| /* |
| * Freescale i.MX drm driver |
| * |
| * Copyright (C) 2011 Sascha Hauer, Pengutronix |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * 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. |
| * |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/platform_device.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_fb_helper.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <linux/fb.h> |
| #include <linux/module.h> |
| #include <drm/drm_gem_cma_helper.h> |
| #include <drm/drm_fb_cma_helper.h> |
| |
| #include "imx-drm.h" |
| |
| #define MAX_CRTC 4 |
| |
| struct crtc_cookie { |
| void *cookie; |
| int id; |
| struct list_head list; |
| }; |
| |
| struct imx_drm_device { |
| struct drm_device *drm; |
| struct device *dev; |
| struct list_head crtc_list; |
| struct list_head encoder_list; |
| struct list_head connector_list; |
| struct mutex mutex; |
| int pipes; |
| struct drm_fbdev_cma *fbhelper; |
| }; |
| |
| struct imx_drm_crtc { |
| struct drm_crtc *crtc; |
| struct list_head list; |
| struct imx_drm_device *imxdrm; |
| int pipe; |
| struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs; |
| struct module *owner; |
| struct crtc_cookie cookie; |
| }; |
| |
| struct imx_drm_encoder { |
| struct drm_encoder *encoder; |
| struct list_head list; |
| struct module *owner; |
| struct list_head possible_crtcs; |
| }; |
| |
| struct imx_drm_connector { |
| struct drm_connector *connector; |
| struct list_head list; |
| struct module *owner; |
| }; |
| |
| int imx_drm_crtc_id(struct imx_drm_crtc *crtc) |
| { |
| return crtc->pipe; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_crtc_id); |
| |
| static void imx_drm_driver_lastclose(struct drm_device *drm) |
| { |
| struct imx_drm_device *imxdrm = drm->dev_private; |
| |
| if (imxdrm->fbhelper) |
| drm_fbdev_cma_restore_mode(imxdrm->fbhelper); |
| } |
| |
| static int imx_drm_driver_unload(struct drm_device *drm) |
| { |
| struct imx_drm_device *imxdrm = drm->dev_private; |
| |
| imx_drm_device_put(); |
| |
| drm_vblank_cleanup(imxdrm->drm); |
| drm_kms_helper_poll_fini(imxdrm->drm); |
| drm_mode_config_cleanup(imxdrm->drm); |
| |
| return 0; |
| } |
| |
| /* |
| * We don't care at all for crtc numbers, but the core expects the |
| * crtcs to be numbered |
| */ |
| static struct imx_drm_crtc *imx_drm_crtc_by_num(struct imx_drm_device *imxdrm, |
| int num) |
| { |
| struct imx_drm_crtc *imx_drm_crtc; |
| |
| list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) |
| if (imx_drm_crtc->pipe == num) |
| return imx_drm_crtc; |
| return NULL; |
| } |
| |
| int imx_drm_crtc_panel_format_pins(struct drm_crtc *crtc, u32 encoder_type, |
| u32 interface_pix_fmt, int hsync_pin, int vsync_pin) |
| { |
| struct imx_drm_device *imxdrm = crtc->dev->dev_private; |
| struct imx_drm_crtc *imx_crtc; |
| struct imx_drm_crtc_helper_funcs *helper; |
| |
| list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) |
| if (imx_crtc->crtc == crtc) |
| goto found; |
| |
| return -EINVAL; |
| found: |
| helper = &imx_crtc->imx_drm_helper_funcs; |
| if (helper->set_interface_pix_fmt) |
| return helper->set_interface_pix_fmt(crtc, |
| encoder_type, interface_pix_fmt, |
| hsync_pin, vsync_pin); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins); |
| |
| int imx_drm_crtc_panel_format(struct drm_crtc *crtc, u32 encoder_type, |
| u32 interface_pix_fmt) |
| { |
| return imx_drm_crtc_panel_format_pins(crtc, encoder_type, |
| interface_pix_fmt, 2, 3); |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format); |
| |
| int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc) |
| { |
| return drm_vblank_get(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get); |
| |
| void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc) |
