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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) STMicroelectronics SA 2014
- * Authors: Benjamin Gaignard <[email protected]>
- * Fabien Dessenne <[email protected]>
- * for STMicroelectronics.
- */
- #include <linux/dma-mapping.h>
- #include <linux/of.h>
- #include <linux/seq_file.h>
- #include <drm/drm_atomic.h>
- #include <drm/drm_device.h>
- #include <drm/drm_fb_dma_helper.h>
- #include <drm/drm_fourcc.h>
- #include <drm/drm_framebuffer.h>
- #include <drm/drm_gem_dma_helper.h>
- #include "sti_compositor.h"
- #include "sti_gdp.h"
- #include "sti_plane.h"
- #include "sti_vtg.h"
- #define ALPHASWITCH BIT(6)
- #define ENA_COLOR_FILL BIT(8)
- #define BIGNOTLITTLE BIT(23)
- #define WAIT_NEXT_VSYNC BIT(31)
- /* GDP color formats */
- #define GDP_RGB565 0x00
- #define GDP_RGB888 0x01
- #define GDP_RGB888_32 0x02
- #define GDP_XBGR8888 (GDP_RGB888_32 | BIGNOTLITTLE | ALPHASWITCH)
- #define GDP_ARGB8565 0x04
- #define GDP_ARGB8888 0x05
- #define GDP_ABGR8888 (GDP_ARGB8888 | BIGNOTLITTLE | ALPHASWITCH)
- #define GDP_ARGB1555 0x06
- #define GDP_ARGB4444 0x07
- #define GDP2STR(fmt) { GDP_ ## fmt, #fmt }
- static struct gdp_format_to_str {
- int format;
- char name[20];
- } gdp_format_to_str[] = {
- GDP2STR(RGB565),
- GDP2STR(RGB888),
- GDP2STR(RGB888_32),
- GDP2STR(XBGR8888),
- GDP2STR(ARGB8565),
- GDP2STR(ARGB8888),
- GDP2STR(ABGR8888),
- GDP2STR(ARGB1555),
- GDP2STR(ARGB4444)
- };
- #define GAM_GDP_CTL_OFFSET 0x00
- #define GAM_GDP_AGC_OFFSET 0x04
- #define GAM_GDP_VPO_OFFSET 0x0C
- #define GAM_GDP_VPS_OFFSET 0x10
- #define GAM_GDP_PML_OFFSET 0x14
- #define GAM_GDP_PMP_OFFSET 0x18
- #define GAM_GDP_SIZE_OFFSET 0x1C
- #define GAM_GDP_NVN_OFFSET 0x24
- #define GAM_GDP_KEY1_OFFSET 0x28
- #define GAM_GDP_KEY2_OFFSET 0x2C
- #define GAM_GDP_PPT_OFFSET 0x34
- #define GAM_GDP_CML_OFFSET 0x3C
- #define GAM_GDP_MST_OFFSET 0x68
- #define GAM_GDP_ALPHARANGE_255 BIT(5)
- #define GAM_GDP_AGC_FULL_RANGE 0x00808080
- #define GAM_GDP_PPT_IGNORE (BIT(1) | BIT(0))
- #define GAM_GDP_SIZE_MAX_WIDTH 3840
- #define GAM_GDP_SIZE_MAX_HEIGHT 2160
- #define GDP_NODE_NB_BANK 2
- #define GDP_NODE_PER_FIELD 2
- struct sti_gdp_node {
- u32 gam_gdp_ctl;
- u32 gam_gdp_agc;
- u32 reserved1;
- u32 gam_gdp_vpo;
- u32 gam_gdp_vps;
- u32 gam_gdp_pml;
- u32 gam_gdp_pmp;
- u32 gam_gdp_size;
- u32 reserved2;
- u32 gam_gdp_nvn;
- u32 gam_gdp_key1;
- u32 gam_gdp_key2;
- u32 reserved3;
- u32 gam_gdp_ppt;
- u32 reserved4;
- u32 gam_gdp_cml;
- };
- struct sti_gdp_node_list {
- struct sti_gdp_node *top_field;
- dma_addr_t top_field_paddr;
- struct sti_gdp_node *btm_field;
- dma_addr_t btm_field_paddr;
- };
- /*
- * STI GDP structure
- *
- * @sti_plane: sti_plane structure
- * @dev: driver device
- * @regs: gdp registers
- * @clk_pix: pixel clock for the current gdp
- * @clk_main_parent: gdp parent clock if main path used
- * @clk_aux_parent: gdp parent clock if aux path used
- * @vtg_field_nb: callback for VTG FIELD (top or bottom) notification
- * @is_curr_top: true if the current node processed is the top field
- * @node_list: array of node list
- * @vtg: registered vtg
- */
- struct sti_gdp {
- struct sti_plane plane;
- struct device *dev;
- void __iomem *regs;
- struct clk *clk_pix;
- struct clk *clk_main_parent;
- struct clk *clk_aux_parent;
- struct notifier_block vtg_field_nb;
- bool is_curr_top;
- struct sti_gdp_node_list node_list[GDP_NODE_NB_BANK];
- struct sti_vtg *vtg;
- };
- #define to_sti_gdp(x) container_of(x, struct sti_gdp, plane)
- static const uint32_t gdp_supported_formats[] = {
- DRM_FORMAT_XRGB8888,
- DRM_FORMAT_XBGR8888,
- DRM_FORMAT_ARGB8888,
- DRM_FORMAT_ABGR8888,
- DRM_FORMAT_ARGB4444,
- DRM_FORMAT_ARGB1555,
- DRM_FORMAT_RGB565,
- DRM_FORMAT_RGB888,
- };
- #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
- readl(gdp->regs + reg ## _OFFSET))
- static void gdp_dbg_ctl(struct seq_file *s, int val)
- {
- int i;
- seq_puts(s, "\tColor:");
- for (i = 0; i < ARRAY_SIZE(gdp_format_to_str); i++) {
- if (gdp_format_to_str[i].format == (val & 0x1F)) {
- seq_puts(s, gdp_format_to_str[i].name);
- break;
- }
- }
- if (i == ARRAY_SIZE(gdp_format_to_str))
- seq_puts(s, "<UNKNOWN>");
- seq_printf(s, "\tWaitNextVsync:%d", val & WAIT_NEXT_VSYNC ? 1 : 0);
- }
- static void gdp_dbg_vpo(struct seq_file *s, int val)
- {
- seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
- }
- static void gdp_dbg_vps(struct seq_file *s, int val)
- {
- seq_printf(s, "\txds:%4d\tyds:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
- }
- static void gdp_dbg_size(struct seq_file *s, int val)
- {
- seq_printf(s, "\t%d x %d", val & 0xFFFF, (val >> 16) & 0xFFFF);
- }
- static void gdp_dbg_nvn(struct seq_file *s, struct sti_gdp *gdp, int val)
- {
- void *base = NULL;
- unsigned int i;
- for (i = 0; i < GDP_NODE_NB_BANK; i++) {
- if (gdp->node_list[i].top_field_paddr == val) {
- base = gdp->node_list[i].top_field;
- break;
- }
- if (gdp->node_list[i].btm_field_paddr == val) {
- base = gdp->node_list[i].btm_field;
- break;
- }
- }
- if (base)
- seq_printf(s, "\tVirt @: %p", base);
- }
- static void gdp_dbg_ppt(struct seq_file *s, int val)
- {
- if (val & GAM_GDP_PPT_IGNORE)
- seq_puts(s, "\tNot displayed on mixer!");
- }
- static void gdp_dbg_mst(struct seq_file *s, int val)
- {
- if (val & 1)
- seq_puts(s, "\tBUFFER UNDERFLOW!");
- }
- static int gdp_dbg_show(struct seq_file *s, void *data)
- {
- struct drm_info_node *node = s->private;
- struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
- struct drm_plane *drm_plane = &gdp->plane.drm_plane;
- struct drm_crtc *crtc;
- drm_modeset_lock(&drm_plane->mutex, NULL);
- crtc = drm_plane->state->crtc;
- drm_modeset_unlock(&drm_plane->mutex);
- seq_printf(s, "%s: (vaddr = 0x%p)",
- sti_plane_to_str(&gdp->plane), gdp->regs);
- DBGFS_DUMP(GAM_GDP_CTL);
- gdp_dbg_ctl(s, readl(gdp->regs + GAM_GDP_CTL_OFFSET));
- DBGFS_DUMP(GAM_GDP_AGC);
- DBGFS_DUMP(GAM_GDP_VPO);
- gdp_dbg_vpo(s, readl(gdp->regs + GAM_GDP_VPO_OFFSET));
- DBGFS_DUMP(GAM_GDP_VPS);
- gdp_dbg_vps(s, readl(gdp->regs + GAM_GDP_VPS_OFFSET));
- DBGFS_DUMP(GAM_GDP_PML);
- DBGFS_DUMP(GAM_GDP_PMP);
- DBGFS_DUMP(GAM_GDP_SIZE);
- gdp_dbg_size(s, readl(gdp->regs + GAM_GDP_SIZE_OFFSET));
- DBGFS_DUMP(GAM_GDP_NVN);
- gdp_dbg_nvn(s, gdp, readl(gdp->regs + GAM_GDP_NVN_OFFSET));
- DBGFS_DUMP(GAM_GDP_KEY1);
