Removes some functions that are not used anywhere:
sst_hsw_stream_unmute() sst_hsw_stream_mute() msg_set_stage_type()
sst_hsw_dx_get_state() sst_hsw_dx_set_state() 
sst_hsw_stream_set_write_position()
sst_hsw_stream_get_vol_reg() sst_hsw_stream_get_peak_reg()
sst_hsw_stream_get_pointer_reg() sst_hsw_stream_get_read_reg()
sst_hsw_stream_get_mixer_id() sst_hsw_stream_get_hw_id()
sst_hsw_mixer_set_volume_curve() sst_hsw_mixer_unmute() sst_hsw_mixer_mute()
sst_hsw_stream_set_volume_curve()

This was partially found by using a static code analysis program called 
cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqv...@spectrumdigital.se>
---
 sound/soc/intel/sst-haswell-ipc.c |  226 -------------------------------------
 sound/soc/intel/sst-haswell-ipc.h |   34 ------
 2 files changed, 260 deletions(-)

diff --git a/sound/soc/intel/sst-haswell-ipc.c 
b/sound/soc/intel/sst-haswell-ipc.c
index b629151..26f856c 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -333,12 +333,6 @@ static inline u32 msg_get_stage_type(u32 msg)
        return (msg & IPC_STG_TYPE_MASK) >>  IPC_STG_TYPE_SHIFT;
 }
 
-static inline u32 msg_set_stage_type(u32 msg, u32 type)
-{
-       return (msg & ~IPC_STG_TYPE_MASK) +
-               (type << IPC_STG_TYPE_SHIFT);
-}
-
 static inline u32 msg_get_stream_id(u32 msg)
 {
        return (msg & IPC_STR_ID_MASK) >>  IPC_STR_ID_SHIFT;
@@ -965,45 +959,6 @@ int sst_hsw_fw_get_version(struct sst_hsw *hsw,
 }
 
 /* Mixer Controls */
-int sst_hsw_stream_mute(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
-       u32 stage_id, u32 channel)
-{
-       int ret;
-
-       ret = sst_hsw_stream_get_volume(hsw, stream, stage_id, channel,
-               &stream->mute_volume[channel]);
-       if (ret < 0)
-               return ret;
-
-       ret = sst_hsw_stream_set_volume(hsw, stream, stage_id, channel, 0);
-       if (ret < 0) {
-               dev_err(hsw->dev, "error: can't unmute stream %d channel %d\n",
-                       stream->reply.stream_hw_id, channel);
-               return ret;
-       }
-
-       stream->mute[channel] = 1;
-       return 0;
-}
-
-int sst_hsw_stream_unmute(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
-       u32 stage_id, u32 channel)
-
-{
-       int ret;
-
-       stream->mute[channel] = 0;
-       ret = sst_hsw_stream_set_volume(hsw, stream, stage_id, channel,
-               stream->mute_volume[channel]);
-       if (ret < 0) {
-               dev_err(hsw->dev, "error: can't unmute stream %d channel %d\n",
-                       stream->reply.stream_hw_id, channel);
-               return ret;
-       }
-
-       return 0;
-}
-
 int sst_hsw_stream_get_volume(struct sst_hsw *hsw, struct sst_hsw_stream 
*stream,
        u32 stage_id, u32 channel, u32 *volume)
 {
@@ -1017,17 +972,6 @@ int sst_hsw_stream_get_volume(struct sst_hsw *hsw, struct 
sst_hsw_stream *stream
        return 0;
 }
 
-int sst_hsw_stream_set_volume_curve(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u64 curve_duration,
-       enum sst_hsw_volume_curve curve)
-{
-       /* curve duration in steps of 100ns */
-       stream->vol_req.curve_duration = curve_duration;
-       stream->vol_req.curve_type = curve;
-
-       return 0;
-}
-
 /* stream volume */
 int sst_hsw_stream_set_volume(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 stage_id, u32 channel, u32 volume)
@@ -1065,42 +1009,6 @@ int sst_hsw_stream_set_volume(struct sst_hsw *hsw,
        return 0;
 }
 
-int sst_hsw_mixer_mute(struct sst_hsw *hsw, u32 stage_id, u32 channel)
-{
-       int ret;
-
-       ret = sst_hsw_mixer_get_volume(hsw, stage_id, channel,
-               &hsw->mute_volume[channel]);
-       if (ret < 0)
-               return ret;
-
-       ret = sst_hsw_mixer_set_volume(hsw, stage_id, channel, 0);
-       if (ret < 0) {
-               dev_err(hsw->dev, "error: failed to unmute mixer channel %d\n",
-                       channel);
-               return ret;
-       }
-
-       hsw->mute[channel] = 1;
-       return 0;
-}
-
-int sst_hsw_mixer_unmute(struct sst_hsw *hsw, u32 stage_id, u32 channel)
-{
-       int ret;
-
-       ret = sst_hsw_mixer_set_volume(hsw, stage_id, channel,
-               hsw->mixer_info.volume_register_address[channel]);
-       if (ret < 0) {
-               dev_err(hsw->dev, "error: failed to unmute mixer channel %d\n",
-                       channel);
-               return ret;
-       }
-
-       hsw->mute[channel] = 0;
-       return 0;
-}
-
 int sst_hsw_mixer_get_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
        u32 *volume)
 {
@@ -1114,16 +1022,6 @@ int sst_hsw_mixer_get_volume(struct sst_hsw *hsw, u32 
stage_id, u32 channel,
        return 0;
 }
 
