diff options
author | Dave Airlie <airlied@redhat.com> | 2015-01-22 09:48:02 +1000 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2015-01-22 09:48:02 +1000 |
commit | c0d2792b2ad713d6a857efabc12b7dc4207a5d08 (patch) | |
tree | e68fd2a38ade3025bca4b6161a6f3a2dab07deed /drivers | |
parent | ca1130de2a5874c94ab73fc93f518dd9bc6c1886 (diff) | |
parent | 5b7e944ec87da878ef828d06094720be8884d33a (diff) |
Merge tag 'atmel-hlcdc-drm-3.20' of https://github.com/bbrezillon/linux-at91 into drm-next
Add atmel HLCDC driver.
* tag 'atmel-hlcdc-drm-3.20' of https://github.com/bbrezillon/linux-at91:
drm: add DT bindings documentation for atmel-hlcdc-dc driver
drm: add Atmel HLCDC Display Controller support
drm: panel: simple-panel: add bus format information for foxlink panel
drm: panel: simple-panel: add support for bus_format retrieval
drm: add bus_formats and num_bus_formats fields to drm_display_info
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/Kconfig | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/Kconfig | 11 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/Makefile | 7 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 406 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 579 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 213 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c | 667 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h | 398 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 319 | ||||
-rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 856 | ||||
-rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 35 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/panel-simple.c | 6 |
13 files changed, 3500 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index c3413b6adb17..ea283894a12a 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -183,6 +183,8 @@ source "drivers/gpu/drm/cirrus/Kconfig" source "drivers/gpu/drm/armada/Kconfig" +source "drivers/gpu/drm/atmel-hlcdc/Kconfig" + source "drivers/gpu/drm/rcar-du/Kconfig" source "drivers/gpu/drm/shmobile/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 66e40398b3d3..9d92ba3ff10c 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_DRM_GMA500) += gma500/ obj-$(CONFIG_DRM_UDL) += udl/ obj-$(CONFIG_DRM_AST) += ast/ obj-$(CONFIG_DRM_ARMADA) += armada/ +obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc/ obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/ obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/ obj-$(CONFIG_DRM_OMAP) += omapdrm/ diff --git a/drivers/gpu/drm/atmel-hlcdc/Kconfig b/drivers/gpu/drm/atmel-hlcdc/Kconfig new file mode 100644 index 000000000000..1a085625538a --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/Kconfig @@ -0,0 +1,11 @@ +config DRM_ATMEL_HLCDC + tristate "DRM Support for ATMEL HLCDC Display Controller" + depends on DRM && OF && COMMON_CLK && MFD_ATMEL_HLCDC + select DRM_GEM_CMA_HELPER + select DRM_KMS_HELPER + select DRM_KMS_FB_HELPER + select DRM_KMS_CMA_HELPER + select DRM_PANEL + help + Choose this option if you have an ATMEL SoC with an HLCDC display + controller (i.e. at91sam9n12, at91sam9x5 family or sama5d3 family). diff --git a/drivers/gpu/drm/atmel-hlcdc/Makefile b/drivers/gpu/drm/atmel-hlcdc/Makefile new file mode 100644 index 000000000000..10ae426e60bd --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/Makefile @@ -0,0 +1,7 @@ +atmel-hlcdc-dc-y := atmel_hlcdc_crtc.o \ + atmel_hlcdc_dc.o \ + atmel_hlcdc_layer.o \ + atmel_hlcdc_output.o \ + atmel_hlcdc_plane.o + +obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc-dc.o diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c new file mode 100644 index 000000000000..0409b907de5d --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -0,0 +1,406 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/clk.