The following patch series is a complete updated set of changes I did to
the pata-rb532-cf driver. In ordered detail: fix functionality, restore
the behaviour of the original driver when doing transfers and eliminate
compiler warnings.
Greetings, Phil
---
After applying the following changes I could verify functionality by
mounting a filesystem on the cfdisk and reading/writing files in it.
The set_irq_type() function must be wrong, as there is no set_type()
function defined for the rb532 IRQ chip. But as the used IRQ actually is
being triggered by a GPIO, setting it's interrupt level should be the
right alternative. Also to clear a GPIO triggered IRQ, the source has to
be cleared. This is being done at the end of rb532_pata_irq_handler.
Signed-off-by: Phil Sutter <n0-1@xxxxxxxxxxx>
Acked-by: Florian Fainelli <florian@xxxxxxxxxxx>
---
drivers/ata/pata_rb532_cf.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index f8b3ffc..7b11f40 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -31,6 +31,7 @@
#include <scsi/scsi_host.h>
#include <asm/gpio.h>
+#include <asm/mach-rc32434/gpio.h>
#define DRV_NAME "pata-rb532-cf"
#define DRV_VERSION "0.1.0"
@@ -39,7 +40,8 @@
#define RB500_CF_MAXPORTS 1
#define RB500_CF_IO_DELAY 400
-#define RB500_CF_REG_CMD 0x0800
+#define RB500_CF_REG_BASE 0x0800
+#define RB500_CF_REG_ERR 0x080D
#define RB500_CF_REG_CTRL 0x080E
#define RB500_CF_REG_DATA 0x0C00
@@ -62,7 +64,7 @@ static inline void rb532_pata_finish_io(struct ata_port *ap)
ata_sff_dma_pause(ap);
ndelay(RB500_CF_IO_DELAY);
- set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
+ rb532_gpio_set_ilevel(1, info->gpio_line);
}
static void rb532_pata_exec_command(struct ata_port *ap,
@@ -109,13 +111,15 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
struct rb532_cf_info *info = ah->private_data;
if (gpio_get_value(info->gpio_line)) {
- set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW);
+ rb532_gpio_set_ilevel(0, info->gpio_line);
if (!info->frozen)
ata_sff_interrupt(info->irq, dev_instance);
} else {
- set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
+ rb532_gpio_set_ilevel(1, info->gpio_line);
}
+ rb532_gpio_set_istat(0, info->gpio_line);
+
return IRQ_HANDLED;
}
@@ -146,13 +150,14 @@ static void rb532_pata_setup_ports(struct ata_host *ah)
ap->pio_mask = 0x1f; /* PIO4 */
ap->flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO;
- ap->ioaddr.cmd_addr = info->iobase + RB500_CF_REG_CMD;
+ ap->ioaddr.cmd_addr = info->iobase + RB500_CF_REG_BASE;
ap->ioaddr.ctl_addr = info->iobase + RB500_CF_REG_CTRL;
ap->ioaddr.altstatus_addr = info->iobase + RB500_CF_REG_CTRL;
ata_sff_std_ports(&ap->ioaddr);
ap->ioaddr.data_addr = info->iobase + RB500_CF_REG_DATA;
+ ap->ioaddr.error_addr = info->iobase + RB500_CF_REG_ERR;
}
static __devinit int rb532_pata_driver_probe(struct platform_device *pdev)
--
1.5.6.4
--
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