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Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-core.c')
-rw-r--r--drivers/media/usb/em28xx/em28xx-core.c231
1 files changed, 129 insertions, 102 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c
index 1d0d8cc06103..36d341fb65dd 100644
--- a/drivers/media/usb/em28xx/em28xx-core.c
+++ b/drivers/media/usb/em28xx/em28xx-core.c
@@ -1,26 +1,22 @@
-/*
- em28xx-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
-
- Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
- Markus Rechberger <mrechberger@gmail.com>
- Mauro Carvalho Chehab <mchehab@infradead.org>
- Sascha Sommer <saschasommer@freenet.de>
- Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+// Markus Rechberger <mrechberger@gmail.com>
+// Mauro Carvalho Chehab <mchehab@infradead.org>
+// Sascha Sommer <saschasommer@freenet.de>
+// Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
#include "em28xx.h"
@@ -41,7 +37,7 @@
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
MODULE_VERSION(EM28XX_VERSION);
/* #define ENABLE_DEBUG_ISOC_FRAMES */
@@ -60,7 +56,6 @@ static unsigned int reg_debug;
module_param(reg_debug, int, 0644);
MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
-
#define em28xx_regdbg(fmt, arg...) do { \
if (reg_debug) \
dev_printk(KERN_DEBUG, &dev->intf->dev, \
@@ -97,10 +92,11 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
0x0000, reg, dev->urb_buf, len, HZ);
if (ret < 0) {
em28xx_regdbg("(pipe 0x%08x): IN: %02x %02x %02x %02x %02x %02x %02x %02x failed with error %i\n",
- pipe, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- req, 0, 0,
- reg & 0xff, reg >> 8,
- len & 0xff, len >> 8, ret);
+ pipe,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ req, 0, 0,
+ reg & 0xff, reg >> 8,
+ len & 0xff, len >> 8, ret);
mutex_unlock(&dev->ctrl_urb_lock);
return usb_translate_errors(ret);
}
@@ -111,10 +107,10 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
mutex_unlock(&dev->ctrl_urb_lock);
em28xx_regdbg("(pipe 0x%08x): IN: %02x %02x %02x %02x %02x %02x %02x %02x <<< %*ph\n",
- pipe, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- req, 0, 0,
- reg & 0xff, reg >> 8,
- len & 0xff, len >> 8, len, buf);
+ pipe, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ req, 0, 0,
+ reg & 0xff, reg >> 8,
+ len & 0xff, len >> 8, len, buf);
return ret;
}
@@ -155,7 +151,7 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
if (dev->disconnected)
return -ENODEV;
- if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
+ if (len < 1 || len > URB_MAX_CTRL_SIZE)
return -EINVAL;
mutex_lock(&dev->ctrl_urb_lock);
@@ -341,8 +337,9 @@ static int set_ac97_input(struct em28xx *dev)
int ret, i;
enum em28xx_amux amux = dev->ctl_ainput;
- /* EM28XX_AMUX_VIDEO2 is a special case used to indicate that
- em28xx should point to LINE IN, while AC97 should use VIDEO
+ /*
+ * EM28XX_AMUX_VIDEO2 is a special case used to indicate that
+ * em28xx should point to LINE IN, while AC97 should use VIDEO
*/
if (amux == EM28XX_AMUX_VIDEO2)
amux = EM28XX_AMUX_VIDEO;
@@ -378,9 +375,9 @@ static int em28xx_set_audio_source(struct em28xx *dev)
return ret;
}
- if (dev->board.has_msp34xx)
+ if (dev->has_msp34xx) {
input = EM28XX_AUDIO_SRC_TUNER;
- else {
+ } else {
switch (dev->ctl_ainput) {
case EM28XX_AMUX_VIDEO:
input = EM28XX_AUDIO_SRC_TUNER;
@@ -399,7 +396,7 @@ static int em28xx_set_audio_source(struct em28xx *dev)
ret = em28xx_write_reg_bits(dev, EM28XX_R0E_AUDIOSRC, input, 0xc0);
if (ret < 0)
return ret;
- msleep(5);
+ usleep_range(10000, 11000);
switch (dev->audio_mode.ac97) {
case EM28XX_NO_AC97:
@@ -432,8 +429,9 @@ int em28xx_audio_analog_set(struct em28xx *dev)
if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE)
return 0;
- /* It is assumed that all devices use master volume for output.
- It would be possible to use also line output.
+ /*
+ * It is assumed that all devices use master volume for output.
+ * It would be possible to use also line output.
*/
if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
/* Mute all outputs */
@@ -453,7 +451,7 @@ int em28xx_audio_analog_set(struct em28xx *dev)
ret = em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk);
if (ret < 0)
return ret;
- msleep(10);
+ usleep_range(10000, 11000);
/* Selects the proper audio input */
ret = em28xx_set_audio_source(dev);
@@ -487,8 +485,10 @@ int em28xx_audio_analog_set(struct em28xx *dev)
if (dev->ctl_aoutput & EM28XX_AOUT_PCM_IN) {
int sel = ac97_return_record_select(dev->ctl_aoutput);
- /* Use the same input for both left and right
- channels */
+ /*
+ * Use the same input for both left and right
+ * channels
+ */
sel |= (sel << 8);
em28xx_write_ac97(dev, AC97_REC_SEL, sel);
@@ -539,7 +539,7 @@ int em28xx_audio_setup(struct em28xx *dev)
else
i2s_samplerates = 3;
dev_info(&dev->intf->dev, "I2S Audio (%d sample rate(s))\n",
- i2s_samplerates);
+ i2s_samplerates);
/* Skip the code that does AC97 vendor detection */
dev->audio_mode.ac97 = EM28XX_NO_AC97;
goto init_audio;
@@ -579,7 +579,7 @@ int em28xx_audio_setup(struct em28xx *dev)
dev_warn(&dev->intf->dev, "AC97 features = 0x%04x\n", feat);
/* Try to identify what audio processor we have */
- if (((vid == 0xffffffff) || (vid == 0x83847650)) && (feat == 0x6a90))
+ if ((vid == 0xffffffff || vid == 0x83847650) && feat == 0x6a90)
dev->audio_mode.ac97 = EM28XX_AC97_EM202;
else if ((vid >> 8) == 0x838476)
dev->audio_mode.ac97 = EM28XX_AC97_SIGMATEL;
@@ -638,10 +638,29 @@ int em28xx_capture_start(struct em28xx *dev, int start)
dev->chip_id == CHIP_ID_EM28174 ||
dev->chip_id == CHIP_ID_EM28178) {
/* The Transport Stream Enable Register moved in em2874 */
- rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE,
- start ?
- EM2874_TS1_CAPTURE_ENABLE : 0x00,
- EM2874_TS1_CAPTURE_ENABLE);
+ if (dev->dvb_xfer_bulk) {
+ /* Max Tx Size = 188 * 256 = 48128 - LCM(188,512) * 2 */
+ em28xx_write_reg(dev, (dev->ts == PRIMARY_TS) ?
+ EM2874_R5D_TS1_PKT_SIZE :
+ EM2874_R5E_TS2_PKT_SIZE,
+ 0xff);
+ } else {
+ /* ISOC Maximum Transfer Size = 188 * 5 */
+ em28xx_write_reg(dev, (dev->ts == PRIMARY_TS) ?
+ EM2874_R5D_TS1_PKT_SIZE :
+ EM2874_R5E_TS2_PKT_SIZE,
+ dev->dvb_max_pkt_size_isoc / 188);
+ }
+ if (dev->ts == PRIMARY_TS)
+ rc = em28xx_write_reg_bits(dev,
+ EM2874_R5F_TS_ENABLE,
+ start ? EM2874_TS1_CAPTURE_ENABLE : 0x00,
+ EM2874_TS1_CAPTURE_ENABLE);
+ else
+ rc = em28xx_write_reg_bits(dev,
+ EM2874_R5F_TS_ENABLE,
+ start ? EM2874_TS2_CAPTURE_ENABLE : 0x00,
+ EM2874_TS2_CAPTURE_ENABLE);
} else {
/* FIXME: which is the best order? */
/* video registers are sampled by VREF */
@@ -651,7 +670,7 @@ int em28xx_capture_start(struct em28xx *dev, int start)
return rc;
if (start) {
- if (dev->board.is_webcam)
+ if (dev->is_webcam)
rc = em28xx_write_reg(dev, 0x13, 0x0c);
/* Enable video capture */
@@ -670,7 +689,7 @@ int em28xx_capture_start(struct em28xx *dev, int start)
if (rc < 0)
return rc;
- msleep(6);
+ usleep_range(10000, 11000);
} else {
/* disable video capture */
rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x27);
@@ -691,7 +710,7 @@ int em28xx_capture_start(struct em28xx *dev, int start)
return rc;
}
-int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio)
+int em28xx_gpio_set(struct em28xx *dev, const struct em28xx_reg_seq *gpio)
{
int rc = 0;
@@ -704,7 +723,7 @@ int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio)
em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67);
else
em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37);
- msleep(6);
+ usleep_range(10000, 11000);
}
/* Send GPIO reset sequences specified at board entry */
@@ -748,9 +767,9 @@ int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode)
}
EXPORT_SYMBOL_GPL(em28xx_set_mode);
