| /* |
| * Copyright (C) STMicroelectronics SA 2014 |
| * Authors: Benjamin Gaignard <benjamin.gaignard@st.com> |
| * Fabien Dessenne <fabien.dessenne@st.com> |
| * for STMicroelectronics. |
| * License terms: GNU General Public License (GPL), version 2 |
| */ |
| #include <linux/seq_file.h> |
| |
| #include "sti_compositor.h" |
| #include "sti_mixer.h" |
| #include "sti_vtg.h" |
| |
| /* Module parameter to set the background color of the mixer */ |
| static unsigned int bkg_color = 0x000000; |
| MODULE_PARM_DESC(bkgcolor, "Value of the background color 0xRRGGBB"); |
| module_param_named(bkgcolor, bkg_color, int, 0644); |
| |
| /* Identity: G=Y , B=Cb , R=Cr */ |
| static const u32 mixerColorSpaceMatIdentity[] = { |
| 0x10000000, 0x00000000, 0x10000000, 0x00001000, |
| 0x00000000, 0x00000000, 0x00000000, 0x00000000 |
| }; |
| |
| /* regs offset */ |
| #define GAM_MIXER_CTL 0x00 |
| #define GAM_MIXER_BKC 0x04 |
| #define GAM_MIXER_BCO 0x0C |
| #define GAM_MIXER_BCS 0x10 |
| #define GAM_MIXER_AVO 0x28 |
| #define GAM_MIXER_AVS 0x2C |
| #define GAM_MIXER_CRB 0x34 |
| #define GAM_MIXER_ACT 0x38 |
| #define GAM_MIXER_MBP 0x3C |
| #define GAM_MIXER_MX0 0x80 |
| |
| /* id for depth of CRB reg */ |
| #define GAM_DEPTH_VID0_ID 1 |
| #define GAM_DEPTH_VID1_ID 2 |
| #define GAM_DEPTH_GDP0_ID 3 |
| #define GAM_DEPTH_GDP1_ID 4 |
| #define GAM_DEPTH_GDP2_ID 5 |
| #define GAM_DEPTH_GDP3_ID 6 |
| #define GAM_DEPTH_MASK_ID 7 |
| |
| /* mask in CTL reg */ |
| #define GAM_CTL_BACK_MASK BIT(0) |
| #define GAM_CTL_VID0_MASK BIT(1) |
| #define GAM_CTL_VID1_MASK BIT(2) |
| #define GAM_CTL_GDP0_MASK BIT(3) |
| #define GAM_CTL_GDP1_MASK BIT(4) |
| #define GAM_CTL_GDP2_MASK BIT(5) |
| #define GAM_CTL_GDP3_MASK BIT(6) |
| #define GAM_CTL_CURSOR_MASK BIT(9) |
| |
| const char *sti_mixer_to_str(struct sti_mixer *mixer) |
| { |
| switch (mixer->id) { |
| case STI_MIXER_MAIN: |
| return "MAIN_MIXER"; |
| case STI_MIXER_AUX: |
| return "AUX_MIXER"; |
| default: |
| return "<UNKNOWN MIXER>"; |
| } |
| } |
| |
| static inline u32 sti_mixer_reg_read(struct sti_mixer *mixer, u32 reg_id) |
| { |
| return readl(mixer->regs + reg_id); |
| } |
| |
| static inline void sti_mixer_reg_write(struct sti_mixer *mixer, |
| u32 reg_id, u32 val) |
| { |
| writel(val, mixer->regs + reg_id); |
| } |
| |
| #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \ |
| sti_mixer_reg_read(mixer, reg)) |
| |
| static void mixer_dbg_ctl(struct seq_file *s, int val) |
| { |
| unsigned int i; |
| int count = 0; |
| char *const disp_layer[] = {"BKG", "VID0", "VID1", "GDP0", |
| "GDP1", "GDP2", "GDP3"}; |
| |
| seq_puts(s, "\tEnabled: "); |
| for (i = 0; i < 7; i++) { |
| if (val & 1) { |
