Add code to manage Uniperipheral player IP instances. These DAIs are dedicated to playback and support I2S and IEC mode.
Signed-off-by: Arnaud Pouliquen arnaud.pouliquen@st.com --- sound/soc/sti/uniperif.h | 133 ++++ sound/soc/sti/uniperif_player.c | 1367 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 1500 insertions(+) create mode 100644 sound/soc/sti/uniperif_player.c
diff --git a/sound/soc/sti/uniperif.h b/sound/soc/sti/uniperif.h index 043853e..02ac9a8 100644 --- a/sound/soc/sti/uniperif.h +++ b/sound/soc/sti/uniperif.h @@ -1097,3 +1097,136 @@ UNIPERIF_DBG_STANDBY_LEFT_SP_OFFSET(ip), \ UNIPERIF_DBG_STANDBY_LEFT_SP_SHIFT(ip), \ UNIPERIF_DBG_STANDBY_LEFT_SP_MASK(ip), value) + +/* + * uniperipheral IP capabilities + */ + +#define UNIPERIF_FIFO_SIZE 70 /* FIFO is 70 cells deep */ +#define UNIPERIF_FIFO_FRAMES 4 /* FDMA trigger limit in frames */ + +#define UNIPERIF_MIN_RATE 8000 +#define UNIPERIF_MAX_RATE 192000 + +#define UNIPERIF_MIN_CHANNELS 2 +#define UNIPERIF_MAX_CHANNELS 8 + +#define UNIPERIF_PERIODS_BYTES_MIN 128 +#define UNIPERIF_PERIODS_BYTES_MAX (64 * PAGE_SIZE) +#define UNIPERIF_PERIODS_MIN 2 +#define UNIPERIF_PERIODS_MAX 48 +#define UNIPERIF_BUFFER_BYTES_MAX (2048 * PAGE_SIZE) + +/* + * Uniperipheral IP revisions + */ +enum uniperif_version { + SND_ST_UNIPERIF_VERSION_UNKNOWN, + /* SASG1 (Orly), Newman */ + SND_ST_UNIPERIF_VERSION_C6AUD0_UNI_1_0, + /* SASC1, SASG2 (Orly2) */ + SND_ST_UNIPERIF_VERSION_UNI_PLR_1_0, + /* SASC1, SASG2 (Orly2), TELSS, Cannes */ + SND_ST_UNIPERIF_VERSION_UNI_RDR_1_0, + /* TELSS (SASC1) */ + SND_ST_UNIPERIF_VERSION_TDM_PLR_1_0, + /* Cannes/Monaco */ + SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0 +}; + +enum uniperif_type { + SND_ST_UNIPERIF_PLAYER_TYPE_NONE, + SND_ST_UNIPERIF_PLAYER_TYPE_HDMI, + SND_ST_UNIPERIF_PLAYER_TYPE_PCM, + SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF +}; + +enum uniperif_state { + UNIPERIF_STATE_STOPPED, + UNIPERIF_STATE_STARTED, + UNIPERIF_STATE_STANDBY, + UNIPERIF_STATE_UNDERFLOW, + UNIPERIF_STATE_OVERFLOW = UNIPERIF_STATE_UNDERFLOW, + UNIPERIF_STATE_XRUN +}; + +enum uniperif_iec958_encoding_mode { + UNIPERIF_IEC958_ENCODING_MODE_PCM, + UNIPERIF_IEC958_ENCODING_MODE_ENCODED +}; + +struct uniperif_info { + int ver; + int uni_num; /* instance value of the uniperipheral IP */ + enum uniperif_type player_type; + int underflow_enabled; /* Underflow recovery mode */ + int standby_enabled; + unsigned int suspend_delay; +}; + +struct uniperif_iec958_settings { + enum uniperif_iec958_encoding_mode encoding_mode; + struct snd_aes_iec958 iec958; +}; + +struct uniperif; + +struct uniperif_ops { + int (*open)(struct uniperif *player); + void (*close)(struct uniperif *player); + int (*prepare)(struct uniperif *player, + struct snd_pcm_runtime *runtime); + int (*trigger)(struct uniperif *player, int cmd); +}; + +struct uniperif { + /* System information */ + struct uniperif_info *info; + struct device *dev; + int ver; /* IP version, used by register access macros */ + struct regmap_field *clk_sel; + + /* capabilities */ + const struct snd_pcm_hardware *hw; + + /* Resources */ + struct resource *mem_region; + void *base; + unsigned long fifo_phys_address; + int irq; + + /* Clocks */ + struct clk *clk; + int clk_div; + int clk_adj; + int rate; + + /* Runtime data */ + enum uniperif_state state; + + struct snd_pcm_substream *substream; + + /* Specific to IEC958 player */ + struct uniperif_iec958_settings stream_settings; + spinlock_t lock; /* lock on resource updated by alsa controls */ + + /*alsa ctrl*/ + struct snd_kcontrol_new *snd_ctrls; + int num_ctrls; + + /* dai properties */ + unsigned int daifmt; + + /* DAI callbacks */ + const struct uniperif_ops *ops; + + /* work struct */ + struct delayed_work delayed_work; +}; + +/* uniperiph player*/ +int uni_player_init(struct platform_device *pdev, struct device_node *node, + struct uniperif **uni_player, int idx); +int uni_player_remove(struct platform_device *pdev); + +#endif diff --git a/sound/soc/sti/uniperif_player.c b/sound/soc/sti/uniperif_player.c new file mode 100644 index 0000000..702bcd5 --- /dev/null +++ b/sound/soc/sti/uniperif_player.c @@ -0,0 +1,1367 @@ +/* + * Copyright (C) STMicroelectronics SA 2015 + * Authors: Arnaud Pouliquen arnaud.pouliquen@st.com + * for STMicroelectronics. + * License terms: GNU General Public License (GPL), version 2 + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/mfd/syscon.h> + +#include <sound/asoundef.h> +#include <sound/soc.h> + +#include "uniperif.h" + +/* + * Some hardware-related definitions + */ + +#define DEFAULT_OVERSAMPLING 128 /* make all ip's running at same rate*/ + +#define MIN_IEC958_SAMPLE_RATE 32000 + +/* sys config registers definitions */ +#define SYS_CFG_AUDIO_GLUE 0xA4 +#define SYS_CFG_AUDI0_GLUE_PCM_CLKX 8 + +/* + * Driver specific types. + */ + +#define UNIPERIF_PLAYER_TYPE_IS_HDMI(p) \ + ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_HDMI) +#define UNIPERIF_PLAYER_TYPE_IS_PCM(p) \ + ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_PCM) +#define UNIPERIF_PLAYER_TYPE_IS_SPDIF(p) \ + ((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF) +#define