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soundwire updates for v5.5-rc1

Browse Source 
This round we have bunch of core and Intel driver updates spearheaded
 by Pierre
 
 Details
  - Update unique id checks in core and ACPI helpers
  - Improvements to to Intel driver and cadence lib
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Merge tag 'soundwire-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next

Vinod writes:

soundwire updates for v5.5-rc1

This round we have bunch of core and Intel driver updates spearheaded
by Pierre

Details
 - Update unique id checks in core and ACPI helpers
 - Improvements to to Intel driver and cadence lib

* tag 'soundwire-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: ignore uniqueID when irrelevant
  soundwire: slave: add helper to extract slave ID
  soundwire: remove bitfield for unique_id, use u8
  soundwire: intel: fix PDI/stream mapping for Bulk
  soundwire: cadence_master: make clock stop exit configurable on init
  soundwire: intel/cadence: add flag for interrupt enable
  soundwire: intel: add helper for initialization
  soundwire: cadence_master: add hw_reset capability in debugfs
  soundwire: intel/cadence: fix startup sequence
  soundwire: intel: use correct header for io calls
  soundwire: cadence_master: improve PDI allocation
  soundwire: intel: don't filter out PDI0/1
  soundwire: cadence/intel: simplify PDI/port mapping
  soundwire: intel: remove playback/capture stream_name
  soundwire: remove DAI_ID_RANGE definitions
  soundwire: intel: remove X86 dependency
  soundwire: intel: add missing headers for cross-compilation
This commit is contained in:
Greg Kroah-Hartman 2019-11-09 13:18:25 +01:00
commit a61ead03a6
8 changed files with 297 additions and 354 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/soundwire/Kconfig
View File

@ -23,7 +23,7 @@ config SOUNDWIRE_CADENCE
config SOUNDWIRE_INTEL
tristate "Intel SoundWire Master driver"
select SOUNDWIRE_CADENCE
depends on X86 && ACPI && SND_SOC
depends on ACPI && SND_SOC
help
SoundWire Intel Master driver.
If you have an Intel platform which has a SoundWire Master then

7
drivers/soundwire/bus.c
View File

@ -422,10 +422,11 @@ static struct sdw_slave *sdw_get_slave(struct sdw_bus *bus, int i)
static int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id)
{
if (slave->id.unique_id != id.unique_id ||
slave->id.mfg_id != id.mfg_id ||
if (slave->id.mfg_id != id.mfg_id ||
slave->id.part_id != id.part_id ||
slave->id.class_id != id.class_id)
slave->id.class_id != id.class_id ||
(slave->id.unique_id != SDW_IGNORED_UNIQUE_ID &&
slave->id.unique_id != id.unique_id))
return -ENODEV;
return 0;

