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authorTakashi Iwai <tiwai@suse.de>2011-01-12 17:01:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 08:03:21 -0800
commit68860b96ebac0d56961cf80b94f65dab55e39069 (patch)
treead9b49de53ec5161fe9730f32a032d174830e93b /drivers/memstick
parent23c5947ac3f7a610bb4cb9e433802b36edc80fdf (diff)
downloadvexpress-lsk-68860b96ebac0d56961cf80b94f65dab55e39069.tar.gz
memstick: set PMOS values propery for JMicron 38x controllers
Add a function jmb38x_ms_pmos() to enable / disable PMOS setups for JMicron 38x controllers. Signed-off-by: Aries Lee <arieslee@jmicron.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Cc: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/memstick')
-rw-r--r--drivers/memstick/host/jmb38x_ms.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index c90ba508225..4ce8773fa3b 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -758,6 +758,35 @@ static int jmb38x_ms_set_param(struct memstick_host *msh,
return 0;
}
+#define PCI_PMOS0_CONTROL 0xae
+#define PMOS0_ENABLE 0x01
+#define PMOS0_OVERCURRENT_LEVEL_2_4V 0x06
+#define PMOS0_EN_OVERCURRENT_DEBOUNCE 0x40
+#define PMOS0_SW_LED_POLARITY_ENABLE 0x80
+#define PMOS0_ACTIVE_BITS (PMOS0_ENABLE | PMOS0_EN_OVERCURRENT_DEBOUNCE | \
+ PMOS0_OVERCURRENT_LEVEL_2_4V)
+#define PCI_CLOCK_CTL 0xb9
+
+static int jmb38x_ms_pmos(struct pci_dev *pdev, int flag)
+{
+ unsigned char val;
+
+ pci_read_config_byte(pdev, PCI_PMOS0_CONTROL, &val);
+ if (flag)
+ val |= PMOS0_ACTIVE_BITS;
+ else
+ val &= ~PMOS0_ACTIVE_BITS;
+ pci_write_config_byte(pdev, PCI_PMOS0_CONTROL, val);
+ dev_dbg(&pdev->dev, "JMB38x: set PMOS0 val 0x%x\n", val);
+
+ pci_read_config_byte(pdev, PCI_CLOCK_CTL, &val);
+ pci_write_config_byte(pdev, PCI_CLOCK_CTL, val & ~0x0f);
+ pci_write_config_byte(pdev, PCI_CLOCK_CTL, val | 0x01);
+ dev_dbg(&pdev->dev, "Clock Control by PCI config is disabled!\n");
+
+ return 0;
+}
+
#ifdef CONFIG_PM
static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state)
@@ -790,8 +819,7 @@ static int jmb38x_ms_resume(struct pci_dev *dev)
return rc;
pci_set_master(dev);
- pci_read_config_dword(dev, 0xac, &rc);
- pci_write_config_dword(dev, 0xac, rc | 0x00470000);
+ jmb38x_ms_pmos(dev, 1);
for (rc = 0; rc < jm->host_cnt; ++rc) {
if (!jm->hosts[rc])
@@ -900,8 +928,7 @@ static int jmb38x_ms_probe(struct pci_dev *pdev,
goto err_out;
}
- pci_read_config_dword(pdev, 0xac, &rc);
- pci_write_config_dword(pdev, 0xac, rc | 0x00470000);
+ jmb38x_ms_pmos(pdev, 1);
cnt = jmb38x_ms_count_slots(pdev);
if (!cnt) {
@@ -982,6 +1009,8 @@ static void jmb38x_ms_remove(struct pci_dev *dev)
jmb38x_ms_free_host(jm->hosts[cnt]);
}
+ jmb38x_ms_pmos(dev, 0);
+
pci_set_drvdata(dev, NULL);
pci_release_regions(dev);
pci_disable_device(dev);