mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-29 23:28:52 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
775
drivers/media/usb/cx231xx/cx231xx-audio.c
Normal file
775
drivers/media/usb/cx231xx/cx231xx-audio.c
Normal file
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@ -0,0 +1,775 @@
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/*
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* Conexant Cx231xx audio extension
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*
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* Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
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* Based on em28xx driver
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/usb.h>
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#include <linux/init.h>
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#include <linux/sound.h>
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#include <linux/spinlock.h>
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#include <linux/soundcard.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/proc_fs.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/info.h>
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#include <sound/initval.h>
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#include <sound/control.h>
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#include <media/v4l2-common.h>
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#include "cx231xx.h"
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "activates debug info");
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#define dprintk(fmt, arg...) do { \
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if (debug) \
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printk(KERN_INFO "cx231xx-audio %s: " fmt, \
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__func__, ##arg); \
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} while (0)
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
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static int cx231xx_isoc_audio_deinit(struct cx231xx *dev)
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{
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int i;
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dprintk("Stopping isoc\n");
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
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if (dev->adev.urb[i]) {
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if (!irqs_disabled())
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usb_kill_urb(dev->adev.urb[i]);
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else
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usb_unlink_urb(dev->adev.urb[i]);
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usb_free_urb(dev->adev.urb[i]);
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dev->adev.urb[i] = NULL;
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kfree(dev->adev.transfer_buffer[i]);
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dev->adev.transfer_buffer[i] = NULL;
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}
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}
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return 0;
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}
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static int cx231xx_bulk_audio_deinit(struct cx231xx *dev)
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{
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int i;
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dprintk("Stopping bulk\n");
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
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if (dev->adev.urb[i]) {
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if (!irqs_disabled())
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usb_kill_urb(dev->adev.urb[i]);
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else
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usb_unlink_urb(dev->adev.urb[i]);
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usb_free_urb(dev->adev.urb[i]);
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dev->adev.urb[i] = NULL;
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kfree(dev->adev.transfer_buffer[i]);
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dev->adev.transfer_buffer[i] = NULL;
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}
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}
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return 0;
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}
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static void cx231xx_audio_isocirq(struct urb *urb)
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{
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struct cx231xx *dev = urb->context;
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int i;
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unsigned int oldptr;
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int period_elapsed = 0;
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int status;
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unsigned char *cp;
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unsigned int stride;
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struct snd_pcm_substream *substream;
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struct snd_pcm_runtime *runtime;
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if (dev->state & DEV_DISCONNECTED)
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return;
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switch (urb->status) {
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case 0: /* success */
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case -ETIMEDOUT: /* NAK */
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break;
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case -ECONNRESET: /* kill */
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case -ENOENT:
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case -ESHUTDOWN:
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return;
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default: /* error */
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dprintk("urb completition error %d.\n", urb->status);
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break;
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}
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if (atomic_read(&dev->stream_started) == 0)
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return;
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if (dev->adev.capture_pcm_substream) {
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substream = dev->adev.capture_pcm_substream;
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runtime = substream->runtime;