| seq_printf(s, "%s ", disp_layer[i]); |
| count++; |
| } |
| val = val >> 1; |
| } |
| |
| val = val >> 2; |
| if (val & 1) { |
| seq_puts(s, "CURS "); |
| count++; |
| } |
| if (!count) |
| seq_puts(s, "Nothing"); |
| } |
| |
| static void mixer_dbg_crb(struct seq_file *s, int val) |
| { |
| int i; |
| |
| seq_puts(s, "\tDepth: "); |
| for (i = 0; i < GAM_MIXER_NB_DEPTH_LEVEL; i++) { |
| switch (val & GAM_DEPTH_MASK_ID) { |
| case GAM_DEPTH_VID0_ID: |
| seq_puts(s, "VID0"); |
| break; |
| case GAM_DEPTH_VID1_ID: |
| seq_puts(s, "VID1"); |
| break; |
| case GAM_DEPTH_GDP0_ID: |
| seq_puts(s, "GDP0"); |
| break; |
| case GAM_DEPTH_GDP1_ID: |
| seq_puts(s, "GDP1"); |
| break; |
| case GAM_DEPTH_GDP2_ID: |
| seq_puts(s, "GDP2"); |
| break; |
| case GAM_DEPTH_GDP3_ID: |
| seq_puts(s, "GDP3"); |
| break; |
| default: |
| seq_puts(s, "---"); |
| } |
| |
| if (i < GAM_MIXER_NB_DEPTH_LEVEL - 1) |
| seq_puts(s, " < "); |
| val = val >> 3; |
| } |
| } |
| |
| static void mixer_dbg_mxn(struct seq_file *s, void *addr) |
| { |
| int i; |
| |
| for (i = 1; i < 8; i++) |
| seq_printf(s, "-0x%08X", (int)readl(addr + i * 4)); |
| } |
| |
| static int mixer_dbg_show(struct seq_file *s, void *arg) |
| { |
| struct drm_info_node *node = s->private; |
| struct sti_mixer *mixer = (struct sti_mixer *)node->info_ent->data; |
| |
| seq_printf(s, "%s: (vaddr = 0x%p)", |
| sti_mixer_to_str(mixer), mixer->regs); |
| |
| DBGFS_DUMP(GAM_MIXER_CTL); |
| mixer_dbg_ctl(s, sti_mixer_reg_read(mixer, GAM_MIXER_CTL)); |
| DBGFS_DUMP(GAM_MIXER_BKC); |
| DBGFS_DUMP(GAM_MIXER_BCO); |
| DBGFS_DUMP(GAM_MIXER_BCS); |
| DBGFS_DUMP(GAM_MIXER_AVO); |
| DBGFS_DUMP(GAM_MIXER_AVS); |
| DBGFS_DUMP(GAM_MIXER_CRB); |
| mixer_dbg_crb(s, sti_mixer_reg_read(mixer, GAM_MIXER_CRB)); |
| DBGFS_DUMP(GAM_MIXER_ACT); |
| DBGFS_DUMP(GAM_MIXER_MBP); |
| DBGFS_DUMP(GAM_MIXER_MX0); |
| mixer_dbg_mxn(s, mixer->regs + GAM_MIXER_MX0); |
| seq_puts(s, "\n"); |
| |
| return 0; |
| } |
| |
| static struct drm_info_list mixer0_debugfs_files[] = { |
| { "mixer_main", mixer_dbg_show, 0, NULL }, |
| }; |
| |
| static struct drm_info_list mixer1_debugfs_files[] = { |
| { "mixer_aux", mixer_dbg_show, 0, NULL }, |
| }; |
| |
| int sti_mixer_debugfs_init(struct sti_mixer *mixer, struct drm_minor *minor) |
| { |
| unsigned int i; |
| struct drm_info_list *mixer_debugfs_files; |
| int nb_files; |
| |
| switch (mixer->id) { |
| case STI_MIXER_MAIN: |
| mixer_debugfs_files = mixer0_debugfs_files; |
| nb_files = ARRAY_SIZE(mixer0_debugfs_files); |
| break; |
| case STI_MIXER_AUX: |
| mixer_debugfs_files = mixer1_debugfs_files; |
| nb_files = ARRAY_SIZE(mixer1_debugfs_files); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < nb_files; i++) |
| mixer_debugfs_files[i].data = mixer; |
| |
| return drm_debugfs_create_files(mixer_debugfs_files, |
| nb_files, |
| minor->debugfs_root, minor); |
| } |
| |
| void sti_mixer_set_background_status(struct sti_mixer *mixer, bool enable) |
| { |
| u32 val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL); |
| |
| val &= ~GAM_CTL_BACK_MASK; |
| val |= enable; |
| sti_mixer_reg_write(mixer, GAM_MIXER_CTL, val); |
| } |
| |
| static void sti_mixer_set_background_color(struct sti_mixer *mixer, |
| unsigned int rgb) |
| { |
| sti_mixer_reg_write(mixer, GAM_MIXER_BKC, rgb); |
| } |
| |
| static void sti_mixer_set_background_area(struct sti_mixer *mixer, |
| struct drm_display_mode *mode) |
| { |
| u32 ydo, xdo, yds, xds; |
| |
| ydo = sti_vtg_get_line_number(*mode, 0); |
| yds = sti_vtg_get_line_number(*mode, mode->vdisplay - 1); |
| xdo = sti_vtg_get_pixel_number(*mode, 0); |
| xds = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1); |
| |
| sti_mixer_reg_write(mixer, GAM_MIXER_BCO, ydo << 16 | xdo); |
| sti_mixer_reg_write(mixer, GAM_MIXER_BCS, yds << 16 | xds); |
| } |
| |
| int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane) |
| { |
| int plane_id, depth = plane->drm_plane.state->normalized_zpos; |
| unsigned int i; |
| u32 mask, val; |
| |
| switch (plane->desc) { |
| case STI_GDP_0: |
| plane_id = GAM_DEPTH_GDP0_ID; |
| break; |
| case STI_GDP_1: |
| plane_id = GAM_DEPTH_GDP1_ID; |
| break; |
| case STI_GDP_2: |
| plane_id = GAM_DEPTH_GDP2_ID; |
| break; |
| case STI_GDP_3: |
| plane_id = GAM_DEPTH_GDP3_ID; |
| break; |
| case STI_HQVDP_0: |
| plane_id = GAM_DEPTH_VID0_ID; |
| break; |
| case STI_CURSOR: |
| /* no need to set depth for cursor */ |
| return 0; |
| default: |
| DRM_ERROR("Unknown plane %d\n", plane->desc); |
| return 1; |
| } |
| |
| /* Search if a previous depth was already assigned to the plane */ |
| val = sti_mixer_reg_read(mixer, GAM_MIXER_CRB); |
| for (i = 0; i < GAM_MIXER_NB_DEPTH_LEVEL; i++) { |
| mask = GAM_DEPTH_MASK_ID << (3 * i); |
| if ((val & mask) == plane_id << (3 * i)) |
| break; |
| } |
| |
| mask |= GAM_DEPTH_MASK_ID << (3 * depth); |
| plane_id = plane_id << (3 * depth); |
| |
| DRM_DEBUG_DRIVER("%s %s depth=%d\n", sti_mixer_to_str(mixer), |
| sti_plane_to_str(plane), depth); |
| dev_dbg(mixer->dev, "GAM_MIXER_CRB val 0x%x mask 0x%x\n", |
| plane_id, mask); |
| |
| val &= ~mask; |
| val |= plane_id; |
| sti_mixer_reg_write(mixer, GAM_MIXER_CRB, val); |
| |
| dev_dbg(mixer->dev, "Read GAM_MIXER_CRB 0x%x\n", |
| sti_mixer_reg_read(mixer, GAM_MIXER_CRB)); |
| return 0; |
| } |
| |
| int sti_mixer_active_video_area(struct sti_mixer *mixer, |
| struct drm_display_mode *mode) |
| { |
| u32 ydo, xdo, yds, xds; |
