clock.c (bc23416cd4579093acc1e7d819eee747def623da) clock.c (11bcbc443a17653c65bc20029172fae76f4bcca4)
1/*
2 * Clock domain and sample rate management functions
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

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98static int uac_clock_selector_get_val(struct snd_usb_audio *chip, int selector_id)
99{
100 unsigned char buf;
101 int ret;
102
103 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0),
104 UAC2_CS_CUR,
105 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
1/*
2 * Clock domain and sample rate management functions
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

--- 89 unchanged lines hidden (view full) ---

98static int uac_clock_selector_get_val(struct snd_usb_audio *chip, int selector_id)
99{
100 unsigned char buf;
101 int ret;
102
103 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0),
104 UAC2_CS_CUR,
105 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
106 UAC2_CX_CLOCK_SELECTOR << 8, selector_id << 8,
106 UAC2_CX_CLOCK_SELECTOR << 8,
107 snd_usb_ctrl_intf(chip) | (selector_id << 8),
107 &buf, sizeof(buf), 1000);
108
109 if (ret < 0)
110 return ret;
111
112 return buf;
113}
114
115static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
116{
117 int err;
118 unsigned char data;
119 struct usb_device *dev = chip->dev;
120
121 err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
122 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
108 &buf, sizeof(buf), 1000);
109
110 if (ret < 0)
111 return ret;
112
113 return buf;
114}
115
116static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
117{
118 int err;
119 unsigned char data;
120 struct usb_device *dev = chip->dev;
121
122 err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
123 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
123 UAC2_CS_CONTROL_CLOCK_VALID << 8, source_id << 8,
124 UAC2_CS_CONTROL_CLOCK_VALID << 8,
125 snd_usb_ctrl_intf(chip) | (source_id << 8),
124 &data, sizeof(data), 1000);
125
126 if (err < 0) {
127 snd_printk(KERN_WARNING "%s(): cannot get clock validity for id %d\n",
128 __func__, source_id);
129 return err;
130 }
131

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264 }
265
266 data[0] = rate;
267 data[1] = rate >> 8;
268 data[2] = rate >> 16;
269 data[3] = rate >> 24;
270 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
271 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
126 &data, sizeof(data), 1000);
127
128 if (err < 0) {
129 snd_printk(KERN_WARNING "%s(): cannot get clock validity for id %d\n",
130 __func__, source_id);
131 return err;
132 }
133

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266 }
267
268 data[0] = rate;
269 data[1] = rate >> 8;
270 data[2] = rate >> 16;
271 data[3] = rate >> 24;
272 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
273 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
272 UAC2_CS_CONTROL_SAM_FREQ << 8, clock << 8,
274 UAC2_CS_CONTROL_SAM_FREQ << 8,
275 snd_usb_ctrl_intf(chip) | (clock << 8),
273 data, sizeof(data), 1000)) < 0) {
274 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
275 dev->devnum, iface, fmt->altsetting, rate);
276 return err;
277 }
278
279 if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
280 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
276 data, sizeof(data), 1000)) < 0) {
277 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
278 dev->devnum, iface, fmt->altsetting, rate);
279 return err;
280 }
281
282 if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
283 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
281 UAC2_CS_CONTROL_SAM_FREQ << 8, clock << 8,
284 UAC2_CS_CONTROL_SAM_FREQ << 8,
285 snd_usb_ctrl_intf(chip) | (clock << 8),
282 data, sizeof(data), 1000)) < 0) {
283 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
284 dev->devnum, iface, fmt->altsetting);
285 return err;
286 }
287
288 crate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
289 if (crate != rate)

--- 22 unchanged lines hidden --- 		286 data, sizeof(data), 1000)) < 0) {
287 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
288 dev->devnum, iface, fmt->altsetting);
289 return err;
290 }
291
292 crate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
293 if (crate != rate)

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