diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/memstick/host/jmb38x_ms.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c index c90ba5082252..4ce8773fa3b8 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); |