mfd: rtsx: Add shutdown callback in rtsx_pci_driver
Some actions to clear power state should be handled in .shutdown
callback in rtsx_pci_driver. This patch adopts the following measures to
catch this goal:
1. Add a function rtsx_pci_power_off to abstract the common ops in
.shutdown and .suspend
2. Add pcr->ops->force_power_down to fulfill the individual action for
each reader model
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index e06d6b0..97526f1 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -927,6 +927,21 @@
mutex_unlock(&pcr->pcr_mutex);
}
+static void rtsx_pci_power_off(struct rtsx_pcr *pcr, u8 pm_state)
+{
+ if (pcr->ops->turn_off_led)
+ pcr->ops->turn_off_led(pcr);
+
+ rtsx_pci_writel(pcr, RTSX_BIER, 0);
+ pcr->bier = 0;
+
+ rtsx_pci_write_register(pcr, PETXCFG, 0x08, 0x08);
+ rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, pm_state);
+
+ if (pcr->ops->force_power_down)
+ pcr->ops->force_power_down(pcr);
+}
+
static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
{
int err;
@@ -1255,7 +1270,6 @@
{
struct pcr_handle *handle;
struct rtsx_pcr *pcr;
- int ret = 0;
dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
@@ -1267,14 +1281,7 @@
mutex_lock(&pcr->pcr_mutex);
- if (pcr->ops->turn_off_led)
- pcr->ops->turn_off_led(pcr);
-
- rtsx_pci_writel(pcr, RTSX_BIER, 0);
- pcr->bier = 0;
-
- rtsx_pci_write_register(pcr, PETXCFG, 0x08, 0x08);
- rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x02);
+ rtsx_pci_power_off(pcr, HOST_ENTER_S3);
pci_save_state(pcidev);
pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
@@ -1282,7 +1289,7 @@
pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
mutex_unlock(&pcr->pcr_mutex);
- return ret;
+ return 0;
}
static int rtsx_pci_resume(struct pci_dev *pcidev)
@@ -1320,10 +1327,25 @@
return ret;
}
+static void rtsx_pci_shutdown(struct pci_dev *pcidev)
+{
+ struct pcr_handle *handle;
+ struct rtsx_pcr *pcr;
+
+ dev_dbg(&(pcidev->dev), "--> %s\n", __func__);
+
+ handle = pci_get_drvdata(pcidev);
+ pcr = handle->pcr;
+ rtsx_pci_power_off(pcr, HOST_ENTER_S1);
+
+ pci_disable_device(pcidev);
+}
+
#else /* CONFIG_PM */
#define rtsx_pci_suspend NULL
#define rtsx_pci_resume NULL
+#define rtsx_pci_shutdown NULL
#endif /* CONFIG_PM */
@@ -1334,6 +1356,7 @@
.remove = rtsx_pci_remove,
.suspend = rtsx_pci_suspend,
.resume = rtsx_pci_resume,
+ .shutdown = rtsx_pci_shutdown,
};
module_pci_driver(rtsx_pci_driver);