diff options
Diffstat (limited to 'drivers/gpu/drm/atmel-hlcdc')
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/Makefile | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 406 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 579 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 213 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c | 667 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h | 398 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 319 | ||||
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 856 |
9 files changed, 3456 insertions, 0 deletions
diff --git a/drivers/gpu/drm/atmel-hlcdc/Kconfig b/drivers/gpu/drm/atmel-hlcdc/Kconfig new file mode 100644 index 000000000000..99b4f0698a30 --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/Kconfig @@ -0,0 +1,11 @@ +config DRM_ATMEL_HLCDC + tristate "DRM Support for ATMEL HLCDC Display Controller" + depends on DRM && OF && COMMON_CLK && MFD_ATMEL_HLCDC && ARM + select DRM_GEM_CMA_HELPER + select DRM_KMS_HELPER + select DRM_KMS_FB_HELPER + select DRM_KMS_CMA_HELPER + select DRM_PANEL + help + Choose this option if you have an ATMEL SoC with an HLCDC display + controller (i.e. at91sam9n12, at91sam9x5 family or sama5d3 family). diff --git a/drivers/gpu/drm/atmel-hlcdc/Makefile b/drivers/gpu/drm/atmel-hlcdc/Makefile new file mode 100644 index 000000000000..10ae426e60bd --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/Makefile @@ -0,0 +1,7 @@ +atmel-hlcdc-dc-y := atmel_hlcdc_crtc.o \ + atmel_hlcdc_dc.o \ + atmel_hlcdc_layer.o \ + atmel_hlcdc_output.o \ + atmel_hlcdc_plane.o + +obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc-dc.o diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c new file mode 100644 index 000000000000..0409b907de5d --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -0,0 +1,406 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/clk.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drmP.h> + +#include <video/videomode.h> + +#include "atmel_hlcdc_dc.h" + +/** + * Atmel HLCDC CRTC structure + * + * @base: base DRM CRTC structure + * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device + * @event: pointer to the current page flip event + * @id: CRTC id (returned by drm_crtc_index) + * @dpms: DPMS mode + */ +struct atmel_hlcdc_crtc { + struct drm_crtc base; + struct atmel_hlcdc_dc *dc; + struct drm_pending_vblank_event *event; + int id; + int dpms; +}; + +static inline struct atmel_hlcdc_crtc * +drm_crtc_to_atmel_hlcdc_crtc(struct drm_crtc *crtc) +{ + return container_of(crtc, struct atmel_hlcdc_crtc, base); +} + +static void atmel_hlcdc_crtc_dpms(struct drm_crtc *c, int mode) +{ + struct drm_device *dev = c->dev; + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct regmap *regmap = crtc->dc->hlcdc->regmap; + unsigned int status; + + if (mode != DRM_MODE_DPMS_ON) + mode = DRM_MODE_DPMS_OFF; + + if (crtc->dpms == mode) + return; + + pm_runtime_get_sync(dev->dev); + + if (mode != DRM_MODE_DPMS_ON) { + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_DISP); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_DISP)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_SYNC); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_SYNC)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_PIXEL_CLK); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_PIXEL_CLK)) + cpu_relax(); + + clk_disable_unprepare(crtc->dc->hlcdc->sys_clk); + + pm_runtime_allow(dev->dev); + } else { + pm_runtime_forbid(dev->dev); + + clk_prepare_enable(crtc->dc->hlcdc->sys_clk); + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_PIXEL_CLK); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_PIXEL_CLK)) + cpu_relax(); + + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_SYNC); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_SYNC)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_DISP); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_DISP)) + cpu_relax(); + } + + pm_runtime_put_sync(dev->dev); + + crtc->dpms = mode; +} + +static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c, + struct drm_display_mode *mode, + struct drm_display_mode *adj, + int x, int y, + struct drm_framebuffer *old_fb) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct regmap *regmap = crtc->dc->hlcdc->regmap; + struct drm_plane *plane = c->primary; + struct drm_framebuffer *fb; + unsigned long mode_rate; + struct videomode vm; + unsigned long prate; + unsigned int cfg; + int div; + + if (atmel_hlcdc_dc_mode_valid(crtc->dc, adj) != MODE_OK) + return -EINVAL; + + vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay; + vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end; + vm.vsync_len = adj->crtc_vsync_end - adj->crtc_vsync_start; + vm.hfront_porch = adj->crtc_hsync_start - adj->crtc_hdisplay; + vm.hback_porch = adj->crtc_htotal - adj->crtc_hsync_end; + vm.hsync_len = adj->crtc_hsync_end - adj->crtc_hsync_start; + + regmap_write(regmap, ATMEL_HLCDC_CFG(1), + (vm.hsync_len - 1) | ((vm.vsync_len - 1) << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(2), + (vm.vfront_porch - 1) | (vm.vback_porch << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(3), + (vm.hfront_porch - 1) | ((vm.hback_porch - 1) << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(4), + (adj->crtc_hdisplay - 1) | + ((adj->crtc_vdisplay - 1) << 16)); + + cfg = ATMEL_HLCDC_CLKPOL; + + prate = clk_get_rate(crtc->dc->hlcdc->sys_clk); + mode_rate = mode->crtc_clock * 1000; + if ((prate / 2) < mode_rate) { + prate *= 2; + cfg |= ATMEL_HLCDC_CLKSEL; + } + + div = DIV_ROUND_UP(prate, mode_rate); + if (div < 2) + div = 2; + + cfg |= ATMEL_HLCDC_CLKDIV(div); + + regmap_update_bits(regmap, ATMEL_HLCDC_CFG(0), + ATMEL_HLCDC_CLKSEL | ATMEL_HLCDC_CLKDIV_MASK | + ATMEL_HLCDC_CLKPOL, cfg); + + cfg = 0; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + cfg |= ATMEL_HLCDC_VSPOL; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + cfg |= ATMEL_HLCDC_HSPOL; + + regmap_update_bits(regmap, ATMEL_HLCDC_CFG(5), + ATMEL_HLCDC_HSPOL | ATMEL_HLCDC_VSPOL | + ATMEL_HLCDC_VSPDLYS | ATMEL_HLCDC_VSPDLYE | + ATMEL_HLCDC_DISPPOL | ATMEL_HLCDC_DISPDLY | + ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO | + ATMEL_HLCDC_GUARDTIME_MASK, + cfg); + + fb = plane->fb; + plane->fb = old_fb; + + return atmel_hlcdc_plane_update_with_mode(plane, c, fb, 0, 0, + adj->hdisplay, adj->vdisplay, + x << 16, y << 16, + adj->hdisplay << 16, + adj->vdisplay << 16, + adj); +} + +int atmel_hlcdc_crtc_mode_set_base(struct drm_crtc *c, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_plane *plane = c->primary; + struct drm_framebuffer *fb = plane->fb; + struct drm_display_mode *mode = &c->hwmode; + + plane->fb = old_fb; + + return plane->funcs->update_plane(plane, c, fb, + 0, 0, + mode->hdisplay, + mode->vdisplay, + x << 16, y << 16, + mode->hdisplay << 16, + mode->vdisplay << 16); +} + +static void atmel_hlcdc_crtc_prepare(struct drm_crtc *crtc) +{ + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); +} + +static void atmel_hlcdc_crtc_commit(struct drm_crtc *crtc) +{ + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON); +} + +static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void atmel_hlcdc_crtc_disable(struct drm_crtc *crtc) +{ + struct drm_plane *plane; + + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + crtc->primary->funcs->disable_plane(crtc->primary); + + drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) { + if (plane->crtc != crtc) + continue; + + plane->funcs->disable_plane(crtc->primary); + plane->crtc = NULL; + } +} + +static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = { + .mode_fixup = atmel_hlcdc_crtc_mode_fixup, + .dpms = atmel_hlcdc_crtc_dpms, + .mode_set = atmel_hlcdc_crtc_mode_set, + .mode_set_base = atmel_hlcdc_crtc_mode_set_base, + .prepare = atmel_hlcdc_crtc_prepare, + .commit = atmel_hlcdc_crtc_commit, + .disable = atmel_hlcdc_crtc_disable, +}; + +static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + + drm_crtc_cleanup(c); + kfree(crtc); +} + +void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *c, + struct drm_file *file) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct drm_pending_vblank_event *event; + struct drm_device *dev = c->dev; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + event = crtc->event; + if (event && event->base.file_priv == file) { + event->base.destroy(&event->base); + drm_vblank_put(dev, crtc->id); + crtc->event = NULL; + } + spin_unlock_irqrestore(&dev->event_lock, flags); +} + +static void atmel_hlcdc_crtc_finish_page_flip(struct atmel_hlcdc_crtc *crtc) +{ + struct drm_device *dev = crtc->base.dev; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + if (crtc->event) { + drm_send_vblank_event(dev, crtc->id, crtc->event); + drm_vblank_put(dev, crtc->id); + crtc->event = NULL; + } + spin_unlock_irqrestore(&dev->event_lock, flags); +} + +void atmel_hlcdc_crtc_irq(struct drm_crtc *c) +{ + drm_handle_vblank(c->dev, 0); + atmel_hlcdc_crtc_finish_page_flip(drm_crtc_to_atmel_hlcdc_crtc(c)); +} + +static int atmel_hlcdc_crtc_page_flip(struct drm_crtc *c, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t page_flip_flags) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct atmel_hlcdc_plane_update_req req; + struct drm_plane *plane = c->primary; + struct drm_device *dev = c->dev; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&dev->event_lock, flags); + if (crtc->event) + ret = -EBUSY; + spin_unlock_irqrestore(&dev->event_lock, flags); + + if (ret) + return ret; + + memset(&req, 0, sizeof(req)); + req.crtc_x = 0; + req.crtc_y = 0; + req.crtc_h = c->mode.crtc_vdisplay; + req.crtc_w = c->mode.crtc_hdisplay; + req.src_x = c->x << 16; + req.src_y = c->y << 16; + req.src_w = req.crtc_w << 16; + req.src_h = req.crtc_h << 16; + req.fb = fb; + + ret = atmel_hlcdc_plane_prepare_update_req(plane, &req, &c->hwmode); + if (ret) + return ret; + + if (event) { + drm_vblank_get(c->dev, crtc->id); + spin_lock_irqsave(&dev->event_lock, flags); + crtc->event = event; + spin_unlock_irqrestore(&dev->event_lock, flags); + } + + ret = atmel_hlcdc_plane_apply_update_req(plane, &req); + if (ret) + crtc->event = NULL; + else + plane->fb = fb; + + return ret; +} + +static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = { + .page_flip = atmel_hlcdc_crtc_page_flip, + .set_config = drm_crtc_helper_set_config, + .destroy = atmel_hlcdc_crtc_destroy, +}; + +int atmel_hlcdc_crtc_create(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct atmel_hlcdc_planes *planes = dc->planes; + struct atmel_hlcdc_crtc *crtc; + int ret; + int i; + + crtc = kzalloc(sizeof(*crtc), GFP_KERNEL); + if (!crtc) + return -ENOMEM; + + crtc->dpms = DRM_MODE_DPMS_OFF; + crtc->dc = dc; + + ret = drm_crtc_init_with_planes(dev, &crtc->base, + &planes->primary->base, + planes->cursor ? &planes->cursor->base : NULL, + &atmel_hlcdc_crtc_funcs); + if (ret < 0) + goto fail; + + crtc->id = drm_crtc_index(&crtc->base); + + if (planes->cursor) + planes->cursor->base.possible_crtcs = 1 << crtc->id; + + for (i = 0; i < planes->noverlays; i++) + planes->overlays[i]->base.possible_crtcs = 1 << crtc->id; + + drm_crtc_helper_add(&crtc->base, &lcdc_crtc_helper_funcs); + + dc->crtc = &crtc->base; + + return 0; + +fail: + atmel_hlcdc_crtc_destroy(&crtc->base); + return ret; +} + diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c new file mode 100644 index 000000000000..7320a6c6613f --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c @@ -0,0 +1,579 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/clk.h> +#include <linux/irq.h> +#include <linux/irqchip.