static int __devinit emi_driver_probe(struct platform_device *pdev)
{
struct resource *res;
int err;
BUG_ON(emi_initialised);
emi_device_state = devm_stm_device_init(&pdev->dev,
(struct stm_device_config *)pdev->dev.platform_data);
if (!emi_device_state)
return -EBUSY;
err = remap_named_resource(pdev, "emiss config", &emiss_config);
if (err)
return err;
err = remap_named_resource(pdev, "emi4 config", &emi_control);
if (err)
return err;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "emi memory");
if (!res)
return -ENXIO;
emi_memory_base = res->start;
emi_clk = clk_get(&pdev->dev, "emi_clk");
if (!emi_clk)
pr_warning("emi_clk not found!\n");
emi_clk_enable();
emi = pdev; /* to say the EMI is initialised */
return 0;
}
static int emi_resume(struct device *dev)
{
emi_clk_enable();
stm_device_power(emi_device_state, stm_device_power_on);
return 0;
}
static int emi_hibernation(int resuming)
{
int idx;
int bank, data;
static struct emi_pm *emi_saved_data;
if (resuming)
if (emi_saved_data) {
/* restore the previous common value */
for (idx = 0; idx < emi_num_common_cfg-4; ++idx)
writel(emi_saved_data->common_cfg[idx],
emi_control+EMI_COMMON_CFG(idx));
writel(emi_saved_data->common_cfg[12], emi_control
+ EMI_BANK_ENABLE);
writel(emi_saved_data->common_cfg[13], emi_control
+ EMI_BANKNUMBER);
writel(emi_saved_data->common_cfg[14], emiss_config +
EMISS_CONFIG);
writel(emi_saved_data->common_cfg[15], emiss_config +
EMISS_ARBITER_CONFIG);
/* restore the previous bank values */
for (bank = 0; bank < emi_num_bank; ++bank) {
writel(emi_saved_data->bank[bank].base_address,
emi_control + BANK_BASEADDRESS(bank));
for (data = 0; data < emi_num_bank_cfg; ++data)
emi_bank_configure(bank, emi_saved_data->bank[bank].cfg);
}
kfree(emi_saved_data);
emi_saved_data = NULL;
emi_clk_enable();
stm_device_power(emi_device_state,
stm_device_power_on);
}
return 0;
/*
* hibernationg...
*/
emi_saved_data = kmalloc(sizeof(struct emi_pm), GFP_NOWAIT);
if (!emi_saved_data) {
printk(KERN_ERR "Unable to freeze the emi registers\n");
return -ENOMEM;
}
/* save the emi common values */
for (idx = 0; idx < emi_num_common_cfg-4; ++idx)
emi_saved_data->common_cfg[idx] =
readl(emi_control + EMI_COMMON_CFG(idx));
emi_saved_data->common_cfg[12] =
readl(emi_control + EMI_BANK_ENABLE);
emi_saved_data->common_cfg[13] =
readl(emi_control + EMI_BANKNUMBER);
emi_saved_data->common_cfg[14] =
readl(emiss_config + EMISS_CONFIG);
emi_saved_data->common_cfg[15] =
readl(emiss_config + EMISS_ARBITER_CONFIG);
/* save the emi bank value */
for (bank = 0; bank < emi_num_bank; ++bank) {
emi_saved_data->bank[bank].base_address =
readl(emi_control + BANK_BASEADDRESS(bank));
for (data = 0; data < emi_num_bank_cfg; ++data)
emi_saved_data->bank[bank].cfg[data] =
readl(emi_control + BANK_EMICONFIGDATA(bank, data));
}
return 0;
}
static int emi_resume(void)
{
emi_clk_enable();
stm_device_power(emi_device_state, stm_device_power_on);
return 0;
}
