diff options
Diffstat (limited to 'drivers/ata/pata_rb532_cf.c')
| -rw-r--r-- | drivers/ata/pata_rb532_cf.c | 110 |
1 files changed, 20 insertions, 90 deletions
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c index f8b3ffc8ae9..3c5eb8fa6bd 100644 --- a/drivers/ata/pata_rb532_cf.c +++ b/drivers/ata/pata_rb532_cf.c @@ -19,6 +19,7 @@ * */ +#include <linux/gfp.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> @@ -39,81 +40,30 @@ #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 +/* 32bit buffered data register offset */ +#define RB500_CF_REG_DBUF32 0x0C00 struct rb532_cf_info { void __iomem *iobase; unsigned int gpio_line; - int frozen; unsigned int irq; }; /* ------------------------------------------------------------------------ */ -static inline void rb532_pata_finish_io(struct ata_port *ap) -{ - struct ata_host *ah = ap->host; - struct rb532_cf_info *info = ah->private_data; - - /* FIXME: Keep previous delay. If this is merely a fence then - ata_sff_sync might be sufficient. */ - ata_sff_dma_pause(ap); - ndelay(RB500_CF_IO_DELAY); - - set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); -} - -static void rb532_pata_exec_command(struct ata_port *ap, - const struct ata_taskfile *tf) -{ - writeb(tf->command, ap->ioaddr.command_addr); - rb532_pata_finish_io(ap); -} - -static void rb532_pata_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) -{ - struct ata_port *ap = adev->link->ap; - void __iomem *ioaddr = ap->ioaddr.data_addr; - - if (write_data) { - for (; buflen > 0; buflen--, buf++) - writeb(*buf, ioaddr); - } else { - for (; buflen > 0; buflen--, buf++) - *buf = readb(ioaddr); - } - - rb532_pata_finish_io(adev->link->ap); -} - -static void rb532_pata_freeze(struct ata_port *ap) -{ - struct rb532_cf_info *info = ap->host->private_data; - - info->frozen = 1; -} - -static void rb532_pata_thaw(struct ata_port *ap) -{ - struct rb532_cf_info *info = ap->host->private_data; - - info->frozen = 0; -} - static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance) { struct ata_host *ah = 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); - if (!info->frozen) - ata_sff_interrupt(info->irq, dev_instance); + irq_set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW); + ata_sff_interrupt(info->irq, dev_instance); } else { - set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); + irq_set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); } return IRQ_HANDLED; @@ -121,10 +71,7 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance) static struct ata_port_operations rb532_pata_port_ops = { .inherits = &ata_sff_port_ops, - .sff_exec_command = rb532_pata_exec_command, - .sff_data_xfer = rb532_pata_data_xfer, - .freeze = rb532_pata_freeze, - .thaw = rb532_pata_thaw, + .sff_data_xfer = ata_sff_data_xfer32, }; /* ------------------------------------------------------------------------ */ @@ -143,21 +90,21 @@ static void rb532_pata_setup_ports(struct ata_host *ah) ap = ah->ports[0]; ap->ops = &rb532_pata_port_ops; - ap->pio_mask = 0x1f; /* PIO4 */ - ap->flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO; + ap->pio_mask = ATA_PIO4; - 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.data_addr = info->iobase + RB500_CF_REG_DBUF32; + ap->ioaddr.error_addr = info->iobase + RB500_CF_REG_ERR; } -static __devinit int rb532_pata_driver_probe(struct platform_device *pdev) +static int rb532_pata_driver_probe(struct platform_device *pdev) { - unsigned int irq; + int irq; int gpio; struct resource *res; struct ata_host *ah; @@ -204,7 +151,7 @@ static __devinit int rb532_pata_driver_probe(struct platform_device *pdev) info->irq = irq; info->iobase = devm_ioremap_nocache(&pdev->dev, res->start, - res->end - res->start + 1); + resource_size(res)); if (!info->iobase) return -ENOMEM; @@ -230,7 +177,7 @@ err_free_gpio: return ret; } -static __devexit int rb532_pata_driver_remove(struct platform_device *pdev) +static int rb532_pata_driver_remove(struct platform_device *pdev) { struct ata_host *ah = platform_get_drvdata(pdev); struct rb532_cf_info *info = ah->private_data; @@ -241,39 +188,22 @@ static __devexit int rb532_pata_driver_remove(struct platform_device *pdev) return 0; } -/* work with hotplug and coldplug */ -MODULE_ALIAS("platform:" DRV_NAME); - static struct platform_driver rb532_pata_platform_driver = { .probe = rb532_pata_driver_probe, - .remove = __devexit_p(rb532_pata_driver_remove), + .remove = rb532_pata_driver_remove, .driver = { .name = DRV_NAME, .owner = THIS_MODULE, }, }; -/* ------------------------------------------------------------------------ */ - #define DRV_INFO DRV_DESC " version " DRV_VERSION -static int __init rb532_pata_module_init(void) -{ - printk(KERN_INFO DRV_INFO "\n"); - - return platform_driver_register(&rb532_pata_platform_driver); -} - -static void __exit rb532_pata_module_exit(void) -{ - platform_driver_unregister(&rb532_pata_platform_driver); -} +module_platform_driver(rb532_pata_platform_driver); MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>"); MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); MODULE_DESCRIPTION(DRV_DESC); MODULE_VERSION(DRV_VERSION); MODULE_LICENSE("GPL"); - -module_init(rb532_pata_module_init); -module_exit(rb532_pata_module_exit); +MODULE_ALIAS("platform:" DRV_NAME); |