From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/tidss/tidss_encoder.c | 96 +++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 drivers/gpu/drm/tidss/tidss_encoder.c (limited to 'drivers/gpu/drm/tidss/tidss_encoder.c') diff --git a/drivers/gpu/drm/tidss/tidss_encoder.c b/drivers/gpu/drm/tidss/tidss_encoder.c new file mode 100644 index 000000000..e278a9c89 --- /dev/null +++ b/drivers/gpu/drm/tidss/tidss_encoder.c @@ -0,0 +1,96 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ + * Author: Tomi Valkeinen + */ + +#include + +#include +#include +#include +#include + +#include "tidss_crtc.h" +#include "tidss_drv.h" +#include "tidss_encoder.h" + +static int tidss_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_device *ddev = encoder->dev; + struct tidss_crtc_state *tcrtc_state = to_tidss_crtc_state(crtc_state); + struct drm_display_info *di = &conn_state->connector->display_info; + struct drm_bridge *bridge; + bool bus_flags_set = false; + + dev_dbg(ddev->dev, "%s\n", __func__); + + /* + * Take the bus_flags from the first bridge that defines + * bridge timings, or from the connector's display_info if no + * bridge defines the timings. + */ + drm_for_each_bridge_in_chain(encoder, bridge) { + if (!bridge->timings) + continue; + + tcrtc_state->bus_flags = bridge->timings->input_bus_flags; + bus_flags_set = true; + break; + } + + if (!di->bus_formats || di->num_bus_formats == 0) { + dev_err(ddev->dev, "%s: No bus_formats in connected display\n", + __func__); + return -EINVAL; + } + + // XXX any cleaner way to set bus format and flags? + tcrtc_state->bus_format = di->bus_formats[0]; + if (!bus_flags_set) + tcrtc_state->bus_flags = di->bus_flags; + + return 0; +} + +static void tidss_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); + kfree(encoder); +} + +static const struct drm_encoder_helper_funcs encoder_helper_funcs = { + .atomic_check = tidss_encoder_atomic_check, +}; + +static const struct drm_encoder_funcs encoder_funcs = { + .destroy = tidss_encoder_destroy, +}; + +struct drm_encoder *tidss_encoder_create(struct tidss_device *tidss, + u32 encoder_type, u32 possible_crtcs) +{ + struct drm_encoder *enc; + int ret; + + enc = kzalloc(sizeof(*enc), GFP_KERNEL); + if (!enc) + return ERR_PTR(-ENOMEM); + + enc->possible_crtcs = possible_crtcs; + + ret = drm_encoder_init(&tidss->ddev, enc, &encoder_funcs, + encoder_type, NULL); + if (ret < 0) { + kfree(enc); + return ERR_PTR(ret); + } + + drm_encoder_helper_add(enc, &encoder_helper_funcs); + + dev_dbg(tidss->dev, "Encoder create done\n"); + + return enc; +} -- cgit v1.2.3