292
drivers/soundwire/cadence_master.c
View File

@ -183,9 +183,6 @@ MODULE_PARM_DESC(cdns_mcp_int_mask, "Cadence MCP IntMask");
#define CDNS_DEFAULT_SSP_INTERVAL 0x18
#define CDNS_TX_TIMEOUT 2000
#define CDNS_PCM_PDI_OFFSET 0x2
#define CDNS_PDM_PDI_OFFSET 0x6
#define CDNS_SCP_RX_FIFOLEVEL 0x2
/*
@ -231,6 +228,22 @@ static int cdns_clear_bit(struct sdw_cdns *cdns, int offset, u32 value)
return -EAGAIN;
}
/*
* all changes to the MCP_CONFIG, MCP_CONTROL, MCP_CMDCTRL and MCP_PHYCTRL
* need to be confirmed with a write to MCP_CONFIG_UPDATE
*/
static int cdns_update_config(struct sdw_cdns *cdns)
{
int ret;
ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE,
CDNS_MCP_CONFIG_UPDATE_BIT);
if (ret < 0)
dev_err(cdns->dev, "Config update timedout\n");
return ret;
}
/*
* debugfs
*/
@ -279,11 +292,7 @@ static int cdns_reg_show(struct seq_file *s, void *data)
ret += scnprintf(buf + ret, RD_BUF - ret,
"\nDPn B0 Registers\n");
/*
* in sdw_cdns_pdi_init() we filter out the Bulk PDIs,
* so the indices need to be corrected again
*/
num_ports = cdns->num_ports + CDNS_PCM_PDI_OFFSET;
num_ports = cdns->num_ports;
for (i = 0; i < num_ports; i++) {
ret += scnprintf(buf + ret, RD_BUF - ret,
@ -324,6 +333,26 @@ static int cdns_reg_show(struct seq_file *s, void *data)
}
DEFINE_SHOW_ATTRIBUTE(cdns_reg);
static int cdns_hw_reset(void *data, u64 value)
{
struct sdw_cdns *cdns = data;
int ret;
if (value != 1)
return -EINVAL;
/* Userspace changed the hardware state behind the kernel's back */
add_taint(TAINT_USER, LOCKDEP_STILL_OK);
ret = sdw_cdns_exit_reset(cdns);
dev_dbg(cdns->dev, "link hw_reset done: %d\n", ret);
return ret;
}
DEFINE_DEBUGFS_ATTRIBUTE(cdns_hw_reset_fops, NULL, cdns_hw_reset, "%llu\n");
/**
* sdw_cdns_debugfs_init() - Cadence debugfs init
* @cdns: Cadence instance
@ -332,6 +361,9 @@ DEFINE_SHOW_ATTRIBUTE(cdns_reg);
void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root)
{
debugfs_create_file("cdns-registers", 0400, root, cdns, &cdns_reg_fops);
debugfs_create_file("cdns-hw-reset", 0200, root, cdns,
&cdns_hw_reset_fops);
}
EXPORT_SYMBOL_GPL(sdw_cdns_debugfs_init);
@ -752,14 +784,48 @@ EXPORT_SYMBOL(sdw_cdns_thread);
/*
* init routines
*/
static int _cdns_enable_interrupt(struct sdw_cdns *cdns)
{
u32 mask;
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0,
CDNS_MCP_SLAVE_INTMASK0_MASK);
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1,
CDNS_MCP_SLAVE_INTMASK1_MASK);
/**
* sdw_cdns_exit_reset() - Program reset parameters and start bus operations
* @cdns: Cadence instance
*/
int sdw_cdns_exit_reset(struct sdw_cdns *cdns)
{
/* program maximum length reset to be safe */
cdns_updatel(cdns, CDNS_MCP_CONTROL,
CDNS_MCP_CONTROL_RST_DELAY,
CDNS_MCP_CONTROL_RST_DELAY);
/* use hardware generated reset */
cdns_updatel(cdns, CDNS_MCP_CONTROL,
CDNS_MCP_CONTROL_HW_RST,
CDNS_MCP_CONTROL_HW_RST);
/* enable bus operations with clock and data */
cdns_updatel(cdns, CDNS_MCP_CONFIG,
CDNS_MCP_CONFIG_OP,
CDNS_MCP_CONFIG_OP_NORMAL);
/* commit changes */
return cdns_update_config(cdns);
}
EXPORT_SYMBOL(sdw_cdns_exit_reset);
/**
* sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
* @cdns: Cadence instance
*/
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state)
{
u32 slave_intmask0 = 0;
u32 slave_intmask1 = 0;
u32 mask = 0;
if (!state)
goto update_masks;
slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK;
slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK;
/* enable detection of all slave state changes */
mask = CDNS_MCP_INT_SLAVE_MASK;
@ -782,26 +848,13 @@ static int _cdns_enable_interrupt(struct sdw_cdns *cdns)
if (interrupt_mask) /* parameter override */
mask = interrupt_mask;
update_masks:
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0);
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1);
cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
return 0;
}
/**
* sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