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> + +#include "atmel_hlcdc_dc.h" + +#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8 + +static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = { + { + .name = "base", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x40, + .id = 0, + .type = ATMEL_HLCDC_BASE_LAYER, + .nconfigs = 7, + .layout = { + .xstride = { 2 }, + .default_color = 3, + .general_config = 4, + .disc_pos = 5, + .disc_size = 6, + }, + }, + { + .name = "overlay1", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x140, + .id = 1, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 10, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, + { + .name = "overlay2", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x240, + .id = 2, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 10, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, + { + .name = "high-end-overlay", + .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats, + .regs_offset = 0x340, + .id = 3, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 42, + .layout = { + .pos = 2, + .size = 3, + .memsize = 4, + .xstride = { 5, 7 }, + .pstride = { 6, 8 }, + .default_color = 9, + .chroma_key = 10, + .chroma_key_mask = 11, + .general_config = 12, + .csc = 14, + }, + }, + { + .name = "cursor", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x440, + .id = 4, + .type = ATMEL_HLCDC_CURSOR_LAYER, + .nconfigs = 10, + .max_width = 128, + .max_height = 128, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, +}; + +static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = { + .min_width = 0, + .min_height = 0, + .max_width = 2048, + .max_height = 2048, + .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers), + .layers = atmel_hlcdc_sama5d3_layers, +}; + +static const struct of_device_id atmel_hlcdc_of_match[] = { + { + .compatible = "atmel,sama5d3-hlcdc", + .data = &atmel_hlcdc_dc_sama5d3, + }, + { /* sentinel */ }, +}; + +int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc, + struct drm_display_mode *mode) +{ + int vfront_porch = mode->vsync_start - mode->vdisplay; + int vback_porch = mode->vtotal - mode->vsync_end; + int vsync_len = mode->vsync_end - mode->vsync_start; + int hfront_porch = mode->hsync_start - mode->hdisplay; + int hback_porch = mode->htotal - mode->hsync_end; + int hsync_len = mode->hsync_end - mode->hsync_start; + + if (hsync_len > 0x40 || hsync_len < 1) + return MODE_HSYNC; + + if (vsync_len > 0x40 || vsync_len < 1) + return MODE_VSYNC; + + if (hfront_porch > 0x200 || hfront_porch < 1 || + hback_porch > 0x200 || hback_porch < 1 || + mode->hdisplay < 1) + return MODE_H_ILLEGAL; + + if (vfront_porch > 0x40 || vfront_porch < 1 || + vback_porch > 0x40 || vback_porch < 0 || + mode->vdisplay < 1) + return MODE_V_ILLEGAL; + + return MODE_OK; +} + +static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data) +{ + struct drm_device *dev = data; + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned long status; + unsigned int imr, isr; + int i; + + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr); + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr); + status = imr & isr; + if (!status) + return IRQ_NONE; + + if (status & ATMEL_HLCDC_SOF) + atmel_hlcdc_crtc_irq(dc->crtc); + + for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) { + struct atmel_hlcdc_layer *layer = dc->layers[i]; + + if (!(ATMEL_HLCDC_LAYER_STATUS(i) & status) || !layer) + continue; + + atmel_hlcdc_layer_irq(layer); + } + + return IRQ_HANDLED; +} + +static struct drm_framebuffer *atmel_hlcdc_fb_create(struct drm_device *dev, + struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) +{ + return drm_fb_cma_create(dev, file_priv, mode_cmd); +} + +static void atmel_hlcdc_fb_output_poll_changed(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + if (dc->fbdev) { + drm_fbdev_cma_hotplug_event(dc->fbdev); + } else { + dc->fbdev = drm_fbdev_cma_init(dev, 24, + dev->mode_config.num_crtc, + dev->mode_config.num_connector); + if (IS_ERR(dc->fbdev)) + dc->fbdev = NULL; + } +} + +static const struct drm_mode_config_funcs mode_config_funcs = { + .fb_create = atmel_hlcdc_fb_create, + .output_poll_changed = atmel_hlcdc_fb_output_poll_changed, +}; + +static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct atmel_hlcdc_planes *planes; + int ret; + int i; + + drm_mode_config_init(dev); + + ret = atmel_hlcdc_create_outputs(dev); + if (ret) { + dev_err(dev->dev, "failed to create panel: %d\n", ret); + return ret; + } + + planes = atmel_hlcdc_create_planes(dev); + if (IS_ERR(planes)) { + dev_err(dev->dev, "failed to create planes\n"); + return PTR_ERR(planes); + } + + dc->planes = planes; + + dc->layers[planes->primary->layer.desc->id] = + &planes->primary->layer; + + if (planes->cursor) + dc->layers[planes->cursor->layer.desc->id] = + &planes->cursor->layer; + + for (i = 0; i < planes->noverlays; i++) + dc->layers[planes->overlays[i]->layer.desc->id] = + &planes->overlays[i]->layer; + + ret = atmel_hlcdc_crtc_create(dev); + if (ret) { + dev_err(dev->dev, "failed to create crtc\n"); + return ret; + } + + dev->mode_config.min_width = dc->desc->min_width; + dev->mode_config.min_height = dc->desc->min_height; + dev->mode_config.max_width = dc->desc->max_width; + dev->mode_config.max_height = dc->desc->max_height; + dev->mode_config.funcs = &mode_config_funcs; + + return 0; +} + +static int atmel_hlcdc_dc_load(struct drm_device *dev) +{ + struct platform_device *pdev = to_platform_device(dev->dev); + const struct of_device_id *match; + struct atmel_hlcdc_dc *dc; + int ret; + + match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node); + if (!match) { + dev_err(&pdev->dev, "invalid compatible string\n"); + return -ENODEV; + } + + if (!match->data) { + dev_err(&pdev->dev, "invalid hlcdc description\n"); + return -EINVAL; + } + + dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL); + if (!dc) + return -ENOMEM; + + dc->wq = alloc_ordered_workqueue("atmel-hlcdc-dc", 0); + if (!dc->wq) + return -ENOMEM; + + dc->desc = match->data; + dc->hlcdc = dev_get_drvdata(dev->dev->parent); + dev->dev_private = dc; + + ret = clk_prepare_enable(dc->hlcdc->periph_clk); + if (ret) { + dev_err(dev->dev, "failed to enable periph_clk\n"); + goto err_destroy_wq; + } + + pm_runtime_enable(dev->dev); + + pm_runtime_put_sync(dev->dev); + + ret = atmel_hlcdc_dc_modeset_init(dev); + if (ret < 0) { + dev_err(dev->dev, "failed to initialize mode setting\n"); + goto err_periph_clk_disable; + } + + ret = drm_vblank_init(dev, 1); + if (ret < 0) { + dev_err(dev->dev, "failed to initialize vblank\n"); + goto err_periph_clk_disable; + } + + pm_runtime_get_sync(dev->dev); + ret = drm_irq_install(dev, dc->hlcdc->irq); + pm_runtime_put_sync(dev->dev); + if (ret < 0) { + dev_err(dev->dev, "failed to install IRQ handler\n"); + goto err_periph_clk_disable; + } + + platform_set_drvdata(pdev, dev); + + drm_kms_helper_poll_init(dev); + + /* force connectors detection */ + drm_helper_hpd_irq_event(dev); + + return 0; + +err_periph_clk_disable: + pm_runtime_disable(dev->dev); + clk_disable_unprepare(dc->hlcdc->periph_clk); + +err_destroy_wq: + destroy_workqueue(dc->wq); + + return ret; +} + +static void atmel_hlcdc_dc_unload(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + if (dc->fbdev) + drm_fbdev_cma_fini(dc->fbdev); + flush_workqueue(dc->wq); + drm_kms_helper_poll_fini(dev); + drm_mode_config_cleanup(dev); + drm_vblank_cleanup(dev); + + pm_runtime_get_sync(dev->dev); + drm_irq_uninstall(dev); + pm_runtime_put_sync(dev->dev); + + dev->dev_private = NULL; + + pm_runtime_disable(dev->dev); + clk_disable_unprepare(dc->hlcdc->periph_clk); + destroy_workqueue(dc->wq); +} + +static int atmel_hlcdc_dc_connector_plug_all(struct drm_device *dev) +{ + struct drm_connector *connector, *failed; + int ret; + + mutex_lock(&dev->mode_config.mutex); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + ret = drm_connector_register(connector); + if (ret) { + failed = connector; + goto err; + } + } + mutex_unlock(&dev->mode_config.mutex); + return 0; + +err: + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (failed == connector) + break; + + drm_connector_unregister(connector); + } + mutex_unlock(&dev->mode_config.mutex); + + return ret; +} + +static void atmel_hlcdc_dc_connector_unplug_all(struct drm_device *dev) +{ + mutex_lock(&dev->mode_config.mutex); + drm_connector_unplug_all(dev); + mutex_unlock(&dev->mode_config.mutex); +} + +static void atmel_hlcdc_dc_preclose(struct drm_device *dev, + struct drm_file *file) +{ + struct drm_crtc *crtc; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) + atmel_hlcdc_crtc_cancel_page_flip(crtc, file); +} + +static void atmel_hlcdc_dc_lastclose(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + drm_fbdev_cma_restore_mode(dc->fbdev); +} + +static int atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned int cfg = 0; + int i; + + /* Enable interrupts on activated layers */ + for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) { + if (dc->layers[i]) + cfg |= ATMEL_HLCDC_LAYER_STATUS(i); + } + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg); + + return 0; +} + +static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned int isr; + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff); + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr); +} + +static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev, int crtc) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + /* Enable SOF (Start Of Frame) interrupt for vblank counting */ + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, ATMEL_HLCDC_SOF); + + return 0; +} + +static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev, int crtc) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, ATMEL_HLCDC_SOF); +} + +static const struct file_operations fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .poll = drm_poll, + .read = drm_read, + .llseek = no_llseek, + .mmap = drm_gem_cma_mmap, +}; + +static struct drm_driver atmel_hlcdc_dc_driver = { + .