akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 1 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 2 | em28xx-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 3 | |
Mauro Carvalho Chehab | f7abcd3 | 2005-11-08 21:38:25 -0800 | [diff] [blame] | 4 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> |
| 5 | Markus Rechberger <mrechberger@gmail.com> |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 6 | Mauro Carvalho Chehab <mchehab@brturbo.com.br> |
Mauro Carvalho Chehab | f7abcd3 | 2005-11-08 21:38:25 -0800 | [diff] [blame] | 7 | Sascha Sommer <saschasommer@freenet.de> |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | */ |
| 23 | |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/moduleparam.h> |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 28 | #include <linux/usb.h> |
| 29 | #include <linux/vmalloc.h> |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 30 | |
Mauro Carvalho Chehab | f7abcd3 | 2005-11-08 21:38:25 -0800 | [diff] [blame] | 31 | #include "em28xx.h" |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 32 | |
| 33 | /* #define ENABLE_DEBUG_ISOC_FRAMES */ |
| 34 | |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 35 | static unsigned int core_debug = 0; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 36 | module_param(core_debug,int,0644); |
| 37 | MODULE_PARM_DESC(core_debug,"enable debug messages [core]"); |
| 38 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 39 | #define em28xx_coredbg(fmt, arg...) do {\ |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 40 | if (core_debug) \ |
| 41 | printk(KERN_INFO "%s %s :"fmt, \ |
Jean Delvare | f85c657 | 2005-12-19 08:53:59 -0200 | [diff] [blame] | 42 | dev->name, __FUNCTION__ , ##arg); } while (0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 43 | |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 44 | static unsigned int reg_debug = 0; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 45 | module_param(reg_debug,int,0644); |
| 46 | MODULE_PARM_DESC(reg_debug,"enable debug messages [URB reg]"); |
| 47 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 48 | #define em28xx_regdbg(fmt, arg...) do {\ |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 49 | if (reg_debug) \ |
| 50 | printk(KERN_INFO "%s %s :"fmt, \ |
Jean Delvare | f85c657 | 2005-12-19 08:53:59 -0200 | [diff] [blame] | 51 | dev->name, __FUNCTION__ , ##arg); } while (0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 52 | |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 53 | static unsigned int isoc_debug = 0; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 54 | module_param(isoc_debug,int,0644); |
Paul Vriens | 55b8b2d | 2005-11-08 21:37:29 -0800 | [diff] [blame] | 55 | MODULE_PARM_DESC(isoc_debug,"enable debug messages [isoc transfers]"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 56 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 57 | #define em28xx_isocdbg(fmt, arg...) do {\ |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 58 | if (isoc_debug) \ |
| 59 | printk(KERN_INFO "%s %s :"fmt, \ |
Jean Delvare | f85c657 | 2005-12-19 08:53:59 -0200 | [diff] [blame] | 60 | dev->name, __FUNCTION__ , ##arg); } while (0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 61 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 62 | static int alt = EM28XX_PINOUT; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 63 | module_param(alt, int, 0644); |
| 64 | MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); |
| 65 | |
Mauro Carvalho Chehab | 674434c | 2005-12-12 00:37:28 -0800 | [diff] [blame] | 66 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 67 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 68 | * em28xx_request_buffers() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 69 | * allocate a number of buffers |
| 70 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 71 | u32 em28xx_request_buffers(struct em28xx *dev, u32 count) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 72 | { |
| 73 | const size_t imagesize = PAGE_ALIGN(dev->frame_size); /*needs to be page aligned cause the buffers can be mapped individually! */ |
| 74 | void *buff = NULL; |
| 75 | u32 i; |
Hans Verkuil | e8efb71 | 2006-01-09 15:24:59 -0200 | [diff] [blame] | 76 | em28xx_coredbg("requested %i buffers with size %zi", count, imagesize); |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 77 | if (count > EM28XX_NUM_FRAMES) |
| 78 | count = EM28XX_NUM_FRAMES; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 79 | |
| 80 | dev->num_frames = count; |
| 81 | while (dev->num_frames > 0) { |
