mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
ALSA: hda - Add comments and descriptions to CA0132 functions
Add comments and descriptions to functions. Bump dsp_free_ports() to below dsp_allocate_ports_format() to group the alloc functions together for commenting. Signed-off-by: Ian Minett <ian_minett@creativelabs.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Ian Minett
Takashi Iwai
parent
c3b4eea262
commit
d5c21b88e8
@ -519,6 +519,9 @@ static int chipio_write_data(struct hda_codec *codec, unsigned int data)
|
||||
return res;
|
||||
}
|
||||
|
||||
/*
|
||||
* Write multiple data through the vendor widget -- NOT protected by the Mutex!
|
||||
*/
|
||||
static int chipio_write_data_multiple(struct hda_codec *codec,
|
||||
const u32 *data,
|
||||
unsigned int count)
|
||||
@ -588,6 +591,10 @@ exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Write multiple values to the given address through the chip I/O widget.
|
||||
* protected by the Mutex
|
||||
*/
|
||||
static int chipio_write_multiple(struct hda_codec *codec,
|
||||
u32 chip_addx,
|
||||
const u32 *data,
|
||||
@ -634,6 +641,9 @@ exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set chip control flags through the chip I/O widget.
|
||||
*/
|
||||
static void chipio_set_control_flag(struct hda_codec *codec,
|
||||
enum control_flag_id flag_id,
|
||||
bool flag_state)
|
||||
@ -647,6 +657,9 @@ static void chipio_set_control_flag(struct hda_codec *codec,
|
||||
VENDOR_CHIPIO_FLAG_SET, val);
|
||||
}
|
||||
|
||||
/*
|
||||
* Set chip parameters through the chip I/O widget.
|
||||
*/
|
||||
static void chipio_set_control_param(struct hda_codec *codec,
|
||||
enum control_param_id param_id, int param_val)
|
||||
{
|
||||
@ -671,6 +684,9 @@ static void chipio_set_control_param(struct hda_codec *codec,
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Set sampling rate of the connection point.
|
||||
*/
|
||||
static void chipio_set_conn_rate(struct hda_codec *codec,
|
||||
int connid, enum ca0132_sample_rate rate)
|
||||
{
|
||||
@ -679,6 +695,9 @@ static void chipio_set_conn_rate(struct hda_codec *codec,
|
||||
rate);
|
||||
}
|
||||
|
||||
/*
|
||||
* Enable clocks.
|
||||
*/
|
||||
static void chipio_enable_clocks(struct hda_codec *codec)
|
||||
{
|
||||
struct ca0132_spec *spec = codec->spec;
|
||||
@ -718,6 +737,9 @@ static int dspio_send(struct hda_codec *codec, unsigned int reg,
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
/*
|
||||
* Wait for DSP to be ready for commands
|
||||
*/
|
||||
static void dspio_write_wait(struct hda_codec *codec)
|
||||
{
|
||||
int cur_val, prv_val;
|
||||
@ -734,6 +756,9 @@ static void dspio_write_wait(struct hda_codec *codec)
|
||||
} while (cur_val && (cur_val == prv_val) && --retry);
|
||||
}
|
||||
|
||||
/*
|
||||
* Write SCP data to DSP
|
||||
*/
|
||||
static int dspio_write(struct hda_codec *codec, unsigned int scp_data)
|
||||
{
|
||||
struct ca0132_spec *spec = codec->spec;
|
||||
@ -762,6 +787,9 @@ error:
|
||||
-EIO : 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Write multiple SCP data to DSP
|
||||
*/
|
||||
static int dspio_write_multiple(struct hda_codec *codec,
|
||||
unsigned int *buffer, unsigned int size)
|
||||
{
|
||||
@ -782,6 +810,9 @@ static int dspio_write_multiple(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Construct the SCP header using corresponding fields
|
||||
*/
|
||||
static inline unsigned int
|
||||
make_scp_header(unsigned int target_id, unsigned int source_id,
|
||||
unsigned int get_flag, unsigned int req,
|
||||
@ -802,6 +833,9 @@ make_scp_header(unsigned int target_id, unsigned int source_id,
|
||||
return header;
|
||||
}
|
||||
|
||||
/*
|
||||
* Extract corresponding fields from SCP header
|
||||
*/
|
||||
static inline void
|
||||
extract_scp_header(unsigned int header,
|
||||
unsigned int *target_id, unsigned int *source_id,
|
||||
@ -835,6 +869,9 @@ struct scp_msg {
|
||||
unsigned int data[SCP_MAX_DATA_WORDS];
|
||||
};
|
||||
|
||||
/*
|
||||
* Send SCP message to DSP
|
||||
*/
|
||||
static int dspio_send_scp_message(struct hda_codec *codec,
|
||||
unsigned char *send_buf,
|
||||
unsigned int send_buf_size,
|
||||
@ -912,6 +949,19 @@ static int dspio_send_scp_message(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepare and send the SCP message to DSP
|
||||
* @codec: the HDA codec
|
||||
* @mod_id: ID of the DSP module to send the command
|
||||
* @req: ID of request to send to the DSP module
|
||||
* @dir: SET or GET
|
||||
* @data: pointer to the data to send with the request, request specific
|
||||
* @len: length of the data, in bytes
|
||||
* @reply: point to the buffer to hold data returned for a reply
|
||||
* @reply_len: length of the reply buffer returned from GET
|
||||
*
|
||||
* Returns zero or a negative error code.
|
||||
*/
|
||||
static int dspio_scp(struct hda_codec *codec,
|
||||
int mod_id, int req, int dir, void *data, unsigned int len,
|
||||
void *reply, unsigned int *reply_len)
|
||||
@ -988,6 +1038,9 @@ static int dspio_scp(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate a DSP DMA channel via an SCP message
|
||||
*/
|
||||
static int dspio_alloc_dma_chan(struct hda_codec *codec, unsigned int *dma_chan)
|
||||
{
|
||||
int status = 0;
|
||||
@ -1013,6 +1066,9 @@ static int dspio_alloc_dma_chan(struct hda_codec *codec, unsigned int *dma_chan)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Free a DSP DMA via an SCP message
|
||||
*/
|
||||
static int dspio_free_dma_chan(struct hda_codec *codec, unsigned int dma_chan)
|
||||
{
|
||||
int status = 0;
|
||||
@ -1035,7 +1091,7 @@ static int dspio_free_dma_chan(struct hda_codec *codec, unsigned int dma_chan)
|
||||
}
|
||||
|
||||
/*
|
||||
* CA0132 DSP access stuffs
|
||||
* (Re)start the DSP
|
||||
*/
|
||||
static int dsp_set_run_state(struct hda_codec *codec)
|
||||
{
|
||||
@ -1069,6 +1125,9 @@ static int dsp_set_run_state(struct hda_codec *codec)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Reset the DSP
|
||||
*/
|
||||
static int dsp_reset(struct hda_codec *codec)
|
||||
{
|
||||
unsigned int res;
|
||||
@ -1088,6 +1147,9 @@ static int dsp_reset(struct hda_codec *codec)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Convert chip address to DSP address
|
||||
*/
|
||||
static unsigned int dsp_chip_to_dsp_addx(unsigned int chip_addx,
|
||||
bool *code, bool *yram)
|
||||
{
|
||||
@ -1106,6 +1168,9 @@ static unsigned int dsp_chip_to_dsp_addx(unsigned int chip_addx,
|
||||
return (unsigned int)INVALID_CHIP_ADDRESS;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if the DSP DMA is active
|
||||
*/
|
||||
static bool dsp_is_dma_active(struct hda_codec *codec, unsigned int dma_chan)
|
||||
{
|
||||
unsigned int dma_chnlstart_reg;
|
||||
@ -1226,6 +1291,9 @@ static int dsp_dma_setup_common(struct hda_codec *codec,
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Setup the DSP DMA per-transfer-specific registers
|
||||
*/
|
||||
static int dsp_dma_setup(struct hda_codec *codec,
|
||||
unsigned int chip_addx,
|
||||
unsigned int count,
|
||||
@ -1314,6 +1382,9 @@ static int dsp_dma_setup(struct hda_codec *codec,
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Start the DSP DMA
|
||||
*/
|
||||
static int dsp_dma_start(struct hda_codec *codec,
|
||||
unsigned int dma_chan, bool ovly)
|
||||
{
|
||||
@ -1347,6 +1418,9 @@ static int dsp_dma_start(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Stop the DSP DMA
|
||||
*/
|
||||
static int dsp_dma_stop(struct hda_codec *codec,
|
||||
unsigned int dma_chan, bool ovly)
|
||||
{
|
||||
@ -1379,6 +1453,17 @@ static int dsp_dma_stop(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* Allocate router ports
|
||||
*
|
||||
* @codec: the HDA codec
|
||||
* @num_chans: number of channels in the stream
|
||||
* @ports_per_channel: number of ports per channel
|
||||
* @start_device: start device
|
||||
* @port_map: pointer to the port list to hold the allocated ports
|
||||
*
|
||||
* Returns zero or a negative error code.
