To start fixing the issues related to channels and vcs described in the
previous commit, pass vc and/or channel to various functions which will
need it do properly handle different DSI channels and VCs.
No functional changes.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
drivers/gpu/drm/omapdrm/dss/dsi.c | 54 ++++++++++++++++---------------
1 file changed, 28 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 08dd76b4549a..7c8fe5da3099 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -214,9 +214,9 @@ static void dsi_set_ulps_auto(struct dsi_data *dsi, bool enable);
static int dsi_display_init_dispc(struct dsi_data *dsi);
static void dsi_display_uninit_dispc(struct dsi_data *dsi);
-static int dsi_vc_send_null(struct dsi_data *dsi, int vc);
+static int dsi_vc_send_null(struct dsi_data *dsi, int vc, int channel);
-static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi,
+static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi, int vc,
const struct mipi_dsi_msg *msg);
static void dsi_display_disable(struct omap_dss_device *dssdev);
@@ -2457,7 +2457,7 @@ static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int vc,
/* start the DDR clock by sending a NULL packet */
if (dsi->vm_timings.ddr_clk_always_on && enable)
- dsi_vc_send_null(dsi, vc);
+ dsi_vc_send_null(dsi, vc, dsi->dsidev->channel);
dsi->in_lp_mode = !enable;
}
@@ -2607,7 +2607,8 @@ static int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int vc)
}
static inline void dsi_vc_write_long_header(struct dsi_data *dsi, int vc,
- u8 data_type, u16 len, u8 ecc)
+ int channel, u8 data_type, u16 len,
+ u8 ecc)
{
u32 val;
u8 data_id;
@@ -2635,7 +2636,7 @@ static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int vc,
dsi_write_reg(dsi, DSI_VC_LONG_PACKET_PAYLOAD(vc), val);
}
-static int dsi_vc_send_long(struct dsi_data *dsi,
+static int dsi_vc_send_long(struct dsi_data *dsi, int vc,
const struct mipi_dsi_msg *msg)
{
/*u32 val; */
@@ -2655,7 +2656,7 @@ static int dsi_vc_send_long(struct dsi_data *dsi,
dsi_vc_config_source(dsi, msg->channel, DSI_VC_SOURCE_L4);
- dsi_vc_write_long_header(dsi, msg->channel, msg->type, msg->tx_len, 0);
+ dsi_vc_write_long_header(dsi, vc, msg->channel, msg->type, msg->tx_len, 0);
p = msg->tx_buf;
for (i = 0; i < msg->tx_len >> 2; i++) {
@@ -2698,7 +2699,7 @@ static int dsi_vc_send_long(struct dsi_data *dsi,
return r;
}
-static int dsi_vc_send_short(struct dsi_data *dsi,
+static int dsi_vc_send_short(struct dsi_data *dsi, int vc,
const struct mipi_dsi_msg *msg)
{
struct mipi_dsi_packet pkt;
@@ -2729,26 +2730,26 @@ static int dsi_vc_send_short(struct dsi_data *dsi,
return 0;
}
-static int dsi_vc_send_null(struct dsi_data *dsi, int vc)
+static int dsi_vc_send_null(struct dsi_data *dsi, int vc, int channel)
{
const struct mipi_dsi_msg msg = {
.channel = vc,
.type = MIPI_DSI_NULL_PACKET,
};
- return dsi_vc_send_long(dsi, &msg);
+ return dsi_vc_send_long(dsi, vc, &msg);
}
-static int dsi_vc_write_common(struct omap_dss_device *dssdev,
+static int dsi_vc_write_common(struct omap_dss_device *dssdev, int vc,
const struct mipi_dsi_msg *msg)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
int r;
if (mipi_dsi_packet_format_is_short(msg->type))
- r = dsi_vc_send_short(dsi, msg);
+ r = dsi_vc_send_short(dsi, vc, msg);
else
- r = dsi_vc_send_long(dsi, msg);
+ r = dsi_vc_send_long(dsi, vc, msg);
if (r < 0)
return r;
@@ -2884,7 +2885,7 @@ static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int vc, u8 *buf,
return r;
}
-static int dsi_vc_dcs_read(struct omap_dss_device *dssdev,
+static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int vc,
