diff options
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/smd.c | 61 |
1 files changed, 33 insertions, 28 deletions
diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c index beaea1d..3efa367 100644 --- a/drivers/soc/qcom/smd.c +++ b/drivers/soc/qcom/smd.c @@ -65,7 +65,9 @@ */ struct smd_channel_info; +struct smd_channel_info_pair; struct smd_channel_info_word; +struct smd_channel_info_word_pair; #define SMD_ALLOC_TBL_COUNT 2 #define SMD_ALLOC_TBL_SIZE 64 @@ -151,10 +153,8 @@ enum smd_channel_state { * @name: name of the channel * @state: local state of the channel * @remote_state: remote state of the channel - * @tx_info: byte aligned outgoing channel info - * @rx_info: byte aligned incoming channel info - * @tx_info_word: word aligned outgoing channel info - * @rx_info_word: word aligned incoming channel info + * @info: byte aligned outgoing/incoming channel info + * @info_word: word aligned outgoing/incoming channel info * @tx_lock: lock to make writes to the channel mutually exclusive * @fblockread_event: wakeup event tied to tx fBLOCKREADINTR * @tx_fifo: pointer to the outgoing ring buffer @@ -175,11 +175,8 @@ struct qcom_smd_channel { enum smd_channel_state state; enum smd_channel_state remote_state; - struct smd_channel_info *tx_info; - struct smd_channel_info *rx_info; - - struct smd_channel_info_word *tx_info_word; - struct smd_channel_info_word *rx_info_word; + struct smd_channel_info_pair *info; + struct smd_channel_info_word_pair *info_word; struct mutex tx_lock; wait_queue_head_t fblockread_event; @@ -228,6 +225,11 @@ struct smd_channel_info { u32 head; }; +struct smd_channel_info_pair { + struct smd_channel_info tx; + struct smd_channel_info rx; +}; + /* * Format of the smd_info smem items, for word aligned channels. */ @@ -245,25 +247,30 @@ struct smd_channel_info_word { u32 head; }; +struct smd_channel_info_word_pair { + struct smd_channel_info_word tx; + struct smd_channel_info_word rx; +}; + #define GET_RX_CHANNEL_INFO(channel, param) \ - (channel->rx_info_word ? \ - channel->rx_info_word->param : \ - channel->rx_info->param) + (channel->info_word ? \ + channel->info_word->rx.param : \ + channel->info->rx.param) #define SET_RX_CHANNEL_INFO(channel, param, value) \ - (channel->rx_info_word ? \ - (channel->rx_info_word->param = value) : \ - (channel->rx_info->param = value)) + (channel->info_word ? \ + (channel->info_word->rx.param = value) : \ + (channel->info->rx.param = value)) #define GET_TX_CHANNEL_INFO(channel, param) \ - (channel->tx_info_word ? \ - channel->tx_info_word->param : \ - channel->tx_info->param) + (channel->info_word ? \ + channel->info_word->tx.param : \ + channel->info->tx.param) #define SET_TX_CHANNEL_INFO(channel, param, value) \ - (channel->tx_info_word ? \ - (channel->tx_info_word->param = value) : \ - (channel->tx_info->param = value)) + (channel->info_word ? \ + (channel->info_word->tx.param = value) : \ + (channel->info->tx.param = value)) /** * struct qcom_smd_alloc_entry - channel allocation entry @@ -412,7 +419,7 @@ static size_t qcom_smd_channel_peek(struct qcom_smd_channel *channel, unsigned tail; size_t len; - word_aligned = channel->rx_info_word != NULL; + word_aligned = channel->info_word; tail = GET_RX_CHANNEL_INFO(channel, tail); len = min_t(size_t, count, channel->fifo_size - tail); @@ -627,7 +634,7 @@ static int qcom_smd_write_fifo(struct qcom_smd_channel *channel, unsigned head; size_t len; - word_aligned = channel->tx_info_word != NULL; + word_aligned = channel->info_word; head = GET_TX_CHANNEL_INFO(channel, head); len = min_t(size_t, count, channel->fifo_size - head); @@ -670,7 +677,7 @@ int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len) int ret; /* Word aligned channels only accept word size aligned data */ - if (channel->rx_info_word != NULL && len % 4) + if (channel->info_word && len % 4) return -EINVAL; ret = mutex_lock_interruptible(&channel->tx_lock); @@ -1000,11 +1007,9 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed * use. */ if (info_size == 2 * sizeof(struct smd_channel_info_word)) { - channel->tx_info_word = info; - channel->rx_info_word = info + sizeof(struct smd_channel_info_word); + channel->info_word = info; } else if (info_size == 2 * sizeof(struct smd_channel_info)) { - channel->tx_info = info; - channel->rx_info = info + sizeof(struct smd_channel_info); + channel->info = info; } else { dev_err(smd->dev, "channel info of size %zu not supported\n", info_size); |