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET, + .preclose = atmel_hlcdc_dc_preclose, + .lastclose = atmel_hlcdc_dc_lastclose, + .irq_handler = atmel_hlcdc_dc_irq_handler, + .irq_preinstall = atmel_hlcdc_dc_irq_uninstall, + .irq_postinstall = atmel_hlcdc_dc_irq_postinstall, + .irq_uninstall = atmel_hlcdc_dc_irq_uninstall, + .get_vblank_counter = drm_vblank_count, + .enable_vblank = atmel_hlcdc_dc_enable_vblank, + .disable_vblank = atmel_hlcdc_dc_disable_vblank, + .gem_free_object = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + .dumb_create = drm_gem_cma_dumb_create, + .dumb_map_offset = drm_gem_cma_dumb_map_offset, + .dumb_destroy = drm_gem_dumb_destroy, + .fops = &fops, + .name = "atmel-hlcdc", + .desc = "Atmel HLCD Controller DRM", + .date = "20141504", + .major = 1, + .minor = 0, +}; + +static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev) +{ + struct drm_device *ddev; + int ret; + + ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev); + if (!ddev) + return -ENOMEM; + + ret = drm_dev_set_unique(ddev, dev_name(ddev->dev)); + if (ret) + goto err_unref; + + ret = atmel_hlcdc_dc_load(ddev); + if (ret) + goto err_unref; + + ret = drm_dev_register(ddev, 0); + if (ret) + goto err_unload; + + ret = atmel_hlcdc_dc_connector_plug_all(ddev); + if (ret) + goto err_unregister; + + return 0; + +err_unregister: + drm_dev_unregister(ddev); + +err_unload: + atmel_hlcdc_dc_unload(ddev); + +err_unref: + drm_dev_unref(ddev); + + return ret; +} + +static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev) +{ + struct drm_device *ddev = platform_get_drvdata(pdev); + + atmel_hlcdc_dc_connector_unplug_all(ddev); + drm_dev_unregister(ddev); + atmel_hlcdc_dc_unload(ddev); + drm_dev_unref(ddev); + + return 0; +} + +static const struct of_device_id atmel_hlcdc_dc_of_match[] = { + { .compatible = "atmel,hlcdc-display-controller" }, + { }, +}; + +static struct platform_driver atmel_hlcdc_dc_platform_driver = { + .probe = atmel_hlcdc_dc_drm_probe, + .remove = atmel_hlcdc_dc_drm_remove, + .driver = { + .name = "atmel-hlcdc-display-controller", + .of_match_table = atmel_hlcdc_dc_of_match, + }, +}; +module_platform_driver(atmel_hlcdc_dc_platform_driver); + +MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>"); +MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); +MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:atmel-hlcdc-dc"); diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h new file mode 100644 index 000000000000..7bc96af3397a --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h @@ -0,0 +1,213 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef DRM_ATMEL_HLCDC_H +#define DRM_ATMEL_HLCDC_H + +#include <linux/clk.h> +#include <linux/irqdomain.h> +#include <linux/pwm.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_panel.h> +#include <drm/drmP.h> + +#include "atmel_hlcdc_layer.h" + +#define ATMEL_HLCDC_MAX_LAYERS 5 + +/** + * Atmel HLCDC Display Controller description structure. + * + * This structure describe the HLCDC IP capabilities and depends on the + * HLCDC IP version (or Atmel SoC family). + * + * @min_width: minimum width supported by the Display Controller + * @min_height: minimum height supported by the Display Controller + * @max_width: maximum width supported by the Display Controller + * @max_height: maximum height supported by the Display Controller + * @layers: a layer description table describing available layers + * @nlayers: layer description table size + */ +struct atmel_hlcdc_dc_desc { + int min_width; + int min_height; + int max_width; + int max_height; + const struct atmel_hlcdc_layer_desc *layers; + int nlayers; +}; + +/** + * Atmel HLCDC Plane properties. + * + * This structure stores plane property definitions. + * + * @alpha: alpha blending (or transparency) property + * @rotation: rotation property + */ +struct atmel_hlcdc_plane_properties { + struct drm_property *alpha; + struct drm_property *rotation; +}; + +/** + * Atmel HLCDC Plane. + * + * @base: base DRM plane structure + * @layer: HLCDC layer structure + * @properties: pointer to the property definitions structure + * @rotation: current rotation status + */ +struct atmel_hlcdc_plane { + struct drm_plane base; + struct atmel_hlcdc_layer layer; + struct atmel_hlcdc_plane_properties *properties; + unsigned int rotation; +}; + +static inline struct atmel_hlcdc_plane * +drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p) +{ + return container_of(p, struct atmel_hlcdc_plane, base); +} + +static inline struct atmel_hlcdc_plane * +atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *l) +{ + return container_of(l, struct atmel_hlcdc_plane, layer); +} + +/** + * Atmel HLCDC Plane update request structure. + * + * @crtc_x: x position of the plane relative to the CRTC + * @crtc_y: y position of the plane relative to the CRTC + * @crtc_w: visible width of the plane + * @crtc_h: visible height of the plane + * @src_x: x buffer position + * @src_y: y buffer position + * @src_w: buffer width + * @src_h: buffer height + * @fb: framebuffer object object + * @bpp: bytes per pixel deduced from pixel_format + * @offsets: offsets to apply to the GEM buffers + * @xstride: value to add to the pixel pointer between each line + * @pstride: value to add to the pixel pointer between each pixel + * @nplanes: number of planes (deduced from pixel_format) + */ +struct atmel_hlcdc_plane_update_req { + int crtc_x; + int crtc_y; + unsigned int crtc_w; + unsigned int crtc_h; + uint32_t src_x; + uint32_t src_y; + uint32_t src_w; + uint32_t src_h; + struct drm_framebuffer *fb; + + /* These fields are private and should not be touched */ + int bpp[ATMEL_HLCDC_MAX_PLANES]; + unsigned int offsets[ATMEL_HLCDC_MAX_PLANES]; + int xstride[ATMEL_HLCDC_MAX_PLANES]; + int pstride[ATMEL_HLCDC_MAX_PLANES]; + int nplanes; +}; + +/** + * Atmel HLCDC Planes. + * + * This structure stores the instantiated HLCDC Planes and can be accessed by + * the HLCDC Display Controller or the HLCDC CRTC. + * + * @primary: primary plane + * @cursor: hardware cursor plane + * @overlays: overlay plane table + * @noverlays: number of overlay planes + */ +struct atmel_hlcdc_planes { + struct atmel_hlcdc_plane *primary; + struct atmel_hlcdc_plane *cursor; + struct atmel_hlcdc_plane **overlays; + int noverlays; +}; + +/** + * Atmel HLCDC Display Controller. + * + * @desc: HLCDC Display Controller description + * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device + * @fbdev: framebuffer device attached to the Display Controller + * @crtc: CRTC provided by the display controller + * @planes: instantiated planes + * @layers: active HLCDC layer + * @wq: display controller workqueue + */ +struct atmel_hlcdc_dc { + const struct atmel_hlcdc_dc_desc *desc; + struct atmel_hlcdc *hlcdc; + struct drm_fbdev_cma *fbdev; + struct drm_crtc *crtc; + struct atmel_hlcdc_planes *planes; + struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS]; + struct workqueue_struct *wq; +}; + +extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats; +extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats; + +int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc, + struct drm_display_mode *mode); + +struct atmel_hlcdc_planes * +atmel_hlcdc_create_planes(struct drm_device *dev); + +int atmel_hlcdc_plane_prepare_update_req(struct drm_plane *p, + struct atmel_hlcdc_plane_update_req *req, + const struct drm_display_mode *mode); + +int atmel_hlcdc_plane_apply_update_req(struct drm_plane *p, + struct atmel_hlcdc_plane_update_req *req); + +int atmel_hlcdc_plane_update_with_mode(struct drm_plane *p, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int crtc_x, int crtc_y, + unsigned int crtc_w, + unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h, + const struct drm_display_mode *mode); + +void atmel_hlcdc_crtc_irq(struct drm_crtc *c); + +void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *crtc, + struct drm_file *file); + +int atmel_hlcdc_crtc_create(struct drm_device *dev); + +int atmel_hlcdc_create_outputs(struct drm_device *dev); + +#endif /* DRM_ATMEL_HLCDC_H */ diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c new file mode 100644 index 000000000000..063d2a7b941f --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c @@ -0,0 +1,667 @@ +/* + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/dma-mapping.h> +#include <linux/interrupt.h> + +#include "atmel_hlcdc_dc.h" + +static void +atmel_hlcdc_layer_fb_flip_release(struct drm_flip_work *work, void *val) +{ + struct atmel_hlcdc_layer_fb_flip *flip = val; + + if (flip->fb) + drm_framebuffer_unreference(flip->fb); + kfree(flip); +} + +static void +atmel_hlcdc_layer_fb_flip_destroy(struct atmel_hlcdc_layer_fb_flip *flip) +{ + if (flip->fb) + drm_framebuffer_unreference(flip->fb); + kfree(flip->task); + kfree(flip); +} + +static void +atmel_hlcdc_layer_fb_flip_release_queue(struct atmel_hlcdc_layer *layer, + struct atmel_hlcdc_layer_fb_flip *flip) +{ + int i; + + if (!flip) + return; + + for (i = 0; i < layer->max_planes; i++) { + if (!flip->dscrs[i]) + break; + + flip->dscrs[i]->status = 0; + flip->dscrs[i] = NULL; + } + + drm_flip_work_queue_task(&layer->gc, flip->task); + drm_flip_work_commit(&layer->gc, layer->wq); +} + +static void atmel_hlcdc_layer_update_reset(struct atmel_hlcdc_layer *layer, + int id) +{ + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct atmel_hlcdc_layer_update_slot *slot; + + if (id < 0 || id > 1) + return; + + slot = &upd->slots[id]; + bitmap_clear(slot->updated_configs, 0, layer->desc->nconfigs); + memset(slot->configs, 0, + sizeof(*slot->configs) * layer->desc->nconfigs); + + if (slot->fb_flip) { + atmel_hlcdc_layer_fb_flip_release_queue(layer, slot->fb_flip); + slot->fb_flip = NULL; + } +} + +static void atmel_hlcdc_layer_update_apply(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + const struct atmel_hlcdc_layer_desc *desc = layer->desc; + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct regmap *regmap = layer->hlcdc->regmap; + struct atmel_hlcdc_layer_update_slot *slot; + struct atmel_hlcdc_layer_fb_flip *fb_flip; + struct atmel_hlcdc_dma_channel_dscr *dscr; + unsigned int cfg; + u32 action = 0; + int i = 0; + + if (upd->pending < 0 || upd->pending > 1) + return; + + slot = &upd->slots[upd->pending]; + + for_each_set_bit(cfg, slot->updated_configs, layer->desc->nconfigs) { + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_CFG(layer, cfg), + slot->configs[cfg]); + action |= ATMEL_HLCDC_LAYER_UPDATE; + } + + fb_flip = slot->fb_flip; + + if (!fb_flip->fb) + goto apply; + + if (dma->status == ATMEL_HLCDC_LAYER_DISABLED) { + for (i = 0; i < fb_flip->ngems; i++) { + dscr = fb_flip->dscrs[i]; + dscr->ctrl = ATMEL_HLCDC_LAYER_DFETCH | + ATMEL_HLCDC_LAYER_DMA_IRQ | + ATMEL_HLCDC_LAYER_ADD_IRQ | + ATMEL_HLCDC_LAYER_DONE_IRQ; + + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_PLANE_ADDR(i), + dscr->addr); + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_PLANE_CTRL(i), + dscr->ctrl); + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_PLANE_NEXT(i), + dscr->next); + } + + action |= ATMEL_HLCDC_LAYER_DMA_CHAN; + dma->status = ATMEL_HLCDC_LAYER_ENABLED; + } else { + for (i = 0; i < fb_flip->ngems; i++) { + dscr = fb_flip->dscrs[i]; + dscr->ctrl = ATMEL_HLCDC_LAYER_DFETCH | + ATMEL_HLCDC_LAYER_DMA_IRQ | + ATMEL_HLCDC_LAYER_DSCR_IRQ | + ATMEL_HLCDC_LAYER_DONE_IRQ; + + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_PLANE_HEAD(i), + dscr->next); + } + + action |= ATMEL_HLCDC_LAYER_A2Q; + } + + /* Release unneeded descriptors */ + for (i = fb_flip->ngems; i < layer->max_planes; i++) { + fb_flip->dscrs[i]->status = 0; + fb_flip->dscrs[i] = NULL; + } + + dma->queue = fb_flip; + slot->fb_flip = NULL; + +apply: + if (action) + regmap_write(regmap, + desc->regs_offset + ATMEL_HLCDC_LAYER_CHER, + action); + + atmel_hlcdc_layer_update_reset(layer, upd->pending); + + upd->pending = -1; +} + +void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + const struct atmel_hlcdc_layer_desc *desc = layer->desc; + struct regmap *regmap = layer->hlcdc->regmap; + struct atmel_hlcdc_layer_fb_flip *flip; + unsigned long flags; + unsigned int isr, imr; + unsigned int status; + unsigned int plane_status; + u32 flip_status; + + int i; + + regmap_read(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_IMR, &imr); + regmap_read(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_ISR, &isr); + status = imr & isr; + if (!status) + return; + + spin_lock_irqsave(&layer->lock, flags); + + flip = dma->queue ? dma->queue : dma->cur; + + if (!flip) { + spin_unlock_irqrestore(&layer->lock, flags); + return; + } + + /* + * Set LOADED and DONE flags: they'll be cleared if at least one + * memory plane is not LOADED or DONE. + */ + flip_status = ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED | + ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE; + for (i = 0; i < flip->ngems; i++) { + plane_status = (status >> (8 * i)); + + if (plane_status & + (ATMEL_HLCDC_LAYER_ADD_IRQ | + ATMEL_HLCDC_LAYER_DSCR_IRQ) & + ~flip->dscrs[i]->ctrl) { + flip->dscrs[i]->status |= + ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED; + flip->dscrs[i]->ctrl |= + ATMEL_HLCDC_LAYER_ADD_IRQ | + ATMEL_HLCDC_LAYER_DSCR_IRQ; + } + + if (plane_status & + ATMEL_HLCDC_LAYER_DONE_IRQ & + ~flip->dscrs[i]->ctrl) { + flip->dscrs[i]->status |= + ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE; + flip->dscrs[i]->ctrl |= + ATMEL_HLCDC_LAYER_DONE_IRQ; + } + + if (plane_status & ATMEL_HLCDC_LAYER_OVR_IRQ) + flip->dscrs[i]->status |= + ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN; + + /* + * Clear LOADED and DONE flags if the memory plane is either + * not LOADED or not DONE. + */ + if (!(flip->dscrs[i]->status & + ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED)) + flip_status &= ~ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED; + + if (!(flip->dscrs[i]->status & + ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE)) + flip_status &= ~ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE; + + /* + * An overrun on one memory plane impact the whole framebuffer + * transfer, hence we set the OVERRUN flag as soon as there's + * one memory plane reporting such an overrun. + */ + flip_status |= flip->dscrs[i]->status & + ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN; + } + + /* Get changed bits */ + flip_status ^= flip->status; + flip->status |= flip_status; + + if (flip_status & ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED) { + atmel_hlcdc_layer_fb_flip_release_queue(layer, dma->cur); + dma->cur = dma->queue; + dma->queue = NULL; + } + + if (flip_status & ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE) { + atmel_hlcdc_layer_fb_flip_release_queue(layer, dma->cur); + dma->cur = NULL; + } + + if (flip_status & ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN) { + regmap_write(regmap, + desc->regs_offset + ATMEL_HLCDC_LAYER_CHDR, + ATMEL_HLCDC_LAYER_RST); + if (dma->queue) + atmel_hlcdc_layer_fb_flip_release_queue(layer, + dma->queue); + + if (dma->cur) + atmel_hlcdc_layer_fb_flip_release_queue(layer, + dma->cur); + + dma->cur = NULL; + dma->queue = NULL; + } + + if (!dma->queue) { + atmel_hlcdc_layer_update_apply(layer); + + if (!dma->cur) + dma->status = ATMEL_HLCDC_LAYER_DISABLED; + } + + spin_unlock_irqrestore(&layer->lock, flags); +} + +int atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct regmap *regmap = layer->hlcdc->regmap; + const struct atmel_hlcdc_layer_desc *desc = layer->desc; + unsigned long flags; + unsigned int isr; + + spin_lock_irqsave(&layer->lock, flags); + + /* Disable the layer */ + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CHDR, + ATMEL_HLCDC_LAYER_RST); + + /* Clear all pending interrupts */ + regmap_read(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_ISR, &isr); + + /* Discard current and queued framebuffer transfers. */ + if (dma->cur) { + atmel_hlcdc_layer_fb_flip_release_queue(layer, dma->cur); + dma->cur = NULL; + } + + if (dma->queue) { + atmel_hlcdc_layer_fb_flip_release_queue(layer, dma->queue); + dma->queue = NULL; + } + + /* + * Then discard the pending update request (if any) to prevent + * DMA irq handler from restarting the DMA channel after it has + * been disabled. + */ + if (upd->pending >= 0) { + atmel_hlcdc_layer_update_reset(layer, upd->pending); + upd->pending = -1; + } + + dma->status = ATMEL_HLCDC_LAYER_DISABLED; + + spin_unlock_irqrestore(&layer->lock, flags); + + return 0; +} + +int atmel_hlcdc_layer_update_start(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct regmap *regmap = layer->hlcdc->regmap; + struct atmel_hlcdc_layer_fb_flip *fb_flip; + struct atmel_hlcdc_layer_update_slot *slot; + unsigned long flags; + int i, j = 0; + + fb_flip = kzalloc(sizeof(*fb_flip), GFP_KERNEL); + if (!fb_flip) + return -ENOMEM; + + fb_flip->task = drm_flip_work_allocate_task(fb_flip, GFP_KERNEL); + if (!fb_flip->task) { + kfree(fb_flip); + return -ENOMEM; + } + + spin_lock_irqsave(&layer->lock, flags); + + upd->next = upd->pending ? 0 : 1; + + slot = &upd->slots[upd->next]; + + for (i = 0; i < layer->max_planes * 4; i++) { + if (!dma->dscrs[i].status) { + fb_flip->dscrs[j++] = &dma->dscrs[i]; + dma->dscrs[i].status = + ATMEL_HLCDC_DMA_CHANNEL_DSCR_RESERVED; + if (j == layer->max_planes) + break; + } + } + + if (j < layer->max_planes) { + for (i = 0; i < j; i++) + fb_flip->dscrs[i]->status = 0; + } + + if (j < layer->max_planes) { + spin_unlock_irqrestore(&layer->lock, flags); + atmel_hlcdc_layer_fb_flip_destroy(fb_flip); + return -EBUSY; + } + + slot->fb_flip = fb_flip; + + if (upd->pending >= 0) { + memcpy(slot->configs, + upd->slots[upd->pending].configs, + layer->desc->nconfigs * sizeof(u32)); + memcpy(slot->updated_configs, + upd->slots[upd->pending].updated_configs, + DIV_ROUND_UP(layer->desc->nconfigs, + BITS_PER_BYTE * sizeof(unsigned long)) * + sizeof(unsigned long)); + slot->fb_flip->fb = upd->slots[upd->pending].fb_flip->fb; + if (upd->slots[upd->pending].fb_flip->fb) { + slot->fb_flip->fb = + upd->slots[upd->pending].fb_flip->fb; + slot->fb_flip->ngems = + upd->slots[upd->pending].fb_flip->ngems; + drm_framebuffer_reference(slot->fb_flip->fb); + } + } else { + regmap_bulk_read(regmap, + layer->desc->regs_offset + + ATMEL_HLCDC_LAYER_CFG(layer, 0), + upd->slots[upd->next].configs, + layer->desc->nconfigs); + } + + spin_unlock_irqrestore(&layer->lock, flags); + + return 0; +} + +void atmel_hlcdc_layer_update_rollback(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_update *upd = &layer->update; + + atmel_hlcdc_layer_update_reset(layer, upd->next); + upd->next = -1; +} + +void atmel_hlcdc_layer_update_set_fb(struct atmel_hlcdc_layer *layer, + struct drm_framebuffer *fb, + unsigned int *offsets) +{ + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct atmel_hlcdc_layer_fb_flip *fb_flip; + struct atmel_hlcdc_layer_update_slot *slot; + struct atmel_hlcdc_dma_channel_dscr *dscr; + struct drm_framebuffer *old_fb; + int nplanes = 0; + int i; + + if (upd->next < 0 || upd->next > 1) + return; + + if (fb) + nplanes = drm_format_num_planes(fb->pixel_format); + + if (nplanes > layer->max_planes) + return; + + slot = &upd->slots[upd->next]; + + fb_flip = slot->fb_flip; + old_fb = slot->fb_flip->fb; + + for (i = 0; i < nplanes; i++) { + struct drm_gem_cma_object *gem; + + dscr = slot->fb_flip->dscrs[i]; + gem = drm_fb_cma_get_gem_obj(fb, i); + dscr->addr = gem->paddr + offsets[i]; + } + + fb_flip->ngems = nplanes; + fb_flip->fb = fb; + + if (fb) + drm_framebuffer_reference(fb); + + if (old_fb) + drm_framebuffer_unreference(old_fb); +} + +void atmel_hlcdc_layer_update_cfg(struct atmel_hlcdc_layer *layer, int cfg, + u32 mask, u32 val) +{ + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct atmel_hlcdc_layer_update_slot *slot; + + if (upd->next < 0 || upd->next > 1) + return; + + if (cfg >= layer->desc->nconfigs) + return; + + slot = &upd->slots[upd->next]; + slot->configs[cfg] &= ~mask; + slot->configs[cfg] |= (val & mask); + set_bit(cfg, slot->updated_configs); +} + +void atmel_hlcdc_layer_update_commit(struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + struct atmel_hlcdc_layer_update *upd = &layer->update; + struct atmel_hlcdc_layer_update_slot *slot; + unsigned long flags; + + if (upd->next < 0 || upd->next > 1) + return; + + slot = &upd->slots[upd->next]; + + spin_lock_irqsave(&layer->lock, flags); + + /* + * Release pending update request and replace it by the new one. + */ + if (upd->pending >= 0) + atmel_hlcdc_layer_update_reset(layer, upd->pending); + + upd->pending = upd->next; + upd->next = -1; + + if (!dma->queue) + atmel_hlcdc_layer_update_apply(layer); + + spin_unlock_irqrestore(&layer->lock, flags); + + + upd->next = -1; +} + +static int atmel_hlcdc_layer_dma_init(struct drm_device *dev, + struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + dma_addr_t dma_addr; + int i; + + dma->dscrs = dma_alloc_coherent(dev->dev, + layer->max_planes * 4 * + sizeof(*dma->dscrs), + &dma_addr, GFP_KERNEL); + if (!dma->dscrs) + return -ENOMEM; + + for (i = 0; i < layer->max_planes * 4; i++) { + struct atmel_hlcdc_dma_channel_dscr *dscr = &dma->dscrs[i]; + + dscr->next = dma_addr + (i * sizeof(*dscr)); + } + + return 0; +} + +static void atmel_hlcdc_layer_dma_cleanup(struct drm_device *dev, + struct atmel_hlcdc_layer *layer) +{ + struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma; + int i; + + for (i = 0; i < layer->max_planes * 4; i++) { + struct atmel_hlcdc_dma_channel_dscr *dscr = &dma->dscrs[i]; + + dscr->status = 0; + } + + dma_free_coherent(dev->dev, layer->max_planes * 4 * + sizeof(*dma->dscrs), dma->dscrs, + dma->dscrs[0].next); +} + +static int atmel_hlcdc_layer_update_init(struct drm_device *dev, + struct atmel_hlcdc_layer *layer, + const struct atmel_hlcdc_layer_desc *desc) +{ + struct atmel_hlcdc_layer_update *upd = &layer->update; + int updated_size; + void *buffer; + int i; + + updated_size = DIV_ROUND_UP(desc->nconfigs, + BITS_PER_BYTE * + sizeof(unsigned long)); + + buffer = devm_kzalloc(dev->dev, + ((desc->nconfigs * sizeof(u32)) + + (updated_size * sizeof(unsigned long))) * 2, + GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + for (i = 0; i < 2; i++) { + upd->slots[i].updated_configs = buffer; + buffer += updated_size * sizeof(unsigned long); + upd->slots[i].configs = buffer; + buffer += desc->nconfigs * sizeof(u32); + } + + upd->pending = -1; + upd->next = -1; + + return 0; +} + +int atmel_hlcdc_layer_init(struct drm_device *dev, + struct atmel_hlcdc_layer *layer, + const struct atmel_hlcdc_layer_desc *desc) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct regmap *regmap = dc->hlcdc->regmap; + unsigned int tmp; + int ret; + int i; + + layer->hlcdc = dc->hlcdc; + layer->wq = dc->wq; + layer->desc = desc; + + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CHDR, + ATMEL_HLCDC_LAYER_RST); + for (i = 0; i < desc->formats->nformats; i++) { + int nplanes = drm_format_num_planes(desc->formats->formats[i]); + + if (nplanes > layer->max_planes) + layer->max_planes = nplanes; + } + + spin_lock_init(&layer->lock); + drm_flip_work_init(&layer->gc, desc->name, + atmel_hlcdc_layer_fb_flip_release); + ret = atmel_hlcdc_layer_dma_init(dev, layer); + if (ret) + return ret; + + ret = atmel_hlcdc_layer_update_init(dev, layer, desc); + if (ret) + return ret; + + /* Flush Status Register */ + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_IDR, + 0xffffffff); + regmap_read(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_ISR, + &tmp); + + tmp = 0; + for (i = 0; i < layer->max_planes; i++) + tmp |= (ATMEL_HLCDC_LAYER_DMA_IRQ | + ATMEL_HLCDC_LAYER_DSCR_IRQ | + ATMEL_HLCDC_LAYER_ADD_IRQ | + ATMEL_HLCDC_LAYER_DONE_IRQ | + ATMEL_HLCDC_LAYER_OVR_IRQ) << (8 * i); + + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_IER, tmp); + + return 0; +} + +void atmel_hlcdc_layer_cleanup(struct drm_device *dev, + struct atmel_hlcdc_layer *layer) +{ + const struct atmel_hlcdc_layer_desc *desc = layer->desc; + struct regmap *regmap = layer->hlcdc->regmap; + + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_IDR, + 0xffffffff); + regmap_write(regmap, desc->regs_offset + ATMEL_HLCDC_LAYER_CHDR, + ATMEL_HLCDC_LAYER_RST); + + atmel_hlcdc_layer_dma_cleanup(dev, layer); + drm_flip_work_cleanup(&layer->gc); +} diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h new file mode 100644 index 000000000000..27e56c0862ec --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h @@ -0,0 +1,398 @@ +/* + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef DRM_ATMEL_HLCDC_LAYER_H +#define DRM_ATMEL_HLCDC_LAYER_H + +#include <linux/mfd/atmel-hlcdc.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_flip_work.h> +#include <drm/drmP.h> + +#define ATMEL_HLCDC_LAYER_CHER 0x0 +#define ATMEL_HLCDC_LAYER_CHDR 0x4 +#define ATMEL_HLCDC_LAYER_CHSR 0x8 +#define ATMEL_HLCDC_LAYER_DMA_CHAN BIT(0) +#define ATMEL_HLCDC_LAYER_UPDATE BIT(1) +#define ATMEL_HLCDC_LAYER_A2Q BIT(2) +#define ATMEL_HLCDC_LAYER_RST BIT(8) + +#define ATMEL_HLCDC_LAYER_IER 0xc +#define ATMEL_HLCDC_LAYER_IDR 0x10 +#define ATMEL_HLCDC_LAYER_IMR 0x14 +#define ATMEL_HLCDC_LAYER_ISR 0x18 +#define ATMEL_HLCDC_LAYER_DFETCH BIT(0) +#define ATMEL_HLCDC_LAYER_LFETCH BIT(1) +#define ATMEL_HLCDC_LAYER_DMA_IRQ BIT(2) +#define ATMEL_HLCDC_LAYER_DSCR_IRQ BIT(3) +#define ATMEL_HLCDC_LAYER_ADD_IRQ BIT(4) +#define ATMEL_HLCDC_LAYER_DONE_IRQ BIT(5) +#define ATMEL_HLCDC_LAYER_OVR_IRQ BIT(6) + +#define ATMEL_HLCDC_LAYER_PLANE_HEAD(n) (((n) * 0x10) + 0x1c) +#define ATMEL_HLCDC_LAYER_PLANE_ADDR(n) (((n) * 0x10) + 0x20) +#define ATMEL_HLCDC_LAYER_PLANE_CTRL(n) (((n) * 0x10) + 0x24) +#define ATMEL_HLCDC_LAYER_PLANE_NEXT(n) (((n) * 0x10) + 0x28) +#define ATMEL_HLCDC_LAYER_CFG(p, c) (((c) * 4) + ((p)->max_planes * 0x10) + 0x1c) + +#define ATMEL_HLCDC_LAYER_DMA_CFG_ID 0 +#define ATMEL_HLCDC_LAYER_DMA_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, ATMEL_HLCDC_LAYER_DMA_CFG_ID) +#define ATMEL_HLCDC_LAYER_DMA_SIF BIT(0) +#define ATMEL_HLCDC_LAYER_DMA_BLEN_MASK GENMASK(5, 4) +#define ATMEL_HLCDC_LAYER_DMA_BLEN_SINGLE (0 << 4) +#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR4 (1 << 4) +#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR8 (2 << 4) +#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 (3 << 4) +#define ATMEL_HLCDC_LAYER_DMA_DLBO BIT(8) +#define ATMEL_HLCDC_LAYER_DMA_ROTDIS BIT(12) +#define ATMEL_HLCDC_LAYER_DMA_LOCKDIS BIT(13) + +#define ATMEL_HLCDC_LAYER_FORMAT_CFG_ID 1 +#define ATMEL_HLCDC_LAYER_FORMAT_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, ATMEL_HLCDC_LAYER_FORMAT_CFG_ID) +#define ATMEL_HLCDC_LAYER_RGB (0 << 0) +#define ATMEL_HLCDC_LAYER_CLUT (1 << 0) +#define ATMEL_HLCDC_LAYER_YUV (2 << 0) +#define ATMEL_HLCDC_RGB_MODE(m) (((m) & 0xf) << 4) +#define ATMEL_HLCDC_CLUT_MODE(m) (((m) & 0x3) << 8) +#define ATMEL_HLCDC_YUV_MODE(m) (((m) & 0xf) << 12) +#define ATMEL_HLCDC_YUV422ROT BIT(16) +#define ATMEL_HLCDC_YUV422SWP BIT(17) +#define ATMEL_HLCDC_DSCALEOPT BIT(20) + +#define ATMEL_HLCDC_XRGB4444_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(0)) +#define ATMEL_HLCDC_ARGB4444_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(1)) +#define ATMEL_HLCDC_RGBA4444_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(2)) +#define ATMEL_HLCDC_RGB565_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(3)) +#define ATMEL_HLCDC_ARGB1555_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(4)) +#define ATMEL_HLCDC_XRGB8888_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(9)) +#define ATMEL_HLCDC_RGB888_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(10)) +#define ATMEL_HLCDC_ARGB8888_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(12)) +#define ATMEL_HLCDC_RGBA8888_MODE (ATMEL_HLCDC_LAYER_RGB | ATMEL_HLCDC_RGB_MODE(13)) + +#define ATMEL_HLCDC_AYUV_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(0)) +#define ATMEL_HLCDC_YUYV_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(1)) +#define ATMEL_HLCDC_UYVY_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(2)) +#define ATMEL_HLCDC_YVYU_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(3)) +#define ATMEL_HLCDC_VYUY_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(4)) +#define ATMEL_HLCDC_NV61_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(5)) +#define ATMEL_HLCDC_YUV422_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(6)) +#define ATMEL_HLCDC_NV21_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(7)) +#define ATMEL_HLCDC_YUV420_MODE (ATMEL_HLCDC_LAYER_YUV | ATMEL_HLCDC_YUV_MODE(8)) + +#define ATMEL_HLCDC_LAYER_POS_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.pos) +#define ATMEL_HLCDC_LAYER_SIZE_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.size) +#define ATMEL_HLCDC_LAYER_MEMSIZE_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.memsize) +#define ATMEL_HLCDC_LAYER_XSTRIDE_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.xstride) +#define ATMEL_HLCDC_LAYER_PSTRIDE_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.pstride) +#define ATMEL_HLCDC_LAYER_DFLTCOLOR_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.default_color) +#define ATMEL_HLCDC_LAYER_CRKEY_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.chroma_key) +#define ATMEL_HLCDC_LAYER_CRKEY_MASK_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.chroma_key_mask) + +#define ATMEL_HLCDC_LAYER_GENERAL_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.general_config) +#define ATMEL_HLCDC_LAYER_CRKEY BIT(0) +#define ATMEL_HLCDC_LAYER_INV BIT(1) +#define ATMEL_HLCDC_LAYER_ITER2BL BIT(2) +#define ATMEL_HLCDC_LAYER_ITER BIT(3) +#define ATMEL_HLCDC_LAYER_REVALPHA BIT(4) +#define ATMEL_HLCDC_LAYER_GAEN BIT(5) +#define ATMEL_HLCDC_LAYER_LAEN BIT(6) +#define ATMEL_HLCDC_LAYER_OVR BIT(7) +#define ATMEL_HLCDC_LAYER_DMA BIT(8) +#define ATMEL_HLCDC_LAYER_REP BIT(9) +#define ATMEL_HLCDC_LAYER_DSTKEY BIT(10) +#define ATMEL_HLCDC_LAYER_DISCEN BIT(11) +#define ATMEL_HLCDC_LAYER_GA_SHIFT 16 +#define ATMEL_HLCDC_LAYER_GA_MASK GENMASK(23, ATMEL_HLCDC_LAYER_GA_SHIFT) + +#define ATMEL_HLCDC_LAYER_CSC_CFG(p, o) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.csc + o) + +#define ATMEL_HLCDC_LAYER_DISC_POS_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.disc_pos) + +#define ATMEL_HLCDC_LAYER_DISC_SIZE_CFG(p) ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.disc_size) + +#define ATMEL_HLCDC_MAX_PLANES 3 + +#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_RESERVED BIT(0) +#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED BIT(1) +#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE BIT(2) +#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN BIT(3) + +/** + * Atmel HLCDC Layer registers layout structure + * + * Each HLCDC layer has its own register organization and a given register + * can be placed differently on 2 different layers depending on its + * capabilities. + * This structure stores common registers layout for a given layer and is + * used by HLCDC layer code to choose the appropriate register to write to + * or to read from. + * + * For all fields, a value of zero means "unsupported". + * + * See Atmel's datasheet for a detailled description of these registers. + * + * @xstride: xstride registers + * @pstride: pstride registers + * @pos: position register + * @size: displayed size register + * @memsize: memory size register + * @default_color: default color register + * @chroma_key: chroma key register + * @chroma_key_mask: chroma key mask register + * @general_config: general layer config register + * @disc_pos: discard area position register + * @disc_size: discard area size register + * @csc: color space conversion register + */ +struct atmel_hlcdc_layer_cfg_layout { + int xstride[ATMEL_HLCDC_MAX_PLANES]; + int pstride[ATMEL_HLCDC_MAX_PLANES]; + int pos; + int size; + int memsize; + int default_color; + int chroma_key; + int chroma_key_mask; + int general_config; + int disc_pos; + int disc_size; + int csc; +}; + +/** + * Atmel HLCDC framebuffer flip structure + * + * This structure is allocated when someone asked for a layer update (most + * likely a DRM plane update, either primary, overlay or cursor plane) and + * released when the layer do not need to reference the framebuffer object + * anymore (i.e. the layer was disabled or updated). + * + * @dscrs: DMA descriptors + * @fb: the referenced framebuffer object + * @ngems: number of GEM objects referenced by the fb element + * @status: fb flip operation status + */ +struct atmel_hlcdc_layer_fb_flip { + struct atmel_hlcdc_dma_channel_dscr *dscrs[ATMEL_HLCDC_MAX_PLANES]; + struct drm_flip_task *task; + struct drm_framebuffer *fb; + int ngems; + u32 status; +}; + +/** + * Atmel HLCDC DMA descriptor structure + * + * This structure is used by the HLCDC DMA engine to schedule a DMA transfer. + * + * The structure fields must remain in this specific order, because they're + * used by the HLCDC DMA engine, which expect them in this order. + * HLCDC DMA descriptors must be aligned on 64 bits. + * + * @addr: buffer DMA address + * @ctrl: DMA transfer options + * @next: next DMA descriptor to fetch + * @gem_flip: the attached gem_flip operation + */ +struct atmel_hlcdc_dma_channel_dscr { + dma_addr_t addr; + u32 ctrl; + dma_addr_t next; + u32 status; +} __aligned(sizeof(u64)); + +/** + * Atmel HLCDC layer types + */ +enum atmel_hlcdc_layer_type { + ATMEL_HLCDC_BASE_LAYER, + ATMEL_HLCDC_OVERLAY_LAYER, + ATMEL_HLCDC_CURSOR_LAYER, + ATMEL_HLCDC_PP_LAYER, +}; + +/** + * Atmel HLCDC Supported formats structure + * + * This structure list all the formats supported by a given