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 | 2e7c6dc | 2006-04-03 07:53:40 -0300 | [diff] [blame] | 6 | Mauro Carvalho Chehab <mchehab@infradead.org> |
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> |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 27 | #include <linux/usb.h> |
| 28 | #include <linux/vmalloc.h> |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 29 | #include <media/v4l2-common.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 | |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 35 | static unsigned int core_debug; |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 36 | module_param(core_debug, int, 0644); |
| 37 | MODULE_PARM_DESC(core_debug, "enable debug messages [core]"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 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, \ |
Harvey Harrison | d80e134 | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 42 | dev->name, __func__ , ##arg); } while (0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 43 | |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 44 | static unsigned int reg_debug; |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 45 | module_param(reg_debug, int, 0644); |
| 46 | MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 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, \ |
Harvey Harrison | d80e134 | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 51 | dev->name, __func__ , ##arg); } while (0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 52 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 53 | static int alt = EM28XX_PINOUT; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 54 | module_param(alt, int, 0644); |
| 55 | MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); |
| 56 | |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 57 | /* FIXME */ |
| 58 | #define em28xx_isocdbg(fmt, arg...) do {\ |
| 59 | if (core_debug) \ |
| 60 | printk(KERN_INFO "%s %s :"fmt, \ |
| 61 | dev->name, __func__ , ##arg); } while (0) |
| 62 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 63 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 64 | * em28xx_read_reg_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 65 | * reads data from the usb device specifying bRequest |
| 66 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 67 | 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] | 68 | char *buf, int len) |
| 69 | { |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 70 | int ret; |
| 71 | int pipe = usb_rcvctrlpipe(dev->udev, 0); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 72 | |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 73 | if (dev->state & DEV_DISCONNECTED) |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 74 | return -ENODEV; |
| 75 | |
| 76 | if (len > URB_MAX_CTRL_SIZE) |
| 77 | return -EINVAL; |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 78 | |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 79 | if (reg_debug) { |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 80 | printk(KERN_DEBUG "(pipe 0x%08x): " |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 81 | "IN: %02x %02x %02x %02x %02x %02x %02x %02x ", |
| 82 | pipe, |
| 83 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 84 | req, 0, 0, |
| 85 | reg & 0xff, reg >> 8, |
| 86 | len & 0xff, len >> 8); |
| 87 | } |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 88 | |
Mauro Carvalho Chehab | f2a2e49 | 2008-11-19 06:17:44 -0300 | [diff] [blame] | 89 | mutex_lock(&dev->ctrl_urb_lock); |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 90 | ret = usb_control_msg(dev->udev, pipe, req, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 91 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 92 | 0x0000, reg, dev->urb_buf, len, HZ); |
| 93 | if (ret < 0) { |
| 94 | if (reg_debug) |
| 95 | printk(" failed!\n"); |
Mauro Carvalho Chehab | f2a2e49 | 2008-11-19 06:17:44 -0300 | [diff] [blame] | 96 | mutex_unlock(&dev->ctrl_urb_lock); |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | if (len) |
| 101 | memcpy(buf, dev->urb_buf, len); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 102 | |
Mauro Carvalho Chehab | f2a2e49 | 2008-11-19 06:17:44 -0300 | [diff] [blame] | 103 | mutex_unlock(&dev->ctrl_urb_lock); |
| 104 | |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 105 | if (reg_debug) { |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 106 | int byte; |
| 107 | |
| 108 | printk("<<<"); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 109 | for (byte = 0; byte < len; byte++) |
Mauro Carvalho Chehab | 82ac4f8 | 2008-04-17 21:46:14 -0300 | [diff] [blame] | 110 | printk(" %02x", (unsigned char)buf[byte]); |
Mauro Carvalho Chehab | 82ac4f8 | 2008-04-17 21:46:14 -0300 | [diff] [blame] | 111 | printk("\n"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | return ret; |
| 115 | } |
| 116 | |
| 117 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 118 | * em28xx_read_reg_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 119 | * reads data from the usb device specifying bRequest |
| 120 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 121 | 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] | 122 | { |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 123 | int ret; |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 124 | u8 val; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 125 | |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 126 | ret = em28xx_read_reg_req_len(dev, req, reg, &val, 1); |
| 127 | if (ret < 0) |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 128 | return ret; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 129 | |
| 130 | return val; |
| 131 | } |
| 132 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 133 | int em28xx_read_reg(struct em28xx *dev, u16 reg) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 134 | { |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 135 | return em28xx_read_reg_req(dev, USB_REQ_GET_STATUS, reg); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | /* |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 139 | * em28xx_write_regs_req() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 140 | * sends data to the usb device, specifying bRequest |
| 141 | */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 142 | 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] | 143 | int len) |
| 144 | { |
| 145 | int ret; |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 146 | int pipe = usb_sndctrlpipe(dev->udev, 0); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 147 | |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 148 | if (dev->state & DEV_DISCONNECTED) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 149 | return -ENODEV; |
| 150 | |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 151 | if ((len < 1) || (len > URB_MAX_CTRL_SIZE)) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 152 | return -EINVAL; |
Markus Rechberger | 9f38724 | 2006-02-07 06:49:11 -0200 | [diff] [blame] | 153 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 154 | if (reg_debug) { |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 155 | int byte; |
| 156 | |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 157 | printk(KERN_DEBUG "(pipe 0x%08x): " |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 158 | "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>", |