- DBGFS_DUMP(GAM_GDP_KEY2);
- DBGFS_DUMP(GAM_GDP_PPT);
- gdp_dbg_ppt(s, readl(gdp->regs + GAM_GDP_PPT_OFFSET));
- DBGFS_DUMP(GAM_GDP_CML);
- DBGFS_DUMP(GAM_GDP_MST);
- gdp_dbg_mst(s, readl(gdp->regs + GAM_GDP_MST_OFFSET));
- seq_puts(s, "\n\n");
- if (!crtc)
- seq_puts(s, " Not connected to any DRM CRTC\n");
- else
- seq_printf(s, " Connected to DRM CRTC #%d (%s)\n",
- crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)));
- return 0;
- }
- static void gdp_node_dump_node(struct seq_file *s, struct sti_gdp_node *node)
- {
- seq_printf(s, "\t@:0x%p", node);
- seq_printf(s, "\n\tCTL 0x%08X", node->gam_gdp_ctl);
- gdp_dbg_ctl(s, node->gam_gdp_ctl);
- seq_printf(s, "\n\tAGC 0x%08X", node->gam_gdp_agc);
- seq_printf(s, "\n\tVPO 0x%08X", node->gam_gdp_vpo);
- gdp_dbg_vpo(s, node->gam_gdp_vpo);
- seq_printf(s, "\n\tVPS 0x%08X", node->gam_gdp_vps);
- gdp_dbg_vps(s, node->gam_gdp_vps);
- seq_printf(s, "\n\tPML 0x%08X", node->gam_gdp_pml);
- seq_printf(s, "\n\tPMP 0x%08X", node->gam_gdp_pmp);
- seq_printf(s, "\n\tSIZE 0x%08X", node->gam_gdp_size);
- gdp_dbg_size(s, node->gam_gdp_size);
- seq_printf(s, "\n\tNVN 0x%08X", node->gam_gdp_nvn);
- seq_printf(s, "\n\tKEY1 0x%08X", node->gam_gdp_key1);
- seq_printf(s, "\n\tKEY2 0x%08X", node->gam_gdp_key2);
- seq_printf(s, "\n\tPPT 0x%08X", node->gam_gdp_ppt);
- gdp_dbg_ppt(s, node->gam_gdp_ppt);
- seq_printf(s, "\n\tCML 0x%08X\n", node->gam_gdp_cml);
- }
- static int gdp_node_dbg_show(struct seq_file *s, void *arg)
- {
- struct drm_info_node *node = s->private;
- struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
- unsigned int b;
- for (b = 0; b < GDP_NODE_NB_BANK; b++) {
- seq_printf(s, "\n%s[%d].top", sti_plane_to_str(&gdp->plane), b);
- gdp_node_dump_node(s, gdp->node_list[b].top_field);
- seq_printf(s, "\n%s[%d].btm", sti_plane_to_str(&gdp->plane), b);
- gdp_node_dump_node(s, gdp->node_list[b].btm_field);
- }
- return 0;
- }
- static struct drm_info_list gdp0_debugfs_files[] = {
- { "gdp0", gdp_dbg_show, 0, NULL },
- { "gdp0_node", gdp_node_dbg_show, 0, NULL },
- };
- static struct drm_info_list gdp1_debugfs_files[] = {
- { "gdp1", gdp_dbg_show, 0, NULL },
- { "gdp1_node", gdp_node_dbg_show, 0, NULL },
- };
- static struct drm_info_list gdp2_debugfs_files[] = {
- { "gdp2", gdp_dbg_show, 0, NULL },
- { "gdp2_node", gdp_node_dbg_show, 0, NULL },
- };
- static struct drm_info_list gdp3_debugfs_files[] = {
- { "gdp3", gdp_dbg_show, 0, NULL },
- { "gdp3_node", gdp_node_dbg_show, 0, NULL },
- };
- static int gdp_debugfs_init(struct sti_gdp *gdp, struct drm_minor *minor)
- {
- unsigned int i;
- struct drm_info_list *gdp_debugfs_files;
- int nb_files;
- switch (gdp->plane.desc) {
- case STI_GDP_0:
- gdp_debugfs_files = gdp0_debugfs_files;
- nb_files = ARRAY_SIZE(gdp0_debugfs_files);
- break;
- case STI_GDP_1:
- gdp_debugfs_files = gdp1_debugfs_files;
- nb_files = ARRAY_SIZE(gdp1_debugfs_files);
- break;
- case STI_GDP_2:
- gdp_debugfs_files = gdp2_debugfs_files;
- nb_files = ARRAY_SIZE(gdp2_debugfs_files);
- break;
- case STI_GDP_3:
- gdp_debugfs_files = gdp3_debugfs_files;
- nb_files = ARRAY_SIZE(gdp3_debugfs_files);
- break;
- default:
- return -EINVAL;
- }
