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generic-poky/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-moorestown-aud...

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From 3657fc661cea2b120a7516cb66002fcd3af34e35 Mon Sep 17 00:00:00 2001
From: R, Dharageswari <dharageswari.r@intel.com>
Date: Thu, 29 Apr 2010 20:23:41 +0530
Subject: [PATCH] ADR-Post-Beta-0.05.002.03-3/8-Moorestown Audio Drivers: SST interface modules
This patch adds the SST driver interface module. Interface module is the
one which talks to upper/other layer in the SST Driver
intel_sst_interface.c - implements the MAD driver registration & deregistration
functions. SST driver is also a character driver, so that player/middleware can
communicate with SST driver. All char driver routines like open, close, read,
write and ioctl are implemented here. The ioctl operations are used by
middleware/players to open/close, control and configure astream as well as to
transfer the data.
intel_sst_ioctl.h - exposes the IOCTL definition for players/middleware
as well as the various structure for passing stream parameters
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
new file: include/sound/intel_sst_ioctl.h
new file: sound/pci/sst/intel_sst_interface.c
Patch-mainline: 2.6.35?
---
include/sound/intel_sst_ioctl.h | 390 +++++++
sound/pci/sst/intel_sst_interface.c | 2099 +++++++++++++++++++++++++++++++++++
2 files changed, 2489 insertions(+), 0 deletions(-)
create mode 100644 include/sound/intel_sst_ioctl.h
create mode 100644 sound/pci/sst/intel_sst_interface.c
diff --git a/include/sound/intel_sst_ioctl.h b/include/sound/intel_sst_ioctl.h
new file mode 100644
index 0000000..442b388
--- /dev/null
+++ b/include/sound/intel_sst_ioctl.h
@@ -0,0 +1,390 @@
+#ifndef __INTEL_SST_IOCTL_H__
+#define __INTEL_SST_IOCTL_H__
+/*
+ * intel_sst_ipc.h - Intel SST Driver for audio engine
+ *
+ * Copyright (C) 2008-10 Intel Corporation
+ * Authors: Vinod Koul <vinod.koul@intel.com>
+ * Harsha Priya <priya.harsha@intel.com>
+ * Dharageswari R <dharageswari.r@intel.com>
+ * KP Jeeja <jeeja.kp@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This file defines all sst ioctls
+ */
+
+/* codec and post/pre processing related info */
+
+enum sst_codec_types {
+/* AUDIO/MUSIC CODEC Type Definitions */
+ SST_CODEC_TYPE_UNKNOWN = 0,
+ SST_CODEC_TYPE_PCM, /* Pass through Audio codec */
+ SST_CODEC_TYPE_MP3,
+ SST_CODEC_TYPE_MP24,
+ SST_CODEC_TYPE_AAC,
+ SST_CODEC_TYPE_AACP,
+ SST_CODEC_TYPE_eAACP,
+ SST_CODEC_TYPE_WMA9,
+ SST_CODEC_TYPE_WMA10,
+ SST_CODEC_TYPE_WMA10P,
+ SST_CODEC_TYPE_RA,
+ SST_CODEC_TYPE_DDAC3,
+ SST_CODEC_TYPE_STEREO_TRUE_HD,
+ SST_CODEC_TYPE_STEREO_HD_PLUS,
+
+ /* VOICE CODEC Type Definitions */
+ SST_CODEC_TYPE_VOICE_PCM = 0x21, /* Pass through voice codec */
+ SST_CODEC_SRC = 0x64,
+ SST_CODEC_MIXER = 0x65,
+ SST_CODEC_DOWN_MIXER = 0x66,
+ SST_CODEC_VOLUME_CONTROL = 0x67,
+ SST_CODEC_OEM1 = 0xC8,
+ SST_CODEC_OEM2 = 0xC9,
+};
+
+enum snd_sst_stream_ops {
+ STREAM_OPS_PLAYBACK = 0, /* Decode */
+ STREAM_OPS_CAPTURE, /* Encode */
+ STREAM_OPS_PLAYBACK_DRM, /* Play Audio/Voice */
+ STREAM_OPS_PLAYBACK_ALERT, /* Play Audio/Voice */
+ STREAM_OPS_CAPTURE_VOICE_CALL, /* CSV Voice recording */
+};
+
+enum stream_type {
+ STREAM_TYPE_MUSIC = 1,
+ STREAM_TYPE_VOICE
+};
+
+/* Firmware Version info */
+struct snd_sst_fw_version {
+ __u8 build; /* build number*/
+ __u8 minor; /* minor number*/
+ __u8 major; /* major number*/
+ __u8 type; /* build type */
+};
+
+/* Port info structure */
+struct snd_sst_port_info {
+ __u16 port_type;
+ __u16 reserved;
+};
+
+/* Mixer info structure */
+struct snd_sst_mix_info {
+ __u16 max_streams;
+ __u16 reserved;
+};
+
+/* PCM Parameters */
+struct snd_pcm_params {
+ __u16 codec; /* codec type */
+ __u8 num_chan; /* 1=Mono, 2=Stereo */
+ __u8 pcm_wd_sz; /* 16/24 - bit*/
+ __u32 brate; /* Bitrate in bits per second */
+ __u32 sfreq; /* Sampling rate in Hz */
+// __u16 frame_size;
+// __u16 samples_per_frame; /* Frame size num samples per frame */
+ __u32 buffer_size;
+ __u32 period_count; /* period elapsed time count, in samples,*/
+};
+
+/* MP3 Music Parameters Message */
+struct snd_mp3_params {
+ __u16 codec;
+ __u8 num_chan; /* 1=Mono, 2=Stereo */
+ __u8 pcm_wd_sz; /* 16/24 - bit*/
+ __u32 brate; /* Use the hard coded value. */
+ __u32 sfreq; /* Sampling freq eg. 8000, 441000, 48000 */
+ __u8 crc_check; /* crc_check - disable (0) or enable (1) */
+ __u8 op_align; /* op align 0- 16 bit, 1- MSB, 2 LSB*/
+ __u16 reserved; /* Unused */
+};
+
+#define AAC_BIT_STREAM_ADTS 0
+#define AAC_BIT_STREAM_ADIF 1
+#define AAC_BIT_STREAM_RAW 2
+
+/* AAC Music Parameters Message */
+struct snd_aac_params {
+ __u16 codec;
+ __u8 num_chan; /* 1=Mono, 2=Stereo*/
+ __u8 pcm_wd_sz; /* 16/24 - bit*/
+ __u32 brate;
+ __u32 sfreq; /* Sampling freq eg. 8000, 441000, 48000 */
+ __u32 aac_srate; /* Plain AAC decoder operating sample rate */
+ __u8 mpg_id; /* 0=MPEG-2, 1=MPEG-4 */
+ __u8 bs_format; /* input bit stream format adts=0, adif=1, raw=2 */
+ __u8 aac_profile; /* 0=Main Profile, 1=LC profile, 3=SSR profile */
+ __u8 ext_chl; /* No.of external channels */
+ __u8 aot; /* Audio object type. 1=Main , 2=LC , 3=SSR, 4=SBR*/
+ __u8 op_align; /* output alignment 0=16 bit , 1=MSB, 2= LSB align */
+ __u8 brate_type; /* 0=CBR, 1=VBR */
+ __u8 crc_check; /* crc check 0= disable, 1=enable */
+ __s8 bit_stream_format[8]; /* input bit stream format adts/adif/raw */
+ __u8 jstereo; /* Joint stereo Flag */
+ __u8 sbr_present; /* 1 = SBR Present, 0 = SBR absent, for RAW */
+ __u8 downsample; /* 1 = Downsampling ON, 0 = Downsampling OFF */
+ __u8 num_syntc_elems; /* 1- Mono/stereo, 0 - Dual Mono, 0 - for raw */
+ __s8 syntc_id[2]; /* 0 for ID_SCE(Dula Mono), -1 for raw */
+ __s8 syntc_tag[2]; /* raw - -1 and 0 -16 for rest of the streams */
+ __u8 pce_present; /* Flag. 1- present 0 - not present, for RAW */
+ __u8 sbr_type; /* sbr_type: 0-plain aac, 1-aac-v1, 2-aac-v2 */
+ __u8 outchmode; /* 0- mono, 1-stereo, 2-dual mono 3-Parametric stereo */
+ __u8 ps_present;
+
+};
+
+/* WMA Music Parameters Message */
+struct snd_wma_params {
+ __u16 codec;
+ __u8 num_chan; /* 1=Mono, 2=Stereo */
+ __u8 pcm_wd_sz; /* 16/24 - bit*/
+ __u32 brate; /* Use the hard coded value. */
+ __u32 sfreq; /* Sampling freq eg. 8000, 441000, 48000 */
+ __u32 channel_mask; /* Channel Mask */
+ __u16 format_tag; /* Format Tag */
+ __u16 block_align; /* packet size */
+ __u16 wma_encode_opt;/* Encoder option */
+ __u8 op_align; /* op align 0- 16 bit, 1- MSB, 2 LSB */
+ __u8 pcm_src; /* input pcm bit width */
+};
+
+/* Pre processing param structure */
+struct snd_prp_params {
+ __u32 reserved; /* No pre-processing defined yet */
+};
+
+/* Post processing Capability info structure */
+struct snd_sst_postproc_info {
+ __u32 src_min; /* Supported SRC Min sampling freq */
+ __u32 src_max; /* Supported SRC Max sampling freq */
+ __u8 src; /* 0=Not supported, 1=Supported */
+ __u8 bass_boost; /* 0=Not Supported, 1=Supported */
+ __u8 stereo_widening; /* 0=Not Supported, 1=Supported */
+ __u8 volume_control; /* 0=Not Supported, 1=Supported */
+ __s16 min_vol; /* Minimum value of Volume in dB */
+ __s16 max_vol; /* Maximum value of Volume in dB */
+ __u8 mute_control; /* 0=No Mute, 1=Mute */
+ __u8 reserved1;
+ __u16 reserved2;
+};
+
+/* pre processing Capability info structure */
+struct snd_sst_prp_info {
+ __s16 min_vol; /* Minimum value of Volume in dB */
+ __s16 max_vol; /* Maximum value of Volume in dB */
+ __u8 volume_control; /* 0=Not Supported, 1=Supported */
+ __u8 reserved1; /* for 32 bit alignment */
+ __u16 reserved2; /* for 32 bit alignment */
+} __attribute__ ((packed));
+
+/* Firmware capabilities info */
+struct snd_sst_fw_info {
+ struct snd_sst_fw_version fw_version; /* Firmware version */
+ __u8 audio_codecs_supported[8]; /* Codecs supported by FW */
+ __u32 recommend_min_duration; /* Min duration for Lowpower Playback */
+ __u8 max_pcm_streams_supported; /* Max num of PCM streams supported */
+ __u8 max_enc_streams_supported; /* Max number of Encoded streams */
+ __u16 reserved; /* 32 bit alignment*/
+ struct snd_sst_postproc_info pop_info; /* Post processing capability */
+ struct snd_sst_prp_info prp_info; /* pre_processing mod cap info */
+ struct snd_sst_port_info port_info[2]; /* Port info */
+ struct snd_sst_mix_info mix_info; /* Mixer info */
+ __u32 min_input_buf; /* minmum i/p buffer for decode */
+};
+
+/* Add the codec parameter structures for new codecs to be supported */
+#define CODEC_PARAM_STRUCTURES \
+ struct snd_pcm_params pcm_params; \
+ struct snd_mp3_params mp3_params; \
+ struct snd_aac_params aac_params; \
+ struct snd_wma_params wma_params;
+
+/* Pre and Post Processing param structures */
+#define PPP_PARAM_STRUCTURES \
+ struct snd_prp_params prp_params;
+
+/* Codec params struture */
+union snd_sst_codec_params {
+ CODEC_PARAM_STRUCTURES;
+};
+
+/* Pre-processing params struture */
+union snd_sst_ppp_params{
+ PPP_PARAM_STRUCTURES;
+};
+
+struct snd_sst_stream_params {
+ union snd_sst_codec_params uc;
+} __attribute__ ((packed));
+
+struct snd_sst_params {
+ __u32 result;
+ __u32 stream_id;
+ __u8 codec;
+ __u8 ops;
+ __u8 stream_type;
+ struct snd_sst_stream_params sparams;
+};
+
+/* ioctl related stuff here */
+struct snd_sst_pmic_config {
+ __u32 sfreq; /* Sampling rate in Hz */
+ __u16 num_chan; /* Mono =1 or Stereo =2 */
+ __u16 pcm_wd_sz; /* Number of bits per sample */
+} __attribute__ ((packed));
+
