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-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/Kconfig11
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/Makefile7
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c367
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c617
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h165
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c666
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h399
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c308
-rw-r--r--kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c1048
9 files changed, 3588 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/atmel-hlcdc/Kconfig b/kernel/drivers/gpu/drm/atmel-hlcdc/Kconfig
new file mode 100644
index 000000000..99b4f0698
--- /dev/null
+++ b/kernel/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/kernel/drivers/gpu/drm/atmel-hlcdc/Makefile b/kernel/drivers/gpu/drm/atmel-hlcdc/Makefile
new file mode 100644
index 000000000..10ae426e6
--- /dev/null
+++ b/kernel/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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
new file mode 100644
index 000000000..f69b92535
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -0,0 +1,367 @@
+/*
+ * 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 <linux/pinctrl/consumer.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)
+ * @enabled: CRTC state
+ */
+struct atmel_hlcdc_crtc {
+ struct drm_crtc base;
+ struct atmel_hlcdc_dc *dc;
+ struct drm_pending_vblank_event *event;
+ int id;
+ bool enabled;
+};
+
+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_mode_set_nofb(struct drm_crtc *c)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+ struct regmap *regmap = crtc->dc->hlcdc->regmap;
+ struct drm_display_mode *adj = &c->state->adjusted_mode;
+ unsigned long mode_rate;
+ struct videomode vm;
+ unsigned long prate;
+ unsigned int cfg;
+ int div;
+
+ 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 = 0;
+
+ prate = clk_get_rate(crtc->dc->hlcdc->sys_clk);
+ mode_rate = adj->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 (adj->flags & DRM_MODE_FLAG_NVSYNC)
+ cfg |= ATMEL_HLCDC_VSPOL;
+
+ if (adj->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);
+}
+
+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 *c)
+{
+ 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 (!crtc->enabled)
+ return;
+
+ drm_crtc_vblank_off(c);
+
+ pm_runtime_get_sync(dev->dev);
+
+ 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);
+ pinctrl_pm_select_sleep_state(dev->dev);
+
+ pm_runtime_allow(dev->dev);
+
+ pm_runtime_put_sync(dev->dev);
+
+ crtc->enabled = false;
+}
+
+static void atmel_hlcdc_crtc_enable(struct drm_crtc *c)
+{
+ 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 (crtc->enabled)
+ return;
+
+ pm_runtime_get_sync(dev->dev);
+
+ pm_runtime_forbid(dev->dev);
+
+ pinctrl_pm_select_default_state(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);
+
+ drm_crtc_vblank_on(c);
+
+ crtc->enabled = true;
+}
+
+void atmel_hlcdc_crtc_suspend(struct drm_crtc *c)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (crtc->enabled) {
+ atmel_hlcdc_crtc_disable(c);
+ /* save enable state for resume */
+ crtc->enabled = true;
+ }
+}
+
+void atmel_hlcdc_crtc_resume(struct drm_crtc *c)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (crtc->enabled) {
+ crtc->enabled = false;
+ atmel_hlcdc_crtc_enable(c);
+ }
+}
+
+static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c,
+ struct drm_crtc_state *s)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (atmel_hlcdc_dc_mode_valid(crtc->dc, &s->adjusted_mode) != MODE_OK)
+ return -EINVAL;
+
+ return atmel_hlcdc_plane_prepare_disc_area(s);
+}
+
+static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (c->state->event) {
+ c->state->event->pipe = drm_crtc_index(c);
+
+ WARN_ON(drm_crtc_vblank_get(c) != 0);
+
+ crtc->event = c->state->event;
+ c->state->event = NULL;
+ }
+}
+
+static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc)
+{
+ /* TODO: write common plane control register if available */
+}
+
+static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = {
+ .mode_fixup = atmel_hlcdc_crtc_mode_fixup,
+ .mode_set = drm_helper_crtc_mode_set,
+ .mode_set_nofb = atmel_hlcdc_crtc_mode_set_nofb,
+ .mode_set_base = drm_helper_crtc_mode_set_base,
+ .disable = atmel_hlcdc_crtc_disable,
+ .enable = atmel_hlcdc_crtc_enable,
+ .atomic_check = atmel_hlcdc_crtc_atomic_check,
+ .atomic_begin = atmel_hlcdc_crtc_atomic_begin,
+ .atomic_flush = atmel_hlcdc_crtc_atomic_flush,
+};
+
+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 const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = {
+ .page_flip = drm_atomic_helper_page_flip,
+ .set_config = drm_atomic_helper_set_config,
