had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, reset);
}
-/**
+/*
* initialize audio channel status registers
* This function is called in the prepare callback
*/
int format;
ch_stat0.status_0_regx.lpcm_id = (intelhaddata->aes_bits &
- IEC958_AES0_NONAUDIO)>>1;
+ IEC958_AES0_NONAUDIO) >> 1;
ch_stat0.status_0_regx.clk_acc = (intelhaddata->aes_bits &
- IEC958_AES3_CON_CLOCK)>>4;
+ IEC958_AES3_CON_CLOCK) >> 4;
cfg_val.cfg_regx_v2.val_bit = ch_stat0.status_0_regx.lpcm_id;
switch (substream->runtime->rate) {
default:
/* control should never come here */
return -EINVAL;
- break;
-
}
+
had_write_register(intelhaddata,
AUD_CH_STATUS_0, ch_stat0.status_0_regval);
ch_stat1.status_1_regx.max_wrd_len = 0;
ch_stat1.status_1_regx.wrd_len = 0;
}
+
had_write_register(intelhaddata,
AUD_CH_STATUS_1, ch_stat1.status_1_regval);
return 0;
static void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata)
{
- int i = 0, c = 0;
+ int i, c;
int spk_mask = 0;
struct snd_pcm_chmap_elem *chmap;
u8 eld_high, eld_high_mask = 0xF0;
u8 high_msb;
chmap = kzalloc(sizeof(*chmap), GFP_KERNEL);
- if (chmap == NULL) {
+ if (!chmap) {
intelhaddata->chmap->chmap = NULL;
return;
}
for (c = 0; c < channel_allocations[i].channels; c++) {
chmap->map[c] = spk_to_chmap(
channel_allocations[i].speakers[
- (MAX_SPEAKERS - 1)-c]);
+ (MAX_SPEAKERS - 1) - c]);
}
chmap->channels = channel_allocations[i].channels;
intelhaddata->chmap->chmap = chmap;
{
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
struct snd_intelhad *intelhaddata = info->private_data;
- int i = 0;
+ int i;
const struct snd_pcm_chmap_elem *chmap;
if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED)
return -ENODEV;
- if (intelhaddata->chmap->chmap == NULL)
+ if (!intelhaddata->chmap->chmap)
return -ENODATA;
chmap = intelhaddata->chmap->chmap;
for (i = 0; i < chmap->channels; i++)
static int had_register_chmap_ctls(struct snd_intelhad *intelhaddata,
struct snd_pcm *pcm)
{
- int err = 0;
+ int err;
err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
NULL, 0, (unsigned long)intelhaddata,
frame3.fr3_regx.chnl_alloc = snd_intelhad_channel_allocation(
intelhaddata, channels);
- /*Calculte the byte wide checksum for all valid DIP words*/
+ /* Calculte the byte wide checksum for all valid DIP words */
for (i = 0; i < BYTES_PER_WORD; i++)
checksum += (info_frame >> i*BITS_PER_BYTE) & MASK_BYTE0;
for (i = 0; i < BYTES_PER_WORD; i++)
had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.ctrl_val);
}
-/**
- * snd_intelhad_prog_buffer - programs buffer
- * address and length registers
- *
+/*
+ * snd_intelhad_prog_buffer - programs buffer address and length registers
* @substream:substream for which the prepare function is called
* @intelhaddata:substream private data
*
intelhaddata->buf_info[i].buf_size = period_bytes;
else
intelhaddata->buf_info[i].buf_size = ring_buf_size -
- (period_bytes*i);
+ (i * period_bytes);
had_write_register(intelhaddata,
AUD_BUF_A_ADDR + (i * HAD_REG_WIDTH),
{
u32 maud_val;
- /* Select maud according to DP 1.2 spec*/
+ /* Select maud according to DP 1.2 spec */
if (link_rate == DP_2_7_GHZ) {
switch (aud_samp_freq) {
case AUD_SAMPLE_RATE_32:
static int had_calculate_n_value(u32 aud_samp_freq)
{
- s32 n_val;
+ int n_val;
/* Select N according to HDMI 1.3a spec*/
switch (aud_samp_freq) {
case AUD_SAMPLE_RATE_32:
n_val = 4096;
- break;
+ break;
case AUD_SAMPLE_RATE_44_1:
n_val = 6272;
- break;
+ break;
case AUD_SAMPLE_RATE_48:
n_val = 6144;
- break;
+ break;
case AUD_SAMPLE_RATE_88_2:
n_val = 12544;
- break;
+ break;
case AUD_SAMPLE_RATE_96:
n_val = 12288;
- break;
+ break;
case AUD_SAMPLE_RATE_176_4:
n_val = 25088;
- break;
+ break;
case HAD_MAX_RATE:
n_val = 24576;
- break;
+ break;
default:
n_val = -EINVAL;
- break;
+ break;
}
return n_val;
}
static int snd_intelhad_prog_n(u32 aud_samp_freq, u32 *n_param,
struct snd_intelhad *intelhaddata)
{
- s32 n_val;
+ int n_val;
if (intelhaddata->dp_output) {
/*
/* Reset buffer pointers */
had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 1);
had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 0);
- /**
+ /*
* The interrupt status 'sticky' bits might not be cleared by
* setting '1' to that bit once...
*/
dev_err(intelhaddata->dev, "Unable to clear UNDERRUN bits\n");
}
-/**
+/*
* snd_intelhad_open - stream initializations are done here
* @substream:substream for which the stream function is called
*
snd_pcm_period_elapsed(substream);
}
-/**
- * snd_intelhad_init_stream - internal function to initialize stream info
- * @substream:substream for which the stream function is called
- *
- */
-static int snd_intelhad_init_stream(struct snd_pcm_substream *substream)
-{
- struct snd_intelhad *intelhaddata = snd_pcm_substream_chip(substream);
-
- intelhaddata->stream_info.had_substream = substream;
- intelhaddata->stream_info.buffer_ptr = 0;
- intelhaddata->stream_info.buffer_rendered = 0;
- intelhaddata->stream_info.sfreq = substream->runtime->rate;
- return 0;
-}
-
-/**
- * snd_intelhad_close- to free parameteres when stream is stopped
- *
+/*
+ * snd_intelhad_close - to free parameteres when stream is stopped
* @substream: substream for which the function is called
*
* This function is called by ALSA framework when stream is stopped
return 0;
}
-/**
- * snd_intelhad_hw_params- to setup the hardware parameters
- * like allocating the buffers
- *
- * @substream: substream for which the function is called
+/*
+ * snd_intelhad_hw_params - to setup the hardware parameters
+ * like allocating the buffers
+ * @substream: substream for which the function is called
* @hw_params: hardware parameters
*
* This function is called by ALSA framework when hardware params are set
return retval;
}
-/**
- * snd_intelhad_hw_free- to release the resources allocated during
- * hardware params setup
- *
+/*
+ * snd_intelhad_hw_free - to release the resources allocated during
+ * hardware params setup
* @substream: substream for which the function is called
*
* This function is called by ALSA framework before close callback.
- *
*/
static int snd_intelhad_hw_free(struct snd_pcm_substream *substream)
{
return 0;
}
-/**
+/*
* snd_intelhad_pcm_trigger - stream activities are handled here
- * @substream:substream for which the stream function is called
- * @cmd:the stream commamd thats requested from upper layer
+ * @substream: substream for which the stream function is called
+ * @cmd: the stream commamd thats requested from upper layer
+ *
* This function is called whenever an a stream activity is invoked
*/
static int snd_intelhad_pcm_trigger(struct snd_pcm_substream *substream,
return retval;
}
-/**
- * snd_intelhad_pcm_prepare- internal preparation before starting a stream
- *
- * @substream: substream for which the function is called
+/*
+ * snd_intelhad_pcm_prepare - internal preparation before starting a stream
+ * @substream: substream for which the function is called
*
* This function is called when a stream is started for internal preparation.
*/
return retval;
}
- retval = snd_intelhad_init_stream(substream);
- if (retval)
- goto prep_end;
-
+ intelhaddata->stream_info.had_substream = substream;
+ intelhaddata->stream_info.buffer_ptr = 0;
+ intelhaddata->stream_info.buffer_rendered = 0;
+ intelhaddata->stream_info.sfreq = substream->runtime->rate;
/* Get N value in KHz */
disp_samp_freq = intelhaddata->tmds_clock_speed;
return retval;
}
-/**
+/*
* snd_intelhad_pcm_pointer- to send the current buffer pointerprocessed by hw
- *
- * @substream: substream for which the function is called
+ * @substream: substream for which the function is called
*
* This function is called by ALSA framework to get the current hw buffer ptr
* when a period is elapsed
return intelhaddata->stream_info.buffer_ptr;
}
-/**
+/*
* snd_intelhad_pcm_mmap- mmaps a kernel buffer to user space for copying data
- *
- * @substream: substream for which the function is called
- * @vma: struct instance of memory VMM memory area
+ * @substream: substream for which the function is called
+ * @vma: struct instance of memory VMM memory area
*
* This function is called by OS when a user space component
* tries to get mmap memory from driver
/*
* hdmi_lpe_audio_suspend - power management suspend function
- *
* @pdev: platform device
*
- * This function is called by client driver to suspend the
- * hdmi audio.
+ * This function is called to suspend the hdmi audio.
*/
static int hdmi_lpe_audio_suspend(struct platform_device *pdev,
pm_message_t state)
/*
* hdmi_lpe_audio_resume - power management resume function
+ * @pdev: platform device
*
- *@pdev: platform device
- *
- * This function is called by client driver to resume the
- * hdmi audio.
+ * This function is called to resume the hdmi audio.
*/
static int hdmi_lpe_audio_resume(struct platform_device *pdev)
{
return 0;
}
- /*Reprogram the registers with addr and length*/
+ /* Reprogram the registers with addr and length */
had_write_register(intelhaddata,
AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH),
buf_size);
* hdmi_lpe_audio_probe - start bridge with i915
*
* This function is called when the i915 driver creates the
- * hdmi-lpe-audio platform device. Card creation is deferred until a
- * hot plug event is received
+ * hdmi-lpe-audio platform device.
*/
static int hdmi_lpe_audio_probe(struct platform_device *pdev)
{
/*
* hdmi_lpe_audio_remove - stop bridge with i915
*
- * This function is called when the platform device is destroyed. The sound
- * card should have been removed on hot plug event.
+ * This function is called when the platform device is destroyed.
*/
static int hdmi_lpe_audio_remove(struct platform_device *pdev)
{
projects / openwrt / staging / blogic.git / commitdiff