layer. + * + * @nformats: number of supported formats + * @formats: supported formats + */ +struct atmel_hlcdc_formats { + int nformats; + uint32_t *formats; +}; + +/** + * Atmel HLCDC Layer description structure + * + * This structure describe the capabilities provided by a given layer. + * + * @name: layer name + * @type: layer type + * @id: layer id + * @regs_offset: offset of the layer registers from the HLCDC registers base + * @nconfigs: number of config registers provided by this layer + * @formats: supported formats + * @layout: config registers layout + * @max_width: maximum width supported by this layer (0 means unlimited) + * @max_height: maximum height supported by this layer (0 means unlimited) + */ +struct atmel_hlcdc_layer_desc { + const char *name; + enum atmel_hlcdc_layer_type type; + int id; + int regs_offset; + int nconfigs; + struct atmel_hlcdc_formats *formats; + struct atmel_hlcdc_layer_cfg_layout layout; + int max_width; + int max_height; +}; + +/** + * Atmel HLCDC Layer Update Slot structure + * + * This structure stores layer update requests to be applied on next frame. + * This is the base structure behind the atomic layer update infrastructure. + * + * Atomic layer update provides a way to update all layer's parameters + * simultaneously. This is needed to avoid incompatible sequential updates + * like this one: + * 1) update layer format from RGB888 (1 plane/buffer) to YUV422 + * (2 planes/buffers) + * 2) the format update is applied but the DMA channel for the second + * plane/buffer is not enabled + * 3) enable the DMA channel for the second plane + * + * @fb_flip: fb_flip object + * @updated_configs: bitmask used to record modified configs + * @configs: new config values + */ +struct atmel_hlcdc_layer_update_slot { + struct atmel_hlcdc_layer_fb_flip *fb_flip; + unsigned long *updated_configs; + u32 *configs; +}; + +/** + * Atmel HLCDC Layer Update structure + * + * This structure provides a way to queue layer update requests. + * + * At a given time there is at most: + * - one pending update request, which means the update request has been + * committed (or validated) and is waiting for the DMA channel(s) to be + * available + * - one request being prepared, which means someone started a layer update + * but has not committed it yet. There cannot be more than one started + * request, because the update lock is taken when starting a layer update + * and release when committing or rolling back the request. + * + * @slots: update slots. One is used for pending request and the other one + * for started update request + * @pending: the pending slot index or -1 if no request is pending + * @next: the started update slot index or -1 no update has been started + */ +struct atmel_hlcdc_layer_update { + struct atmel_hlcdc_layer_update_slot slots[2]; + int pending; + int next; +}; + +enum atmel_hlcdc_layer_dma_channel_status { + ATMEL_HLCDC_LAYER_DISABLED, + ATMEL_HLCDC_LAYER_ENABLED, + ATMEL_HLCDC_LAYER_DISABLING, +}; + +/** + * Atmel HLCDC Layer DMA channel structure + * + * This structure stores information on the DMA channel associated to a + * given layer. + * + * @status: DMA channel status + * @cur: current framebuffer + * @queue: next framebuffer + * @dscrs: allocated DMA descriptors + */ +struct atmel_hlcdc_layer_dma_channel { + enum atmel_hlcdc_layer_dma_channel_status status; + struct atmel_hlcdc_layer_fb_flip *cur; + struct atmel_hlcdc_layer_fb_flip *queue; + struct atmel_hlcdc_dma_channel_dscr *dscrs; +}; + +/** + * Atmel HLCDC Layer structure + * + * This structure stores information on the layer instance. + * + * @desc: layer description + * @max_planes: maximum planes/buffers that can be associated with this layer. + * This depends on the supported formats. + * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device + * @dma: dma channel + * @gc: fb flip garbage collector + * @update: update handler + * @lock: layer lock + */ +struct atmel_hlcdc_layer { + const struct atmel_hlcdc_layer_desc *desc; + int max_planes; + struct atmel_hlcdc *hlcdc; + struct workqueue_struct *wq; + struct drm_flip_work gc; + struct atmel_hlcdc_layer_dma_channel dma; + struct atmel_hlcdc_layer_update update; + spinlock_t lock; +}; + +void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer); + +int atmel_hlcdc_layer_init(struct drm_device *dev, + struct atmel_hlcdc_layer *layer, + const struct atmel_hlcdc_layer_desc *desc); + +void atmel_hlcdc_layer_cleanup(struct drm_device *dev, + struct atmel_hlcdc_layer *layer); + +int atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer); + +int atmel_hlcdc_layer_update_start(struct atmel_hlcdc_layer *layer); + +void atmel_hlcdc_layer_update_cfg(struct atmel_hlcdc_layer *layer, int cfg, + u32 mask, u32 val); + +void atmel_hlcdc_layer_update_set_fb(struct atmel_hlcdc_layer *layer, + struct drm_framebuffer *fb, + unsigned int *offsets); + +void atmel_hlcdc_layer_update_set_finished(struct atmel_hlcdc_layer *layer, + void (*finished)(void *data), + void *finished_data); + +void atmel_hlcdc_layer_update_rollback(struct atmel_hlcdc_layer *layer); + +void atmel_hlcdc_layer_update_commit(struct atmel_hlcdc_layer *layer); + +#endif /* DRM_ATMEL_HLCDC_LAYER_H */ diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c new file mode 100644 index 000000000000..c402192362c5 --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c @@ -0,0 +1,319 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/of_graph.h> + +#include <drm/drmP.h> +#include <drm/drm_panel.h> + +#include "atmel_hlcdc_dc.h" + +/** + * Atmel HLCDC RGB output mode + */ +enum atmel_hlcdc_connector_rgb_mode { + ATMEL_HLCDC_CONNECTOR_RGB444, + ATMEL_HLCDC_CONNECTOR_RGB565, + ATMEL_HLCDC_CONNECTOR_RGB666, + ATMEL_HLCDC_CONNECTOR_RGB888, +}; + +/** + * Atmel HLCDC RGB connector structure + * + * This structure stores RGB slave device information. + * + * @connector: DRM connector + * @encoder: DRM encoder + * @dc: pointer to the atmel_hlcdc_dc structure + * @dpms: current DPMS mode + */ +struct atmel_hlcdc_rgb_output { + struct drm_connector connector; + struct drm_encoder encoder; + struct atmel_hlcdc_dc *dc; + int dpms; +}; + +static inline struct atmel_hlcdc_rgb_output * +drm_connector_to_atmel_hlcdc_rgb_output(struct drm_connector *connector) +{ + return container_of(connector, struct atmel_hlcdc_rgb_output, + connector); +} + +static inline struct atmel_hlcdc_rgb_output * +drm_encoder_to_atmel_hlcdc_rgb_output(struct drm_encoder *encoder) +{ + return container_of(encoder, struct atmel_hlcdc_rgb_output, encoder); +} + +/** + * Atmel HLCDC Panel device structure + * + * This structure is specialization of the slave device structure to + * interface with drm panels. + * + * @base: base slave device fields + * @panel: drm panel attached to this slave device + */ +struct atmel_hlcdc_panel { + struct atmel_hlcdc_rgb_output base; + struct drm_panel *panel; +}; + +static inline struct atmel_hlcdc_panel * +atmel_hlcdc_rgb_output_to_panel(struct atmel_hlcdc_rgb_output *output) +{ + return container_of(output, struct atmel_hlcdc_panel, base); +} + +static void atmel_hlcdc_panel_encoder_dpms(struct drm_encoder *encoder, + int mode) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_encoder_to_atmel_hlcdc_rgb_output(encoder); + struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb); + + if (mode != DRM_MODE_DPMS_ON) + mode = DRM_MODE_DPMS_OFF; + + if (mode == rgb->dpms) + return; + + if (mode != DRM_MODE_DPMS_ON) + drm_panel_disable(panel->panel); + else + drm_panel_enable(panel->panel); + + rgb->dpms = mode; +} + +static bool +atmel_hlcdc_panel_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted) +{ + return true; +} + +static void atmel_hlcdc_panel_encoder_prepare(struct drm_encoder *encoder) +{ + atmel_hlcdc_panel_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); +} + +static void atmel_hlcdc_panel_encoder_commit(struct drm_encoder *encoder) +{ + atmel_hlcdc_panel_encoder_dpms(encoder, DRM_MODE_DPMS_ON); +} + +static void +atmel_hlcdc_rgb_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_encoder_to_atmel_hlcdc_rgb_output(encoder); + struct drm_display_info *info = &rgb->connector.display_info; + unsigned int cfg; + + cfg = 0; + + if (info->num_bus_formats) { + switch (info->bus_formats[0]) { + case MEDIA_BUS_FMT_RGB666_1X18: + cfg |= ATMEL_HLCDC_CONNECTOR_RGB666 << 8; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + cfg |= ATMEL_HLCDC_CONNECTOR_RGB888 << 8; + break; + default: + break; + } + } + + regmap_update_bits(rgb->dc->hlcdc->regmap, ATMEL_HLCDC_CFG(5), + ATMEL_HLCDC_MODE_MASK, + cfg); +} + +static struct drm_encoder_helper_funcs atmel_hlcdc_panel_encoder_helper_funcs = { + .dpms = atmel_hlcdc_panel_encoder_dpms, + .mode_fixup = atmel_hlcdc_panel_encoder_mode_fixup, + .prepare = atmel_hlcdc_panel_encoder_prepare, + .commit = atmel_hlcdc_panel_encoder_commit, + .mode_set = atmel_hlcdc_rgb_encoder_mode_set, +}; + +static void atmel_hlcdc_rgb_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); + memset(encoder, 0, sizeof(*encoder)); +} + +static const struct drm_encoder_funcs atmel_hlcdc_panel_encoder_funcs = { + .destroy = atmel_hlcdc_rgb_encoder_destroy, +}; + +static int atmel_hlcdc_panel_get_modes(struct drm_connector *connector) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_connector_to_atmel_hlcdc_rgb_output(connector); + struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb); + + return panel->panel->funcs->get_modes(panel->panel); +} + +static int atmel_hlcdc_rgb_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_connector_to_atmel_hlcdc_rgb_output(connector); + + return atmel_hlcdc_dc_mode_valid(rgb->dc, mode); +} + + + +static struct drm_encoder * +atmel_hlcdc_rgb_best_encoder(struct drm_connector *connector) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_connector_to_atmel_hlcdc_rgb_output(connector); + + return &rgb->encoder; +} + +static struct drm_connector_helper_funcs atmel_hlcdc_panel_connector_helper_funcs = { + .get_modes = atmel_hlcdc_panel_get_modes, + .mode_valid = atmel_hlcdc_rgb_mode_valid, + .best_encoder = atmel_hlcdc_rgb_best_encoder, +}; + +static enum drm_connector_status +atmel_hlcdc_panel_connector_detect(struct drm_connector *connector, bool force) +{ + return connector_status_connected; +} + +static void +atmel_hlcdc_panel_connector_destroy(struct drm_connector *connector) +{ + struct atmel_hlcdc_rgb_output *rgb = + drm_connector_to_atmel_hlcdc_rgb_output(connector); + struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb); + + drm_panel_detach(panel->panel); + drm_connector_cleanup(connector); +} + +static const struct drm_connector_funcs atmel_hlcdc_panel_connector_funcs = { + .dpms = drm_helper_connector_dpms, + .detect = atmel_hlcdc_panel_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = atmel_hlcdc_panel_connector_destroy, +}; + +static int atmel_hlcdc_create_panel_output(struct drm_device *dev, + struct of_endpoint *ep) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct device_node *np; + struct drm_panel *p = NULL; + struct atmel_hlcdc_panel *panel; + int ret; + + np = of_graph_get_remote_port_parent(ep->local_node); + if (!np) + return -EINVAL; + + p = of_drm_find_panel(np); + of_node_put(np); + + if (!p) + return -EPROBE_DEFER; + + panel = devm_kzalloc(dev->dev, sizeof(*panel), GFP_KERNEL); + if (!panel) + return -EINVAL; + + panel->base.dpms = DRM_MODE_DPMS_OFF; + + panel->base.dc = dc; + + drm_encoder_helper_add(&panel->base.encoder, + &atmel_hlcdc_panel_encoder_helper_funcs); + ret = drm_encoder_init(dev, &panel->base.encoder, + &atmel_hlcdc_panel_encoder_funcs, + DRM_MODE_ENCODER_LVDS); + if (ret) + return ret; + + panel->base.connector.dpms = DRM_MODE_DPMS_OFF; + panel->base.connector.polled = DRM_CONNECTOR_POLL_CONNECT; + drm_connector_helper_add(&panel->base.connector, + &atmel_hlcdc_panel_connector_helper_funcs); + ret = drm_connector_init(dev, &panel->base.connector, + &atmel_hlcdc_panel_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + if (ret) + goto err_encoder_cleanup; + + drm_mode_connector_attach_encoder(&panel->base.connector, + &panel->base.encoder); + panel->base.encoder.possible_crtcs = 0x1; + + drm_panel_attach(p, &panel->base.connector); + panel->panel = p; + + return 0; + +err_encoder_cleanup: + drm_encoder_cleanup(&panel->base.encoder); + + return ret; +} + +int atmel_hlcdc_create_outputs(struct drm_device *dev) +{ + struct device_node *port_np, *np; + struct of_endpoint ep; + int ret; + + port_np = of_get_child_by_name(dev->dev->of_node, "port"); + if (!port_np) + return -EINVAL; + + np = of_get_child_by_name(port_np, "endpoint"); + of_node_put(port_np); + + if (!np) + return -EINVAL; + + ret = of_graph_parse_endpoint(np, &ep); + of_node_put(port_np); + + if (ret) + return ret; + + /* We currently only support panel output */ + return atmel_hlcdc_create_panel_output(dev, &ep); +} diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c new file mode 100644 index 000000000000..c5892dcfd745 --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c @@ -0,0 +1,856 @@ +/* + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "atmel_hlcdc_dc.h" + +#define SUBPIXEL_MASK 0xffff + +static uint32_t rgb_formats[] = { + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_RGBA4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_RGBA8888, +}; + +struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = { + .formats = rgb_formats, + .nformats = ARRAY_SIZE(rgb_formats), +}; + +static uint32_t rgb_and_yuv_formats[] = { + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_RGBA4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_RGBA8888, + DRM_FORMAT_AYUV, + DRM_FORMAT_YUYV, + DRM_FORMAT_UYVY, + DRM_FORMAT_YVYU, + DRM_FORMAT_VYUY, + DRM_FORMAT_NV21, + DRM_FORMAT_NV61, + DRM_FORMAT_YUV422, + DRM_FORMAT_YUV420, +}; + +struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = { + .formats = rgb_and_yuv_formats, + .nformats = ARRAY_SIZE(rgb_and_yuv_formats), +}; + +static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode) +{ + switch (format) { + case DRM_FORMAT_XRGB4444: + *mode = ATMEL_HLCDC_XRGB4444_MODE; + break; + case DRM_FORMAT_ARGB4444: + *mode = ATMEL_HLCDC_ARGB4444_MODE; + break; + case DRM_FORMAT_RGBA4444: + *mode = ATMEL_HLCDC_RGBA4444_MODE; + break; + case DRM_FORMAT_RGB565: + *mode = ATMEL_HLCDC_RGB565_MODE; + break; + case DRM_FORMAT_RGB888: + *mode = ATMEL_HLCDC_RGB888_MODE; + break; + case DRM_FORMAT_ARGB1555: + *mode = ATMEL_HLCDC_ARGB1555_MODE; + break; + case DRM_FORMAT_XRGB8888: + *mode = ATMEL_HLCDC_XRGB8888_MODE; + break; + case DRM_FORMAT_ARGB8888: + *mode = ATMEL_HLCDC_ARGB8888_MODE; + break; + case DRM_FORMAT_RGBA8888: + *mode = ATMEL_HLCDC_RGBA8888_MODE; + break; + case DRM_FORMAT_AYUV: + *mode = ATMEL_HLCDC_AYUV_MODE; + break; + case DRM_FORMAT_YUYV: + *mode = ATMEL_HLCDC_YUYV_MODE; + break; + case DRM_FORMAT_UYVY: + *mode = ATMEL_HLCDC_UYVY_MODE; + break; + case DRM_FORMAT_YVYU: + *mode = ATMEL_HLCDC_YVYU_MODE; + break; + case DRM_FORMAT_VYUY: + *mode = ATMEL_HLCDC_VYUY_MODE; + break; + case DRM_FORMAT_NV21: + *mode = ATMEL_HLCDC_NV21_MODE; + break; + case DRM_FORMAT_NV61: + *mode = ATMEL_HLCDC_NV61_MODE; + break; + case DRM_FORMAT_YUV420: + *mode = ATMEL_HLCDC_YUV420_MODE; + break; + case DRM_FORMAT_YUV422: + *mode = ATMEL_HLCDC_YUV422_MODE; + break; + default: + return -ENOTSUPP; + } + + return 0; +} + +static bool atmel_hlcdc_format_embedds_alpha(u32 format) +{ + int i; + + for (i = 0; i < sizeof(format); i++) { + char tmp = (format >> (8 * i)) & 0xff; + + if (tmp == 'A') + return true; + } + + return false; +} + +static u32 heo_downscaling_xcoef[] = { + 0x11343311, + 0x000000f7, + 0x1635300c, + 0x000000f9, + 0x1b362c08, + 0x000000fb, + 0x1f372804, + 0x000000fe, + 0x24382400, + 0x00000000, + 0x28371ffe, + 0x00000004, + 0x2c361bfb, + 0x00000008, + 0x303516f9, + 0x0000000c, +}; + +static u32 heo_downscaling_ycoef[] = { + 0x00123737, + 0x00173732, + 0x001b382d, + 0x001f3928, + 0x00243824, + 0x0028391f, + 0x002d381b, + 0x00323717, +}; + +static u32 heo_upscaling_xcoef[] = { + 0xf74949f7, + 0x00000000, + 0xf55f33fb, + 0x000000fe, + 0xf5701efe, + 0x000000ff, + 0xf87c0dff, + 0x00000000, + 0x00800000, + 0x00000000, + 0x0d7cf800, + 0x000000ff, + 0x1e70f5ff, + 0x000000fe, + 0x335ff5fe, + 0x000000fb, +}; + +static u32 heo_upscaling_ycoef[] = { + 0x00004040, + 0x00075920, + 0x00056f0c, + 0x00027b03, + 0x00008000, + 0x00037b02, + 0x000c6f05, + 0x00205907, +}; + +static void +atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane, + struct atmel_hlcdc_plane_update_req *req) +{ + const struct atmel_hlcdc_layer_cfg_layout *layout = + &plane->layer.desc->layout; + + if (layout->size) + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->size, + 0xffffffff, + (req->crtc_w - 1) | + ((req->crtc_h - 1) << 16)); + + if (layout->memsize) + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->memsize, + 0xffffffff, + (req->src_w - 1) | + ((req->src_h - 1) << 16)); + + if (layout->pos) + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->pos, + 0xffffffff, + req->crtc_x | + (req->crtc_y << 16)); + + /* TODO: rework the rescaling part */ + if (req->crtc_w != req->src_w || req->crtc_h != req->src_h) { + u32 factor_reg = 0; + + if (req->crtc_w != req->src_w) { + int i; + u32 factor; + u32 *coeff_tab = heo_upscaling_xcoef; + u32 max_memsize; + + if (req->crtc_w < req->src_w) + coeff_tab = heo_downscaling_xcoef; + for (i = 0; i < ARRAY_SIZE(heo_upscaling_xcoef); i++) + atmel_hlcdc_layer_update_cfg(&plane->layer, + 17 + i, + 0xffffffff, + coeff_tab[i]); + factor = ((8 * 256 * req->src_w) - (256 * 4)) / + req->crtc_w; + factor++; + max_memsize = ((factor * req->crtc_w) + (256 * 4)) / + 2048; + if (max_memsize > req->src_w) + factor--; + factor_reg |= factor | 0x80000000; + } + + if (req->crtc_h != req->src_h) { + int i; + u32 factor; + u32 *coeff_tab = heo_upscaling_ycoef; + u32 max_memsize; + + if (req->crtc_w < req->src_w) + coeff_tab = heo_downscaling_ycoef; + for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++) + atmel_hlcdc_layer_update_cfg(&plane->layer, + 33 + i, + 0xffffffff, + coeff_tab[i]); + factor = ((8 * 256 * req->src_w) - (256 * 4)) / + req->crtc_w; + factor++; + max_memsize = ((factor * req->crtc_w) + (256 * 4)) / + 2048; + if (max_memsize > req->src_w) + factor--; + factor_reg |= (factor << 16) | 0x80000000; + } + + atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, + factor_reg); + } +} + +static void +atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane, + struct atmel_hlcdc_plane_update_req *req) +{ + const struct atmel_hlcdc_layer_cfg_layout *layout = + &plane->layer.desc->layout; + unsigned int cfg = ATMEL_HLCDC_LAYER_DMA; + + if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) { + cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL | + ATMEL_HLCDC_LAYER_ITER; + + if (atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format)) + cfg |= ATMEL_HLCDC_LAYER_LAEN; + else + cfg |= ATMEL_HLCDC_LAYER_GAEN; + } + + atmel_hlcdc_layer_update_cfg(&plane->layer, + ATMEL_HLCDC_LAYER_DMA_CFG_ID, + ATMEL_HLCDC_LAYER_DMA_BLEN_MASK, + ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16); + + atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config, + ATMEL_HLCDC_LAYER_ITER2BL | + ATMEL_HLCDC_LAYER_ITER | + ATMEL_HLCDC_LAYER_GAEN | + ATMEL_HLCDC_LAYER_LAEN | + ATMEL_HLCDC_LAYER_OVR | + ATMEL_HLCDC_LAYER_DMA, cfg); +} + +static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane, + struct atmel_hlcdc_plane_update_req *req) +{ + u32 cfg; + int ret; + + ret = atmel_hlcdc_format_to_plane_mode(req->fb->pixel_format, &cfg); + if (ret) + return; + + if ((req->fb->pixel_format == DRM_FORMAT_YUV422 || + req->fb->pixel_format == DRM_FORMAT_NV61) && + (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270)))) + cfg |= ATMEL_HLCDC_YUV422ROT; + + atmel_hlcdc_layer_update_cfg(&plane->layer, + ATMEL_HLCDC_LAYER_FORMAT_CFG_ID, + 0xffffffff, + cfg); + + /* + * Rotation optimization is not working on RGB888 (rotation is still + * working but without any optimization). + */ + if (req->fb->pixel_format == DRM_FORMAT_RGB888) + cfg = ATMEL_HLCDC_LAYER_DMA_ROTDIS; + else + cfg = 0; + + atmel_hlcdc_layer_update_cfg(&plane->layer, + ATMEL_HLCDC_LAYER_DMA_CFG_ID, + ATMEL_HLCDC_LAYER_DMA_ROTDIS, cfg); +} + +static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane, + struct atmel_hlcdc_plane_update_req *req) +{ + struct atmel_hlcdc_layer *layer = &plane->layer; + const struct atmel_hlcdc_layer_cfg_layout *layout = + &layer->desc->layout; + int i; + + atmel_hlcdc_layer_update_set_fb(&plane->layer, req->fb, req->offsets); + + for (i = 0; i < req->nplanes; i++) { + if (layout->xstride[i]) { + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->xstride[i], + 0xffffffff, + req->xstride[i]); + } + + if (layout->pstride[i]) { + atmel_hlcdc_layer_update_cfg(&plane->layer, + layout->pstride[i], + 0xffffffff, + req->pstride[i]); + } + } +} + +static int atmel_hlcdc_plane_check_update_req(struct drm_plane *p, + struct atmel_hlcdc_plane_update_req *req, + const struct drm_display_mode *mode) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + const struct atmel_hlcdc_layer_cfg_layout *layout = + &plane->layer.desc->layout; + + if (!layout->size && + (mode->hdisplay != req->crtc_w || + mode->vdisplay != req->crtc_h)) + return -EINVAL; + + if (plane->layer.desc->max_height && + req->crtc_h > plane->layer.desc->max_height) + return -EINVAL; + + if (plane->layer.desc->max_width && + req->crtc_w > plane->layer.desc->max_width) + return -EINVAL; + + if ((req->crtc_h != req->src_h || req->crtc_w != req->src_w) && + (!layout->memsize || + atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format))) + return -EINVAL; + + if (req->crtc_x < 0 || req->crtc_y < 0) + return -EINVAL; + + if (req->crtc_w + req->crtc_x > mode->hdisplay || + req->crtc_h + req->crtc_y > mode->vdisplay) + return -EINVAL; + + return 0; +} + +int atmel_hlcdc_plane_prepare_update_req(struct drm_plane *p, + struct atmel_hlcdc_plane_update_req *req, + const struct drm_display_mode *mode) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + unsigned int patched_crtc_w; + unsigned int patched_crtc_h; + unsigned int patched_src_w; + unsigned int patched_src_h; + unsigned int tmp; + int x_offset = 0; + int y_offset = 0; + int hsub = 1; + int vsub = 1; + int i; + + if ((req->src_x | req->src_y | req->src_w | req->src_h) & + SUBPIXEL_MASK) + return -EINVAL; + + req->src_x >>= 16; + req->src_y >>= 16; + req->src_w >>= 16; + req->src_h >>= 16; + + req->nplanes = drm_format_num_planes(req->fb->pixel_format); + if (req->nplanes > ATMEL_HLCDC_MAX_PLANES) + return -EINVAL; + + /* + * Swap width and size in case of 90 or 270 degrees rotation + */ + if (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) { + tmp = req->crtc_w; + req->crtc_w = req->crtc_h; + req->crtc_h = tmp; + tmp = req->src_w; + req->src_w = req->src_h; + req->src_h = tmp; + } + + if (req->crtc_x + req->crtc_w > mode->hdisplay) + patched_crtc_w = mode->hdisplay - req->crtc_x; + else + patched_crtc_w = req->crtc_w; + + if (req->crtc_x < 0) { + patched_crtc_w += req->crtc_x; + x_offset = -req->crtc_x; + req->crtc_x = 0; + } + + if (req->crtc_y + req->crtc_h > mode->vdisplay) + patched_crtc_h = mode->vdisplay - req->crtc_y; + else + patched_crtc_h = req->crtc_h; + + if (req->crtc_y < 0) { + patched_crtc_h += req->crtc_y; + y_offset = -req->crtc_y; + req->crtc_y = 0; + } + + patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * req->src_w, + req->crtc_w); + patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * req->src_h, + req->crtc_h); + + hsub = drm_format_horz_chroma_subsampling(req->fb->pixel_format); + vsub = drm_format_vert_chroma_subsampling(req->fb->pixel_format); + + for (i = 0; i < req->nplanes; i++) { + unsigned int offset = 0; + int xdiv = i ? hsub : 1; + int ydiv = i ? vsub : 1; + + req->bpp[i] = drm_format_plane_cpp(req->fb->pixel_format, i); + if (!req->bpp[i]) + return -EINVAL; + + switch (plane->rotation & 0xf) { + case BIT(DRM_ROTATE_90): + offset = ((y_offset + req->src_y + patched_src_w - 1) / + ydiv) * req->fb->pitches[i]; + offset += ((x_offset + req->src_x) / xdiv) * + req->bpp[i]; + req->xstride[i] = ((patched_src_w - 1) / ydiv) * + req->fb->pitches[i]; + req->pstride[i] = -req->fb->pitches[i] - req->bpp[i]; + break; + case BIT(DRM_ROTATE_180): + offset = ((y_offset + req->src_y + patched_src_h - 1) / + ydiv) * req->fb->pitches[i]; + offset += ((x_offset + req->src_x + patched_src_w - 1) / + xdiv) * req->bpp[i]; + req->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) * + req->bpp[i]) - req->fb->pitches[i]; + req->pstride[i] = -2 * req->bpp[i]; + break; + case BIT(DRM_ROTATE_270): + offset = ((y_offset + req->src_y) / ydiv) * + req->fb->pitches[i]; + offset += ((x_offset + req->src_x + patched_src_h - 1) / + xdiv) * req->bpp[i]; + req->xstride[i] = -(((patched_src_w - 1) / ydiv) * + req->fb->pitches[i]) - + (2 * req->bpp[i]); + req->pstride[i] = req->fb->pitches[i] - req->bpp[i]; + break; + case BIT(DRM_ROTATE_0): + default: + offset = ((y_offset + req->src_y) / ydiv) * + req->fb->pitches[i]; + offset += ((x_offset + req->src_x) / xdiv) * + req->bpp[i]; + req->xstride[i] = req->fb->pitches[i] - + ((patched_src_w / xdiv) * + req->bpp[i]); + req->pstride[i] = 0; + break; + } + + req->offsets[i] = offset + req->fb->offsets[i]; + } + + req->src_w = patched_src_w; + req->src_h = patched_src_h; + req->crtc_w = patched_crtc_w; + req->crtc_h = patched_crtc_h; + + return atmel_hlcdc_plane_check_update_req(p, req, mode); +} + +int atmel_hlcdc_plane_apply_update_req(struct drm_plane *p, + struct atmel_hlcdc_plane_update_req *req) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + int ret; + + ret = atmel_hlcdc_layer_update_start(&plane->layer); + if (ret) + return ret; + + atmel_hlcdc_plane_update_pos_and_size(plane, req); + atmel_hlcdc_plane_update_general_settings(plane, req); + atmel_hlcdc_plane_update_format(plane, req); + atmel_hlcdc_plane_update_buffers(plane, req); + + atmel_hlcdc_layer_update_commit(&plane->layer); + + return 0; +} + +int atmel_hlcdc_plane_update_with_mode(struct drm_plane *p, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int crtc_x, int crtc_y, + unsigned int crtc_w, + unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h, + const struct drm_display_mode *mode) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_update_req req; + int ret = 0; + + memset(&req, 0, sizeof(req)); + req.crtc_x = crtc_x; + req.crtc_y = crtc_y; + req.crtc_w = crtc_w; + req.crtc_h = crtc_h; + req.src_x = src_x; + req.src_y = src_y; + req.src_w = src_w; + req.src_h = src_h; + req.fb = fb; + + ret = atmel_hlcdc_plane_prepare_update_req(&plane->base, &req, mode); + if (ret) + return ret; + + if (!req.crtc_h || !req.crtc_w) + return atmel_hlcdc_layer_disable(&plane->layer); + + return atmel_hlcdc_plane_apply_update_req(&plane->base, &req); +} + +static int atmel_hlcdc_plane_update(struct drm_plane *p, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h) +{ + return atmel_hlcdc_plane_update_with_mode(p, crtc, fb, crtc_x, crtc_y, + crtc_w, crtc_h, src_x, src_y, + src_w, src_h, &crtc->hwmode); +} + +static int atmel_hlcdc_plane_disable(struct drm_plane *p) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + + return atmel_hlcdc_layer_disable(&plane->layer); +} + +static void atmel_hlcdc_plane_destroy(struct drm_plane *p) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + + if (plane->base.fb) + drm_framebuffer_unreference(plane->base.fb); + + atmel_hlcdc_layer_cleanup(p->dev, &plane->layer); + + drm_plane_cleanup(p); + devm_kfree(p->dev->dev, plane); +} + +static int atmel_hlcdc_plane_set_alpha(struct atmel_hlcdc_plane *plane, + u8 alpha) +{ + atmel_hlcdc_layer_update_start(&plane->layer); + atmel_hlcdc_layer_update_cfg(&plane->layer, + plane->layer.desc->layout.general_config, + ATMEL_HLCDC_LAYER_GA_MASK, + alpha << ATMEL_HLCDC_LAYER_GA_SHIFT); + atmel_hlcdc_layer_update_commit(&plane->layer); + + return 0; +} + +static int atmel_hlcdc_plane_set_rotation(struct atmel_hlcdc_plane *plane, + unsigned int rotation) +{ + plane->rotation = rotation; + + return 0; +} + +static int atmel_hlcdc_plane_set_property(struct drm_plane *p, + struct drm_property *property, + uint64_t value) +{ + struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); + struct atmel_hlcdc_plane_properties *props = plane->properties; + + if (property == props->alpha) + atmel_hlcdc_plane_set_alpha(plane, value); + else if (property == props->rotation) + atmel_hlcdc_plane_set_rotation(plane, value); + else + return -EINVAL; + + return 0; +} + +static void atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane, + const struct atmel_hlcdc_layer_desc *desc, + struct atmel_hlcdc_plane_properties *props) +{ + struct regmap *regmap = plane->layer.hlcdc->regmap; + + if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER || + desc->type == ATMEL_HLCDC_CURSOR_LAYER) { + drm_object_attach_property(&plane->base.base, + props->alpha, 255); + + /* Set default alpha value */ + regmap_update_bits(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_GENERAL_CFG(&plane->layer), + ATMEL_HLCDC_LAYER_GA_MASK, + ATMEL_HLCDC_LAYER_GA_MASK); + } + + if (desc->layout.xstride && desc->layout.pstride) + drm_object_attach_property(&plane->base.base, + props->rotation, + BIT(DRM_ROTATE_0)); + + if (desc->layout.csc) { + /* + * TODO: decare a "yuv-to-rgb-conv-factors" property to let + * userspace modify these factors (using a BLOB property ?). + */ + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 0), + 0x4c900091); + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 1), + 0x7a5f5090); + regmap_write(regmap, + desc->regs_offset + + ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 2), + 0x40040890); + } +} + +static struct drm_plane_funcs layer_plane_funcs = { + .update_plane = atmel_hlcdc_plane_update, + .disable_plane = atmel_hlcdc_plane_disable, + .set_property = atmel_hlcdc_plane_set_property, + .destroy = atmel_hlcdc_plane_destroy, +}; + +static struct atmel_hlcdc_plane * +atmel_hlcdc_plane_create(struct drm_device *dev, + const struct atmel_hlcdc_layer_desc *desc, + struct atmel_hlcdc_plane_properties *props) +{ + struct atmel_hlcdc_plane *plane; + enum drm_plane_type type; + int ret; + + plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL); + if (!plane) + return ERR_PTR(-ENOMEM); + + ret = atmel_hlcdc_layer_init(dev, &plane->layer, desc); + if (ret) + return ERR_PTR(ret); + + if (desc->type == ATMEL_HLCDC_BASE_LAYER) + type = DRM_PLANE_TYPE_PRIMARY; + else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER) + type = DRM_PLANE_TYPE_CURSOR; + else + type = DRM_PLANE_TYPE_OVERLAY; + + ret = drm_universal_plane_init(dev, &plane->base, 0, + &layer_plane_funcs, + desc->formats->formats, + desc->formats->nformats, type); + if (ret) + return ERR_PTR(ret); + + /* Set default property values*/ + atmel_hlcdc_plane_init_properties(plane, desc, props); + + return plane; +} + +static struct atmel_hlcdc_plane_properties * +atmel_hlcdc_plane_create_properties(struct drm_device *dev) +{ + struct atmel_hlcdc_plane_properties *props; + + props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL); + if (!props) + return ERR_PTR(-ENOMEM); + + props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255); + if (!props->alpha) + return ERR_PTR(-ENOMEM); + + props->rotation = drm_mode_create_rotation_property(dev, + BIT(DRM_ROTATE_0) | + BIT(DRM_ROTATE_90) | + BIT(DRM_ROTATE_180) | + BIT(DRM_ROTATE_270)); + if (!props->rotation) + return ERR_PTR(-ENOMEM); + + return props; +} + +struct atmel_hlcdc_planes * +atmel_hlcdc_create_planes(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct atmel_hlcdc_plane_properties *props; + struct atmel_hlcdc_planes *planes; + const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers; + int nlayers = dc->desc->nlayers; + int i; + + planes = devm_kzalloc(dev->dev, sizeof(*planes), GFP_KERNEL); + if (!planes) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < nlayers; i++) { + if (descs[i].type == ATMEL_HLCDC_OVERLAY_LAYER) + planes->noverlays++; + } + + if (planes->noverlays) { + planes->overlays = devm_kzalloc(dev->dev, + planes->noverlays * + sizeof(*planes->overlays), + GFP_KERNEL); + if (!planes->overlays) + return ERR_PTR(-ENOMEM); + } + + props = atmel_hlcdc_plane_create_properties(dev); + if (IS_ERR(props)) + return ERR_CAST(props); + + planes->noverlays = 0; + for (i = 0; i < nlayers; i++) { + struct atmel_hlcdc_plane *plane; + + if (descs[i].type == ATMEL_HLCDC_PP_LAYER) + continue; + + plane = atmel_hlcdc_plane_create(dev, &descs[i], props); + if (IS_ERR(plane)) + return ERR_CAST(plane); + + plane->properties = props; + + switch (descs[i].type) { + case ATMEL_HLCDC_BASE_LAYER: + if (planes->primary) + return ERR_PTR(-EINVAL); + planes->primary = plane; + break; + + case ATMEL_HLCDC_OVERLAY_LAYER: + planes->overlays[planes->noverlays++] = plane; + break; + + case ATMEL_HLCDC_CURSOR_LAYER: + if (planes->cursor) + return ERR_PTR(-EINVAL); + planes->cursor = plane; + break; + + default: + break; + } + } + + return planes; +} |
