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Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[karo-tx-linux.git] / drivers / usb / host / r8a66597-hcd.c
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index dac2f7dd69b9bdf3d6febca9b176057b5bf104c2..16667342b3c324f694300c54d3d3532674c417c5 100644 (file)
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -51,10 +51,12 @@ MODULE_ALIAS("platform:r8a66597_hcd");
 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);
@@ -106,11 +108,22 @@ static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
        r8a66597_write(r8a66597, val, devadd_reg);
 }
 
-static int enable_controller(struct r8a66597 *r8a66597)
+static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
 {
        u16 tmp;
        int i = 0;
 
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+       do {
+               r8a66597_write(r8a66597, SCKE, SYSCFG0);
+               tmp = r8a66597_read(r8a66597, SYSCFG0);
+               if (i++ > 1000) {
+                       err("register access fail.");
+                       return -ENXIO;
+               }
+       } while ((tmp & SCKE) != SCKE);
+       r8a66597_write(r8a66597, 0x04, 0x02);
+#else
        do {
                r8a66597_write(r8a66597, USBE, SYSCFG0);
                tmp = r8a66597_read(r8a66597, SYSCFG0);
@@ -132,13 +145,63 @@ static int enable_controller(struct r8a66597 *r8a66597)
                        return -ENXIO;
                }
        } while ((tmp & SCKE) != SCKE);
+#endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
+
+       return 0;
+}
 
-       r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
-       r8a66597_bset(r8a66597, DRPD, SYSCFG1);
+static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
+{
+       r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
+       udelay(1);
+#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+       r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
+       r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
+       r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+#endif
+}
+
+static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
+{
+       u16 val;
+
+       val = port ? DRPD : DCFM | DRPD;
+       r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
+       r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+
+       r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
+       r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
+       r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+}
+
+static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
+{
+       u16 val, tmp;
+
+       r8a66597_write(r8a66597, 0, get_intenb_reg(port));
+       r8a66597_write(r8a66597, 0, get_intsts_reg(port));
+
+       r8a66597_port_power(r8a66597, port, 0);
+
+       do {
+               tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
+               udelay(640);
+       } while (tmp == EDGESTS);
+
+       val = port ? DRPD : DCFM | DRPD;
+       r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
+       r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
+}
+
+static int enable_controller(struct r8a66597 *r8a66597)
+{
+       int ret, port;
+
+       ret = r8a66597_clock_enable(r8a66597);
+       if (ret < 0)
+               return ret;
 
        r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
-       r8a66597_bset(r8a66597, HSE, SYSCFG0);
-       r8a66597_bset(r8a66597, HSE, SYSCFG1);
        r8a66597_bset(r8a66597, USBE, SYSCFG0);
 
        r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
@@ -146,53 +209,30 @@ static int enable_controller(struct r8a66597 *r8a66597)
        r8a66597_bset(r8a66597, BRDY0, BRDYENB);
        r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 
-       r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
-       r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
-
        r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
        r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
        r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
-
        r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 
        r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
-       r8a66597_bclr(r8a66597, DTCHE, INTENB1);
-       r8a66597_bset(r8a66597, ATTCHE, INTENB1);
-       r8a66597_bclr(r8a66597, DTCHE, INTENB2);
-       r8a66597_bset(r8a66597, ATTCHE, INTENB2);
+
+       for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
+               r8a66597_enable_port(r8a66597, port);
 
        return 0;
 }
 
 static void disable_controller(struct r8a66597 *r8a66597)
 {
-       u16 tmp;
+       int port;
 
        r8a66597_write(r8a66597, 0, INTENB0);
-       r8a66597_write(r8a66597, 0, INTENB1);
-       r8a66597_write(r8a66597, 0, INTENB2);
        r8a66597_write(r8a66597, 0, INTSTS0);
-       r8a66597_write(r8a66597, 0, INTSTS1);
-       r8a66597_write(r8a66597, 0, INTSTS2);
 
-       r8a66597_port_power(r8a66597, 0, 0);
-       r8a66597_port_power(r8a66597, 1, 0);
+       for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
+               r8a66597_disable_port(r8a66597, port);
 
-       do {
-               tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
-               udelay(640);
-       } while (tmp == EDGESTS);
-
-       r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
-       r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
-       r8a66597_bclr(r8a66597, HSE, SYSCFG0);
-       r8a66597_bclr(r8a66597, HSE, SYSCFG1);
-
-       r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
-       udelay(1);
-       r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
-       r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
-       r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+       r8a66597_clock_disable(r8a66597);
 }
 