Sascha Sommer | 3639c86 | 2005-12-12 00:37:30 -0800 | [diff] [blame] | 82 | if ((buff = vmalloc_32(dev->num_frames * imagesize))) { |
| 83 | memset(buff, 0, dev->num_frames * imagesize); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 84 | break; |
Sascha Sommer | 3639c86 | 2005-12-12 00:37:30 -0800 | [diff] [blame] | 85 | } |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 86 | dev->num_frames--; |
| 87 | } |
| 88 | |
| 89 | for (i = 0; i < dev->num_frames; i++) { |
| 90 | dev->frame[i].bufmem = buff + i * imagesize; |
| 91 | dev->frame[i].buf.index = i; |
| 92 | dev->frame[i].buf.m.offset = i * imagesize; |
| 93 | dev->frame[i].buf.length = dev->frame_size; |
| 94 | dev->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 95 | dev->frame[i].buf.sequence = 0; |
| 96 | dev->frame[i].buf.field = V4L2_FIELD_NONE; |
| 97 | dev->frame[i].buf.memory = V4L2_MEMORY_MMAP; |
| 98 | dev->frame[i].buf.flags = 0; |
| 99 | } |
| 100 | return dev->num_frames; |
| 101 | } |
| 102 | |
| 103 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 104 | * em28xx_queue_unusedframes() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 105 | * add all frames that are not currently in use to the inbuffer queue |
| 106 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 107 | void em28xx_queue_unusedframes(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 108 | { |
| 109 | unsigned long lock_flags; |
| 110 | u32 i; |
| 111 | |
| 112 | for (i = 0; i < dev->num_frames; i++) |
| 113 | if (dev->frame[i].state == F_UNUSED) { |
| 114 | dev->frame[i].state = F_QUEUED; |
| 115 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
| 116 | list_add_tail(&dev->frame[i].frame, &dev->inqueue); |
| 117 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 122 | * em28xx_release_buffers() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 123 | * free frame buffers |
| 124 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 125 | void em28xx_release_buffers(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 126 | { |
| 127 | if (dev->num_frames) { |
Sascha Sommer | 3639c86 | 2005-12-12 00:37:30 -0800 | [diff] [blame] | 128 | vfree(dev->frame[0].bufmem); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 129 | dev->num_frames = 0; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 134 | * em28xx_read_reg_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 135 | * reads data from the usb device specifying bRequest |
| 136 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 137 | int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 138 | char *buf, int len) |
| 139 | { |
| 140 | int ret, byte; |
| 141 | |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 142 | if (dev->state & DEV_DISCONNECTED) |
| 143 | return(-ENODEV); |
| 144 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 145 | em28xx_regdbg("req=%02x, reg=%02x ", req, reg); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 146 | |
| 147 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req, |
| 148 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 149 | 0x0000, reg, buf, len, HZ); |
| 150 | |
| 151 | if (reg_debug){ |
| 152 | printk(ret < 0 ? " failed!\n" : "%02x values: ", ret); |
| 153 | for (byte = 0; byte < len; byte++) { |
| 154 | printk(" %02x", buf[byte]); |
| 155 | } |
| 156 | printk("\n"); |
| 157 | } |
| 158 | |
| 159 | return ret; |
| 160 | } |
| 161 | |
| 162 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 163 | * em28xx_read_reg_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 164 | * reads data from the usb device specifying bRequest |
| 165 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 166 | int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 167 | { |
| 168 | u8 val; |
| 169 | int ret; |
| 170 | |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 171 | if (dev->state & DEV_DISCONNECTED) |
| 172 | return(-ENODEV); |
| 173 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 174 | em28xx_regdbg("req=%02x, reg=%02x:", req, reg); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 175 | |
| 176 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req, |
| 177 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 178 | 0x0000, reg, &val, 1, HZ); |
| 179 | |
| 180 | if (reg_debug) |
| 181 | printk(ret < 0 ? " failed!\n" : "%02x\n", val); |
| 182 | |
| 183 | if (ret < 0) |
| 184 | return ret; |
| 185 | |
| 186 | return val; |
| 187 | } |
| 188 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 189 | int em28xx_read_reg(struct em28xx *dev, u16 reg) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 190 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 191 | return em28xx_read_reg_req(dev, USB_REQ_GET_STATUS, reg); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 195 | * em28xx_write_regs_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 196 | * sends data to the usb device, specifying bRequest |
| 197 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 198 | int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 199 | int len) |
| 200 | { |
| 201 | int ret; |
| 202 | |
| 203 | /*usb_control_msg seems to expect a kmalloced buffer */ |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 204 | unsigned char *bufs; |
| 205 | |
| 206 | if (dev->state & DEV_DISCONNECTED) |
| 207 | return(-ENODEV); |
| 208 | |
| 209 | bufs = kmalloc(len, GFP_KERNEL); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 210 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 211 | em28xx_regdbg("req=%02x reg=%02x:", req, reg); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 212 | |
| 213 | if (reg_debug) { |
| 214 | int i; |
| 215 | for (i = 0; i < len; ++i) |
| 216 | printk (" %02x", (unsigned char)buf[i]); |
| 217 | printk ("\n"); |
| 218 | } |
| 219 | |
| 220 | if (!bufs) |
| 221 | return -ENOMEM; |
| 222 | memcpy(bufs, buf, len); |
| 223 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), req, |
| 224 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 225 | 0x0000, reg, bufs, len, HZ); |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 226 | msleep(5); /* FIXME: magic number */ |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 227 | kfree(bufs); |
| 228 | return ret; |
| 229 | } |
| 230 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 231 | int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 232 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 233 | return em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 237 | * em28xx_write_reg_bits() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 238 | * sets only some bits (specified by bitmask) of a register, by first reading |
| 239 | * the actual value |
| 240 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 241 | int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 242 | u8 bitmask) |
| 243 | { |
| 244 | int oldval; |
| 245 | u8 newval; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 246 | if ((oldval = em28xx_read_reg(dev, reg)) < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 247 | return oldval; |
| 248 | newval = (((u8) oldval) & ~bitmask) | (val & bitmask); |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 249 | return em28xx_write_regs(dev, reg, &newval, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 253 | * em28xx_write_ac97() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 254 | * write a 16 bit value to the specified AC97 address (LSB first!) |
| 255 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 256 | int em28xx_write_ac97(struct em28xx *dev, u8 reg, u8 * val) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 257 | { |
| 258 | int ret; |
| 259 | u8 addr = reg & 0x7f; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 260 | if ((ret = em28xx_write_regs(dev, AC97LSB_REG, val, 2)) < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 261 | return ret; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 262 | if ((ret = em28xx_write_regs(dev, AC97ADDR_REG, &addr, 1)) < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 263 | return ret; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 264 | if ((ret = em28xx_read_reg(dev, AC97BUSY_REG)) < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 265 | return ret; |
| 266 | else if (((u8) ret) & 0x01) { |
Michael Krufky | 3875818 | 2006-01-23 09:59:19 -0200 | [diff] [blame] | 267 | em28xx_warn ("AC97 command still being executed: not handled properly!\n"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 268 | } |
| 269 | return 0; |
| 270 | } |
| 271 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 272 | int em28xx_audio_analog_set(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 273 | { |
| 274 | char s[2] = { 0x00, 0x00 }; |
| 275 | s[0] |= 0x1f - dev->volume; |
| 276 | s[1] |= 0x1f - dev->volume; |
| 277 | if (dev->mute) |
| 278 | s[1] |= 0x80; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 279 | return em28xx_write_ac97(dev, MASTER_AC97, s); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 283 | int em28xx_colorlevels_set_default(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 284 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 285 | em28xx_write_regs(dev, YGAIN_REG, "\x10", 1); /* contrast */ |
| 286 | em28xx_write_regs(dev, YOFFSET_REG, "\x00", 1); /* brightness */ |
| 287 | em28xx_write_regs(dev, UVGAIN_REG, "\x10", 1); /* saturation */ |
| 288 | em28xx_write_regs(dev, UOFFSET_REG, "\x00", 1); |