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stride = runtime->frame_bits >> 3;
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for (i = 0; i < urb->number_of_packets; i++) {
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int length = urb->iso_frame_desc[i].actual_length /
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stride;
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cp = (unsigned char *)urb->transfer_buffer +
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urb->iso_frame_desc[i].offset;
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if (!length)
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continue;
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oldptr = dev->adev.hwptr_done_capture;
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if (oldptr + length >= runtime->buffer_size) {
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unsigned int cnt;
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cnt = runtime->buffer_size - oldptr;
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memcpy(runtime->dma_area + oldptr * stride, cp,
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cnt * stride);
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memcpy(runtime->dma_area, cp + cnt * stride,
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length * stride - cnt * stride);
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} else {
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memcpy(runtime->dma_area + oldptr * stride, cp,
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length * stride);
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}
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snd_pcm_stream_lock(substream);
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dev->adev.hwptr_done_capture += length;
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if (dev->adev.hwptr_done_capture >=
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runtime->buffer_size)
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dev->adev.hwptr_done_capture -=
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runtime->buffer_size;
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dev->adev.capture_transfer_done += length;
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if (dev->adev.capture_transfer_done >=
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runtime->period_size) {
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dev->adev.capture_transfer_done -=
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runtime->period_size;
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period_elapsed = 1;
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}
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snd_pcm_stream_unlock(substream);
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}
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if (period_elapsed)
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snd_pcm_period_elapsed(substream);
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}
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urb->status = 0;
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (status < 0) {
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cx231xx_errdev("resubmit of audio urb failed (error=%i)\n",
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status);
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}
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return;
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}
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static void cx231xx_audio_bulkirq(struct urb *urb)
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{
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struct cx231xx *dev = urb->context;
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unsigned int oldptr;
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int period_elapsed = 0;
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int status;
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unsigned char *cp;
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unsigned int stride;
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struct snd_pcm_substream *substream;
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struct snd_pcm_runtime *runtime;
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if (dev->state & DEV_DISCONNECTED)
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return;
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switch (urb->status) {
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case 0: /* success */
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case -ETIMEDOUT: /* NAK */
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break;
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case -ECONNRESET: /* kill */
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case -ENOENT:
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case -ESHUTDOWN:
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return;
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default: /* error */
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dprintk("urb completition error %d.\n", urb->status);
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break;
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}
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if (atomic_read(&dev->stream_started) == 0)
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return;
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if (dev->adev.capture_pcm_substream) {
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substream = dev->adev.capture_pcm_substream;
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runtime = substream->runtime;
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stride = runtime->frame_bits >> 3;
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if (1) {
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int length = urb->actual_length /
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stride;
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cp = (unsigned char *)urb->transfer_buffer;
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oldptr = dev->adev.hwptr_done_capture;
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if (oldptr + length >= runtime->buffer_size) {
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unsigned int cnt;
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cnt = runtime->buffer_size - oldptr;
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memcpy(runtime->dma_area + oldptr * stride, cp,
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cnt * stride);
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memcpy(runtime->dma_area, cp + cnt * stride,
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length * stride - cnt * stride);
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} else {