-/* ------------------------------------------------------------------
- URB control
- ------------------------------------------------------------------*/
+/*
+ *URB control
+ */
/*
* URB completion handler for isoc/bulk transfers
@@ -769,7 +788,7 @@ static void em28xx_irq_callback(struct urb *urb)
case -ESHUTDOWN:
return;
default: /* error */
- em28xx_isocdbg("urb completition error %d.\n", urb->status);
+ em28xx_isocdbg("urb completion error %d.\n", urb->status);
break;
}
@@ -800,11 +819,9 @@ void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode)
{
struct urb *urb;
struct em28xx_usb_bufs *usb_bufs;
- struct usb_device *udev = interface_to_usbdev(dev->intf);
int i;
- em28xx_isocdbg("em28xx: called em28xx_uninit_usb_xfer in mode %d\n",
- mode);
+ em28xx_isocdbg("called %s in mode %d\n", __func__, mode);
if (mode == EM28XX_DIGITAL_MODE)
usb_bufs = &dev->usb_ctl.digital_bufs;
@@ -819,23 +836,16 @@ void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode)
else
usb_unlink_urb(urb);
- if (usb_bufs->transfer_buffer[i]) {
- usb_free_coherent(udev,
- urb->transfer_buffer_length,
- usb_bufs->transfer_buffer[i],
- urb->transfer_dma);
- }
usb_free_urb(urb);
usb_bufs->urb[i] = NULL;
}
- usb_bufs->transfer_buffer[i] = NULL;
}
kfree(usb_bufs->urb);
- kfree(usb_bufs->transfer_buffer);
+ kfree(usb_bufs->buf);
usb_bufs->urb = NULL;
- usb_bufs->transfer_buffer = NULL;
+ usb_bufs->buf = NULL;
usb_bufs->num_bufs = 0;
em28xx_capture_start(dev, 0);
@@ -851,7 +861,7 @@ void em28xx_stop_urbs(struct em28xx *dev)
struct urb *urb;
struct em28xx_usb_bufs *isoc_bufs = &dev->usb_ctl.digital_bufs;
- em28xx_isocdbg("em28xx: called em28xx_stop_urbs\n");
+ em28xx_isocdbg("called %s\n", __func__);
for (i = 0; i < isoc_bufs->num_bufs; i++) {
urb = isoc_bufs->urb[i];
@@ -880,10 +890,12 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
int sb_size, pipe;
int j, k;
- em28xx_isocdbg("em28xx: called em28xx_alloc_isoc in mode %d\n", mode);
+ em28xx_isocdbg("em28xx: called %s in mode %d\n", __func__, mode);
- /* Check mode and if we have an endpoint for the selected
- transfer type, select buffer */
+ /*
+ * Check mode and if we have an endpoint for the selected
+ * transfer type, select buffer
+ */
if (mode == EM28XX_DIGITAL_MODE) {
if ((xfer_bulk && !dev->dvb_ep_bulk) ||
(!xfer_bulk && !dev->dvb_ep_isoc)) {
@@ -912,14 +924,13 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
usb_bufs->num_bufs = num_bufs;
- usb_bufs->urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
+ usb_bufs->urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
if (!usb_bufs->urb)
return -ENOMEM;
- usb_bufs->transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
- GFP_KERNEL);
- if (!usb_bufs->transfer_buffer) {
- kfree(usb_bufs->urb);
+ usb_bufs->buf = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
+ if (!usb_bufs->buf) {
+ kfree(usb_bufs->buf);
return -ENOMEM;
}
@@ -942,37 +953,36 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
}
usb_bufs->urb[i] = urb;
- usb_bufs->transfer_buffer[i] = usb_alloc_coherent(udev,
- sb_size, GFP_KERNEL, &urb->transfer_dma);
- if (!usb_bufs->transfer_buffer[i]) {
- dev_err(&dev->intf->dev,
- "unable to allocate %i bytes for transfer buffer %i%s\n",
- sb_size, i,
- in_interrupt() ? " while in int" : "");
+ usb_bufs->buf[i] = kzalloc(sb_size, GFP_KERNEL);
+ if (!usb_bufs->buf[i]) {
em28xx_uninit_usb_xfer(dev, mode);
+
+ for (i--; i >= 0; i--)
+ kfree(usb_bufs->buf[i]);
+
+ kfree(usb_bufs->buf);
+ usb_bufs->buf = NULL;
+
return -ENOMEM;
}
- memset(usb_bufs->transfer_buffer[i], 0, sb_size);
+
+ urb->transfer_flags = URB_FREE_BUFFER;
if (xfer_bulk) { /* bulk */
pipe = usb_rcvbulkpipe(udev,
mode == EM28XX_ANALOG_MODE ?