* @cdns: Cadence instance
*/
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns)
{
int ret;
_cdns_enable_interrupt(cdns);
ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE,
CDNS_MCP_CONFIG_UPDATE_BIT);
if (ret < 0)
dev_err(cdns->dev, "Config update timedout\n");
return ret;
/* commit changes */
return cdns_update_config(cdns);
}
EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
@ -821,7 +874,6 @@ static int cdns_allocate_pdi(struct sdw_cdns *cdns,
for (i = 0; i < num; i++) {
pdi[i].num = i + pdi_offset;
pdi[i].assigned = false;
}
*stream = pdi;
@ -838,7 +890,8 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
struct sdw_cdns_stream_config config)
{
struct sdw_cdns_streams *stream;
int offset, i, ret;
int offset;
int ret;
cdns->pcm.num_bd = config.pcm_bd;
cdns->pcm.num_in = config.pcm_in;
@ -850,11 +903,8 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
/* Allocate PDIs for PCMs */
stream = &cdns->pcm;
/* First two PDIs are reserved for bulk transfers */
if (stream->num_bd < CDNS_PCM_PDI_OFFSET)
return -EINVAL;
stream->num_bd -= CDNS_PCM_PDI_OFFSET;
offset = CDNS_PCM_PDI_OFFSET;
/* we allocate PDI0 and PDI1 which are used for Bulk */
offset = 0;
ret = cdns_allocate_pdi(cdns, &stream->bd,
stream->num_bd, offset);
@ -881,7 +931,6 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
/* Allocate PDIs for PDMs */
stream = &cdns->pdm;
offset = CDNS_PDM_PDI_OFFSET;
ret = cdns_allocate_pdi(cdns, &stream->bd,
stream->num_bd, offset);
if (ret)
@ -898,6 +947,9 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
ret = cdns_allocate_pdi(cdns, &stream->out,
stream->num_out, offset);
offset += stream->num_out;
if (ret)
return ret;
@ -905,18 +957,6 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
stream->num_pdi = stream->num_bd + stream->num_in + stream->num_out;
cdns->num_ports += stream->num_pdi;
cdns->ports = devm_kcalloc(cdns->dev, cdns->num_ports,
sizeof(*cdns->ports), GFP_KERNEL);
if (!cdns->ports) {
ret = -ENOMEM;
return ret;
}
for (i = 0; i < cdns->num_ports; i++) {
cdns->ports[i].assigned = false;
cdns->ports[i].num = i + 1; /* Port 0 reserved for bulk */
}
return 0;
}
EXPORT_SYMBOL(sdw_cdns_pdi_init);
@ -939,7 +979,7 @@ static u32 cdns_set_initial_frame_shape(int n_rows, int n_cols)
* sdw_cdns_init() - Cadence initialization
* @cdns: Cadence instance
*/
int sdw_cdns_init(struct sdw_cdns *cdns)
int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit)
{
struct sdw_bus *bus = &cdns->bus;
struct sdw_master_prop *prop = &bus->prop;
@ -947,12 +987,13 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
int divider;
int ret;
/* Exit clock stop */
ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL,
CDNS_MCP_CONTROL_CLK_STOP_CLR);
if (ret < 0) {
dev_err(cdns->dev, "Couldn't exit from clock stop\n");
return ret;
if (clock_stop_exit) {
ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL,
CDNS_MCP_CONTROL_CLK_STOP_CLR);
if (ret < 0) {
dev_err(cdns->dev, "Couldn't exit from clock stop\n");
return ret;
}
}
/* Set clock divider */
@ -975,6 +1016,10 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, CDNS_DEFAULT_SSP_INTERVAL);
cdns_writel(cdns, CDNS_MCP_SSP_CTRL1, CDNS_DEFAULT_SSP_INTERVAL);
/* flush command FIFOs */
cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_CMD_RST,
CDNS_MCP_CONTROL_CMD_RST);
/* Set cmd accept mode */
cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_CMD_ACCEPT,
CDNS_MCP_CONTROL_CMD_ACCEPT);
@ -997,13 +1042,10 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
/* Set cmd mode for Tx and Rx cmds */
val &= ~CDNS_MCP_CONFIG_CMD;
/* Set operation to normal */
val &= ~CDNS_MCP_CONFIG_OP;
val |= CDNS_MCP_CONFIG_OP_NORMAL;
cdns_writel(cdns, CDNS_MCP_CONFIG, val);
return 0;
/* commit changes */
return cdns_update_config(cdns);
}
EXPORT_SYMBOL(sdw_cdns_init);
@ -1185,20 +1227,20 @@ EXPORT_SYMBOL(cdns_set_sdw_stream);
