From: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
This converts the panel-dsi-cm driver to use the transfer
API instead of specific functions, so that the specific
functions can be unexported and squashed into the generic
transfer function.
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
.../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 132 +++++++++++++-----
1 file changed, 95 insertions(+), 37 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index b8f3a7aacbf4..8b2e80129bd8 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -140,45 +140,61 @@ static void hw_guard_wait(struct panel_drv_data *ddata)
static int dsicm_dcs_read_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 *data)
{
struct omap_dss_device *src = ddata->src;
- int r;
- u8 buf[1];
-
- r = src->ops->dsi.dcs_read(src, ddata->channel, dcs_cmd, buf, 1);
-
- if (r < 0)
- return r;
-
- *data = buf[0];
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_DCS_READ,
+ .tx_len = 1,
+ .tx_buf = &dcs_cmd,
+ .rx_len = 1,
+ .rx_buf = data
+ };
- return 0;
+ return src->ops->dsi.transfer(src, &msg);
}
static int dsicm_dcs_write_0(struct panel_drv_data *ddata, u8 dcs_cmd)
{
struct omap_dss_device *src = ddata->src;
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_DCS_SHORT_WRITE,
+ .tx_buf = &dcs_cmd,
+ .tx_len = 1,
+ };
- return src->ops->dsi.dcs_write(src, ddata->channel, &dcs_cmd, 1);
+ return src->ops->dsi.transfer(src, &msg);
}
static int dsicm_dcs_write_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 param)
{
struct omap_dss_device *src = ddata->src;
- u8 buf[2] = { dcs_cmd, param };
+ const u8 buf[] = { dcs_cmd, param };
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_DCS_SHORT_WRITE_PARAM,
+ .tx_buf = &buf,
+ .tx_len = 2,
+ };
- return src->ops->dsi.dcs_write(src, ddata->channel, buf, 2);
+ return src->ops->dsi.transfer(src, &msg);
}
static int dsicm_sleep_in(struct panel_drv_data *ddata)
{
struct omap_dss_device *src = ddata->src;
- u8 cmd;
int r;
+ const u8 cmd = MIPI_DCS_ENTER_SLEEP_MODE;
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_DCS_SHORT_WRITE,
+ .tx_buf = &cmd,
+ .tx_len = 1,
+ };
hw_guard_wait(ddata);
- cmd = MIPI_DCS_ENTER_SLEEP_MODE;
- r = src->ops->dsi.dcs_write_nosync(src, ddata->channel, &cmd, 1);
+ r = src->ops->dsi.transfer(src, &msg);
if (r)
return r;
@@ -233,28 +249,43 @@ static int dsicm_set_update_window(struct panel_drv_data *ddata,
u16 y1 = y;
u16 y2 = y + h - 1;
- u8 buf[5];
- buf[0] = MIPI_DCS_SET_COLUMN_ADDRESS;
- buf[1] = (x1 >> 8) & 0xff;
- buf[2] = (x1 >> 0) & 0xff;
- buf[3] = (x2 >> 8) & 0xff;
- buf[4] = (x2 >> 0) & 0xff;
+ const u8 paramX[] = {
+ MIPI_DCS_SET_COLUMN_ADDRESS,
+ (x1 >> 8) & 0xff,
+ (x1 >> 0) & 0xff,
+ (x2 >> 8) & 0xff,
+ (x2 >> 0) & 0xff,
+ };
- r = src->ops->dsi.dcs_write_nosync(src, ddata->channel, buf, sizeof(buf));
- if (r)
- return r;
+ const struct mipi_dsi_msg msgX = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_GENERIC_LONG_WRITE,
+ .tx_buf = paramX,
+ .tx_len = 5,
+ };
+
+ const u8 paramY[] = {
+ MIPI_DCS_SET_PAGE_ADDRESS,
+ (y1 >> 8) & 0xff,
+ (y1 >> 0) & 0xff,
+ (y2 >> 8) & 0xff,
+ (y2 >> 0) & 0xff,
+ };
- buf[0] = MIPI_DCS_SET_PAGE_ADDRESS;
- buf[1] = (y1 >> 8) & 0xff;
- buf[2] = (y1 >> 0) & 0xff;
- buf[3] = (y2 >> 8) & 0xff;
- buf[4] = (y2 >> 0) & 0xff;
+ const struct mipi_dsi_msg msgY = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_GENERIC_LONG_WRITE,
+ .tx_buf = paramY,
+ .tx_len = 5,
+ };
- r = src->ops->dsi.dcs_write_nosync(src, ddata->channel, buf, sizeof(buf));
+ r = src->ops->dsi.transfer(src, &msgX);
if (r)
return r;
- src->ops->dsi.bta_sync(src, ddata->channel);
+ r = src->ops->dsi.transfer(src, &msgY);
+ if (r)
+ return r;
return r;
}
@@ -991,6 +1022,27 @@ static int dsicm_get_te(struct omap_dss_device *dssdev)
return r;
}
+static int dsicm_set_max_rx_packet_size(struct omap_dss_device *dssdev,
+ u16 size)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *src = ddata->src;
+
+ const u8 buf[] = {
+ size & 0xff,
+ size >> 8 & 0xff,
+ };
+
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
+ .tx_buf = buf,
+ .tx_len = 2,
+ };
+
+ return src->ops->dsi.transfer(src, &msg);
+}
+
static int dsicm_memory_read(struct omap_dss_device *dssdev,
void *buf, size_t size,
u16 x, u16 y, u16 w, u16 h)
@@ -1031,17 +1083,23 @@ static int dsicm_memory_read(struct omap_dss_device *dssdev,
dsicm_set_update_window(ddata, x, y, w, h);
- r = src->ops->dsi.set_max_rx_packet_size(src, ddata->channel, plen);
+ r = dsicm_set_max_rx_packet_size(dssdev, plen);
if (r)
goto err2;
while (buf_used < size) {
u8 dcs_cmd = first ? 0x2e : 0x3e;
+ const struct mipi_dsi_msg msg = {
+ .channel = ddata->channel,
+ .type = MIPI_DSI_DCS_READ,
+ .tx_buf = &dcs_cmd,
+ .tx_len = 1,
+ .rx_buf = buf + buf_used,
+ .rx_len = size - buf_used,
+ };
first = 0;
- r = src->ops->dsi.dcs_read(src, ddata->channel, dcs_cmd,
- buf + buf_used, size - buf_used);
-
+ r = src->ops->dsi.transfer(src, &msg);
if (r < 0) {
dev_err(dssdev->dev, "read error\n");
goto err3;
@@ -1065,7 +1123,7 @@ static int dsicm_memory_read(struct omap_dss_device *dssdev,
r = buf_used;
err3:
- src->ops->dsi.set_max_rx_packet_size(src, ddata->channel, 1);
+ dsicm_set_max_rx_packet_size(dssdev, 1);
err2:
src->ops->dsi.bus_unlock(src);
err1:
--
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