diff options
| author | Christian Gromm <christian.gromm@microchip.com> | 2018-05-08 12:44:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-08 14:41:48 +0300 |
| commit | dbd36d5772f7e49e1e638391941de358d84ce379 (patch) | |
| tree | 37f3c1fa14d4889b6883ba135413396092d6989f /drivers/staging/most/dim2/dim2.c | |
| parent | 95b2f82d63f6d0888db188dddf76433dce32affe (diff) | |
| download | linux-dbd36d5772f7e49e1e638391941de358d84ce379.tar.xz | |
staging: most: add channel property dbr_size
This patch adds the channel property dbr_size to control the corresponding
buffer size of the channels of the DIM2 interface.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/most/dim2/dim2.c')
| -rw-r--r-- | drivers/staging/most/dim2/dim2.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c index fa4559b8f536..d15867a1ba2d 100644 --- a/drivers/staging/most/dim2/dim2.c +++ b/drivers/staging/most/dim2/dim2.c @@ -61,6 +61,7 @@ struct hdm_channel { char name[sizeof "caNNN"]; bool is_initialized; struct dim_channel ch; + u16 *reset_dbr_size; struct list_head pending_list; /* before dim_enqueue_buffer() */ struct list_head started_list; /* after dim_enqueue_buffer() */ enum most_channel_direction direction; @@ -494,6 +495,12 @@ static int configure_channel(struct most_interface *most_iface, int ch_idx, if (hdm_ch->is_initialized) return -EPERM; + /* do not reset if the property was set by user, see poison_channel */ + hdm_ch->reset_dbr_size = ccfg->dbr_size ? NULL : &ccfg->dbr_size; + + /* zero value is default dbr_size, see dim2 hal */ + hdm_ch->ch.dbr_size = ccfg->dbr_size; + switch (ccfg->data_type) { case MOST_CH_CONTROL: new_size = dim_norm_ctrl_async_buffer_size(buf_size); @@ -574,6 +581,7 @@ static int configure_channel(struct most_interface *most_iface, int ch_idx, dev->atx_idx = ch_idx; spin_unlock_irqrestore(&dim_lock, flags); + ccfg->dbr_size = hdm_ch->ch.dbr_size; return 0; } @@ -689,6 +697,8 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx) complete_all_mbos(&hdm_ch->started_list); complete_all_mbos(&hdm_ch->pending_list); + if (hdm_ch->reset_dbr_size) + *hdm_ch->reset_dbr_size = 0; return ret; } |