| |
| ydo = sti_vtg_get_line_number(*mode, 0); |
| yds = sti_vtg_get_line_number(*mode, mode->vdisplay - 1); |
| xdo = sti_vtg_get_pixel_number(*mode, 0); |
| xds = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1); |
| |
| DRM_DEBUG_DRIVER("%s active video area xdo:%d ydo:%d xds:%d yds:%d\n", |
| sti_mixer_to_str(mixer), xdo, ydo, xds, yds); |
| sti_mixer_reg_write(mixer, GAM_MIXER_AVO, ydo << 16 | xdo); |
| sti_mixer_reg_write(mixer, GAM_MIXER_AVS, yds << 16 | xds); |
| |
| sti_mixer_set_background_color(mixer, bkg_color); |
| |
| sti_mixer_set_background_area(mixer, mode); |
| sti_mixer_set_background_status(mixer, true); |
| return 0; |
| } |
| |
| static u32 sti_mixer_get_plane_mask(struct sti_plane *plane) |
| { |
| switch (plane->desc) { |
| case STI_BACK: |
| return GAM_CTL_BACK_MASK; |
| case STI_GDP_0: |
| return GAM_CTL_GDP0_MASK; |
| case STI_GDP_1: |
| return GAM_CTL_GDP1_MASK; |
| case STI_GDP_2: |
| return GAM_CTL_GDP2_MASK; |
| case STI_GDP_3: |
| return GAM_CTL_GDP3_MASK; |
| case STI_HQVDP_0: |
| return GAM_CTL_VID0_MASK; |
| case STI_CURSOR: |
| return GAM_CTL_CURSOR_MASK; |
| default: |
| return 0; |
| } |
| } |
| |
| int sti_mixer_set_plane_status(struct sti_mixer *mixer, |
| struct sti_plane *plane, bool status) |
| { |
| u32 mask, val; |
| |
| DRM_DEBUG_DRIVER("%s %s %s\n", status ? "enable" : "disable", |
| sti_mixer_to_str(mixer), sti_plane_to_str(plane)); |
| |
| mask = sti_mixer_get_plane_mask(plane); |
| if (!mask) { |
| DRM_ERROR("Can't find layer mask\n"); |
| return -EINVAL; |
| } |
| |
| val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL); |
| val &= ~mask; |
| val |= status ? mask : 0; |
| sti_mixer_reg_write(mixer, GAM_MIXER_CTL, val); |
| |
| return 0; |
| } |
| |
| void sti_mixer_set_matrix(struct sti_mixer *mixer) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < ARRAY_SIZE(mixerColorSpaceMatIdentity); i++) |
| sti_mixer_reg_write(mixer, GAM_MIXER_MX0 + (i * 4), |
| mixerColorSpaceMatIdentity[i]); |
| } |
| |
| struct sti_mixer *sti_mixer_create(struct device *dev, |
| struct drm_device *drm_dev, |
| int id, |
| void __iomem *baseaddr) |
| { |
| struct sti_mixer *mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL); |
| struct device_node *np = dev->of_node; |
| |
| dev_dbg(dev, "%s\n", __func__); |
| if (!mixer) { |
| DRM_ERROR("Failed to allocated memory for mixer\n"); |
| return NULL; |
| } |
| mixer->regs = baseaddr; |
| mixer->dev = dev; |
| mixer->id = id; |
| |
| if (of_device_is_compatible(np, "st,stih416-compositor")) |
| sti_mixer_set_matrix(mixer); |
| |
| DRM_DEBUG_DRIVER("%s created. Regs=%p\n", |
| sti_mixer_to_str(mixer), mixer->regs); |
| |
| return mixer; |
| } |