+ .destroy = atmel_hlcdc_crtc_destroy,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+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->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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
new file mode 100644
index 000000000..60b0c13d7
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -0,0 +1,617 @@
+/*
+ * 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,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+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);
+
+ 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;
+ }
+
+ drm_mode_config_reset(dev);
+
+ 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;
+}
+
+#ifdef CONFIG_PM
+static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
+{
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+ struct drm_crtc *crtc;
+
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ drm_modeset_lock_all(drm_dev);
+ list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head)
+ atmel_hlcdc_crtc_suspend(crtc);
+ drm_modeset_unlock_all(drm_dev);
+ return 0;
+}
+
+static int atmel_hlcdc_dc_drm_resume(struct device *dev)
+{
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+ struct drm_crtc *crtc;
+
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ drm_modeset_lock_all(drm_dev);
+ list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head)
+ atmel_hlcdc_crtc_resume(crtc);
+ drm_modeset_unlock_all(drm_dev);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
+ atmel_hlcdc_dc_drm_suspend, atmel_hlcdc_dc_drm_resume);
+
+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",
+ .pm = &atmel_hlcdc_dc_drm_pm_ops,
+ .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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
new file mode 100644
index 000000000..cf6b375bc
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -0,0 +1,165 @@
+/*
+ * 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_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_plane_helper.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;
+};
+
+/**
+ * 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;
+};
+
+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 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_disc_area(struct drm_crtc_state *c_state);
+
+void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
+
+void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *crtc,
+ struct drm_file *file);
+
+void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc);
+void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc);
+
+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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
new file mode 100644
index 000000000..377e43cea
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
@@ -0,0 +1,666 @@
+/*
+ * 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);
+}
+
+void 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 | ATMEL_HLCDC_LAYER_A2Q |
+ ATMEL_HLCDC_LAYER_UPDATE);
+
+ /* 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);
+}
+
+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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
new file mode 100644
index 000000000..9beabc940
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
@@ -0,0 +1,399 @@
+/*
+ * 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_GA(x) ((x) << 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);
+
+void 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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
new file mode 100644
index 000000000..9c4513005
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
@@ -0,0 +1,308 @@
+/*
+ * 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_enable(struct drm_encoder *encoder)
+{
+ 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);
+
+ drm_panel_enable(panel->panel);
+}
+
+static void atmel_hlcdc_panel_encoder_disable(struct drm_encoder *encoder)
+{
+ 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);
+
+ drm_panel_disable(panel->panel);
+}
+
+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_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 = {
+ .mode_fixup = atmel_hlcdc_panel_encoder_mode_fixup,
+ .mode_set = atmel_hlcdc_rgb_encoder_mode_set,
+ .disable = atmel_hlcdc_panel_encoder_disable,
+ .enable = atmel_hlcdc_panel_encoder_enable,
+};
+
+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_atomic_helper_connector_dpms,
+ .detect = atmel_hlcdc_panel_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = atmel_hlcdc_panel_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+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/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
new file mode 100644
index 000000000..be9fa8220
--- /dev/null
+++ b/kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -0,0 +1,1048 @@
+/*
+ * 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"
+
+/**
+ * Atmel HLCDC Plane state structure.