- for (i = 0; i < nb_files; i++)
- gdp_debugfs_files[i].data = gdp;
- drm_debugfs_create_files(gdp_debugfs_files,
- nb_files,
- minor->debugfs_root, minor);
- return 0;
- }
- static int sti_gdp_fourcc2format(int fourcc)
- {
- switch (fourcc) {
- case DRM_FORMAT_XRGB8888:
- return GDP_RGB888_32;
- case DRM_FORMAT_XBGR8888:
- return GDP_XBGR8888;
- case DRM_FORMAT_ARGB8888:
- return GDP_ARGB8888;
- case DRM_FORMAT_ABGR8888:
- return GDP_ABGR8888;
- case DRM_FORMAT_ARGB4444:
- return GDP_ARGB4444;
- case DRM_FORMAT_ARGB1555:
- return GDP_ARGB1555;
- case DRM_FORMAT_RGB565:
- return GDP_RGB565;
- case DRM_FORMAT_RGB888:
- return GDP_RGB888;
- }
- return -1;
- }
- static int sti_gdp_get_alpharange(int format)
- {
- switch (format) {
- case GDP_ARGB8565:
- case GDP_ARGB8888:
- case GDP_ABGR8888:
- return GAM_GDP_ALPHARANGE_255;
- }
- return 0;
- }
- /**
- * sti_gdp_get_free_nodes
- * @gdp: gdp pointer
- *
- * Look for a GDP node list that is not currently read by the HW.
- *
- * RETURNS:
- * Pointer to the free GDP node list
- */
- static struct sti_gdp_node_list *sti_gdp_get_free_nodes(struct sti_gdp *gdp)
- {
- int hw_nvn;
- unsigned int i;
- hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
- if (!hw_nvn)
- goto end;
- for (i = 0; i < GDP_NODE_NB_BANK; i++)
- if ((hw_nvn != gdp->node_list[i].btm_field_paddr) &&
- (hw_nvn != gdp->node_list[i].top_field_paddr))
- return &gdp->node_list[i];
- /* in hazardous cases restart with the first node */
- DRM_ERROR("inconsistent NVN for %s: 0x%08X\n",
- sti_plane_to_str(&gdp->plane), hw_nvn);
- end:
- return &gdp->node_list[0];
- }
- /**
- * sti_gdp_get_current_nodes
- * @gdp: gdp pointer
- *
- * Look for GDP nodes that are currently read by the HW.
- *
- * RETURNS:
- * Pointer to the current GDP node list
- */
- static
- struct sti_gdp_node_list *sti_gdp_get_current_nodes(struct sti_gdp *gdp)
- {
- int hw_nvn;
- unsigned int i;
- hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
- if (!hw_nvn)
- goto end;
- for (i = 0; i < GDP_NODE_NB_BANK; i++)
- if ((hw_nvn == gdp->node_list[i].btm_field_paddr) ||
- (hw_nvn == gdp->node_list[i].top_field_paddr))
- return &gdp->node_list[i];
- end:
- DRM_DEBUG_DRIVER("Warning, NVN 0x%08X for %s does not match any node\n",
- hw_nvn, sti_plane_to_str(&gdp->plane));
- return NULL;
- }
- /**
- * sti_gdp_disable
- * @gdp: gdp pointer
- *
- * Disable a GDP.
- */
- static void sti_gdp_disable(struct sti_gdp *gdp)
- {
- unsigned int i;
- DRM_DEBUG_DRIVER("%s\n", sti_plane_to_str(&gdp->plane));
- /* Set the nodes as 'to be ignored on mixer' */
- for (i = 0; i < GDP_NODE_NB_BANK; i++) {
- gdp->node_list[i].top_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
- gdp->node_list[i].btm_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
- }
- if (sti_vtg_unregister_client(gdp->vtg, &gdp->vtg_field_nb))
- DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
- if (gdp->clk_pix)
- clk_disable_unprepare(gdp->clk_pix);
- gdp->plane.status = STI_PLANE_DISABLED;
- gdp->vtg = NULL;
- }
- /**
- * sti_gdp_field_cb
- * @nb: notifier block
- * @event: event message
- * @data: private data
- *
- * Handle VTG top field and bottom field event.