 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
@@ -711,6 +751,7 @@ static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
                                     struct r8a66597_pipe *pipe,
                                     struct urb *urb)
 {
+#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
        int i;
        struct r8a66597_pipe_info *info = &pipe->info;
 
@@ -738,6 +779,7 @@ static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
                        break;
                }
        }
+#endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 }
 
 /* this function must be called with interrupt disabled */
@@ -900,10 +942,19 @@ static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 }
 
 /* this function must be called with interrupt disabled */
-static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
+static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
+                                       u16 syssts)
 {
-       r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
-                                        | (1 << USB_PORT_FEAT_C_CONNECTION);
+       if (syssts == SE0) {
+               r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+               return;
+       }
+
+       if (syssts == FS_JSTS)
+               r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+       else if (syssts == LS_JSTS)
+               r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
+
        r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
        r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 }
@@ -942,7 +993,7 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597,
                                 struct r8a66597_td *td)
 {
        int i;
-       u16 *p = (u16 *)td->urb->setup_packet;
+       __le16 *p = (__le16 *)td->urb->setup_packet;
        unsigned long setup_addr = USBREQ;
 
        r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
@@ -950,7 +1001,7 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597,
        r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 
        for (i = 0; i < 4; i++) {
-               r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
+               r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
                setup_addr += 2;
        }
        r8a66597_write(r8a66597, SUREQ, DCPCTR);
@@ -1045,8 +1096,7 @@ static void prepare_status_packet(struct r8a66597 *r8a66597,
                r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
                r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
-               r8a66597_write(r8a66597, BCLR, CFIFOCTR);
-               r8a66597_write(r8a66597, BVAL, CFIFOCTR);
+               r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
                enable_irq_empty(r8a66597, 0);
        } else {
                r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
@@ -1478,13 +1528,21 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
        }
 }
 
+static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
+{
+       mod_timer(&r8a66597->rh_timer,
+                       jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
+}
+
 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
 {
        struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 
        rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
        rh->scount = R8A66597_MAX_SAMPLING;
-       mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
+       r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
+                                        | (1 << USB_PORT_FEAT_C_CONNECTION);
+       r8a66597_root_hub_start_polling(r8a66597);
 }
 
 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
@@ -1571,37 +1629,28 @@ static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
                if ((tmp & USBRST) == USBRST) {
                        r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
                                      dvstctr_reg);
-                       mod_timer(&r8a66597->rh_timer,
-                                 jiffies + msecs_to_jiffies(50));
+                       r8a66597_root_hub_start_polling(r8a66597);
                } else
                        r8a66597_usb_connect(r8a66597, port);
        }
 
+       if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
+               r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
+               r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+       }
+
        if (rh->scount > 0) {
                tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
                if (tmp == rh->old_syssts) {
                        rh->scount--;
-                       if (rh->scount == 0) {
-                               if (tmp == FS_JSTS) {
-                                       r8a66597_bset(r8a66597, HSE,
-                                                     get_syscfg_reg(port));
-                                       r8a66597_usb_preconnect(r8a66597, port);
-                               } else if (tmp == LS_JSTS) {
-                                       r8a66597_bclr(r8a66597, HSE,
-                                                     get_syscfg_reg(port));
-                                       r8a66597_usb_preconnect(r8a66597, port);
-                               } else if (tmp == SE0)
-                                       r8a66597_bset(r8a66597, ATTCHE,
-                                                     get_intenb_reg(port));
-                       } else {
-                               mod_timer(&r8a66597->rh_timer,
-                                         jiffies + msecs_to_jiffies(50));
-                       }
+                       if (rh->scount == 0)
+                               r8a66597_check_syssts(r8a66597, port, tmp);
+                       else
+                               r8a66597_root_hub_start_polling(r8a66597);
                } else {
                        rh->scount = R8A66597_MAX_SAMPLING;
                        rh->old_syssts = tmp;
-                       mod_timer(&r8a66597->rh_timer,
-                                 jiffies + msecs_to_jiffies(50));
+                       r8a66597_root_hub_start_polling(r8a66597);
                }
        }
 }
@@ -2082,7 +2131,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
        case GetPortStatus:
                if (wIndex > R8A66597_MAX_ROOT_HUB)
                        goto error;
-               *(u32 *)buf = cpu_to_le32(rh->port);
+               *(__le32 *)buf = cpu_to_le32(rh->port);
                break;
        case SetPortFeature:
                if (wIndex > R8A66597_MAX_ROOT_HUB)
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