| { |
| drm_vblank_put(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put); |
| |
| void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc) |
| { |
| drm_handle_vblank(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_handle_vblank); |
| |
| static int imx_drm_enable_vblank(struct drm_device *drm, int crtc) |
| { |
| struct imx_drm_device *imxdrm = drm->dev_private; |
| struct imx_drm_crtc *imx_drm_crtc; |
| int ret; |
| |
| imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); |
| if (!imx_drm_crtc) |
| return -EINVAL; |
| |
| if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank) |
| return -ENOSYS; |
| |
| ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank( |
| imx_drm_crtc->crtc); |
| |
| return ret; |
| } |
| |
| static void imx_drm_disable_vblank(struct drm_device *drm, int crtc) |
| { |
| struct imx_drm_device *imxdrm = drm->dev_private; |
| struct imx_drm_crtc *imx_drm_crtc; |
| |
| imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); |
| if (!imx_drm_crtc) |
| return; |
| |
| if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank) |
| return; |
| |
| imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc); |
| } |
| |
| static void imx_drm_driver_preclose(struct drm_device *drm, |
| struct drm_file *file) |
| { |
| int i; |
| |
| if (!file->is_master) |
| return; |
| |
| for (i = 0; i < MAX_CRTC; i++) |
| imx_drm_disable_vblank(drm, i); |
| } |
| |
| static const struct file_operations imx_drm_driver_fops = { |
| .owner = THIS_MODULE, |
| .open = drm_open, |
| .release = drm_release, |
| .unlocked_ioctl = drm_ioctl, |
| .mmap = drm_gem_cma_mmap, |
| .poll = drm_poll, |
| .read = drm_read, |
| .llseek = noop_llseek, |
| }; |
| |
| static struct imx_drm_device *imx_drm_device; |
| |
| static struct imx_drm_device *__imx_drm_device(void) |
| { |
| return imx_drm_device; |
| } |
| |
| struct drm_device *imx_drm_device_get(void) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_encoder *enc; |
| struct imx_drm_connector *con; |
| struct imx_drm_crtc *crtc; |
| |
| list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
| if (!try_module_get(enc->owner)) { |
| dev_err(imxdrm->dev, "could not get module %s\n", |
| module_name(enc->owner)); |
| goto unwind_enc; |
| } |
| } |
| |
| list_for_each_entry(con, &imxdrm->connector_list, list) { |
| if (!try_module_get(con->owner)) { |
| dev_err(imxdrm->dev, "could not get module %s\n", |
| module_name(con->owner)); |
| goto unwind_con; |
| } |
| } |
| |
| list_for_each_entry(crtc, &imxdrm->crtc_list, list) { |
| if (!try_module_get(crtc->owner)) { |
| dev_err(imxdrm->dev, "could not get module %s\n", |
| module_name(crtc->owner)); |
| goto unwind_crtc; |
| } |
| } |
| |
| return imxdrm->drm; |
| |
| unwind_crtc: |
| list_for_each_entry_continue_reverse(crtc, &imxdrm->crtc_list, list) |
| module_put(crtc->owner); |
| unwind_con: |
| list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list) |
| module_put(con->owner); |
| unwind_enc: |
| list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list) |
| module_put(enc->owner); |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| return NULL; |
| |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_device_get); |
| |
| void imx_drm_device_put(void) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_encoder *enc; |
| struct imx_drm_connector *con; |
| struct imx_drm_crtc *crtc; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| list_for_each_entry(crtc, &imxdrm->crtc_list, list) |
| module_put(crtc->owner); |
| |
| list_for_each_entry(con, &imxdrm->connector_list, list) |
| module_put(con->owner); |
| |
| list_for_each_entry(enc, &imxdrm->encoder_list, list) |
| module_put(enc->owner); |
| |
