#include "drm.h"
#include "dc.h"
-struct tegra_dc_window {
- fixed20_12 x;
- fixed20_12 y;
- fixed20_12 w;
- fixed20_12 h;
- unsigned int outx;
- unsigned int outy;
- unsigned int outw;
- unsigned int outh;
- unsigned int stride;
- unsigned int fmt;
+struct tegra_plane {
+ struct drm_plane base;
+ unsigned int index;
};
+static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane)
+{
+ return container_of(plane, struct tegra_plane, base);
+}
+
+static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
+ struct drm_framebuffer *fb, int crtc_x,
+ int crtc_y, unsigned int crtc_w,
+ unsigned int crtc_h, uint32_t src_x,
+ uint32_t src_y, uint32_t src_w, uint32_t src_h)
+{
+ struct tegra_plane *p = to_tegra_plane(plane);
+ struct tegra_dc *dc = to_tegra_dc(crtc);
+ struct tegra_dc_window window;
+ unsigned int i;
+
+ memset(&window, 0, sizeof(window));
+ window.src.x = src_x >> 16;
+ window.src.y = src_y >> 16;
+ window.src.w = src_w >> 16;
+ window.src.h = src_h >> 16;
+ window.dst.x = crtc_x;
+ window.dst.y = crtc_y;
+ window.dst.w = crtc_w;
+ window.dst.h = crtc_h;
+ window.format = tegra_dc_format(fb->pixel_format);
+ window.bits_per_pixel = fb->bits_per_pixel;
+
+ for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
+ struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i);
+
+ window.base[i] = gem->paddr + fb->offsets[i];
+
+ /*
+ * Tegra doesn't support different strides for U and V planes
+ * so we display a warning if the user tries to display a
+ * framebuffer with such a configuration.
+ */
+ if (i >= 2) {
+ if (fb->pitches[i] != window.stride[1])
+ DRM_ERROR("unsupported UV-plane configuration\n");
+ } else {
+ window.stride[i] = fb->pitches[i];
+ }
+ }
+
+ return tegra_dc_setup_window(dc, p->index, &window);
+}
+
+static int tegra_plane_disable(struct drm_plane *plane)
+{
+ struct tegra_dc *dc = to_tegra_dc(plane->crtc);
+ struct tegra_plane *p = to_tegra_plane(plane);
+ unsigned long value;
+
+ value = WINDOW_A_SELECT << p->index;
+ tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
+
+ value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
+ value &= ~WIN_ENABLE;
+ tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
+
+ tegra_dc_writel(dc, WIN_A_UPDATE << p->index, DC_CMD_STATE_CONTROL);
+ tegra_dc_writel(dc, WIN_A_ACT_REQ << p->index, DC_CMD_STATE_CONTROL);
+
+ return 0;
+}
+
+static void tegra_plane_destroy(struct drm_plane *plane)
+{
+ tegra_plane_disable(plane);
+ drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs tegra_plane_funcs = {
+ .update_plane = tegra_plane_update,
+ .disable_plane = tegra_plane_disable,
+ .destroy = tegra_plane_destroy,
+};
+
+static const uint32_t plane_formats[] = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_YUV420,
+ DRM_FORMAT_YUV422,
+};
+
+static int tegra_dc_add_planes(struct drm_device *drm, struct tegra_dc *dc)
+{
+ unsigned int i;
+ int err = 0;
+
+ for (i = 0; i < 2; i++) {
+ struct tegra_plane *plane;
+
+ plane = devm_kzalloc(drm->dev, sizeof(*plane), GFP_KERNEL);
+ if (!plane)
+ return -ENOMEM;
+
+ plane->index = 1 + i;
+
+ err = drm_plane_init(drm, &plane->base, 1 << dc->pipe,