+struct snd_sst_get_stream_params {
+ struct snd_sst_params codec_params;
+ struct snd_sst_pmic_config pcm_params;
+};
+
+enum snd_sst_target_type {
+ SND_SST_TARGET_PMIC = 1,
+ SND_SST_TARGET_LPE,
+ SND_SST_TARGET_OTHER,
+};
+
+enum snd_sst_device_type {
+ SND_SST_DEVICE_SSP = 1,
+ SND_SST_DEVICE_PCM,
+ SND_SST_DEVICE_OTHER,
+};
+
+/*enum snd_sst_device_mode {
+ SND_SST_PCM_MODE_I2S = 0,
+ SND_SST_PCM_MODE_PCM1,
+};*/
+enum snd_sst_device_mode {
+
+ SND_SST_DEV_MODE_PCM_MODE1 = 1, /*(1 16-bit word, bit-length frame sync)*/
+ SND_SST_DEV_MODE_PCM_MODE2,
+ SND_SST_DEV_MODE_PCM_MODE3,
+ SND_SST_DEV_MODE_PCM_MODE4_RIGHT_JUSTIFIED,
+ SND_SST_DEV_MODE_PCM_MODE4_LEFT_JUSTIFIED,
+ SND_SST_DEV_MODE_PCM_MODE4_I2S, /*(I2S mode, 16-bit words)*/
+};
+
+enum snd_sst_port_action {
+ SND_SST_PORT_PREPARE = 1,
+ SND_SST_PORT_ACTIVATE,
+};
+
+/* Target selection per device structure */
+struct snd_sst_slot_info {
+ __u8 mix_enable; /* Mixer enable or disable */
+ __u8 device_type;
+ __u8 device_instance; /* 0, 1, 2 */
+ __u8 target_type;
+ __u16 slot[2];
+ __u8 master;
+ __u8 action;
+ __u16 device_mode;
+ struct snd_sst_pmic_config pcm_params;
+} __attribute__ ((packed));
+
+#define SST_MAX_TARGET_DEVICES 3
+/* Target device list structure */
+struct snd_sst_target_device {
+ __u32 device_route;
+ struct snd_sst_slot_info devices[SST_MAX_TARGET_DEVICES];
+} __attribute__ ((packed));
+
+struct snd_sst_driver_info {
+ __u32 version; /* Version of the driver */
+ __u32 active_pcm_streams;
+ __u32 active_enc_streams;
+ __u32 max_pcm_streams;
+ __u32 max_enc_streams;
+ __u32 buf_per_stream;
+};
+
+struct snd_sst_vol {
+ __u32 stream_id;
+ __s32 volume;
+ __u32 ramp_duration;
+ __u32 ramp_type; /* Ramp type, default=0 */
+};
+
+struct snd_sst_mute {
+ __u32 stream_id;
+ __u32 mute;
+};
+
+enum snd_sst_buff_type {
+ SST_BUF_USER = 1,
+ SST_BUF_MMAP,
+ SST_BUF_RAR,
+};
+
+struct snd_sst_mmap_buff_entry {
+ unsigned int offset;
+ unsigned int size;
+};
+
+struct snd_sst_mmap_buffs {
+ unsigned int entries;
+ enum snd_sst_buff_type type;
+ struct snd_sst_mmap_buff_entry *buff;
+};
+
+struct snd_sst_buff_entry {
+ void *buffer;
+ unsigned int size;
+};
+
+struct snd_sst_buffs {
+ unsigned int entries;
+ __u8 type;
+ struct snd_sst_buff_entry *buff_entry;
+};
+
+struct snd_sst_dbufs {
+ unsigned long long input_bytes_consumed;
+ unsigned long long output_bytes_produced;
+ struct snd_sst_buffs *ibufs;
+ struct snd_sst_buffs *obufs;
+};
+
+/*IOCTL defined here */
+/*SST MMF IOCTLS only */
+#define SNDRV_SST_STREAM_SET_PARAMS _IOR('L', 0x00, \
+ struct snd_sst_stream_params *)
+#define SNDRV_SST_STREAM_GET_PARAMS _IOWR('L', 0x01, \
+ struct snd_sst_get_stream_params *)
+#define SNDRV_SST_STREAM_GET_TSTAMP _IOWR('L', 0x02, __u64 *)
+#define SNDRV_SST_STREAM_DECODE _IOWR('L', 0x03, struct snd_sst_dbufs *)
+#define SNDRV_SST_STREAM_BYTES_DECODED _IOWR('L', 0x04, __u64 *)
+#define SNDRV_SST_STREAM_START _IO('A', 0x42)
+#define SNDRV_SST_STREAM_DROP _IO('A', 0x43)
+#define SNDRV_SST_STREAM_DRAIN _IO('A', 0x44)
+#define SNDRV_SST_STREAM_PAUSE _IOW('A', 0x45, int)
+#define SNDRV_SST_STREAM_RESUME _IO('A', 0x47)
+#define SNDRV_SST_MMAP_PLAY _IOW('L', 0x05, struct snd_sst_mmap_buffs *)
+#define SNDRV_SST_MMAP_CAPTURE _IOW('L', 0x06, struct snd_sst_mmap_buffs *)
+/*SST common ioctls */
+#define SNDRV_SST_DRIVER_INFO _IOR('L', 0x10, struct snd_sst_driver_info *)
+#define SNDRV_SST_SET_VOL _IOW('L', 0x11, struct snd_sst_vol *)
+#define SNDRV_SST_GET_VOL _IOW('L', 0x12, struct snd_sst_vol *)
+#define SNDRV_SST_MUTE _IOW('L', 0x13, struct snd_sst_mute *)
+/*AM Ioctly only */
+#define SNDRV_SST_FW_INFO _IOR('L', 0x20, struct snd_sst_fw_info *)
+#define SNDRV_SST_SET_TARGET_DEVICE _IOW('L', 0x21, \
+ struct snd_sst_target_device *)
+
+#endif /* __INTEL_SST_IOCTL_H__ */
diff --git a/sound/pci/sst/intel_sst_interface.c b/sound/pci/sst/intel_sst_interface.c
new file mode 100644
index 0000000..5f84245
--- /dev/null
+++ b/sound/pci/sst/intel_sst_interface.c
@@ -0,0 +1,2099 @@
+/*
+ * intel_sst_interface.c - Intel SST Driver for audio engine
+ *
+ * Copyright (C) 2008-10 Intel Corporation
+ * Authors: Vinod Koul <vinod.koul@intel.com>
+ * Harsha Priya <priya.harsha@intel.com>
+ * Dharageswari R <dharageswari.r@intel.com>
+ * KP Jeeja <jeeja.kp@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * This driver exposes the audio engine functionalities to the ALSA
+ * and middleware.
+ * Upper layer interfaces (MAD driver, MMF) to SST driver
+ */
+
+#include <linux/cdev.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/syscalls.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/fcntl.h>
+#include <linux/uaccess.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/workqueue.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/ioctl.h>
+#include <linux/rar/rar_register.h>
+#include <linux/rar/memrar.h>
+#include <asm/div64.h>
+#include <sound/intel_lpe.h>
+#include <sound/intel_sst_ioctl.h>
+#include "intel_sst_fw_ipc.h"
+#include "intel_sst_common.h"
+
+#define AM_MODULE 1
+#define STREAM_MODULE 0
+
+/**
+* This function is called when the FW needs to be downloaded to SST DSP engine
+*/
+static int sst_download_fw(void)
+{
+ int retval;
+ const struct firmware *fw_sst;
+
+ printk(KERN_DEBUG "SST DBG:SST Downloading FW now...\n");
+ retval = request_firmware(&fw_sst,
+ SST_FW_STD_FILENAME,
+ &sst_drv_ctx->pci->dev);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: req fw failed %d \n", retval);
+ return retval;
+ }
+ sst_drv_ctx->alloc_block[0].sst_id = FW_DWNL_ID;
+ retval = sst_load_fw(fw_sst, NULL);
+ if (retval)
+ goto end_restore;
+
+ sst_drv_ctx->alloc_block[0].ops_block.condition = false;
+ retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[0]);
+ if (retval)
+ printk(KERN_ERR
+ "SST ERR: fw download failed %d \n" , retval);
+end_restore:
+ release_firmware(fw_sst);
+ sst_drv_ctx->alloc_block[0].sst_id = BLOCK_UNINIT;
+ return retval;
+}
+
+/**
+* intel_sst_open - opens a handle to driver
+* @i_node: inode structure
+* @file_ptr:pointer to file
+*
+* This function is called by OS when a user space component
+* tries to get a driver handle. Only one handle at a time
+* will be allowed
+*/
+int intel_sst_open(struct inode *i_node, struct file *file_ptr)
+{
+ dev_t device = i_node->i_rdev;
+ unsigned int retval = 0;
+
+ if (sst_drv_ctx->pmic_state != SND_MAD_INIT_DONE) {
+ printk(KERN_ERR
+ "SST ERR: Sound card not availble \n ");
+ return -EIO;
+ }
+
+ if (sst_drv_ctx->sst_state == SST_UN_INIT) {
+ /* FW is not downloaded */
+ retval = sst_download_fw();
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: FW download failed...abort\n");
+ return -ENODEV;
+ }
+ }
+ if (device == MKDEV(INTEL_SST_MAJOR, 0)) {
+ /* app open */
+ mutex_lock(&sst_drv_ctx->stream_cnt_lock);
+ if (sst_drv_ctx->encoded_cnt < MAX_ENC_STREAM) {
+ struct ioctl_pvt_data *data =
+ kzalloc(sizeof(struct ioctl_pvt_data),
+ GFP_KERNEL);
+ if (!data) {
+ printk(KERN_ERR
+ "SST ERR:error rsrvin data mry\n");
+ mutex_unlock(&sst_drv_ctx->stream_cnt_lock);
+ return -ENOMEM;
+ }
+
+
+ sst_drv_ctx->encoded_cnt++;
+ /*sst_drv_ctx->stream_cnt++;*/
+ mutex_unlock(&sst_drv_ctx->stream_cnt_lock);
+ data->pvt_id = sst_assign_pvt_id(sst_drv_ctx);
+ data->str_id = 0;
+ file_ptr->private_data = (void *)data;
+ printk(KERN_DEBUG "SST DBG:sst id allocated = %d!\n", data->pvt_id);
+ } else
+ retval = -EACCES;
+ } else if (device == MKDEV(INTEL_SST_MAJOR, 1)) {
+ /* audio manager open */
+ mutex_lock(&sst_drv_ctx->stream_cnt_lock);
+ if (sst_drv_ctx->am_cnt < MAX_AM_HANDLES) {
+ sst_drv_ctx->am_cnt++;
+ printk(KERN_DEBUG "SST DBG:AM handle opened...\n");
+ } else
+ retval = -EACCES;
+
+ mutex_unlock(&sst_drv_ctx->stream_cnt_lock);
+ } else
+ retval = -EINVAL;
+ return retval;
+}
+
+void free_stream_context(unsigned int str_id)
+{
+ struct stream_info *stream;
+
+ if (!sst_validate_strid(str_id)) {
+ /* str_id is valid, so stream is alloacted */
+ stream = &sst_drv_ctx->streams[str_id];
+ if (stream->ops == STREAM_OPS_PLAYBACK ||
+ stream->ops == STREAM_OPS_PLAYBACK_DRM) {
+ sst_drv_ctx->pb_streams--;
+ if (sst_drv_ctx->pb_streams == 0 && sst_drv_ctx->cp_streams > 0)
+ sst_drv_ctx->scard_ops->power_down_pmic_pb();
+ } else if (stream->ops == STREAM_OPS_CAPTURE) {
+ sst_drv_ctx->cp_streams--;
+ if (sst_drv_ctx->cp_streams == 0 && sst_drv_ctx->pb_streams > 0)
+ sst_drv_ctx->scard_ops->power_down_pmic_cp();
+ }
+#ifdef CONFIG_MSTWN_POWER_MGMT
+ if(stream->codec == SST_CODEC_TYPE_MP3){
+ sst_drv_ctx->lpaudio_start--;
+ if(!sst_drv_ctx->lpaudio_start) {
+ sst_ospm_send_event(OSPM_EVENT_LPAUDIO_STOP);
+ printk(KERN_DEBUG "SST DBG:Free_stream:lpaudio_start:%d", sst_drv_ctx->lpaudio_start);
+ printk(KERN_DEBUG "SST DBG:Free_stream:Sending OSPM_EVENT_LPAUDIO_STOP...\n");
+ }
+ }else {
+ sst_drv_ctx->audio_start--;
+ if(!sst_drv_ctx->audio_start) {
+ sst_ospm_send_event(OSPM_EVENT_SUBSYS_STOP_PLAY);
+ printk(KERN_DEBUG "SST DBG:Free_stream:audio_start:%d", sst_drv_ctx->audio_start);
+ printk(KERN_DEBUG "SST DBG:Free_stream:Sending OSPM_EVENT_SUBSYS_STOP_PLAY...\n");
+ }
+ }
+#endif
+ if(sst_drv_ctx->pb_streams == 0 &&
+ sst_drv_ctx->cp_streams == 0) {
+ sst_drv_ctx->scard_ops->power_down_pmic();
+ }
+
+ if (sst_free_stream(str_id))
+ sst_clean_stream(&sst_drv_ctx->streams[str_id]);
+ }
+}
+
+/**
+* intel_sst_release - releases a handle to driver
+* @i_node: inode structure
+* @file_ptr: pointer to file
+*
+* This function is called by OS when a user space component
+* tries to release a driver handle.
