From: Sebastian Reichel sebastian.reichel@collabora.com
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@collabora.com Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Acked-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- .../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: