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drm/tegra: Add plane support
Add support for the B and C planes which support RGB and YUV pixel formats and can be used as overlays or hardware cursor. Currently 32-bit XRGB as well as UYVY, YUV420 and YUV422 pixel formats are advertised. Other formats should be easy to add but these are the most common ones and should cover the majority of use-cases. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Thierry Reding
parent
894752bb57
commit
f34bc78741
@ -18,26 +18,143 @@
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#include "drm.h"
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#include "dc.h"
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struct tegra_dc_window {
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fixed20_12 x;
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fixed20_12 y;
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fixed20_12 w;
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fixed20_12 h;
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unsigned int outx;
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unsigned int outy;
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unsigned int outw;
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unsigned int outh;
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unsigned int stride;
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unsigned int fmt;
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struct tegra_plane {
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struct drm_plane base;
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unsigned int index;
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};
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static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane)
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{
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return container_of(plane, struct tegra_plane, base);
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}
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static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
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struct drm_framebuffer *fb, int crtc_x,
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int crtc_y, unsigned int crtc_w,
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unsigned int crtc_h, uint32_t src_x,
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uint32_t src_y, uint32_t src_w, uint32_t src_h)
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{
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struct tegra_plane *p = to_tegra_plane(plane);
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struct tegra_dc *dc = to_tegra_dc(crtc);
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struct tegra_dc_window window;
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unsigned int i;
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memset(&window, 0, sizeof(window));
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window.src.x = src_x >> 16;
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window.src.y = src_y >> 16;
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window.src.w = src_w >> 16;
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window.src.h = src_h >> 16;
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window.dst.x = crtc_x;
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window.dst.y = crtc_y;
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window.dst.w = crtc_w;
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window.dst.h = crtc_h;
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window.format = tegra_dc_format(fb->pixel_format);
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window.bits_per_pixel = fb->bits_per_pixel;
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for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
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struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i);
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window.base[i] = gem->paddr + fb->offsets[i];
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/*
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* Tegra doesn't support different strides for U and V planes
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* so we display a warning if the user tries to display a
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* framebuffer with such a configuration.
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*/
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if (i >= 2) {
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if (fb->pitches[i] != window.stride[1])
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DRM_ERROR("unsupported UV-plane configuration\n");
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} else {
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window.stride[i] = fb->pitches[i];
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}
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}
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return tegra_dc_setup_window(dc, p->index, &window);
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}
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static int tegra_plane_disable(struct drm_plane *plane)
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{
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struct tegra_dc *dc = to_tegra_dc(plane->crtc);
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struct tegra_plane *p = to_tegra_plane(plane);
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unsigned long value;
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value = WINDOW_A_SELECT << p->index;
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tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
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value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
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value &= ~WIN_ENABLE;
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tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
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tegra_dc_writel(dc, WIN_A_UPDATE << p->index, DC_CMD_STATE_CONTROL);
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tegra_dc_writel(dc, WIN_A_ACT_REQ << p->index, DC_CMD_STATE_CONTROL);
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return 0;
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}
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static void tegra_plane_destroy(struct drm_plane *plane)
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{
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tegra_plane_disable(plane);
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drm_plane_cleanup(plane);
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}
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static const struct drm_plane_funcs tegra_plane_funcs = {
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.update_plane = tegra_plane_update,
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.disable_plane = tegra_plane_disable,
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.destroy = tegra_plane_destroy,
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};
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static const uint32_t plane_formats[] = {
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_UYVY,
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DRM_FORMAT_YUV420,
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DRM_FORMAT_YUV422,
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};
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static int tegra_dc_add_planes(struct drm_device *drm, struct tegra_dc *dc)
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{
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unsigned int i;
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int err = 0;
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for (i = 0; i < 2; i++) {
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struct tegra_plane *plane;
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plane = devm_kzalloc(drm->dev, sizeof(*plane), GFP_KERNEL);
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if (!plane)
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return -ENOMEM;
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plane->index = 1 + i;
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err = drm_plane_init(drm, &plane->base, 1 << dc->pipe,
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&tegra_plane_funcs, plane_formats,
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ARRAY_SIZE(plane_formats), false);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static const struct drm_crtc_funcs tegra_crtc_funcs = {
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.set_config = drm_crtc_helper_set_config,
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.destroy = drm_crtc_cleanup,
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};
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static void tegra_crtc_dpms(struct drm_crtc *crtc, int mode)
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static void tegra_crtc_disable(struct drm_crtc *crtc)
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{
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struct drm_device *drm = crtc->dev;
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struct drm_plane *plane;
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list_for_each_entry(plane, &drm->mode_config.plane_list, head) {
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if (plane->crtc == crtc) {
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tegra_plane_disable(plane);
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plane->crtc = NULL;
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if (plane->fb) {
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drm_framebuffer_unreference(plane->fb);
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plane->fb = NULL;
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}
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}
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}
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}
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static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc,
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@ -47,10 +164,11 @@ static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc,
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return true;
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}
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static inline u32 compute_dda_inc(fixed20_12 inf, unsigned int out, bool v,
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static inline u32 compute_dda_inc(unsigned int in, unsigned int out, bool v,
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unsigned int bpp)
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{
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fixed20_12 outf = dfixed_init(out);
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fixed20_12 inf = dfixed_init(in);
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u32 dda_inc;
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int max;
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@ -80,9 +198,10 @@ static inline u32 compute_dda_inc(fixed20_12 inf, unsigned int out, bool v,
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return dda_inc;
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}
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static inline u32 compute_initial_dda(fixed20_12 in)
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static inline u32 compute_initial_dda(unsigned int in)
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{
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return dfixed_frac(in);
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fixed20_12 inf = dfixed_init(in);
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return dfixed_frac(inf);
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}
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static int tegra_dc_set_timings(struct tegra_dc *dc,
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@ -153,6 +272,185 @@ static int tegra_crtc_setup_clk(struct drm_crtc *crtc,
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return 0;
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}
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static bool tegra_dc_format_is_yuv(unsigned int format, bool *planar)
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{
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switch (format) {
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case WIN_COLOR_DEPTH_YCbCr422:
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case WIN_COLOR_DEPTH_YUV422:
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if (planar)
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*planar = false;
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return true;
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case WIN_COLOR_DEPTH_YCbCr420P:
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case WIN_COLOR_DEPTH_YUV420P:
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case WIN_COLOR_DEPTH_YCbCr422P:
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case WIN_COLOR_DEPTH_YUV422P:
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case WIN_COLOR_DEPTH_YCbCr422R:
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case WIN_COLOR_DEPTH_YUV422R:
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case WIN_COLOR_DEPTH_YCbCr422RA:
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case WIN_COLOR_DEPTH_YUV422RA:
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if (planar)
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*planar = true;
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return true;
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}
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return false;
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}
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int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
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const struct tegra_dc_window *window)
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{
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unsigned h_offset, v_offset, h_size, v_size, h_dda, v_dda, bpp;
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unsigned long value;
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bool yuv, planar;
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/*
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* For YUV planar modes, the number of bytes per pixel takes into
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* account only the luma component and therefore is 1.
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*/
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yuv = tegra_dc_format_is_yuv(window->format, &planar);
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if (!yuv)
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bpp = window->bits_per_pixel / 8;
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else
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bpp = planar ? 1 : 2;
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value = WINDOW_A_SELECT << index;
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tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
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tegra_dc_writel(dc, window->format, DC_WIN_COLOR_DEPTH);
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tegra_dc_writel(dc, 0, DC_WIN_BYTE_SWAP);
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value = V_POSITION(window->dst.y) | H_POSITION(window->dst.x);
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tegra_dc_writel(dc, value, DC_WIN_POSITION);
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value = V_SIZE(window->dst.h) | H_SIZE(window->dst.w);
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tegra_dc_writel(dc, value, DC_WIN_SIZE);
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h_offset = window->src.x * bpp;
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v_offset = window->src.y;
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h_size = window->src.w * bpp;
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v_size = window->src.h;
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value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size);
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tegra_dc_writel(dc, value, DC_WIN_PRESCALED_SIZE);
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/*
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* For DDA computations the number of bytes per pixel for YUV planar
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* modes needs to take into account all Y, U and V components.