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memcpy(runtime->dma_area + oldptr * stride, cp,
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length * stride);
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}
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snd_pcm_stream_lock(substream);
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dev->adev.hwptr_done_capture += length;
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if (dev->adev.hwptr_done_capture >=
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runtime->buffer_size)
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dev->adev.hwptr_done_capture -=
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runtime->buffer_size;
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dev->adev.capture_transfer_done += length;
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if (dev->adev.capture_transfer_done >=
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runtime->period_size) {
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dev->adev.capture_transfer_done -=
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runtime->period_size;
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period_elapsed = 1;
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}
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snd_pcm_stream_unlock(substream);
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}
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if (period_elapsed)
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snd_pcm_period_elapsed(substream);
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}
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urb->status = 0;
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (status < 0) {
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cx231xx_errdev("resubmit of audio urb failed (error=%i)\n",
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status);
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}
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return;
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}
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static int cx231xx_init_audio_isoc(struct cx231xx *dev)
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{
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int i, errCode;
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int sb_size;
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cx231xx_info("%s: Starting ISO AUDIO transfers\n", __func__);
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if (dev->state & DEV_DISCONNECTED)
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return -ENODEV;
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sb_size = CX231XX_ISO_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
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struct urb *urb;
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int j, k;
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dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
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if (!dev->adev.transfer_buffer[i])
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return -ENOMEM;
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memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
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urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC);
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if (!urb) {
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cx231xx_errdev("usb_alloc_urb failed!\n");
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for (j = 0; j < i; j++) {
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usb_free_urb(dev->adev.urb[j]);
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kfree(dev->adev.transfer_buffer[j]);
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}
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return -ENOMEM;
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}
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urb->dev = dev->udev;
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urb->context = dev;
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urb->pipe = usb_rcvisocpipe(dev->udev,
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dev->adev.end_point_addr);
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urb->transfer_flags = URB_ISO_ASAP;
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urb->transfer_buffer = dev->adev.transfer_buffer[i];
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urb->interval = 1;
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urb->complete = cx231xx_audio_isocirq;
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urb->number_of_packets = CX231XX_ISO_NUM_AUDIO_PACKETS;
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urb->transfer_buffer_length = sb_size;
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for (j = k = 0; j < CX231XX_ISO_NUM_AUDIO_PACKETS;
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j++, k += dev->adev.max_pkt_size) {
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urb->iso_frame_desc[j].offset = k;
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urb->iso_frame_desc[j].length = dev->adev.max_pkt_size;
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}
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dev->adev.urb[i] = urb;
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}
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
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errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
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if (errCode < 0) {
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cx231xx_isoc_audio_deinit(dev);
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return errCode;
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}
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}
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return errCode;
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}
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static int cx231xx_init_audio_bulk(struct cx231xx *dev)
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{
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int i, errCode;
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int sb_size;
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cx231xx_info("%s: Starting BULK AUDIO transfers\n", __func__);
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if (dev->state & DEV_DISCONNECTED)
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return -ENODEV;
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sb_size = CX231XX_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size;
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
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struct urb *urb;
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int j;