UNIPERIF_PLAYER_TYPE_IS_IEC958(p) \ + (UNIPERIF_PLAYER_TYPE_IS_HDMI(p) || \ + UNIPERIF_PLAYER_TYPE_IS_SPDIF(p)) + +#define DUMP_REGISTER(r) \ + snd_iprintf(buffer, "AUD_UNIPERIF_%-23s (offset 0x%04x) = " \ + "0x%08x\n", __stringify(r), \ + UNIPERIF_##r##_OFFSET(player), \ + GET_UNIPERIF_##r(player)) + +#define UNIPERIF_PLAYER_CLK_ADJ_MIN -999999 +#define UNIPERIF_PLAYER_CLK_ADJ_MAX 1000000 +#define UNIPERIF_PLAYER_CLK_ADJ_STEP 1 + +#define MIN_AUTOSUPEND_DELAY_MS 100 + +static int uni_player_suspend(struct uniperif *player); + +static struct workqueue_struct *uni_player_wq; + +const struct snd_pcm_hardware uni_player_pcm_hw = { + .info = ( + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_PAUSE), + .formats = (SNDRV_PCM_FMTBIT_S32_LE | + SNDRV_PCM_FMTBIT_S16_LE), + + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = UNIPERIF_MIN_RATE, + .rate_max = UNIPERIF_MAX_RATE, + + .channels_min = UNIPERIF_MIN_CHANNELS, + .channels_max = UNIPERIF_MAX_CHANNELS, + + .periods_min = UNIPERIF_PERIODS_MIN, + .periods_max = UNIPERIF_PERIODS_MAX, + + .period_bytes_min = UNIPERIF_PERIODS_BYTES_MIN, + .period_bytes_max = UNIPERIF_PERIODS_BYTES_MAX, + .buffer_bytes_max = UNIPERIF_BUFFER_BYTES_MAX +}; + +static inline int reset_player(struct uniperif *player) +{ + int count = 10; + + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + while (GET_UNIPERIF_SOFT_RST_SOFT_RST(player) && count) { + udelay(5); + count--; + } + + if (!count) { + dev_err(player->dev, "Failed to reset uniperif"); + return -EIO; + } + + return 0; +} + +static inline int get_property_hdl(struct device *dev, struct device_node *np, + const char *prop, int idx) +{ + int sz = 0; + const __be32 *phandle; + + phandle = of_get_property(np, prop, &sz); + + if (!phandle) { + dev_err(dev, "%s: ERROR: DT-property '%s' missing or invalid!", + __func__, prop); + return -EINVAL; + } + + if (idx >= sz) { + dev_err(dev, "%s: ERROR: Array-index (%u) >= array-size (%u)!", + __func__, idx, sz); + return -EINVAL; + } + + return be32_to_cpup(phandle + idx); +} + +/* + * Uniperipheral player implementation + */ + +static void uni_player_work(struct work_struct *work) +{ + struct uniperif *player = + container_of(work, struct uniperif, delayed_work.work); + + spin_lock(&player->lock); + if (uni_player_suspend(player)) + dev_err(player->dev, "%s: failed to suspend player", __func__); + spin_unlock(&player->lock); +} + +static irqreturn_t uni_player_irq_handler(int irq, void *dev_id) +{ + irqreturn_t ret = IRQ_NONE; + struct uniperif *player = dev_id; + unsigned int status; + unsigned int tmp; + + /* Get interrupt status & clear them immediately */ + preempt_disable(); + status = GET_UNIPERIF_ITS(player); + SET_UNIPERIF_ITS_BCLR(player, status); + preempt_enable(); + + if ((player->state == UNIPERIF_STATE_STANDBY) || + (player->state == UNIPERIF_STATE_STOPPED)) { + /* unexpected IRQ: do nothing */ + dev_warn(player->dev, "unexpected IRQ: status flag: %#x", + status); + return IRQ_HANDLED; + }; + + snd_pcm_stream_lock(player->substream); + /* Check for fifo error (under run) */ + if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(player))) { + dev_err(player->dev, "FIFO underflow error detected"); + + /* Interrupt is just for information when underflow recovery */ + if (player->info->underflow_enabled) { + /* Update state to underflow */ + player->state = UNIPERIF_STATE_UNDERFLOW; + + } else { + /* Disable interrupt so doesn't continually fire */ + SET_UNIPERIF_ITM_BCLR_FIFO_ERROR(player); + + /* Stop the player */ + snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); + } + + ret = IRQ_HANDLED; + } + + /* Check for dma error (over run) */ + if (unlikely(status & UNIPERIF_ITS_DMA_ERROR_MASK(player))) { + dev_err(player->dev, "DMA error detected"); + + /* Disable interrupt so doesn't continually fire */ + SET_UNIPERIF_ITM_BCLR_DMA_ERROR(player); + + /* Stop the player */ + snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); + + ret = IRQ_HANDLED; + } + + /* Check for underflow recovery done */ + if (unlikely(status & + UNIPERIF_ITM_UNDERFLOW_REC_DONE_MASK(player))) { + if (!player->info->underflow_enabled) { + dev_err(player->dev, "unexpected Underflow recovering"); + snd_pcm_stream_unlock(player->substream); + return -EPERM; + } + /* Read the underflow recovery duration */ + tmp = GET_UNIPERIF_STATUS_1_UNDERFLOW_DURATION(player); + + /* Clear the underflow recovery duration */ + SET_UNIPERIF_BIT_CONTROL_CLR_UNDERFLOW_DURATION(player); + + /* Update state to started */ + player->state = UNIPERIF_STATE_STARTED; + + ret = IRQ_HANDLED; + } + + if (unlikely(status & + UNIPERIF_ITS_MEM_BLK_READ_MASK(player))) { + ret = IRQ_HANDLED; + } + + /* Checkf or underflow recovery failed */ + if (unlikely(status & + UNIPERIF_ITM_UNDERFLOW_REC_FAILED_MASK(player))) { + dev_err(player->dev, "Underflow recovery failed"); + + /* Stop the player */ + snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN); + + ret = IRQ_HANDLED; + } + + /* error on unhandled interrupt */ + if (ret != IRQ_HANDLED) + dev_err(player->dev, "IRQ status : %#x", status); + + snd_pcm_stream_unlock(player->substream); + return ret; +} + +int uni_player_clk_set_rate(struct