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authorYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>2007-07-18 10:10:34 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-19 20:46:08 -0400
commite294531dc9f2c1f5291373dcdd5013c0cdcbdee2 (patch)
tree52c04cf3d53d67838b4811a89467184cca2958d1 /drivers/usb/host/r8a66597-hcd.c
parent809a58b896ba07e771adc76a47c83e4ca1969da8 (diff)
USB: r8a66597-hcd: fixes some problem
This patch incorporates some updates. Updates include: - Fix the problem that control transfer might fail - Change from GFP_KERNEL to GFP_ATOMIC - Clean up some coding style issue Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/r8a66597-hcd.c')
-rw-r--r--drivers/usb/host/r8a66597-hcd.c110
1 files changed, 54 insertions, 56 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index a7a7070c6e2a..d60f1985320c 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -35,10 +35,8 @@
35#include <linux/interrupt.h> 35#include <linux/interrupt.h>
36#include <linux/usb.h> 36#include <linux/usb.h>
37#include <linux/platform_device.h> 37#include <linux/platform_device.h>
38 38#include <linux/io.h>
39#include <asm/io.h> 39#include <linux/irq.h>
40#include <asm/irq.h>
41#include <asm/system.h>
42 40
43#include "../core/hcd.h" 41#include "../core/hcd.h"
44#include "r8a66597.h" 42#include "r8a66597.h"
@@ -54,16 +52,21 @@ static const char hcd_name[] = "r8a66597_hcd";
54/* module parameters */ 52/* module parameters */
55static unsigned short clock = XTAL12; 53static unsigned short clock = XTAL12;
56module_param(clock, ushort, 0644); 54module_param(clock, ushort, 0644);
57MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0(default=0)"); 55MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
56 "(default=0)");
57
58static unsigned short vif = LDRV; 58static unsigned short vif = LDRV;
59module_param(vif, ushort, 0644); 59module_param(vif, ushort, 0644);
60MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)"); 60MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
61static unsigned short endian = 0; 61
62static unsigned short endian;
62module_param(endian, ushort, 0644); 63module_param(endian, ushort, 0644);
63MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)"); 64MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
65
64static unsigned short irq_sense = INTL; 66static unsigned short irq_sense = INTL;
65module_param(irq_sense, ushort, 0644); 67module_param(irq_sense, ushort, 0644);
66MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)"); 68MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
69 "(default=32)");
67 70
68static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 71static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
69static int r8a66597_get_frame(struct usb_hcd *hcd); 72static int r8a66597_get_frame(struct usb_hcd *hcd);
@@ -308,7 +311,7 @@ static int make_r8a66597_device(struct r8a66597 *r8a66597,
308 struct r8a66597_device *dev; 311 struct r8a66597_device *dev;
309 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 312 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
310 313
311 dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL); 314 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
312 if (dev == NULL) 315 if (dev == NULL)
313 return -ENOMEM; 316 return -ENOMEM;
314 317
@@ -611,33 +614,33 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
611 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 614 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
612 615
613 memset(array, 0, sizeof(array)); 616 memset(array, 0, sizeof(array));
614 switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 617 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
615 case USB_ENDPOINT_XFER_BULK: 618 case USB_ENDPOINT_XFER_BULK:
616 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 619 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
617 array[i++] = 4; 620 array[i++] = 4;
618 else { 621 else {
619 array[i++] = 3; 622 array[i++] = 3;
620 array[i++] = 5; 623 array[i++] = 5;
621 } 624 }
622 break; 625 break;
623 case USB_ENDPOINT_XFER_INT: 626 case USB_ENDPOINT_XFER_INT:
624 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { 627 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
625 array[i++] = 6; 628 array[i++] = 6;
