5260fb5b33
Add bkgcolor module parameter that allow to change the background color of the mixer. It can be set with an RGB value coded as 0xRRGGBB. The default value is black. Signed-off-by: Vincent Abriou <vincent.abriou@st.com> Signed-off-by: Nicolas VANHAELEWYN <nicolas.vanhaelewyn@st.com>
263 lines
6.7 KiB
C
263 lines
6.7 KiB
C
/*
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* Copyright (C) STMicroelectronics SA 2014
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* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
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* Fabien Dessenne <fabien.dessenne@st.com>
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* for STMicroelectronics.
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* License terms: GNU General Public License (GPL), version 2
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*/
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#include "sti_compositor.h"
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#include "sti_mixer.h"
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#include "sti_vtg.h"
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/* Module parameter to set the background color of the mixer */
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static unsigned int bkg_color = 0x000000;
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MODULE_PARM_DESC(bkgcolor, "Value of the background color 0xRRGGBB");
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module_param_named(bkgcolor, bkg_color, int, 0644);
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/* Identity: G=Y , B=Cb , R=Cr */
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static const u32 mixerColorSpaceMatIdentity[] = {
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0x10000000, 0x00000000, 0x10000000, 0x00001000,
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0x00000000, 0x00000000, 0x00000000, 0x00000000
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};
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/* regs offset */
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#define GAM_MIXER_CTL 0x00
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#define GAM_MIXER_BKC 0x04
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#define GAM_MIXER_BCO 0x0C
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#define GAM_MIXER_BCS 0x10
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#define GAM_MIXER_AVO 0x28
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#define GAM_MIXER_AVS 0x2C
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#define GAM_MIXER_CRB 0x34
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#define GAM_MIXER_ACT 0x38
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#define GAM_MIXER_MBP 0x3C
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#define GAM_MIXER_MX0 0x80
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/* id for depth of CRB reg */
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#define GAM_DEPTH_VID0_ID 1
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#define GAM_DEPTH_VID1_ID 2
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#define GAM_DEPTH_GDP0_ID 3
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#define GAM_DEPTH_GDP1_ID 4
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#define GAM_DEPTH_GDP2_ID 5
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#define GAM_DEPTH_GDP3_ID 6
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#define GAM_DEPTH_MASK_ID 7
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/* mask in CTL reg */
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#define GAM_CTL_BACK_MASK BIT(0)
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#define GAM_CTL_VID0_MASK BIT(1)
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#define GAM_CTL_VID1_MASK BIT(2)
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#define GAM_CTL_GDP0_MASK BIT(3)
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#define GAM_CTL_GDP1_MASK BIT(4)
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#define GAM_CTL_GDP2_MASK BIT(5)
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#define GAM_CTL_GDP3_MASK BIT(6)
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#define GAM_CTL_CURSOR_MASK BIT(9)
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const char *sti_mixer_to_str(struct sti_mixer *mixer)
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{
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switch (mixer->id) {
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case STI_MIXER_MAIN:
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return "MAIN_MIXER";
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case STI_MIXER_AUX:
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return "AUX_MIXER";
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default:
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return "<UNKNOWN MIXER>";
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}
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}
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static inline u32 sti_mixer_reg_read(struct sti_mixer *mixer, u32 reg_id)
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{
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return readl(mixer->regs + reg_id);
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}
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static inline void sti_mixer_reg_write(struct sti_mixer *mixer,
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u32 reg_id, u32 val)
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{
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writel(val, mixer->regs + reg_id);
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}
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void sti_mixer_set_background_status(struct sti_mixer *mixer, bool enable)
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{
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u32 val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL);
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val &= ~GAM_CTL_BACK_MASK;
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val |= enable;
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sti_mixer_reg_write(mixer, GAM_MIXER_CTL, val);
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}
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static void sti_mixer_set_background_color(struct sti_mixer *mixer,
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unsigned int rgb)
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{
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sti_mixer_reg_write(mixer, GAM_MIXER_BKC, rgb);
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}
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static void sti_mixer_set_background_area(struct sti_mixer *mixer,
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struct drm_display_mode *mode)
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{
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u32 ydo, xdo, yds, xds;
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ydo = sti_vtg_get_line_number(*mode, 0);
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yds = sti_vtg_get_line_number(*mode, mode->vdisplay - 1);
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xdo = sti_vtg_get_pixel_number(*mode, 0);
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xds = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1);
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sti_mixer_reg_write(mixer, GAM_MIXER_BCO, ydo << 16 | xdo);
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sti_mixer_reg_write(mixer, GAM_MIXER_BCS, yds << 16 | xds);
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}
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int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane)
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{
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int plane_id, depth = plane->zorder;
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unsigned int i;
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u32 mask, val;
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if ((depth < 1) || (depth > GAM_MIXER_NB_DEPTH_LEVEL))
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return 1;
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switch (plane->desc) {
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case STI_GDP_0:
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plane_id = GAM_DEPTH_GDP0_ID;
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break;
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case STI_GDP_1:
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plane_id = GAM_DEPTH_GDP1_ID;
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break;
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case STI_GDP_2:
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plane_id = GAM_DEPTH_GDP2_ID;
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break;
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case STI_GDP_3:
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plane_id = GAM_DEPTH_GDP3_ID;
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break;
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case STI_HQVDP_0:
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plane_id = GAM_DEPTH_VID0_ID;
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break;
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case STI_CURSOR:
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/* no need to set depth for cursor */
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return 0;
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default:
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DRM_ERROR("Unknown plane %d\n", plane->desc);
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return 1;
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}
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/* Search if a previous depth was already assigned to the plane */
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val = sti_mixer_reg_read(mixer, GAM_MIXER_CRB);
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for (i = 0; i < GAM_MIXER_NB_DEPTH_LEVEL; i++) {
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mask = GAM_DEPTH_MASK_ID << (3 * i);
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if ((val & mask) == plane_id << (3 * i))
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break;
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}
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mask |= GAM_DEPTH_MASK_ID << (3 * (depth - 1));
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plane_id = plane_id << (3 * (depth - 1));
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DRM_DEBUG_DRIVER("%s %s depth=%d\n", sti_mixer_to_str(mixer),
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sti_plane_to_str(plane), depth);
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dev_dbg(mixer->dev, "GAM_MIXER_CRB val 0x%x mask 0x%x\n",
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plane_id, mask);
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val &= ~mask;
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val |= plane_id;
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sti_mixer_reg_write(mixer, GAM_MIXER_CRB, val);
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dev_dbg(mixer->dev, "Read GAM_MIXER_CRB 0x%x\n",
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sti_mixer_reg_read(mixer, GAM_MIXER_CRB));
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return 0;
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}
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int sti_mixer_active_video_area(struct sti_mixer *mixer,
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struct drm_display_mode *mode)
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{
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u32 ydo, xdo, yds, xds;
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ydo = sti_vtg_get_line_number(*mode, 0);
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yds = sti_vtg_get_line_number(*mode, mode->vdisplay - 1);
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xdo = sti_vtg_get_pixel_number(*mode, 0);
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xds = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1);
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DRM_DEBUG_DRIVER("%s active video area xdo:%d ydo:%d xds:%d yds:%d\n",
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sti_mixer_to_str(mixer), xdo, ydo, xds, yds);
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sti_mixer_reg_write(mixer, GAM_MIXER_AVO, ydo << 16 | xdo);
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sti_mixer_reg_write(mixer, GAM_MIXER_AVS, yds << 16 | xds);
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sti_mixer_set_background_color(mixer, bkg_color);
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sti_mixer_set_background_area(mixer, mode);
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sti_mixer_set_background_status(mixer, true);
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return 0;
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}
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static u32 sti_mixer_get_plane_mask(struct sti_plane *plane)
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{
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switch (plane->desc) {
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case STI_BACK:
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return GAM_CTL_BACK_MASK;
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case STI_GDP_0:
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return GAM_CTL_GDP0_MASK;
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case STI_GDP_1:
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return GAM_CTL_GDP1_MASK;
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case STI_GDP_2:
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return GAM_CTL_GDP2_MASK;
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case STI_GDP_3:
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return GAM_CTL_GDP3_MASK;
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case STI_HQVDP_0:
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return GAM_CTL_VID0_MASK;
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case STI_CURSOR:
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return GAM_CTL_CURSOR_MASK;
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default:
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return 0;
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}
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}
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int sti_mixer_set_plane_status(struct sti_mixer *mixer,
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struct sti_plane *plane, bool status)
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{
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u32 mask, val;
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DRM_DEBUG_DRIVER("%s %s %s\n", status ? "enable" : "disable",
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sti_mixer_to_str(mixer), sti_plane_to_str(plane));
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mask = sti_mixer_get_plane_mask(plane);
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if (!mask) {
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DRM_ERROR("Can't find layer mask\n");
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return -EINVAL;
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}
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val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL);
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val &= ~mask;
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val |= status ? mask : 0;
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sti_mixer_reg_write(mixer, GAM_MIXER_CTL, val);
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return 0;
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}
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void sti_mixer_set_matrix(struct sti_mixer *mixer)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(mixerColorSpaceMatIdentity); i++)
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sti_mixer_reg_write(mixer, GAM_MIXER_MX0 + (i * 4),
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mixerColorSpaceMatIdentity[i]);
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}
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struct sti_mixer *sti_mixer_create(struct device *dev, int id,
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void __iomem *baseaddr)
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{
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struct sti_mixer *mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL);
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struct device_node *np = dev->of_node;
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dev_dbg(dev, "%s\n", __func__);
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if (!mixer) {
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DRM_ERROR("Failed to allocated memory for mixer\n");
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return NULL;
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}
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mixer->regs = baseaddr;
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mixer->dev = dev;
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mixer->id = id;
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if (of_device_is_compatible(np, "st,stih416-compositor"))
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sti_mixer_set_matrix(mixer);
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DRM_DEBUG_DRIVER("%s created. Regs=%p\n",
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sti_mixer_to_str(mixer), mixer->regs);
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return mixer;
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}
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