dev->analog_ep_bulk :
dev->dvb_ep_bulk);
- usb_fill_bulk_urb(urb, udev, pipe,
- usb_bufs->transfer_buffer[i], sb_size,
- em28xx_irq_callback, dev);
- urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+ usb_fill_bulk_urb(urb, udev, pipe, usb_bufs->buf[i],
+ sb_size, em28xx_irq_callback, dev);
} else { /* isoc */
pipe = usb_rcvisocpipe(udev,
mode == EM28XX_ANALOG_MODE ?
dev->analog_ep_isoc :
dev->dvb_ep_isoc);
- usb_fill_int_urb(urb, udev, pipe,
- usb_bufs->transfer_buffer[i], sb_size,
- em28xx_irq_callback, dev, 1);
- urb->transfer_flags = URB_ISO_ASAP |
- URB_NO_TRANSFER_DMA_MAP;
+ usb_fill_int_urb(urb, udev, pipe, usb_bufs->buf[i],
+ sb_size, em28xx_irq_callback, dev, 1);
+ urb->transfer_flags |= URB_ISO_ASAP;
k = 0;
for (j = 0; j < usb_bufs->num_packets; j++) {
urb->iso_frame_desc[j].offset = k;
@@ -1005,8 +1015,7 @@ int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
int rc;
int alloc;
- em28xx_isocdbg("em28xx: called em28xx_init_usb_xfer in mode %d\n",
- mode);
+ em28xx_isocdbg("em28xx: called %s in mode %d\n", __func__, mode);
dev->usb_ctl.urb_data_copy = urb_data_copy;
@@ -1077,7 +1086,11 @@ int em28xx_register_extension(struct em28xx_ops *ops)
mutex_lock(&em28xx_devlist_mutex);
list_add_tail(&ops->next, &em28xx_extension_devlist);
list_for_each_entry(dev, &em28xx_devlist, devlist) {
- ops->init(dev);
+ if (ops->init) {
+ ops->init(dev);
+ if (dev->dev_next)
+ ops->init(dev->dev_next);
+ }
}
mutex_unlock(&em28xx_devlist_mutex);
pr_info("em28xx: Registered (%s) extension\n", ops->name);
@@ -1091,7 +1104,11 @@ void em28xx_unregister_extension(struct em28xx_ops *ops)
mutex_lock(&em28xx_devlist_mutex);
list_for_each_entry(dev, &em28xx_devlist, devlist) {
- ops->fini(dev);
+ if (ops->fini) {
+ if (dev->dev_next)
+ ops->fini(dev->dev_next);
+ ops->fini(dev);
+ }
}
list_del(&ops->next);
mutex_unlock(&em28xx_devlist_mutex);
@@ -1106,8 +1123,11 @@ void em28xx_init_extension(struct em28xx *dev)
mutex_lock(&em28xx_devlist_mutex);
list_add_tail(&dev->devlist, &em28xx_devlist);
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
- if (ops->init)
+ if (ops->init) {
ops->init(dev);
+ if (dev->dev_next)
+ ops->init(dev->dev_next);
+ }
}
mutex_unlock(&em28xx_devlist_mutex);
}
@@ -1118,8 +1138,11 @@ void em28xx_close_extension(struct em28xx *dev)
mutex_lock(&em28xx_devlist_mutex);
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
- if (ops->fini)
+ if (ops->fini) {
+ if (dev->dev_next)
+ ops->fini(dev->dev_next);
ops->fini(dev);
+ }
}
list_del(&dev->devlist);
mutex_unlock(&em28xx_devlist_mutex);
@@ -1134,6 +1157,8 @@ int em28xx_suspend_extension(struct em28xx *dev)
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
if (ops->suspend)
ops->suspend(dev);
+ if (dev->dev_next)
+ ops->suspend(dev->dev_next);
}
mutex_unlock(&em28xx_devlist_mutex);
return 0;
@@ -1148,6 +1173,8 @@ int em28xx_resume_extension(struct em28xx *dev)
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
if (ops->resume)
ops->resume(dev);
+ if (dev->dev_next)
+ ops->resume(dev->dev_next);
}
mutex_unlock(&em28xx_devlist_mutex);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-30 16:04:02 +0000