aboutsummaryrefslogtreecommitdiff
path: root/drivers/ata/pata_sil680.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ata/pata_sil680.c')
-rw-r--r--drivers/ata/pata_sil680.c125
1 files changed, 62 insertions, 63 deletions
diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c
index 00eefbd84b3..f597edccede 100644
--- a/drivers/ata/pata_sil680.c
+++ b/drivers/ata/pata_sil680.c
@@ -11,7 +11,7 @@
*
* May be copied or modified under the terms of the GNU General Public License
*
- * Documentation publically available.
+ * Documentation publicly available.
*
* If you have strange problems with nVidia chipset systems please
* see the SI support documentation and update your system BIOS
@@ -25,7 +25,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
@@ -38,12 +37,13 @@
/**
* sil680_selreg - return register base
- * @hwif: interface
+ * @ap: ATA interface
* @r: config offset
*
- * Turn a config register offset into the right address in either
- * PCI space or MMIO space to access the control register in question
- * Thankfully this is a configuration operation so isnt performance
+ * Turn a config register offset into the right address in PCI space
+ * to access the control register in question.
+ *
+ * Thankfully this is a configuration operation so isn't performance
* criticial.
*/
@@ -56,12 +56,12 @@ static unsigned long sil680_selreg(struct ata_port *ap, int r)
/**
* sil680_seldev - return register base
- * @hwif: interface
+ * @ap: ATA interface
* @r: config offset
*
- * Turn a config register offset into the right address in either
- * PCI space or MMIO space to access the control register in question
- * including accounting for the unit shift.
+ * Turn a config register offset into the right address in PCI space
+ * to access the control register in question including accounting for
+ * the unit shift.
*/
static unsigned long sil680_seldev(struct ata_port *ap, struct ata_device *adev, int r)
@@ -81,7 +81,8 @@ static unsigned long sil680_seldev(struct ata_port *ap, struct ata_device *adev,
* space for us.
*/
-static int sil680_cable_detect(struct ata_port *ap) {
+static int sil680_cable_detect(struct ata_port *ap)
+{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned long addr = sil680_selreg(ap, 0);
u8 ata66;
@@ -93,7 +94,7 @@ static int sil680_cable_detect(struct ata_port *ap) {
}
/**
- * sil680_set_piomode - set initial PIO mode data
+ * sil680_set_piomode - set PIO mode data
* @ap: ATA interface
* @adev: ATA device
*
@@ -104,8 +105,12 @@ static int sil680_cable_detect(struct ata_port *ap) {
static void sil680_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
- static u16 speed_p[5] = { 0x328A, 0x2283, 0x1104, 0x10C3, 0x10C1 };
- static u16 speed_t[5] = { 0x328A, 0x2283, 0x1281, 0x10C3, 0x10C1 };
+ static const u16 speed_p[5] = {
+ 0x328A, 0x2283, 0x1104, 0x10C3, 0x10C1
+ };
+ static const u16 speed_t[5] = {
+ 0x328A, 0x2283, 0x1281, 0x10C3, 0x10C1
+ };
unsigned long tfaddr = sil680_selreg(ap, 0x02);
unsigned long addr = sil680_seldev(ap, adev, 0x04);
@@ -140,22 +145,23 @@ static void sil680_set_piomode(struct ata_port *ap, struct ata_device *adev)
}
/**
- * sil680_set_dmamode - set initial DMA mode data
+ * sil680_set_dmamode - set DMA mode data
* @ap: ATA interface
* @adev: ATA device
*
- * Program the MWDMA/UDMA modes for the sil680 k
- * chipset. The MWDMA mode values are pulled from a lookup table
+ * Program the MWDMA/UDMA modes for the sil680 chipset.
+ *
+ * The MWDMA mode values are pulled from a lookup table
* while the chipset uses mode number for UDMA.