const struct mipi_dsi_msg *msg)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
@@ -2895,7 +2896,7 @@ static int dsi_vc_dcs_read(struct omap_dss_device *dssdev,
if (dsi->debug_read)
DSSDBG("%s(ch %d, cmd %x)\n", __func__, channel, cmd);
- r = dsi_vc_send_short(dsi, msg);
+ r = dsi_vc_send_short(dsi, vc, msg);
if (r)
goto err;
@@ -2919,13 +2920,13 @@ static int dsi_vc_dcs_read(struct omap_dss_device *dssdev,
return r;
}
-static int dsi_vc_generic_read(struct omap_dss_device *dssdev,
+static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int vc,
const struct mipi_dsi_msg *msg)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
int r;
- r = dsi_vc_send_short(dsi, msg);
+ r = dsi_vc_send_short(dsi, vc, msg);
if (r)
goto err;
@@ -3674,7 +3675,7 @@ static void dsi_enable_video_output(struct omap_dss_device *dssdev, int vc)
word_count = DIV_ROUND_UP(dsi->vm.hactive * bpp, 8);
- dsi_vc_write_long_header(dsi, vc, data_type,
+ dsi_vc_write_long_header(dsi, vc, dsi->dsidev->channel, data_type,
word_count, 0);
dsi_vc_enable(dsi, vc, true);
@@ -3772,7 +3773,7 @@ static void dsi_update_screen_dispc(struct dsi_data *dsi)
l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
dsi_write_reg(dsi, DSI_VC_TE(vc), l);
- dsi_vc_write_long_header(dsi, vc, MIPI_DSI_DCS_LONG_WRITE,
+ dsi_vc_write_long_header(dsi, vc, dsi->dsidev->channel, MIPI_DSI_DCS_LONG_WRITE,
packet_len, 0);
if (dsi->te_enabled)
@@ -3879,7 +3880,7 @@ static int _dsi_update(struct dsi_data *dsi)
return 0;
}
-static int _dsi_send_nop(struct dsi_data *dsi, int channel)
+static int _dsi_send_nop(struct dsi_data *dsi, int vc, int channel)
{
const u8 payload[] = { MIPI_DCS_NOP };
const struct mipi_dsi_msg msg = {
@@ -3891,7 +3892,7 @@ static int _dsi_send_nop(struct dsi_data *dsi, int channel)
WARN_ON(!dsi_bus_is_locked(dsi));
- return _omap_dsi_host_transfer(dsi, &msg);
+ return _omap_dsi_host_transfer(dsi, vc, &msg);
}
static int dsi_update_channel(struct omap_dss_device *dssdev, int vc)
@@ -3920,7 +3921,7 @@ static int dsi_update_channel(struct omap_dss_device *dssdev, int vc)
* updates stop working. This is probably related to DSI spec stating
* that the DSI host should transition to LP at least once per frame.
*/
- r = _dsi_send_nop(dsi, vc);
+ r = _dsi_send_nop(dsi, vc, dsi->dsidev->channel);
if (r < 0) {
DSSWARN("failed to send nop between frames: %d\n", r);
goto err;
@@ -4882,7 +4883,7 @@ static enum omap_channel dsi_get_dispc_channel(struct dsi_data *dsi)
}
}
-static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi,
+static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi, int vc,
const struct mipi_dsi_msg *msg)
{
struct omap_dss_device *dssdev = &dsi->output;
@@ -4902,15 +4903,15 @@ static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi,
case MIPI_DSI_DCS_LONG_WRITE:
case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
case MIPI_DSI_NULL_PACKET:
- r = dsi_vc_write_common(dssdev, msg);
+ r = dsi_vc_write_common(dssdev, vc, msg);
break;
case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
- r = dsi_vc_generic_read(dssdev, msg);
+ r = dsi_vc_generic_read(dssdev, vc, msg);
break;
case MIPI_DSI_DCS_READ:
- r = dsi_vc_dcs_read(dssdev, msg);
+ r = dsi_vc_dcs_read(dssdev, vc, msg);
break;
default:
r = -EINVAL;
@@ -4938,12 +4939,13 @@ static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host,
{
struct dsi_data *dsi = host_to_omap(host);
int r;
+ int vc = VC_DEFAULT;
dsi_bus_lock(dsi);
if (dsi->video_enabled) {
dsi_set_ulps_auto(dsi, false);
- r = _omap_dsi_host_transfer(dsi, msg);
+ r = _omap_dsi_host_transfer(dsi, vc, msg);
dsi_set_ulps_auto(dsi, true);
} else {
r = -EIO;
--
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