1 // SPDX-License-Identifier: GPL-2.0+
18  * Display pipe 0 is attached with a built-in transparent VGA encoder and
19  * a built-in HDMI encoder.
20  * Display pipe 1 has only one built-in HDMI encoder connected.
22  *      |             +-----+  |                        |             |
23  *      | CRTC0 -+--> | VGA |  ----> VGA Connector ---> | VGA Monitor |<---+
24  *      |        |    +-----+  |                        |_____________|    |
26  *      |        |    +------+ |                        |              |   |
27  *      |        +--> | HDMI | ----> HDMI Connector --> | HDMI Monitor |<--+
28  *      |             +------+ |                        |______________|   |
29  *      |            +------+  |                                           |
30  *      |            | i2c6 |  <-------------------------------------------+
31  *      |            +------+  |
35  *      |            +------+  |
36  *      |            | i2c7 |  <--------------------------------+
37  *      |            +------+  |                                |
39  *      |            +------+  |                         |              |
40  *      | CRTC1 ---> | HDMI |  ----> HDMI Connector ---> | HDMI Monitor |
41  *      |            +------+  |                         |______________|
45 static int ls7a2000_connector_get_modes(struct drm_connector *connector)  in ls7a2000_connector_get_modes()  argument
49 	if (connector->ddc) {  in ls7a2000_connector_get_modes()
52 		drm_edid = drm_edid_read(connector);  in ls7a2000_connector_get_modes()
53 		drm_edid_connector_update(connector, drm_edid);  in ls7a2000_connector_get_modes()
54 		num = drm_edid_connector_add_modes(connector);  in ls7a2000_connector_get_modes()
60 	num = drm_add_modes_noedid(connector, 1920, 1200);  in ls7a2000_connector_get_modes()
62 	drm_set_preferred_mode(connector, 1024, 768);  in ls7a2000_connector_get_modes()
68 ls7a2000_connector_get_best_encoder(struct drm_connector *connector,  in ls7a2000_connector_get_best_encoder()  argument
71 	struct lsdc_output *output = connector_to_lsdc_output(connector);  in ls7a2000_connector_get_best_encoder()
73 	return &output->encoder;  in ls7a2000_connector_get_best_encoder()
114 	struct drm_info_node *node = (struct drm_info_node *)m->private;  in ls7a2000_hdmi_encoder_regs_show()
115 	struct drm_device *ddev = node->minor->dev;  in ls7a2000_hdmi_encoder_regs_show()
119 	preg = (const struct lsdc_reg32 *)node->info_ent->data;  in ls7a2000_hdmi_encoder_regs_show()
121 	while (preg->name) {  in ls7a2000_hdmi_encoder_regs_show()
122 		u32 offset = preg->offset;  in ls7a2000_hdmi_encoder_regs_show()
125 			   preg->name, offset, lsdc_rreg32(ldev, offset));  in ls7a2000_hdmi_encoder_regs_show()
140 static void ls7a2000_hdmi0_late_register(struct drm_connector *connector,  in ls7a2000_hdmi0_late_register()  argument
143 	struct drm_device *ddev = connector->dev;  in ls7a2000_hdmi0_late_register()
144 	struct drm_minor *minor = ddev->primary;  in ls7a2000_hdmi0_late_register()
151 static void ls7a2000_hdmi1_late_register(struct drm_connector *connector,  in ls7a2000_hdmi1_late_register()  argument
154 	struct drm_device *ddev = connector->dev;  in ls7a2000_hdmi1_late_register()
155 	struct drm_minor *minor = ddev->primary;  in ls7a2000_hdmi1_late_register()
165 ls7a2000_hdmi0_vga_connector_detect(struct drm_connector *connector, bool force)  in ls7a2000_hdmi0_vga_connector_detect()  argument
167 	struct drm_device *ddev = connector->dev;  in ls7a2000_hdmi0_vga_connector_detect()
176 	if (connector->ddc) {  in ls7a2000_hdmi0_vga_connector_detect()
177 		if (drm_probe_ddc(connector->ddc))  in ls7a2000_hdmi0_vga_connector_detect()
187 ls7a2000_hdmi1_connector_detect(struct drm_connector *connector, bool force)  in ls7a2000_hdmi1_connector_detect()  argument
189 	struct lsdc_device *ldev = to_lsdc(connector->dev);  in ls7a2000_hdmi1_connector_detect()
221 /* Even though some board has only one hdmi on display pipe 1,
229 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi0_encoder_reset()
241 	/* help the hdmi phy to get out of reset state */  in ls7a2000_hdmi0_encoder_reset()
246 	drm_dbg(ddev, "HDMI-0 Reset\n");  in ls7a2000_hdmi0_encoder_reset()
251 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi1_encoder_reset()
263 	/*  help the hdmi phy to get out of reset state */  in ls7a2000_hdmi1_encoder_reset()
268 	drm_dbg(ddev, "HDMI-1 Reset\n");  in ls7a2000_hdmi1_encoder_reset()
287 	unsigned int index = dispipe->index;  in ls7a2000_hdmi_set_avi_infoframe()
288 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi_set_avi_infoframe()
297 						       &output->connector,  in ls7a2000_hdmi_set_avi_infoframe()
328 	drm_dbg(ddev, "Update HDMI-%u avi infoframe\n", index);  in ls7a2000_hdmi_set_avi_infoframe()
338 	unsigned int index = dispipe->index;  in ls7a2000_hdmi_atomic_disable()
339 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi_atomic_disable()
343 	/* Disable the hdmi phy */  in ls7a2000_hdmi_atomic_disable()
348 	/* Disable the hdmi interface */  in ls7a2000_hdmi_atomic_disable()
353 	drm_dbg(ddev, "HDMI-%u disabled\n", index);  in ls7a2000_hdmi_atomic_disable()
359 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi_atomic_enable()
363 	unsigned int index = dispipe->index;  in ls7a2000_hdmi_atomic_enable()
390 	drm_dbg(ddev, "HDMI-%u enabled\n", index);  in ls7a2000_hdmi_atomic_enable()
403  *  +--------------------------------------------------------+
405  *  |-------------------+----+-----+----+-----+--------------|
411  *  +--------------------------------------------------------+
417 	struct drm_device *ddev = &ldev->base;  in ls7a2000_hdmi_phy_pll_config()
425 	 * Most of time, loongson HDMI require M = 10  in ls7a2000_hdmi_phy_pll_config()
459 	drm_dbg(ddev, "Fin of HDMI-%u: %d kHz\n", index, fin);  in ls7a2000_hdmi_phy_pll_config()
461 	/* Wait hdmi phy pll lock */  in ls7a2000_hdmi_phy_pll_config()
466 			drm_dbg(ddev, "Setting HDMI-%u PLL take %d cycles\n",  in ls7a2000_hdmi_phy_pll_config()
476 		drm_err(ddev, "Setting HDMI-%u PLL failed\n", index);  in ls7a2000_hdmi_phy_pll_config()
485 	unsigned int index = dispipe->index;  in ls7a2000_hdmi_atomic_mode_set()
486 	struct drm_device *ddev = encoder->dev;  in ls7a2000_hdmi_atomic_mode_set()
488 	struct drm_display_mode *mode = &crtc_state->mode;  in ls7a2000_hdmi_atomic_mode_set()
490 	ls7a2000_hdmi_phy_pll_config(ldev, mode->clock, index);  in ls7a2000_hdmi_atomic_mode_set()
494 	drm_dbg(ddev, "%s modeset finished\n", encoder->name);  in ls7a2000_hdmi_atomic_mode_set()
506  * 1) Most of board export one vga + hdmi output interface.
507  * 2) Yet, Some boards export double hdmi output interface.
508  * 3) Still have boards export three output(2 hdmi + 1 vga).
510  * So let's hook hdmi helper funcs to all display pipe, don't miss.
511  * writing hdmi register do no harms.
518 	struct lsdc_output *output = &dispipe->output;  in ls7a2000_output_init()
519 	struct drm_encoder *encoder = &output->encoder;  in ls7a2000_output_init()
520 	struct drm_connector *connector = &output->connector;  in ls7a2000_output_init()  local
524 			       DRM_MODE_ENCODER_TMDS, "encoder-%u", pipe);  in ls7a2000_output_init()
528 	encoder->possible_crtcs = BIT(pipe);  in ls7a2000_output_init()
532 	ret = drm_connector_init_with_ddc(ddev, connector,  in ls7a2000_output_init()
538 	drm_info(ddev, "display pipe-%u has HDMI %s\n", pipe, pipe ? "" : "and/or VGA");  in ls7a2000_output_init()
540 	drm_connector_helper_add(connector, &ls7a2000_connector_helpers);  in ls7a2000_output_init()
542 	drm_connector_attach_encoder(connector, encoder);  in ls7a2000_output_init()
544 	connector->polled = DRM_CONNECTOR_POLL_CONNECT |  in ls7a2000_output_init()
547 	connector->interlace_allowed = 0;  in ls7a2000_output_init()
548 	connector->doublescan_allowed = 0;  in ls7a2000_output_init()