uniperif *player, unsigned long rate) +{ + int rate_adjusted, rate_achieved, delta; + int adjustment = player->clk_adj; + + /* + * a + * F = f + --------- * f = f + d + * 1000000 + * + * a + * d = --------- * f + * 1000000 + * + * where: + * f - nominal rate + * a - adjustment in ppm (parts per milion) + * F - rate to be set in synthesizer + * d - delta (difference) between f and F + */ + if (adjustment < 0) { + /* div64_64 operates on unsigned values... */ + delta = -1; + adjustment = -adjustment; + } else { + delta = 1; + } + /* 500000 ppm is 0.5, which is used to round up values */ + delta *= (int)div64_u64((uint64_t)rate * + (uint64_t)adjustment + 500000, 1000000); + rate_adjusted = rate + delta; + + /* adjusted rate should never be == 0 */ + if (!rate_adjusted) + return -EINVAL; + + if (clk_set_rate(player->clk, rate_adjusted) < 0) { + dev_err(player->dev, "Failed to clk set rate %d !\n", + rate_adjusted); + return -EINVAL; + } + + rate_achieved = clk_get_rate(player->clk); + if (!rate_achieved) + return -EINVAL; + + /* + * using ALSA's adjustment control, we can modify the rate to be up + * to twice as much as requested, but no more + */ + delta = rate_achieved - rate; + if (delta < 0) { + /* div64_64 operates on unsigned values... */ + delta = -delta; + adjustment = -1; + } else { + adjustment = 1; + } + /* frequency/2 is added to round up result */ + adjustment *= (int)div64_u64((uint64_t)delta * 1000000 + rate / 2, + rate); + player->clk_adj = adjustment; + return 0; +} + +static void uni_player_set_channel_status(struct uniperif *player, + struct snd_pcm_runtime *runtime) +{ + int n; + unsigned int status; + + /* + * Some AVRs and TVs require the channel status to contain a correct + * sampling frequency. If no sample rate is already specified, then + * set one. + */ + spin_lock(&player->lock); + if (runtime && (player->stream_settings.iec958.status[3] + == IEC958_AES3_CON_FS_NOTID)) { + switch (runtime->rate) { + case 22050: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_22050; + break; + case 44100: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_44100; + break; + case 88200: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_88200; + break; + case 176400: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_176400; + break; + case 24000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_24000; + break; + case 48000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_48000; + break; + case 96000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_96000; + break; + case 192000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_192000; + break; + case 32000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_32000; + break; + case 768000: + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_768000; + break; + default: + /* Mark as sampling frequency not indicated */ + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_NOTID; + break; + } + } + + /* audio mode + * use audio mode status to select PCM or encoded mode + */ + if (player->stream_settings.iec958.status[0] & IEC958_AES0_NONAUDIO) + player->stream_settings.encoding_mode = + UNIPERIF_IEC958_ENCODING_MODE_ENCODED; + else + player->stream_settings.encoding_mode = + UNIPERIF_IEC958_ENCODING_MODE_PCM; + + if (player->stream_settings.encoding_mode == + UNIPERIF_IEC958_ENCODING_MODE_PCM) + /* Clear user validity bits */ + SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0); + else + /* Set user validity bits */ + SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 1); + + /* Program the new channel status */ + for (n = 0; n < 6; ++n) { + status = + player->stream_settings.iec958.status[0 + (n * 4)] & 0xf; + status |= + player->stream_settings.iec958.status[1 + (n * 4)] << 8; + status |= + player->stream_settings.iec958.status[2 + (n * 4)] << 16; + status |= + player->stream_settings.iec958.status[3 + (n * 4)] << 24; + SET_UNIPERIF_CHANNEL_STA_REGN(player, n, status); + } + spin_unlock(&player->lock); + + /* Update the channel status */ + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player); + else + SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player); +} + +static int uni_player_prepare_iec958(struct uniperif *player, + struct snd_pcm_runtime *runtime) +{ + if (!runtime) { + dev_err(player->dev, "%s: invalid pointer(s)", __func__); + return -EINVAL; + } + + /* Oversampling must be multiple of 128 as iec958 frame is 32-bits */ + if ((player->clk_div % 128) || + (player->clk_div <= 0)) { + dev_err(player->dev, "%s: invalid clk_div %d", + __func__, player->clk_div); + return -EINVAL; + } + + /* No sample rates below 32kHz are supported for iec958 */ + if (runtime->rate < MIN_IEC958_SAMPLE_RATE) { + dev_err(player->dev, "Invalid rate (%d)", runtime->rate); + return -EINVAL; + } + + switch (runtime->format) { + case SNDRV_PCM_FORMAT_S16_LE: + /* 16/16 memory format */ + SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player); + /* 16-bits per sub-frame */ + SET_UNIPERIF_I2S_FMT_NBIT_32(player); + /* Set 16-bit sample precision */ + SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player); + break; + case SNDRV_PCM_FORMAT_S32_LE: + /* 16/0 memory format */ + SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player); + /* 32-bits per sub-frame */ + SET_UNIPERIF_I2S_FMT_NBIT_32(player); + /* Set 24-bit sample precision */ + SET_UNIPERIF_I2S_FMT_DATA_SIZE_24(player); + break; + default: + dev_err(player->dev, "format not supported"); + return -EINVAL; + } + + /* Set parity to be calculated by the hardware */ + SET_UNIPERIF_CONFIG_PARITY_CNTR_BY_HW(player); + + /* Set channel status bits to be inserted by the hardware */ + SET_UNIPERIF_CONFIG_CHANNEL_STA_CNTR_BY_HW(player); + + /* Set user data bits to be inserted by the hardware */ + SET_UNIPERIF_CONFIG_USER_DAT_CNTR_BY_HW(player); + + /* Set validity bits to be inserted by the hardware */ + SET_UNIPERIF_CONFIG_VALIDITY_DAT_CNTR_BY_HW(player); + + /* Set full software control to disabled */ + SET_UNIPERIF_CONFIG_SPDIF_SW_CTRL_DISABLE(player); + + SET_UNIPERIF_CTRL_ZERO_STUFF_HW(player); + + /* Update the channel status */ + uni_player_set_channel_status(player, runtime); + + /* Clear the user validity user bits */ + SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0); + + /* Disable one-bit audio mode */ + SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player); + + /* Enable consecutive frames repetition of Z preamble (not for HBRA) */ + SET_UNIPERIF_CONFIG_REPEAT_CHL_STS_ENABLE(player); + + /* Change to SUF0_SUBF1 and left/right channels swap! */ + SET_UNIPERIF_CONFIG_SUBFRAME_SEL_SUBF1_SUBF0(player); + + /* Set lr clock polarity and i2s mode using platform configuration */ + /* Set data output on rising edge */ + SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(player); + + /* Set data aligned to left with respect to left-right clock polarity */ + SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player); + + /* Set data output as MSB first */ + SET_UNIPERIF_I2S_FMT_ORDER_MSB(player); + + /* Set the number of channels (maximum supported by spdif is 2) */ + if (UNIPERIF_PLAYER_TYPE_IS_SPDIF(player) && + (runtime->channels != 2)) { + dev_err(player->dev, "invalid nb of channels"); + return -EINVAL; + } + + SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2); + + /* Set rounding to off */ + SET_UNIPERIF_CTRL_ROUNDING_OFF(player); + + /* Set clock divisor */ + SET_UNIPERIF_CTRL_DIVIDER(player, + player->clk_div / 128); + + /* Set the spdif latency to not wait before starting player */ + SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); + + /* + * Ensure iec958 formatting is off. It will be enabled in function + * uni_player_start() at the same time as the operation + * mode is set to work around a silicon issue. + */ + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player); + else + SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player); + + return 0; +} + +static int uni_player_prepare_pcm(struct uniperif *player, + struct snd_pcm_runtime *runtime) +{ + int output_frame_size, slot_width; + + if (!runtime) { + dev_err(player->dev, "%s: invalid pointer(s)", __func__); + return -EINVAL; + } + + /* force slot width to 32 in I2S mode (HW constraint) */ + if ((player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) == + SND_SOC_DAIFMT_I2S) { + slot_width = 32; + } else { + switch (runtime->format) { + case SNDRV_PCM_FORMAT_S16_LE: + slot_width = 16; + break; + default: + slot_width = 32; + break; + } + } + output_frame_size = slot_width * runtime->channels; + + if (player->clk_div <= 0) { + dev_err(player->dev, "%s: invalid clk_div", __func__); + return -EINVAL; + } + + /* For 32 bits subframe clk_div must be a multiple of 128, + * for 16 bits - of 64 */ + if ((slot_width == 32) && (player->clk_div % 128)) { + dev_err(player->dev, "%s: invalid clk_div", __func__); + return -EINVAL; + } + + if ((slot_width == 16) && (player->clk_div % 64)) { + dev_err(player->dev, "%s: invalid clk_div", __func__); + return -EINVAL; + } + + /* Number of bits per subframe (which is one channel sample) + * on output - Transfer 16 or 32 bits from FIFO + */ + switch (slot_width) { + case 32: + SET_UNIPERIF_I2S_FMT_NBIT_32(player); + SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(player); + break; + case 16: + SET_UNIPERIF_I2S_FMT_NBIT_16(player); + SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player); + break; + default: + dev_err(player->dev, "subframe format not supported"); + return -EINVAL; + } + + /* Configure data memory format */ + switch (runtime->format) { + case SNDRV_PCM_FORMAT_S16_LE: + /* One data word contains two samples */ + SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player); + break; + + case SNDRV_PCM_FORMAT_S32_LE: + /* Actually "16 bits/0 bits" means "32/28/24/20/18/16 bits + * on the left than zeros (if less than 32 bytes)"... ;-) */ + SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player); + break; + + default: + dev_err(player->dev, "format not supported"); + return -EINVAL; + } + + /* Set rounding to off */ + SET_UNIPERIF_CTRL_ROUNDING_OFF(player); + + /* Set clock divisor */ + SET_UNIPERIF_CTRL_DIVIDER(player, + player->clk_div / (2 * output_frame_size)); + + /* Number of channels... */ + + if ((runtime->channels % 2) || (runtime->channels < 2) || + (runtime->channels > 10)) { + dev_err(player->dev, "%s: invalid nb of channels", __func__); + return -EINVAL; + } + + SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2); + + /* Set 1-bit audio format to disabled */ + SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player); + + SET_UNIPERIF_I2S_FMT_ORDER_MSB(player); + SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player); + + /* No iec958 formatting as outputting to DAC */ + SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player); + + return 0; +} + +/* + * ALSA uniperipheral iec958 controls + */ +static int uni_player_ctl_iec958_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; + uinfo->count = 1; + + return 0; +} + +static int uni_player_ctl_iec958_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uniperif *player = snd_kcontrol_chip(kcontrol); + struct snd_aes_iec958 *iec958 = &player->stream_settings.iec958; + + spin_lock(&player->lock); + ucontrol->value.iec958.status[0] = iec958->status[0]; + ucontrol->value.iec958.status[1] = iec958->status[1]; + ucontrol->value.iec958.status[2] = iec958->status[2]; + ucontrol->value.iec958.status[3] = iec958->status[3]; + spin_unlock(&player->lock); + return 0; +} + +static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uniperif *player = snd_kcontrol_chip(kcontrol); + struct snd_aes_iec958 *iec958 = &player->stream_settings.iec958; + + spin_lock(&player->lock); + iec958->status[0] = ucontrol->value.iec958.status[0]; + iec958->status[1] = ucontrol->value.iec958.status[1]; + iec958->status[2] = ucontrol->value.iec958.status[2]; + iec958->status[3] = ucontrol->value.iec958.status[3]; + spin_unlock(&player->lock); + + uni_player_set_channel_status(player, NULL); + + return 0; +} + +static struct snd_kcontrol_new uni_player_iec958_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), + .info = uni_player_ctl_iec958_info, + .get = uni_player_ctl_iec958_get, + .put = uni_player_ctl_iec958_put, +}; + +/* + * uniperif rate adjustement control + */ +static int snd_sti_clk_adjustment_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = UNIPERIF_PLAYER_CLK_ADJ_MIN; + uinfo->value.integer.max = UNIPERIF_PLAYER_CLK_ADJ_MAX; + uinfo->value.integer.step = UNIPERIF_PLAYER_CLK_ADJ_STEP; + + return 0; +} + +static int snd_sti_clk_adjustment_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uniperif *player = snd_kcontrol_chip(kcontrol); + + spin_lock(&player->lock); + ucontrol->value.integer.value[0] = player->clk_adj; + spin_unlock(&player->lock); + + return 0; +} + +static int snd_sti_clk_adjustment_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct uniperif *player = snd_kcontrol_chip(kcontrol); + int ret = 0; + + if ((ucontrol->value.integer.value[0] < UNIPERIF_PLAYER_CLK_ADJ_MIN) || + (ucontrol->value.integer.value[0] > UNIPERIF_PLAYER_CLK_ADJ_MAX)) + return -EINVAL; + + spin_lock(&player->lock); + player->clk_adj = ucontrol->value.integer.value[0]; + + if (player->rate) + ret = uni_player_clk_set_rate(player, + player->rate * player->clk_div); + spin_unlock(&player->lock); + + return ret; +} + +static struct snd_kcontrol_new uni_player_clk_adj_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "PCM Playback Oversampling Freq. Adjustment", + .info = snd_sti_clk_adjustment_info, + .get = snd_sti_clk_adjustment_get, + .put = snd_sti_clk_adjustment_put, +}; + +static struct snd_kcontrol_new *snd_sti_pcm_ctl[] = { + &uni_player_clk_adj_ctl, +}; + +static struct snd_kcontrol_new *snd_sti_iec_ctl[] = { + &uni_player_iec958_ctl, + &uni_player_clk_adj_ctl, +}; + +static int uni_player_open(struct uniperif *player) +{ + /* cancel pending delayed work (suspend) */ + if (!cancel_delayed_work(&player->delayed_work)) + flush_workqueue(uni_player_wq); + + spin_lock(&player->lock); + player->rate = 0; + player->clk_adj = 0; + spin_unlock(&player->lock); + + return 0; +} + +static int uni_player_prepare(struct uniperif *player, + struct snd_pcm_runtime *runtime) +{ + int transfer_size, trigger_limit; + int ret; + + /* The player should be stopped or in standby */ + if ((player->state != UNIPERIF_STATE_STOPPED) && + (player->state != UNIPERIF_STATE_STANDBY)) { + dev_err(player->dev, "%s: invalid player state %d", __func__, + player->state); + return -EINVAL; + } + + /* Calculate transfer size (in fifo cells and bytes) for frame count */ + transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES; + + /* Calculate number of empty cells available before asserting DREQ */ + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + trigger_limit = UNIPERIF_FIFO_SIZE - transfer_size; + else + /* Since SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0 + * FDMA_TRIGGER_LIMIT also controls when the state switches + * from OFF or STANDBY to AUDIO DATA.