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*/
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if (yuv && planar)
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bpp = 2;
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h_dda = compute_dda_inc(window->src.w, window->dst.w, false, bpp);
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v_dda = compute_dda_inc(window->src.h, window->dst.h, true, bpp);
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value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda);
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tegra_dc_writel(dc, value, DC_WIN_DDA_INC);
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h_dda = compute_initial_dda(window->src.x);
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v_dda = compute_initial_dda(window->src.y);
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tegra_dc_writel(dc, h_dda, DC_WIN_H_INITIAL_DDA);
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tegra_dc_writel(dc, v_dda, DC_WIN_V_INITIAL_DDA);
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tegra_dc_writel(dc, 0, DC_WIN_UV_BUF_STRIDE);
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tegra_dc_writel(dc, 0, DC_WIN_BUF_STRIDE);
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tegra_dc_writel(dc, window->base[0], DC_WINBUF_START_ADDR);
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if (yuv && planar) {
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tegra_dc_writel(dc, window->base[1], DC_WINBUF_START_ADDR_U);
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tegra_dc_writel(dc, window->base[2], DC_WINBUF_START_ADDR_V);
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value = window->stride[1] << 16 | window->stride[0];
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tegra_dc_writel(dc, value, DC_WIN_LINE_STRIDE);
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} else {
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tegra_dc_writel(dc, window->stride[0], DC_WIN_LINE_STRIDE);
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}
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tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET);
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tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET);
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value = WIN_ENABLE;
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if (yuv) {
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/* setup default colorspace conversion coefficients */
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tegra_dc_writel(dc, 0x00f0, DC_WIN_CSC_YOF);
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tegra_dc_writel(dc, 0x012a, DC_WIN_CSC_KYRGB);
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tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KUR);
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tegra_dc_writel(dc, 0x0198, DC_WIN_CSC_KVR);
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tegra_dc_writel(dc, 0x039b, DC_WIN_CSC_KUG);
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tegra_dc_writel(dc, 0x032f, DC_WIN_CSC_KVG);
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tegra_dc_writel(dc, 0x0204, DC_WIN_CSC_KUB);
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tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KVB);
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value |= CSC_ENABLE;
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} else if (bpp < 24) {
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value |= COLOR_EXPAND;
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}
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tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
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/*
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* Disable blending and assume Window A is the bottom-most window,
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* Window C is the top-most window and Window B is in the middle.
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*/
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_NOKEY);
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_1WIN);
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switch (index) {
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case 0:
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tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_X);
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tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
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tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
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break;
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case 1:
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
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tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
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tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
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break;
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case 2:
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_Y);
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tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_3WIN_XY);
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break;
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}
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tegra_dc_writel(dc, WIN_A_UPDATE << index, DC_CMD_STATE_CONTROL);
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tegra_dc_writel(dc, WIN_A_ACT_REQ << index, DC_CMD_STATE_CONTROL);
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return 0;
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}
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unsigned int tegra_dc_format(uint32_t format)
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{
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switch (format) {
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case DRM_FORMAT_XRGB8888:
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return WIN_COLOR_DEPTH_B8G8R8A8;
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case DRM_FORMAT_RGB565:
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return WIN_COLOR_DEPTH_B5G6R5;
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case DRM_FORMAT_UYVY:
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return WIN_COLOR_DEPTH_YCbCr422;
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case DRM_FORMAT_YUV420:
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return WIN_COLOR_DEPTH_YCbCr420P;
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case DRM_FORMAT_YUV422:
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return WIN_COLOR_DEPTH_YCbCr422P;
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default:
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break;
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}
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WARN(1, "unsupported pixel format %u, using default\n", format);
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return WIN_COLOR_DEPTH_B8G8R8A8;
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}