| 289 | em28xx_write_regs(dev, VOFFSET_REG, "\x00", 1); |
| 290 | em28xx_write_regs(dev, SHARPNESS_REG, "\x00", 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 291 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 292 | em28xx_write_regs(dev, GAMMA_REG, "\x20", 1); |
| 293 | em28xx_write_regs(dev, RGAIN_REG, "\x20", 1); |
| 294 | em28xx_write_regs(dev, GGAIN_REG, "\x20", 1); |
| 295 | em28xx_write_regs(dev, BGAIN_REG, "\x20", 1); |
| 296 | em28xx_write_regs(dev, ROFFSET_REG, "\x00", 1); |
| 297 | em28xx_write_regs(dev, GOFFSET_REG, "\x00", 1); |
| 298 | return em28xx_write_regs(dev, BOFFSET_REG, "\x00", 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 299 | } |
| 300 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 301 | int em28xx_capture_start(struct em28xx *dev, int start) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 302 | { |
| 303 | int ret; |
| 304 | /* FIXME: which is the best order? */ |
| 305 | /* video registers are sampled by VREF */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 306 | if ((ret = em28xx_write_reg_bits(dev, USBSUSP_REG, start ? 0x10 : 0x00, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 307 | 0x10)) < 0) |
| 308 | return ret; |
| 309 | /* enable video capture */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 310 | return em28xx_write_regs(dev, VINENABLE_REG, start ? "\x67" : "\x27", 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 311 | } |
| 312 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 313 | int em28xx_outfmt_set_yuv422(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 314 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 315 | em28xx_write_regs(dev, OUTFMT_REG, "\x34", 1); |
| 316 | em28xx_write_regs(dev, VINMODE_REG, "\x10", 1); |
| 317 | return em28xx_write_regs(dev, VINCTRL_REG, "\x11", 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 318 | } |
| 319 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 320 | int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, u8 ymin, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 321 | u8 ymax) |
| 322 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 323 | em28xx_coredbg("em28xx Scale: (%d,%d)-(%d,%d)\n", xmin, ymin, xmax, ymax); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 324 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 325 | em28xx_write_regs(dev, XMIN_REG, &xmin, 1); |
| 326 | em28xx_write_regs(dev, XMAX_REG, &xmax, 1); |
| 327 | em28xx_write_regs(dev, YMIN_REG, &ymin, 1); |
| 328 | return em28xx_write_regs(dev, YMAX_REG, &ymax, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 329 | } |
| 330 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 331 | int em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 332 | u16 width, u16 height) |
| 333 | { |
| 334 | u8 cwidth = width; |
| 335 | u8 cheight = height; |
| 336 | u8 overflow = (height >> 7 & 0x02) | (width >> 8 & 0x01); |
| 337 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 338 | em28xx_coredbg("em28xx Area Set: (%d,%d)\n", (width | (overflow & 2) << 7), |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 339 | (height | (overflow & 1) << 8)); |
| 340 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 341 | em28xx_write_regs(dev, HSTART_REG, &hstart, 1); |
| 342 | em28xx_write_regs(dev, VSTART_REG, &vstart, 1); |
| 343 | em28xx_write_regs(dev, CWIDTH_REG, &cwidth, 1); |
| 344 | em28xx_write_regs(dev, CHEIGHT_REG, &cheight, 1); |
| 345 | return em28xx_write_regs(dev, OFLOW_REG, &overflow, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 346 | } |
| 347 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 348 | int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 349 | { |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 350 | u8 mode; |
| 351 | /* the em2800 scaler only supports scaling down to 50% */ |
| 352 | if(dev->is_em2800) |
| 353 | mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); |
| 354 | else { |
| 355 | u8 buf[2]; |
| 356 | buf[0] = h; |
| 357 | buf[1] = h >> 8; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 358 | em28xx_write_regs(dev, HSCALELOW_REG, (char *)buf, 2); |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 359 | buf[0] = v; |
| 360 | buf[1] = v >> 8; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 361 | em28xx_write_regs(dev, VSCALELOW_REG, (char *)buf, 2); |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 362 | /* it seems that both H and V scalers must be active to work correctly */ |
| 363 | mode = (h || v)? 0x30: 0x00; |