*/ + trigger_limit = transfer_size; + + /* Trigger limit must be an even number */ + if ((!trigger_limit % 2) || (trigger_limit != 1 && transfer_size % 2) || + (trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(player))) { + dev_err(player->dev, "invalid trigger limit %d", trigger_limit); + return -EINVAL; + } + + SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(player, trigger_limit); + + /* Uniperipheral setup is depend on player type */ + switch (player->info->player_type) { + case SND_ST_UNIPERIF_PLAYER_TYPE_HDMI: + ret = uni_player_prepare_iec958(player, runtime); + break; + case SND_ST_UNIPERIF_PLAYER_TYPE_PCM: + ret = uni_player_prepare_pcm(player, runtime); + break; + case SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF: + ret = uni_player_prepare_iec958(player, runtime); + break; + default: + dev_err(player->dev, "invalid player type"); + return -EINVAL; + } + + if (ret) + return ret; + + switch (player->daifmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_IB_IF: + case SND_SOC_DAIFMT_NB_IF: + SET_UNIPERIF_I2S_FMT_LR_POL_HIG(player); + break; + default: + SET_UNIPERIF_I2S_FMT_LR_POL_LOW(player); + } + + switch (player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player); + SET_UNIPERIF_I2S_FMT_PADDING_I2S_MODE(player); + break; + case SND_SOC_DAIFMT_LEFT_J: + SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player); + SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player); + break; + case SND_SOC_DAIFMT_RIGHT_J: + SET_UNIPERIF_I2S_FMT_ALIGN_RIGHT(player); + SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player); + break; + default: + dev_err(player->dev, "format not supported"); + return -EINVAL; + } + + /* Set the interrupt mask */ + SET_UNIPERIF_ITM_BSET_DMA_ERROR(player); + SET_UNIPERIF_ITM_BSET_FIFO_ERROR(player); + + /* Enable underflow recovery interrupts */ + if (player->info->underflow_enabled) { + SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(player); + SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(player); + } + + /* Set clock rate */ + spin_lock(&player->lock); + ret = uni_player_clk_set_rate(player, + runtime->rate * player->clk_div); + if (ret) { + dev_err(player->dev, "Failed to set clock rate"); + spin_unlock(&player->lock); + return ret; + } + + player->rate = runtime->rate; + spin_unlock(&player->lock); + + if (player->state == UNIPERIF_STATE_STANDBY) { + /* We are moving from standby to started + *Synchronise transition out of standby + */ + if ((UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) && + (player->stream_settings.encoding_mode == + UNIPERIF_IEC958_ENCODING_MODE_ENCODED)) + SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_ON(player); + else + SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_OFF( + player); + return 0; + } + + SET_UNIPERIF_I2S_FMT_NO_OF_SAMPLES_TO_READ(player, 0); + + /* Reset uniperipheral player */ + SET_UNIPERIF_SOFT_RST_SOFT_RST(player); + + return reset_player(player); +} + +static int uni_player_start(struct uniperif *player) +{ + int ret; + + /* The player should be stopped ot in standby */ + if ((player->state != UNIPERIF_STATE_STOPPED) && + (player->state != UNIPERIF_STATE_STANDBY)) { + dev_err(player->dev, "%s: invalid player state", __func__); + return -EINVAL; + } + + /* pinctrl: switch pinstate to default */ + ret = pinctrl_pm_select_default_state(player->dev); + if (ret) { + dev_err(player->dev, + "%s: failed to select default pinctrl state", + __func__); + return ret; + } + + /* Check if we are moving from standby state to started */ + if (player->state == UNIPERIF_STATE_STANDBY) { + /* Set the player to audio/pcm data mode */ + SET_UNIPERIF_CTRL_OPERATION_AUDIO_DATA(player); + + /* Clear any pending interrupts */ + SET_UNIPERIF_ITS_BCLR(player, GET_UNIPERIF_ITS(player)); + + /* Enable player interrupts */ + enable_irq(player->irq); + + /* Update state to started and return */ + player->state = UNIPERIF_STATE_STARTED; + return 0; + } + + ret = clk_prepare_enable(player->clk); + if (ret) { + dev_err(player->dev, "%s: Failed to enable clock", __func__); + return ret; + } + + /* Clear any pending interrupts */ + SET_UNIPERIF_ITS_BCLR(player, GET_UNIPERIF_ITS(player)); + + /* Enable player interrupts */ + enable_irq(player->irq); + + /* Reset uniperipheral player */ + SET_UNIPERIF_SOFT_RST_SOFT_RST(player); + + ret = reset_player(player); + if (ret < 0) + return ret; + + /* + * Does not use IEC61937 features of the uniperipheral hardware. + * Instead it performs IEC61937 in software and inserts it directly + * into the audio data stream. As such, when encoded mode is selected, + * linear pcm mode is still used, but with the differences of the + * channel status bits set for encoded mode and the validity bits set. + */ + + SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(player); + + /* + * If iec958 formatting is required for hdmi or spdif, then it must be + * enabled after the operation mode is set. If set prior to this, it + * will not take affect and hang the player. + */ + + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) + SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player); + + /* Force channel status update (no update if clk disable) */ + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) + SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player); + else + SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player); + + /* Update state to started */ + player->state = UNIPERIF_STATE_STARTED; + + return 0; +} + +static int uni_player_stop(struct uniperif *player) +{ + int ret; + + /* The player should not be in stopped state */ + if (player->state == UNIPERIF_STATE_STOPPED) { + dev_err(player->dev, "%s: invalid player state", __func__); + return -EINVAL; + } + + /* Turn the player off */ + SET_UNIPERIF_CTRL_OPERATION_OFF(player); + + /* Soft reset the player */ + SET_UNIPERIF_SOFT_RST_SOFT_RST(player); + + ret = reset_player(player); + if (ret < 0) + return ret; + + if (player->state != UNIPERIF_STATE_STANDBY) { + /* Disable interrupts */ + SET_UNIPERIF_ITM_BCLR(player, GET_UNIPERIF_ITM(player)); + disable_irq_nosync(player->irq); + } + + /* Disable clock */ + clk_disable_unprepare(player->clk); + + /* Update state to stopped and return */ + player->state = UNIPERIF_STATE_STOPPED; + + /* pinctrl: switch pinstate to sleep */ + ret = pinctrl_pm_select_sleep_state(player->dev); + if (ret) { + dev_err(player->dev, + "%s: failed to select sleep pinctrl state", + __func__); + return ret; + } + + return 0; +} + +static int uni_player_standby(struct uniperif *player) +{ + /* Check if we should enable standby mode */ + if ((player->state == UNIPERIF_STATE_STARTED) && + (player->info->standby_enabled == 1)) { + /* Disable interrupts */ + SET_UNIPERIF_ITM_BCLR(player, GET_UNIPERIF_ITM(player)); + disable_irq_nosync(player->irq); + + /* Set standby mode */ + SET_UNIPERIF_CTRL_OPERATION_STANDBY(player); + + /* Update state to standby and return */ + player->state = UNIPERIF_STATE_STANDBY; + return 0; + } + + return uni_player_stop(player); +} + +static int uni_player_suspend(struct uniperif *player) +{ + /* The player should be in stopped or standby state */ + if ((player->state != UNIPERIF_STATE_STOPPED) && + (player->state != UNIPERIF_STATE_STANDBY)) { + dev_err(player->dev, "%s: invalid player state( %d)", + __func__, (int)player->state); + return -EBUSY; + } + if (player->state == UNIPERIF_STATE_STANDBY) + return uni_player_stop(player); + + return 0; +} + +static int uni_player_resume(struct uniperif *player) +{ + int ret; + + /* select the frequency synthesizer clock */ + if (player->clk_sel) { + ret = regmap_field_write(player->clk_sel, 1); + if (ret) { + dev_err(player->dev, + "%s: Failed to select freq synth clock", + __func__); + return ret; + } + } + + /* cancel pending delayed work (suspend) */ + if (!cancel_delayed_work(&player->delayed_work)) + flush_workqueue(uni_player_wq); + + SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player); + SET_UNIPERIF_CTRL_ROUNDING_OFF(player); + SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); + SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player); + + return 0; +} + +static int uni_player_trigger(struct uniperif *player, int cmd) +{ + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + return uni_player_start(player); + case SNDRV_PCM_TRIGGER_STOP: + return uni_player_standby(player); + case SNDRV_PCM_TRIGGER_SUSPEND: + return uni_player_suspend(player); + case SNDRV_PCM_TRIGGER_RESUME: + return uni_player_resume(player); + default: + return -EINVAL; + } +} + +static void uni_player_close(struct uniperif *player) +{ + if (player->state == UNIPERIF_STATE_STANDBY) { + /* Keep uni player in standby and trigger delayed suspend */ + if (player->info->suspend_delay) + queue_delayed_work(uni_player_wq, + &player->delayed_work, + msecs_to_jiffies(player->info->suspend_delay)); + return; + } + + if (player->state != UNIPERIF_STATE_STOPPED) { + /* Stop the player */ + uni_player_stop(player); + } +} + +/* + * Platform driver routines + */ + +static int uni_player_parse_dt_clk_glue(struct platform_device *pdev, + struct uniperif *player) +{ + int bit_offset; + struct device_node *node = pdev->dev.of_node; + struct regmap *regmap; + + bit_offset = SYS_CFG_AUDI0_GLUE_PCM_CLKX + player->info->uni_num; + + regmap = syscon_regmap_lookup_by_phandle(node, "st,syscfg"); + + if (regmap) { + struct reg_field regfield = + REG_FIELD(SYS_CFG_AUDIO_GLUE, bit_offset, bit_offset); + + player->clk_sel = regmap_field_alloc(regmap, regfield); + } else { + dev_err(&pdev->dev, "sti-audio-clk-glue syscf not found\n"); + return -EINVAL; + } + + return 0; +} + +static int uni_player_parse_dt(struct platform_device *pdev, + struct device_node *pnode, + struct uniperif *player) +{ + struct uniperif_info *info; + struct device *dev = &pdev->dev; + const char *mode; + + /* Allocate memory for the info structure */ + info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + if (!pnode) { + dev_err(dev, "%s: invalid pnode", __func__); + return -EINVAL; + } + + of_property_read_u32(pnode, "version", &info->ver); + + of_property_read_u32(pnode, "uniperiph-id", &info->uni_num); + + /* Read the device mode property */ + of_property_read_string(pnode, "mode", &mode); + + if (strcasecmp(mode, "hdmi") == 0) + info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_HDMI; + else if (strcasecmp(mode, "pcm") == 0) + info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_PCM; + else if (strcasecmp(mode, "spdif") == 0) + info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF; + else + info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_NONE; + + /* Read the device features properties */ + of_property_read_u32(pnode, "underflow", &info->underflow_enabled); + of_property_read_u32(pnode, "standby", &info->standby_enabled); + + /* Save