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static int tegra_crtc_mode_set(struct drm_crtc *crtc,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted,
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@ -160,8 +458,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
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{
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struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(crtc->fb, 0);
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struct tegra_dc *dc = to_tegra_dc(crtc);
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unsigned int h_dda, v_dda, bpp;
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struct tegra_dc_window win;
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struct tegra_dc_window window;
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unsigned long div, value;
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int err;
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@ -192,81 +489,23 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
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tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
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/* setup window parameters */
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memset(&win, 0, sizeof(win));
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win.x.full = dfixed_const(0);
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win.y.full = dfixed_const(0);
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win.w.full = dfixed_const(mode->hdisplay);
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win.h.full = dfixed_const(mode->vdisplay);
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win.outx = 0;
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win.outy = 0;
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win.outw = mode->hdisplay;
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win.outh = mode->vdisplay;
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memset(&window, 0, sizeof(window));
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window.src.x = 0;
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window.src.y = 0;
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window.src.w = mode->hdisplay;
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window.src.h = mode->vdisplay;
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window.dst.x = 0;
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window.dst.y = 0;
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window.dst.w = mode->hdisplay;
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window.dst.h = mode->vdisplay;
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window.format = tegra_dc_format(crtc->fb->pixel_format);
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window.bits_per_pixel = crtc->fb->bits_per_pixel;
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window.stride[0] = crtc->fb->pitches[0];
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window.base[0] = gem->paddr;
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switch (crtc->fb->pixel_format) {
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case DRM_FORMAT_XRGB8888:
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win.fmt = WIN_COLOR_DEPTH_B8G8R8A8;
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break;
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case DRM_FORMAT_RGB565:
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win.fmt = WIN_COLOR_DEPTH_B5G6R5;
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break;
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default:
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win.fmt = WIN_COLOR_DEPTH_B8G8R8A8;
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WARN_ON(1);
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break;
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}
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bpp = crtc->fb->bits_per_pixel / 8;
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win.stride = crtc->fb->pitches[0];
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/* program window registers */
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value = WINDOW_A_SELECT;
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tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
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tegra_dc_writel(dc, win.fmt, DC_WIN_COLOR_DEPTH);
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tegra_dc_writel(dc, 0, DC_WIN_BYTE_SWAP);
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value = V_POSITION(win.outy) | H_POSITION(win.outx);
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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);
|
||||
err = tegra_dc_setup_window(dc, 0, &window);
|
||||
if (err < 0)
|
||||
dev_err(dc->dev, "failed to enable root plane\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -347,7 +586,7 @@ static void tegra_crtc_load_lut(struct drm_crtc *crtc)
|
||||
}
|
||||
|
||||
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,
|
||||
@ -588,7 +827,7 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data)
|
||||
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);
|
||||
@ -690,6 +929,10 @@ static int tegra_dc_drm_init(struct host1x_client *client,
|
||||
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)
|
||||
|
||||
@ -290,8 +290,18 @@
|
||||
#define DC_DISP_SD_HW_K_VALUES 0x4dd
|
||||
#define DC_DISP_SD_MAN_K_VALUES 0x4de
|
||||
|
||||
#define DC_WIN_CSC_YOF 0x611
|
||||
#define DC_WIN_CSC_KYRGB 0x612
|
||||
#define DC_WIN_CSC_KUR 0x613
|
||||
#define DC_WIN_CSC_KVR 0x614
|
||||
#define DC_WIN_CSC_KUG 0x615
|
||||
#define DC_WIN_CSC_KVG 0x616
|
||||
#define DC_WIN_CSC_KUB 0x617
|
||||
#define DC_WIN_CSC_KVB 0x618
|
||||
|
||||
#define DC_WIN_WIN_OPTIONS 0x700
|
||||
#define COLOR_EXPAND (1 << 6)
|
||||
#define CSC_ENABLE (1 << 18)
|
||||
#define WIN_ENABLE (1 << 30)
|
||||
|
||||
#define DC_WIN_BYTE_SWAP 0x701
|
||||
@ -359,7 +369,7 @@
|
||||
#define DC_WIN_BLEND_1WIN 0x710
|
||||
#define DC_WIN_BLEND_2WIN_X 0x711
|
||||
#define DC_WIN_BLEND_2WIN_Y 0x712
|
||||
#define DC_WIN_BLEND32WIN_XY 0x713
|
||||
#define DC_WIN_BLEND_3WIN_XY 0x713
|
||||
|
||||
#define DC_WIN_HP_FETCH_CONTROL 0x714
|
||||
|
||||
|
||||
@ -107,6 +107,30 @@ static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
|
||||
return readl(dc->regs + (reg << 2));
|
||||
}
|
||||
|
||||
struct tegra_dc_window {
|
||||
struct {
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
unsigned int w;
|
||||
unsigned int h;
|
||||
} src;
|
||||
struct {
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
unsigned int w;
|
||||
unsigned int h;
|
||||
} dst;
|
||||
unsigned int bits_per_pixel;
|
||||
unsigned int format;
|
||||
unsigned int stride[2];
|
||||
unsigned long base[3];
|
||||
};
|
||||
|
||||
/* from dc.c */
|
||||
extern unsigned int tegra_dc_format(uint32_t format);
|
||||
extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
|
||||
const struct tegra_dc_window *window);
|
||||
|
||||
struct tegra_output_ops {
|
||||
int (*enable)(struct tegra_output *output);
|
||||
int (*disable)(struct tegra_output *output);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user