Sascha Sommer | 74458e6 | 2005-11-08 21:37:33 -0800 | [diff] [blame] | 364 | } |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 365 | return em28xx_write_reg_bits(dev, COMPR_REG, mode, 0x30); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | /* FIXME: this only function read values from dev */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 369 | int em28xx_resolution_set(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 370 | { |
| 371 | int width, height; |
| 372 | width = norm_maxw(dev); |
| 373 | height = norm_maxh(dev) >> 1; |
| 374 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 375 | em28xx_outfmt_set_yuv422(dev); |
| 376 | em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); |
| 377 | em28xx_capture_area_set(dev, 0, 0, width >> 2, height >> 2); |
| 378 | return em28xx_scaler_set(dev, dev->hscale, dev->vscale); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | |
| 382 | /******************* isoc transfer handling ****************************/ |
| 383 | |
| 384 | #ifdef ENABLE_DEBUG_ISOC_FRAMES |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 385 | static void em28xx_isoc_dump(struct urb *urb, struct pt_regs *regs) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 386 | { |
| 387 | int len = 0; |
| 388 | int ntrans = 0; |
| 389 | int i; |
| 390 | |
| 391 | printk(KERN_DEBUG "isocIrq: sf=%d np=%d ec=%x\n", |
| 392 | urb->start_frame, urb->number_of_packets, |
| 393 | urb->error_count); |
| 394 | for (i = 0; i < urb->number_of_packets; i++) { |
| 395 | unsigned char *buf = |
| 396 | urb->transfer_buffer + |
| 397 | urb->iso_frame_desc[i].offset; |
| 398 | int alen = urb->iso_frame_desc[i].actual_length; |
| 399 | if (alen > 0) { |
| 400 | if (buf[0] == 0x88) { |
| 401 | ntrans++; |
| 402 | len += alen; |
| 403 | } else if (buf[0] == 0x22) { |
| 404 | printk(KERN_DEBUG |
| 405 | "= l=%d nt=%d bpp=%d\n", |
| 406 | len - 4 * ntrans, ntrans, |
| 407 | ntrans == 0 ? 0 : len / ntrans); |
| 408 | ntrans = 1; |
| 409 | len = alen; |
| 410 | } else |
| 411 | printk(KERN_DEBUG "!\n"); |
| 412 | } |
| 413 | printk(KERN_DEBUG " n=%d s=%d al=%d %x\n", i, |
| 414 | urb->iso_frame_desc[i].status, |
| 415 | urb->iso_frame_desc[i].actual_length, |
| 416 | (unsigned int) |
| 417 | *((unsigned char *)(urb->transfer_buffer + |
| 418 | urb->iso_frame_desc[i]. |
| 419 | offset))); |
| 420 | } |
| 421 | } |
| 422 | #endif |
| 423 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 424 | static inline int em28xx_isoc_video(struct em28xx *dev,struct em28xx_frame_t **f, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 425 | unsigned long *lock_flags, unsigned char buf) |
| 426 | { |
| 427 | if (!(buf & 0x01)) { |
| 428 | if ((*f)->state == F_GRABBING) { |
| 429 | /*previous frame is incomplete */ |
| 430 | if ((*f)->fieldbytesused < dev->field_size) { |
| 431 | (*f)->state = F_ERROR; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 432 | em28xx_isocdbg ("dropping incomplete bottom field (%i missing bytes)", |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 433 | dev->field_size-(*f)->fieldbytesused); |
| 434 | } else { |
| 435 | (*f)->state = F_DONE; |
| 436 | (*f)->buf.bytesused = dev->frame_size; |
| 437 | } |
| 438 | } |
| 439 | if ((*f)->state == F_DONE || (*f)->state == F_ERROR) { |
| 440 | /* move current frame to outqueue and get next free buffer from inqueue */ |
| 441 | spin_lock_irqsave(&dev-> queue_lock, *lock_flags); |
| 442 | list_move_tail(&(*f)->frame, &dev->outqueue); |
| 443 | if (!list_empty(&dev->inqueue)) |
| 444 | (*f) = list_entry(dev-> inqueue.next, |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 445 | struct em28xx_frame_t,frame); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 446 | else |
| 447 | (*f) = NULL; |
| 448 | spin_unlock_irqrestore(&dev->queue_lock,*lock_flags); |
| 449 | } |
| 450 | if (!(*f)) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 451 | em28xx_isocdbg ("new frame but no buffer is free"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 452 | return -1; |
| 453 | } |
| 454 | do_gettimeofday(&(*f)->buf.timestamp); |
| 455 | (*f)->buf.sequence = ++dev->frame_count; |
| 456 | (*f)->buf.field = V4L2_FIELD_INTERLACED; |
| 457 | (*f)->state = F_GRABBING; |
| 458 | (*f)->buf.bytesused = 0; |
| 459 | (*f)->top_field = 1; |
| 460 | (*f)->fieldbytesused = 0; |
| 461 | } else { |
| 462 | /* acquiring bottom field */ |
| 463 | if ((*f)->state == F_GRABBING) { |
| 464 | if (!(*f)->top_field) { |
| 465 | (*f)->state = F_ERROR; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 466 | em28xx_isocdbg ("unexpected begin of bottom field; discarding it"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 467 | } else if ((*f)-> fieldbytesused < dev->field_size - 172) { |