the info structure */ + player->info = info; + + /* get the PCM_CLK_SEL bit from audio-glue-ctrl SoC register */ + if (uni_player_parse_dt_clk_glue(pdev, player)) + return -EINVAL; + + of_property_read_u32(pnode, "auto-suspend-delay", + &info->suspend_delay); + if (info->suspend_delay) + if (info->suspend_delay < MIN_AUTOSUPEND_DELAY_MS) { + info->suspend_delay = MIN_AUTOSUPEND_DELAY_MS; + dev_info(dev, + "%s: auto-suspend-delay set to min: %d ms", + __func__, info->suspend_delay); + } + + return 0; +} + +const struct uniperif_ops uni_player_ops = { + .open = uni_player_open, + .close = uni_player_close, + .prepare = uni_player_prepare, + .trigger = uni_player_trigger +}; + +int uni_player_init(struct platform_device *pdev, struct device_node *node, + struct uniperif **uni_player, int idx) +{ + struct uniperif *player; + int ret = 0; + + player = devm_kzalloc(&pdev->dev, sizeof(*player), GFP_KERNEL); + + if (!player) + return -ENOMEM; + + player->dev = &pdev->dev; + player->state = UNIPERIF_STATE_STOPPED; + player->hw = &uni_player_pcm_hw; + player->ops = &uni_player_ops; + + ret = uni_player_parse_dt(pdev, node, player); + + if (ret < 0) { + dev_err(player->dev, "Failed to parse DeviceTree"); + return ret; + } + + /* get uniperif resource */ + player->clk = of_clk_get(pdev->dev.of_node, idx); + + if (IS_ERR(player->clk)) { + ret = (int)PTR_ERR(player->clk); + dev_err(player->dev, "%s: ERROR: clk_get failed (%d)!\n", + __func__, ret); + return -EINVAL; + } + + /* select the frequency synthesizer clock */ + if (player->clk_sel) { + ret = regmap_field_write(player->clk_sel, 1); + if (ret) { + dev_err(player->dev, + "%s: Failed to select freq synth clock", + __func__); + return ret; + } + } + + if (player->info->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) { + dev_err(player->dev, "Unknown uniperipheral version "); + return -EINVAL; + } + player->ver = player->info->ver; + + /* Check for underflow recovery being enabled */ + if (player->info->underflow_enabled) + /* Underflow recovery is only supported on later ip revisions */ + if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) { + dev_err(player->dev, + "underflow recovery not supported"); + player->info->underflow_enabled = 0; + } + + /* Get resources */ + + player->mem_region = platform_get_resource(pdev, IORESOURCE_MEM, idx); + + if (!player->mem_region) { + dev_err(&pdev->dev, "Failed to get memory resource"); + return -ENODEV; + } + + player->base = devm_ioremap_resource(&pdev->dev, + player->mem_region); + + if (!player->base) { + dev_err(&pdev->dev, "Failed to ioremap memory region"); + return -ENXIO; + } + + player->fifo_phys_address = player->mem_region->start + + UNIPERIF_FIFO_DATA_OFFSET(player); + + player->irq = platform_get_irq(pdev, idx); + + if (player->irq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ resource"); + return -ENXIO; + } + + ret = devm_request_irq(&pdev->dev, player->irq, + uni_player_irq_handler, IRQF_SHARED, + dev_name(&pdev->dev), player); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to request IRQ"); + return -EBUSY; + } + + /* request_irq() enables the interrupt immediately; as it is + * lethal in concurrent audio environment, we want to have + * it disabled for most of the time... + */ + disable_irq(player->irq); + + player->clk_div = DEFAULT_OVERSAMPLING; + + *uni_player = player; + + spin_lock_init(&player->lock); + + /* ensure that disabled by default */ + SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player); + SET_UNIPERIF_CTRL_ROUNDING_OFF(player); + SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player); + SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player); + + if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) { + /* Set default iec958 status bits */ + + /* Consumer, PCM, copyright, 2ch, mode 0 */ + player->stream_settings.iec958.status[0] = 0x00; + /* Broadcast reception category */ + player->stream_settings.iec958.status[1] = + IEC958_AES1_CON_GENERAL; + /* Do not take into account source or channel number */ + player->stream_settings.iec958.status[2] = + IEC958_AES2_CON_SOURCE_UNSPEC; + /* Sampling frequency not indicated */ + player->stream_settings.iec958.status[3] = + IEC958_AES3_CON_FS_NOTID; + /* Max sample word 24-bit, sample word length not indicated */ + player->stream_settings.iec958.status[4] = + IEC958_AES4_CON_MAX_WORDLEN_24 | + IEC958_AES4_CON_WORDLEN_24_20; + + player->num_ctrls = ARRAY_SIZE(snd_sti_iec_ctl); + player->snd_ctrls = snd_sti_iec_ctl[0]; + } else { + player->num_ctrls = ARRAY_SIZE(snd_sti_pcm_ctl); + player->snd_ctrls = snd_sti_pcm_ctl[0]; + } + + uni_player_wq = create_workqueue("uni_player_workqueue"); + if (!uni_player_wq) + return -ENOMEM; + + INIT_DELAYED_WORK(&player->delayed_work, uni_player_work); + + return 0; +} +EXPORT_SYMBOL_GPL(uni_player_init); + +int uni_player_remove(struct platform_device *pdev) +{ + struct uniperif *player = platform_get_drvdata(pdev); + + if (player->clk) + clk_put(player->clk); + + if (uni_player_wq) + destroy_workqueue(uni_player_wq); + + return 0; +} +EXPORT_SYMBOL_GPL(uni_player_remove);