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drmP.h> + +#include <video/videomode.h> + +#include "atmel_hlcdc_dc.h" + +/** + * Atmel HLCDC CRTC structure + * + * @base: base DRM CRTC structure + * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device + * @event: pointer to the current page flip event + * @id: CRTC id (returned by drm_crtc_index) + * @dpms: DPMS mode + */ +struct atmel_hlcdc_crtc { + struct drm_crtc base; + struct atmel_hlcdc_dc *dc; + struct drm_pending_vblank_event *event; + int id; + int dpms; +}; + +static inline struct atmel_hlcdc_crtc * +drm_crtc_to_atmel_hlcdc_crtc(struct drm_crtc *crtc) +{ + return container_of(crtc, struct atmel_hlcdc_crtc, base); +} + +static void atmel_hlcdc_crtc_dpms(struct drm_crtc *c, int mode) +{ + struct drm_device *dev = c->dev; + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct regmap *regmap = crtc->dc->hlcdc->regmap; + unsigned int status; + + if (mode != DRM_MODE_DPMS_ON) + mode = DRM_MODE_DPMS_OFF; + + if (crtc->dpms == mode) + return; + + pm_runtime_get_sync(dev->dev); + + if (mode != DRM_MODE_DPMS_ON) { + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_DISP); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_DISP)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_SYNC); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_SYNC)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_PIXEL_CLK); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + (status & ATMEL_HLCDC_PIXEL_CLK)) + cpu_relax(); + + clk_disable_unprepare(crtc->dc->hlcdc->sys_clk); + + pm_runtime_allow(dev->dev); + } else { + pm_runtime_forbid(dev->dev); + + clk_prepare_enable(crtc->dc->hlcdc->sys_clk); + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_PIXEL_CLK); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_PIXEL_CLK)) + cpu_relax(); + + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_SYNC); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_SYNC)) + cpu_relax(); + + regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_DISP); + while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) && + !(status & ATMEL_HLCDC_DISP)) + cpu_relax(); + } + + pm_runtime_put_sync(dev->dev); + + crtc->dpms = mode; +} + +static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c, + struct drm_display_mode *mode, + struct drm_display_mode *adj, + int x, int y, + struct drm_framebuffer *old_fb) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct regmap *regmap = crtc->dc->hlcdc->regmap; + struct drm_plane *plane = c->primary; + struct drm_framebuffer *fb; + unsigned long mode_rate; + struct videomode vm; + unsigned long prate; + unsigned int cfg; + int div; + + if (atmel_hlcdc_dc_mode_valid(crtc->dc, adj) != MODE_OK) + return -EINVAL; + + vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay; + vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end; + vm.vsync_len = adj->crtc_vsync_end - adj->crtc_vsync_start; + vm.hfront_porch = adj->crtc_hsync_start - adj->crtc_hdisplay; + vm.hback_porch = adj->crtc_htotal - adj->crtc_hsync_end; + vm.hsync_len = adj->crtc_hsync_end - adj->crtc_hsync_start; + + regmap_write(regmap, ATMEL_HLCDC_CFG(1), + (vm.hsync_len - 1) | ((vm.vsync_len - 1) << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(2), + (vm.vfront_porch - 1) | (vm.vback_porch << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(3), + (vm.hfront_porch - 1) | ((vm.hback_porch - 1) << 16)); + + regmap_write(regmap, ATMEL_HLCDC_CFG(4), + (adj->crtc_hdisplay - 1) | + ((adj->crtc_vdisplay - 1) << 16)); + + cfg = ATMEL_HLCDC_CLKPOL; + + prate = clk_get_rate(crtc->dc->hlcdc->sys_clk); + mode_rate = mode->crtc_clock * 1000; + if ((prate / 2) < mode_rate) { + prate *= 2; + cfg |= ATMEL_HLCDC_CLKSEL; + } + + div = DIV_ROUND_UP(prate, mode_rate); + if (div < 2) + div = 2; + + cfg |= ATMEL_HLCDC_CLKDIV(div); + + regmap_update_bits(regmap, ATMEL_HLCDC_CFG(0), + ATMEL_HLCDC_CLKSEL | ATMEL_HLCDC_CLKDIV_MASK | + ATMEL_HLCDC_CLKPOL, cfg); + + cfg = 0; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + cfg |= ATMEL_HLCDC_VSPOL; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + cfg |= ATMEL_HLCDC_HSPOL; + + regmap_update_bits(regmap, ATMEL_HLCDC_CFG(5), + ATMEL_HLCDC_HSPOL | ATMEL_HLCDC_VSPOL | + ATMEL_HLCDC_VSPDLYS | ATMEL_HLCDC_VSPDLYE | + ATMEL_HLCDC_DISPPOL | ATMEL_HLCDC_DISPDLY | + ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO | + ATMEL_HLCDC_GUARDTIME_MASK, + cfg); + + fb = plane->fb; + plane->fb = old_fb; + + return atmel_hlcdc_plane_update_with_mode(plane, c, fb, 0, 0, + adj->hdisplay, adj->vdisplay, + x << 16, y << 16, + adj->hdisplay << 16, + adj->vdisplay << 16, + adj); +} + +int atmel_hlcdc_crtc_mode_set_base(struct drm_crtc *c, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_plane *plane = c->primary; + struct drm_framebuffer *fb = plane->fb; + struct drm_display_mode *mode = &c->hwmode; + + plane->fb = old_fb; + + return plane->funcs->update_plane(plane, c, fb, + 0, 0, + mode->hdisplay, + mode->vdisplay, + x << 16, y << 16, + mode->hdisplay << 16, + mode->vdisplay << 16); +} + +static void atmel_hlcdc_crtc_prepare(struct drm_crtc *crtc) +{ + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); +} + +static void atmel_hlcdc_crtc_commit(struct drm_crtc *crtc) +{ + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON); +} + +static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void atmel_hlcdc_crtc_disable(struct drm_crtc *crtc) +{ + struct drm_plane *plane; + + atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + crtc->primary->funcs->disable_plane(crtc->primary); + + drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) { + if (plane->crtc != crtc) + continue; + + plane->funcs->disable_plane(crtc->primary); + plane->crtc = NULL; + } +} + +static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = { + .mode_fixup = atmel_hlcdc_crtc_mode_fixup, + .dpms = atmel_hlcdc_crtc_dpms, + .mode_set = atmel_hlcdc_crtc_mode_set, + .mode_set_base = atmel_hlcdc_crtc_mode_set_base, + .prepare = atmel_hlcdc_crtc_prepare, + .commit = atmel_hlcdc_crtc_commit, + .disable = atmel_hlcdc_crtc_disable, +}; + +static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + + drm_crtc_cleanup(c); + kfree(crtc); +} + +void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *c, + struct drm_file *file) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct drm_pending_vblank_event *event; + struct drm_device *dev = c->dev; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + event = crtc->event; + if (event && event->base.file_priv == file) { + event->base.destroy(&event->base); + drm_vblank_put(dev, crtc->id); + crtc->event = NULL; + } + spin_unlock_irqrestore(&dev->event_lock, flags); +} + +static void atmel_hlcdc_crtc_finish_page_flip(struct atmel_hlcdc_crtc *crtc) +{ + struct drm_device *dev = crtc->base.dev; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + if (crtc->event) { + drm_send_vblank_event(dev, crtc->id, crtc->event); + drm_vblank_put(dev, crtc->id); + crtc->event = NULL; + } + spin_unlock_irqrestore(&dev->event_lock, flags); +} + +void atmel_hlcdc_crtc_irq(struct drm_crtc *c) +{ + drm_handle_vblank(c->dev, 0); + atmel_hlcdc_crtc_finish_page_flip(drm_crtc_to_atmel_hlcdc_crtc(c)); +} + +static int atmel_hlcdc_crtc_page_flip(struct drm_crtc *c, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t page_flip_flags) +{ + struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c); + struct atmel_hlcdc_plane_update_req req; + struct drm_plane *plane = c->primary; + struct drm_device *dev = c->dev; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&dev->event_lock, flags); + if (crtc->event) + ret = -EBUSY; + spin_unlock_irqrestore(&dev->event_lock, flags); + + if (ret) + return ret; + + memset(&req, 0, sizeof(req)); + req.crtc_x = 0; + req.crtc_y = 0; + req.crtc_h = c->mode.crtc_vdisplay; + req.crtc_w = c->mode.crtc_hdisplay; + req.src_x = c->x << 16; + req.src_y = c->y << 16; + req.src_w = req.crtc_w << 16; + req.src_h = req.crtc_h << 16; + req.fb = fb; + + ret = atmel_hlcdc_plane_prepare_update_req(plane, &req, &c->hwmode); + if (ret) + return ret; + + if (event) { + drm_vblank_get(c->dev, crtc->id); + spin_lock_irqsave(&dev->event_lock, flags); + crtc->event = event; + spin_unlock_irqrestore(&dev->event_lock, flags); + } + + ret = atmel_hlcdc_plane_apply_update_req(plane, &req); + if (ret) + crtc->event = NULL; + else + plane->fb = fb; + + return ret; +} + +static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = { + .page_flip = atmel_hlcdc_crtc_page_flip, + .set_config = drm_crtc_helper_set_config, + .destroy = atmel_hlcdc_crtc_destroy, +}; + +int atmel_hlcdc_crtc_create(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct atmel_hlcdc_planes *planes = dc->planes; + struct atmel_hlcdc_crtc *crtc; + int ret; + int i; + + crtc = kzalloc(sizeof(*crtc), GFP_KERNEL); + if (!crtc) + return -ENOMEM; + + crtc->dpms = DRM_MODE_DPMS_OFF; + crtc->dc = dc; + + ret = drm_crtc_init_with_planes(dev, &crtc->base, + &planes->primary->base, + planes->cursor ? &planes->cursor->base : NULL, + &atmel_hlcdc_crtc_funcs); + if (ret < 0) + goto fail; + + crtc->id = drm_crtc_index(&crtc->base); + + if (planes->cursor) + planes->cursor->base.possible_crtcs = 1 << crtc->id; + + for (i = 0; i < planes->noverlays; i++) + planes->overlays[i]->base.possible_crtcs = 1 << crtc->id; + + drm_crtc_helper_add(&crtc->base, &lcdc_crtc_helper_funcs); + + dc->crtc = &crtc->base; + + return 0; + +fail: + atmel_hlcdc_crtc_destroy(&crtc->base); + return ret; +} + diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c new file mode 100644 index 000000000000..7320a6c6613f --- /dev/null +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c @@ -0,0 +1,579 @@ +/* + * Copyright (C) 2014 Traphandler + * Copyright (C) 2014 Free Electrons + * Copyright (C) 2014 Atmel + * + * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com> + * Author: Boris BREZILLON <boris.brezillon@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/clk.h> +#include <linux/irq.h> +#include <linux/irqchip.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> + +#include "atmel_hlcdc_dc.h" + +#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8 + +static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = { + { + .name = "base", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x40, + .id = 0, + .type = ATMEL_HLCDC_BASE_LAYER, + .nconfigs = 7, + .layout = { + .xstride = { 2 }, + .default_color = 3, + .general_config = 4, + .disc_pos = 5, + .disc_size = 6, + }, + }, + { + .name = "overlay1", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x140, + .id = 1, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 10, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, + { + .name = "overlay2", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x240, + .id = 2, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 10, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, + { + .name = "high-end-overlay", + .