From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 617 +++++++++++++++++++++ 1 file changed, 617 insertions(+) create mode 100644 kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c (limited to 'kernel/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c') 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 + * Author: Boris BREZILLON + * + * 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 . + */ + +#include +#include +#include +#include +#include + +#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 "); +MODULE_AUTHOR("Boris Brezillon "); +MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:atmel-hlcdc-dc"); -- cgit 1.2.3-korg