| 159 | pipe, |
| 160 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 161 | req, 0, 0, |
| 162 | reg & 0xff, reg >> 8, |
| 163 | len & 0xff, len >> 8); |
| 164 | |
| 165 | for (byte = 0; byte < len; byte++) |
| 166 | printk(" %02x", (unsigned char)buf[byte]); |
Mauro Carvalho Chehab | 82ac4f8 | 2008-04-17 21:46:14 -0300 | [diff] [blame] | 167 | printk("\n"); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 168 | } |
| 169 | |
Mauro Carvalho Chehab | f2a2e49 | 2008-11-19 06:17:44 -0300 | [diff] [blame] | 170 | mutex_lock(&dev->ctrl_urb_lock); |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 171 | memcpy(dev->urb_buf, buf, len); |
Mauro Carvalho Chehab | 9e5d676 | 2008-11-26 09:58:48 -0300 | [diff] [blame] | 172 | ret = usb_control_msg(dev->udev, pipe, req, |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 173 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 174 | 0x0000, reg, dev->urb_buf, len, HZ); |
Mauro Carvalho Chehab | f2a2e49 | 2008-11-19 06:17:44 -0300 | [diff] [blame] | 175 | mutex_unlock(&dev->ctrl_urb_lock); |
Mauro Carvalho Chehab | c4a9879 | 2008-11-18 14:51:08 -0300 | [diff] [blame] | 176 | |
Mauro Carvalho Chehab | 89b329e | 2008-04-17 21:42:14 -0300 | [diff] [blame] | 177 | if (dev->wait_after_write) |
| 178 | msleep(dev->wait_after_write); |
| 179 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 180 | return ret; |
| 181 | } |
| 182 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 183 | 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] | 184 | { |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 185 | int rc; |
| 186 | |
| 187 | rc = em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len); |
| 188 | |
| 189 | /* Stores GPO/GPIO values at the cache, if changed |
| 190 | Only write values should be stored, since input on a GPIO |
| 191 | register will return the input bits. |
| 192 | Not sure what happens on reading GPO register. |
| 193 | */ |
| 194 | if (rc >= 0) { |
Devin Heitmueller | 6a1acc3 | 2008-11-12 02:05:06 -0300 | [diff] [blame] | 195 | if (reg == dev->reg_gpo_num) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 196 | dev->reg_gpo = buf[0]; |
Devin Heitmueller | 6a1acc3 | 2008-11-12 02:05:06 -0300 | [diff] [blame] | 197 | else if (reg == dev->reg_gpio_num) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 198 | dev->reg_gpio = buf[0]; |
| 199 | } |
| 200 | |
| 201 | return rc; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 202 | } |
| 203 | |
Devin Heitmueller | b697248 | 2008-11-20 09:52:20 -0300 | [diff] [blame] | 204 | /* Write a single register */ |
| 205 | int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val) |
| 206 | { |
| 207 | return em28xx_write_regs(dev, reg, &val, 1); |
| 208 | } |
| 209 | |
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_write_reg_bits() |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 212 | * sets only some bits (specified by bitmask) of a register, by first reading |
| 213 | * the actual value |
| 214 | */ |
Adrian Bunk | 532fe65 | 2008-01-28 22:10:48 -0300 | [diff] [blame] | 215 | static 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] | 216 | u8 bitmask) |
| 217 | { |
| 218 | int oldval; |
| 219 | u8 newval; |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 220 | |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 221 | /* Uses cache for gpo/gpio registers */ |
Devin Heitmueller | 6a1acc3 | 2008-11-12 02:05:06 -0300 | [diff] [blame] | 222 | if (reg == dev->reg_gpo_num) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 223 | oldval = dev->reg_gpo; |
Devin Heitmueller | 6a1acc3 | 2008-11-12 02:05:06 -0300 | [diff] [blame] | 224 | else if (reg == dev->reg_gpio_num) |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 225 | oldval = dev->reg_gpio; |
| 226 | else |
| 227 | oldval = em28xx_read_reg(dev, reg); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 228 | |
| 229 | if (oldval < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 230 | return oldval; |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 231 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 232 | newval = (((u8) oldval) & ~bitmask) | (val & bitmask); |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 233 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 234 | return em28xx_write_regs(dev, reg, &newval, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | /* |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 238 | * em28xx_is_ac97_ready() |
| 239 | * Checks if ac97 is ready |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 240 | */ |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 241 | static int em28xx_is_ac97_ready(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 242 | { |
Mauro Carvalho Chehab | 00b8730 | 2008-02-06 18:34:13 -0300 | [diff] [blame] | 243 | int ret, i; |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 244 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 245 | /* Wait up to 50 ms for AC97 command to complete */ |
| 246 | for (i = 0; i < 10; i++, msleep(5)) { |
| 247 | ret = em28xx_read_reg(dev, EM28XX_R43_AC97BUSY); |
| 248 | if (ret < 0) |
| 249 | return ret; |
| 250 | |
| 251 | if (!(ret & 0x01)) |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | em28xx_warn("AC97 command still being executed: not handled properly!\n"); |
| 256 | return -EBUSY; |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * em28xx_read_ac97() |
| 261 | * write a 16 bit value to the specified AC97 address (LSB first!) |
| 262 | */ |
Mauro Carvalho Chehab | 531c98e | 2008-12-22 13:18:27 -0300 | [diff] [blame] | 263 | int em28xx_read_ac97(struct em28xx *dev, u8 reg) |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 264 | { |
| 265 | int ret; |
| 266 | u8 addr = (reg & 0x7f) | 0x80; |
| 267 | u16 val; |
| 268 | |
| 269 | ret = em28xx_is_ac97_ready(dev); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 270 | if (ret < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 271 | return ret; |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 272 | |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 273 | ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 274 | if (ret < 0) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 275 | return ret; |
Mauro Carvalho Chehab | 00b8730 | 2008-02-06 18:34:13 -0300 | [diff] [blame] | 276 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 277 | ret = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R40_AC97LSB, |
| 278 | (u8 *)&val, sizeof(val)); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 279 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 280 | if (ret < 0) |
| 281 | return ret; |
| 282 | return le16_to_cpu(val); |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * em28xx_write_ac97() |
| 287 | * write a 16 bit value to the specified AC97 address (LSB first!) |
| 288 | */ |
Mauro Carvalho Chehab | 531c98e | 2008-12-22 13:18:27 -0300 | [diff] [blame] | 289 | int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val) |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 290 | { |
| 291 | int ret; |
| 292 | u8 addr = reg & 0x7f; |
| 293 | __le16 value; |
| 294 | |
| 295 | value = cpu_to_le16(val); |
| 296 | |
| 297 | ret = em28xx_is_ac97_ready(dev); |
| 298 | if (ret < 0) |
| 299 | return ret; |
| 300 | |
| 301 | ret = em28xx_write_regs(dev, EM28XX_R40_AC97LSB, (u8 *) &value, 2); |