+*/
+int intel_sst_release(struct inode *i_node, struct file *file_ptr)
+{
+ dev_t device = i_node->i_rdev;
+
+ printk(KERN_DEBUG "SST DBG:Release called \n");
+ if (device == MKDEV(INTEL_SST_MAJOR, 0)) {
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)file_ptr->private_data;
+
+ /* app close */
+ printk(KERN_DEBUG "SST DBG:Closing app handle \n");
+ mutex_lock(&sst_drv_ctx->stream_cnt_lock);
+ sst_drv_ctx->encoded_cnt--;
+ sst_drv_ctx->stream_cnt--;
+ mutex_unlock(&sst_drv_ctx->stream_cnt_lock);
+ free_stream_context(data->str_id);
+ kfree(data);
+ } else if (device == MKDEV(INTEL_SST_MAJOR, 1)) {
+ /* audio manager close */
+ mutex_lock(&sst_drv_ctx->stream_cnt_lock);
+ sst_drv_ctx->am_cnt--;
+ mutex_unlock(&sst_drv_ctx->stream_cnt_lock);
+ printk(KERN_DEBUG "SST DBG:AM handle closed \n");
+ }
+ return 0;
+}
+
+/**
+* intel_sst_mmap - mmaps a kernel buffer to user space for copying data
+* @vma: vm area structure instance
+* @file_ptr: pointer to file
+*
+* This function is called by OS when a user space component
+* tries to get mmap memory from driver
+*/
+int intel_sst_mmap(struct file *file_ptr, struct vm_area_struct *vma)
+{
+ int retval, length;
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)file_ptr->private_data;
+ int str_id = data->str_id;
+ void *mem_area;
+
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ return -EINVAL;
+
+ length = vma->vm_end - vma->vm_start;
+ printk(KERN_DEBUG "SST DBG:called for stream %d length 0x%x\n", str_id, length);
+
+ if (length > sst_drv_ctx->mmap_len)
+ return -ENOMEM;
+ if (!sst_drv_ctx->mmap_mem)
+ return -EIO;
+
+ /* round it up to the page bondary */
+ /*mem_area = (void *)((((unsigned long)sst_drv_ctx->mmap_mem)
+ + PAGE_SIZE - 1) & PAGE_MASK);*/
+ mem_area = (void *) PAGE_ALIGN((unsigned int) sst_drv_ctx->mmap_mem);
+
+ /* map the whole physically contiguous area in one piece */
+ retval = remap_pfn_range(vma,
+ vma->vm_start,
+ virt_to_phys((void *)mem_area) >> PAGE_SHIFT,
+ length,
+ vma->vm_page_prot);
+ if (retval) {
+ sst_drv_ctx->streams[str_id].mmapped = false;
+ printk(KERN_ERR "SST ERR: mapping failed %d ",retval);
+ } else
+ sst_drv_ctx->streams[str_id].mmapped = true;
+
+ printk(KERN_DEBUG "SST DBG:mmap ret 0x%x \n", retval);
+ return retval;
+}
+
+/**
+* intel_sst_mmap_play_capture - sets mmap data buffers to play/capture
+*/
+static int intel_sst_mmap_play_capture(u32 str_id,
+ struct snd_sst_mmap_buffs *mmap_buf)
+{
+ struct sst_stream_bufs *bufs;
+ int retval, i;
+ struct stream_info *stream;
+ struct snd_sst_mmap_buff_entry *buf_entry;
+
+ printk(KERN_DEBUG "SST DBG:called for str_id %d \n", str_id);
+ retval = sst_validate_strid(str_id);
+ if (retval) {
+ printk(KERN_ERR "SST ERR: val +\
+ failed %d ", retval);
+ return -EINVAL;
+ }
+ BUG_ON(!mmap_buf);
+
+ stream = &sst_drv_ctx->streams[str_id];
+ if (stream->mmapped != true) {
+ printk(KERN_ERR "SST ERR: stream not mapped! ");
+ return -EIO;
+ }
+
+ if (stream->status == STREAM_UN_INIT ||
+ stream->status == STREAM_DECODE) {
+ printk(KERN_ERR
+ "SST ERR: BAD REQUEST!, streamstate +\
+ is %d\n", stream->status);
+ return -EBADRQC;
+ }
+ stream->curr_bytes = 0;
+ stream->cumm_bytes = 0;
+
+ printk(KERN_DEBUG "SST DBG:new buffers count %d status %d\n",
+ mmap_buf->entries, stream->status);
+ buf_entry = mmap_buf->buff;
+ for (i = 0; i < mmap_buf->entries; i++) {
+ BUG_ON(!buf_entry);
+ bufs = kzalloc(sizeof(*bufs), GFP_KERNEL);
+ if (!bufs) {
+ printk(KERN_ERR
+ "SST ERR: mem allocation failed \n ");
+ return -ENOMEM;
+ }
+ bufs->size = buf_entry->size;
+ bufs->offset = buf_entry->offset;
+ bufs->addr = sst_drv_ctx->mmap_mem;
+ bufs->in_use = false;
+ buf_entry++;
+ /* locking here */
+ mutex_lock(&stream->lock);
+ list_add_tail(&bufs->node, &stream->bufs);
+ mutex_unlock(&stream->lock);
+ }
+
+ mutex_lock(&stream->lock);
+ stream->data_blk.condition = false;
+ stream->data_blk.ret_code = 0;
+ if (stream->status == STREAM_INIT &&
+ stream->prev != STREAM_UN_INIT &&
+ stream->need_draining != true) {
+ stream->prev = stream->status;
+ stream->status = STREAM_RUNNING;
+ if (stream->ops == STREAM_OPS_PLAYBACK) {
+ printk(KERN_DEBUG "SST DBG:play frames...\n");
+ if (sst_play_frame(str_id) < 0) {
+ printk(KERN_ERR
+ "SST ERR: play frames failed \n");
+ mutex_unlock(&stream->lock);
+ return -EIO;
+ }
+ } else if (stream->ops == STREAM_OPS_CAPTURE) {
+ printk(KERN_DEBUG "SST DBG:capture frames...\n");
+ if (sst_capture_frame(str_id) < 0) {
+ printk(KERN_ERR
+ "SST ERR: capture frames failed \n");
+ mutex_unlock(&stream->lock);
+ return -EIO;
+ }
+ }
+ }
+ mutex_unlock(&stream->lock);
+ /* Block the call for reply */
+ if (!list_empty(&stream->bufs)) {
+ printk(KERN_DEBUG "SST DBG:ioctl waiting...\n");
+ stream->data_blk.on = true;
+ retval = sst_wait_interruptible(sst_drv_ctx,
+ &stream->data_blk);
+ }
+
+ if (retval >= 0)
+ retval = stream->cumm_bytes;
+ printk(KERN_DEBUG "SST DBG:end of play/rec +\
+ ioctl bytes = %d!!\n", retval);
+ return retval;
+}
+
+/**
+* intel_sst_play_capture - sets user data buffers to play/capture
+*/
+static int intel_sst_play_capture(struct stream_info *stream, int str_id)
+{
+ int retval;
+
+ stream->data_blk.ret_code = 0;
+ stream->data_blk.on = true;
+ stream->data_blk.condition = false;
+
+ mutex_lock(&stream->lock);
+ if (stream->status == STREAM_INIT && stream->prev != STREAM_UN_INIT) {
+ /* stream is started */
+ stream->prev = stream->status;
+ stream->status = STREAM_RUNNING;
+ }
+
+ if (stream->status == STREAM_INIT && stream->prev == STREAM_UN_INIT) {
+ /* stream is not started yet */
+ printk(KERN_DEBUG "SST DBG:Stream isnt started yet state %d, prev %d \n",
+ stream->status, stream->prev);
+ } else if ((stream->status == STREAM_RUNNING ||
+ stream->status == STREAM_PAUSED) &&
+ stream->need_draining != true) {
+ /* stream is started */
+ if (stream->ops == STREAM_OPS_PLAYBACK ||
+ stream->ops == STREAM_OPS_PLAYBACK_DRM) {
+ if (sst_play_frame(str_id) < 0) {
+ printk(KERN_ERR
+ "SST ERR: play frames failed \n");
+ mutex_unlock(&stream->lock);
+ return -EIO;
+ }
+ } else if (stream->ops == STREAM_OPS_CAPTURE) {
+ if (sst_capture_frame(str_id) < 0) {
+ printk(KERN_ERR
+ "SST ERR: capture frames failed \n ");
+ mutex_unlock(&stream->lock);
+ return -EIO;
+ }
+ }
+ } else {
+ printk(KERN_ERR
+ "SST ERR: Streamstate %d invalid,prev %d\n",\
+ stream->status, stream->prev);
+ mutex_unlock(&stream->lock);
+ return -EIO;
+ }
+ mutex_unlock(&stream->lock);
+ /* Block the call for reply */
+ printk(KERN_DEBUG "SST DBG:write waiting...\n");
+
+ retval = sst_wait_interruptible(sst_drv_ctx, &stream->data_blk);
+ if (retval) {
+ stream->status = STREAM_INIT;
+ printk(KERN_DEBUG "SST DBG:wait returned error...\n");
+ }
+ printk(KERN_DEBUG "SST DBG:write returning\n");
+ return retval;
+}
+
+/**
+* snd_sst_fill_kernel_list - fills kernel list with buffer addresses for
+* SST DSP driver to process
+*/
+static int snd_sst_fill_kernel_list(struct stream_info *stream,
+ const struct iovec *iovec, unsigned long nr_segs,
+ struct list_head *copy_to_list)
+{
+ struct sst_stream_bufs *stream_bufs;
+ unsigned long index, data_not_copied, mmap_len;
+ unsigned char *bufp;
+ unsigned long size, copied_size;
+ int retval = 0, add_to_list = 0;
+ static int sent_offset;
+ static unsigned long sent_index;
+
+ stream_bufs = kzalloc(sizeof(*stream_bufs), GFP_KERNEL);
+ if (!stream_bufs) {
+ printk(KERN_ERR
+ "SST ERR: memory allocation failed \n ");
+ return -ENOMEM;
+ }
+ stream_bufs->addr = sst_drv_ctx->mmap_mem;
+ if (stream->ops == STREAM_OPS_PLAYBACK_DRM) {
+ for (index = stream->sg_index; index < nr_segs; index++) {
+ __u32 rar_handle;
+ struct sst_stream_bufs *stream_bufs =
+ kzalloc(sizeof(*stream_bufs), GFP_KERNEL);
+
+ stream->sg_index = index;
+ if (!stream_bufs) {
+ printk(KERN_ERR
+ "SST ERR: mry alocation failed \n");
+ return -ENOMEM;
+ }
+ retval = copy_from_user((void *) &rar_handle,
+ iovec[index].iov_base,
+ sizeof(__u32));
+ if (retval != 0) {
+ printk(KERN_ERR
+ "SST ERR: copy from user +\
+ failed\n");
+ return -EIO;
+ }
+ stream_bufs->addr = (char *)rar_handle;
+ printk(KERN_DEBUG "SST DBG:rar handle +\
+ received = 0x%x\n", (__u32)stream_bufs->addr);
+ stream_bufs->in_use = false;
+ stream_bufs->size = iovec[0].iov_len;
+ printk(KERN_DEBUG "size = 0x%x", stream_bufs->size);
+ /* locking here */
+ mutex_lock(&stream->lock);
+ list_add_tail(&stream_bufs->node, &stream->bufs);
+ mutex_unlock(&stream->lock);
+ }
+ stream->sg_index = index;
+ return retval;
+ }
+ mmap_len = sst_drv_ctx->mmap_len;
+ stream_bufs->addr = sst_drv_ctx->mmap_mem;
+ bufp = stream->cur_ptr;
+
+ printk(KERN_DEBUG "SST DBG:mmap_len - %lx\n", mmap_len);
+ copied_size = 0;
+
+ if (!stream->sg_index)
+ sent_index = sent_offset = 0;
+
+ for (index = stream->sg_index; index < nr_segs; index++) {
+ stream->sg_index = index;
+ printk(KERN_DEBUG "SST DBG:index - %lx, cur_ptr - %p\n", index, stream->cur_ptr);
+ printk(KERN_DEBUG "SST DBG:base - %p, size - 0x%x\n", iovec[index].iov_base,
+ iovec[index].iov_len);
+ printk(KERN_DEBUG "SST DBG:bufp - %p\n", bufp);
+ if (!stream->cur_ptr)