| mutex_unlock(&imxdrm->mutex); |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_device_put); |
| |
| static int drm_mode_group_reinit(struct drm_device *dev) |
| { |
| struct drm_mode_group *group = &dev->primary->mode_group; |
| uint32_t *id_list = group->id_list; |
| int ret; |
| |
| ret = drm_mode_group_init_legacy_group(dev, group); |
| if (ret < 0) |
| return ret; |
| |
| kfree(id_list); |
| return 0; |
| } |
| |
| /* |
| * register an encoder to the drm core |
| */ |
| static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs); |
| |
| drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder, |
| imx_drm_encoder->encoder->funcs, |
| imx_drm_encoder->encoder->encoder_type); |
| |
| drm_mode_group_reinit(imxdrm->drm); |
| |
| return 0; |
| } |
| |
| /* |
| * unregister an encoder from the drm core |
| */ |
| static void imx_drm_encoder_unregister(struct imx_drm_encoder |
| *imx_drm_encoder) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| drm_encoder_cleanup(imx_drm_encoder->encoder); |
| |
| drm_mode_group_reinit(imxdrm->drm); |
| } |
| |
| /* |
| * register a connector to the drm core |
| */ |
| static int imx_drm_connector_register( |
| struct imx_drm_connector *imx_drm_connector) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| drm_connector_init(imxdrm->drm, imx_drm_connector->connector, |
| imx_drm_connector->connector->funcs, |
| imx_drm_connector->connector->connector_type); |
| drm_mode_group_reinit(imxdrm->drm); |
| |
| return drm_sysfs_connector_add(imx_drm_connector->connector); |
| } |
| |
| /* |
| * unregister a connector from the drm core |
| */ |
| static void imx_drm_connector_unregister( |
| struct imx_drm_connector *imx_drm_connector) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| drm_sysfs_connector_remove(imx_drm_connector->connector); |
| drm_connector_cleanup(imx_drm_connector->connector); |
| |
| drm_mode_group_reinit(imxdrm->drm); |
| } |
| |
| /* |
| * register a crtc to the drm core |
| */ |
| static int imx_drm_crtc_register(struct imx_drm_crtc *imx_drm_crtc) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| int ret; |
| |
| ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256); |
| if (ret) |
| return ret; |
| |
| drm_crtc_helper_add(imx_drm_crtc->crtc, |
| imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs); |
| |
| drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc, |
| imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); |
| |
| drm_mode_group_reinit(imxdrm->drm); |
| |
| return 0; |
| } |
| |
| /* |
| * Called by the CRTC driver when all CRTCs are registered. This |
| * puts all the pieces together and initializes the driver. |
| * Once this is called no more CRTCs can be registered since |
| * the drm core has hardcoded the number of crtcs in several |
| * places. |
| */ |
| static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| int ret; |
| |
| imxdrm->drm = drm; |
| |
| drm->dev_private = imxdrm; |
| |
| /* |
| * enable drm irq mode. |
| * - with irq_enabled = true, we can use the vblank feature. |
| * |
| * P.S. note that we wouldn't use drm irq handler but |
| * just specific driver own one instead because |
| * drm framework supports only one irq handler and |
| * drivers can well take care of their interrupts |
| */ |
| drm->irq_enabled = true; |
| |
| drm_mode_config_init(drm); |
| imx_drm_mode_config_init(drm); |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| drm_kms_helper_poll_init(imxdrm->drm); |
| |
| /* setup the grouping for the legacy output */ |
| ret = drm_mode_group_init_legacy_group(imxdrm->drm, |
| &imxdrm->drm->primary->mode_group); |
| if (ret) |
| goto err_kms; |
| |
| ret = drm_vblank_init(imxdrm->drm, MAX_CRTC); |
| if (ret) |
| goto err_kms; |
| |
| /* |