+ *
+ * @base: DRM plane state
+ * @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
+ * @alpha: alpha blending of the plane
+ * @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_state {
+ struct drm_plane_state base;
+ 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;
+
+ u8 alpha;
+
+ bool disc_updated;
+
+ int disc_x;
+ int disc_y;
+ int disc_w;
+ int disc_h;
+
+ /* 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;
+};
+
+static inline struct atmel_hlcdc_plane_state *
+drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s)
+{
+ return container_of(s, struct atmel_hlcdc_plane_state, base);
+}
+
+#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_embeds_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_state *state)
+{
+ 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,
+ (state->crtc_w - 1) |
+ ((state->crtc_h - 1) << 16));
+
+ if (layout->memsize)
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->memsize,
+ 0xffffffff,
+ (state->src_w - 1) |
+ ((state->src_h - 1) << 16));
+
+ if (layout->pos)
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->pos,
+ 0xffffffff,
+ state->crtc_x |
+ (state->crtc_y << 16));
+
+ /* TODO: rework the rescaling part */
+ if (state->crtc_w != state->src_w || state->crtc_h != state->src_h) {
+ u32 factor_reg = 0;
+
+ if (state->crtc_w != state->src_w) {
+ int i;
+ u32 factor;
+ u32 *coeff_tab = heo_upscaling_xcoef;
+ u32 max_memsize;
+
+ if (state->crtc_w < state->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 * state->src_w) - (256 * 4)) /
+ state->crtc_w;
+ factor++;
+ max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
+ 2048;
+ if (max_memsize > state->src_w)
+ factor--;
+ factor_reg |= factor | 0x80000000;
+ }
+
+ if (state->crtc_h != state->src_h) {
+ int i;
+ u32 factor;
+ u32 *coeff_tab = heo_upscaling_ycoef;
+ u32 max_memsize;
+
+ if (state->crtc_w < state->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 * state->src_w) - (256 * 4)) /
+ state->crtc_w;
+ factor++;
+ max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
+ 2048;
+ if (max_memsize > state->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_state *state)
+{
+ 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_embeds_alpha(state->base.fb->pixel_format))
+ cfg |= ATMEL_HLCDC_LAYER_LAEN;
+ else
+ cfg |= ATMEL_HLCDC_LAYER_GAEN |
+ ATMEL_HLCDC_LAYER_GA(state->alpha);
+ }
+
+ 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_GA_MASK |
+ 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_state *state)
+{
+ u32 cfg;
+ int ret;
+
+ ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->pixel_format,
+ &cfg);
+ if (ret)
+ return;
+
+ if ((state->base.fb->pixel_format == DRM_FORMAT_YUV422 ||
+ state->base.fb->pixel_format == DRM_FORMAT_NV61) &&
+ (state->base.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 (state->base.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_state *state)
+{
+ 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, state->base.fb,
+ state->offsets);
+
+ for (i = 0; i < state->nplanes; i++) {
+ if (layout->xstride[i]) {
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->xstride[i],
+ 0xffffffff,
+ state->xstride[i]);
+ }
+
+ if (layout->pstride[i]) {
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->pstride[i],
+ 0xffffffff,
+ state->pstride[i]);
+ }
+ }
+}
+
+int
+atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
+{
+ int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0;
+ const struct atmel_hlcdc_layer_cfg_layout *layout;
+ struct atmel_hlcdc_plane_state *primary_state;
+ struct drm_plane_state *primary_s;