626 array[i++] = 7; 629 array[i++] = 7;
627 array[i++] = 8; 630 array[i++] = 8;
628 } else 631 } else
629 array[i++] = 9; 632 array[i++] = 9;
630 break; 633 break;
631 case USB_ENDPOINT_XFER_ISOC: 634 case USB_ENDPOINT_XFER_ISOC:
632 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 635 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
633 array[i++] = 2; 636 array[i++] = 2;
634 else 637 else
635 array[i++] = 1; 638 array[i++] = 1;
636 break; 639 break;
637 default: 640 default:
638 err("Illegal type"); 641 err("Illegal type");
639 return 0; 642 return 0;
640 } 643 }
641 644
642 i = 1; 645 i = 1;
643 min = array[0]; 646 min = array[0];
@@ -654,7 +657,7 @@ static u16 get_r8a66597_type(__u8 type)
654{ 657{
655 u16 r8a66597_type; 658 u16 r8a66597_type;
656 659
657 switch(type) { 660 switch (type) {
658 case USB_ENDPOINT_XFER_BULK: 661 case USB_ENDPOINT_XFER_BULK:
659 r8a66597_type = R8A66597_BULK; 662 r8a66597_type = R8A66597_BULK;
660 break; 663 break;
@@ -874,7 +877,7 @@ static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
874{ 877{
875 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION) 878 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
876 | (1 << USB_PORT_FEAT_C_CONNECTION); 879 | (1 << USB_PORT_FEAT_C_CONNECTION);
877 r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port)); 880 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
878 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 881 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
879} 882}
880 883
@@ -917,7 +920,7 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597,
917 920
918 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 921 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
919 DCPMAXP); 922 DCPMAXP);
920 r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1); 923 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
921 924
922 for (i = 0; i < 4; i++) { 925 for (i = 0; i < 4; i++) {
923 r8a66597_write(r8a66597, p[i], setup_addr); 926 r8a66597_write(r8a66597, p[i], setup_addr);
@@ -948,19 +951,18 @@ static void prepare_packet_read(struct r8a66597 *r8a66597,
948 pipe_irq_disable(r8a66597, td->pipenum); 951 pipe_irq_disable(r8a66597, td->pipenum);
949 pipe_setting(r8a66597, td); 952 pipe_setting(r8a66597, td);
950 pipe_stop(r8a66597, td->pipe); 953 pipe_stop(r8a66597, td->pipe);
951 r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), 954 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
952 BRDYSTS);
953 955
954 if (td->pipe->pipetre) { 956 if (td->pipe->pipetre) {
955 r8a66597_write(r8a66597, TRCLR, 957 r8a66597_write(r8a66597, TRCLR,
956 td->pipe->pipetre); 958 td->pipe->pipetre);
957 r8a66597_write(r8a66597, 959 r8a66597_write(r8a66597,
958 (urb->transfer_buffer_length 960 (urb->transfer_buffer_length
959 + td->maxpacket - 1) 961 + td->maxpacket - 1)
960 / td->maxpacket, 962 / td->maxpacket,
961 td->pipe->pipetrn); 963 td->pipe->pipetrn);
962 r8a66597_bset(r8a66597, TRENB, 964 r8a66597_bset(r8a66597, TRENB,
963 td->pipe->pipetre); 965 td->pipe->pipetre);
964 } 966 }
965 967
966 pipe_start(r8a66597, td->pipe); 968 pipe_start(r8a66597, td->pipe);
@@ -991,7 +993,7 @@ static void prepare_packet_write(struct r8a66597 *r8a66597,
991 if (td->pipe->pipetre) 993 if (td->pipe->pipetre)
992 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 994 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
993 } 995 }
994 r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS); 996 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
995 997
996 fifo_change_from_pipe(r8a66597, td->pipe); 998 fifo_change_from_pipe(r8a66597, td->pipe);
997 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 999 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
@@ -1009,21 +1011,21 @@ static void prepare_status_packet(struct r8a66597 *r8a66597,
1009 struct urb *urb = td->urb; 1011 struct urb *urb = td->urb;
1010 1012
1011 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1013 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1014 pipe_stop(r8a66597, td->pipe);
1012 1015