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dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC);
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if (!dev->adev.transfer_buffer[i])
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return -ENOMEM;
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memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
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urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
|
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if (!urb) {
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cx231xx_errdev("usb_alloc_urb failed!\n");
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for (j = 0; j < i; j++) {
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usb_free_urb(dev->adev.urb[j]);
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kfree(dev->adev.transfer_buffer[j]);
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}
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return -ENOMEM;
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}
|
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urb->dev = dev->udev;
|
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urb->context = dev;
|
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urb->pipe = usb_rcvbulkpipe(dev->udev,
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dev->adev.end_point_addr);
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urb->transfer_flags = 0;
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urb->transfer_buffer = dev->adev.transfer_buffer[i];
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urb->complete = cx231xx_audio_bulkirq;
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urb->transfer_buffer_length = sb_size;
|
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dev->adev.urb[i] = urb;
|
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|
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}
|
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|
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for (i = 0; i < CX231XX_AUDIO_BUFS; i++) {
|
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errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
|
||||
if (errCode < 0) {
|
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cx231xx_bulk_audio_deinit(dev);
|
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return errCode;
|
||||
}
|
||||
}
|
||||
|
||||
return errCode;
|
||||
}
|
||||
|
||||
static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs,
|
||||
size_t size)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = subs->runtime;
|
||||
|
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dprintk("Allocating vbuffer\n");
|
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if (runtime->dma_area) {
|
||||
if (runtime->dma_bytes > size)
|
||||
return 0;
|
||||
|
||||
vfree(runtime->dma_area);
|
||||
}
|
||||
runtime->dma_area = vmalloc(size);
|
||||
if (!runtime->dma_area)
|
||||
return -ENOMEM;
|
||||
|
||||
runtime->dma_bytes = size;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_pcm_hardware snd_cx231xx_hw_capture = {
|
||||
.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||||
SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_MMAP_VALID,
|
||||
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
||||
|
||||
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT,
|
||||
|
||||
.rate_min = 48000,
|
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.rate_max = 48000,
|
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.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */
|
||||
.period_bytes_min = 64, /* 12544/2, */
|
||||
.period_bytes_max = 12544,
|
||||
.periods_min = 2,
|
||||
.periods_max = 98, /* 12544, */
|
||||
};
|
||||
|
||||
static int snd_cx231xx_capture_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct cx231xx *dev = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
int ret = 0;
|
||||
|
||||
dprintk("opening device and trying to acquire exclusive lock\n");
|
||||
|
||||
if (!dev) {
|
||||
cx231xx_errdev("BUG: cx231xx can't find device struct."
|
||||
" Can't proceed with open\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (dev->state & DEV_DISCONNECTED) {
|
||||
cx231xx_errdev("Can't open. the device was removed.\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* set alternate setting for audio interface */
|
||||
/* 1 - 48000 samples per sec */
|
||||
mutex_lock(&dev->lock);
|
||||
if (dev->USE_ISO)
|
||||
ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 1);
|
||||
else
|
||||
ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
|
||||
mutex_unlock(&dev->lock);
|
||||
if (ret < 0) {
|
||||
cx231xx_errdev("failed to set alternate setting !\n");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
runtime->hw = snd_cx231xx_hw_capture;
|
||||
|
||||
mutex_lock(&dev->lock);
|
||||
/* inform hardware to start streaming */
|
||||
ret = cx231xx_capture_start(dev, 1, Audio);
|
||||
|
||||
dev->adev.users++;
|
||||
mutex_unlock(&dev->lock);
|
||||
|
||||
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
|
||||
dev->adev.capture_pcm_substream = substream;
|
||||
runtime->private_data = dev;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_cx231xx_pcm_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
int ret;
|
||||
struct cx231xx *dev = snd_pcm_substream_chip(substream);
|
||||
|
||||
dprintk("closing device\n");
|
||||
|
||||
/* inform hardware to stop streaming */
|
||||
mutex_lock(&dev->lock);
|
||||
ret = cx231xx_capture_start(dev, 0, Audio);
|
||||
|
||||
/* set alternate setting for audio interface */
|
||||
/* 1 - 48000 samples per sec */
|
||||
ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0);
|
||||
if (ret < 0) {
|
||||
cx231xx_errdev("failed to set alternate setting !\n");
|
||||
|
||||
mutex_unlock(&dev->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
dev->adev.users--;
|
||||
mutex_unlock(&dev->lock);
|
||||
|
||||
if (dev->adev.users == 0 && dev->adev.shutdown == 1) {
|
||||
dprintk("audio users: %d\n", dev->adev.users);
|
||||
dprintk("disabling audio stream!\n");
|
||||
dev->adev.shutdown = 0;
|
||||
dprintk("released lock\n");
|
||||
if (atomic_read(&dev->stream_started) > 0) {
|
||||
atomic_set(&dev->stream_started, 0);
|
||||
schedule_work(&dev->wq_trigger);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_cx231xx_hw_capture_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *hw_params)
|
||||
{
|
||||
int ret;
|
||||
|
||||
dprintk("Setting capture parameters\n");
|
||||
|
||||
ret = snd_pcm_alloc_vmalloc_buffer(substream,
|
||||
params_buffer_bytes(hw_params));
|
||||
#if 0
|
||||
/* TODO: set up cx231xx audio chip to deliver the correct audio format,
|
||||
current default is 48000hz multiplexed => 96000hz mono
|
||||
which shouldn't matter since analogue TV only supports mono */
|
||||
unsigned int channels, rate, format;
|
||||
|
||||
format = params_format(hw_params);
|