+ struct atmel_hlcdc_plane *primary;
+ struct drm_plane *ovl;
+
+ primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary);
+ layout = &primary->layer.desc->layout;
+ if (!layout->disc_pos || !layout->disc_size)
+ return 0;
+
+ primary_s = drm_atomic_get_plane_state(c_state->state,
+ &primary->base);
+ if (IS_ERR(primary_s))
+ return PTR_ERR(primary_s);
+
+ primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s);
+
+ drm_atomic_crtc_state_for_each_plane(ovl, c_state) {
+ struct atmel_hlcdc_plane_state *ovl_state;
+ struct drm_plane_state *ovl_s;
+
+ if (ovl == c_state->crtc->primary)
+ continue;
+
+ ovl_s = drm_atomic_get_plane_state(c_state->state, ovl);
+ if (IS_ERR(ovl_s))
+ return PTR_ERR(ovl_s);
+
+ ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
+
+ if (!ovl_s->fb ||
+ atmel_hlcdc_format_embeds_alpha(ovl_s->fb->pixel_format) ||
+ ovl_state->alpha != 255)
+ continue;
+
+ /* TODO: implement a smarter hidden area detection */
+ if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w)
+ continue;
+
+ disc_x = ovl_state->crtc_x;
+ disc_y = ovl_state->crtc_y;
+ disc_h = ovl_state->crtc_h;
+ disc_w = ovl_state->crtc_w;
+ }
+
+ if (disc_x == primary_state->disc_x &&
+ disc_y == primary_state->disc_y &&
+ disc_w == primary_state->disc_w &&
+ disc_h == primary_state->disc_h)
+ return 0;
+
+
+ primary_state->disc_x = disc_x;
+ primary_state->disc_y = disc_y;
+ primary_state->disc_w = disc_w;
+ primary_state->disc_h = disc_h;
+ primary_state->disc_updated = true;
+
+ return 0;
+}
+
+static void
+atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane,
+ struct atmel_hlcdc_plane_state *state)
+{
+ const struct atmel_hlcdc_layer_cfg_layout *layout =
+ &plane->layer.desc->layout;
+ int disc_surface = 0;
+
+ if (!state->disc_updated)
+ return;
+
+ disc_surface = state->disc_h * state->disc_w;
+
+ atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
+ ATMEL_HLCDC_LAYER_DISCEN,
+ disc_surface ? ATMEL_HLCDC_LAYER_DISCEN : 0);
+
+ if (!disc_surface)
+ return;
+
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->disc_pos,
+ 0xffffffff,
+ state->disc_x | (state->disc_y << 16));
+
+ atmel_hlcdc_layer_update_cfg(&plane->layer,
+ layout->disc_size,
+ 0xffffffff,
+ (state->disc_w - 1) |
+ ((state->disc_h - 1) << 16));
+}
+
+static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
+ struct drm_plane_state *s)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(s);
+ const struct atmel_hlcdc_layer_cfg_layout *layout =
+ &plane->layer.desc->layout;
+ struct drm_framebuffer *fb = state->base.fb;
+ const struct drm_display_mode *mode;
+ struct drm_crtc_state *crtc_state;
+ 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 (!state->base.crtc || !fb)
+ return 0;
+
+ crtc_state = s->state->crtc_states[drm_crtc_index(s->crtc)];
+ mode = &crtc_state->adjusted_mode;
+
+ state->src_x = s->src_x;
+ state->src_y = s->src_y;
+ state->src_h = s->src_h;
+ state->src_w = s->src_w;
+ state->crtc_x = s->crtc_x;
+ state->crtc_y = s->crtc_y;
+ state->crtc_h = s->crtc_h;
+ state->crtc_w = s->crtc_w;
+ if ((state->src_x | state->src_y | state->src_w | state->src_h) &
+ SUBPIXEL_MASK)
+ return -EINVAL;
+
+ state->src_x >>= 16;
+ state->src_y >>= 16;
+ state->src_w >>= 16;
+ state->src_h >>= 16;
+
+ state->nplanes = drm_format_num_planes(fb->pixel_format);
+ if (state->nplanes > ATMEL_HLCDC_MAX_PLANES)
+ return -EINVAL;
+
+ /*
+ * Swap width and size in case of 90 or 270 degrees rotation
+ */
+ if (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
+ tmp = state->crtc_w;
+ state->crtc_w = state->crtc_h;
+ state->crtc_h = tmp;
+ tmp = state->src_w;
+ state->src_w = state->src_h;
