Compact flash driver is now working

[openwrt.git] / target / linux / adm5120 / files / drivers / ata / pata_rb153_cf.c

diff --git a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c
index 16ec676..fbbf313 100644 (file)
--- a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c
+++ b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c
@@ -32,7 +32,7 @@
 #include <asm/gpio.h>
 
 #define DRV_NAME       "pata-rb153-cf"
-#define DRV_VERSION    "0.1"
+#define DRV_VERSION    "0.2.2"
 #define DRV_DESC       "PATA driver for RouterBOARD 153 Compact Flash"
 
 #define RB153_CF_MAXPORTS      1
@@ -45,7 +45,7 @@
 struct rb153_cf_info {
        void __iomem    *iobase;
        unsigned int    gpio_line;
-       int             error;
+       int             frozen;
 };
 
 /* ------------------------------------------------------------------------ */
@@ -70,25 +70,31 @@ static void rb153_pata_exec_command(struct ata_port *ap,
 static void rb153_pata_data_xfer(struct ata_device *adev, unsigned char *buf,
                                unsigned int buflen, int write_data)
 {
-       struct ata_port *ap = adev->ap;
-       unsigned int i;
+       void __iomem *ioaddr = adev->ap->ioaddr.data_addr;
 
        if (write_data) {
-               for (i = 0; i < buflen; i++)
-                       writeb(buf[i], ap->ioaddr.data_addr);
+               for (; buflen > 0; buflen--, buf++)
+                       writeb(*buf, ioaddr);
        } else {
-               for (; buflen > 0; buflen--)
-                       buf[i] = readb(ap->ioaddr.data_addr);
+               for (; buflen > 0; buflen--, buf++)
+                       *buf = readb(ioaddr);
        }
 
-       rb153_pata_finish_io(ap);
+       rb153_pata_finish_io(adev->ap);
+}
+
+static void rb153_pata_freeze(struct ata_port *ap)
+{
+       struct rb153_cf_info *info = ap->host->private_data;
+
+       info->frozen = 1;
 }
 
 static void rb153_pata_thaw(struct ata_port *ap)
 {
        struct rb153_cf_info *info = ap->host->private_data;
 
-       info->error = 0;
+       info->frozen = 0;
 }
 
 static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance)
@@ -98,7 +104,7 @@ static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance)
 
        if (gpio_get_value(info->gpio_line)) {
                set_irq_type(ah->irq, IRQ_TYPE_LEVEL_LOW);
-               if (!info->error)
+               if (!info->frozen)
                        ata_interrupt(irq, dev_instance);
        } else {
                set_irq_type(ah->irq, IRQ_TYPE_LEVEL_HIGH);
@@ -131,6 +137,7 @@ static struct ata_port_operations rb153_pata_port_ops = {
        .qc_prep                = ata_qc_prep,
        .qc_issue               = ata_qc_issue_prot,
 
+       .freeze                 = rb153_pata_freeze,
        .thaw                   = rb153_pata_thaw,
        .error_handler          = ata_bmdma_error_handler,
 
@@ -168,21 +175,20 @@ static void rb153_pata_setup_ports(struct ata_host *ah)
 {
        struct rb153_cf_info *info = ah->private_data;
        struct ata_port *ap;
-       struct ata_ioports *iop;
 
        ap = ah->ports[0];
-       iop = &ap->ioaddr;
 
        ap->ops         = &rb153_pata_port_ops;
        ap->pio_mask    = 0x1f; /* PIO4 */
-       ap->flags       |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY;
+       ap->flags       = ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO;
+
+       ap->ioaddr.cmd_addr     = info->iobase + RB153_CF_REG_CMD;
+       ap->ioaddr.ctl_addr     = info->iobase + RB153_CF_REG_CTRL;
+       ap->ioaddr.altstatus_addr = info->iobase + RB153_CF_REG_CTRL;
 
-       iop->cmd_addr           = info->iobase + RB153_CF_REG_CMD;
-       iop->ctl_addr           = info->iobase + RB153_CF_REG_CTRL;
-       iop->altstatus_addr     = info->iobase + RB153_CF_REG_CTRL;
-       iop->data_addr          = info->iobase + RB153_CF_REG_DATA;
+       ata_std_ports(&ap->ioaddr);
 
-       ata_std_ports(iop);
+       ap->ioaddr.data_addr    = info->iobase + RB153_CF_REG_DATA;
 }
 
 static __devinit int rb153_pata_driver_probe(struct platform_device *pdev)
@@ -230,6 +236,7 @@ static __devinit int rb153_pata_driver_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        ah->private_data = info;
+       info->gpio_line = gpio;
 
        info->iobase = devm_ioremap_nocache(&pdev->dev, res->start,
                                res->end - res->start + 1);
@@ -245,8 +252,8 @@ static __devinit int rb153_pata_driver_probe(struct platform_device *pdev)
 
        rb153_pata_setup_ports(ah);
 
-       ret = ata_host_activate(ah, irq, ata_interrupt, IRQF_TRIGGER_HIGH,
-                               &rb153_pata_sht);
+       ret = ata_host_activate(ah, irq, rb153_pata_irq_handler,
+                               IRQF_TRIGGER_LOW, &rb153_pata_sht);
        if (ret)
                goto err_free_gpio;