| Message ID | 20201105120333.947408-8-tomi.valkeinen@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Convert DSI code to use drm_mipi_dsi and drm_panel | expand |
Hi Tomi and Sebastian, Thank you for the patch. On Thu, Nov 05, 2020 at 02:02:44PM +0200, Tomi Valkeinen wrote: > 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> There are a few very minor comments I would have made below, but as this file is going away later in this series, it doesn't matter. 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:
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: