diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_kms.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.c | 677 |
1 files changed, 0 insertions, 677 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c deleted file mode 100644 index 9c7007d45408..000000000000 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ /dev/null @@ -1,677 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * rcar_du_kms.c -- R-Car Display Unit Mode Setting - * - * Copyright (C) 2013-2015 Renesas Electronics Corporation - * - * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) - */ - -#include <drm/drmP.h> -#include <drm/drm_atomic.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_crtc.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> - -#include <linux/of_graph.h> -#include <linux/wait.h> - -#include "rcar_du_crtc.h" -#include "rcar_du_drv.h" -#include "rcar_du_encoder.h" -#include "rcar_du_kms.h" -#include "rcar_du_regs.h" -#include "rcar_du_vsp.h" - -/* ----------------------------------------------------------------------------- - * Format helpers - */ - -static const struct rcar_du_format_info rcar_du_format_infos[] = { - { - .fourcc = DRM_FORMAT_RGB565, - .bpp = 16, - .planes = 1, - .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_ARGB1555, - .bpp = 16, - .planes = 1, - .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_XRGB1555, - .bpp = 16, - .planes = 1, - .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_XRGB8888, - .bpp = 32, - .planes = 1, - .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, - .edf = PnDDCR4_EDF_RGB888, - }, { - .fourcc = DRM_FORMAT_ARGB8888, - .bpp = 32, - .planes = 1, - .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_16BPP, - .edf = PnDDCR4_EDF_ARGB8888, - }, { - .fourcc = DRM_FORMAT_UYVY, - .bpp = 16, - .planes = 1, - .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_YUYV, - .bpp = 16, - .planes = 1, - .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_NV12, - .bpp = 12, - .planes = 2, - .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_NV21, - .bpp = 12, - .planes = 2, - .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, - .edf = PnDDCR4_EDF_NONE, - }, { - .fourcc = DRM_FORMAT_NV16, - .bpp = 16, - .planes = 2, - .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, - .edf = PnDDCR4_EDF_NONE, - }, - /* - * The following formats are not supported on Gen2 and thus have no - * associated .pnmr or .edf settings. - */ - { - .fourcc = DRM_FORMAT_RGB332, - .bpp = 8, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_ARGB4444, - .bpp = 16, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_XRGB4444, - .bpp = 16, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_BGR888, - .bpp = 24, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_RGB888, - .bpp = 24, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_BGRA8888, - .bpp = 32, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_BGRX8888, - .bpp = 32, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_YVYU, - .bpp = 16, - .planes = 1, - }, { - .fourcc = DRM_FORMAT_NV61, - .bpp = 16, - .planes = 2, - }, { - .fourcc = DRM_FORMAT_YUV420, - .bpp = 12, - .planes = 3, - }, { - .fourcc = DRM_FORMAT_YVU420, - .bpp = 12, - .planes = 3, - }, { - .fourcc = DRM_FORMAT_YUV422, - .bpp = 16, - .planes = 3, - }, { - .fourcc = DRM_FORMAT_YVU422, - .bpp = 16, - .planes = 3, - }, { - .fourcc = DRM_FORMAT_YUV444, - .bpp = 24, - .planes = 3, - }, { - .fourcc = DRM_FORMAT_YVU444, - .bpp = 24, - .planes = 3, - }, -}; - -const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(rcar_du_format_infos); ++i) { - if (rcar_du_format_infos[i].fourcc == fourcc) - return &rcar_du_format_infos[i]; - } - - return NULL; -} - -/* ----------------------------------------------------------------------------- - * Frame buffer - */ - -int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, - struct drm_mode_create_dumb *args) -{ - struct rcar_du_device *rcdu = dev->dev_private; - unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); - unsigned int align; - - /* - * The R8A7779 DU requires a 16 pixels pitch alignment as documented, - * but the R8A7790 DU seems to require a 128 bytes pitch alignment. - */ - if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) - align = 128; - else - align = 16 * args->bpp / 8; - - args->pitch = roundup(min_pitch, align); - - return drm_gem_cma_dumb_create_internal(file, dev, args); -} - -static struct drm_framebuffer * -rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, - const struct drm_mode_fb_cmd2 *mode_cmd) -{ - struct rcar_du_device *rcdu = dev->dev_private; - const struct rcar_du_format_info *format; - unsigned int max_pitch; - unsigned int align; - unsigned int i; - - format = rcar_du_format_info(mode_cmd->pixel_format); - if (format == NULL) { - dev_dbg(dev->dev, "unsupported pixel format %08x\n", - mode_cmd->pixel_format); - return ERR_PTR(-EINVAL); - } - - if (rcdu->info->gen < 3) { - /* - * On Gen2 the DU limits the pitch to 4095 pixels and requires - * buffers to be aligned to a 16 pixels boundary (or 128 bytes - * on some platforms). - */ - unsigned int bpp = format->planes == 1 ? format->bpp / 8 : 1; - - max_pitch = 4095 * bpp; - - if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) - align = 128; - else - align = 16 * bpp; - } else { - /* - * On Gen3 the memory interface is handled by the VSP that - * limits the pitch to 65535 bytes and has no alignment - * constraint. - */ - max_pitch = 65535; - align = 1; - } - - if (mode_cmd->pitches[0] & (align - 1) || - mode_cmd->pitches[0] > max_pitch) { - dev_dbg(dev->dev, "invalid pitch value %u\n", - mode_cmd->pitches[0]); - return ERR_PTR(-EINVAL); - } - - for (i = 1; i < format->planes; ++i) { - if (mode_cmd->pitches[i] != mode_cmd->pitches[0]) { - dev_dbg(dev->dev, - "luma and chroma pitches do not match\n"); - return ERR_PTR(-EINVAL); - } - } - - return drm_gem_fb_create(dev, file_priv, mode_cmd); -} - -/* ----------------------------------------------------------------------------- - * Atomic Check and Update - */ - -static int rcar_du_atomic_check(struct drm_device *dev, - struct drm_atomic_state *state) -{ - struct rcar_du_device *rcdu = dev->dev_private; - int ret; - - ret = drm_atomic_helper_check(dev, state); - if (ret) - return ret; - - if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) - return 0; - - return rcar_du_atomic_check_planes(dev, state); -} - -static void rcar_du_atomic_commit_tail(struct drm_atomic_state *old_state) -{ - struct drm_device *dev = old_state->dev; - - /* Apply the atomic update. */ - drm_atomic_helper_commit_modeset_disables(dev, old_state); - drm_atomic_helper_commit_planes(dev, old_state, - DRM_PLANE_COMMIT_ACTIVE_ONLY); - drm_atomic_helper_commit_modeset_enables(dev, old_state); - - drm_atomic_helper_commit_hw_done(old_state); - drm_atomic_helper_wait_for_flip_done(dev, old_state); - - drm_atomic_helper_cleanup_planes(dev, old_state); -} - -/* ----------------------------------------------------------------------------- - * Initialization - */ - -static const struct drm_mode_config_helper_funcs rcar_du_mode_config_helper = { - .atomic_commit_tail = rcar_du_atomic_commit_tail, -}; - -static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = { - .fb_create = rcar_du_fb_create, - .atomic_check = rcar_du_atomic_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu, - enum rcar_du_output output, - struct of_endpoint *ep) -{ - struct device_node *connector = NULL; - struct device_node *encoder = NULL; - struct device_node *ep_node = NULL; - struct device_node *entity_ep_node; - struct device_node *entity; - int ret; - - /* - * Locate the connected entity and infer its type from the number of - * endpoints. - */ - entity = of_graph_get_remote_port_parent(ep->local_node); - if (!entity) { - dev_dbg(rcdu->dev, "unconnected endpoint %pOF, skipping\n", - ep->local_node); - return -ENODEV; - } - - if (!of_device_is_available(entity)) { - dev_dbg(rcdu->dev, - "connected entity %pOF is disabled, skipping\n", - entity); - return -ENODEV; - } - - entity_ep_node = of_graph_get_remote_endpoint(ep->local_node); - - for_each_endpoint_of_node(entity, ep_node) { - if (ep_node == entity_ep_node) - continue; - - /* - * We've found one endpoint other than the input, this must - * be an encoder. Locate the connector. - */ - encoder = entity; - connector = of_graph_get_remote_port_parent(ep_node); - of_node_put(ep_node); - - if (!connector) { - dev_warn(rcdu->dev, - "no connector for encoder %pOF, skipping\n", - encoder); - of_node_put(entity_ep_node); - of_node_put(encoder); - return -ENODEV; - } - - break; - } - - of_node_put(entity_ep_node); - - if (!encoder) { - dev_warn(rcdu->dev, - "no encoder found for endpoint %pOF, skipping\n", - ep->local_node); - return -ENODEV; - } - - ret = rcar_du_encoder_init(rcdu, output, encoder, connector); - if (ret && ret != -EPROBE_DEFER) - dev_warn(rcdu->dev, - "failed to initialize encoder %pOF on output %u (%d), skipping\n", - encoder, output, ret); - - of_node_put(encoder); - of_node_put(connector); - - return ret; -} - -static int rcar_du_encoders_init(struct rcar_du_device *rcdu) -{ - struct device_node *np = rcdu->dev->of_node; - struct device_node *ep_node; - unsigned int num_encoders = 0; - - /* - * Iterate over the endpoints and create one encoder for each output - * pipeline. - */ - for_each_endpoint_of_node(np, ep_node) { - enum rcar_du_output output; - struct of_endpoint ep; - unsigned int i; - int ret; - - ret = of_graph_parse_endpoint(ep_node, &ep); - if (ret < 0) { - of_node_put(ep_node); - return ret; - } - - /* Find the output route corresponding to the port number. */ - for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) { - if (rcdu->info->routes[i].possible_crtcs && - rcdu->info->routes[i].port == ep.port) { - output = i; - break; - } - } - - if (i == RCAR_DU_OUTPUT_MAX) { - dev_warn(rcdu->dev, - "port %u references unexisting output, skipping\n", - ep.port); - continue; - } - - /* Process the output pipeline. */ - ret = rcar_du_encoders_init_one(rcdu, output, &ep); - if (ret < 0) { - if (ret == -EPROBE_DEFER) { - of_node_put(ep_node); - return ret; - } - - continue; - } - - num_encoders++; - } - - return num_encoders; -} - -static int rcar_du_properties_init(struct rcar_du_device *rcdu) -{ - /* - * The color key is expressed as an RGB888 triplet stored in a 32-bit - * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0) - * or enable source color keying (1). - */ - rcdu->props.colorkey = - drm_property_create_range(rcdu->ddev, 0, "colorkey", - 0, 0x01ffffff); - if (rcdu->props.colorkey == NULL) - return -ENOMEM; - - return 0; -} - -static int rcar_du_vsps_init(struct rcar_du_device *rcdu) -{ - const struct device_node *np = rcdu->dev->of_node; - struct of_phandle_args args; - struct { - struct device_node *np; - unsigned int crtcs_mask; - } vsps[RCAR_DU_MAX_VSPS] = { { NULL, }, }; - unsigned int vsps_count = 0; - unsigned int cells; - unsigned int i; - int ret; - - /* - * First parse the DT vsps property to populate the list of VSPs. Each - * entry contains a pointer to the VSP DT node and a bitmask of the - * connected DU CRTCs. - */ - cells = of_property_count_u32_elems(np, "vsps") / rcdu->num_crtcs - 1; - if (cells > 1) - return -EINVAL; - - for (i = 0; i < rcdu->num_crtcs; ++i) { - unsigned int j; - - ret = of_parse_phandle_with_fixed_args(np, "vsps", cells, i, - &args); - if (ret < 0) - goto error; - - /* - * Add the VSP to the list or update the corresponding existing - * entry if the VSP has already been added. - */ - for (j = 0; j < vsps_count; ++j) { - if (vsps[j].np == args.np) - break; - } - - if (j < vsps_count) - of_node_put(args.np); - else - vsps[vsps_count++].np = args.np; - - vsps[j].crtcs_mask |= BIT(i); - - /* Store the VSP pointer and pipe index in the CRTC. */ - rcdu->crtcs[i].vsp = &rcdu->vsps[j]; - rcdu->crtcs[i].vsp_pipe = cells >= 1 ? args.args[0] : 0; - } - - /* - * Then initialize all the VSPs from the node pointers and CRTCs bitmask - * computed previously. - */ - for (i = 0; i < vsps_count; ++i) { - struct rcar_du_vsp *vsp = &rcdu->vsps[i]; - - vsp->index = i; - vsp->dev = rcdu; - - ret = rcar_du_vsp_init(vsp, vsps[i].np, vsps[i].crtcs_mask); - if (ret < 0) - goto error; - } - - return 0; - -error: - for (i = 0; i < ARRAY_SIZE(vsps); ++i) - of_node_put(vsps[i].np); - - return ret; -} - -int rcar_du_modeset_init(struct rcar_du_device *rcdu) -{ - static const unsigned int mmio_offsets[] = { - DU0_REG_OFFSET, DU2_REG_OFFSET - }; - - struct drm_device *dev = rcdu->ddev; - struct drm_encoder *encoder; - unsigned int dpad0_sources; - unsigned int num_encoders; - unsigned int num_groups; - unsigned int swindex; - unsigned int hwindex; - unsigned int i; - int ret; - - drm_mode_config_init(dev); - - dev->mode_config.min_width = 0; - dev->mode_config.min_height = 0; - dev->mode_config.normalize_zpos = true; - dev->mode_config.funcs = &rcar_du_mode_config_funcs; - dev->mode_config.helper_private = &rcar_du_mode_config_helper; - - if (rcdu->info->gen < 3) { - dev->mode_config.max_width = 4095; - dev->mode_config.max_height = 2047; - } else { - /* - * The Gen3 DU uses the VSP1 for memory access, and is limited - * to frame sizes of 8190x8190. - */ - dev->mode_config.max_width = 8190; - dev->mode_config.max_height = 8190; - } - - rcdu->num_crtcs = hweight8(rcdu->info->channels_mask); - - ret = rcar_du_properties_init(rcdu); - if (ret < 0) - return ret; - - /* - * Initialize vertical blanking interrupts handling. Start with vblank - * disabled for all CRTCs. - */ - ret = drm_vblank_init(dev, rcdu->num_crtcs); - if (ret < 0) - return ret; - - /* Initialize the groups. */ - num_groups = DIV_ROUND_UP(rcdu->num_crtcs, 2); - - for (i = 0; i < num_groups; ++i) { - struct rcar_du_group *rgrp = &rcdu->groups[i]; - - mutex_init(&rgrp->lock); - - rgrp->dev = rcdu; - rgrp->mmio_offset = mmio_offsets[i]; - rgrp->index = i; - /* Extract the channel mask for this group only. */ - rgrp->channels_mask = (rcdu->info->channels_mask >> (2 * i)) - & GENMASK(1, 0); - rgrp->num_crtcs = hweight8(rgrp->channels_mask); - - /* - * If we have more than one CRTCs in this group pre-associate - * the low-order planes with CRTC 0 and the high-order planes - * with CRTC 1 to minimize flicker occurring when the - * association is changed. - */ - rgrp->dptsr_planes = rgrp->num_crtcs > 1 - ? (rcdu->info->gen >= 3 ? 0x04 : 0xf0) - : 0; - - if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) { - ret = rcar_du_planes_init(rgrp); - if (ret < 0) - return ret; - } - } - - /* Initialize the compositors. */ - if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) { - ret = rcar_du_vsps_init(rcdu); - if (ret < 0) - return ret; - } - - /* Create the CRTCs. */ - for (swindex = 0, hwindex = 0; swindex < rcdu->num_crtcs; ++hwindex) { - struct rcar_du_group *rgrp; - - /* Skip unpopulated DU channels. */ - if (!(rcdu->info->channels_mask & BIT(hwindex))) - continue; - - rgrp = &rcdu->groups[hwindex / 2]; - - ret = rcar_du_crtc_create(rgrp, swindex++, hwindex); - if (ret < 0) - return ret; - } - - /* Initialize the encoders. */ - ret = rcar_du_encoders_init(rcdu); - if (ret < 0) - return ret; - - if (ret == 0) { - dev_err(rcdu->dev, "error: no encoder could be initialized\n"); - return -EINVAL; - } - - num_encoders = ret; - - /* - * Set the possible CRTCs and possible clones. There's always at least - * one way for all encoders to clone each other, set all bits in the - * possible clones field. - */ - list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - struct rcar_du_encoder *renc = to_rcar_encoder(encoder); - const struct rcar_du_output_routing *route = - &rcdu->info->routes[renc->output]; - - encoder->possible_crtcs = route->possible_crtcs; - encoder->possible_clones = (1 << num_encoders) - 1; - } - - /* - * Initialize the default DPAD0 source to the index of the first DU - * channel that can be connected to DPAD0. The exact value doesn't - * matter as it should be overwritten by mode setting for the RGB - * output, but it is nonetheless required to ensure a valid initial - * hardware configuration on Gen3 where DU0 can't always be connected to - * DPAD0. - */ - dpad0_sources = rcdu->info->routes[RCAR_DU_OUTPUT_DPAD0].possible_crtcs; - rcdu->dpad0_source = ffs(dpad0_sources) - 1; - - drm_mode_config_reset(dev); - - drm_kms_helper_poll_init(dev); - - return 0; -} |