USB: r8a66597-hcd: use platform_data instead of module_param

CPU/board specific parameters (PLL clock, vif etc...) can be set
by platform_data instead of module_param.

v2: remove irq_sense member in platform_data because it can OR in
    IRQF_TRIGGER_LOW or IRQF_TRIGGER_FALLING against IORESOURCE_IRQ in
    the struct resource.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Reviewed-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 92 insertions, 50 deletions

diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 3e1216ad86bd..56976cc0352a 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -46,31 +46,10 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Yoshihiro Shimoda");
 MODULE_ALIAS("platform:r8a66597_hcd");
 
-#define DRIVER_VERSION  "10 Apr 2008"
+#define DRIVER_VERSION  "2009-05-26"
 
 static const char hcd_name[] = "r8a66597_hcd";
 
-/* module parameters */
-#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
-static unsigned short clock = XTAL12;
-module_param(clock, ushort, 0644);
-MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
-                "(default=0)");
-#endif
-
-static unsigned short vif = LDRV;
-module_param(vif, ushort, 0644);
-MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
-
-static unsigned short endian;
-module_param(endian, ushort, 0644);
-MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
-
-static unsigned short irq_sense = 0xff;
-module_param(irq_sense, ushort, 0644);
-MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
-                "(default=32)");
-
 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
 static int r8a66597_get_frame(struct usb_hcd *hcd);
 
@@ -136,7 +115,8 @@ static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
                 }
         } while ((tmp & USBE) != USBE);
         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
-        r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
+        r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), XTAL,
+                        SYSCFG0);
 
         i = 0;
         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
@@ -203,6 +183,9 @@ static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 static int enable_controller(struct r8a66597 *r8a66597)
 {
         int ret, port;
+        u16 vif = r8a66597->pdata->vif ? LDRV : 0;
+        u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
+        u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
 
         ret = r8a66597_clock_enable(r8a66597);
         if (ret < 0)
@@ -2418,6 +2401,12 @@ static int __devinit r8a66597_probe(struct platform_device *pdev)
                 goto clean_up;
         }
 
+        if (pdev->dev.platform_data == NULL) {
+                dev_err(&pdev->dev, "no platform data\n");
+                ret = -ENODEV;
+                goto clean_up;
+        }
+
         /* initialize hcd */
         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
         if (!hcd) {
@@ -2428,6 +2417,8 @@ static int __devinit r8a66597_probe(struct platform_device *pdev)
         r8a66597 = hcd_to_r8a66597(hcd);
         memset(r8a66597, 0, sizeof(struct r8a66597));
         dev_set_drvdata(&pdev->dev, r8a66597);
+        r8a66597->pdata = pdev->dev.platform_data;
+        r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
 
 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
@@ -2458,29 +2449,6 @@ static int __devinit r8a66597_probe(struct platform_device *pdev)
 
         hcd->rsrc_start = res->start;
 
-        /* irq_sense setting on cmdline takes precedence over resource
-         * settings, so the introduction of irqflags in IRQ resourse
-         * won't disturb existing setups */
-        switch (irq_sense) {
-                case INTL:
-                        irq_trigger = IRQF_TRIGGER_LOW;
-                        break;
-                case 0:
-                        irq_trigger = IRQF_TRIGGER_FALLING;
-                        break;
-                case 0xff:
-                        if (irq_trigger)
-                                irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
-                                            INTL : 0;
-                        else {
-                                irq_sense = INTL;
-                                irq_trigger = IRQF_TRIGGER_LOW;
-                        }
-                        break;
-                default:
-                        dev_err(&pdev->dev, "Unknown irq_sense value.\n");
-        }
-
         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
         if (ret != 0) {
                 dev_err(&pdev->dev, "Failed to add hcd\n");
diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h
index f49208f1bb74..d72680b433f9 100644
--- a/drivers/usb/host/r8a66597.h
+++ b/drivers/usb/host/r8a66597.h
@@ -30,6 +30,8 @@
 #include <linux/clk.h>
 #endif
 
+#include <linux/usb/r8a66597.h>
+
 #define SYSCFG0         0x00
 #define SYSCFG1         0x02
 #define SYSSTS0         0x04
@@ -488,6 +490,7 @@ struct r8a66597 {
 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
         struct clk *clk;
 #endif
+        struct r8a66597_platdata        *pdata;
         struct r8a66597_device          device0;
         struct r8a66597_root_hub        root_hub[R8A66597_MAX_ROOT_HUB];
         struct list_head                pipe_queue[R8A66597_MAX_NUM_PIPE];
@@ -506,6 +509,7 @@ struct r8a66597 {
         unsigned long child_connect_map[4];
 
         unsigned bus_suspended:1;
+        unsigned irq_sense_low:1;
 };
 
 static inline struct r8a66597 *hcd_to_r8a66597(struct usb_hcd *hcd)
@@ -660,10 +664,36 @@ static inline void r8a66597_port_power(struct r8a66597 *r8a66597, int port,
 {
         unsigned long dvstctr_reg = get_dvstctr_reg(port);
 
-        if (power)
-                r8a66597_bset(r8a66597, VBOUT, dvstctr_reg);
-        else
-                r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg);
+        if (r8a66597->pdata->port_power) {
+                r8a66597->pdata->port_power(port, power);
+        } else {
+                if (power)
+                        r8a66597_bset(r8a66597, VBOUT, dvstctr_reg);
+                else
+                        r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg);
+        }
+}
+
+static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata)
+{
+        u16 clock = 0;
+
+        switch (pdata->xtal) {
+        case R8A66597_PLATDATA_XTAL_12MHZ:
+                clock = XTAL12;
+                break;
+        case R8A66597_PLATDATA_XTAL_24MHZ:
+                clock = XTAL24;
+                break;
+        case R8A66597_PLATDATA_XTAL_48MHZ:
+                clock = XTAL48;
+                break;
+        default:
+                printk(KERN_ERR "r8a66597: platdata clock is wrong.\n");
+                break;
+        }
+
+        return clock;
 }
 
 #define get_pipectr_addr(pipenum)       (PIPE1CTR + (pipenum - 1) * 2)
diff --git a/include/linux/usb/r8a66597.h b/include/linux/usb/r8a66597.h
new file mode 100644
index 000000000000..e9f0384fa20c
--- /dev/null
+++ b/include/linux/usb/r8a66597.h
@@ -0,0 +1,44 @@
+/*
+ * R8A66597 driver platform data
+ *
+ * Copyright (C) 2009  Renesas Solutions Corp.
+ *
+ * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __LINUX_USB_R8A66597_H
+#define __LINUX_USB_R8A66597_H
+
+#define R8A66597_PLATDATA_XTAL_12MHZ    0x01
+#define R8A66597_PLATDATA_XTAL_24MHZ    0x02
+#define R8A66597_PLATDATA_XTAL_48MHZ    0x03
+
+struct r8a66597_platdata {
+        /* This ops can controll port power instead of DVSTCTR register. */
+        void (*port_power)(int port, int power);
+
+        /* (external controller only) set R8A66597_PLATDATA_XTAL_nnMHZ */
+        unsigned        xtal:2;
+
+        /* set one = 3.3V, set zero = 1.5V */
+        unsigned        vif:1;
+
+        /* set one = big endian, set zero = little endian */
+        unsigned        endian:1;
+};
+#endif
+