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats, + .regs_offset = 0x340, + .id = 3, + .type = ATMEL_HLCDC_OVERLAY_LAYER, + .nconfigs = 42, + .layout = { + .pos = 2, + .size = 3, + .memsize = 4, + .xstride = { 5, 7 }, + .pstride = { 6, 8 }, + .default_color = 9, + .chroma_key = 10, + .chroma_key_mask = 11, + .general_config = 12, + .csc = 14, + }, + }, + { + .name = "cursor", + .formats = &atmel_hlcdc_plane_rgb_formats, + .regs_offset = 0x440, + .id = 4, + .type = ATMEL_HLCDC_CURSOR_LAYER, + .nconfigs = 10, + .max_width = 128, + .max_height = 128, + .layout = { + .pos = 2, + .size = 3, + .xstride = { 4 }, + .pstride = { 5 }, + .default_color = 6, + .chroma_key = 7, + .chroma_key_mask = 8, + .general_config = 9, + }, + }, +}; + +static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = { + .min_width = 0, + .min_height = 0, + .max_width = 2048, + .max_height = 2048, + .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers), + .layers = atmel_hlcdc_sama5d3_layers, +}; + +static const struct of_device_id atmel_hlcdc_of_match[] = { + { + .compatible = "atmel,sama5d3-hlcdc", + .data = &atmel_hlcdc_dc_sama5d3, + }, + { /* sentinel */ }, +}; + +int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc, + struct drm_display_mode *mode) +{ + int vfront_porch = mode->vsync_start - mode->vdisplay; + int vback_porch = mode->vtotal - mode->vsync_end; + int vsync_len = mode->vsync_end - mode->vsync_start; + int hfront_porch = mode->hsync_start - mode->hdisplay; + int hback_porch = mode->htotal - mode->hsync_end; + int hsync_len = mode->hsync_end - mode->hsync_start; + + if (hsync_len > 0x40 || hsync_len < 1) + return MODE_HSYNC; + + if (vsync_len > 0x40 || vsync_len < 1) + return MODE_VSYNC; + + if (hfront_porch > 0x200 || hfront_porch < 1 || + hback_porch > 0x200 || hback_porch < 1 || + mode->hdisplay < 1) + return MODE_H_ILLEGAL; + + if (vfront_porch > 0x40 || vfront_porch < 1 || + vback_porch > 0x40 || vback_porch < 0 || + mode->vdisplay < 1) + return MODE_V_ILLEGAL; + + return MODE_OK; +} + +static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data) +{ + struct drm_device *dev = data; + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned long status; + unsigned int imr, isr; + int i; + + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr); + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr); + status = imr & isr; + if (!status) + return IRQ_NONE; + + if (status & ATMEL_HLCDC_SOF) + atmel_hlcdc_crtc_irq(dc->crtc); + + for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) { + struct atmel_hlcdc_layer *layer = dc->layers[i]; + + if (!(ATMEL_HLCDC_LAYER_STATUS(i) & status) || !layer) + continue; + + atmel_hlcdc_layer_irq(layer); + } + + return IRQ_HANDLED; +} + +static struct drm_framebuffer *atmel_hlcdc_fb_create(struct drm_device *dev, + struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) +{ + return drm_fb_cma_create(dev, file_priv, mode_cmd); +} + +static void atmel_hlcdc_fb_output_poll_changed(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + if (dc->fbdev) { + drm_fbdev_cma_hotplug_event(dc->fbdev); + } else { + dc->fbdev = drm_fbdev_cma_init(dev, 24, + dev->mode_config.num_crtc, + dev->mode_config.num_connector); + if (IS_ERR(dc->fbdev)) + dc->fbdev = NULL; + } +} + +static const struct drm_mode_config_funcs mode_config_funcs = { + .fb_create = atmel_hlcdc_fb_create, + .output_poll_changed = atmel_hlcdc_fb_output_poll_changed, +}; + +static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + struct atmel_hlcdc_planes *planes; + int ret; + int i; + + drm_mode_config_init(dev); + + ret = atmel_hlcdc_create_outputs(dev); + if (ret) { + dev_err(dev->dev, "failed to create panel: %d\n", ret); + return ret; + } + + planes = atmel_hlcdc_create_planes(dev); + if (IS_ERR(planes)) { + dev_err(dev->dev, "failed to create planes\n"); + return PTR_ERR(planes); + } + + dc->planes = planes; + + dc->layers[planes->primary->layer.desc->id] = + &planes->primary->layer; + + if (planes->cursor) + dc->layers[planes->cursor->layer.desc->id] = + &planes->cursor->layer; + + for (i = 0; i < planes->noverlays; i++) + dc->layers[planes->overlays[i]->layer.desc->id] = + &planes->overlays[i]->layer; + + ret = atmel_hlcdc_crtc_create(dev); + if (ret) { + dev_err(dev->dev, "failed to create crtc\n"); + return ret; + } + + dev->mode_config.min_width = dc->desc->min_width; + dev->mode_config.min_height = dc->desc->min_height; + dev->mode_config.max_width = dc->desc->max_width; + dev->mode_config.max_height = dc->desc->max_height; + dev->mode_config.funcs = &mode_config_funcs; + + return 0; +} + +static int atmel_hlcdc_dc_load(struct drm_device *dev) +{ + struct platform_device *pdev = to_platform_device(dev->dev); + const struct of_device_id *match; + struct atmel_hlcdc_dc *dc; + int ret; + + match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node); + if (!match) { + dev_err(&pdev->dev, "invalid compatible string\n"); + return -ENODEV; + } + + if (!match->data) { + dev_err(&pdev->dev, "invalid hlcdc description\n"); + return -EINVAL; + } + + dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL); + if (!dc) + return -ENOMEM; + + dc->wq = alloc_ordered_workqueue("atmel-hlcdc-dc", 0); + if (!dc->wq) + return -ENOMEM; + + dc->desc = match->data; + dc->hlcdc = dev_get_drvdata(dev->dev->parent); + dev->dev_private = dc; + + ret = clk_prepare_enable(dc->hlcdc->periph_clk); + if (ret) { + dev_err(dev->dev, "failed to enable periph_clk\n"); + goto err_destroy_wq; + } + + pm_runtime_enable(dev->dev); + + pm_runtime_put_sync(dev->dev); + + ret = atmel_hlcdc_dc_modeset_init(dev); + if (ret < 0) { + dev_err(dev->dev, "failed to initialize mode setting\n"); + goto err_periph_clk_disable; + } + + ret = drm_vblank_init(dev, 1); + if (ret < 0) { + dev_err(dev->dev, "failed to initialize vblank\n"); + goto err_periph_clk_disable; + } + + pm_runtime_get_sync(dev->dev); + ret = drm_irq_install(dev, dc->hlcdc->irq); + pm_runtime_put_sync(dev->dev); + if (ret < 0) { + dev_err(dev->dev, "failed to install IRQ handler\n"); + goto err_periph_clk_disable; + } + + platform_set_drvdata(pdev, dev); + + drm_kms_helper_poll_init(dev); + + /* force connectors detection */ + drm_helper_hpd_irq_event(dev); + + return 0; + +err_periph_clk_disable: + pm_runtime_disable(dev->dev); + clk_disable_unprepare(dc->hlcdc->periph_clk); + +err_destroy_wq: + destroy_workqueue(dc->wq); + + return ret; +} + +static void atmel_hlcdc_dc_unload(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + if (dc->fbdev) + drm_fbdev_cma_fini(dc->fbdev); + flush_workqueue(dc->wq); + drm_kms_helper_poll_fini(dev); + drm_mode_config_cleanup(dev); + drm_vblank_cleanup(dev); + + pm_runtime_get_sync(dev->dev); + drm_irq_uninstall(dev); + pm_runtime_put_sync(dev->dev); + + dev->dev_private = NULL; + + pm_runtime_disable(dev->dev); + clk_disable_unprepare(dc->hlcdc->periph_clk); + destroy_workqueue(dc->wq); +} + +static int atmel_hlcdc_dc_connector_plug_all(struct drm_device *dev) +{ + struct drm_connector *connector, *failed; + int ret; + + mutex_lock(&dev->mode_config.mutex); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + ret = drm_connector_register(connector); + if (ret) { + failed = connector; + goto err; + } + } + mutex_unlock(&dev->mode_config.mutex); + return 0; + +err: + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (failed == connector) + break; + + drm_connector_unregister(connector); + } + mutex_unlock(&dev->mode_config.mutex); + + return ret; +} + +static void atmel_hlcdc_dc_connector_unplug_all(struct drm_device *dev) +{ + mutex_lock(&dev->mode_config.mutex); + drm_connector_unplug_all(dev); + mutex_unlock(&dev->mode_config.mutex); +} + +static void atmel_hlcdc_dc_preclose(struct drm_device *dev, + struct drm_file *file) +{ + struct drm_crtc *crtc; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) + atmel_hlcdc_crtc_cancel_page_flip(crtc, file); +} + +static void atmel_hlcdc_dc_lastclose(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + drm_fbdev_cma_restore_mode(dc->fbdev); +} + +static int atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned int cfg = 0; + int i; + + /* Enable interrupts on activated layers */ + for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) { + if (dc->layers[i]) + cfg |= ATMEL_HLCDC_LAYER_STATUS(i); + } + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg); + + return 0; +} + +static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + unsigned int isr; + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff); + regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr); +} + +static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev, int crtc) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + /* Enable SOF (Start Of Frame) interrupt for vblank counting */ + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, ATMEL_HLCDC_SOF); + + return 0; +} + +static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev, int crtc) +{ + struct atmel_hlcdc_dc *dc = dev->dev_private; + + regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, ATMEL_HLCDC_SOF); +} + +static const struct file_operations fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .poll = drm_poll, + .read = drm_read, + .llseek = no_llseek, + .mmap = drm_gem_cma_mmap, +}; + +static struct drm_driver atmel_hlcdc_dc_driver = { + .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET, + .preclose = atmel_hlcdc_dc_preclose, + .lastclose = atmel_hlcdc_dc_lastclose, + .irq_handler = atmel_hlcdc_dc_irq_handler, + .irq_preinstall = atmel_hlcdc_dc_irq_uninstall, + .irq_postinstall = atmel_hlcdc_dc_irq_postinstall, + .irq_uninstall = atmel_hlcdc_dc_irq_uninstall, + .get_vblank_counter = drm_vblank_count, + .enable_vblank = atmel_hlcdc_dc_enable_vblank, + .disable_vblank = atmel_hlcdc_dc_disable_vblank, + .gem_free_object = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + .dumb_create = drm_gem_cma_dumb_create, + .dumb_map_offset = drm_gem_cma_dumb_map_offset, + .dumb_destroy = drm_gem_dumb_destroy, + .fops = &fops, + .name = "atmel-hlcdc", + .desc = "Atmel HLCD Controller DRM", + .date = "20141504", + .major = 1, + .minor = 0, +}; + +static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev) +{ + struct drm_device *ddev; + int ret; + + ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev); + if (!ddev) + return -ENOMEM; + + ret = drm_dev_set_unique(ddev, dev_name(ddev->dev)); + if (ret) + goto err_unref; + + ret = atmel_hlcdc_dc_load(ddev); + if (ret) + goto err_unref; + + ret = drm_dev_register(ddev, 0); + if (ret) + goto err_unload; + + ret = atmel_hlcdc_dc_connector_plug_all(ddev); + if (ret) + goto err_unregister; + + return 0; + +err_unregister: + drm_dev_unregister(ddev); + +err_unload: + atmel_hlcdc_dc_unload(ddev); + +err_unref: + drm_dev_unref(ddev); + + return ret; +} + +static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev) +{ + struct drm_device *ddev = platform_get_drvdata(pdev); + + atmel_hlcdc_dc_connector_unplug_all(ddev); + drm_dev_unregister(ddev); + atmel_hlcdc_dc_unload(ddev); + drm_dev_unref(ddev); + + return 0; +} + +static const struct of_device_id atmel_hlcdc_dc_of_match[] = { + { .compatible = "atmel,hlcdc-display-controller" }, + { }, +}; + +static struct platform_driver atmel_hlcdc_dc_platform_driver = { + .probe = atmel_hlcdc_dc_drm_probe, + .remove = atmel_hlcdc_dc_drm_remove, + .driver = { + .name = "atmel-hlcdc-display-controller", + .of_match_table = atmel_hlcdc_dc_of_match, + }, +}; +module_platform_driver(atmel_hlcdc_dc_platform_driver); + +MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>"); +MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); +MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:atmel-hlcdc-dc"); diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_d |