| * with vblank_disable_allowed = true, vblank interrupt will be disabled |
| * by drm timer once a current process gives up ownership of |
| * vblank event.(after drm_vblank_put function is called) |
| */ |
| imxdrm->drm->vblank_disable_allowed = true; |
| |
| if (!imx_drm_device_get()) { |
| ret = -EINVAL; |
| goto err_vblank; |
| } |
| |
| mutex_unlock(&imxdrm->mutex); |
| return 0; |
| |
| err_vblank: |
| drm_vblank_cleanup(drm); |
| err_kms: |
| drm_kms_helper_poll_fini(drm); |
| drm_mode_config_cleanup(drm); |
| mutex_unlock(&imxdrm->mutex); |
| |
| return ret; |
| } |
| |
| static void imx_drm_update_possible_crtcs(void) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_crtc *imx_drm_crtc; |
| struct imx_drm_encoder *enc; |
| struct crtc_cookie *cookie; |
| |
| list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
| u32 possible_crtcs = 0; |
| |
| list_for_each_entry(cookie, &enc->possible_crtcs, list) { |
| list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) { |
| if (imx_drm_crtc->cookie.cookie == cookie->cookie && |
| imx_drm_crtc->cookie.id == cookie->id) { |
| possible_crtcs |= 1 << imx_drm_crtc->pipe; |
| } |
| } |
| } |
| enc->encoder->possible_crtcs = possible_crtcs; |
| enc->encoder->possible_clones = possible_crtcs; |
| } |
| } |
| |
| /* |
| * imx_drm_add_crtc - add a new crtc |
| * |
| * The return value if !NULL is a cookie for the caller to pass to |
| * imx_drm_remove_crtc later. |
| */ |
| int imx_drm_add_crtc(struct drm_crtc *crtc, |
| struct imx_drm_crtc **new_crtc, |
| const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, |
| struct module *owner, void *cookie, int id) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_crtc *imx_drm_crtc; |
| int ret; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| /* |
| * The vblank arrays are dimensioned by MAX_CRTC - we can't |
| * pass IDs greater than this to those functions. |
| */ |
| if (imxdrm->pipes >= MAX_CRTC) { |
| ret = -EINVAL; |
| goto err_busy; |
| } |
| |
| if (imxdrm->drm->open_count) { |
| ret = -EBUSY; |
| goto err_busy; |
| } |
| |
| imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); |
| if (!imx_drm_crtc) { |
| ret = -ENOMEM; |
| goto err_alloc; |
| } |
| |
| imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; |
| imx_drm_crtc->pipe = imxdrm->pipes++; |
| imx_drm_crtc->cookie.cookie = cookie; |
| imx_drm_crtc->cookie.id = id; |
| |
| imx_drm_crtc->crtc = crtc; |
| imx_drm_crtc->imxdrm = imxdrm; |
| |
| imx_drm_crtc->owner = owner; |
| |
| list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list); |
| |
| *new_crtc = imx_drm_crtc; |
| |
| ret = imx_drm_crtc_register(imx_drm_crtc); |
| if (ret) |
| goto err_register; |
| |
| imx_drm_update_possible_crtcs(); |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| return 0; |
| |
| err_register: |
| list_del(&imx_drm_crtc->list); |
| kfree(imx_drm_crtc); |
| err_alloc: |
| err_busy: |
| mutex_unlock(&imxdrm->mutex); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_add_crtc); |
| |
| /* |
| * imx_drm_remove_crtc - remove a crtc |
| */ |
| int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) |
| { |
| struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| drm_crtc_cleanup(imx_drm_crtc->crtc); |
| |
| list_del(&imx_drm_crtc->list); |
| |
| drm_mode_group_reinit(imxdrm->drm); |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| kfree(imx_drm_crtc); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); |
| |
| /* |
| * imx_drm_add_encoder - add a new encoder |
| */ |
| int imx_drm_add_encoder(struct drm_encoder *encoder, |
| struct imx_drm_encoder **newenc, struct module *owner) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_encoder *imx_drm_encoder; |
| int ret; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| if (imxdrm->drm->open_count) { |
