xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Browse Source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix S3/S4 problem on machines with VREF-pin mute-LED
  ALSA: hda_intel - revert a quirk that affect VIA chipsets
  ALSA: hda - Avoid touching mute-VREF pin for IDT codecs
  firmware: Sigma: Fix endianess issues
  firmware: Sigma: Skip header during CRC generation
  firmware: Sigma: Prevent out of bounds memory access
  ALSA: usb-audio - Support for Roland GAIA SH-01 Synthesizer
  ASoC: Supply dcs_codes for newer WM1811 revisions
  ASoC: Error out if we can't generate a LRCLK at all for WM8994
  ASoC: Correct name of Speyside Main Speaker widget
  ASoC: skip resume of soc-audio devices without codecs
  ASoC: cs42l51: Fix off-by-one for reg_cache_size
  ASoC: drop support for PlayPaq with WM8510
  ASoC: mpc8610: tell the CS4270 codec that it's the master
  ASoC: cs4720: use snd_soc_cache_sync()
  ASoC: SAMSUNG: Fix build error
  ASoC: max9877: Update register if either val or val2 is changed
  ASoC: Fix wrong define for AD1836_ADC_WORD_OFFSET
This commit is contained in:
Linus Torvalds
2011-12-02 08:10:51 -08:00
parent 5983fe2b29 cf54d47c13
commit 0efebaa72d
17 changed files with 137 additions and 575 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
drivers/firmware/sigma.c
View File

@@ -14,13 +14,34 @@
#include <linux/module.h>
#include <linux/sigma.h>
/* Return: 0==OK, <0==error, =1 ==no more actions */
static int
process_sigma_action(struct i2c_client *client, struct sigma_firmware *ssfw)
static size_t sigma_action_size(struct sigma_action *sa)
{
size_t payload = 0;
switch (sa->instr) {
case SIGMA_ACTION_WRITEXBYTES:
case SIGMA_ACTION_WRITESINGLE:
case SIGMA_ACTION_WRITESAFELOAD:
payload = sigma_action_len(sa);
break;
default:
break;
}
payload = ALIGN(payload, 2);
return payload + sizeof(struct sigma_action);
}
/*
* Returns a negative error value in case of an error, 0 if processing of
* the firmware should be stopped after this action, 1 otherwise.
*/
static int
process_sigma_action(struct i2c_client *client, struct sigma_action *sa)
{
struct sigma_action *sa = (void *)(ssfw->fw->data + ssfw->pos);
size_t len = sigma_action_len(sa);
int ret = 0;
int ret;
pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__,
sa->instr, sa->addr, len);
@@ -29,44 +50,50 @@ process_sigma_action(struct i2c_client *client, struct sigma_firmware *ssfw)
case SIGMA_ACTION_WRITEXBYTES:
case SIGMA_ACTION_WRITESINGLE:
case SIGMA_ACTION_WRITESAFELOAD:
if (ssfw->fw->size < ssfw->pos + len)
return -EINVAL;
ret = i2c_master_send(client, (void *)&sa->addr, len);
if (ret < 0)
return -EINVAL;
break;
case SIGMA_ACTION_DELAY:
ret = 0;
udelay(len);
len = 0;
break;
case SIGMA_ACTION_END:
return 1;
return 0;
default:
return -EINVAL;
}
/* when arrive here ret=0 or sent data */
ssfw->pos += sigma_action_size(sa, len);
return ssfw->pos == ssfw->fw->size;
return 1;
}
static int
process_sigma_actions(struct i2c_client *client, struct sigma_firmware *ssfw)
{
pr_debug("%s: processing %p\n", __func__, ssfw);
struct sigma_action *sa;
size_t size;
int ret;
while (ssfw->pos + sizeof(*sa) <= ssfw->fw->size) {
sa = (struct sigma_action *)(ssfw->fw->data + ssfw->pos);
size = sigma_action_size(sa);
ssfw->pos += size;
if (ssfw->pos > ssfw->fw->size || size == 0)
break;
ret = process_sigma_action(client, sa);
while (1) {
int ret = process_sigma_action(client, ssfw);
pr_debug("%s: action returned %i\n", __func__, ret);
if (ret == 1)
return 0;
else if (ret)
if (ret <= 0)
return ret;
}
if (ssfw->pos != ssfw->fw->size)
return -EINVAL;
return 0;
}
int process_sigma_firmware(struct i2c_client *client, const char *name)
@@ -89,16 +116,24 @@ int process_sigma_firmware(struct i2c_client *client, const char *name)
/* then verify the header */
ret = -EINVAL;
if (fw->size < sizeof(*ssfw_head))
/*
* Reject too small or unreasonable large files. The upper limit has been
* chosen a bit arbitrarily, but it should be enough for all practical
* purposes and having the limit makes it easier to avoid integer
* overflows later in the loading process.
*/
if (fw->size < sizeof(*ssfw_head) || fw->size >= 0x4000000)
goto done;
ssfw_head = (void *)fw->data;
if (memcmp(ssfw_head->magic, SIGMA_MAGIC, ARRAY_SIZE(ssfw_head->magic)))
goto done;
crc = crc32(0, fw->data, fw->size);
crc = crc32(0, fw->data + sizeof(*ssfw_head),
fw->size - sizeof(*ssfw_head));
pr_debug("%s: crc=%x\n", __func__, crc);
if (crc != ssfw_head->crc)
if (crc != le32_to_cpu(ssfw_head->crc))
goto done;
ssfw.pos = sizeof(*ssfw_head);