1013 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1016 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1014 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1017 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1015 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1018 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1016 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1019 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1017 r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR); 1020 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1018 r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS); 1021 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1022 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1019 enable_irq_empty(r8a66597, 0); 1023 enable_irq_empty(r8a66597, 0);
1020 } else { 1024 } else {
1021 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1025 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1022 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1026 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1023 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1027 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1024 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1028 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1025 r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS);
1026 r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
1027 enable_irq_ready(r8a66597, 0); 1029 enable_irq_ready(r8a66597, 0);
1028 } 1030 }
1029 enable_irq_nrdy(r8a66597, 0); 1031 enable_irq_nrdy(r8a66597, 0);
@@ -1269,7 +1271,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1269 1271
1270 /* write fifo */ 1272 /* write fifo */
1271 if (pipenum > 0) 1273 if (pipenum > 0)
1272 r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS); 1274 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1273 if (urb->transfer_buffer) { 1275 if (urb->transfer_buffer) {
1274 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1276 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1275 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1277 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
@@ -1362,7 +1364,7 @@ static void irq_pipe_ready(struct r8a66597 *r8a66597)
1362 1364
1363 mask = r8a66597_read(r8a66597, BRDYSTS) 1365 mask = r8a66597_read(r8a66597, BRDYSTS)
1364 & r8a66597_read(r8a66597, BRDYENB); 1366 & r8a66597_read(r8a66597, BRDYENB);
1365 r8a66597_write(r8a66597, (u16)~mask, BRDYSTS); 1367 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1366 if (mask & BRDY0) { 1368 if (mask & BRDY0) {
1367 td = r8a66597_get_td(r8a66597, 0); 1369 td = r8a66597_get_td(r8a66597, 0);
1368 if (td && td->type == USB_PID_IN) 1370 if (td && td->type == USB_PID_IN)
@@ -1397,7 +1399,7 @@ static void irq_pipe_empty(struct r8a66597 *r8a66597)
1397 1399
1398 mask = r8a66597_read(r8a66597, BEMPSTS) 1400 mask = r8a66597_read(r8a66597, BEMPSTS)
1399 & r8a66597_read(r8a66597, BEMPENB); 1401 & r8a66597_read(r8a66597, BEMPENB);
1400 r8a66597_write(r8a66597, (u16)~mask, BEMPSTS); 1402 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1401 if (mask & BEMP0) { 1403 if (mask & BEMP0) {
1402 cfifo_change(r8a66597, 0); 1404 cfifo_change(r8a66597, 0);
1403 td = r8a66597_get_td(r8a66597, 0); 1405 td = r8a66597_get_td(r8a66597, 0);
@@ -1434,7 +1436,7 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1434 1436
1435 mask = r8a66597_read(r8a66597, NRDYSTS) 1437 mask = r8a66597_read(r8a66597, NRDYSTS)
1436 & r8a66597_read(r8a66597, NRDYENB); 1438 & r8a66597_read(r8a66597, NRDYENB);
1437 r8a66597_write(r8a66597, (u16)~mask, NRDYSTS); 1439 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1438 if (mask & NRDY0) { 1440 if (mask & NRDY0) {
1439 cfifo_change(r8a66597, 0); 1441 cfifo_change(r8a66597, 0);
1440 set_urb_error(r8a66597, 0); 1442 set_urb_error(r8a66597, 0);
@@ -1488,14 +1490,14 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1488 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1490 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1489 if (mask2) { 1491 if (mask2) {
1490 if (mask2 & ATTCH) { 1492 if (mask2 & ATTCH) {
1491 r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2); 1493 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1492 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1494 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1493 1495
1494 /* start usb bus sampling */ 1496 /* start usb bus sampling */
