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path: root/drivers/gpu/drm/rcar-du/rcar_du_kms.c
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Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_kms.c')
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_kms.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
new file mode 100644
index 000000000000..d30c2e29bee2
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -0,0 +1,265 @@
+/*
+ * rcar_du_kms.c -- R-Car Display Unit Mode Setting
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include "rcar_du_crtc.h"
+#include "rcar_du_drv.h"
+#include "rcar_du_kms.h"
+#include "rcar_du_lvds.h"
+#include "rcar_du_regs.h"
+#include "rcar_du_vga.h"
+
+/* -----------------------------------------------------------------------------
+ * Format helpers
+ */
+
+static const struct rcar_du_format_info rcar_du_format_infos[] = {
+ {
+ .fourcc = DRM_FORMAT_RGB565,
+ .bpp = 16,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_ARGB1555,
+ .bpp = 16,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_XRGB1555,
+ .bpp = 16,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_XRGB8888,
+ .bpp = 32,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP,
+ .edf = PnDDCR4_EDF_RGB888,
+ }, {
+ .fourcc = DRM_FORMAT_ARGB8888,
+ .bpp = 32,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_16BPP,
+ .edf = PnDDCR4_EDF_ARGB8888,
+ }, {
+ .fourcc = DRM_FORMAT_UYVY,
+ .bpp = 16,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_YUYV,
+ .bpp = 16,
+ .planes = 1,
+ .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_NV12,
+ .bpp = 12,
+ .planes = 2,
+ .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ .fourcc = DRM_FORMAT_NV21,
+ .bpp = 12,
+ .planes = 2,
+ .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
+ .edf = PnDDCR4_EDF_NONE,
+ }, {
+ /* In YUV 4:2:2, only NV16 is supported (NV61 isn't) */
+ .fourcc = DRM_FORMAT_NV16,
+ .bpp = 16,
+ .planes = 2,
+ .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC,
+ .edf = PnDDCR4_EDF_NONE,
+ },
+};
+
+const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(rcar_du_format_infos); ++i) {
+ if (rcar_du_format_infos[i].fourcc == fourcc)
+ return &rcar_du_format_infos[i];
+ }
+
+ return NULL;
+}
+
+/* -----------------------------------------------------------------------------
+ * Common connector and encoder functions
+ */
+
+struct drm_encoder *
+rcar_du_connector_best_encoder(struct drm_connector *connector)
+{
+ struct rcar_du_connector *rcon = to_rcar_connector(connector);
+
+ return &rcon->encoder->encoder;
+}
+
+void rcar_du_encoder_mode_prepare(struct drm_encoder *encoder)
+{
+}
+
+void rcar_du_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
+
+ rcar_du_crtc_route_output(encoder->crtc, renc->output);
+}
+
+void rcar_du_encoder_mode_commit(struct drm_encoder *encoder)
+{
+}
+
+/* -----------------------------------------------------------------------------
+ * Frame buffer
+ */
+
+int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+ unsigned int align;
+
+ /* The pitch must be aligned to a 16 pixels boundary. */
+ align = 16 * args->bpp / 8;
+ args->pitch = roundup(max(args->pitch, min_pitch), align);
+
+ return drm_gem_cma_dumb_create(file, dev, args);
+}
+
+static struct drm_framebuffer *
+rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+ struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ const struct rcar_du_format_info *format;
+ unsigned int align;
+
+ format = rcar_du_format_info(mode_cmd->pixel_format);
+ if (format == NULL) {
+ dev_dbg(dev->dev, "unsupported pixel format %08x\n",
+ mode_cmd->pixel_format);
+ return ERR_PTR(-EINVAL);
+ }
+
+ align = 16 * format->bpp / 8;
+
+ if (mode_cmd->pitches[0] & (align - 1) ||
+ mode_cmd->pitches[0] >= 8192) {
+ dev_dbg(dev->dev, "invalid pitch value %u\n",
+ mode_cmd->pitches[0]);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (format->planes == 2) {
+ if (mode_cmd->pitches[1] != mode_cmd->pitches[0]) {
+ dev_dbg(dev->dev,
+ "luma and chroma pitches do not match\n");
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
+ return drm_fb_cma_create(dev, file_priv, mode_cmd);
+}
+
+static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
+ .fb_create = rcar_du_fb_create,
+};
+
+int rcar_du_modeset_init(struct rcar_du_device *rcdu)
+{
+ struct drm_device *dev = rcdu->ddev;
+ struct drm_encoder *encoder;
+ unsigned int i;
+ int ret;
+
+ drm_mode_config_init(rcdu->ddev);
+
+ rcdu->ddev->mode_config.min_width = 0;
+ rcdu->ddev->mode_config.min_height = 0;
+ rcdu->ddev->mode_config.max_width = 4095;
+ rcdu->ddev->mode_config.max_height = 2047;
+ rcdu->ddev->mode_config.funcs = &rcar_du_mode_config_funcs;
+
+ ret = rcar_du_plane_init(rcdu);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(rcdu->crtcs); ++i) {
+ ret = rcar_du_crtc_create(rcdu, i);
+ if (ret < 0)
+ return ret;
+ }
+
+ rcdu->used_crtcs = 0;
+ rcdu->num_crtcs = i;
+
+ for (i = 0; i < rcdu->pdata->num_encoders; ++i) {
+ const struct rcar_du_encoder_data *pdata =
+ &rcdu->pdata->encoders[i];
+
+ if (pdata->output >= ARRAY_SIZE(rcdu->crtcs)) {
+ dev_warn(rcdu->dev,
+ "encoder %u references unexisting output %u, skipping\n",
+ i, pdata->output);
+ continue;
+ }
+
+ switch (pdata->encoder) {
+ case RCAR_DU_ENCODER_VGA:
+ rcar_du_vga_init(rcdu, &pdata->u.vga, pdata->output);
+ break;
+
+ case RCAR_DU_ENCODER_LVDS:
+ rcar_du_lvds_init(rcdu, &pdata->u.lvds, pdata->output);
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ /* Set the possible CRTCs and possible clones. All encoders can be
+ * driven by the CRTC associated with the output they're connected to,
+ * as well as by CRTC 0.
+ */
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
+
+ encoder->possible_crtcs = (1 << 0) | (1 << renc->output);
+ encoder->possible_clones = 1 << 0;
+ }
+
+ ret = rcar_du_plane_register(rcdu);
+ if (ret < 0)
+ return ret;
+
+ drm_kms_helper_poll_init(rcdu->ddev);
+
+ drm_helper_disable_unused_functions(rcdu->ddev);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 05:43:05 +0300