|
||||
*/
|
||||
static int dsp_allocate_router_ports(struct hda_codec *codec,
|
||||
unsigned int num_chans,
|
||||
unsigned int ports_per_channel,
|
||||
@ -1417,6 +1502,9 @@ static int dsp_allocate_router_ports(struct hda_codec *codec,
|
||||
return (res < 0) ? res : 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Free router ports
|
||||
*/
|
||||
static int dsp_free_router_ports(struct hda_codec *codec)
|
||||
{
|
||||
int status = 0;
|
||||
@ -1434,6 +1522,9 @@ static int dsp_free_router_ports(struct hda_codec *codec)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate DSP ports for the download stream
|
||||
*/
|
||||
static int dsp_allocate_ports(struct hda_codec *codec,
|
||||
unsigned int num_chans,
|
||||
unsigned int rate_multi, unsigned int *port_map)
|
||||
@ -1455,22 +1546,6 @@ static int dsp_allocate_ports(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
static int dsp_free_ports(struct hda_codec *codec)
|
||||
{
|
||||
int status;
|
||||
|
||||
snd_printdd(KERN_INFO " dsp_free_ports() -- begin");
|
||||
|
||||
status = dsp_free_router_ports(codec);
|
||||
if (status < 0) {
|
||||
snd_printdd(KERN_ERR "free router ports fail");
|
||||
return status;
|
||||
}
|
||||
snd_printdd(KERN_INFO " dsp_free_ports() -- complete");
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
static int dsp_allocate_ports_format(struct hda_codec *codec,
|
||||
const unsigned short fmt,
|
||||
unsigned int *port_map)
|
||||
@ -1494,6 +1569,25 @@ static int dsp_allocate_ports_format(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* free DSP ports
|
||||
*/
|
||||
static int dsp_free_ports(struct hda_codec *codec)
|
||||
{
|
||||
int status;
|
||||
|
||||
snd_printdd(KERN_INFO " dsp_free_ports() -- begin");
|
||||
|
||||
status = dsp_free_router_ports(codec);
|
||||
if (status < 0) {
|
||||
snd_printdd(KERN_ERR "free router ports fail");
|
||||
return status;
|
||||
}
|
||||
snd_printdd(KERN_INFO " dsp_free_ports() -- complete");
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* HDA DMA engine stuffs for DSP code download
|
||||
*/
|
||||
@ -1528,6 +1622,9 @@ static int dma_convert_to_hda_format(
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Reset DMA for DSP download
|
||||
*/
|
||||
static int dma_reset(struct dma_engine *dma)
|
||||
{
|
||||
struct hda_codec *codec = dma->codec;
|
||||
@ -1642,6 +1739,11 @@ static const struct dsp_image_seg *get_next_seg_ptr(
|
||||
*/
|
||||
#define INVALID_DMA_CHANNEL (~0UL)
|
||||
|
||||
/*
|
||||
* Program a list of address/data pairs via the ChipIO widget.
|
||||
* The segment data is in the format of successive pairs of words.
|
||||
* These are repeated as indicated by the segment's count field.
|
||||
*/
|
||||
static int dspxfr_hci_write(struct hda_codec *codec,
|
||||
const struct dsp_image_seg *fls)
|
||||
{
|
||||
@ -1668,6 +1770,21 @@ static int dspxfr_hci_write(struct hda_codec *codec,
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Write a block of data into DSP code or data RAM using pre-allocated
|
||||
* DMA engine.
|
||||
*
|
||||
* @codec: the HDA codec
|
||||
* @fls: pointer to a fast load image
|
||||
* @reloc: Relocation address for loading single-segment overlays, or 0 for
|
||||
* no relocation
|
||||
* @dma_engine: pointer to DMA engine to be used for DSP download
|
||||
* @dma_chan: The number of DMA channels used for DSP download
|
||||
* @port_map_mask: port mapping
|
||||
* @ovly: TRUE if overlay format is required
|
||||
*
|
||||
* Returns zero or a negative error code.
|
||||
*/
|
||||
static int dspxfr_one_seg(struct hda_codec *codec,
|
||||
const struct dsp_image_seg *fls,
|
||||
unsigned int reloc,
|
||||
@ -1836,6 +1953,18 @@ static int dspxfr_one_seg(struct hda_codec *codec,
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* Write the entire DSP image of a DSP code/data overlay to DSP memories
|
||||
*
|
||||
* @codec: the HDA codec
|
||||
* @fls_data: pointer to a fast load image
|
||||
* @reloc: Relocation address for loading single-segment overlays, or 0 for
|
||||
* no relocation
|
||||
* @format: format of the stream used for DSP download
|
||||
* @ovly: TRUE if overlay format is required
|
||||
*
|
||||
* Returns zero or a negative error code.
|
||||
*/
|
||||
static int dspxfr_image(struct hda_codec *codec,
|
||||
const struct dsp_image_seg *fls_data,
|
||||
unsigned int reloc, struct hda_stream_format *format,
|
||||
@ -1970,6 +2099,23 @@ static void dspload_post_setup(struct hda_codec *codec)
|
||||
chipio_write(codec, XRAM_XRAM_INST_OFFSET(0x29), 0x00000002);
|
||||
}
|
||||
|
||||
/**
|
||||
* Download DSP from a DSP Image Fast Load structure. This structure is a
|
||||
* linear, non-constant sized element array of structures, each of which
|
||||
* contain the count of the data to be loaded, the data itself, and the
|
||||
* corresponding starting chip address of the starting data location.
|
||||
*
|
||||
* @codec: the HDA codec
|
||||
* @fls: pointer to a fast load image
|
||||
* @ovly: TRUE if overlay format is required
|
||||
* @reloc: Relocation address for loading single-segment overlays, or 0 for
|
||||
* no relocation
|
||||
* @autostart: TRUE if DSP starts after loading; ignored if ovly is TRUE
|
||||
* @router_chans: number of audio router channels to be allocated (0 means use
|
||||
* internal defaults; max is 32)
|
||||
*
|
||||
* Returns zero or a negative error code.
|
||||
*/
|
||||
static int dspload_image(struct hda_codec *codec,
|
||||
const struct dsp_image_seg *fls,
|
||||
bool ovly,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user