+ bufp = iovec[index].iov_base;
+
+ size = ((unsigned long)iovec[index].iov_base
+ + iovec[index].iov_len) - (unsigned long) bufp;
+
+ printk(KERN_DEBUG "SST DBG:size - %lx\n", size);
+ if ((copied_size + size) > mmap_len)
+ size = mmap_len - copied_size;
+
+ printk(KERN_DEBUG "SST DBG:size - %lx\n", size);
+
+ if (stream->ops == STREAM_OPS_PLAYBACK) {
+ printk(KERN_DEBUG "SST DBG:Playback stream copying now....\n");
+ data_not_copied = copy_from_user(
+ (void *)(stream_bufs->addr + copied_size),
+ bufp, size);
+ if (data_not_copied > 0) {
+ /* Clean up the list and return error code */
+ printk(KERN_ERR
+ "SST ERR: cpyfrmusr not coped -%ld", data_not_copied);
+ retval = -EIO;
+ break;
+ }
+ } else if (stream->ops == STREAM_OPS_CAPTURE) {
+ struct snd_sst_user_cap_list *entry =
+ kzalloc(sizeof(*entry), GFP_KERNEL);
+
+ if (!entry) {
+ printk(KERN_ERR
+ "SST ERR: mem allocation failed \n");
+ /* FIXME cleanup prev */
+ return -ENOMEM;
+ }
+ entry->iov_index = index;
+ entry->iov_offset = (unsigned long) bufp -
+ (unsigned long)iovec[index].iov_base;
+ entry->offset = copied_size;
+ entry->size = size;
+ printk(KERN_DEBUG "SST DBG:ENTRY:ioindx %d,iooff %ld,koff %ld,ksz %ld \n",
+ entry->iov_index, entry->iov_offset,
+ entry->offset, entry->size);
+ list_add_tail(&entry->node, copy_to_list);
+ }
+
+ printk(KERN_DEBUG "SST DBG:cur_ptr - %lx\n", (unsigned long) stream->cur_ptr);
+ stream->cur_ptr = bufp + size;
+
+ if (((unsigned long)iovec[index].iov_base
+ + iovec[index].iov_len) < ((unsigned long)iovec[index].iov_base) ) {
+ printk(KERN_DEBUG "SST DBG:Buffer overflows");
+ return -EINVAL;
+ }
+
+ if (((unsigned long)iovec[index].iov_base
+ + iovec[index].iov_len) ==
+ (unsigned long)stream->cur_ptr) {
+ stream->cur_ptr = NULL;
+ stream->sg_index++;
+ }
+
+ copied_size += size;
+ printk(KERN_DEBUG "SST DBG:copied_size - %lx\n", copied_size);
+ if ((copied_size >= mmap_len) ||
+ (stream->sg_index == nr_segs)) {
+ add_to_list = 1;
+ }
+
+ if (add_to_list) {
+ stream_bufs->in_use = false;
+ stream_bufs->size = copied_size;
+ /* locking here */
+ mutex_lock(&stream->lock);
+ list_add_tail(&stream_bufs->node, &stream->bufs);
+ mutex_unlock(&stream->lock);
+ break;
+ }
+ }
+ return retval;
+}
+
+/**
+* snd_sst_copy_userbuf_capture - This function copies the captured data
+* returned from SST DSP engine to the user buffers
+*/
+static int snd_sst_copy_userbuf_capture(struct stream_info *stream,
+ const struct iovec *iovec,
+ struct list_head *copy_to_list)
+{
+ struct snd_sst_user_cap_list *entry, *_entry;
+ struct sst_stream_bufs *kbufs = NULL, *_kbufs;
+ int retval = 0;
+ unsigned long data_not_copied;
+
+ /* copy sent buffers */
+ /* FIXME optimze */
+ printk(KERN_DEBUG "SST DBG:capture stream copying to user now...\n");
+ list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
+ if (kbufs->in_use == true) {
+ /* copy to user */
+ list_for_each_entry_safe(entry, _entry,
+ copy_to_list, node) {
+ printk(KERN_DEBUG "SST DBG:filling now... \n");
+ printk(KERN_DEBUG "SST DBG:iindx %d,ioff %ld,koff %ld,ksz %ld \n",
+ entry->iov_index, entry->iov_offset,
+ entry->offset, entry->size);
+ printk(KERN_DEBUG "SST DBG:Copying at %p size %lx\n",
+ iovec[entry->iov_index].iov_base +
+ entry->iov_offset,
+ entry->size);
+ data_not_copied = copy_to_user((void *)
+ iovec[entry->iov_index].iov_base +
+ entry->iov_offset,
+ kbufs->addr + entry->offset,
+ entry->size);
+ if (data_not_copied > 0) {
+ /* Clean up the list and return error */
+ printk(KERN_ERR
+ "SST ERR: copy to user err -%ld\n ", data_not_copied);
+ retval = -EIO;
+ break;
+ }
+ list_del(&entry->node);
+ kfree(entry);
+ }
+ printk(KERN_DEBUG "SST DBG:coming out of loop\n");
+ }
+ }
+ printk(KERN_DEBUG "SST DBG:end of cap copy\n");
+ return retval;
+}
+
+/*
+ * snd_sst_userbufs_play_cap - constructs the list from user buffers
+ * @iovec: pointer to iovec structure
+ * @nr_segs: number entries in the iovec structure
+ * @str_id: stream id
+ * @stream: pointer to stream_info structure
+ * This function will traverse the user list and copy the data to the kernel
+ * space buffers.
+ */ /* FIXME cleanups in this fn no mem leaks due to link list */
+static int snd_sst_userbufs_play_cap(const struct iovec *iovec,
+ unsigned long nr_segs, unsigned int str_id,
+ struct stream_info *stream)
+{
+ int retval;
+ LIST_HEAD(copy_to_list);
+
+
+ retval = snd_sst_fill_kernel_list(stream, iovec, nr_segs,
+ &copy_to_list);
+
+ retval = intel_sst_play_capture(stream, str_id);
+ if (retval < 0)
+ return retval;
+
+ if (stream->ops == STREAM_OPS_CAPTURE) {
+ retval = snd_sst_copy_userbuf_capture(stream, iovec,
+ &copy_to_list);
+ }
+ return retval;
+}
+
+/**
+* intel_sst_read_write - This function is common function across read/write
+* for user buffers called from system calls
+*/
+static int intel_sst_read_write(unsigned int str_id, char __user *buf,
+ size_t count)
+{
+ int retval;
+ struct stream_info *stream;
+ struct iovec iovec;
+ unsigned long nr_segs;
+
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ return -EINVAL;
+ stream = &sst_drv_ctx->streams[str_id];
+ if (stream->mmapped == true) {
+ printk(KERN_ERR
+ "SST ERR: user write and stream is mapped");
+ return -EIO;
+ }
+ if (!count) {
+ printk(KERN_ERR
+ "SST ERR: args invalid %d", retval);
+ return -EINVAL;
+ }
+ stream->curr_bytes = 0;
+ stream->cumm_bytes = 0;
+ /* copy user buf details */
+ printk(KERN_DEBUG "SST DBG:new buffers %p, copy size %d, status %d\n" ,
+ buf, (int) count, (int) stream->status);
+
+ stream->buf_type = SST_BUF_USER_STATIC;
+ iovec.iov_base = (void *)buf;
+ iovec.iov_len = count;
+ nr_segs = 1;
+
+ do {
+ retval = snd_sst_userbufs_play_cap(&iovec, nr_segs,
+ str_id, stream);
+
+ if (retval < 0)
+ break;
+
+ } while (stream->sg_index < nr_segs);
+
+ stream->sg_index = 0;
+ stream->cur_ptr = NULL;
+ if (retval >= 0)
+ retval = stream->cumm_bytes;
+ printk(KERN_DEBUG "SST DBG:end of play/rec bytes = %d!!\n", retval);
+ return retval;
+}
+
+/*
+ * intel_sst_write - This function is called when user tries to play out data
+ * @file_ptr: pointer to file
+ * @buf: user buffer to be played out
+ * @count: size of tthe buffer
+ * @offset: offset to start from
+ */
+int intel_sst_write(struct file *file_ptr, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)file_ptr->private_data;
+ int str_id = data->str_id;
+ struct stream_info *stream = &sst_drv_ctx->streams[str_id];
+
+ printk(KERN_DEBUG "SST DBG:called for %d\n", str_id);
+ if (stream->status == STREAM_UN_INIT ||
+ stream->status == STREAM_DECODE) {
+ printk(KERN_ERR "SST ERR: BAD REQUEST ");
+ return -EBADRQC;
+ }
+ return intel_sst_read_write(str_id, (char __user *)buf, count);
+}
+
+/*
+ * intel_sst_aio_write - This function is called when user tries to play out
+ * multiple data buffers
+ * @kiocb: pointer to a structure containing file pointer
+ * @iov: list of user buffer to be played out
+ * @nr_segs: number of entries
+ * @offset: offset to start from
+ */
+ssize_t intel_sst_aio_write(struct kiocb *kiocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t offset)
+{
+ int retval;
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)kiocb->ki_filp->private_data;
+ int str_id = data->str_id;
+ struct stream_info *stream;
+
+ printk(KERN_DEBUG "SST DBG:entry - %ld\n", nr_segs);
+
+ if (is_sync_kiocb(kiocb) == false) {
+ printk(KERN_ERR
+ "SST ERR: aio_writ frm userspace is not alowed\n");
+ return -EINVAL;
+ }
+
+ printk(KERN_DEBUG "SST DBG:called for str_id %d \n", str_id);
+ retval = sst_validate_strid(str_id);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: invalid stream id \n ");
+ return -EINVAL;
+ }
+ stream = &sst_drv_ctx->streams[str_id];
+ if (stream->mmapped == true) {
+ printk(KERN_ERR
+ "SST ERR: user write & stream is mapped");
+ return -EIO;
+ }
+ if (stream->status == STREAM_UN_INIT ||
+ stream->status == STREAM_DECODE) {
+ printk(KERN_ERR "SST ERR: BAD REQUEST");
+ return -EBADRQC;
+ }
+ stream->curr_bytes = 0;
+ stream->cumm_bytes = 0;
+ printk(KERN_DEBUG "SST DBG:new segs %ld, offset %d, status %d\n" ,
+ nr_segs, (int) offset, (int) stream->status);
+ stream->buf_type = SST_BUF_USER_STATIC;
+ do {
+ retval = snd_sst_userbufs_play_cap(iov, nr_segs,
+ str_id, stream);
+ if (retval < 0)
+ break;
+
+ } while (stream->sg_index < nr_segs);
+
+ stream->sg_index = 0;
+ stream->cur_ptr = NULL;
+ if (retval >= 0)
+ retval = stream->cumm_bytes;
+ printk(KERN_DEBUG "SST DBG:end of play/rec bytes = %d!!\n", retval);
+ return retval;
+}
+
+/*
+ * intel_sst_read - This function is called when user tries to capture data
+ * @file_ptr: pointer to file
+ * @buf: user buffer to be filled with captured data
+ * @count: size of tthe buffer
+ * @offset: offset to start from
+ */
+int intel_sst_read(struct file *file_ptr, char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)file_ptr->private_data;
+ int str_id = data->str_id;
+ struct stream_info *stream = &sst_drv_ctx->streams[str_id];
+
+ printk(KERN_DEBUG "SST DBG:called for %d\n", str_id);
+ if (stream->status == STREAM_UN_INIT ||
+ stream->status == STREAM_DECODE) {