| 468 | (*f)->state = F_ERROR; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 469 | em28xx_isocdbg ("dropping incomplete top field (%i missing bytes)", |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 470 | dev->field_size-(*f)->fieldbytesused); |
| 471 | } else { |
| 472 | (*f)->top_field = 0; |
| 473 | (*f)->fieldbytesused = 0; |
| 474 | } |
| 475 | } |
| 476 | } |
| 477 | return (0); |
| 478 | } |
| 479 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 480 | static inline void em28xx_isoc_video_copy(struct em28xx *dev, |
| 481 | struct em28xx_frame_t **f, unsigned char *buf, int len) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 482 | { |
| 483 | void *fieldstart, *startwrite, *startread; |
| 484 | int linesdone, currlinedone, offset, lencopy,remain; |
| 485 | |
Mauro Carvalho Chehab | 596d92d | 2005-11-08 21:37:24 -0800 | [diff] [blame] | 486 | if(dev->frame_size != (*f)->buf.length){ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 487 | em28xx_err("frame_size %i and buf.length %i are different!!!\n",dev->frame_size,(*f)->buf.length); |
Mauro Carvalho Chehab | 596d92d | 2005-11-08 21:37:24 -0800 | [diff] [blame] | 488 | return; |
| 489 | } |
| 490 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 491 | if ((*f)->fieldbytesused + len > dev->field_size) |
| 492 | len =dev->field_size - (*f)->fieldbytesused; |
Mauro Carvalho Chehab | feff048 | 2005-11-08 21:38:16 -0800 | [diff] [blame] | 493 | |
| 494 | if (buf[0] != 0x88 && buf[0] != 0x22) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 495 | em28xx_isocdbg("frame is not complete\n"); |
Mauro Carvalho Chehab | feff048 | 2005-11-08 21:38:16 -0800 | [diff] [blame] | 496 | startread = buf; |
| 497 | len+=4; |
| 498 | } else |
| 499 | startread = buf + 4; |
| 500 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 501 | remain = len; |
Mauro Carvalho Chehab | feff048 | 2005-11-08 21:38:16 -0800 | [diff] [blame] | 502 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 503 | if ((*f)->top_field) |
| 504 | fieldstart = (*f)->bufmem; |
| 505 | else |
| 506 | fieldstart = (*f)->bufmem + dev->bytesperline; |
| 507 | |
| 508 | linesdone = (*f)->fieldbytesused / dev->bytesperline; |
| 509 | currlinedone = (*f)->fieldbytesused % dev->bytesperline; |
| 510 | offset = linesdone * dev->bytesperline * 2 + currlinedone; |
| 511 | startwrite = fieldstart + offset; |
| 512 | lencopy = dev->bytesperline - currlinedone; |
| 513 | lencopy = lencopy > remain ? remain : lencopy; |
| 514 | |
| 515 | memcpy(startwrite, startread, lencopy); |
| 516 | remain -= lencopy; |
| 517 | |
| 518 | while (remain > 0) { |
| 519 | startwrite += lencopy + dev->bytesperline; |
| 520 | startread += lencopy; |
| 521 | if (dev->bytesperline > remain) |
| 522 | lencopy = remain; |
| 523 | else |
| 524 | lencopy = dev->bytesperline; |
| 525 | |
| 526 | memcpy(startwrite, startread, lencopy); |
| 527 | remain -= lencopy; |
| 528 | } |
| 529 | |
| 530 | (*f)->fieldbytesused += len; |
| 531 | } |
| 532 | |
| 533 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 534 | * em28xx_isoIrq() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 535 | * handles the incoming isoc urbs and fills the frames from our inqueue |
| 536 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 537 | void em28xx_isocIrq(struct urb *urb, struct pt_regs *regs) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 538 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 539 | struct em28xx *dev = urb->context; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 540 | int i, status; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 541 | struct em28xx_frame_t **f; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 542 | unsigned long lock_flags; |
| 543 | |
| 544 | if (!dev) |
| 545 | return; |
| 546 | #ifdef ENABLE_DEBUG_ISOC_FRAMES |
| 547 | if (isoc_debug>1) |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 548 | em28xx_isoc_dump(urb, regs); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 549 | #endif |
| 550 | |
| 551 | if (urb->status == -ENOENT) |
| 552 | return; |
| 553 | |
| 554 | f = &dev->frame_current; |
| 555 | |
| 556 | if (dev->stream == STREAM_INTERRUPT) { |
| 557 | dev->stream = STREAM_OFF; |
| 558 | if ((*f)) |
| 559 | (*f)->state = F_QUEUED; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 560 | em28xx_isocdbg("stream interrupted"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 561 | wake_up_interruptible(&dev->wait_stream); |
| 562 | } |
| 563 | |
| 564 | if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) |
| 565 | return; |
| 566 | |
| 567 | if (dev->stream == STREAM_ON && !list_empty(&dev->inqueue)) { |
| 568 | if (!(*f)) |
| 569 | (*f) = list_entry(dev->inqueue.next, |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 570 | struct em28xx_frame_t, frame); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 571 | |
| 572 | for (i = 0; i < urb->number_of_packets; i++) { |
| 573 | unsigned char *buf = urb->transfer_buffer + |
| 574 | urb->iso_frame_desc[i].offset; |
| 575 | int len = urb->iso_frame_desc[i].actual_length - 4; |
| 576 | |
| 577 | if (urb->iso_frame_desc[i].status) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 578 | em28xx_isocdbg("data error: [%d] len=%d, status=%d", i, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 579 | urb->iso_frame_desc[i].actual_length, |
| 580 | urb->iso_frame_desc[i].status); |
Mauro Carvalho Chehab | feff048 | 2005-11-08 21:38:16 -0800 | [diff] [blame] | 581 | if (urb->iso_frame_desc[i].status != -EPROTO) |
| 582 | continue; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 583 | } |
| 584 | if (urb->iso_frame_desc[i].actual_length <= 0) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 585 | em28xx_isocdbg("packet %d is empty",i); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 586 | continue; |
| 587 | } |
| 588 | if (urb->iso_frame_desc[i].actual_length > |
| 589 | dev->max_pkt_size) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 590 | em28xx_isocdbg("packet bigger than packet size"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 591 | continue; |
| 592 | } |
| 593 | /*new frame */ |
| 594 | if (buf[0] == 0x22 && buf[1] == 0x5a) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 595 | em28xx_isocdbg("Video frame, length=%i!",len); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 596 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 597 | if (em28xx_isoc_video(dev,f,&lock_flags,buf[2])) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 598 | break; |
| 599 | } else if (buf[0]==0x33 && buf[1]==0x95 && buf[2]==0x00) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 600 | em28xx_isocdbg("VBI HEADER!!!"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | /* actual copying */ |
| 604 | if ((*f)->state == F_GRABBING) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 605 | em28xx_isoc_video_copy(dev,f,buf, len); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 606 | } |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | for (i = 0; i < urb->number_of_packets; i++) { |
| 611 | urb->iso_frame_desc[i].status = 0; |
| 612 | urb->iso_frame_desc[i].actual_length = 0; |
| 613 | } |
| 614 | |
| 615 | urb->status = 0; |
| 616 | if ((status = usb_submit_urb(urb, GFP_ATOMIC))) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 617 | em28xx_errdev("resubmit of urb failed (error=%i)\n", status); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 618 | dev->state |= DEV_MISCONFIGURED; |
| 619 | } |
| 620 | wake_up_interruptible(&dev->wait_frame); |
| 621 | return; |
| 622 | } |
| 623 | |
| 624 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 625 | * em28xx_uninit_isoc() |
| 626 | * deallocates the buffers and urbs allocated during em28xx_init_iosc() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 627 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 628 | void em28xx_uninit_isoc(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 629 | { |
| 630 | int i; |
| 631 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 632 | for (i = 0; i < EM28XX_NUM_BUFS; i++) { |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 633 | if (dev->urb[i]) { |
| 634 | usb_kill_urb(dev->urb[i]); |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 635 | if (dev->transfer_buffer[i]){ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 636 | usb_buffer_free(dev->udev,(EM28XX_NUM_PACKETS*dev->max_pkt_size),dev->transfer_buffer[i],dev->urb[i]->transfer_dma); |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 637 | } |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 638 | usb_free_urb(dev->urb[i]); |
| 639 | } |
| 640 | dev->urb[i] = NULL; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 641 | dev->transfer_buffer[i] = NULL; |
| 642 | } |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 643 | em28xx_capture_start(dev, 0); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 647 | * em28xx_init_isoc() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 648 | * allocates transfer buffers and submits the urbs for isoc transfer |
| 649 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 650 | int em28xx_init_isoc(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 651 | { |
| 652 | /* change interface to 3 which allowes the biggest packet sizes */ |