+ state->src_h = tmp;
+ }
+
+ if (state->crtc_x + state->crtc_w > mode->hdisplay)
+ patched_crtc_w = mode->hdisplay - state->crtc_x;
+ else
+ patched_crtc_w = state->crtc_w;
+
+ if (state->crtc_x < 0) {
+ patched_crtc_w += state->crtc_x;
+ x_offset = -state->crtc_x;
+ state->crtc_x = 0;
+ }
+
+ if (state->crtc_y + state->crtc_h > mode->vdisplay)
+ patched_crtc_h = mode->vdisplay - state->crtc_y;
+ else
+ patched_crtc_h = state->crtc_h;
+
+ if (state->crtc_y < 0) {
+ patched_crtc_h += state->crtc_y;
+ y_offset = -state->crtc_y;
+ state->crtc_y = 0;
+ }
+
+ patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w,
+ state->crtc_w);
+ patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h,
+ state->crtc_h);
+
+ hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
+ vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
+
+ for (i = 0; i < state->nplanes; i++) {
+ unsigned int offset = 0;
+ int xdiv = i ? hsub : 1;
+ int ydiv = i ? vsub : 1;
+
+ state->bpp[i] = drm_format_plane_cpp(fb->pixel_format, i);
+ if (!state->bpp[i])
+ return -EINVAL;
+
+ switch (state->base.rotation & 0xf) {
+ case BIT(DRM_ROTATE_90):
+ offset = ((y_offset + state->src_y + patched_src_w - 1) /
+ ydiv) * fb->pitches[i];
+ offset += ((x_offset + state->src_x) / xdiv) *
+ state->bpp[i];
+ state->xstride[i] = ((patched_src_w - 1) / ydiv) *
+ fb->pitches[i];
+ state->pstride[i] = -fb->pitches[i] - state->bpp[i];
+ break;
+ case BIT(DRM_ROTATE_180):
+ offset = ((y_offset + state->src_y + patched_src_h - 1) /
+ ydiv) * fb->pitches[i];
+ offset += ((x_offset + state->src_x + patched_src_w - 1) /
+ xdiv) * state->bpp[i];
+ state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) *
+ state->bpp[i]) - fb->pitches[i];
+ state->pstride[i] = -2 * state->bpp[i];
+ break;
+ case BIT(DRM_ROTATE_270):
+ offset = ((y_offset + state->src_y) / ydiv) *
+ fb->pitches[i];
+ offset += ((x_offset + state->src_x + patched_src_h - 1) /
+ xdiv) * state->bpp[i];
+ state->xstride[i] = -(((patched_src_w - 1) / ydiv) *
+ fb->pitches[i]) -
+ (2 * state->bpp[i]);
+ state->pstride[i] = fb->pitches[i] - state->bpp[i];
+ break;
+ case BIT(DRM_ROTATE_0):
+ default:
+ offset = ((y_offset + state->src_y) / ydiv) *
+ fb->pitches[i];
+ offset += ((x_offset + state->src_x) / xdiv) *
+ state->bpp[i];
+ state->xstride[i] = fb->pitches[i] -
+ ((patched_src_w / xdiv) *
+ state->bpp[i]);
+ state->pstride[i] = 0;
+ break;
+ }
+
+ state->offsets[i] = offset + fb->offsets[i];
+ }
+
+ state->src_w = patched_src_w;
+ state->src_h = patched_src_h;
+ state->crtc_w = patched_crtc_w;
+ state->crtc_h = patched_crtc_h;
+
+ if (!layout->size &&
+ (mode->hdisplay != state->crtc_w ||
+ mode->vdisplay != state->crtc_h))
+ return -EINVAL;
+
+ if (plane->layer.desc->max_height &&
+ state->crtc_h > plane->layer.desc->max_height)
+ return -EINVAL;
+
+ if (plane->layer.desc->max_width &&
+ state->crtc_w > plane->layer.desc->max_width)
+ return -EINVAL;
+
+ if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
+ (!layout->memsize ||
+ atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format)))
+ return -EINVAL;
+
+ if (state->crtc_x < 0 || state->crtc_y < 0)
+ return -EINVAL;
+
+ if (state->crtc_w + state->crtc_x > mode->hdisplay ||
+ state->crtc_h + state->crtc_y > mode->vdisplay)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *new_state)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+
+ return atmel_hlcdc_layer_update_start(&plane->layer);
+}
+
+static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
+ struct drm_plane_state *old_s)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
+