+ printk(KERN_ERR"SST ERR: BAD REQUEST!\n");
+ return -EBADRQC;
+ }
+ return intel_sst_read_write(str_id, buf, count);
+}
+
+/*
+ * intel_sst_aio_read - This function is called when user tries to capture out
+ * multiple data buffers
+ * @kiocb: pointer to a structure containing file pointer
+ * @iov: list of user buffer to be filled with captured
+ * @nr_segs: number of entries
+ * @offset: offset to start from
+ */
+
+ssize_t intel_sst_aio_read(struct kiocb *kiocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t offset)
+{
+ int retval;
+ struct ioctl_pvt_data *data =
+ (struct ioctl_pvt_data *)kiocb->ki_filp->private_data;
+ int str_id = data->str_id;
+ struct stream_info *stream;
+
+ printk(KERN_DEBUG "SST DBG:entry - %ld\n", nr_segs);
+
+ if (is_sync_kiocb(kiocb) == false) {
+ printk(KERN_DEBUG "SST DBG:aio_read from user space is not allowed\n");
+ return -EINVAL;
+ }
+
+ printk(KERN_DEBUG "SST DBG:called for str_id %d \n", str_id);
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ return -EINVAL;
+ stream = &sst_drv_ctx->streams[str_id];
+ if (stream->mmapped == true) {
+ printk(KERN_ERR
+ "SST ERR: user write stream is mapped!!! ");
+ return -EIO;
+ }
+ if (stream->status == STREAM_UN_INIT ||
+ stream->status == STREAM_DECODE) {
+ printk(KERN_ERR "SST ERR: BAD REQUEST!\n ");
+ return -EBADRQC;
+ }
+ stream->curr_bytes = 0;
+ stream->cumm_bytes = 0;
+
+ printk(KERN_DEBUG "SST DBG:new segs %ld, offset %d, status %d\n" ,
+ nr_segs, (int) offset, (int) stream->status);
+ stream->buf_type = SST_BUF_USER_STATIC;
+ do {
+ retval = snd_sst_userbufs_play_cap(iov, nr_segs,
+ str_id, stream);
+ if (retval < 0)
+ break;
+
+ } while (stream->sg_index < nr_segs);
+
+ stream->sg_index = 0;
+ stream->cur_ptr = NULL;
+ if (retval >= 0)
+ retval = stream->cumm_bytes;
+ printk(KERN_DEBUG "SST DBG:end of play/rec bytes = %d!!\n", retval);
+ return retval;
+}
+
+/*
+ * sst_print_stream_params - prints the stream parameters (debug fn)
+ */
+static void sst_print_stream_params(struct snd_sst_get_stream_params *get_prm)
+{
+ printk(KERN_DEBUG "SST DBG:codec params:result =%d\n",
+ get_prm->codec_params.result);
+ printk(KERN_DEBUG "SST DBG:codec params:stream = %d\n",
+ get_prm->codec_params.stream_id);
+ printk(KERN_DEBUG "SST DBG:codec params:codec = %d\n",
+ get_prm->codec_params.codec);
+ printk(KERN_DEBUG "SST DBG:codec params:ops = %d\n",
+ get_prm->codec_params.ops);
+ printk(KERN_DEBUG "SST DBG:codec params:stream_type= %d\n",
+ get_prm->codec_params.stream_type);
+ printk(KERN_DEBUG "SST DBG:pcmparams:sfreq= %d\n",
+ get_prm->pcm_params.sfreq);
+ printk(KERN_DEBUG "SST DBG:pcmparams:num_chan= %d\n",
+ get_prm->pcm_params.num_chan);
+ printk(KERN_DEBUG "SST DBG:pcmparams:pcm_wd_sz= %d\n",
+ get_prm->pcm_params.pcm_wd_sz);
+ return;
+}
+
+/*
+ * sst_print_fw_info - prints the firmware information (debug fn)
+ */
+static void sst_print_fw_info(struct snd_sst_fw_info *fw_info)
+{
+ printk(KERN_DEBUG "SST DBG:build = %d\n", fw_info->fw_version.build);
+ printk(KERN_DEBUG "SST DBG:minor = %d\n", fw_info->fw_version.minor);
+ printk(KERN_DEBUG "SST DBG:major= %d\n", fw_info->fw_version.major);
+ printk(KERN_DEBUG "SST DBG:max pcm = %d\n", fw_info->max_pcm_streams_supported);
+ printk(KERN_DEBUG "SST DBG:max enc = %d\n", fw_info->max_enc_streams_supported);
+ printk(KERN_DEBUG "SST DBG:min input buf = %d\n", fw_info->min_input_buf);
+ printk(KERN_DEBUG "SST DBG:pop:src_min= %d\n", fw_info->pop_info.src_min);
+ printk(KERN_DEBUG "SST DBG:pop:src_max= %d\n", fw_info->pop_info.src_max);
+ printk(KERN_DEBUG "SST DBG:pop:src= %d\n", fw_info->pop_info.src);
+ printk(KERN_DEBUG "SST DBG:pop:bass_boost= %d\n", fw_info->pop_info.bass_boost);
+ printk(KERN_DEBUG "SST DBG:pop:stereo_widening= %d\n", fw_info->pop_info.stereo_widening);
+ printk(KERN_DEBUG "SST DBG:pop:volume_control= %d\n", fw_info->pop_info.volume_control);
+ printk(KERN_DEBUG "SST DBG:pop:min_vol= %d\n", fw_info->pop_info.min_vol);
+ printk(KERN_DEBUG "SST DBG:pop:max_vol= %d\n", fw_info->pop_info.max_vol);
+ printk(KERN_DEBUG "SST DBG:prp:min_vol= %d\n", fw_info->prp_info.min_vol);
+ printk(KERN_DEBUG "SST DBG:prp:max_vol= %d\n", fw_info->prp_info.max_vol);
+ printk(KERN_DEBUG "SST DBG:prp:volume_control= %d\n", fw_info->prp_info.volume_control);
+ printk(KERN_DEBUG "SST DBG:mix:max streams = %d\n", fw_info->mix_info.max_streams);
+ printk(KERN_DEBUG "SST DBG:port0:port_type = %d\n", fw_info->port_info[0].port_type);
+ printk(KERN_DEBUG "SST DBG:port1:port_type = %d\n", fw_info->port_info[1].port_type);
+ return;
+}
+
+/*
+ * sst_get_stream_allocated - this function gets a stream allocated with
+ * the given params
+ */
+static int sst_get_stream_allocated(struct snd_sst_params *str_param,
+ u32 block, u32 pvt_id)
+{
+ int retval;
+ retval = sst_alloc_stream((char *) &str_param->sparams, str_param->ops,
+ str_param->codec, pvt_id);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: sst_alloc_stream failed %d \n", retval);
+ return retval;
+ }
+ /* Block the call for reply */
+ retval = sst_wait_timeout(sst_drv_ctx,
+ &sst_drv_ctx->alloc_block[block]);
+
+ return retval;
+}
+
+/*
+ * set_port_params - this function sets the port parameters at Sound card end
+ */
+static void set_port_params(struct snd_sst_params *str_param,
+ enum snd_sst_stream_ops ops)
+{
+ /*int sfreq = str_param->sparams.uc.pcm_params.sfreq;
+ int word_size = str_param->sparams.uc.pcm_params.pcm_wd_sz;
+
+ printk(KERN_DEBUG "SST DBG:sampling frequency = %d wd_size = %d \n", sfreq, word_size);
+
+ if (ops == STREAM_OPS_PLAYBACK ||
+ ops == STREAM_OPS_PLAYBACK_DRM) {
+ printk(KERN_DEBUG "SST DBG:Setting playback path and port settings...\n");
+ sst_drv_ctx->scard_ops.set_pcm_audio_params(sfreq,
+ word_size);
+ } else if (ops == STREAM_OPS_CAPTURE) {
+ printk(KERN_DEBUG "SST DBG:Setting capture path...\n");
+ sst_drv_ctx->scard_ops->set_pcm_audio_params(sfreq, word_size);
+ }*/
+ return;
+}
+
+/*
+ * sst_get_sfreq - this function returns the frequency of the stream
+ */
+static int sst_get_sfreq(struct snd_sst_params *str_param)
+{
+ switch (str_param->codec) {
+ case SST_CODEC_TYPE_PCM:
+ return str_param->sparams.uc.pcm_params.sfreq;
+ case SST_CODEC_TYPE_MP3:
+ return str_param->sparams.uc.mp3_params.sfreq;
+ case SST_CODEC_TYPE_AAC:
+ return str_param->sparams.uc.aac_params.sfreq;;
+ case SST_CODEC_TYPE_WMA9:
+ return str_param->sparams.uc.wma_params.sfreq;;
+ default:
+ return 0;
+ }
+}
+
+/*
+ * sst_stalled - this function checks if the lpe is in stalled state
+ */
+int sst_stalled(void)
+{
+ int retry = 1000;
+ int retval = -1;
+
+ while(retry) {
+ if ( !sst_drv_ctx->lpe_stalled )
+ return 0;
+ //wait for time and re-check
+ mdelay(1);
+
+ retry--;
+ }
+
+ printk(KERN_DEBUG "SST DBG:LPE is in Stalled State\n");
+ return retval;
+}
+/*
+ * sst_get_stream - this function prepares for stream allocation
+ */
+static int sst_get_stream(struct snd_sst_params *str_param, u32 pvt_id)
+{
+ int i, retval;
+ struct stream_info *str_info;
+
+ /* stream is not allocated, we are allocating */
+ i = sst_get_block_stream(sst_drv_ctx);
+ printk(KERN_DEBUG "SST DBG:alloc block allocated = %d\n", i);
+ if (i < 0)
+ return -ENOMEM;
+ sst_drv_ctx->alloc_block[i].sst_id = pvt_id;
+
+ retval = sst_get_stream_allocated(str_param, i, pvt_id);
+ if (retval == -(SST_LIB_ERR_LIB_DNLD_REQUIRED)) {
+ /* codec download is required */
+ struct snd_sst_alloc_response *response =
+ sst_drv_ctx->alloc_block[i].ops_block.data;
+ printk(KERN_DEBUG "SST DBG:Codec is required.... trying that\n");
+ retval = sst_load_library(&response->lib_dnld,
+ str_param->ops, pvt_id);
+ kfree(response);
+
+ if (!retval) {
+ printk(KERN_DEBUG "SST DBG:codec was downloaded sucesfully \n");
+ printk(KERN_DEBUG "SST DBG:try alloac again\n");
+ sst_drv_ctx->alloc_block[i].ops_block.condition = false;
+
+ retval = sst_get_stream_allocated(str_param, i, pvt_id);
+
+ if (retval <= 0)
+ goto err;
+ set_port_params(str_param, str_param->ops);
+
+ printk(KERN_DEBUG "SST DBG:Allocation done stream id %d \n", retval);
+ } else {
+ printk(KERN_DEBUG "SST DBG:codec download failed \n");
+ retval = -EIO;
+ goto err;
+ }
+ } else if (retval <= 0)
+ goto err;
+ else
+ set_port_params(str_param, str_param->ops);
+
+ /* store sampling freq */
+ str_info = &sst_drv_ctx->streams[retval];
+ str_info->sfreq = sst_get_sfreq(str_param);
+
+ /* power on the analog, if reqd */
+ if (str_param->ops == STREAM_OPS_PLAYBACK ||
+ str_param->ops == STREAM_OPS_PLAYBACK_DRM) {
+
+ sst_drv_ctx->scard_ops->power_up_pmic_pb(
+ sst_drv_ctx->pmic_port_instance);
+ /*Only if the playback is MP3 - Send a message*/
+#ifdef CONFIG_MSTWN_POWER_MGMT
+ if(str_info->codec == SST_CODEC_TYPE_MP3) {
+ sst_ospm_send_event(OSPM_EVENT_LPAUDIO_START);
+ sst_drv_ctx->lpaudio_start++;
+ printk(KERN_DEBUG "SST DBG:lpaudio_start:%d", sst_drv_ctx->lpaudio_start);
+ printk(KERN_DEBUG "SST DBG:Sending OSPM_EVENT_LPAUDIO_START...\n");
+ }else {/*Only if the playback is non - MP3- Send a messageif not sent already*/
+ if(sst_drv_ctx->audio_start == 0) {
+ sst_ospm_send_event(OSPM_EVENT_SUBSYS_START_PLAY);
+ sst_drv_ctx->audio_start++;
+ printk(KERN_DEBUG "SST DBG:audio_start:%d", sst_drv_ctx->audio_start);
+ printk(KERN_DEBUG "SST DBG:Sending OSPM_EVENT_SUBSYS_START_PLAY...\n");
+
+ }
+ else {
+ sst_drv_ctx->audio_start++;
+ }
+ }
+#endif
+ sst_drv_ctx->pb_streams++;
+ } else if (str_param->ops == STREAM_OPS_CAPTURE) {
+
+ sst_drv_ctx->scard_ops->power_up_pmic_cp(
+ sst_drv_ctx->pmic_port_instance);
+ /*Send a messageif not sent already*/
+#ifdef CONFIG_MSTWN_POWER_MGMT
+ if(sst_drv_ctx->audio_start == 0) {
+ sst_ospm_send_event(OSPM_EVENT_SUBSYS_START_PLAY);
+ printk(KERN_DEBUG "SST DBG:audio_start:%d", sst_drv_ctx->audio_start);
+ printk(KERN_DEBUG "SST DBG:Sending OSPM_EVENT_SUBSYS_START_PLAY...\n");
+ sst_drv_ctx->audio_start++;
+ }else {
+ sst_drv_ctx->audio_start++;
+ }
+#endif
+ sst_drv_ctx->cp_streams++;
+ }
+
+err:
+ sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT;
+ return retval;
+}
+
+/**
+* intel_sst_ioctl - recieves the device ioctl's
+* @i_node: inode structure
+* @file_ptr: pointer to file
+* @cmd: Ioctl cmd
+* @arg: data
+*
+* This function is called by OS when a user space component
+* sends an Ioctl to SST driver
+*/
+int intel_sst_ioctl(struct inode *i_node, struct file *file_ptr,
+ unsigned int cmd, unsigned long arg)
+{
+ int retval = 0;
+ struct ioctl_pvt_data *data = NULL;
+ int str_id = 0, minor = 0;
+ dev_t device = i_node->i_rdev;
+
+ if (device == MKDEV(INTEL_SST_MAJOR, 0)) {
+ minor = 0;
+ data = (struct ioctl_pvt_data *)
+ file_ptr->private_data;
+ str_id = data->str_id;
+ } else if (device == MKDEV(INTEL_SST_MAJOR, 1))
+ minor = 1;
+ else
+ return -EINVAL;
+
+ if (sst_drv_ctx->sst_state != SST_FW_RUNNING) {
+ printk(KERN_ERR
+ "SST ERR: SST Not runng %d\n " , sst_drv_ctx->sst_state);
+ return -EBUSY;
+ }
+
+ switch (_IOC_NR(cmd)) {
+ case _IOC_NR(SNDRV_SST_STREAM_PAUSE):
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_IOCTL_PAUSE recieved for %d!\n", str_id);
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor%d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_pause_stream(str_id);
+ break;
+
+ case _IOC_NR(SNDRV_SST_STREAM_RESUME):
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_IOCTL_RESUME recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: caled for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_resume_stream(str_id);
+ break;
+
+ case _IOC_NR(SNDRV_SST_STREAM_SET_PARAMS): {
+ struct snd_sst_params *str_param = (struct snd_sst_params *)arg;
+
+ printk(KERN_DEBUG "SST DBG:IOCTL_SET_PARAMS recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: caled for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ sst_print_params(str_param);
+
+ if (!str_id) {
+ retval = sst_get_stream(str_param, data->pvt_id);
+ if (retval > 0) {
+ struct stream_info *str_info;
+ sst_drv_ctx->stream_cnt++;
+ data->str_id = retval;
+ str_info = &sst_drv_ctx->streams[retval];
+ str_info->src = SST_DRV;
+ retval = copy_to_user(&str_param->stream_id,
+ &retval, sizeof(__u32));
+ } else {
+ if (retval == -SST_ERR_INVALID_PARAMS)
+ retval = -EINVAL;
+ }
+ } else {
+ printk(KERN_DEBUG "SST DBG:SET_STREAM_PARAMS recieved!\n");
+ /* allocated set params only */
+ retval = sst_set_stream_param(str_id, str_param);
+ /* Block the call for reply */
+ if (!retval) {
+ int sfreq = 0, word_size = 0, num_channel = 0;
+ sfreq = str_param->sparams.uc.pcm_params.sfreq;
+ word_size = str_param->sparams.
+ uc.pcm_params.pcm_wd_sz;
+ num_channel = str_param->sparams.uc.pcm_params.num_chan;
+ if (str_param->ops == STREAM_OPS_CAPTURE) {
+ printk(KERN_DEBUG "SST DBG:SST sampling frequency= %d\n",
+ sfreq);
+ sst_drv_ctx->scard_ops->\
+ set_pcm_audio_params(sfreq, word_size, num_channel);
+ }
+ }
+ }
+ break;
+ }
+ case _IOC_NR(SNDRV_SST_SET_VOL): {
+ struct snd_sst_vol *set_vol;
+ struct snd_sst_vol *rec_vol = (struct snd_sst_vol *)arg;
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_SET_VOLUME recieved for %d!\n",
+ rec_vol->stream_id);
+ if (minor == STREAM_MODULE && rec_vol->stream_id == 0) {
+ printk(KERN_DEBUG "SST DBG:invalid operation!\n");
+ retval = -EPERM;
+ break;
+ }
+ set_vol = kzalloc(sizeof(*set_vol), GFP_ATOMIC);
+ if (!set_vol) {
+ printk(KERN_DEBUG "SST DBG:mem allocation failed\n");
+ retval = -ENOMEM;
+ break;
+ }
+ retval = copy_from_user(set_vol, rec_vol, sizeof(*set_vol));
+ if (retval) {
+ printk(KERN_DEBUG "SST DBG:copy failed\n");
+ retval = -EAGAIN;
+ break;
+ }
+ retval = sst_set_vol(set_vol);
+ kfree(set_vol);
+ break;
+ }
+ case _IOC_NR(SNDRV_SST_GET_VOL): {
+ struct snd_sst_vol *rec_vol = (struct snd_sst_vol *)arg;
+ struct snd_sst_vol get_vol;
+ printk(KERN_DEBUG "SST DBG:IOCTL_GET_VOLUME recieved for stream = %d!\n",
+ rec_vol->stream_id);
+ if (minor == STREAM_MODULE && rec_vol->stream_id == 0) {
+ printk(KERN_DEBUG "SST DBG:invalid operation!\n");
+ retval = -EPERM;
+ break;
+ }
+ get_vol.stream_id = rec_vol->stream_id;
+ retval = sst_get_vol(&get_vol);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: Get volume failed = %d\n", retval);
+ retval = -EIO;
+ break;
+ }
+ printk(KERN_DEBUG "SST DBG:id = %d\n, vol = %d, ramp_dur = %d, ramp_type=%d\n",
+ get_vol.stream_id, get_vol.volume,
+ get_vol.ramp_duration, get_vol.ramp_type);
+ retval = copy_to_user((struct snd_sst_vol *)arg,
+ &get_vol, sizeof(get_vol));
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: copy to user failed %d\n", retval);
+ retval = -EIO;
+ break;
+ }
+ /*sst_print_get_vol_info(str_id, &get_vol);*/
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_MUTE): {
+ struct snd_sst_mute *set_mute;
+ struct snd_sst_vol *rec_mute = (struct snd_sst_vol *)arg;
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_SET_VOLUME recieved for %d!\n",
+ rec_mute->stream_id);
+ if (minor == STREAM_MODULE && rec_mute->stream_id == 0) {
+ printk(KERN_DEBUG "SST DBG:invalid operation!\n");
+ retval = -EPERM;
+ break;
+ }
+ set_mute = kzalloc(sizeof(*set_mute), GFP_ATOMIC);
+ if (!set_mute) {
+ printk(KERN_DEBUG "SST DBG:mem allocation failed\n");
+ retval = -ENOMEM;
+ break;
+ }
+ retval = copy_from_user(set_mute, rec_mute, sizeof(*set_mute));
+ if (retval) {
+ printk(KERN_DEBUG "SST DBG:copy failed\n");
+ retval = -EAGAIN;
+ break;
+ }
+ retval = sst_set_mute(set_mute);
+ kfree(set_mute);
+ break;
+ }
+ case _IOC_NR(SNDRV_SST_STREAM_GET_PARAMS): {
+ struct snd_sst_get_stream_params get_params;
+
+ printk(KERN_DEBUG "SST DBG:IOCTL_GET_PARAMS recieved!\n");
+ if (minor != 0) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+
+ retval = sst_get_stream_params(str_id, &get_params);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: Get params failed = %d\n", retval);
+ retval = -EIO;
+ break;
+ }
+ retval = copy_to_user((struct snd_sst_get_stream_params *)arg,
+ &get_params, sizeof(get_params));
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: copy to user failed %d\n" , retval);
+ retval = -EIO;
+ break;
+ }
+ sst_print_stream_params(&get_params);
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_MMAP_PLAY):
+ case _IOC_NR(SNDRV_SST_MMAP_CAPTURE):
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_MMAP_PLAY/CAPTURE recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor %d\n" , minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = intel_sst_mmap_play_capture(str_id,
+ (struct snd_sst_mmap_buffs *)arg);
+ break;
+
+ case _IOC_NR(SNDRV_SST_STREAM_DROP):
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_IOCTL_DROP recieved!\n");
+ if (minor != STREAM_MODULE) {
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_drop_stream(str_id);
+ break;
+
+ case _IOC_NR(SNDRV_SST_STREAM_GET_TSTAMP): {
+ unsigned long long *ms = (unsigned long long *)arg;
+ struct snd_sst_tstamp tstamp = {0};
+ unsigned long long time, freq, mod;
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_STREAM_GET_TSTAMP recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ memcpy_fromio(&tstamp,
+ ((void *)(sst_drv_ctx->mailbox + SST_TIME_STAMP)
+ +(str_id * sizeof(tstamp))),
+ sizeof(tstamp));
+ time = tstamp.samples_rendered;
+ printk(KERN_DEBUG "SST DBG:samples rendered! = 0x%llx\n", time);
+ freq = (unsigned long long) tstamp.sampling_frequency;
+ printk(KERN_DEBUG "SST DBG:freq = %llx\n", freq);
+ time = time * 1000; /* converting it to ms */
+ mod = do_div(time, freq);
+ printk(KERN_DEBUG "SST DBG:mod = 0x%llx\n", mod);
+ printk(KERN_DEBUG "SST DBG:msec = 0x%llx\n", time);
+ retval = copy_to_user(ms, &time, sizeof(*ms));
+ if (retval)
+ printk(KERN_ERR
+ "SST ERR: copy failed = %d\n", retval);
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_STREAM_START):{
+ struct stream_info *stream;
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_STREAM_START recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ break;
+ stream = &sst_drv_ctx->streams[str_id];
+ mutex_lock(&stream->lock);
+ if (stream->status == STREAM_INIT &&
+ stream->need_draining != true) {
+ printk(KERN_DEBUG "SST DBG:calling play frames...\n");
+ stream->prev = stream->status;
+ stream->status = STREAM_RUNNING;
+ if (stream->ops == STREAM_OPS_PLAYBACK ||
