address(ti_emif_pm.enter_sr);
ti_emif_pm.abort_sr = sram_suspend_address(ti_emif_pm.abort_sr);
/*
* These are called during resume path when MMU is not enabled
* so physical address is used instead
*/
ti_emif_pm.restore_context =
sram_resume_address(ti_emif_pm.restore_context);
ti_emif_pm.exit_sr = sram_resume_address(ti_emif_pm.exit_sr);
return 0;
}
