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Diffstat (limited to 'rr-cache/7eb162052ab66184b34a71dcf9e3e031877cb1df/postimage')
| -rw-r--r-- | rr-cache/7eb162052ab66184b34a71dcf9e3e031877cb1df/postimage | 368 |
1 files changed, 0 insertions, 368 deletions
diff --git a/rr-cache/7eb162052ab66184b34a71dcf9e3e031877cb1df/postimage b/rr-cache/7eb162052ab66184b34a71dcf9e3e031877cb1df/postimage deleted file mode 100644 index 4d17fb96e77c..000000000000 --- a/rr-cache/7eb162052ab66184b34a71dcf9e3e031877cb1df/postimage +++ /dev/null @@ -1,368 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * i.MX drm driver - parallel display implementation - * - * Copyright (C) 2012 Sascha Hauer, Pengutronix - */ - -#include <linux/component.h> -#include <linux/media-bus-format.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/videodev2.h> - -#include <video/of_display_timing.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_bridge.h> -#include <drm/drm_managed.h> -#include <drm/drm_of.h> -#include <drm/drm_panel.h> -#include <drm/drm_probe_helper.h> -#include <drm/drm_simple_kms_helper.h> - -#include "imx-drm.h" - -struct imx_parallel_display_encoder { - struct drm_connector connector; - struct drm_encoder encoder; - struct drm_bridge bridge; - struct imx_parallel_display *pd; -}; - -struct imx_parallel_display { - struct device *dev; - u32 bus_format; - u32 bus_flags; - struct drm_display_mode mode; - struct drm_panel *panel; - struct drm_bridge *next_bridge; -}; - -static inline struct imx_parallel_display *con_to_imxpd(struct drm_connector *c) -{ - return container_of(c, struct imx_parallel_display_encoder, connector)->pd; -} - -static inline struct imx_parallel_display *bridge_to_imxpd(struct drm_bridge *b) -{ - return container_of(b, struct imx_parallel_display_encoder, bridge)->pd; -} - -static int imx_pd_connector_get_modes(struct drm_connector *connector) -{ - struct imx_parallel_display *imxpd = con_to_imxpd(connector); - struct device_node *np = imxpd->dev->of_node; - int num_modes; - - num_modes = drm_panel_get_modes(imxpd->panel, connector); - if (num_modes > 0) - return num_modes; - - if (np) { - struct drm_display_mode *mode = drm_mode_create(connector->dev); - int ret; - - if (!mode) - return 0; - - ret = of_get_drm_display_mode(np, &imxpd->mode, - &imxpd->bus_flags, - OF_USE_NATIVE_MODE); - if (ret) { - drm_mode_destroy(connector->dev, mode); - return 0; - } - - drm_mode_copy(mode, &imxpd->mode); - mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; - drm_mode_probed_add(connector, mode); - num_modes++; - } - - return num_modes; -} - -static void imx_pd_bridge_enable(struct drm_bridge *bridge) -{ - struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); - - drm_panel_prepare(imxpd->panel); - drm_panel_enable(imxpd->panel); -} - -static void imx_pd_bridge_disable(struct drm_bridge *bridge) -{ - struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); - - drm_panel_disable(imxpd->panel); - drm_panel_unprepare(imxpd->panel); -} - -static const u32 imx_pd_bus_fmts[] = { - MEDIA_BUS_FMT_RGB888_1X24, - MEDIA_BUS_FMT_BGR888_1X24, - MEDIA_BUS_FMT_GBR888_1X24, - MEDIA_BUS_FMT_RGB666_1X18, - MEDIA_BUS_FMT_RGB666_1X24_CPADHI, - MEDIA_BUS_FMT_RGB565_1X16, -}; - -static u32 * -imx_pd_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - unsigned int *num_output_fmts) -{ - struct drm_display_info *di = &conn_state->connector->display_info; - struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); - u32 *output_fmts; - - if (!imxpd->bus_format && !di->num_bus_formats) { - *num_output_fmts = ARRAY_SIZE(imx_pd_bus_fmts); - return kmemdup(imx_pd_bus_fmts, sizeof(imx_pd_bus_fmts), - GFP_KERNEL); - } - - *num_output_fmts = 1; - output_fmts = kmalloc(sizeof(*output_fmts), GFP_KERNEL); - if (!output_fmts) - return NULL; - - if (!imxpd->bus_format && di->num_bus_formats) - output_fmts[0] = di->bus_formats[0]; - else - output_fmts[0] = imxpd->bus_format; - - return output_fmts; -} - -static bool imx_pd_format_supported(u32 output_fmt) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(imx_pd_bus_fmts); i++) { - if (imx_pd_bus_fmts[i] == output_fmt) - return true; - } - - return false; -} - -static u32 * -imx_pd_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - u32 output_fmt, - unsigned int *num_input_fmts) -{ - struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); - u32 *input_fmts; - - /* - * If the next bridge does not support bus format negotiation, let's - * use the static bus format definition (imxpd->bus_format) if it's - * specified, RGB888 when it's not. - */ - if (output_fmt == MEDIA_BUS_FMT_FIXED) - output_fmt = imxpd->bus_format ? : MEDIA_BUS_FMT_RGB888_1X24; - - /* Now make sure the requested output format is supported. */ - if ((imxpd->bus_format && imxpd->bus_format != output_fmt) || - !imx_pd_format_supported(output_fmt)) { - *num_input_fmts = 0; - return NULL; - } - - *num_input_fmts = 1; - input_fmts = kmalloc(sizeof(*input_fmts), GFP_KERNEL); - if (!input_fmts) - return NULL; - - input_fmts[0] = output_fmt; - return input_fmts; -} - -static int imx_pd_bridge_atomic_check(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) -{ - struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state); - struct drm_display_info *di = &conn_state->connector->display_info; - struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); - struct drm_bridge_state *next_bridge_state = NULL; - struct drm_bridge *next_bridge; - u32 bus_flags, bus_fmt; - - next_bridge = drm_bridge_get_next_bridge(bridge); - if (next_bridge) - next_bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state, - next_bridge); - - if (next_bridge_state) - bus_flags = next_bridge_state->input_bus_cfg.flags; - else if (di->num_bus_formats) - bus_flags = di->bus_flags; - else - bus_flags = imxpd->bus_flags; - - bus_fmt = bridge_state->input_bus_cfg.format; - if (!imx_pd_format_supported(bus_fmt)) - return -EINVAL; - - bridge_state->output_bus_cfg.flags = bus_flags; - bridge_state->input_bus_cfg.flags = bus_flags; - imx_crtc_state->bus_flags = bus_flags; - imx_crtc_state->bus_format = bridge_state->input_bus_cfg.format; - imx_crtc_state->di_hsync_pin = 2; - imx_crtc_state->di_vsync_pin = 3; - - return 0; -} - -static const struct drm_connector_funcs imx_pd_connector_funcs = { - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = imx_drm_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 const struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = { - .get_modes = imx_pd_connector_get_modes, -}; - -static const struct drm_bridge_funcs imx_pd_bridge_funcs = { - .enable = imx_pd_bridge_enable, - .disable = imx_pd_bridge_disable, - .atomic_reset = drm_atomic_helper_bridge_reset, - .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, - .atomic_check = imx_pd_bridge_atomic_check, - .atomic_get_input_bus_fmts = imx_pd_bridge_atomic_get_input_bus_fmts, - .atomic_get_output_bus_fmts = imx_pd_bridge_atomic_get_output_bus_fmts, -}; - -static int imx_pd_bind(struct device *dev, struct device *master, void *data) -{ - struct drm_device *drm = data; - struct imx_parallel_display *imxpd = dev_get_drvdata(dev); - struct imx_parallel_display_encoder *imxpd_encoder; - struct drm_connector *connector; - struct drm_encoder *encoder; - struct drm_bridge *bridge; - int ret; - - imxpd_encoder = drmm_simple_encoder_alloc(drm, struct imx_parallel_display_encoder, - encoder, DRM_MODE_ENCODER_NONE); - if (IS_ERR(imxpd_encoder)) - return PTR_ERR(imxpd_encoder); - - imxpd_encoder->pd = imxpd; - connector = &imxpd_encoder->connector; - encoder = &imxpd_encoder->encoder; - bridge = &imxpd_encoder->bridge; - - ret = imx_drm_encoder_parse_of(drm, encoder, imxpd->dev->of_node); - if (ret) - return ret; - - /* set the connector's dpms to OFF so that - * drm_helper_connector_dpms() won't return - * immediately since the current state is ON - * at this point. - */ - connector->dpms = DRM_MODE_DPMS_OFF; - - bridge->funcs = &imx_pd_bridge_funcs; - drm_bridge_attach(encoder, bridge, NULL, 0); - - if (imxpd->next_bridge) { - ret = drm_bridge_attach(encoder, imxpd->next_bridge, bridge, 0); - if (ret < 0) - return ret; - } else { - drm_connector_helper_add(connector, - &imx_pd_connector_helper_funcs); - drm_connector_init(drm, connector, &imx_pd_connector_funcs, - DRM_MODE_CONNECTOR_DPI); - - drm_connector_attach_encoder(connector, encoder); - } - - return 0; -} - -static const struct component_ops imx_pd_ops = { - .bind = imx_pd_bind, -}; - -static int imx_pd_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - struct imx_parallel_display *imxpd; - int ret; - u32 bus_format = 0; - const char *fmt; - - imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL); - if (!imxpd) - return -ENOMEM; - - /* port@1 is the output port */ - ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, - &imxpd->next_bridge); - if (ret && ret != -ENODEV) - return ret; - - ret = of_property_read_string(np, "interface-pix-fmt", &fmt); - if (!ret) { - if (!strcmp(fmt, "rgb24")) - bus_format = MEDIA_BUS_FMT_RGB888_1X24; - else if (!strcmp(fmt, "rgb565")) - bus_format = MEDIA_BUS_FMT_RGB565_1X16; - else if (!strcmp(fmt, "bgr666")) - bus_format = MEDIA_BUS_FMT_RGB666_1X18; - else if (!strcmp(fmt, "lvds666")) - bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI; - } - imxpd->bus_format = bus_format; - - imxpd->dev = dev; - - platform_set_drvdata(pdev, imxpd); - - return component_add(dev, &imx_pd_ops); -} - -static void imx_pd_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &imx_pd_ops); -} - -static const struct of_device_id imx_pd_dt_ids[] = { - { .compatible = "fsl,imx-parallel-display", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, imx_pd_dt_ids); - -static struct platform_driver imx_pd_driver = { - .probe = imx_pd_probe, - .remove_new = imx_pd_remove, - .driver = { - .of_match_table = imx_pd_dt_ids, - .name = "imx-parallel-display", - }, -}; - -module_platform_driver(imx_pd_driver); - -MODULE_DESCRIPTION("i.MX parallel display driver"); -MODULE_AUTHOR("Sascha Hauer, Pengutronix"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx-parallel-display"); |