* @num: Number of PDIs
* @pdi: PDI instances
*
* Find and return a free PDI for a given PDI array
* Find a PDI for a given PDI array. The PDI num and dai_id are
* expected to match, return NULL otherwise.
*/
static struct sdw_cdns_pdi *cdns_find_pdi(struct sdw_cdns *cdns,
unsigned int offset,
unsigned int num,
struct sdw_cdns_pdi *pdi)
struct sdw_cdns_pdi *pdi,
int dai_id)
{
int i;
for (i = 0; i < num; i++) {
if (pdi[i].assigned)
continue;
pdi[i].assigned = true;
return &pdi[i];
}
for (i = offset; i < offset + num; i++)
if (pdi[i].num == dai_id)
return &pdi[i];
return NULL;
}
@ -1207,13 +1249,11 @@ static struct sdw_cdns_pdi *cdns_find_pdi(struct sdw_cdns *cdns,
* sdw_cdns_config_stream: Configure a stream
*
* @cdns: Cadence instance
* @port: Cadence data port
* @ch: Channel count
* @dir: Data direction
* @pdi: PDI to be used
*/
void sdw_cdns_config_stream(struct sdw_cdns *cdns,
struct sdw_cdns_port *port,
u32 ch, u32 dir, struct sdw_cdns_pdi *pdi)
{
u32 offset, val = 0;
@ -1221,113 +1261,51 @@ void sdw_cdns_config_stream(struct sdw_cdns *cdns,
if (dir == SDW_DATA_DIR_RX)
val = CDNS_PORTCTRL_DIRN;
offset = CDNS_PORTCTRL + port->num * CDNS_PORT_OFFSET;
offset = CDNS_PORTCTRL + pdi->num * CDNS_PORT_OFFSET;
cdns_updatel(cdns, offset, CDNS_PORTCTRL_DIRN, val);
val = port->num;
val = pdi->num;
val |= ((1 << ch) - 1) << SDW_REG_SHIFT(CDNS_PDI_CONFIG_CHANNEL);
cdns_writel(cdns, CDNS_PDI_CONFIG(pdi->num), val);
}
EXPORT_SYMBOL(sdw_cdns_config_stream);
/**
* cdns_get_num_pdi() - Get number of PDIs required
*
* @cdns: Cadence instance
* @pdi: PDI to be used
* @num: Number of PDIs
* @ch_count: Channel count
*/
static int cdns_get_num_pdi(struct sdw_cdns *cdns,
struct sdw_cdns_pdi *pdi,
unsigned int num, u32 ch_count)
{
int i, pdis = 0;
for (i = 0; i < num; i++) {
if (pdi[i].assigned)
continue;
if (pdi[i].ch_count < ch_count)
ch_count -= pdi[i].ch_count;
else
ch_count = 0;
pdis++;
if (!ch_count)
break;
}
if (ch_count)
return 0;
return pdis;
}
/**
* sdw_cdns_get_stream() - Get stream information
* sdw_cdns_alloc_pdi() - Allocate a PDI
*
* @cdns: Cadence instance
* @stream: Stream to be allocated
* @ch: Channel count
* @dir: Data direction
*/
int sdw_cdns_get_stream(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
u32 ch, u32 dir)
{
int pdis = 0;
if (dir == SDW_DATA_DIR_RX)
pdis = cdns_get_num_pdi(cdns, stream->in, stream->num_in, ch);
else
pdis = cdns_get_num_pdi(cdns, stream->out, stream->num_out, ch);
/* check if we found PDI, else find in bi-directional */
if (!pdis)
pdis = cdns_get_num_pdi(cdns, stream->bd, stream->num_bd, ch);
return pdis;
}
EXPORT_SYMBOL(sdw_cdns_get_stream);
/**
* sdw_cdns_alloc_stream() - Allocate a stream
*
* @cdns: Cadence instance
* @stream: Stream to be allocated
* @port: Cadence data port
* @ch: Channel count
* @dir: Data direction
*/
int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
struct sdw_cdns_port *port, u32 ch, u32 dir)
struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
u32 ch, u32 dir, int dai_id)
{
struct sdw_cdns_pdi *pdi = NULL;
if (dir == SDW_DATA_DIR_RX)
pdi = cdns_find_pdi(cdns, stream->num_in, stream->in);
pdi = cdns_find_pdi(cdns, 0, stream->num_in, stream->in,
dai_id);
else
pdi = cdns_find_pdi(cdns, stream->num_out, stream->out);
pdi = cdns_find_pdi(cdns, 0, stream->num_out, stream->out,
dai_id);
/* check if we found a PDI, else find in bi-directional */
if (!pdi)
pdi = cdns_find_pdi(cdns, stream->num_bd, stream->bd);
pdi = cdns_find_pdi(cdns, 2, stream->num_bd, stream->bd,
dai_id);
if (!pdi)
return -EIO;
if (pdi) {
pdi->l_ch_num = 0;
pdi->h_ch_num = ch - 1;
pdi->dir = dir;
pdi->ch_count = ch;
}
port->pdi = pdi;
pdi->l_ch_num = 0;
pdi->h_ch_num = ch - 1;
pdi->dir = dir;
pdi->ch_count = ch;
return 0;
return pdi;
}
EXPORT_SYMBOL(sdw_cdns_alloc_stream);
EXPORT_SYMBOL(sdw_cdns_alloc_pdi);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Cadence Soundwire Library");

39
drivers/soundwire/cadence_master.h
View File

@ -8,7 +8,6 @@
/**
* struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
*
* @assigned: pdi assigned
* @num: pdi number
* @intel_alh_id: link identifier
* @l_ch_num: low channel for PDI
@ -18,7 +17,6 @@
* @type: stream type, PDM or PCM
*/
struct sdw_cdns_pdi {
bool assigned;
int num;
int intel_alh_id;
int l_ch_num;
@ -28,23 +26,6 @@ struct sdw_cdns_pdi {
enum sdw_stream_type type;
};
/**
* struct sdw_cdns_port: Cadence port structure
*
* @num: port number
* @assigned: port assigned
* @ch: channel count
* @direction: data port direction
* @pdi: pdi for this port
*/
struct sdw_cdns_port {
unsigned int num;
bool assigned;
unsigned int ch;
enum sdw_data_direction direction;
struct sdw_cdns_pdi *pdi;
};
/**
* struct sdw_cdns_streams: Cadence stream data structure
*
@ -95,8 +76,8 @@ struct sdw_cdns_stream_config {
* struct sdw_cdns_dma_data: Cadence DMA data
*
* @name: SoundWire stream name
* @nr_ports: Number of ports
* @port: Ports
* @stream: stream runtime
* @pdi: PDI used for this dai
* @bus: Bus handle
* @stream_type: Stream type
* @link_id: Master link id
@ -104,8 +85,7 @@ struct sdw_cdns_stream_config {
struct sdw_cdns_dma_data {
char *name;
struct sdw_stream_runtime *stream;
int nr_ports;
struct sdw_cdns_port **port;
struct sdw_cdns_pdi *pdi;
struct sdw_bus *bus;
enum sdw_stream_type stream_type;
int link_id;
@ -158,10 +138,11 @@ extern struct sdw_master_ops sdw_cdns_master_ops;
irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
int sdw_cdns_init(struct sdw_cdns *cdns);
int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit);
int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
struct sdw_cdns_stream_config config);
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
int sdw_cdns_exit_reset(struct sdw_cdns *cdns);
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
#ifdef CONFIG_DEBUG_FS
void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
@ -170,10 +151,10 @@ void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
int sdw_cdns_get_stream(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
u32 ch, u32 dir);
int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
struct sdw_cdns_port *port, u32 ch, u32 dir);
void sdw_cdns_config_stream(struct sdw_cdns *cdns, struct sdw_cdns_port *port,
struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns,
struct sdw_cdns_streams *stream,
u32 ch, u32 dir, int dai_id);
void sdw_cdns_config_stream(struct sdw_cdns *cdns,
u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,