-int sst_hsw_mixer_set_volume_curve(struct sst_hsw *hsw,
-        u64 curve_duration, enum sst_hsw_volume_curve curve)
-{
-       /* curve duration in steps of 100ns */
-       hsw->curve_duration = curve_duration;
-       hsw->curve_type = curve;
-
-       return 0;
-}
-
 /* global mixer volume */
 int sst_hsw_mixer_set_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
        u32 volume)
@@ -1425,50 +1323,6 @@ int sst_hsw_stream_commit(struct sst_hsw *hsw, struct 
sst_hsw_stream *stream)
        return 0;
 }
 
-/* Stream Information - these calls could be inline but we want the IPC
- ABI to be opaque to client PCM drivers to cope with any future ABI changes */
-int sst_hsw_stream_get_hw_id(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream)
-{
-       return stream->reply.stream_hw_id;
-}
-
-int sst_hsw_stream_get_mixer_id(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream)
-{
-       return stream->reply.mixer_hw_id;
-}
-
-u32 sst_hsw_stream_get_read_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream)
-{
-       return stream->reply.read_position_register_address;
-}
-
-u32 sst_hsw_stream_get_pointer_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream)
-{
-       return stream->reply.presentation_position_register_address;
-}
-
-u32 sst_hsw_stream_get_peak_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 channel)
-{
-       if (channel >= 2)
-               return 0;
-
-       return stream->reply.peak_meter_register_address[channel];
-}
-
-u32 sst_hsw_stream_get_vol_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 channel)
-{
-       if (channel >= 2)
-               return 0;
-
-       return stream->reply.volume_register_address[channel];
-}
-
 int sst_hsw_mixer_get_info(struct sst_hsw *hsw)
 {
        struct sst_hsw_ipc_stream_info_reply *reply;
@@ -1591,30 +1445,6 @@ u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw 
*hsw,
        return ppos;
 }
 
-int sst_hsw_stream_set_write_position(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 stage_id, u32 position)
-{
-       u32 header;
-       int ret;
-
-       trace_stream_write_position(stream->reply.stream_hw_id, position);
-
-       header = IPC_GLB_TYPE(IPC_GLB_STREAM_MESSAGE) |
-               IPC_STR_TYPE(IPC_STR_STAGE_MESSAGE);
-       header |= (stream->reply.stream_hw_id << IPC_STR_ID_SHIFT);
-       header |= (IPC_STG_SET_WRITE_POSITION << IPC_STG_TYPE_SHIFT);
-       header |= (stage_id << IPC_STG_ID_SHIFT);
-       stream->wpos.position = position;
-
-       ret = ipc_tx_message_nowait(hsw, header, &stream->wpos,
-               sizeof(stream->wpos));
-       if (ret < 0)
-               dev_err(hsw->dev, "error: stream %d set position %d failed\n",
-                       stream->reply.stream_hw_id, position);
-
-       return ret;
-}
-
 /* physical BE config */
 int sst_hsw_device_set_config(struct sst_hsw *hsw,
        enum sst_hsw_device_id dev, enum sst_hsw_device_mclk mclk,
@@ -1644,63 +1474,7 @@ int sst_hsw_device_set_config(struct sst_hsw *hsw,
 }
 EXPORT_SYMBOL_GPL(sst_hsw_device_set_config);
 