| ret = -EBUSY; |
| goto err_busy; |
| } |
| |
| imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL); |
| if (!imx_drm_encoder) { |
| ret = -ENOMEM; |
| goto err_alloc; |
| } |
| |
| imx_drm_encoder->encoder = encoder; |
| imx_drm_encoder->owner = owner; |
| |
| ret = imx_drm_encoder_register(imx_drm_encoder); |
| if (ret) { |
| ret = -ENOMEM; |
| goto err_register; |
| } |
| |
| list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list); |
| |
| *newenc = imx_drm_encoder; |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| return 0; |
| |
| err_register: |
| kfree(imx_drm_encoder); |
| err_alloc: |
| err_busy: |
| mutex_unlock(&imxdrm->mutex); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_add_encoder); |
| |
| int imx_drm_encoder_add_possible_crtcs( |
| struct imx_drm_encoder *imx_drm_encoder, |
| struct device_node *np) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct of_phandle_args args; |
| struct crtc_cookie *c; |
| int ret = 0; |
| int i; |
| |
| if (!list_empty(&imx_drm_encoder->possible_crtcs)) |
| return -EBUSY; |
| |
| for (i = 0; !ret; i++) { |
| ret = of_parse_phandle_with_args(np, "crtcs", |
| "#crtc-cells", i, &args); |
| if (ret < 0) |
| break; |
| |
| c = kzalloc(sizeof(*c), GFP_KERNEL); |
| if (!c) { |
| of_node_put(args.np); |
| return -ENOMEM; |
| } |
| |
| c->cookie = args.np; |
| c->id = args.args_count > 0 ? args.args[0] : 0; |
| |
| of_node_put(args.np); |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs); |
| |
| mutex_unlock(&imxdrm->mutex); |
| } |
| |
| imx_drm_update_possible_crtcs(); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs); |
| |
| int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder, |
| struct drm_crtc *crtc) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_crtc *imx_crtc; |
| int i = 0; |
| |
| list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) { |
| if (imx_crtc->crtc == crtc) |
| goto found; |
| i++; |
| } |
| |
| return -EINVAL; |
| found: |
| return i; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
| |
| /* |
| * imx_drm_remove_encoder - remove an encoder |
| */ |
| int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct crtc_cookie *c, *tmp; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| imx_drm_encoder_unregister(imx_drm_encoder); |
| |
| list_del(&imx_drm_encoder->list); |
| |
| list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs, |
| list) |
| kfree(c); |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| kfree(imx_drm_encoder); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_remove_encoder); |
| |
| /* |
| * imx_drm_add_connector - add a connector |
| */ |
| int imx_drm_add_connector(struct drm_connector *connector, |
| struct imx_drm_connector **new_con, |
| struct module *owner) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| struct imx_drm_connector *imx_drm_connector; |
| int ret; |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| if (imxdrm->drm->open_count) { |
| ret = -EBUSY; |
| goto err_busy; |
| } |
| |
| imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL); |
| if (!imx_drm_connector) { |
| ret = -ENOMEM; |
| goto err_alloc; |
| } |
| |
| imx_drm_connector->connector = connector; |
| imx_drm_connector->owner = owner; |
| |
| ret = imx_drm_connector_register(imx_drm_connector); |
| if (ret) |
| goto err_register; |
| |
| list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list); |
| |
| *new_con = imx_drm_connector; |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| return 0; |
| |
| err_register: |
| kfree(imx_drm_connector); |
| err_alloc: |
| err_busy: |
| mutex_unlock(&imxdrm->mutex); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_add_connector); |
| |