+ stream->ops == STREAM_OPS_PLAYBACK_DRM) {
+ retval = sst_play_frame(str_id);
+ /*sst_ospm_send_event(
+ OSPM_EVENT_SUBSYS_START_PLAY);*/
+ } else if (stream->ops == STREAM_OPS_CAPTURE)
+ retval = sst_capture_frame(str_id);
+ else {
+ printk(KERN_ERR
+ "SST ERR: Invalid ops 0x%x\n" , stream->ops);
+ retval = -EINVAL;
+ mutex_unlock(
+ &sst_drv_ctx->streams[str_id].lock);
+ break;
+ }
+ if (retval < 0) {
+ printk(KERN_ERR
+ "SST ERR: play/cptur frame fail \n");
+ stream->status = STREAM_INIT;
+ mutex_unlock(
+ &sst_drv_ctx->streams[str_id].lock);
+ break;
+ }
+ } else {
+ printk(KERN_ERR
+ "SST ERR: Inv strt for stream%d state0x%x\n", \
+ str_id, stream->status);
+ retval = -EINVAL;
+ }
+ mutex_unlock(&sst_drv_ctx->streams[str_id].lock);
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_SET_TARGET_DEVICE): {
+ struct snd_sst_target_device *target_device;
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_SET_TARGET_PLAYBACK DEVICE recieved!\n");
+ target_device = (struct snd_sst_target_device *)arg;
+ BUG_ON(!target_device);
+ if (minor != AM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for non AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_target_device_select(target_device);
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_DRIVER_INFO): {
+ struct snd_sst_driver_info *info =
+ (struct snd_sst_driver_info *)arg;
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_DRIVER_INFO recived \n");
+ info->version = SST_VERSION_NUM;
+ /* hard coding, shud get sumhow later */
+ info->active_pcm_streams = sst_drv_ctx->stream_cnt -
+ sst_drv_ctx->encoded_cnt;
+ info->active_enc_streams = sst_drv_ctx->encoded_cnt;
+ info->max_pcm_streams = MAX_ACTIVE_STREAM - MAX_ENC_STREAM;
+ info->max_enc_streams = MAX_ENC_STREAM;
+ info->buf_per_stream = sst_drv_ctx->mmap_len;
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_STREAM_DECODE): {
+ struct snd_sst_dbufs *param =
+ (struct snd_sst_dbufs *)arg, dbufs_local;
+ int i;
+ struct snd_sst_buffs ibufs, obufs;
+ struct snd_sst_buff_entry ibuf_temp[param->ibufs->entries],
+ obuf_temp[param->obufs->entries];
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_STREAM_DECODE recived \n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: called for AM handle minor %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ if (!param) {
+ printk(KERN_ERR "SST ERR: null param passed\n");
+ retval = -EINVAL;
+ break;
+ }
+
+ dbufs_local.input_bytes_consumed = param->input_bytes_consumed;
+ dbufs_local.output_bytes_produced =
+ param->output_bytes_produced;
+ dbufs_local.ibufs = &ibufs;
+ dbufs_local.obufs = &obufs;
+ dbufs_local.ibufs->entries = param->ibufs->entries;
+ dbufs_local.ibufs->type = param->ibufs->type;
+ dbufs_local.obufs->entries = param->obufs->entries;
+ dbufs_local.obufs->type = param->obufs->type;
+
+ dbufs_local.ibufs->buff_entry = ibuf_temp;
+ for (i = 0; i < dbufs_local.ibufs->entries; i++) {
+ ibuf_temp[i].buffer =
+ param->ibufs->buff_entry[i].buffer;
+ ibuf_temp[i].size =
+ param->ibufs->buff_entry[i].size;
+ }
+ dbufs_local.obufs->buff_entry = obuf_temp;
+ for (i = 0; i < dbufs_local.obufs->entries; i++) {
+ obuf_temp[i].buffer =
+ param->obufs->buff_entry[i].buffer;
+ obuf_temp[i].size =
+ param->obufs->buff_entry[i].size;
+ }
+ retval = sst_decode(str_id, &dbufs_local);
+ if (retval) {
+ printk(KERN_ERR"SST ERR: decoding failed \n");
+ retval = -EAGAIN;
+ }
+ retval = copy_to_user(&param->input_bytes_consumed,
+ &dbufs_local.input_bytes_consumed,
+ sizeof(unsigned long long));
+ if (retval) {
+ printk(KERN_ERR"SST ERR: copy to user failed \n");
+ retval = -EAGAIN;
+ break;
+ }
+ retval = copy_to_user(&param->output_bytes_produced,
+ &dbufs_local.output_bytes_produced,
+ sizeof(unsigned long long));
+ if (retval) {
+ printk(KERN_ERR"SST ERR: copy to user failed \n");
+ retval = -EAGAIN;
+ break;
+ }
+ printk(KERN_DEBUG "SST DBG:input_bytes_consumed=%lld\n",
+ param->input_bytes_consumed);
+ printk(KERN_DEBUG "SST DBG:output_bytes_produced=%lld\n",
+ param->output_bytes_produced);
+ printk(KERN_DEBUG "SST DBG:ibufs->entries=%d\n", param->ibufs->entries);
+ printk(KERN_DEBUG "SST DBG:input_consumed = %lld, output_produced = %lld \n",
+ param->input_bytes_consumed,
+ param->output_bytes_produced);
+ printk(KERN_DEBUG "SST DBG:first ibufs size=%d\n",
+ param->ibufs->buff_entry[0].size);
+ printk(KERN_DEBUG "SST DBG:first ibufs addr=%p\n",
+ param->ibufs->buff_entry[0].buffer);
+ printk(KERN_DEBUG "SST DBG:obufs->entries=%d\n", param->obufs->entries);
+ printk(KERN_DEBUG "SST DBG:first obufs size=%d\n",
+ param->obufs->buff_entry[0].size);
+ printk(KERN_DEBUG "SST DBG:first obufs addr=%p\n",
+ param->obufs->buff_entry[0].buffer);
+ break;
+ }
+
+ case _IOC_NR(SNDRV_SST_STREAM_DRAIN):
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_STREAM_DRAIN recived \n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: caled for AM handle minr %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ retval = sst_drain_stream(str_id);
+ break;
+
+ case _IOC_NR(SNDRV_SST_STREAM_BYTES_DECODED): {
+ unsigned long long *bytes = (unsigned long long *)arg;
+ struct snd_sst_tstamp tstamp = {0};
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_STREAM_BYTES_DECODED recieved!\n");
+ if (minor != STREAM_MODULE) {
+ printk(KERN_ERR
+ "SST ERR: caled for AM hndle minr %d\n", minor);
+ retval = -EINVAL;
+ break;
+ }
+ memcpy_fromio(&tstamp,
+ ((void *)(sst_drv_ctx->mailbox + SST_TIME_STAMP)
+ +(str_id * sizeof(tstamp))),
+ sizeof(tstamp));
+ retval = copy_to_user(bytes, &tstamp.bytes_processed,
+ sizeof(*bytes));
+ printk(KERN_DEBUG "SST DBG:bytes processed =%lld\n", tstamp.bytes_processed);
+ if (retval)
+ printk(KERN_ERR
+ "SST ERR: copy failed = %d\n", retval);
+ break;
+ }
+ case _IOC_NR(SNDRV_SST_FW_INFO): {
+ struct snd_sst_fw_info *fw_info;
+
+ printk(KERN_DEBUG "SST DBG:SNDRV_SST_FW_INFO recived \n");
+
+ fw_info = kzalloc(sizeof(*fw_info), GFP_ATOMIC);
+ if (!fw_info) {
+ printk(KERN_ERR "SST ERR: mem alocation fail\n");
+ retval = -ENOMEM;
+ break;
+ }
+ retval = sst_get_fw_info(fw_info);
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: sst_get_fw_info fail = %d\n", retval);
+ kfree(fw_info);
+ break;
+ }
+ retval = copy_to_user((struct snd_sst_dbufs *)arg,
+ fw_info, sizeof(*fw_info));
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: copy to user failed %d\n", retval);
+ kfree(fw_info);
+ retval = -EIO;
+ break;
+ }
+ sst_print_fw_info(fw_info);
+ kfree(fw_info);
+ break;
+ }
+ default:
+ printk(KERN_DEBUG "SST DBG:IOCTL not supported yet !\n");
+ retval = -ENOTTY;
+ }
+ printk(KERN_DEBUG "SST DBG:...complete ret code = %d\n", retval);
+
+ return retval;
+}
+
+/*
+ Intelmid driver interface Routines
+*/
+
+void sst_process_mad_ops(struct work_struct *work)
+{
+ struct mad_ops_wq *mad_ops =
+ container_of(work, struct mad_ops_wq, wq);
+ int retval = 0;
+ struct stream_info *stream;
+
+ switch (mad_ops->control_op) {
+ case SST_SND_PAUSE:
+ retval = sst_pause_stream(mad_ops->stream_id);
+ break;
+ case SST_SND_RESUME:
+ retval = sst_resume_stream(mad_ops->stream_id);
+ break;
+ case SST_SND_DROP:
+ retval = sst_drop_stream(mad_ops->stream_id);
+ break;
+ case SST_SND_STREAM_PROCESS:
+ printk(KERN_DEBUG "SST DBG:play/capt frames...\n");
+ stream = &sst_drv_ctx->streams[mad_ops->stream_id];
+ if (stream->status == STREAM_UN_INIT)
+ return;
+ stream->prev = stream->status;
+ stream->status = STREAM_RUNNING;
+ stream->data_blk.on = false;
+ if (stream->ops == STREAM_OPS_PLAYBACK)
+ retval = sst_play_frame(mad_ops->stream_id);
+ else if (stream->ops == STREAM_OPS_CAPTURE)
+ retval = sst_capture_frame(mad_ops->stream_id);
+ else
+ printk(KERN_ERR
+ "SST ERR: invalid stream ops invoked \n");
+ if (retval < 0)
+ printk(KERN_ERR
+ "SST ERR: play/captur frames failed \n");
+ break;
+ default:
+ printk(KERN_ERR
+ "SST ERR: wrong control_ops reported\n");
+ }
+ return;
+}
+/**
+* sst_control_set - Set Control params
+* @control_list: list of controls to be set
+*
+* This function is called by MID sound card driver to set
+* SST/Sound card controls. This is registered with MID driver
+*/
+int sst_control_set(int control_element, void *value)
+{
+ int retval = 0, str_id = 0, status;
+ struct stream_info *stream;
+
+ if (sst_drv_ctx->sst_state == SST_UN_INIT) {
+ /* FW is not downloaded */
+ printk(KERN_DEBUG "SST DBG:DSP Downloading FW now...\n");
+ retval = sst_download_fw();
+ if (retval) {
+ printk(KERN_ERR
+ "SST ERR: FW download failed = 0x%x, abort\n", retval);
+ return retval;
+ }
+ }
+
+ switch (control_element) {
+ case SST_SND_ALLOC: {
+ struct snd_sst_params *str_param;
+ int pcm_id = sst_assign_pvt_id(sst_drv_ctx);
+ struct stream_info *str_info;
+
+ str_param = (struct snd_sst_params *)value;
+ BUG_ON(!str_param);
+ sst_print_params(str_param);
+ retval = sst_get_stream(str_param, pcm_id);
+ if (retval >= 0)
+ sst_drv_ctx->stream_cnt++;
+ /*if (str_param->ops == STREAM_OPS_PLAYBACK ||
+ str_param->ops == STREAM_OPS_PLAYBACK_DRM)
+ sst_ospm_send_event(OSPM_EVENT_SUBSYS_START_PLAY);*/
+ str_info = &sst_drv_ctx->streams[retval];
+ str_info->src = MAD_DRV;