- *
- * RETURNS:
- * 0 on success.
- */
- static int sti_gdp_field_cb(struct notifier_block *nb,
- unsigned long event, void *data)
- {
- struct sti_gdp *gdp = container_of(nb, struct sti_gdp, vtg_field_nb);
- if (gdp->plane.status == STI_PLANE_FLUSHING) {
- /* disable need to be synchronize on vsync event */
- DRM_DEBUG_DRIVER("Vsync event received => disable %s\n",
- sti_plane_to_str(&gdp->plane));
- sti_gdp_disable(gdp);
- }
- switch (event) {
- case VTG_TOP_FIELD_EVENT:
- gdp->is_curr_top = true;
- break;
- case VTG_BOTTOM_FIELD_EVENT:
- gdp->is_curr_top = false;
- break;
- default:
- DRM_ERROR("unsupported event: %lu\n", event);
- break;
- }
- return 0;
- }
- static void sti_gdp_init(struct sti_gdp *gdp)
- {
- struct device_node *np = gdp->dev->of_node;
- dma_addr_t dma_addr;
- void *base;
- unsigned int i, size;
- /* Allocate all the nodes within a single memory page */
- size = sizeof(struct sti_gdp_node) *
- GDP_NODE_PER_FIELD * GDP_NODE_NB_BANK;
- base = dma_alloc_wc(gdp->dev, size, &dma_addr, GFP_KERNEL);
- if (!base) {
- DRM_ERROR("Failed to allocate memory for GDP node\n");
- return;
- }
- memset(base, 0, size);
- for (i = 0; i < GDP_NODE_NB_BANK; i++) {
- if (dma_addr & 0xF) {
- DRM_ERROR("Mem alignment failed\n");
- return;
- }
- gdp->node_list[i].top_field = base;
- gdp->node_list[i].top_field_paddr = dma_addr;
- DRM_DEBUG_DRIVER("node[%d].top_field=%p\n", i, base);
- base += sizeof(struct sti_gdp_node);
- dma_addr += sizeof(struct sti_gdp_node);
- if (dma_addr & 0xF) {
- DRM_ERROR("Mem alignment failed\n");
- return;
- }
- gdp->node_list[i].btm_field = base;
- gdp->node_list[i].btm_field_paddr = dma_addr;
- DRM_DEBUG_DRIVER("node[%d].btm_field=%p\n", i, base);
- base += sizeof(struct sti_gdp_node);
- dma_addr += sizeof(struct sti_gdp_node);
- }
- if (of_device_is_compatible(np, "st,stih407-compositor")) {
- /* GDP of STiH407 chip have its own pixel clock */
- char *clk_name;
- switch (gdp->plane.desc) {
- case STI_GDP_0:
- clk_name = "pix_gdp1";
- break;
- case STI_GDP_1:
- clk_name = "pix_gdp2";
- break;
- case STI_GDP_2:
- clk_name = "pix_gdp3";
- break;
- case STI_GDP_3:
- clk_name = "pix_gdp4";
- break;
- default:
- DRM_ERROR("GDP id not recognized\n");
- return;
- }
- gdp->clk_pix = devm_clk_get(gdp->dev, clk_name);
- if (IS_ERR(gdp->clk_pix))
- DRM_ERROR("Cannot get %s clock\n", clk_name);
- gdp->clk_main_parent = devm_clk_get(gdp->dev, "main_parent");
- if (IS_ERR(gdp->clk_main_parent))
- DRM_ERROR("Cannot get main_parent clock\n");
- gdp->clk_aux_parent = devm_clk_get(gdp->dev, "aux_parent");
- if (IS_ERR(gdp->clk_aux_parent))
- DRM_ERROR("Cannot get aux_parent clock\n");
- }
- }
- /**
- * sti_gdp_get_dst
- * @dev: device
- * @dst: requested destination size
- * @src: source size
- *
- * Return the cropped / clamped destination size
- *
- * RETURNS:
- * cropped / clamped destination size
- */
- static int sti_gdp_get_dst(struct device *dev, int dst, int src)
- {
- if (dst == src)
- return dst;
- if (dst < src) {
- dev_dbg(dev, "WARNING: GDP scale not supported, will crop\n");
- return dst;
- }
- dev_dbg(dev, "WARNING: GDP scale not supported, will clamp\n");
- return src;
- }
- static int sti_gdp_atomic_check(struct drm_plane *drm_plane,
- struct drm_atomic_state *state)
- {
- struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
- drm_plane);
- struct sti_plane *plane = to_sti_plane(drm_plane);
- struct sti_gdp *gdp = to_sti_gdp(plane);
- struct drm_crtc *crtc = new_plane_state->crtc;
- struct drm_framebuffer *fb = new_plane_state->fb;
- struct drm_crtc_state *crtc_state;
- struct sti_mixer *mixer;
- struct drm_display_mode *mode;
- int dst_x, dst_y, dst_w, dst_h;
- int src_x, src_y, src_w, src_h;
- int format;
- /* no need for further checks if the plane is being disabled */
- if (!crtc || !fb)
- return 0;
- mixer = to_sti_mixer(crtc);
- crtc_state = drm_atomic_get_crtc_state(state, crtc);
- mode = &crtc_state->mode;
- dst_x = new_plane_state->crtc_x;
- dst_y = new_plane_state->crtc_y;
- dst_w = clamp_val(new_plane_state->crtc_w, 0, mode->hdisplay - dst_x);
- dst_h = clamp_val(new_plane_state->crtc_h, 0, mode->vdisplay - dst_y);
- /* src_x are in 16.16 format */
- src_x = new_plane_state->src_x >> 16;
- src_y = new_plane_state->src_y >> 16;
- src_w = clamp_val(new_plane_state->src_w >> 16, 0,
- GAM_GDP_SIZE_MAX_WIDTH);
- src_h = clamp_val(new_plane_state->src_h >> 16, 0,
- GAM_GDP_SIZE_MAX_HEIGHT);
- format = sti_gdp_fourcc2format(fb->format->format);
- if (format == -1) {
- DRM_ERROR("Format not supported by GDP %.4s\n",
- (char *)&fb->format->format);
- return -EINVAL;
- }
- if (!drm_fb_dma_get_gem_obj(fb, 0)) {
- DRM_ERROR("Can't get DMA GEM object for fb\n");
- return -EINVAL;
- }
- /* Set gdp clock */
- if (mode->clock && gdp->clk_pix) {
- struct clk *clkp;
- int rate = mode->clock * 1000;
- int res;
- /*
- * According to the mixer used, the gdp pixel clock
- * should have a different parent clock.
- */
- if (mixer->id == STI_MIXER_MAIN)
- clkp = gdp->clk_main_parent;
- else
- clkp = gdp->clk_aux_parent;
- if (clkp)
- clk_set_parent(gdp->clk_pix, clkp);
- res = clk_set_rate(gdp->clk_pix, rate);
- if (res < 0) {
- DRM_ERROR("Cannot set rate (%dHz) for gdp\n",
- rate);
- return -EINVAL;
- }
- }
- DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
- crtc->base.id, sti_mixer_to_str(mixer),
- drm_plane->base.id, sti_plane_to_str(plane));
- DRM_DEBUG_KMS("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
- sti_plane_to_str(plane),
- dst_w, dst_h, dst_x, dst_y,
- src_w, src_h, src_x, src_y);
- return 0;
- }
- static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
- struct drm_atomic_state *state)
- {
- struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
- drm_plane);
- struct drm_plane_state *newstate = drm_atomic_get_new_plane_state(state,
- drm_plane);
- struct sti_plane *plane = to_sti_plane(drm_plane);
- struct sti_gdp *gdp = to_sti_gdp(plane);
- struct drm_crtc *crtc = newstate->crtc;
- struct drm_framebuffer *fb = newstate->fb;
- struct drm_display_mode *mode;
- int dst_x, dst_y, dst_w, dst_h;
- int src_x, src_y, src_w, src_h;
- struct drm_gem_dma_object *dma_obj;
- struct sti_gdp_node_list *list;
- struct sti_gdp_node_list *curr_list;
- struct sti_gdp_node *top_field, *btm_field;
- u32 dma_updated_top;
- u32 dma_updated_btm;
- int format;
- unsigned int bpp;
- u32 ydo, xdo, yds, xds;
- if (!crtc || !fb)
- return;
- if ((oldstate->fb == newstate->fb) &&
- (oldstate->crtc_x == newstate->crtc_x) &&
- (oldstate->crtc_y == newstate->crtc_y) &&
- (oldstate->crtc_w == newstate->crtc_w) &&
- (oldstate->crtc_h == newstate->crtc_h) &&
- (oldstate->src_x == newstate->src_x) &&
- (oldstate->src_y == newstate->src_y) &&
- (oldstate->src_w == newstate->src_w) &&
- (oldstate->src_h == newstate->src_h)) {
- /* No change since last update, do not post cmd */
- DRM_DEBUG_DRIVER("No change, not posting cmd\n");
- plane->status = STI_PLANE_UPDATED;
- return;
- }
- if (!gdp->vtg) {
- struct sti_compositor *compo = dev_get_drvdata(gdp->dev);
- struct sti_mixer *mixer = to_sti_mixer(crtc);
- /* Register gdp callback */
- gdp->vtg = compo->vtg[mixer->id];
- sti_vtg_register_client(gdp->vtg, &gdp->vtg_field_nb, crtc);
- clk_prepare_enable(gdp->clk_pix);
- }
- mode = &crtc->mode;
- dst_x = newstate->crtc_x;
- dst_y = newstate->crtc_y;
- dst_w = clamp_val(newstate->crtc_w, 0, mode->hdisplay - dst_x);
- dst_h = clamp_val(newstate->crtc_h, 0, mode->vdisplay - dst_y);
- /* src_x are in 16.16 format */
- src_x = newstate->src_x >> 16;
- src_y = newstate->src_y >> 16;
- src_w = clamp_val(newstate->src_w >> 16, 0, GAM_GDP_SIZE_MAX_WIDTH);
- src_h = clamp_val(newstate->src_h >> 16, 0, GAM_GDP_SIZE_MAX_HEIGHT);
- list = sti_gdp_get_free_nodes(gdp);
- top_field = list->top_field;
- btm_field = list->btm_field;
- dev_dbg(gdp->dev, "%s %s top_node:0x%p btm_node:0x%p\n", __func__,
- sti_plane_to_str(plane), top_field, btm_field);
- /* build the top field */
- top_field->gam_gdp_agc = GAM_GDP_AGC_FULL_RANGE;
- top_field->gam_gdp_ctl = WAIT_NEXT_VSYNC;
- format = sti_gdp_fourcc2format(fb->format->format);
- top_field->gam_gdp_ctl |= format;
- top_field->gam_gdp_ctl |= sti_gdp_get_alpharange(format);
- top_field->gam_gdp_ppt &= ~GAM_GDP_PPT_IGNORE;
- dma_obj = drm_fb_dma_get_gem_obj(fb, 0);
- DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
- (char *)&fb->format->format,
- (unsigned long) dma_obj->dma_addr);
- /* pixel memory location */
- bpp = fb->format->cpp[0];
- top_field->gam_gdp_pml = (u32) dma_obj->dma_addr + fb->offsets[0];
- top_field->gam_gdp_pml += src_x * bpp;
- top_field->gam_gdp_pml += src_y * fb->pitches[0];
- /* output parameters (clamped / cropped) */
- dst_w = sti_gdp_get_dst(gdp->dev, dst_w, src_w);
- dst_h = sti_gdp_get_dst(gdp->dev, dst_h, src_h);
- ydo = sti_vtg_get_line_number(*mode, dst_y);
- yds = sti_vtg_get_line_number(*mode, dst_y + dst_h - 1);
- xdo = sti_vtg_get_pixel_number(*mode, dst_x);
- xds = sti_vtg_get_pixel_number(*mode, dst_x + dst_w - 1);
- top_field->gam_gdp_vpo = (ydo << 16) | xdo;
- top_field->gam_gdp_vps = (yds << 16) | xds;
- /* input parameters */
- src_w = dst_w;
- top_field->gam_gdp_pmp = fb->pitches[0];
- top_field->gam_gdp_size = src_h << 16 | src_w;
- /* Same content and chained together */
- memcpy(btm_field, top_field, sizeof(*btm_field));
- top_field->gam_gdp_nvn = list->btm_field_paddr;
- btm_field->gam_gdp_nvn = list->top_field_paddr;
- /* Interlaced mode */
- if (mode->flags & DRM_MODE_FLAG_INTERLACE)
- btm_field->gam_gdp_pml = top_field->gam_gdp_pml +
- fb->pitches[0];
- /* Update the NVN field of the 'right' field of the current GDP node
- * (being used by the HW) with the address of the updated ('free') top
- * field GDP node.
- * - In interlaced mode the 'right' field is the bottom field as we
- * update frames starting from their top field
- * - In progressive mode, we update both bottom and top fields which
- * are equal nodes.