1495 start_root_hub_sampling(r8a66597, 1); 1497 start_root_hub_sampling(r8a66597, 1);
1496 } 1498 }
1497 if (mask2 & DTCH) { 1499 if (mask2 & DTCH) {
1498 r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2); 1500 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1499 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1501 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1500 r8a66597_usb_disconnect(r8a66597, 1); 1502 r8a66597_usb_disconnect(r8a66597, 1);
1501 } 1503 }
@@ -1503,24 +1505,24 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1503 1505
1504 if (mask1) { 1506 if (mask1) {
1505 if (mask1 & ATTCH) { 1507 if (mask1 & ATTCH) {
1506 r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1); 1508 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1507 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1509 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1508 1510
1509 /* start usb bus sampling */ 1511 /* start usb bus sampling */
1510 start_root_hub_sampling(r8a66597, 0); 1512 start_root_hub_sampling(r8a66597, 0);
1511 } 1513 }
1512 if (mask1 & DTCH) { 1514 if (mask1 & DTCH) {
1513 r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1); 1515 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1514 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1516 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1515 r8a66597_usb_disconnect(r8a66597, 0); 1517 r8a66597_usb_disconnect(r8a66597, 0);
1516 } 1518 }
1517 if (mask1 & SIGN) { 1519 if (mask1 & SIGN) {
1518 r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1); 1520 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1519 set_urb_error(r8a66597, 0); 1521 set_urb_error(r8a66597, 0);
1520 check_next_phase(r8a66597); 1522 check_next_phase(r8a66597);
1521 } 1523 }
1522 if (mask1 & SACK) { 1524 if (mask1 & SACK) {
1523 r8a66597_write(r8a66597, (u16)~SACK, INTSTS1); 1525 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1524 check_next_phase(r8a66597); 1526 check_next_phase(r8a66597);
1525 } 1527 }
1526 } 1528 }
@@ -1663,13 +1665,9 @@ static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1663static int r8a66597_start(struct usb_hcd *hcd) 1665static int r8a66597_start(struct usb_hcd *hcd)
1664{ 1666{
1665 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1667 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1666 int ret;
1667 1668
1668 hcd->state = HC_STATE_RUNNING; 1669 hcd->state = HC_STATE_RUNNING;
1669 if ((ret = enable_controller(r8a66597)) < 0) 1670 return enable_controller(r8a66597);
1670 return ret;
1671
1672 return 0;
1673} 1671}
1674 1672
1675static void r8a66597_stop(struct usb_hcd *hcd) 1673static void r8a66597_stop(struct usb_hcd *hcd)
@@ -1696,13 +1694,12 @@ static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1696 1694
1697static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1695static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1698 struct urb *urb, 1696 struct urb *urb,
1699 struct usb_host_endpoint *hep, 1697 struct usb_host_endpoint *hep)
1700 gfp_t mem_flags)
1701{ 1698{
1702 struct r8a66597_td *td; 1699 struct r8a66597_td *td;
1703 u16 pipenum; 1700 u16 pipenum;
1704 1701
1705 td = kzalloc(sizeof(struct r8a66597_td), mem_flags); 1702 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1706 if (td == NULL) 1703 if (td == NULL)
1707 return NULL; 1704 return NULL;
1708 1705
@@ -1741,7 +1738,8 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1741 } 1738 }
1742 1739
1743 if (!hep->hcpriv) { 1740 if (!hep->hcpriv) {
1744 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags); 1741 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1742 GFP_ATOMIC);
1745 if (!hep->hcpriv) { 1743 if (!hep->hcpriv) {
1746 ret = -ENOMEM; 1744 ret = -ENOMEM;
1747 goto error; 1745 goto error;
@@ -1755,7 +1753,7 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1755 init_pipe_config(r8a66597, urb); 1753 init_pipe_config(r8a66597, urb);
1756 1754
1757 set_address_zero(r8a66597, urb); 1755 set_address_zero(r8a66597, urb);
1758 td = r8a66597_make_td(r8a66597, urb, hep, mem_flags); 1756 td = r8a66597_make_td(r8a66597, urb, hep);
1759 if (td == NULL) { 1757 if (td == NULL) {
1760 ret = -ENOMEM; 1758 ret = -ENOMEM;
1761 goto error; 1759 goto error;