Added mipi DSI host initialization functions
Signed-off-by: Anitha Chrisanthus anitha.chrisanthus@intel.com Reviewed-by: Bob Paauwe bob.j.paauwe@intel.com --- drivers/gpu/drm/kmb/kmb_dsi.c | 59 +++++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/kmb/kmb_dsi.h | 4 +++ 2 files changed, 63 insertions(+)
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c index b5c57e1..5e2aff1 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.c +++ b/drivers/gpu/drm/kmb/kmb_dsi.c @@ -85,12 +85,59 @@ static const struct drm_connector_funcs kmb_dsi_connector_funcs = { .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, };
+static ssize_t kmb_dsi_host_transfer(struct mipi_dsi_host *host, + const struct mipi_dsi_msg *msg) +{ + return 0; +} + +static int kmb_dsi_host_attach(struct mipi_dsi_host *host, + struct mipi_dsi_device *dev) +{ + return 0; +} + +static int kmb_dsi_host_detach(struct mipi_dsi_host *host, + struct mipi_dsi_device *dev) +{ + return 0; +} + +static const struct mipi_dsi_host_ops kmb_dsi_host_ops = { + .attach = kmb_dsi_host_attach, + .detach = kmb_dsi_host_detach, + .transfer = kmb_dsi_host_transfer, +}; + +static struct kmb_dsi_host *kmb_dsi_host_init(struct kmb_dsi *kmb_dsi) +{ + struct kmb_dsi_host *host; + struct mipi_dsi_device *device; + + host = kzalloc(sizeof(*host), GFP_KERNEL); + if (!host) + return NULL; + + host->base.ops = &kmb_dsi_host_ops; + host->kmb_dsi = kmb_dsi; + + device = kzalloc(sizeof(*device), GFP_KERNEL); + if (!device) { + kfree(host); + return NULL; + } + device->host = &host->base; + host->device = device; + return host; +} + void kmb_dsi_init(struct drm_device *dev) { struct kmb_dsi *kmb_dsi; struct drm_encoder *encoder; struct kmb_connector *kmb_connector; struct drm_connector *connector; + struct kmb_dsi_host *host;
kmb_dsi = kzalloc(sizeof(*kmb_dsi), GFP_KERNEL); if (!kmb_dsi) @@ -108,7 +155,19 @@ void kmb_dsi_init(struct drm_device *dev) encoder = &kmb_dsi->base; drm_encoder_init(dev, encoder, &kmb_dsi_funcs, DRM_MODE_ENCODER_DSI, "MIPI-DSI"); + + host = kmb_dsi_host_init(kmb_dsi); + if (!host) { + drm_encoder_cleanup(encoder); + kfree(kmb_dsi); + kfree(kmb_connector); + } + drm_connector_init(dev, connector, &kmb_dsi_connector_funcs, DRM_MODE_CONNECTOR_DSI); drm_connector_helper_add(connector, &kmb_dsi_connector_helper_funcs); + + connector->encoder = encoder; + drm_connector_attach_encoder(connector, encoder); + } diff --git a/drivers/gpu/drm/kmb/kmb_dsi.h b/drivers/gpu/drm/kmb/kmb_dsi.h index 3829360..88810ee 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.h +++ b/drivers/gpu/drm/kmb/kmb_dsi.h @@ -32,19 +32,23 @@ #include "kmb_drv.h"
struct kmb_connector; +struct kmb_dsi_host;
struct kmb_dsi { struct drm_encoder base; struct kmb_connector *attached_connector; + struct kmb_dsi_host *dsi_host; };
struct kmb_dsi_host { struct mipi_dsi_host base; struct kmb_dsi *kmb_dsi; + struct mipi_dsi_device *device; };
struct kmb_connector { struct drm_connector base; + struct drm_encoder *encoder; struct drm_display_mode *fixed_mode; };