| 302 | if (ret < 0) |
| 303 | return ret; |
| 304 | |
| 305 | ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1); |
| 306 | if (ret < 0) |
| 307 | return ret; |
| 308 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 309 | return 0; |
| 310 | } |
| 311 | |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 312 | struct em28xx_vol_table { |
| 313 | enum em28xx_amux mux; |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 314 | u8 reg; |
| 315 | }; |
| 316 | |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 317 | static struct em28xx_vol_table inputs[] = { |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 318 | { EM28XX_AMUX_VIDEO, AC97_VIDEO_VOL }, |
| 319 | { EM28XX_AMUX_LINE_IN, AC97_LINEIN_VOL }, |
| 320 | { EM28XX_AMUX_PHONE, AC97_PHONE_VOL }, |
| 321 | { EM28XX_AMUX_MIC, AC97_MIC_VOL }, |
| 322 | { EM28XX_AMUX_CD, AC97_CD_VOL }, |
| 323 | { EM28XX_AMUX_AUX, AC97_AUX_VOL }, |
| 324 | { EM28XX_AMUX_PCM_OUT, AC97_PCM_OUT_VOL }, |
| 325 | }; |
| 326 | |
| 327 | static int set_ac97_input(struct em28xx *dev) |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 328 | { |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 329 | int ret, i; |
| 330 | enum em28xx_amux amux = dev->ctl_ainput; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 331 | |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 332 | /* EM28XX_AMUX_VIDEO2 is a special case used to indicate that |
| 333 | em28xx should point to LINE IN, while AC97 should use VIDEO |
| 334 | */ |
| 335 | if (amux == EM28XX_AMUX_VIDEO2) |
Mauro Carvalho Chehab | f1990a9 | 2008-11-20 12:10:44 -0300 | [diff] [blame] | 336 | amux = EM28XX_AMUX_VIDEO; |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 337 | |
| 338 | /* Mute all entres but the one that were selected */ |
| 339 | for (i = 0; i < ARRAY_SIZE(inputs); i++) { |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 340 | if (amux == inputs[i].mux) |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 341 | ret = em28xx_write_ac97(dev, inputs[i].reg, 0x0808); |
| 342 | else |
| 343 | ret = em28xx_write_ac97(dev, inputs[i].reg, 0x8000); |
| 344 | |
| 345 | if (ret < 0) |
| 346 | em28xx_warn("couldn't setup AC97 register %d\n", |
| 347 | inputs[i].reg); |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 348 | } |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 349 | return 0; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 350 | } |
| 351 | |
Mauro Carvalho Chehab | 00b8730 | 2008-02-06 18:34:13 -0300 | [diff] [blame] | 352 | static int em28xx_set_audio_source(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 353 | { |
Andrew Morton | 1685a6f | 2008-02-05 07:37:21 -0300 | [diff] [blame] | 354 | int ret; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 355 | u8 input; |
| 356 | |
Mauro Carvalho Chehab | 505b6d0 | 2008-11-25 09:39:50 -0300 | [diff] [blame] | 357 | if (dev->board.is_em2800) { |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 358 | if (dev->ctl_ainput == EM28XX_AMUX_VIDEO) |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 359 | input = EM2800_AUDIO_SRC_TUNER; |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 360 | else |
| 361 | input = EM2800_AUDIO_SRC_LINE; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 362 | |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 363 | ret = em28xx_write_regs(dev, EM2800_R08_AUDIOSRC, &input, 1); |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 364 | if (ret < 0) |
| 365 | return ret; |
| 366 | } |
| 367 | |
Mauro Carvalho Chehab | 505b6d0 | 2008-11-25 09:39:50 -0300 | [diff] [blame] | 368 | if (dev->board.has_msp34xx) |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 369 | input = EM28XX_AUDIO_SRC_TUNER; |
| 370 | else { |
| 371 | switch (dev->ctl_ainput) { |
| 372 | case EM28XX_AMUX_VIDEO: |
| 373 | input = EM28XX_AUDIO_SRC_TUNER; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 374 | break; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 375 | default: |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 376 | input = EM28XX_AUDIO_SRC_LINE; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
Vitaly Wool | 2bd1d9e | 2009-03-04 08:27:52 -0300 | [diff] [blame] | 381 | if (dev->board.mute_gpio && dev->mute) |
| 382 | em28xx_gpio_set(dev, dev->board.mute_gpio); |
| 383 | else |
| 384 | em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio); |
| 385 | |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 386 | ret = em28xx_write_reg_bits(dev, EM28XX_R0E_AUDIOSRC, input, 0xc0); |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 387 | if (ret < 0) |
| 388 | return ret; |
Mauro Carvalho Chehab | 00b8730 | 2008-02-06 18:34:13 -0300 | [diff] [blame] | 389 | msleep(5); |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 390 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 391 | switch (dev->audio_mode.ac97) { |
| 392 | case EM28XX_NO_AC97: |
| 393 | break; |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 394 | default: |
| 395 | ret = set_ac97_input(dev); |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 396 | } |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 397 | |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 398 | return ret; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 399 | } |
| 400 | |
Mauro Carvalho Chehab | 26cdc76 | 2009-01-05 01:00:40 -0300 | [diff] [blame] | 401 | static const struct em28xx_vol_table outputs[] = { |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 402 | { EM28XX_AOUT_MASTER, AC97_MASTER_VOL }, |
| 403 | { EM28XX_AOUT_LINE, AC97_LINE_LEVEL_VOL }, |
| 404 | { EM28XX_AOUT_MONO, AC97_MASTER_MONO_VOL }, |
| 405 | { EM28XX_AOUT_LFE, AC97_LFE_MASTER_VOL }, |
| 406 | { EM28XX_AOUT_SURR, AC97_SURR_MASTER_VOL }, |
Mauro Carvalho Chehab | 35ae6f0 | 2008-11-20 12:40:51 -0300 | [diff] [blame] | 407 | }; |
| 408 | |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 409 | int em28xx_audio_analog_set(struct em28xx *dev) |
| 410 | { |
Mauro Carvalho Chehab | 35ae6f0 | 2008-11-20 12:40:51 -0300 | [diff] [blame] | 411 | int ret, i; |
Mauro Carvalho Chehab | a2070c6 | 2008-11-25 07:05:06 -0300 | [diff] [blame] | 412 | u8 xclk; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 413 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 414 | if (!dev->audio_mode.has_audio) |
| 415 | return 0; |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 416 | |
Mauro Carvalho Chehab | 5faff78 | 2008-11-20 09:06:09 -0300 | [diff] [blame] | 417 | /* It is assumed that all devices use master volume for output. |
| 418 | It would be possible to use also line output. |
| 419 | */ |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 420 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
Mauro Carvalho Chehab | 35ae6f0 | 2008-11-20 12:40:51 -0300 | [diff] [blame] | 421 | /* Mute all outputs */ |
| 422 | for (i = 0; i < ARRAY_SIZE(outputs); i++) { |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 423 | ret = em28xx_write_ac97(dev, outputs[i].reg, 0x8000); |
Mauro Carvalho Chehab | 35ae6f0 | 2008-11-20 12:40:51 -0300 | [diff] [blame] | 424 | if (ret < 0) |
| 425 | em28xx_warn("couldn't setup AC97 register %d\n", |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 426 | outputs[i].reg); |
Mauro Carvalho Chehab | 35ae6f0 | 2008-11-20 12:40:51 -0300 | [diff] [blame] | 427 | } |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 428 | } |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 429 | |
Mauro Carvalho Chehab | 505b6d0 | 2008-11-25 09:39:50 -0300 | [diff] [blame] | 430 | xclk = dev->board.xclk & 0x7f; |
Mauro Carvalho Chehab | 3abee53 | 2008-01-05 17:01:41 -0300 | [diff] [blame] | 431 | if (!dev->mute) |
Robert Krakora | 8ed06fd | 2009-01-18 21:44:46 -0300 | [diff] [blame] | 432 | xclk |= EM28XX_XCLK_AUDIO_UNMUTE; |
Mauro Carvalho Chehab | 3abee53 | 2008-01-05 17:01:41 -0300 | [diff] [blame] | 433 | |
Mauro Carvalho Chehab | a2070c6 | 2008-11-25 07:05:06 -0300 | [diff] [blame] | 434 | ret = em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk); |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 435 | if (ret < 0) |
| 436 | return ret; |
Mauro Carvalho Chehab | 3abee53 | 2008-01-05 17:01:41 -0300 | [diff] [blame] | 437 | msleep(10); |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 438 | |
| 439 | /* Selects the proper audio input */ |
| 440 | ret = em28xx_set_audio_source(dev); |
| 441 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 442 | /* Sets volume */ |
| 443 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { |
| 444 | int vol; |
| 445 | |
Robert Krakora | 7e4b15e | 2009-01-18 21:45:28 -0300 | [diff] [blame] | 446 | em28xx_write_ac97(dev, AC97_POWER_DOWN_CTRL, 0x4200); |
| 447 | em28xx_write_ac97(dev, AC97_EXT_AUD_CTRL, 0x0031); |
| 448 | em28xx_write_ac97(dev, AC97_PCM_IN_SRATE, 0xbb80); |
| 449 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 450 | /* LSB: left channel - both channels with the same level */ |
| 451 | vol = (0x1f - dev->volume) | ((0x1f - dev->volume) << 8); |
| 452 | |
| 453 | /* Mute device, if needed */ |
| 454 | if (dev->mute) |
| 455 | vol |= 0x8000; |
| 456 | |
| 457 | /* Sets volume */ |
Mauro Carvalho Chehab | e879b8e | 2008-11-20 13:39:39 -0300 | [diff] [blame] | 458 | for (i = 0; i < ARRAY_SIZE(outputs); i++) { |
| 459 | if (dev->ctl_aoutput & outputs[i].mux) |
| 460 | ret = em28xx_write_ac97(dev, outputs[i].reg, |
| 461 | vol); |
| 462 | if (ret < 0) |
| 463 | em28xx_warn("couldn't setup AC97 register %d\n", |
| 464 | outputs[i].reg); |
| 465 | } |
Mauro Carvalho Chehab | 8866f9c | 2009-01-12 21:50:52 -0300 | [diff] [blame] | 466 | |
| 467 | if (dev->ctl_aoutput & EM28XX_AOUT_PCM_IN) { |
| 468 | int sel = ac97_return_record_select(dev->ctl_aoutput); |
| 469 | |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 470 | /* Use the same input for both left and right |
| 471 | channels */ |
Mauro Carvalho Chehab | 8866f9c | 2009-01-12 21:50:52 -0300 | [diff] [blame] | 472 | sel |= (sel << 8); |
| 473 | |
| 474 | em28xx_write_ac97(dev, AC97_RECORD_SELECT, sel); |
| 475 | } |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 476 | } |
Mauro Carvalho Chehab | 00b8730 | 2008-02-06 18:34:13 -0300 | [diff] [blame] | 477 | |
Mauro Carvalho Chehab | 539c96d | 2008-01-05 09:53:54 -0300 | [diff] [blame] | 478 | return ret; |
| 479 | } |
| 480 | EXPORT_SYMBOL_GPL(em28xx_audio_analog_set); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 481 | |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 482 | int em28xx_audio_setup(struct em28xx *dev) |
| 483 | { |
| 484 | int vid1, vid2, feat, cfg; |
Mauro Carvalho Chehab | 16c7bca | 2008-11-20 08:56:19 -0300 | [diff] [blame] | 485 | u32 vid; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 486 | |
Devin Heitmueller | 62f3e69 | 2008-12-29 22:43:55 -0300 | [diff] [blame] | 487 | if (dev->chip_id == CHIP_ID_EM2870 || dev->chip_id == CHIP_ID_EM2874) { |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 488 | /* Digital only device - don't load any alsa module */ |
| 489 | dev->audio_mode.has_audio = 0; |
| 490 | dev->has_audio_class = 0; |
| 491 | dev->has_alsa_audio = 0; |
| 492 | return 0; |
| 493 | } |
| 494 | |
| 495 | /* If device doesn't support Usb Audio Class, use vendor class */ |
| 496 | if (!dev->has_audio_class) |
| 497 | dev->has_alsa_audio = 1; |
| 498 | |
| 499 | dev->audio_mode.has_audio = 1; |
| 500 | |
| 501 | /* See how this device is configured */ |
| 502 | cfg = em28xx_read_reg(dev, EM28XX_R00_CHIPCFG); |
Devin Heitmueller | 1cdc639 | 2009-06-09 23:40:39 -0300 | [diff] [blame] | 503 | em28xx_info("Config register raw data: 0x%02x\n", cfg); |
| 504 | if (cfg < 0) { |
| 505 | /* Register read error? */ |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 506 | cfg = EM28XX_CHIPCFG_AC97; /* Be conservative */ |
Devin Heitmueller | 1cdc639 | 2009-06-09 23:40:39 -0300 | [diff] [blame] | 507 | } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == 0x00) { |
| 508 | /* The device doesn't have vendor audio at all */ |
| 509 | dev->has_alsa_audio = 0; |
| 510 | dev->audio_mode.has_audio = 0; |
| 511 | return 0; |
| 512 | } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == |
| 513 | EM28XX_CHIPCFG_I2S_3_SAMPRATES) { |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 514 | em28xx_info("I2S Audio (3 sample rates)\n"); |
| 515 | dev->audio_mode.i2s_3rates = 1; |
Devin Heitmueller | 1cdc639 | 2009-06-09 23:40:39 -0300 | [diff] [blame] | 516 | } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == |
| 517 | EM28XX_CHIPCFG_I2S_5_SAMPRATES) { |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 518 | em28xx_info("I2S Audio (5 sample rates)\n"); |
| 519 | dev->audio_mode.i2s_5rates = 1; |
| 520 | } |
| 521 | |
Devin Heitmueller | de84830 | 2008-12-30 00:17:09 -0300 | [diff] [blame] | 522 | if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) != EM28XX_CHIPCFG_AC97) { |
| 523 | /* Skip the code that does AC97 vendor detection */ |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 524 | dev->audio_mode.ac97 = EM28XX_NO_AC97; |
| 525 | goto init_audio; |
| 526 | } |
| 527 | |
| 528 | dev->audio_mode.ac97 = EM28XX_AC97_OTHER; |
| 529 | |
| 530 | vid1 = em28xx_read_ac97(dev, AC97_VENDOR_ID1); |
| 531 | if (vid1 < 0) { |
| 532 | /* Device likely doesn't support AC97 */ |
| 533 | em28xx_warn("AC97 chip type couldn't be determined\n"); |
| 534 | goto init_audio; |
| 535 | } |
| 536 | |
| 537 | vid2 = em28xx_read_ac97(dev, AC97_VENDOR_ID2); |
| 538 | if (vid2 < 0) |
| 539 | goto init_audio; |
| 540 | |
Mauro Carvalho Chehab | 16c7bca | 2008-11-20 08:56:19 -0300 | [diff] [blame] | 541 | vid = vid1 << 16 | vid2; |
| 542 | |
| 543 | dev->audio_mode.ac97_vendor_id = vid; |
| 544 | em28xx_warn("AC97 vendor ID = 0x%08x\n", vid); |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 545 | |
| 546 | feat = em28xx_read_ac97(dev, AC97_RESET); |
| 547 | if (feat < 0) |
| 548 | goto init_audio; |
| 549 | |
| 550 | dev->audio_mode.ac97_feat = feat; |
| 551 | em28xx_warn("AC97 features = 0x%04x\n", feat); |
| 552 | |
Mauro Carvalho Chehab | 16c7bca | 2008-11-20 08:56:19 -0300 | [diff] [blame] | 553 | /* Try to identify what audio processor we have */ |
| 554 | if ((vid == 0xffffffff) && (feat == 0x6a90)) |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 555 | dev->audio_mode.ac97 = EM28XX_AC97_EM202; |
Mauro Carvalho Chehab | 209acc0 | 2008-11-20 12:49:33 -0300 | [diff] [blame] | 556 | else if ((vid >> 8) == 0x838476) |
| 557 | dev->audio_mode.ac97 = EM28XX_AC97_SIGMATEL; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 558 | |
| 559 | init_audio: |
| 560 | /* Reports detected AC97 processor */ |
| 561 | switch (dev->audio_mode.ac97) { |
| 562 | case EM28XX_NO_AC97: |
| 563 | em28xx_info("No AC97 audio processor\n"); |
| 564 | break; |