203
drivers/soundwire/intel.c
View File

@ -10,6 +10,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@ -479,7 +480,10 @@ intel_pdi_shim_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi)
unsigned int link_id = sdw->instance;
int pdi_conf = 0;
pdi->intel_alh_id = (link_id * 16) + pdi->num + 5;
/* the Bulk and PCM streams are not contiguous */
pdi->intel_alh_id = (link_id * 16) + pdi->num + 3;
if (pdi->num >= 2)
pdi->intel_alh_id += 2;
/*
* Program stream parameters to stream SHIM register
@ -508,7 +512,10 @@ intel_pdi_alh_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi)
unsigned int link_id = sdw->instance;
unsigned int conf;
pdi->intel_alh_id = (link_id * 16) + pdi->num + 5;
/* the Bulk and PCM streams are not contiguous */
pdi->intel_alh_id = (link_id * 16) + pdi->num + 3;
if (pdi->num >= 2)
pdi->intel_alh_id += 2;
/* Program Stream config ALH register */
conf = intel_readl(alh, SDW_ALH_STRMZCFG(pdi->intel_alh_id));
@ -603,66 +610,6 @@ static int intel_post_bank_switch(struct sdw_bus *bus)
* DAI routines
*/
static struct sdw_cdns_port *intel_alloc_port(struct sdw_intel *sdw,
u32 ch, u32 dir, bool pcm)
{
struct sdw_cdns *cdns = &sdw->cdns;
struct sdw_cdns_port *port = NULL;
int i, ret = 0;
for (i = 0; i < cdns->num_ports; i++) {
if (cdns->ports[i].assigned)
continue;
port = &cdns->ports[i];
port->assigned = true;
port->direction = dir;
port->ch = ch;
break;
}
if (!port) {
dev_err(cdns->dev, "Unable to find a free port\n");
return NULL;
}
if (pcm) {
ret = sdw_cdns_alloc_stream(cdns, &cdns->pcm, port, ch, dir);
if (ret)
goto out;
intel_pdi_shim_configure(sdw, port->pdi);
sdw_cdns_config_stream(cdns, port, ch, dir, port->pdi);
intel_pdi_alh_configure(sdw, port->pdi);
} else {
ret = sdw_cdns_alloc_stream(cdns, &cdns->pdm, port, ch, dir);
}
out:
if (ret) {
port->assigned = false;
port = NULL;
}
return port;
}
static void intel_port_cleanup(struct sdw_cdns_dma_data *dma)
{
int i;
for (i = 0; i < dma->nr_ports; i++) {
if (dma->port[i]) {
dma->port[i]->pdi->assigned = false;
dma->port[i]->pdi = NULL;
dma->port[i]->assigned = false;
dma->port[i] = NULL;
}
}
}
static int intel_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@ -670,9 +617,11 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_cdns_dma_data *dma;
struct sdw_cdns_pdi *pdi;
struct sdw_stream_config sconfig;
struct sdw_port_config *pconfig;
int ret, i, ch, dir;
int ch, dir;
int ret;
bool pcm = true;
dma = snd_soc_dai_get_dma_data(dai, substream);
@ -685,38 +634,30 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
else
dir = SDW_DATA_DIR_TX;
if (dma->stream_type == SDW_STREAM_PDM) {
/* TODO: Check whether PDM decimator is already in use */
dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pdm, ch, dir);
if (dma->stream_type == SDW_STREAM_PDM)
pcm = false;
} else {
dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pcm, ch, dir);
if (pcm)
pdi = sdw_cdns_alloc_pdi(cdns, &cdns->pcm, ch, dir, dai->id);
else
pdi = sdw_cdns_alloc_pdi(cdns, &cdns->pdm, ch, dir, dai->id);
if (!pdi) {
ret = -EINVAL;
goto error;
}
if (!dma->nr_ports) {
dev_err(dai->dev, "ports/resources not available\n");
return -EINVAL;
}
/* do run-time configurations for SHIM, ALH and PDI/PORT */
intel_pdi_shim_configure(sdw, pdi);
intel_pdi_alh_configure(sdw, pdi);
sdw_cdns_config_stream(cdns, ch, dir, pdi);
dma->port = kcalloc(dma->nr_ports, sizeof(*dma->port), GFP_KERNEL);
if (!dma->port)
return -ENOMEM;
for (i = 0; i < dma->nr_ports; i++) {
dma->port[i] = intel_alloc_port(sdw, ch, dir, pcm);
if (!dma->port[i]) {
ret = -EINVAL;
goto port_error;
}
}
/* Inform DSP about PDI stream number */
for (i = 0; i < dma->nr_ports; i++) {
ret = intel_config_stream(sdw, substream, dai, params,
dma->port[i]->pdi->intel_alh_id);
if (ret)
goto port_error;
}
ret = intel_config_stream(sdw, substream, dai, params,
pdi->intel_alh_id);
if (ret)
goto error;
sconfig.direction = dir;
sconfig.ch_count = ch;
@ -731,32 +672,22 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
}
/* Port configuration */