-/* DX Config */
-int sst_hsw_dx_set_state(struct sst_hsw *hsw,
-       enum sst_hsw_dx_state state, struct sst_hsw_ipc_dx_reply *dx)
-{
-       u32 header, state_;
-       int ret, item;
-
-       header = IPC_GLB_TYPE(IPC_GLB_ENTER_DX_STATE);
-       state_ = state;
-
-       trace_ipc_request("PM enter Dx state", state);
-
-       ret = ipc_tx_message_wait(hsw, header, &state_, sizeof(state_),
-               dx, sizeof(*dx));
-       if (ret < 0) {
-               dev_err(hsw->dev, "ipc: error set dx state %d failed\n", state);
-               return ret;
-       }
-
-       for (item = 0; item < dx->entries_no; item++) {
-               dev_dbg(hsw->dev,
-                       "Item[%d] offset[%x] - size[%x] - source[%x]\n",
-                       item, dx->mem_info[item].offset,
-                       dx->mem_info[item].size,
-                       dx->mem_info[item].source);
-       }
-       dev_dbg(hsw->dev, "ipc: got %d entry numbers for state %d\n",
-               dx->entries_no, state);
-
-       memcpy(&hsw->dx, dx, sizeof(*dx));
-       return 0;
-}
-
 /* Used to save state into hsw->dx_reply */
-int sst_hsw_dx_get_state(struct sst_hsw *hsw, u32 item,
-       u32 *offset, u32 *size, u32 *source)
-{
-       struct sst_hsw_ipc_dx_memory_item *dx_mem;
-       struct sst_hsw_ipc_dx_reply *dx_reply;
-       int entry_no;
-
-       dx_reply = &hsw->dx;
-       entry_no = dx_reply->entries_no;
-
-       trace_ipc_request("PM get Dx state", entry_no);
-
-       if (item >= entry_no)
-               return -EINVAL;
-
-       dx_mem = &dx_reply->mem_info[item];
-       *offset = dx_mem->offset;
-       *size = dx_mem->size;
-       *source = dx_mem->source;
-
-       return 0;
-}
-
 static int msg_empty_list_init(struct sst_hsw *hsw)
 {
        int i;
diff --git a/sound/soc/intel/sst-haswell-ipc.h 
b/sound/soc/intel/sst-haswell-ipc.h
index 2ac194a..b6297cb 100644
--- a/sound/soc/intel/sst-haswell-ipc.h
+++ b/sound/soc/intel/sst-haswell-ipc.h
@@ -371,32 +371,18 @@ int sst_hsw_fw_get_version(struct sst_hsw *hsw,
 u32 create_channel_map(enum sst_hsw_channel_config config);
 
 /* Stream Mixer Controls - */
-int sst_hsw_stream_mute(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
-       u32 stage_id, u32 channel);
-int sst_hsw_stream_unmute(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
-       u32 stage_id, u32 channel);
 
 int sst_hsw_stream_set_volume(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 stage_id, u32 channel, u32 volume);
 int sst_hsw_stream_get_volume(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 stage_id, u32 channel, u32 *volume);
 
-int sst_hsw_stream_set_volume_curve(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u64 curve_duration,
-       enum sst_hsw_volume_curve curve);
-
 /* Global Mixer Controls - */
-int sst_hsw_mixer_mute(struct sst_hsw *hsw, u32 stage_id, u32 channel);
-int sst_hsw_mixer_unmute(struct sst_hsw *hsw, u32 stage_id, u32 channel);
-
 int sst_hsw_mixer_set_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
        u32 volume);
 int sst_hsw_mixer_get_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
        u32 *volume);
 
-int sst_hsw_mixer_set_volume_curve(struct sst_hsw *hsw,
-       u64 curve_duration, enum sst_hsw_volume_curve curve);
-
 /* Stream API */
 struct sst_hsw_stream *sst_hsw_stream_new(struct sst_hsw *hsw, int id,
        u32 (*get_write_position)(struct sst_hsw_stream *stream, void *data),
@@ -436,18 +422,6 @@ int sst_hsw_stream_set_pmemory_info(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 offset, u32 size);
 int sst_hsw_stream_set_smemory_info(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 offset, u32 size);
-int sst_hsw_stream_get_hw_id(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream);
-int sst_hsw_stream_get_mixer_id(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream);
-u32 sst_hsw_stream_get_read_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream);
-u32 sst_hsw_stream_get_pointer_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream);
-u32 sst_hsw_stream_get_peak_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 channel);
-u32 sst_hsw_stream_get_vol_reg(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 channel);
 int sst_hsw_mixer_get_info(struct sst_hsw *hsw);
 
 /* Stream ALSA trigger operations */
@@ -462,8 +436,6 @@ int sst_hsw_stream_get_read_pos(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 *position);
 int sst_hsw_stream_get_write_pos(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream, u32 *position);
-int sst_hsw_stream_set_write_position(struct sst_hsw *hsw,
-       struct sst_hsw_stream *stream, u32 stage_id, u32 position);
 u32 sst_hsw_get_dsp_position(struct sst_hsw *hsw,
        struct sst_hsw_stream *stream);
 u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw *hsw,
@@ -474,12 +446,6 @@ int sst_hsw_device_set_config(struct sst_hsw *hsw,
        enum sst_hsw_device_id dev, enum sst_hsw_device_mclk mclk,
        enum sst_hsw_device_mode mode, u32 clock_divider);
 
-/* DX Config */
-int sst_hsw_dx_set_state(struct sst_hsw *hsw,
-       enum sst_hsw_dx_state state, struct sst_hsw_ipc_dx_reply *dx);
-int sst_hsw_dx_get_state(struct sst_hsw *hsw, u32 item,
-       u32 *offset, u32 *size, u32 *source);
-
 /* init */
 int sst_hsw_dsp_init(struct device *dev, struct sst_pdata *pdata);
 void sst_hsw_dsp_free(struct device *dev, struct sst_pdata *pdata);
-- 
1.7.10.4

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