||||
rate = params_rate(hw_params);
|
||||
channels = params_channels(hw_params);
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int snd_cx231xx_hw_capture_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct cx231xx *dev = snd_pcm_substream_chip(substream);
|
||||
|
||||
dprintk("Stop capture, if needed\n");
|
||||
|
||||
if (atomic_read(&dev->stream_started) > 0) {
|
||||
atomic_set(&dev->stream_started, 0);
|
||||
schedule_work(&dev->wq_trigger);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_cx231xx_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct cx231xx *dev = snd_pcm_substream_chip(substream);
|
||||
|
||||
dev->adev.hwptr_done_capture = 0;
|
||||
dev->adev.capture_transfer_done = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void audio_trigger(struct work_struct *work)
|
||||
{
|
||||
struct cx231xx *dev = container_of(work, struct cx231xx, wq_trigger);
|
||||
|
||||
if (atomic_read(&dev->stream_started)) {
|
||||
dprintk("starting capture");
|
||||
if (is_fw_load(dev) == 0)
|
||||
cx25840_call(dev, core, load_fw);
|
||||
if (dev->USE_ISO)
|
||||
cx231xx_init_audio_isoc(dev);
|
||||
else
|
||||
cx231xx_init_audio_bulk(dev);
|
||||
} else {
|
||||
dprintk("stopping capture");
|
||||
cx231xx_isoc_audio_deinit(dev);
|
||||
}
|
||||
}
|
||||
|
||||
static int snd_cx231xx_capture_trigger(struct snd_pcm_substream *substream,
|
||||
int cmd)
|
||||
{
|
||||
struct cx231xx *dev = snd_pcm_substream_chip(substream);
|
||||
int retval = 0;
|
||||
|
||||
if (dev->state & DEV_DISCONNECTED)
|
||||
return -ENODEV;
|
||||
|
||||
spin_lock(&dev->adev.slock);
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
atomic_set(&dev->stream_started, 1);
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
atomic_set(&dev->stream_started, 0);
|
||||
break;
|
||||
default:
|
||||
retval = -EINVAL;
|
||||
break;
|
||||
}
|
||||
spin_unlock(&dev->adev.slock);
|
||||
|
||||
schedule_work(&dev->wq_trigger);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t snd_cx231xx_capture_pointer(struct snd_pcm_substream
|
||||
*substream)
|
||||
{
|
||||
struct cx231xx *dev;
|
||||
unsigned long flags;
|
||||
snd_pcm_uframes_t hwptr_done;
|
||||
|
||||
dev = snd_pcm_substream_chip(substream);
|
||||
|
||||
spin_lock_irqsave(&dev->adev.slock, flags);
|
||||
hwptr_done = dev->adev.hwptr_done_capture;
|
||||
spin_unlock_irqrestore(&dev->adev.slock, flags);
|
||||
|
||||
return hwptr_done;
|
||||
}
|
||||
|
||||
static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
|
||||
unsigned long offset)
|
||||
{
|
||||
void *pageptr = subs->runtime->dma_area + offset;
|
||||
|
||||
return vmalloc_to_page(pageptr);
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops snd_cx231xx_pcm_capture = {
|
||||
.open = snd_cx231xx_capture_open,
|
||||
.close = snd_cx231xx_pcm_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = snd_cx231xx_hw_capture_params,
|
||||
.hw_free = snd_cx231xx_hw_capture_free,
|
||||
.prepare = snd_cx231xx_prepare,
|
||||
.trigger = snd_cx231xx_capture_trigger,
|
||||
.pointer = snd_cx231xx_capture_pointer,
|
||||
.page = snd_pcm_get_vmalloc_page,
|
||||
};
|
||||
|
||||
static int cx231xx_audio_init(struct cx231xx *dev)
|
||||
{
|
||||
struct cx231xx_audio *adev = &dev->adev;
|
||||
struct snd_pcm *pcm;
|
||||
struct snd_card *card;
|
||||
static int devnr;
|
||||
int err;
|
||||
struct usb_interface *uif;
|
||||
int i, isoc_pipe = 0;
|
||||
|
||||
if (dev->has_alsa_audio != 1) {
|
||||
/* This device does not support the extension (in this case
|
||||
the device is expecting the snd-usb-audio module or
|
||||
doesn't have analog audio support at all) */
|
||||
return 0;
|
||||
}
|
||||
|
||||
cx231xx_info("cx231xx-audio.c: probing for cx231xx "
|
||||
"non standard usbaudio\n");
|
||||
|
||||
err = snd_card_new(&dev->udev->dev, index[devnr], "Cx231xx Audio",
|
||||
THIS_MODULE, 0, &card);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
spin_lock_init(&adev->slock);
|
||||
err = snd_pcm_new(card, "Cx231xx Audio", 0, 0, 1, &pcm);
|
||||
if (err < 0) {
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
|
||||
&snd_cx231xx_pcm_capture);
|
||||
pcm->info_flags = 0;
|
||||
pcm->private_data = dev;
|
||||
strcpy(pcm->name, "Conexant cx231xx Capture");
|
||||
strcpy(card->driver, "Cx231xx-Audio");
|
||||
strcpy(card->shortname, "Cx231xx Audio");
|
||||
strcpy(card->longname, "Conexant cx231xx Audio");
|
||||
|
||||
INIT_WORK(&dev->wq_trigger, audio_trigger);
|
||||
|
||||
err = snd_card_register(card);
|
||||
if (err < 0) {
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
adev->sndcard = card;
|
||||
adev->udev = dev->udev;
|
||||
|
||||
/* compute alternate max packet sizes for Audio */
|
||||
uif =
|
||||
dev->udev->actconfig->interface[dev->current_pcb_config.
|
||||
hs_config_info[0].interface_info.
|
||||
audio_index + 1];
|
||||
|
||||
adev->end_point_addr =
|
||||
uif->altsetting[0].endpoint[isoc_pipe].desc.
|
||||
bEndpointAddress;
|
||||
|
||||
adev->num_alt = uif->num_altsetting;
|
||||
cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
|
||||
adev->end_point_addr, adev->num_alt);
|
||||
adev->alt_max_pkt_size = kmalloc(32 * adev->num_alt, GFP_KERNEL);
|
||||
|
||||
if (adev->alt_max_pkt_size == NULL) {
|
||||
cx231xx_errdev("out of memory!\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
for (i = 0; i < adev->num_alt; i++) {
|
||||
u16 tmp =
|
||||
le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc.
|
||||
wMaxPacketSize);
|
||||
adev->alt_max_pkt_size[i] =
|
||||
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
|
||||
cx231xx_info("Alternate setting %i, max size= %i\n", i,
|
||||
adev->alt_max_pkt_size[i]);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cx231xx_audio_fini(struct cx231xx *dev)
|
||||
{
|
||||
if (dev == NULL)
|
||||
return 0;
|
||||
|
||||
if (dev->has_alsa_audio != 1) {
|
||||
/* This device does not support the extension (in this case
|
||||
the device is expecting the snd-usb-audio module or
|
||||
doesn't have analog audio support at all) */
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (dev->adev.sndcard) {
|
||||
snd_card_free(dev->adev.sndcard);
|
||||
kfree(dev->adev.alt_max_pkt_size);
|
||||
dev->adev.sndcard = NULL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct cx231xx_ops audio_ops = {
|
||||
.id = CX231XX_AUDIO,
|
||||
.name = "Cx231xx Audio Extension",
|
||||
.init = cx231xx_audio_init,
|
||||
.fini = cx231xx_audio_fini,
|
||||
};
|
||||
|
||||
static int __init cx231xx_alsa_register(void)
|
||||
{
|
||||
return cx231xx_register_extension(&audio_ops);
|
||||
}
|
||||
|
||||
static void __exit cx231xx_alsa_unregister(void)
|
||||
{
|
||||
cx231xx_unregister_extension(&audio_ops);
|
||||
}
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
|
||||
MODULE_DESCRIPTION("Cx231xx Audio driver");
|
||||
|
||||
module_init(cx231xx_alsa_register);
|
||||
module_exit(cx231xx_alsa_unregister);
|
||||
Loading…
Add table
Add a link
Reference in a new issue