pconfig = kcalloc(dma->nr_ports, sizeof(*pconfig), GFP_KERNEL);
pconfig = kcalloc(1, sizeof(*pconfig), GFP_KERNEL);
if (!pconfig) {
ret = -ENOMEM;
goto port_error;
goto error;
}
for (i = 0; i < dma->nr_ports; i++) {
pconfig[i].num = dma->port[i]->num;
pconfig[i].ch_mask = (1 << ch) - 1;
}
pconfig->num = pdi->num;
pconfig->ch_mask = (1 << ch) - 1;
ret = sdw_stream_add_master(&cdns->bus, &sconfig,
pconfig, dma->nr_ports, dma->stream);
if (ret) {
pconfig, 1, dma->stream);
if (ret)
dev_err(cdns->dev, "add master to stream failed:%d\n", ret);
goto stream_error;
}
kfree(pconfig);
return ret;
stream_error:
kfree(pconfig);
port_error:
intel_port_cleanup(dma);
kfree(dma->port);
error:
return ret;
}
@ -776,8 +707,6 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
dev_err(dai->dev, "remove master from stream %s failed: %d\n",
dma->stream->name, ret);
intel_port_cleanup(dma);
kfree(dma->port);
return ret;
}
@ -842,14 +771,6 @@ static int intel_create_dai(struct sdw_cdns *cdns,
return -ENOMEM;
if (type == INTEL_PDI_BD || type == INTEL_PDI_OUT) {
dais[i].playback.stream_name =
kasprintf(GFP_KERNEL, "SDW%d Tx%d",
cdns->instance, i);
if (!dais[i].playback.stream_name) {
kfree(dais[i].name);
return -ENOMEM;
}
dais[i].playback.channels_min = 1;
dais[i].playback.channels_max = max_ch;
dais[i].playback.rates = SNDRV_PCM_RATE_48000;
@ -857,23 +778,12 @@ static int intel_create_dai(struct sdw_cdns *cdns,
}
if (type == INTEL_PDI_BD || type == INTEL_PDI_IN) {
dais[i].capture.stream_name =
kasprintf(GFP_KERNEL, "SDW%d Rx%d",
cdns->instance, i);
if (!dais[i].capture.stream_name) {
kfree(dais[i].name);
kfree(dais[i].playback.stream_name);
return -ENOMEM;
}
dais[i].capture.channels_min = 1;
dais[i].capture.channels_max = max_ch;
dais[i].capture.rates = SNDRV_PCM_RATE_48000;
dais[i].capture.formats = SNDRV_PCM_FMTBIT_S16_LE;
}
dais[i].id = SDW_DAI_ID_RANGE_START + i;
if (pcm)
dais[i].ops = &intel_pcm_dai_ops;
else
@ -993,6 +903,15 @@ static struct sdw_master_ops sdw_intel_ops = {
.post_bank_switch = intel_post_bank_switch,
};
static int intel_init(struct sdw_intel *sdw)
{
/* Initialize shim and controller */
intel_link_power_up(sdw);
intel_shim_init(sdw);
return sdw_cdns_init(&sdw->cdns, false);
}
/*
* probe and init
*/
@ -1026,7 +945,7 @@ static int intel_probe(struct platform_device *pdev)
ret = sdw_add_bus_master(&sdw->cdns.bus);
if (ret) {
dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret);
goto err_master_reg;
return ret;
}
if (sdw->cdns.bus.prop.hw_disabled) {
@ -1035,16 +954,11 @@ static int intel_probe(struct platform_device *pdev)
return 0;
}
/* Initialize shim and controller */
intel_link_power_up(sdw);
intel_shim_init(sdw);
ret = sdw_cdns_init(&sdw->cdns);
/* Initialize shim, controller and Cadence IP */
ret = intel_init(sdw);
if (ret)
goto err_init;
ret = sdw_cdns_enable_interrupt(&sdw->cdns);
/* Read the PDI config and initialize cadence PDI */
intel_pdi_init(sdw, &config);
ret = sdw_cdns_pdi_init(&sdw->cdns, config);
@ -1062,23 +976,35 @@ static int intel_probe(struct platform_device *pdev)
goto err_init;
}
ret = sdw_cdns_enable_interrupt(&sdw->cdns, true);
if (ret < 0) {
dev_err(sdw->cdns.dev, "cannot enable interrupts\n");
goto err_init;
}
ret = sdw_cdns_exit_reset(&sdw->cdns);
if (ret < 0) {
dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n");
goto err_interrupt;
}
/* Register DAIs */
ret = intel_register_dai(sdw);
if (ret) {
dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret);
snd_soc_unregister_component(sdw->cdns.dev);
goto err_dai;
goto err_interrupt;
}
intel_debugfs_init(sdw);
return 0;
err_dai:
err_interrupt:
sdw_cdns_enable_interrupt(&sdw->cdns, false);
free_irq(sdw->res->irq, sdw);
err_init:
sdw_delete_bus_master(&sdw->cdns.bus);
err_master_reg:
return ret;
}
@ -1090,6 +1016,7 @@ static int intel_remove(struct platform_device *pdev)
if (!sdw->cdns.bus.prop.hw_disabled) {
intel_debugfs_exit(sdw);
sdw_cdns_enable_interrupt(&sdw->cdns, false);
free_irq(sdw->res->irq, sdw);
snd_soc_unregister_component(sdw->cdns.dev);
}

