memstick: set PMOS values propery for JMicron 38x controllers
[pandora-kernel.git] / drivers / memstick / host / jmb38x_ms.c
index f2b894c..4ce8773 100644 (file)
@@ -61,6 +61,7 @@ struct jmb38x_ms_host {
        struct memstick_request *req;
        unsigned char           cmd_flags;
        unsigned char           io_pos;
+       unsigned char           ifmode;
        unsigned int            io_word[2];
 };
 
@@ -136,15 +137,14 @@ struct jmb38x_ms {
 #define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
 #define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
 
+#define CLOCK_CONTROL_BY_MMIO 0x00000008
 #define CLOCK_CONTROL_40MHZ   0x00000001
-#define CLOCK_CONTROL_50MHZ   0x0000000a
-#define CLOCK_CONTROL_60MHZ   0x00000008
-#define CLOCK_CONTROL_62_5MHZ 0x0000000c
+#define CLOCK_CONTROL_50MHZ   0x00000002
+#define CLOCK_CONTROL_60MHZ   0x00000010
+#define CLOCK_CONTROL_62_5MHZ 0x00000004
 #define CLOCK_CONTROL_OFF     0x00000000
 
 #define PCI_CTL_CLOCK_DLY_ADDR   0x000000b0
-#define PCI_CTL_CLOCK_DLY_MASK_A 0x00000f00
-#define PCI_CTL_CLOCK_DLY_MASK_B 0x0000f000
 
 enum {
        CMD_READY    = 0x01,
@@ -390,8 +390,13 @@ static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
 
        if (host->req->data_dir == READ)
                cmd |= TPC_DIR;
-       if (host->req->need_card_int)
-               cmd |= TPC_WAIT_INT;
+
+       if (host->req->need_card_int) {
+               if (host->ifmode == MEMSTICK_SERIAL)
+                       cmd |= TPC_GET_INT;
+               else
+                       cmd |= TPC_WAIT_INT;
+       }
 
        data = host->req->data;
 
@@ -529,7 +534,10 @@ static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
                if (irq_status & INT_STATUS_ANY_ERR) {
                        if (irq_status & INT_STATUS_CRC_ERR)
                                host->req->error = -EILSEQ;
-                       else
+                       else if (irq_status & INT_STATUS_TPC_ERR) {
+                               dev_dbg(&host->chip->pdev->dev, "TPC_ERR\n");
+                               jmb38x_ms_complete_cmd(msh, 0);
+                       } else
                                host->req->error = -ETIME;
                } else {
                        if (host->cmd_flags & DMA_DATA) {
@@ -644,7 +652,6 @@ static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
                ndelay(20);
        }
        dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n");
-       /* return -EIO; */
 
 reset_next:
        writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
@@ -675,7 +682,7 @@ static int jmb38x_ms_set_param(struct memstick_host *msh,
 {
        struct jmb38x_ms_host *host = memstick_priv(msh);
        unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
-       unsigned int clock_ctl = CLOCK_CONTROL_40MHZ, clock_delay = 0;
+       unsigned int clock_ctl = CLOCK_CONTROL_BY_MMIO, clock_delay = 0;
        int rc = 0;
 
        switch (param) {
@@ -687,9 +694,7 @@ static int jmb38x_ms_set_param(struct memstick_host *msh,
 
                        host_ctl = 7;
                        host_ctl |= HOST_CONTROL_POWER_EN
-                                   | HOST_CONTROL_CLOCK_EN
-                                   | HOST_CONTROL_HW_OC_P
-                                   | HOST_CONTROL_TDELAY_EN;
+                                | HOST_CONTROL_CLOCK_EN;
                        writel(host_ctl, host->addr + HOST_CONTROL);
 
                        writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
@@ -712,46 +717,76 @@ static int jmb38x_ms_set_param(struct memstick_host *msh,
                        return -EINVAL;
                break;
        case MEMSTICK_INTERFACE:
+               dev_dbg(&host->chip->pdev->dev,
+                       "Set Host Interface Mode to %d\n", value);
+               host_ctl &= ~(HOST_CONTROL_FAST_CLK | HOST_CONTROL_REI |
+                             HOST_CONTROL_REO);
+               host_ctl |= HOST_CONTROL_TDELAY_EN | HOST_CONTROL_HW_OC_P;
                host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
-               pci_read_config_dword(host->chip->pdev,
-                                     PCI_CTL_CLOCK_DLY_ADDR,
-                                     &clock_delay);
-               clock_delay &= host->id ? ~PCI_CTL_CLOCK_DLY_MASK_B
-                                       : ~PCI_CTL_CLOCK_DLY_MASK_A;
 
                if (value == MEMSTICK_SERIAL) {
-                       host_ctl &= ~HOST_CONTROL_FAST_CLK;
-                       host_ctl &= ~HOST_CONTROL_REO;
                        host_ctl |= HOST_CONTROL_IF_SERIAL
                                    << HOST_CONTROL_IF_SHIFT;
                        host_ctl |= HOST_CONTROL_REI;
-                       clock_ctl = CLOCK_CONTROL_40MHZ;
+                       clock_ctl |= CLOCK_CONTROL_40MHZ;
+                       clock_delay = 0;
                } else if (value == MEMSTICK_PAR4) {
-                       host_ctl |= HOST_CONTROL_FAST_CLK | HOST_CONTROL_REO;
+                       host_ctl |= HOST_CONTROL_FAST_CLK;
                        host_ctl |= HOST_CONTROL_IF_PAR4
                                    << HOST_CONTROL_IF_SHIFT;
-                       host_ctl &= ~HOST_CONTROL_REI;
-                       clock_ctl = CLOCK_CONTROL_40MHZ;
-                       clock_delay |= host->id ? (4 << 12) : (4 << 8);
+                       host_ctl |= HOST_CONTROL_REO;
+                       clock_ctl |= CLOCK_CONTROL_40MHZ;
+                       clock_delay = 4;
                } else if (value == MEMSTICK_PAR8) {
                        host_ctl |= HOST_CONTROL_FAST_CLK;
                        host_ctl |= HOST_CONTROL_IF_PAR8
                                    << HOST_CONTROL_IF_SHIFT;
-                       host_ctl &= ~(HOST_CONTROL_REI | HOST_CONTROL_REO);
-                       clock_ctl = CLOCK_CONTROL_50MHZ;
+                       clock_ctl |= CLOCK_CONTROL_50MHZ;
+                       clock_delay = 0;
                } else
                        return -EINVAL;
 
                writel(host_ctl, host->addr + HOST_CONTROL);
+               writel(CLOCK_CONTROL_OFF, host->addr + CLOCK_CONTROL);
                writel(clock_ctl, host->addr + CLOCK_CONTROL);
-               pci_write_config_dword(host->chip->pdev,
-                                      PCI_CTL_CLOCK_DLY_ADDR,
-                                      clock_delay);
+               pci_write_config_byte(host->chip->pdev,
+                                     PCI_CTL_CLOCK_DLY_ADDR + 1,
+                                     clock_delay);
+               host->ifmode = value;
                break;
        };
        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)
@@ -784,8 +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])
@@ -894,8 +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) {
@@ -976,6 +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);