+ &tegra_plane_funcs, plane_formats,
+ ARRAY_SIZE(plane_formats), false);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
static const struct drm_crtc_funcs tegra_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
.destroy = drm_crtc_cleanup,
};
-static void tegra_crtc_dpms(struct drm_crtc *crtc, int mode)
+static void tegra_crtc_disable(struct drm_crtc *crtc)
{
+ struct drm_device *drm = crtc->dev;
+ struct drm_plane *plane;
+
+ list_for_each_entry(plane, &drm->mode_config.plane_list, head) {
+ if (plane->crtc == crtc) {
+ tegra_plane_disable(plane);
+ plane->crtc = NULL;
+
+ if (plane->fb) {
+ drm_framebuffer_unreference(plane->fb);
+ plane->fb = NULL;
+ }
+ }
+ }
}
static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc,
return true;
}
-static inline u32 compute_dda_inc(fixed20_12 inf, unsigned int out, bool v,
+static inline u32 compute_dda_inc(unsigned int in, unsigned int out, bool v,
unsigned int bpp)
{
fixed20_12 outf = dfixed_init(out);
+ fixed20_12 inf = dfixed_init(in);
u32 dda_inc;
int max;
return dda_inc;
}
-static inline u32 compute_initial_dda(fixed20_12 in)
+static inline u32 compute_initial_dda(unsigned int in)
{
- return dfixed_frac(in);
+ fixed20_12 inf = dfixed_init(in);
+ return dfixed_frac(inf);
}
static int tegra_dc_set_timings(struct tegra_dc *dc,
return 0;
}
+static bool tegra_dc_format_is_yuv(unsigned int format, bool *planar)
+{
+ switch (format) {
+ case WIN_COLOR_DEPTH_YCbCr422:
+ case WIN_COLOR_DEPTH_YUV422:
+ if (planar)
+ *planar = false;
+
+ return true;
+
+ case WIN_COLOR_DEPTH_YCbCr420P:
+ case WIN_COLOR_DEPTH_YUV420P:
+ case WIN_COLOR_DEPTH_YCbCr422P:
+ case WIN_COLOR_DEPTH_YUV422P:
+ case WIN_COLOR_DEPTH_YCbCr422R:
+ case WIN_COLOR_DEPTH_YUV422R:
+ case WIN_COLOR_DEPTH_YCbCr422RA:
+ case WIN_COLOR_DEPTH_YUV422RA:
+ if (planar)
+ *planar = true;
+
+ return true;
+ }
+
+ return false;
+}
+
+int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
+ const struct tegra_dc_window *window)
+{
+ unsigned h_offset, v_offset, h_size, v_size, h_dda, v_dda, bpp;
+ unsigned long value;
+ bool yuv, planar;
+
+ /*
+ * For YUV planar modes, the number of bytes per pixel takes into
+ * account only the luma component and therefore is 1.
+ */
+ yuv = tegra_dc_format_is_yuv(window->format, &planar);
+ if (!yuv)
+ bpp = window->bits_per_pixel / 8;
+ else
+ bpp = planar ? 1 : 2;
+
+ value = WINDOW_A_SELECT << index;
+ tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
+
+ tegra_dc_writel(dc, window->format, DC_WIN_COLOR_DEPTH);
+ tegra_dc_writel(dc, 0, DC_WIN_BYTE_SWAP);
+
+ value = V_POSITION(window->dst.y) | H_POSITION(window->dst.x);
+ tegra_dc_writel(dc, value, DC_WIN_POSITION);
+
+ value = V_SIZE(window->dst.h) | H_SIZE(window->dst.w);
+ tegra_dc_writel(dc, value, DC_WIN_SIZE);
+
+ h_offset = window->src.x * bpp;
+ v_offset = window->src.y;
+ h_size = window->src.w * bpp;
+ v_size = window->src.h;
+
+ value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size);
+ tegra_dc_writel(dc, value, DC_WIN_PRESCALED_SIZE);
+
+ /*
+ * For DDA computations the number of bytes per pixel for YUV planar
+ * modes needs to take into account all Y, U and V components.