| 565 | case EM28XX_AC97_EM202: |
| 566 | em28xx_info("Empia 202 AC97 audio processor detected\n"); |
| 567 | break; |
Mauro Carvalho Chehab | 209acc0 | 2008-11-20 12:49:33 -0300 | [diff] [blame] | 568 | case EM28XX_AC97_SIGMATEL: |
| 569 | em28xx_info("Sigmatel audio processor detected(stac 97%02x)\n", |
| 570 | dev->audio_mode.ac97_vendor_id & 0xff); |
| 571 | break; |
Mauro Carvalho Chehab | 3564394 | 2008-11-19 12:01:33 -0300 | [diff] [blame] | 572 | case EM28XX_AC97_OTHER: |
| 573 | em28xx_warn("Unknown AC97 audio processor detected!\n"); |
| 574 | break; |
| 575 | default: |
| 576 | break; |
| 577 | } |
| 578 | |
| 579 | return em28xx_audio_analog_set(dev); |
| 580 | } |
| 581 | EXPORT_SYMBOL_GPL(em28xx_audio_setup); |
| 582 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 583 | int em28xx_colorlevels_set_default(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 584 | { |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 585 | em28xx_write_reg(dev, EM28XX_R20_YGAIN, 0x10); /* contrast */ |
| 586 | em28xx_write_reg(dev, EM28XX_R21_YOFFSET, 0x00); /* brightness */ |
| 587 | em28xx_write_reg(dev, EM28XX_R22_UVGAIN, 0x10); /* saturation */ |
| 588 | em28xx_write_reg(dev, EM28XX_R23_UOFFSET, 0x00); |
| 589 | em28xx_write_reg(dev, EM28XX_R24_VOFFSET, 0x00); |
| 590 | em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, 0x00); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 591 | |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 592 | em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20); |
| 593 | em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20); |
| 594 | em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20); |
| 595 | em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20); |
| 596 | em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00); |
| 597 | em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00); |
| 598 | return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 599 | } |
| 600 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 601 | int em28xx_capture_start(struct em28xx *dev, int start) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 602 | { |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 603 | int rc; |
Devin Heitmueller | ebef13d | 2008-11-12 02:05:24 -0300 | [diff] [blame] | 604 | |
| 605 | if (dev->chip_id == CHIP_ID_EM2874) { |
| 606 | /* The Transport Stream Enable Register moved in em2874 */ |
| 607 | if (!start) { |
| 608 | rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE, |
| 609 | 0x00, |
| 610 | EM2874_TS1_CAPTURE_ENABLE); |
| 611 | return rc; |
| 612 | } |
| 613 | |
| 614 | /* Enable Transport Stream */ |
| 615 | rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE, |
| 616 | EM2874_TS1_CAPTURE_ENABLE, |
| 617 | EM2874_TS1_CAPTURE_ENABLE); |
| 618 | return rc; |
| 619 | } |
| 620 | |
| 621 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 622 | /* FIXME: which is the best order? */ |
| 623 | /* video registers are sampled by VREF */ |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 624 | rc = em28xx_write_reg_bits(dev, EM28XX_R0C_USBSUSP, |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 625 | start ? 0x10 : 0x00, 0x10); |
| 626 | if (rc < 0) |
| 627 | return rc; |
| 628 | |
| 629 | if (!start) { |
| 630 | /* disable video capture */ |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 631 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x27); |
Mauro Carvalho Chehab | 102a0b0 | 2008-04-17 21:40:45 -0300 | [diff] [blame] | 632 | return rc; |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 633 | } |
| 634 | |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 635 | /* enable video capture */ |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 636 | rc = em28xx_write_reg(dev, 0x48, 0x00); |
Mauro Carvalho Chehab | 102a0b0 | 2008-04-17 21:40:45 -0300 | [diff] [blame] | 637 | |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 638 | if (dev->mode == EM28XX_ANALOG_MODE) |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 639 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67); |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 640 | else |
Mauro Carvalho Chehab | 2a29a0d | 2008-11-26 16:28:42 -0300 | [diff] [blame] | 641 | rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37); |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 642 | |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 643 | msleep(6); |
Mauro Carvalho Chehab | ee6e3a8 | 2008-04-17 21:37:31 -0300 | [diff] [blame] | 644 | |
| 645 | return rc; |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 646 | } |
| 647 | |
Mauro Carvalho Chehab | bddcf63 | 2008-12-20 09:06:37 -0300 | [diff] [blame] | 648 | int em28xx_set_outfmt(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 649 | { |
Mauro Carvalho Chehab | bddcf63 | 2008-12-20 09:06:37 -0300 | [diff] [blame] | 650 | int ret; |
| 651 | |
| 652 | ret = em28xx_write_reg_bits(dev, EM28XX_R27_OUTFMT, |
Mauro Carvalho Chehab | 579d315 | 2009-07-14 12:33:25 -0300 | [diff] [blame] | 653 | dev->format->reg | 0x20, 0xff); |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 654 | if (ret < 0) |
| 655 | return ret; |
| 656 | |
Mauro Carvalho Chehab | 579d315 | 2009-07-14 12:33:25 -0300 | [diff] [blame] | 657 | ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, dev->vinmode); |
Mauro Carvalho Chehab | bddcf63 | 2008-12-20 09:06:37 -0300 | [diff] [blame] | 658 | if (ret < 0) |
| 659 | return ret; |
| 660 | |
Mauro Carvalho Chehab | 579d315 | 2009-07-14 12:33:25 -0300 | [diff] [blame] | 661 | return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, dev->vinctl); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 662 | } |
| 663 | |
Adrian Bunk | adcb0fa | 2006-05-22 10:31:42 -0300 | [diff] [blame] | 664 | static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, |
| 665 | u8 ymin, u8 ymax) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 666 | { |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 667 | em28xx_coredbg("em28xx Scale: (%d,%d)-(%d,%d)\n", |
| 668 | xmin, ymin, xmax, ymax); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 669 | |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 670 | em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1); |
| 671 | em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1); |
| 672 | em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1); |
| 673 | return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 674 | } |
| 675 | |
Adrian Bunk | adcb0fa | 2006-05-22 10:31:42 -0300 | [diff] [blame] | 676 | static 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] | 677 | u16 width, u16 height) |
| 678 | { |
| 679 | u8 cwidth = width; |
| 680 | u8 cheight = height; |
| 681 | u8 overflow = (height >> 7 & 0x02) | (width >> 8 & 0x01); |
| 682 | |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 683 | em28xx_coredbg("em28xx Area Set: (%d,%d)\n", |
| 684 | (width | (overflow & 2) << 7), |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 685 | (height | (overflow & 1) << 8)); |
| 686 | |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 687 | em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1); |
| 688 | em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1); |
| 689 | em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1); |
| 690 | em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1); |
| 691 | return em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 692 | } |
| 693 | |
Adrian Bunk | adcb0fa | 2006-05-22 10:31:42 -0300 | [diff] [blame] | 694 | static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 695 | { |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 696 | u8 mode; |
| 697 | /* the em2800 scaler only supports scaling down to 50% */ |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 698 | |
Mauro Carvalho Chehab | 5569996 | 2009-07-13 20:15:02 -0300 | [diff] [blame] | 699 | if (dev->board.is_em2800) { |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 700 | mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 701 | } else { |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 702 | u8 buf[2]; |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 703 | |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 704 | buf[0] = h; |
| 705 | buf[1] = h >> 8; |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 706 | em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2); |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 707 | |
Sascha Sommer | 52c02fc | 2005-11-08 21:38:10 -0800 | [diff] [blame] | 708 | buf[0] = v; |
| 709 | buf[1] = v >> 8; |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 710 | em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 711 | /* it seems that both H and V scalers must be active |
| 712 | to work correctly */ |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 713 | mode = (h || v) ? 0x30 : 0x00; |
Sascha Sommer | 74458e6 | 2005-11-08 21:37:33 -0800 | [diff] [blame] | 714 | } |
Mauro Carvalho Chehab | 41facaa | 2008-04-17 21:44:58 -0300 | [diff] [blame] | 715 | return em28xx_write_reg_bits(dev, EM28XX_R26_COMPR, mode, 0x30); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | /* FIXME: this only function read values from dev */ |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 719 | int em28xx_resolution_set(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 720 | { |
| 721 | int width, height; |
| 722 | width = norm_maxw(dev); |
| 723 | height = norm_maxh(dev) >> 1; |
| 724 | |
Mauro Carvalho Chehab | bddcf63 | 2008-12-20 09:06:37 -0300 | [diff] [blame] | 725 | em28xx_set_outfmt(dev); |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 726 | |
| 727 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 728 | em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); |
| 729 | em28xx_capture_area_set(dev, 0, 0, width >> 2, height >> 2); |
Mauro Carvalho Chehab | 02e7804 | 2009-06-29 11:35:05 -0300 | [diff] [blame] | 730 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 731 | return em28xx_scaler_set(dev, dev->hscale, dev->vscale); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 732 | } |
| 733 | |
Mauro Carvalho Chehab | 3acf280 | 2005-11-08 21:38:27 -0800 | [diff] [blame] | 734 | int em28xx_set_alternate(struct em28xx *dev) |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 735 | { |
| 736 | int errCode, prev_alt = dev->alt; |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 737 | int i; |
Mauro Carvalho Chehab | 44dc733 | 2008-04-13 15:11:08 -0300 | [diff] [blame] | 738 | unsigned int min_pkt_size = dev->width * 2 + 4; |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 739 | |
Sascha Sommer | 2c4a07b | 2008-04-22 14:45:47 -0300 | [diff] [blame] | 740 | /* When image size is bigger than a certain value, |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 741 | the frame size should be increased, otherwise, only |
| 742 | green screen will be received. |
| 743 | */ |
Mauro Carvalho Chehab | 44dc733 | 2008-04-13 15:11:08 -0300 | [diff] [blame] | 744 | if (dev->width * 2 * dev->height > 720 * 240 * 2) |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 745 | min_pkt_size *= 2; |
| 746 | |
Sascha Sommer | 2c4a07b | 2008-04-22 14:45:47 -0300 | [diff] [blame] | 747 | for (i = 0; i < dev->num_alt; i++) { |
| 748 | /* stop when the selected alt setting offers enough bandwidth */ |
| 749 | if (dev->alt_max_pkt_size[i] >= min_pkt_size) { |
| 750 | dev->alt = i; |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 751 | break; |
Sascha Sommer | 2c4a07b | 2008-04-22 14:45:47 -0300 | [diff] [blame] | 752 | /* otherwise make sure that we end up with the maximum bandwidth |
| 753 | because the min_pkt_size equation might be wrong... |
| 754 | */ |
| 755 | } else if (dev->alt_max_pkt_size[i] > |
| 756 | dev->alt_max_pkt_size[dev->alt]) |
| 757 | dev->alt = i; |
| 758 | } |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 759 | |
| 760 | if (dev->alt != prev_alt) { |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 761 | em28xx_coredbg("minimum isoc packet size: %u (alt=%d)\n", |
| 762 | min_pkt_size, dev->alt); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 763 | dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt]; |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 764 | em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", |
| 765 | dev->alt, dev->max_pkt_size); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 766 | errCode = usb_set_interface(dev->udev, 0, dev->alt); |
| 767 | if (errCode < 0) { |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 768 | em28xx_errdev("cannot change alternate number to %d (error=%i)\n", |
Mauro Carvalho Chehab | 3687e1e | 2008-02-08 15:44:25 -0300 | [diff] [blame] | 769 | dev->alt, errCode); |
akpm@osdl.org | a6c2ba2 | 2005-11-08 21:37:07 -0800 | [diff] [blame] | 770 | return errCode; |
| 771 | } |
| 772 | } |
| 773 | return 0; |
| 774 | } |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 775 | |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 776 | int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio) |
| 777 | { |
| 778 | int rc = 0; |
| 779 | |
| 780 | if (!gpio) |
| 781 | return rc; |
| 782 | |
Mauro Carvalho Chehab | 2fe3e2e | 2008-11-27 09:10:40 -0300 | [diff] [blame] | 783 | if (dev->mode != EM28XX_SUSPEND) { |
| 784 | em28xx_write_reg(dev, 0x48, 0x00); |
| 785 | if (dev->mode == EM28XX_ANALOG_MODE) |
| 786 | em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67); |
| 787 | else |
| 788 | em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37); |
| 789 | msleep(6); |
| 790 | } |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 791 | |
| 792 | /* Send GPIO reset sequences specified at board entry */ |
| 793 | while (gpio->sleep >= 0) { |
| 794 | if (gpio->reg >= 0) { |
| 795 | rc = em28xx_write_reg_bits(dev, |
| 796 | gpio->reg, |
| 797 | gpio->val, |
| 798 | gpio->mask); |
| 799 | if (rc < 0) |
| 800 | return rc; |
| 801 | } |
| 802 | if (gpio->sleep > 0) |
| 803 | msleep(gpio->sleep); |
| 804 | |
| 805 | gpio++; |
| 806 | } |
| 807 | return rc; |
| 808 | } |
| 809 | |
| 810 | int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode) |
| 811 | { |
| 812 | if (dev->mode == set_mode) |
| 813 | return 0; |
| 814 | |
Mauro Carvalho Chehab | 2fe3e2e | 2008-11-27 09:10:40 -0300 | [diff] [blame] | 815 | if (set_mode == EM28XX_SUSPEND) { |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 816 | dev->mode = set_mode; |
Mauro Carvalho Chehab | 2fe3e2e | 2008-11-27 09:10:40 -0300 | [diff] [blame] | 817 | |
| 818 | /* FIXME: add suspend support for ac97 */ |
| 819 | |
| 820 | return em28xx_gpio_set(dev, dev->board.suspend_gpio); |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | dev->mode = set_mode; |
| 824 | |
| 825 | if (dev->mode == EM28XX_DIGITAL_MODE) |
Mauro Carvalho Chehab | f502e86 | 2008-11-27 09:00:00 -0300 | [diff] [blame] | 826 | return em28xx_gpio_set(dev, dev->board.dvb_gpio); |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 827 | else |
Mauro Carvalho Chehab | f502e86 | 2008-11-27 09:00:00 -0300 | [diff] [blame] | 828 | return em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio); |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 829 | } |
| 830 | EXPORT_SYMBOL_GPL(em28xx_set_mode); |
| 831 | |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 832 | /* ------------------------------------------------------------------ |
| 833 | URB control |
| 834 | ------------------------------------------------------------------*/ |
| 835 | |
| 836 | /* |
| 837 | * IRQ callback, called by URB callback |
| 838 | */ |
| 839 | static void em28xx_irq_callback(struct urb *urb) |
| 840 | { |
| 841 | struct em28xx_dmaqueue *dma_q = urb->context; |
| 842 | struct em28xx *dev = container_of(dma_q, struct em28xx, vidq); |
| 843 | int rc, i; |
| 844 | |
Robert Krakora | aa5a182 | 2009-02-08 13:09:11 -0300 | [diff] [blame] | 845 | switch (urb->status) { |
| 846 | case 0: /* success */ |
| 847 | case -ETIMEDOUT: /* NAK */ |
| 848 | break; |
| 849 | case -ECONNRESET: /* kill */ |
| 850 | case -ENOENT: |
| 851 | case -ESHUTDOWN: |
| 852 | return; |
| 853 | default: /* error */ |
| 854 | em28xx_isocdbg("urb completition error %d.\n", urb->status); |
| 855 | break; |
| 856 | } |
| 857 | |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 858 | /* Copy data from URB */ |
| 859 | spin_lock(&dev->slock); |
| 860 | rc = dev->isoc_ctl.isoc_copy(dev, urb); |
| 861 | spin_unlock(&dev->slock); |
| 862 | |
| 863 | /* Reset urb buffers */ |
| 864 | for (i = 0; i < urb->number_of_packets; i++) { |
| 865 | urb->iso_frame_desc[i].status = 0; |
| 866 | urb->iso_frame_desc[i].actual_length = 0; |
| 867 | } |
| 868 | urb->status = 0; |
| 869 | |
| 870 | urb->status = usb_submit_urb(urb, GFP_ATOMIC); |
| 871 | if (urb->status) { |
Devin Heitmueller | 4269a8e | 2008-04-21 07:01:09 -0300 | [diff] [blame] | 872 | em28xx_isocdbg("urb resubmit failed (error=%i)\n", |
| 873 | urb->status); |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 874 | } |
| 875 | } |
| 876 | |
| 877 | /* |
| 878 | * Stop and Deallocate URBs |
| 879 | */ |
| 880 | void em28xx_uninit_isoc(struct em28xx *dev) |
| 881 | { |
| 882 | struct urb *urb; |
| 883 | int i; |
| 884 | |
| 885 | em28xx_isocdbg("em28xx: called em28xx_uninit_isoc\n"); |
| 886 | |
| 887 | dev->isoc_ctl.nfields = -1; |
| 888 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { |
| 889 | urb = dev->isoc_ctl.urb[i]; |
| 890 | if (urb) { |
Robert Krakora | 9c06210 | 2009-01-25 13:08:07 -0300 | [diff] [blame] | 891 | if (!irqs_disabled()) |
| 892 | usb_kill_urb(urb); |
| 893 | else |
| 894 | usb_unlink_urb(urb); |
| 895 | |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 896 | if (dev->isoc_ctl.transfer_buffer[i]) { |
| 897 | usb_buffer_free(dev->udev, |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 898 | urb->transfer_buffer_length, |
| 899 | dev->isoc_ctl.transfer_buffer[i], |
| 900 | urb->transfer_dma); |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 901 | } |
| 902 | usb_free_urb(urb); |
| 903 | dev->isoc_ctl.urb[i] = NULL; |
| 904 | } |
| 905 | dev->isoc_ctl.transfer_buffer[i] = NULL; |
| 906 | } |
| 907 | |
| 908 | kfree(dev->isoc_ctl.urb); |
| 909 | kfree(dev->isoc_ctl.transfer_buffer); |
| 910 | |
| 911 | dev->isoc_ctl.urb = NULL; |
| 912 | dev->isoc_ctl.transfer_buffer = NULL; |
| 913 | dev->isoc_ctl.num_bufs = 0; |
| 914 | |
| 915 | em28xx_capture_start(dev, 0); |
| 916 | } |
| 917 | EXPORT_SYMBOL_GPL(em28xx_uninit_isoc); |
| 918 | |
| 919 | /* |
| 920 | * Allocate URBs and start IRQ |
| 921 | */ |
| 922 | int em28xx_init_isoc(struct em28xx *dev, int max_packets, |
| 923 | int num_bufs, int max_pkt_size, |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 924 | int (*isoc_copy) (struct em28xx *dev, struct urb *urb)) |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 925 | { |
| 926 | struct em28xx_dmaqueue *dma_q = &dev->vidq; |
| 927 | int i; |
| 928 | int sb_size, pipe; |
| 929 | struct urb *urb; |
| 930 | int j, k; |
| 931 | int rc; |
| 932 | |
| 933 | em28xx_isocdbg("em28xx: called em28xx_prepare_isoc\n"); |
| 934 | |
| 935 | /* De-allocates all pending stuff */ |
| 936 | em28xx_uninit_isoc(dev); |
| 937 | |
| 938 | dev->isoc_ctl.isoc_copy = isoc_copy; |
| 939 | dev->isoc_ctl.num_bufs = num_bufs; |
| 940 | |
| 941 | dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); |
| 942 | if (!dev->isoc_ctl.urb) { |
| 943 | em28xx_errdev("cannot alloc memory for usb buffers\n"); |
| 944 | return -ENOMEM; |
| 945 | } |
| 946 | |
| 947 | dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs, |
| 948 | GFP_KERNEL); |
Janne Grunau | 094f9b4 | 2008-04-24 20:19:22 -0300 | [diff] [blame] | 949 | if (!dev->isoc_ctl.transfer_buffer) { |
Filipe Rosset | 42ef463 | 2009-04-09 18:27:12 -0300 | [diff] [blame] | 950 | em28xx_errdev("cannot allocate memory for usb transfer\n"); |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 951 | kfree(dev->isoc_ctl.urb); |
| 952 | return -ENOMEM; |
| 953 | } |
| 954 | |
| 955 | dev->isoc_ctl.max_pkt_size = max_pkt_size; |
| 956 | dev->isoc_ctl.buf = NULL; |
| 957 | |
| 958 | sb_size = max_packets * dev->isoc_ctl.max_pkt_size; |
| 959 | |
| 960 | /* allocate urbs and transfer buffers */ |
| 961 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { |
| 962 | urb = usb_alloc_urb(max_packets, GFP_KERNEL); |
| 963 | if (!urb) { |
| 964 | em28xx_err("cannot alloc isoc_ctl.urb %i\n", i); |
| 965 | em28xx_uninit_isoc(dev); |
| 966 | return -ENOMEM; |
| 967 | } |
| 968 | dev->isoc_ctl.urb[i] = urb; |
| 969 | |
| 970 | dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev, |
| 971 | sb_size, GFP_KERNEL, &urb->transfer_dma); |
| 972 | if (!dev->isoc_ctl.transfer_buffer[i]) { |
| 973 | em28xx_err("unable to allocate %i bytes for transfer" |
| 974 | " buffer %i%s\n", |
| 975 | sb_size, i, |
Nicola Soranzo | a1a6ee7 | 2009-02-10 23:28:24 -0300 | [diff] [blame] | 976 | in_interrupt() ? " while in int" : ""); |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 977 | em28xx_uninit_isoc(dev); |
| 978 | return -ENOMEM; |
| 979 | } |
| 980 | memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size); |
| 981 | |
| 982 | /* FIXME: this is a hack - should be |
| 983 | 'desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK' |
| 984 | should also be using 'desc.bInterval' |
| 985 | */ |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 986 | pipe = usb_rcvisocpipe(dev->udev, |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 987 | dev->mode == EM28XX_ANALOG_MODE ? 0x82 : 0x84); |
Douglas Schilling Landgraf | 6ea54d9 | 2008-04-17 21:41:10 -0300 | [diff] [blame] | 988 | |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 989 | usb_fill_int_urb(urb, dev->udev, pipe, |
| 990 | dev->isoc_ctl.transfer_buffer[i], sb_size, |
| 991 | em28xx_irq_callback, dma_q, 1); |
| 992 | |
| 993 | urb->number_of_packets = max_packets; |
Devin Heitmueller | 9a4f820 | 2009-03-22 23:41:28 -0300 | [diff] [blame] | 994 | urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 995 | |
| 996 | k = 0; |
| 997 | for (j = 0; j < max_packets; j++) { |
| 998 | urb->iso_frame_desc[j].offset = k; |