+ if (!p->state->crtc || !p->state->fb)
+ return;
+
+ atmel_hlcdc_plane_update_pos_and_size(plane, state);
+ atmel_hlcdc_plane_update_general_settings(plane, state);
+ atmel_hlcdc_plane_update_format(plane, state);
+ atmel_hlcdc_plane_update_buffers(plane, state);
+ atmel_hlcdc_plane_update_disc_area(plane, state);
+
+ atmel_hlcdc_layer_update_commit(&plane->layer);
+}
+
+static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
+ struct drm_plane_state *old_state)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+
+ 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_atomic_set_property(struct drm_plane *p,
+ struct drm_plane_state *s,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_properties *props = plane->properties;
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(s);
+
+ if (property == props->alpha)
+ state->alpha = val;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p,
+ const struct drm_plane_state *s,
+ struct drm_property *property,
+ uint64_t *val)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_properties *props = plane->properties;
+ const struct atmel_hlcdc_plane_state *state =
+ container_of(s, const struct atmel_hlcdc_plane_state, base);
+
+ if (property == props->alpha)
+ *val = state->alpha;
+ 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,
+ plane->base.dev->mode_config.rotation_property,
+ 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_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
+ .prepare_fb = atmel_hlcdc_plane_prepare_fb,
+ .atomic_check = atmel_hlcdc_plane_atomic_check,
+ .atomic_update = atmel_hlcdc_plane_atomic_update,
+ .atomic_disable = atmel_hlcdc_plane_atomic_disable,
+};
+
+static void atmel_hlcdc_plane_reset(struct drm_plane *p)
+{
+ struct atmel_hlcdc_plane_state *state;
+
+ if (p->state) {
+ state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
+
+ if (state->base.fb)
+ drm_framebuffer_unreference(state->base.fb);
+
+ kfree(state);
+ p->state = NULL;
+ }
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (state) {
+ state->alpha = 255;
+ p->state = &state->base;
+ p->state->plane = p;
+ }
+}
+
+static struct drm_plane_state *
+atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p)
+{
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
+ struct atmel_hlcdc_plane_state *copy;
+
+ copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
+ if (!copy)
+ return NULL;
+
+ copy->disc_updated = false;
+
+ if (copy->base.fb)
+ drm_framebuffer_reference(copy->base.fb);
+
+ return &copy->base;
+}
+
+static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *s)
+{
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(s);
+
+ if (s->fb)
+ drm_framebuffer_unreference(s->fb);
+
+ kfree(state);
+}
+
+static struct drm_plane_funcs layer_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .destroy = atmel_hlcdc_plane_destroy,
+ .reset = atmel_hlcdc_plane_reset,
+ .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
+ .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
+ .atomic_set_property = atmel_hlcdc_plane_atomic_set_property,
+ .atomic_get_property = atmel_hlcdc_plane_atomic_get_property,
+};
+
+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);
+
+ drm_plane_helper_add(&plane->base,
+ &atmel_hlcdc_layer_plane_helper_funcs);
+
+ /* 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);
+
+ dev->mode_config.rotation_property =
+ drm_mode_create_rotation_property(dev,
+ BIT(DRM_ROTATE_0) |
+ BIT(DRM_ROTATE_90) |
+ BIT(DRM_ROTATE_180) |
+ BIT(DRM_ROTATE_270));
+ if (!dev->mode_config.rotation_property)
+ 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;
+}