1
drivers/soundwire/intel_init.c
View File

@ -9,6 +9,7 @@
#include <linux/acpi.h>
#include <linux/export.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/soundwire/sdw_intel.h>

100
drivers/soundwire/slave.c
View File

@ -29,10 +29,17 @@ static int sdw_slave_add(struct sdw_bus *bus,
slave->dev.parent = bus->dev;
slave->dev.fwnode = fwnode;
/* name shall be sdw:link:mfg:part:class:unique */
dev_set_name(&slave->dev, "sdw:%x:%x:%x:%x:%x",
bus->link_id, id->mfg_id, id->part_id,
id->class_id, id->unique_id);
if (id->unique_id == SDW_IGNORED_UNIQUE_ID) {
/* name shall be sdw:link:mfg:part:class */
dev_set_name(&slave->dev, "sdw:%x:%x:%x:%x",
bus->link_id, id->mfg_id, id->part_id,
id->class_id);
} else {
/* name shall be sdw:link:mfg:part:class:unique */
dev_set_name(&slave->dev, "sdw:%x:%x:%x:%x:%x",
bus->link_id, id->mfg_id, id->part_id,
id->class_id, id->unique_id);
}
slave->dev.release = sdw_slave_release;
slave->dev.bus = &sdw_bus_type;
@ -64,6 +71,36 @@ static int sdw_slave_add(struct sdw_bus *bus,
}
#if IS_ENABLED(CONFIG_ACPI)
static bool find_slave(struct sdw_bus *bus,
struct acpi_device *adev,
struct sdw_slave_id *id)
{
unsigned long long addr;
unsigned int link_id;
acpi_status status;
status = acpi_evaluate_integer(adev->handle,
METHOD_NAME__ADR, NULL, &addr);
if (ACPI_FAILURE(status)) {
dev_err(bus->dev, "_ADR resolution failed: %x\n",
status);
return false;
}
/* Extract link id from ADR, Bit 51 to 48 (included) */
link_id = (addr >> 48) & GENMASK(3, 0);
/* Check for link_id match */
if (link_id != bus->link_id)
return false;
sdw_extract_slave_id(bus, addr, id);
return true;
}
/*
* sdw_acpi_find_slaves() - Find Slave devices in Master ACPI node
* @bus: SDW bus instance
@ -73,6 +110,7 @@ static int sdw_slave_add(struct sdw_bus *bus,
int sdw_acpi_find_slaves(struct sdw_bus *bus)
{
struct acpi_device *adev, *parent;
struct acpi_device *adev2, *parent2;
parent = ACPI_COMPANION(bus->dev);
if (!parent) {
@ -81,28 +119,46 @@ int sdw_acpi_find_slaves(struct sdw_bus *bus)
}
list_for_each_entry(adev, &parent->children, node) {
unsigned long long addr;
struct sdw_slave_id id;
unsigned int link_id;
acpi_status status;
struct sdw_slave_id id2;
bool ignore_unique_id = true;
status = acpi_evaluate_integer(adev->handle,
METHOD_NAME__ADR, NULL, &addr);
if (ACPI_FAILURE(status)) {
dev_err(bus->dev, "_ADR resolution failed: %x\n",
status);
return status;
}
/* Extract link id from ADR, Bit 51 to 48 (included) */
link_id = (addr >> 48) & GENMASK(3, 0);
/* Check for link_id match */
if (link_id != bus->link_id)
if (!find_slave(bus, adev, &id))
continue;
sdw_extract_slave_id(bus, addr, &id);
/* brute-force O(N^2) search for duplicates */
parent2 = parent;
list_for_each_entry(adev2, &parent2->children, node) {
if (adev == adev2)
continue;
if (!find_slave(bus, adev2, &id2))
continue;
if (id.sdw_version != id2.sdw_version ||
id.mfg_id != id2.mfg_id ||
id.part_id != id2.part_id ||
id.class_id != id2.class_id)
continue;
if (id.unique_id != id2.unique_id) {
dev_dbg(bus->dev,
"Valid unique IDs %x %x for Slave mfg %x part %d\n",
id.unique_id, id2.unique_id,
id.mfg_id, id.part_id);
ignore_unique_id = false;
} else {
dev_err(bus->dev,
"Invalid unique IDs %x %x for Slave mfg %x part %d\n",
id.unique_id, id2.unique_id,
id.mfg_id, id.part_id);
return -ENODEV;
}
}
if (ignore_unique_id)
id.unique_id = SDW_IGNORED_UNIQUE_ID;
/*
* don't error check for sdw_slave_add as we want to continue

7
include/linux/soundwire/sdw.h
View File

@ -40,9 +40,6 @@ struct sdw_slave;
#define SDW_VALID_PORT_RANGE(n) ((n) <= 14 && (n) >= 1)
#define SDW_DAI_ID_RANGE_START 100
#define SDW_DAI_ID_RANGE_END 200
enum {
SDW_PORT_DIRN_SINK = 0,
SDW_PORT_DIRN_SOURCE,
@ -406,6 +403,8 @@ int sdw_slave_read_prop(struct sdw_slave *slave);
* SDW Slave Structures and APIs
*/
#define SDW_IGNORED_UNIQUE_ID 0xFF
/**
* struct sdw_slave_id - Slave ID
* @mfg_id: MIPI Manufacturer ID
@ -421,7 +420,7 @@ struct sdw_slave_id {
__u16 mfg_id;
__u16 part_id;
__u8 class_id;
__u8 unique_id:4;
__u8 unique_id;
__u8 sdw_version:4;
};