+ break;
+ }
+
+ case SST_SND_PAUSE:
+ case SST_SND_RESUME:
+ case SST_SND_DROP:
+ sst_drv_ctx->mad_ops.control_op = control_element;
+ sst_drv_ctx->mad_ops.stream_id = *(int *)value;
+ queue_work(sst_drv_ctx->mad_wq, &sst_drv_ctx->mad_ops.wq);
+ break;
+
+ case SST_SND_FREE:
+ str_id = *(int *)value;
+ stream = &sst_drv_ctx->streams[str_id];
+ free_stream_context(str_id);
+ stream->pcm_substream = NULL;
+ stream->period_elapsed = NULL;
+ sst_drv_ctx->stream_cnt--;
+ break;
+
+ case SST_SND_STREAM_INIT: {
+ struct pcm_stream_info *str_info;
+ struct stream_info *stream;
+
+ printk(KERN_DEBUG "SST DBG:stream init called\n");
+ str_info = (struct pcm_stream_info *)value;
+ str_id = str_info->str_id;
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ break;
+
+ stream = &sst_drv_ctx->streams[str_id];
+ printk(KERN_DEBUG "SST DBG:setting the period ptrs\n");
+ stream->pcm_substream = str_info->mad_substream;
+ stream->period_elapsed = str_info->period_elapsed;
+ stream->sfreq = str_info->sfreq;
+ stream->prev = stream->status;
+ stream->status = STREAM_INIT;
+ break;
+ }
+
+ case SST_SND_BUFFER_POINTER: {
+ struct pcm_stream_info *stream_info;
+ struct snd_sst_tstamp fw_tstamp = {0,};
+ struct stream_info *stream;
+
+ // printk(KERN_DEBUG "SST DBG:buffer pointer query\n");
+
+ stream_info = (struct pcm_stream_info *)value;
+ str_id = stream_info->str_id;
+ retval = sst_validate_strid(str_id);
+ if (retval)
+ break;
+ stream = &sst_drv_ctx->streams[str_id];
+
+ if (!stream->pcm_substream)
+ break;
+ memcpy_fromio(&fw_tstamp,
+ ((void *)(sst_drv_ctx->mailbox + SST_TIME_STAMP)
+ +(str_id * sizeof(fw_tstamp))),
+ sizeof(fw_tstamp));
+
+ // printk(KERN_DEBUG "SST DBG:strid = %d\n", str_id);
+
+ if (stream->ops == STREAM_OPS_PLAYBACK)
+ stream_info->buffer_ptr = fw_tstamp.samples_rendered;
+ else
+ stream_info->buffer_ptr = fw_tstamp.samples_processed;
+ /* printk(KERN_DEBUG "SST DBG:samples played = %lld\n",
+ stream_info->buffer_ptr);
+ */
+ break;
+ }
+ case SST_ENABLE_RX_TIME_SLOT: {
+ status = *(int *)value;
+ sst_drv_ctx->rx_time_slot_status = status ;
+ printk(KERN_DEBUG "SST DBG:in case:: **********SST_ENABLE_RX_TIME_SLOT*********** \n");
+ sst_enable_rx_timeslot(status);
+ break;
+ }
+ default:
+ /* Illegal case */
+ printk(KERN_ERR"SST ERR: illegal req\n");
+ return -EINVAL;
+ }
+// printk(KERN_DEBUG "SST DBG:...complete ret code = %d\n", retval);
+
+ return retval;
+}
+
+
+/**
+* sst_send_data_to_HW - send data buffers
+* @buffer_data: user buffer
+*
+* This function is called by MID sound card driver to send buffer
+* to HW. This is registered with MID driver
+*/
+int sst_send_buffer_to_HW(int str_id, struct stream_buffer *mad_buf)
+{
+ /* recvd a buffer map it to stream */
+ /* this is a PCM stream and playback */
+ int retval = 0;
+ bool flag_add = false;
+ struct sst_stream_bufs *sst_buf = NULL, *_sst_buf;
+ struct stream_info *stream;
+
+ if (!mad_buf || !mad_buf->addr || !mad_buf->length) {
+ printk(KERN_ERR
+ "SST ERR: Null Ptr or buf size = 0\n");
+ return -EINVAL;
+ }
+
+ if (sst_drv_ctx->sst_state != SST_FW_RUNNING) {
+ printk(KERN_ERR
+ "SST ERR: SST Not runng: %d\n", sst_drv_ctx->sst_state);
+ return -EBUSY;
+ }
+
+ retval = sst_validate_strid(str_id);
+ if (retval < 0)
+ return -EINVAL;
+
+ stream = &sst_drv_ctx->streams[str_id];
+ printk(KERN_DEBUG "SST DBG:stream status = %d strid=%d\n", stream->status, str_id);
+ printk(KERN_DEBUG "SST DBG:stream codec = %d, prevstate=%d\n",
+ stream->codec, stream->prev);
+ if (stream->status == STREAM_UN_INIT) {
+ printk(KERN_ERR"SST ERR: BAD REQUEST!\n");
+ return -EBADRQC;
+ }
+ printk(KERN_DEBUG "SST DBG:received addr=0x%x size = 0x%x\n",
+ (unsigned int)mad_buf->addr, mad_buf->length);
+ /* list is not empty */
+ list_for_each_entry_safe(sst_buf, _sst_buf, &stream->bufs, node) {
+ if (sst_buf->in_use == true)
+ continue;
+ else if ((int) mad_buf->addr !=
+ (int)sst_buf->addr + sst_buf->size)
+ continue;
+ else {
+ sst_buf->size += mad_buf->length;
+ flag_add = true;
+ printk(KERN_DEBUG "SST DBG:inc addr = 0x%p, base = 0x%x inc_val = 0x%x\n",
+ sst_buf->addr, sst_buf->size, mad_buf->length);
+ break;
+ }
+ }
+
+ if (flag_add == false) {
+ sst_buf = kzalloc(sizeof(*sst_buf), GFP_ATOMIC);
+ if (!sst_buf)
+ return -ENOMEM;
+ sst_buf->size = mad_buf->length;
+ sst_buf->addr = (void *)mad_buf->addr;
+ sst_buf->offset = 0;
+ sst_buf->in_use = false;
+ /*adding without locking FIXME*/
+ if( in_interrupt()) {
+ list_add_tail(&sst_buf->node, &stream->bufs);
+ } else {
+ spin_lock(&stream->pcm_lock);
+ list_add_tail(&sst_buf->node, &stream->bufs);
+ spin_unlock(&stream->pcm_lock);
+ }
+
+
+ flag_add = true;
+ printk(KERN_DEBUG "SST DBG:entry added addr = 0x%x size = 0x%x\n",
+ (unsigned int)mad_buf->addr, mad_buf->length);
+ }
+
+ if (stream->status == STREAM_INIT) {
+ sst_drv_ctx->mad_ops.control_op = SST_SND_STREAM_PROCESS;
+ sst_drv_ctx->mad_ops.stream_id = str_id;
+ queue_work(sst_drv_ctx->mad_wq, &sst_drv_ctx->mad_ops.wq);
+ }
+
+ return retval;
+}
+
+struct intel_sst_card_ops sst_pmic_ops = {
+ .control_set = sst_control_set,
+ .send_buffer = sst_send_buffer_to_HW,
+};
+
+/**
+* register_sst_card- function for sound card to register
+* @card: pointer to structure of operations
+* This function is called card driver loads and is ready for registration
+*/
+int register_sst_card(struct intel_sst_card_ops *card)
+{
+
+ if (!card || !card->module_name) {
+ printk(KERN_ERR "SST ERR: Null Pointer Passed\n");
+ return -EINVAL;
+ }
+
+ if (sst_drv_ctx->pmic_state == SND_MAD_UN_INIT) {
+ /* register this driver */
+ if ((strncmp(SST_CARD_NAMES, card->module_name,
+ strlen(SST_CARD_NAMES))) == 0) {
+ sst_drv_ctx->pmic_vendor = card->vendor_id;
+ sst_drv_ctx->scard_ops = card->scard_ops;
+ sst_pmic_ops.module_name = card->module_name;
+ sst_drv_ctx->pmic_state = SND_MAD_INIT_DONE;
+ sst_drv_ctx->rx_time_slot_status = RX_TIMESLOT_UNINIT;
+ card->control_set = sst_pmic_ops.control_set;
+ card->send_buffer = sst_pmic_ops.send_buffer;
+ sst_drv_ctx->scard_ops->card_status = SND_CARD_UN_INIT;
+ /* initialize card to know good state */
+ /*sst_drv_ctx->scard_ops->init_card();*/
+ return 0;
+ } else {
+ printk(KERN_ERR
+ "SST ERR: strcmp failed %s \n", card->module_name);
+ return -EINVAL;
+ }
+
+ } else {
+ /* already registered a driver */
+ printk(KERN_ERR
+ "SST ERR: Repeat for register..denied\n");
+ return -EBADRQC;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(register_sst_card);
+
+/**
+* unregister_sst_card- function for sound card to un-register
+* @card: pointer to structure of operations
+* This function is called when card driver unloads
+*/
+void unregister_sst_card(struct intel_sst_card_ops *card)
+{
+ if (sst_pmic_ops.module_name == card->module_name) {
+ /* unreg */
+ sst_pmic_ops.module_name = "";
+ sst_drv_ctx->pmic_state = SND_MAD_UN_INIT;
+ printk(KERN_DEBUG "SST DBG:Unregistered %s\n", card->module_name);
+ }
+ return;
+}
+EXPORT_SYMBOL_GPL(unregister_sst_card);
+
+/**
+* lpe_mask_periphral_intr- function to mask SST DSP peripheral interrupt
+* @device: device interrupt that needs masking
+*/
+int lpe_mask_periphral_intr(enum lpe_periphral device)
+{
+ union sst_pimr_reg pimr = {{0},};
+ if (!sst_drv_ctx)
+ return -EIO;
+
+ pimr.full = readl(sst_drv_ctx->shim + SST_PIMR);
+
+ switch (device) {
+ case LPE_DMA:
+ pimr.part.dmac_sc = 1;
+ /* dummy register for shim workaround */
+ writel(pimr.full, sst_drv_ctx->shim + SST_ISRD);
+ writel(pimr.full, sst_drv_ctx->shim + SST_PIMR);
+ break;
+
+ case LPE_SSP0:
+ break;
+
+ case LPE_SSP1:
+ break;
+
+ default:
+ break;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(lpe_mask_periphral_intr);
+
+/**
+* lpe_unmask_periphral_intr- function to unmask SST DSP peripheral interrupt
+* @device: device interrupt that needs unmasking
+*/
+int lpe_unmask_periphral_intr(enum lpe_periphral device)
+{
+ union sst_pimr_reg pimr = {{0},};
+ if (!sst_drv_ctx)
+ return -EIO;
+
+ pimr.full = readl(sst_drv_ctx->shim + SST_PIMR);
+
+ switch (device) {
+ case LPE_DMA:
+ pimr.part.dmac_sc = 0;
+ /* dummy register for shim workaround */
+ writel(pimr.full, sst_drv_ctx->shim + SST_ISRD);
+ writel(pimr.full, sst_drv_ctx->shim + SST_PIMR);
+ break;
+
+ case LPE_SSP0:
+ break;
+
+ case LPE_SSP1:
+ break;
+
+ default:
+ break;
+ }
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(lpe_unmask_periphral_intr);
+
+/**
+* lpe_periphral_intr_status- function returns SST peripheral interrupt status
+* @device: device for which the status is enquired
+* @status: out parameters with the status of the peripheral device
+*/
+int lpe_periphral_intr_status(enum lpe_periphral device, int *status)
+{
+ union sst_pisr_reg pisr = {{0},};
+ if (!sst_drv_ctx)
+ return -EIO;
+
+ pisr.full = readl(sst_drv_ctx->shim + SST_PISR);
+
+ switch (device) {
+ case LPE_DMA:
+ *status = pisr.part.dmac;
+ break;
+
+ case LPE_SSP0:
+ break;
+
+ case LPE_SSP1:
+ break;
+
+ default:
+ break;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(lpe_periphral_intr_status);
--
1.6.2.2
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