i2400m/USB: header for the USB bus driver

[safe/jmp/linux-2.6] / drivers / spi / omap_uwire.c

diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index d275c61..bab6ff0 100644 (file)
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -47,19 +47,18 @@
 
 #include <asm/system.h>
 #include <asm/irq.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
 #include <asm/io.h>
 #include <asm/mach-types.h>
 
-#include <asm/arch/mux.h>
-#include <asm/arch/omap730.h>  /* OMAP730_IO_CONF registers */
+#include <mach/mux.h>
+#include <mach/omap730.h>      /* OMAP730_IO_CONF registers */
 
 
 /* FIXME address is now a platform device resource,
  * and irqs should show there too...
  */
 #define UWIRE_BASE_PHYS                0xFFFB3000
-#define UWIRE_BASE             ((void *__iomem)IO_ADDRESS(UWIRE_BASE_PHYS))
 
 /* uWire Registers: */
 #define UWIRE_IO_SIZE 0x20
@@ -103,16 +102,21 @@ struct uwire_state {
 };
 
 /* REVISIT compile time constant for idx_shift? */
+/*
+ * Or, put it in a structure which is used throughout the driver;
+ * that avoids having to issue two loads for each bit of static data.
+ */
 static unsigned int uwire_idx_shift;
+static void __iomem *uwire_base;
 
 static inline void uwire_write_reg(int idx, u16 val)
 {
-       __raw_writew(val, UWIRE_BASE + (idx << uwire_idx_shift));
+       __raw_writew(val, uwire_base + (idx << uwire_idx_shift));
 }
 
 static inline u16 uwire_read_reg(int idx)
 {
-       return __raw_readw(UWIRE_BASE + (idx << uwire_idx_shift));
+       return __raw_readw(uwire_base + (idx << uwire_idx_shift));
 }
 
 static inline void omap_uwire_configure_mode(u8 cs, unsigned long flags)
@@ -151,7 +155,7 @@ static int wait_uwire_csr_flag(u16 mask, u16 val, int might_not_catch)
                if (time_after(jiffies, max_jiffies)) {
                        printk(KERN_ERR "%s: timeout. reg=%#06x "
                                        "mask=%#06x val=%#06x\n",
-                              __FUNCTION__, w, mask, val);
+                              __func__, w, mask, val);
                        return -1;
                }
                c++;
@@ -437,7 +441,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
        }
        omap_uwire_configure_mode(spi->chip_select, flags);
        pr_debug("%s: uwire flags %02x, armxor %lu KHz, SCK %lu KHz\n",
-                       __FUNCTION__, flags,
+                       __func__, flags,
                        clk_get_rate(uwire->ck) / 1000,
                        rate / 1000);
        status = 0;
@@ -481,7 +485,7 @@ static void uwire_off(struct uwire_spi *uwire)
        spi_master_put(uwire->bitbang.master);
 }
 
-static int uwire_probe(struct platform_device *pdev)
+static int __init uwire_probe(struct platform_device *pdev)
 {
        struct spi_master       *master;
        struct uwire_spi        *uwire;
@@ -492,6 +496,14 @@ static int uwire_probe(struct platform_device *pdev)
                return -ENODEV;
 
        uwire = spi_master_get_devdata(master);
+
+       uwire_base = ioremap(UWIRE_BASE_PHYS, UWIRE_IO_SIZE);
+       if (!uwire_base) {
+               dev_dbg(&pdev->dev, "can't ioremap UWIRE\n");
+               spi_master_put(master);
+               return -ENOMEM;
+       }
+
        dev_set_drvdata(&pdev->dev, uwire);
 
        uwire->ck = clk_get(&pdev->dev, "armxor_ck");
@@ -520,12 +532,14 @@ static int uwire_probe(struct platform_device *pdev)
        uwire->bitbang.txrx_bufs = uwire_txrx;
 
        status = spi_bitbang_start(&uwire->bitbang);
-       if (status < 0)
+       if (status < 0) {
                uwire_off(uwire);
+               iounmap(uwire_base);
+       }
        return status;
 }
 
-static int uwire_remove(struct platform_device *pdev)
+static int __exit uwire_remove(struct platform_device *pdev)
 {
        struct uwire_spi        *uwire = dev_get_drvdata(&pdev->dev);
        int                     status;
@@ -534,17 +548,19 @@ static int uwire_remove(struct platform_device *pdev)
 
        status = spi_bitbang_stop(&uwire->bitbang);
        uwire_off(uwire);
+       iounmap(uwire_base);
        return status;
 }
 
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:omap_uwire");
+
 static struct platform_driver uwire_driver = {
        .driver = {
                .name           = "omap_uwire",
-               .bus            = &platform_bus_type,
                .owner          = THIS_MODULE,
        },
-       .probe          = uwire_probe,
-       .remove         = uwire_remove,
+       .remove         = __exit_p(uwire_remove),
        // suspend ... unuse ck
        // resume ... use ck
 };
@@ -566,7 +582,7 @@ static int __init omap_uwire_init(void)
                omap_writel(val | 0x00AAA000, OMAP730_IO_CONF_9);
        }
 
-       return platform_driver_register(&uwire_driver);
+       return platform_driver_probe(&uwire_driver, uwire_probe);
 }
 
 static void __exit omap_uwire_exit(void)