| 653 | int i, errCode; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 654 | const int sb_size = EM28XX_NUM_PACKETS * dev->max_pkt_size; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 655 | |
| 656 | /* reset streaming vars */ |
| 657 | dev->frame_current = NULL; |
| 658 | dev->frame_count = 0; |
| 659 | |
| 660 | /* allocate urbs */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 661 | for (i = 0; i < EM28XX_NUM_BUFS; i++) { |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 662 | struct urb *urb; |
| 663 | int j, k; |
| 664 | /* allocate transfer buffer */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 665 | urb = usb_alloc_urb(EM28XX_NUM_PACKETS, GFP_KERNEL); |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 666 | if (!urb){ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 667 | em28xx_errdev("cannot alloc urb %i\n", i); |
| 668 | em28xx_uninit_isoc(dev); |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 669 | return -ENOMEM; |
| 670 | } |
| 671 | dev->transfer_buffer[i] = usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,&urb->transfer_dma); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 672 | if (!dev->transfer_buffer[i]) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 673 | em28xx_errdev |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 674 | ("unable to allocate %i bytes for transfer buffer %i\n", |
| 675 | sb_size, i); |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 676 | em28xx_uninit_isoc(dev); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 677 | return -ENOMEM; |
| 678 | } |
| 679 | memset(dev->transfer_buffer[i], 0, sb_size); |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 680 | urb->dev = dev->udev; |
| 681 | urb->context = dev; |
| 682 | urb->pipe = usb_rcvisocpipe(dev->udev, 0x82); |
| 683 | urb->transfer_flags = URB_ISO_ASAP; |
| 684 | urb->interval = 1; |
| 685 | urb->transfer_buffer = dev->transfer_buffer[i]; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 686 | urb->complete = em28xx_isocIrq; |
| 687 | urb->number_of_packets = EM28XX_NUM_PACKETS; |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 688 | urb->transfer_buffer_length = sb_size; |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 689 | for (j = k = 0; j < EM28XX_NUM_PACKETS; |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 690 | j++, k += dev->max_pkt_size) { |
| 691 | urb->iso_frame_desc[j].offset = k; |
| 692 | urb->iso_frame_desc[j].length = |
| 693 | dev->max_pkt_size; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 694 | } |
Markus Rechberger | 02f7427 | 2005-11-08 21:37:46 -0800 | [diff] [blame] | 695 | dev->urb[i] = urb; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | /* submit urbs */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 699 | for (i = 0; i < EM28XX_NUM_BUFS; i++) { |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 700 | errCode = usb_submit_urb(dev->urb[i], GFP_KERNEL); |
| 701 | if (errCode) { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 702 | em28xx_errdev("submit of urb %i failed (error=%i)\n", i, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 703 | errCode); |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 704 | em28xx_uninit_isoc(dev); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 705 | return errCode; |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | return 0; |
| 710 | } |
| 711 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 712 | int em28xx_set_alternate(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 713 | { |
| 714 | int errCode, prev_alt = dev->alt; |
| 715 | dev->alt = alt; |
| 716 | if (dev->alt == 0) { |
| 717 | int i; |
Mauro Carvalho Chehab | 9d4d9c0 | 2005-11-08 21:38:52 -0800 | [diff] [blame] | 718 | for(i=0;i< dev->num_alt; i++) |
Mauro Carvalho Chehab | eac9435 | 2005-11-08 21:38:43 -0800 | [diff] [blame] | 719 | if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->alt]) |
| 720 | dev->alt=i; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | if (dev->alt != prev_alt) { |
| 724 | dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt]; |
Mauro Carvalho Chehab | 9d4d9c0 | 2005-11-08 21:38:52 -0800 | [diff] [blame] | 725 | em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", dev->alt, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 726 | dev->max_pkt_size); |
| 727 | errCode = usb_set_interface(dev->udev, 0, dev->alt); |
| 728 | if (errCode < 0) { |
Mauro Carvalho Chehab | 9d4d9c0 | 2005-11-08 21:38:52 -0800 | [diff] [blame] | 729 | em28xx_errdev ("cannot change alternate number to %d (error=%i)\n", |
| 730 | dev->alt, errCode); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 731 | return errCode; |
| 732 | } |
| 733 | } |
| 734 | return 0; |
| 735 | } |