- * At the next VSYNC, the updated node list will be used by the HW.
- */
- curr_list = sti_gdp_get_current_nodes(gdp);
- dma_updated_top = list->top_field_paddr;
- dma_updated_btm = list->btm_field_paddr;
- dev_dbg(gdp->dev, "Current NVN:0x%X\n",
- readl(gdp->regs + GAM_GDP_NVN_OFFSET));
- dev_dbg(gdp->dev, "Posted buff: %lx current buff: %x\n",
- (unsigned long) dma_obj->dma_addr,
- readl(gdp->regs + GAM_GDP_PML_OFFSET));
- if (!curr_list) {
- /* First update or invalid node should directly write in the
- * hw register */
- DRM_DEBUG_DRIVER("%s first update (or invalid node)\n",
- sti_plane_to_str(plane));
- writel(gdp->is_curr_top ?
- dma_updated_btm : dma_updated_top,
- gdp->regs + GAM_GDP_NVN_OFFSET);
- goto end;
- }
- if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
- if (gdp->is_curr_top) {
- /* Do not update in the middle of the frame, but
- * postpone the update after the bottom field has
- * been displayed */
- curr_list->btm_field->gam_gdp_nvn = dma_updated_top;
- } else {
- /* Direct update to avoid one frame delay */
- writel(dma_updated_top,
- gdp->regs + GAM_GDP_NVN_OFFSET);
- }
- } else {
- /* Direct update for progressive to avoid one frame delay */
- writel(dma_updated_top, gdp->regs + GAM_GDP_NVN_OFFSET);
- }
- end:
- sti_plane_update_fps(plane, true, false);
- plane->status = STI_PLANE_UPDATED;
- }
- static void sti_gdp_atomic_disable(struct drm_plane *drm_plane,
- struct drm_atomic_state *state)
- {
- struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
- drm_plane);
- struct sti_plane *plane = to_sti_plane(drm_plane);
- if (!oldstate->crtc) {
- DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
- drm_plane->base.id);
- return;
- }
- DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
- oldstate->crtc->base.id,
- sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
- drm_plane->base.id, sti_plane_to_str(plane));
- plane->status = STI_PLANE_DISABLING;
- }
- static const struct drm_plane_helper_funcs sti_gdp_helpers_funcs = {
- .atomic_check = sti_gdp_atomic_check,
- .atomic_update = sti_gdp_atomic_update,
- .atomic_disable = sti_gdp_atomic_disable,
- };
- static int sti_gdp_late_register(struct drm_plane *drm_plane)
- {
- struct sti_plane *plane = to_sti_plane(drm_plane);
- struct sti_gdp *gdp = to_sti_gdp(plane);
- return gdp_debugfs_init(gdp, drm_plane->dev->primary);
- }
- static const struct drm_plane_funcs sti_gdp_plane_helpers_funcs = {
- .update_plane = drm_atomic_helper_update_plane,
- .disable_plane = drm_atomic_helper_disable_plane,
- .destroy = drm_plane_cleanup,
- .reset = drm_atomic_helper_plane_reset,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
- .late_register = sti_gdp_late_register,
- };
- struct drm_plane *sti_gdp_create(struct drm_device *drm_dev,
- struct device *dev, int desc,
- void __iomem *baseaddr,
- unsigned int possible_crtcs,
- enum drm_plane_type type)
- {
- struct sti_gdp *gdp;
- int res;
- gdp = devm_kzalloc(dev, sizeof(*gdp), GFP_KERNEL);
- if (!gdp) {
- DRM_ERROR("Failed to allocate memory for GDP\n");
- return NULL;
- }
- gdp->dev = dev;
- gdp->regs = baseaddr;
- gdp->plane.desc = desc;
- gdp->plane.status = STI_PLANE_DISABLED;
- gdp->vtg_field_nb.notifier_call = sti_gdp_field_cb;
- sti_gdp_init(gdp);
- res = drm_universal_plane_init(drm_dev, &gdp->plane.drm_plane,
- possible_crtcs,
- &sti_gdp_plane_helpers_funcs,
- gdp_supported_formats,
- ARRAY_SIZE(gdp_supported_formats),
- NULL, type, NULL);
- if (res) {
- DRM_ERROR("Failed to initialize universal plane\n");
- goto err;
- }
- drm_plane_helper_add(&gdp->plane.drm_plane, &sti_gdp_helpers_funcs);
- sti_plane_init_property(&gdp->plane, type);
- return &gdp->plane.drm_plane;
- err:
- devm_kfree(dev, gdp);
- return NULL;
- }
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