| void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| imxdrm->fbhelper = fbdev_helper; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set); |
| |
| /* |
| * imx_drm_remove_connector - remove a connector |
| */ |
| int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector) |
| { |
| struct imx_drm_device *imxdrm = __imx_drm_device(); |
| |
| mutex_lock(&imxdrm->mutex); |
| |
| imx_drm_connector_unregister(imx_drm_connector); |
| |
| list_del(&imx_drm_connector->list); |
| |
| mutex_unlock(&imxdrm->mutex); |
| |
| kfree(imx_drm_connector); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(imx_drm_remove_connector); |
| |
| static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
| /* none so far */ |
| }; |
| |
| static struct drm_driver imx_drm_driver = { |
| .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
| .load = imx_drm_driver_load, |
| .unload = imx_drm_driver_unload, |
| .lastclose = imx_drm_driver_lastclose, |
| .preclose = imx_drm_driver_preclose, |
| .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, |
| |
| .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
| .prime_fd_to_handle = drm_gem_prime_fd_to_handle, |
| .gem_prime_import = drm_gem_prime_import, |
| .gem_prime_export = drm_gem_prime_export, |
| .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, |
| .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, |
| .gem_prime_vmap = drm_gem_cma_prime_vmap, |
| .gem_prime_vunmap = drm_gem_cma_prime_vunmap, |
| .gem_prime_mmap = drm_gem_cma_prime_mmap, |
| .get_vblank_counter = drm_vblank_count, |
| .enable_vblank = imx_drm_enable_vblank, |
| .disable_vblank = imx_drm_disable_vblank, |
| .ioctls = imx_drm_ioctls, |
| .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), |
| .fops = &imx_drm_driver_fops, |
| .name = "imx-drm", |
| .desc = "i.MX DRM graphics", |
| .date = "20120507", |
| .major = 1, |
| .minor = 0, |
| .patchlevel = 0, |
| }; |
| |
| static int imx_drm_platform_probe(struct platform_device *pdev) |
| { |
| int ret; |
| |
| ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
| if (ret) |
| return ret; |
| |
| imx_drm_device->dev = &pdev->dev; |
| |
| return drm_platform_init(&imx_drm_driver, pdev); |
| } |
| |
| static int imx_drm_platform_remove(struct platform_device *pdev) |
| { |
| drm_platform_exit(&imx_drm_driver, pdev); |
| |
| return 0; |
| } |
| |
| static struct platform_driver imx_drm_pdrv = { |
| .probe = imx_drm_platform_probe, |
| .remove = imx_drm_platform_remove, |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "imx-drm", |
| }, |
| }; |
| |
| static struct platform_device *imx_drm_pdev; |
| |
| static int __init imx_drm_init(void) |
| { |
| int ret; |
| |
| imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL); |
| if (!imx_drm_device) |
| return -ENOMEM; |
| |
| mutex_init(&imx_drm_device->mutex); |
| INIT_LIST_HEAD(&imx_drm_device->crtc_list); |
| INIT_LIST_HEAD(&imx_drm_device->connector_list); |
| INIT_LIST_HEAD(&imx_drm_device->encoder_list); |
| |
| imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0); |
| if (IS_ERR(imx_drm_pdev)) { |
| ret = PTR_ERR(imx_drm_pdev); |
| goto err_pdev; |
| } |
| |
| ret = platform_driver_register(&imx_drm_pdrv); |
| if (ret) |
| goto err_pdrv; |
| |
| return 0; |
| |
| err_pdrv: |
| platform_device_unregister(imx_drm_pdev); |
| err_pdev: |
| kfree(imx_drm_device); |
| |
| return ret; |
| } |
| |
| static void __exit imx_drm_exit(void) |
| { |
| platform_device_unregister(imx_drm_pdev); |
| platform_driver_unregister(&imx_drm_pdrv); |
| |
| kfree(imx_drm_device); |
| } |
| |
| module_init(imx_drm_init); |
| module_exit(imx_drm_exit); |
| |
| MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); |
| MODULE_DESCRIPTION("i.MX drm driver core"); |
| MODULE_LICENSE("GPL"); |