*/
static void sil680_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
- static u8 ultra_table[2][7] = {
+ static const u8 ultra_table[2][7] = {
{ 0x0C, 0x07, 0x05, 0x04, 0x02, 0x01, 0xFF }, /* 100MHz */
{ 0x0F, 0x0B, 0x07, 0x05, 0x03, 0x02, 0x01 }, /* 133Mhz */
};
- static u16 dma_table[3] = { 0x2208, 0x10C2, 0x10C1 };
+ static const u16 dma_table[3] = { 0x2208, 0x10C2, 0x10C1 };
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned long ma = sil680_seldev(ap, adev, 0x08);
@@ -175,7 +181,7 @@ static void sil680_set_dmamode(struct ata_port *ap, struct ata_device *adev)
mode &= ~(0x03 << port_shift);
/* Extract scsc */
- scsc = (scsc & 0x30) ? 1: 0;
+ scsc = (scsc & 0x30) ? 1 : 0;
if (adev->dma_mode >= XFER_UDMA_0) {
multi = 0x10C1;
@@ -248,7 +254,7 @@ static u8 sil680_init_chip(struct pci_dev *pdev, int *try_mmio)
{
u8 tmpbyte = 0;
- /* FIXME: double check */
+ /* FIXME: double check */
pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
pdev->revision ? 1 : 255);
@@ -266,22 +272,22 @@ static u8 sil680_init_chip(struct pci_dev *pdev, int *try_mmio)
*try_mmio = (tmpbyte & 1) || pci_resource_start(pdev, 5);
#endif
- switch(tmpbyte & 0x30) {
- case 0x00:
- /* 133 clock attempt to force it on */
- pci_write_config_byte(pdev, 0x8A, tmpbyte|0x10);
- break;
- case 0x30:
- /* if clocking is disabled */
- /* 133 clock attempt to force it on */
- pci_write_config_byte(pdev, 0x8A, tmpbyte & ~0x20);
- break;
- case 0x10:
- /* 133 already */
- break;
- case 0x20:
- /* BIOS set PCI x2 clocking */
- break;
+ switch (tmpbyte & 0x30) {
+ case 0x00:
+ /* 133 clock attempt to force it on */
+ pci_write_config_byte(pdev, 0x8A, tmpbyte|0x10);
+ break;
+ case 0x30:
+ /* if clocking is disabled */
+ /* 133 clock attempt to force it on */
+ pci_write_config_byte(pdev, 0x8A, tmpbyte & ~0x20);
+ break;
+ case 0x10:
+ /* 133 already */
+ break;
+ case 0x20:
+ /* BIOS set PCI x2 clocking */
+ break;
}
pci_read_config_byte(pdev, 0x8A, &tmpbyte);
@@ -299,18 +305,24 @@ static u8 sil680_init_chip(struct pci_dev *pdev, int *try_mmio)
pci_write_config_dword(pdev, 0xB8, 0x43924392);
pci_write_config_dword(pdev, 0xBC, 0x40094009);
- switch(tmpbyte & 0x30) {
- case 0x00: printk(KERN_INFO "sil680: 100MHz clock.\n");break;
- case 0x10: printk(KERN_INFO "sil680: 133MHz clock.\n");break;
- case 0x20: printk(KERN_INFO "sil680: Using PCI clock.\n");break;
- /* This last case is _NOT_ ok */
- case 0x30: printk(KERN_ERR "sil680: Clock disabled ?\n");
+ switch (tmpbyte & 0x30) {
+ case 0x00:
+ printk(KERN_INFO "sil680: 100MHz clock.\n");
+ break;
+ case 0x10:
+ printk(KERN_INFO "sil680: 133MHz clock.\n");
+ break;
+ case 0x20:
+ printk(KERN_INFO "sil680: Using PCI clock.\n");
+ break;
+ /* This last case is _NOT_ ok */
+ case 0x30:
+ printk(KERN_ERR "sil680: Clock disabled ?\n");
}
return tmpbyte & 0x30;
}
-static int __devinit sil680_init_one(struct pci_dev *pdev,
- const struct pci_device_id *id)
+static int sil680_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
static const struct ata_port_info info = {
.flags = ATA_FLAG_SLAVE_POSS,
@@ -327,13 +339,11 @@ static int __devinit sil680_init_one(struct pci_dev *pdev,
.port_ops = &sil680_port_ops
};
const struct ata_port_info *ppi[] = { &info, NULL };
- static int printed_version;
struct ata_host *host;
void __iomem *mmio_base;
int rc, try_mmio;
- if (!printed_version++)
- dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
+ ata_print_version_once(&pdev->dev, DRV_VERSION);
rc = pcim_enable_device(pdev);
if (rc)
@@ -393,10 +403,10 @@ use_ioports:
return ata_pci_bmdma_init_one(pdev, ppi, &sil680_sht, NULL, 0);
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int sil680_reinit_one(struct pci_dev *pdev)
{
- struct ata_host *host = dev_get_drvdata(&pdev->dev);
+ struct ata_host *host = pci_get_drvdata(pdev);
int try_mmio, rc;
rc = ata_pci_device_do_resume(pdev);
@@ -419,27 +429,16 @@ static struct pci_driver sil680_pci_driver = {
.id_table = sil680,
.probe = sil680_init_one,
.remove = ata_pci_remove_one,
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
.suspend = ata_pci_device_suspend,
.resume = sil680_reinit_one,
#endif
};
-static int __init sil680_init(void)
-{
- return pci_register_driver(&sil680_pci_driver);
-}
-
-static void __exit sil680_exit(void)
-{
- pci_unregister_driver(&sil680_pci_driver);
-}
+module_pci_driver(sil680_pci_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for SI680 PATA");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, sil680);
MODULE_VERSION(DRV_VERSION);
-
-module_init(sil680_init);
-module_exit(sil680_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 17:05:31 +0000