+ */
+ if (yuv && planar)
+ bpp = 2;
+
+ h_dda = compute_dda_inc(window->src.w, window->dst.w, false, bpp);
+ v_dda = compute_dda_inc(window->src.h, window->dst.h, true, bpp);
+
+ value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda);
+ tegra_dc_writel(dc, value, DC_WIN_DDA_INC);
+
+ h_dda = compute_initial_dda(window->src.x);
+ v_dda = compute_initial_dda(window->src.y);
+
+ tegra_dc_writel(dc, h_dda, DC_WIN_H_INITIAL_DDA);
+ tegra_dc_writel(dc, v_dda, DC_WIN_V_INITIAL_DDA);
+
+ tegra_dc_writel(dc, 0, DC_WIN_UV_BUF_STRIDE);
+ tegra_dc_writel(dc, 0, DC_WIN_BUF_STRIDE);
+
+ tegra_dc_writel(dc, window->base[0], DC_WINBUF_START_ADDR);
+
+ if (yuv && planar) {
+ tegra_dc_writel(dc, window->base[1], DC_WINBUF_START_ADDR_U);
+ tegra_dc_writel(dc, window->base[2], DC_WINBUF_START_ADDR_V);
+ value = window->stride[1] << 16 | window->stride[0];
+ tegra_dc_writel(dc, value, DC_WIN_LINE_STRIDE);
+ } else {
+ tegra_dc_writel(dc, window->stride[0], DC_WIN_LINE_STRIDE);
+ }
+
+ tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET);
+ tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET);
+
+ value = WIN_ENABLE;
+
+ if (yuv) {
+ /* setup default colorspace conversion coefficients */
+ tegra_dc_writel(dc, 0x00f0, DC_WIN_CSC_YOF);
+ tegra_dc_writel(dc, 0x012a, DC_WIN_CSC_KYRGB);
+ tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KUR);
+ tegra_dc_writel(dc, 0x0198, DC_WIN_CSC_KVR);
+ tegra_dc_writel(dc, 0x039b, DC_WIN_CSC_KUG);
+ tegra_dc_writel(dc, 0x032f, DC_WIN_CSC_KVG);
+ tegra_dc_writel(dc, 0x0204, DC_WIN_CSC_KUB);
+ tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KVB);
+
+ value |= CSC_ENABLE;
+ } else if (bpp < 24) {
+ value |= COLOR_EXPAND;
+ }
+
+ tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
+
+ /*
+ * Disable blending and assume Window A is the bottom-most window,
+ * Window C is the top-most window and Window B is in the middle.
+ */
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_NOKEY);
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_1WIN);
+
+ switch (index) {
+ case 0:
+ tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_X);
+ tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
+ tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
+ break;
+
+ case 1:
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
+ tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
+ tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
+ break;
+
+ case 2:
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_Y);
+ tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_3WIN_XY);
+ break;
+ }
+
+ tegra_dc_writel(dc, WIN_A_UPDATE << index, DC_CMD_STATE_CONTROL);
+ tegra_dc_writel(dc, WIN_A_ACT_REQ << index, DC_CMD_STATE_CONTROL);
+
+ return 0;
+}
+
+unsigned int tegra_dc_format(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_XRGB8888:
+ return WIN_COLOR_DEPTH_B8G8R8A8;
+
+ case DRM_FORMAT_RGB565:
+ return WIN_COLOR_DEPTH_B5G6R5;
+
+ case DRM_FORMAT_UYVY:
+ return WIN_COLOR_DEPTH_YCbCr422;
+
+ case DRM_FORMAT_YUV420:
+ return WIN_COLOR_DEPTH_YCbCr420P;
+
+ case DRM_FORMAT_YUV422:
+ return WIN_COLOR_DEPTH_YCbCr422P;
+
+ default:
+ break;
+ }
+
+ WARN(1, "unsupported pixel format %u, using default\n", format);
+ return WIN_COLOR_DEPTH_B8G8R8A8;
+}
+
static int tegra_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted,
{
struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(crtc->fb, 0);
struct tegra_dc *dc = to_tegra_dc(crtc);
- unsigned int h_dda, v_dda, bpp;
- struct tegra_dc_window win;
+ struct tegra_dc_window window;
unsigned long div, value;
int err;
tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
/* setup window parameters */
- memset(&win, 0, sizeof(win));
- win.x.full = dfixed_const(0);
- win.y.full = dfixed_const(0);
- win.w.full = dfixed_const(mode->hdisplay);
- win.h.full = dfixed_const(mode->vdisplay);
- win.outx = 0;
- win.outy = 0;
- win.outw = mode->hdisplay;
- win.outh = mode->vdisplay;
-
- switch (crtc->fb->pixel_format) {
- case DRM_FORMAT_XRGB8888:
- win.fmt = WIN_COLOR_DEPTH_B8G8R8A8;
- break;
-
- case DRM_FORMAT_RGB565:
- win.fmt = WIN_COLOR_DEPTH_B5G6R5;
- break;
-
- default:
- win.fmt = WIN_COLOR_DEPTH_B8G8R8A8;
- WARN_ON(1);
- break;
- }
-
- bpp = crtc->fb->bits_per_pixel / 8;
- win.stride = crtc->fb->pitches[0];
-
- /* program window registers */
- value = WINDOW_A_SELECT;
- tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
-
- tegra_dc_writel(dc, win.fmt, DC_WIN_COLOR_DEPTH);
- tegra_dc_writel(dc, 0, DC_WIN_BYTE_SWAP);
-
- value = V_POSITION(win.outy) | H_POSITION(win.outx);
- tegra_dc_writel(dc, value, DC_WIN_POSITION);
-
- value = V_SIZE(win.outh) | H_SIZE(win.outw);
- tegra_dc_writel(dc, value, DC_WIN_SIZE);
-
- value = V_PRESCALED_SIZE(dfixed_trunc(win.h)) |
- H_PRESCALED_SIZE(dfixed_trunc(win.w) * bpp);
- tegra_dc_writel(dc, value, DC_WIN_PRESCALED_SIZE);
-
- h_dda = compute_dda_inc(win.w, win.outw, false, bpp);
- v_dda = compute_dda_inc(win.h, win.outh, true, bpp);
-
- value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda);
- tegra_dc_writel(dc, value, DC_WIN_DDA_INC);
-
- h_dda = compute_initial_dda(win.x);
- v_dda = compute_initial_dda(win.y);
-
- tegra_dc_writel(dc, h_dda, DC_WIN_H_INITIAL_DDA);
- tegra_dc_writel(dc, v_dda, DC_WIN_V_INITIAL_DDA);
-
- tegra_dc_writel(dc, 0, DC_WIN_UV_BUF_STRIDE);
- tegra_dc_writel(dc, 0, DC_WIN_BUF_STRIDE);
-
- tegra_dc_writel(dc, fb->obj->paddr, DC_WINBUF_START_ADDR);
- tegra_dc_writel(dc, win.stride, DC_WIN_LINE_STRIDE);
- tegra_dc_writel(dc, dfixed_trunc(win.x) * bpp,
- DC_WINBUF_ADDR_H_OFFSET);
- tegra_dc_writel(dc, dfixed_trunc(win.y), DC_WINBUF_ADDR_V_OFFSET);
-
- value = WIN_ENABLE;
-
- if (bpp < 24)
- value |= COLOR_EXPAND;
-
- tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
-
- tegra_dc_writel(dc, 0xff00, DC_WIN_BLEND_NOKEY);
- tegra_dc_writel(dc, 0xff00, DC_WIN_BLEND_1WIN);
+ memset(&window, 0, sizeof(window));
+ window.src.x = 0;
+ window.src.y = 0;
+ window.src.w = mode->hdisplay;
+ window.src.h = mode->vdisplay;
+ window.dst.x = 0;
+ window.dst.y = 0;
+ window.dst.w = mode->hdisplay;
+ window.dst.h = mode->vdisplay;
+ window.format = tegra_dc_format(crtc->fb->pixel_format);
+ window.bits_per_pixel = crtc->fb->bits_per_pixel;
+ window.stride[0] = crtc->fb->pitches[0];
+ window.base[0] = gem->paddr;
+
+ err = tegra_dc_setup_window(dc, 0, &window);
+ if (err < 0)
+ dev_err(dc->dev, "failed to enable root plane\n");
return 0;
}
}
static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = {
- .dpms = tegra_crtc_dpms,
+ .disable = tegra_crtc_disable,
.mode_fixup = tegra_crtc_mode_fixup,
.mode_set = tegra_crtc_mode_set,
.prepare = tegra_crtc_prepare,
DUMP_REG(DC_WIN_BLEND_1WIN);
DUMP_REG(DC_WIN_BLEND_2WIN_X);
DUMP_REG(DC_WIN_BLEND_2WIN_Y);
- DUMP_REG(DC_WIN_BLEND32WIN_XY);
+ DUMP_REG(DC_WIN_BLEND_3WIN_XY);
DUMP_REG(DC_WIN_HP_FETCH_CONTROL);
DUMP_REG(DC_WINBUF_START_ADDR);
DUMP_REG(DC_WINBUF_START_ADDR_NS);
return err;
}
+ err = tegra_dc_add_planes(drm, dc);
+ if (err < 0)
+ return err;
+
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
err = tegra_dc_debugfs_init(dc, drm->primary);
if (err < 0)
projects / platform / kernel / linux-arm64.git / commitdiff