| 999 | urb->iso_frame_desc[j].length = |
| 1000 | dev->isoc_ctl.max_pkt_size; |
| 1001 | k += dev->isoc_ctl.max_pkt_size; |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | init_waitqueue_head(&dma_q->wq); |
| 1006 | |
Mauro Carvalho Chehab | c67ec53 | 2008-04-17 21:48:00 -0300 | [diff] [blame] | 1007 | em28xx_capture_start(dev, 1); |
Aidan Thornton | 579f72e | 2008-04-17 21:40:16 -0300 | [diff] [blame] | 1008 | |
| 1009 | /* submit urbs and enables IRQ */ |
| 1010 | for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { |
| 1011 | rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC); |
| 1012 | if (rc) { |
| 1013 | em28xx_err("submit of urb %i failed (error=%i)\n", i, |
| 1014 | rc); |
| 1015 | em28xx_uninit_isoc(dev); |
| 1016 | return rc; |
| 1017 | } |
| 1018 | } |
| 1019 | |
| 1020 | return 0; |
| 1021 | } |
| 1022 | EXPORT_SYMBOL_GPL(em28xx_init_isoc); |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 1023 | |
Devin Heitmueller | d18e2fd | 2009-05-16 17:09:28 -0300 | [diff] [blame] | 1024 | /* Determine the packet size for the DVB stream for the given device |
| 1025 | (underlying value programmed into the eeprom) */ |
| 1026 | int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev) |
| 1027 | { |
| 1028 | unsigned int chip_cfg2; |
| 1029 | unsigned int packet_size = 564; |
| 1030 | |
| 1031 | if (dev->chip_id == CHIP_ID_EM2874) { |
| 1032 | /* FIXME - for now assume 564 like it was before, but the |
| 1033 | em2874 code should be added to return the proper value... */ |
| 1034 | packet_size = 564; |
| 1035 | } else { |
| 1036 | /* TS max packet size stored in bits 1-0 of R01 */ |
| 1037 | chip_cfg2 = em28xx_read_reg(dev, EM28XX_R01_CHIPCFG2); |
| 1038 | switch (chip_cfg2 & EM28XX_CHIPCFG2_TS_PACKETSIZE_MASK) { |
| 1039 | case EM28XX_CHIPCFG2_TS_PACKETSIZE_188: |
| 1040 | packet_size = 188; |
| 1041 | break; |
| 1042 | case EM28XX_CHIPCFG2_TS_PACKETSIZE_376: |
| 1043 | packet_size = 376; |
| 1044 | break; |
| 1045 | case EM28XX_CHIPCFG2_TS_PACKETSIZE_564: |
| 1046 | packet_size = 564; |
| 1047 | break; |
| 1048 | case EM28XX_CHIPCFG2_TS_PACKETSIZE_752: |
| 1049 | packet_size = 752; |
| 1050 | break; |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | em28xx_coredbg("dvb max packet size=%d\n", packet_size); |
| 1055 | return packet_size; |
| 1056 | } |
| 1057 | EXPORT_SYMBOL_GPL(em28xx_isoc_dvb_max_packetsize); |
| 1058 | |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 1059 | /* |
| 1060 | * em28xx_wake_i2c() |
| 1061 | * configure i2c attached devices |
| 1062 | */ |
| 1063 | void em28xx_wake_i2c(struct em28xx *dev) |
| 1064 | { |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 1065 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, reset, 0); |
| 1066 | v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, |
| 1067 | INPUT(dev->ctl_input)->vmux, 0, 0); |
Douglas Schilling Landgraf | f2cf250 | 2009-03-31 17:10:58 -0300 | [diff] [blame] | 1068 | v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0); |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | /* |
| 1072 | * Device control list |
| 1073 | */ |
| 1074 | |
| 1075 | static LIST_HEAD(em28xx_devlist); |
| 1076 | static DEFINE_MUTEX(em28xx_devlist_mutex); |
| 1077 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 1078 | struct em28xx *em28xx_get_device(int minor, |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 1079 | enum v4l2_buf_type *fh_type, |
| 1080 | int *has_radio) |
| 1081 | { |
| 1082 | struct em28xx *h, *dev = NULL; |
Mauro Carvalho Chehab | 1a23f81 | 2008-12-28 22:18:14 -0300 | [diff] [blame] | 1083 | |
| 1084 | *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1085 | *has_radio = 0; |
| 1086 | |
| 1087 | mutex_lock(&em28xx_devlist_mutex); |
| 1088 | list_for_each_entry(h, &em28xx_devlist, devlist) { |
| 1089 | if (h->vdev->minor == minor) |
| 1090 | dev = h; |
| 1091 | if (h->vbi_dev->minor == minor) { |
| 1092 | dev = h; |
| 1093 | *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; |
| 1094 | } |
| 1095 | if (h->radio_dev && |
| 1096 | h->radio_dev->minor == minor) { |
| 1097 | dev = h; |
| 1098 | *has_radio = 1; |
| 1099 | } |
| 1100 | } |
| 1101 | mutex_unlock(&em28xx_devlist_mutex); |
| 1102 | |
| 1103 | return dev; |
| 1104 | } |
| 1105 | |
| 1106 | /* |
| 1107 | * em28xx_realease_resources() |
| 1108 | * unregisters the v4l2,i2c and usb devices |
| 1109 | * called when the device gets disconected or at module unload |
| 1110 | */ |
| 1111 | void em28xx_remove_from_devlist(struct em28xx *dev) |
| 1112 | { |
| 1113 | mutex_lock(&em28xx_devlist_mutex); |
| 1114 | list_del(&dev->devlist); |
| 1115 | mutex_unlock(&em28xx_devlist_mutex); |
| 1116 | }; |
| 1117 | |
| 1118 | void em28xx_add_into_devlist(struct em28xx *dev) |
| 1119 | { |
| 1120 | mutex_lock(&em28xx_devlist_mutex); |
| 1121 | list_add_tail(&dev->devlist, &em28xx_devlist); |
| 1122 | mutex_unlock(&em28xx_devlist_mutex); |
| 1123 | }; |
| 1124 | |
| 1125 | /* |
| 1126 | * Extension interface |
| 1127 | */ |
| 1128 | |
| 1129 | static LIST_HEAD(em28xx_extension_devlist); |
| 1130 | static DEFINE_MUTEX(em28xx_extension_devlist_lock); |
| 1131 | |
| 1132 | int em28xx_register_extension(struct em28xx_ops *ops) |
| 1133 | { |
| 1134 | struct em28xx *dev = NULL; |
| 1135 | |
| 1136 | mutex_lock(&em28xx_devlist_mutex); |
| 1137 | mutex_lock(&em28xx_extension_devlist_lock); |
| 1138 | list_add_tail(&ops->next, &em28xx_extension_devlist); |
| 1139 | list_for_each_entry(dev, &em28xx_devlist, devlist) { |
| 1140 | if (dev) |
| 1141 | ops->init(dev); |
| 1142 | } |
| 1143 | printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name); |
| 1144 | mutex_unlock(&em28xx_extension_devlist_lock); |
| 1145 | mutex_unlock(&em28xx_devlist_mutex); |
| 1146 | return 0; |
| 1147 | } |
| 1148 | EXPORT_SYMBOL(em28xx_register_extension); |
| 1149 | |
| 1150 | void em28xx_unregister_extension(struct em28xx_ops *ops) |
| 1151 | { |
| 1152 | struct em28xx *dev = NULL; |
| 1153 | |
| 1154 | mutex_lock(&em28xx_devlist_mutex); |
| 1155 | list_for_each_entry(dev, &em28xx_devlist, devlist) { |
| 1156 | if (dev) |
| 1157 | ops->fini(dev); |
| 1158 | } |
| 1159 | |
| 1160 | mutex_lock(&em28xx_extension_devlist_lock); |
| 1161 | printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name); |
| 1162 | list_del(&ops->next); |
| 1163 | mutex_unlock(&em28xx_extension_devlist_lock); |
| 1164 | mutex_unlock(&em28xx_devlist_mutex); |
| 1165 | } |
| 1166 | EXPORT_SYMBOL(em28xx_unregister_extension); |
| 1167 | |
| 1168 | void em28xx_init_extension(struct em28xx *dev) |
| 1169 | { |
| 1170 | struct em28xx_ops *ops = NULL; |
| 1171 | |
| 1172 | mutex_lock(&em28xx_extension_devlist_lock); |
| 1173 | if (!list_empty(&em28xx_extension_devlist)) { |
| 1174 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { |
| 1175 | if (ops->init) |
| 1176 | ops->init(dev); |
| 1177 | } |
| 1178 | } |
| 1179 | mutex_unlock(&em28xx_extension_devlist_lock); |
| 1180 | } |
| 1181 | |
| 1182 | void em28xx_close_extension(struct em28xx *dev) |
| 1183 | { |
| 1184 | struct em28xx_ops *ops = NULL; |
| 1185 | |
| 1186 | mutex_lock(&em28xx_extension_devlist_lock); |
| 1187 | if (!list_empty(&em28xx_extension_devlist)) { |
| 1188 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { |
| 1189 | if (ops->fini) |
| 1190 | ops->fini(dev); |
| 1191 | } |
| 1192 | } |
| 1193 | mutex_unlock(&em28xx_extension_devlist_lock); |
| 1194 | } |