Lines Matching +full:dual +full:- +full:mode
1 // SPDX-License-Identifier: GPL-2.0+
3 * i.MX drm driver - LVDS display bridge
11 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
31 #include "imx-drm.h"
33 #define DRIVER_NAME "imx-ldb"
65 struct drm_display_mode mode; member
102 struct imx_ldb *ldb = imx_ldb_ch->ldb; in imx_ldb_ch_set_bus_format()
103 int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN; in imx_ldb_ch_set_bus_format() local
109 if (imx_ldb_ch->chno == 0 || dual) in imx_ldb_ch_set_bus_format()
110 ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24; in imx_ldb_ch_set_bus_format()
111 if (imx_ldb_ch->chno == 1 || dual) in imx_ldb_ch_set_bus_format()
112 ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24; in imx_ldb_ch_set_bus_format()
115 if (imx_ldb_ch->chno == 0 || dual) in imx_ldb_ch_set_bus_format()
116 ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 | in imx_ldb_ch_set_bus_format()
118 if (imx_ldb_ch->chno == 1 || dual) in imx_ldb_ch_set_bus_format()
119 ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 | in imx_ldb_ch_set_bus_format()
130 num_modes = drm_panel_get_modes(imx_ldb_ch->panel, connector); in imx_ldb_connector_get_modes()
134 if (!imx_ldb_ch->edid && imx_ldb_ch->ddc) in imx_ldb_connector_get_modes()
135 imx_ldb_ch->edid = drm_get_edid(connector, imx_ldb_ch->ddc); in imx_ldb_connector_get_modes()
137 if (imx_ldb_ch->edid) { in imx_ldb_connector_get_modes()
139 imx_ldb_ch->edid); in imx_ldb_connector_get_modes()
140 num_modes = drm_add_edid_modes(connector, imx_ldb_ch->edid); in imx_ldb_connector_get_modes()
143 if (imx_ldb_ch->mode_valid) { in imx_ldb_connector_get_modes()
144 struct drm_display_mode *mode; in imx_ldb_connector_get_modes() local
146 mode = drm_mode_create(connector->dev); in imx_ldb_connector_get_modes()
147 if (!mode) in imx_ldb_connector_get_modes()
148 return -EINVAL; in imx_ldb_connector_get_modes()
149 drm_mode_copy(mode, &imx_ldb_ch->mode); in imx_ldb_connector_get_modes()
150 mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; in imx_ldb_connector_get_modes()
151 drm_mode_probed_add(connector, mode); in imx_ldb_connector_get_modes()
163 dev_dbg(ldb->dev, "%s: now: %ld want: %ld\n", __func__, in imx_ldb_set_clock()
164 clk_get_rate(ldb->clk_pll[chno]), serial_clk); in imx_ldb_set_clock()
165 clk_set_rate(ldb->clk_pll[chno], serial_clk); in imx_ldb_set_clock()
167 dev_dbg(ldb->dev, "%s after: %ld\n", __func__, in imx_ldb_set_clock()
168 clk_get_rate(ldb->clk_pll[chno])); in imx_ldb_set_clock()
170 dev_dbg(ldb->dev, "%s: now: %ld want: %ld\n", __func__, in imx_ldb_set_clock()
171 clk_get_rate(ldb->clk[chno]), in imx_ldb_set_clock()
173 clk_set_rate(ldb->clk[chno], di_clk); in imx_ldb_set_clock()
175 dev_dbg(ldb->dev, "%s after: %ld\n", __func__, in imx_ldb_set_clock()
176 clk_get_rate(ldb->clk[chno])); in imx_ldb_set_clock()
179 ret = clk_set_parent(ldb->clk_sel[mux], ldb->clk[chno]); in imx_ldb_set_clock()
181 dev_err(ldb->dev, in imx_ldb_set_clock()
189 struct imx_ldb *ldb = imx_ldb_ch->ldb; in imx_ldb_encoder_enable()
190 int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN; in imx_ldb_encoder_enable() local
191 int mux = drm_of_encoder_active_port_id(imx_ldb_ch->child, encoder); in imx_ldb_encoder_enable()
193 if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) { in imx_ldb_encoder_enable()
194 dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux); in imx_ldb_encoder_enable()
198 drm_panel_prepare(imx_ldb_ch->panel); in imx_ldb_encoder_enable()
200 if (dual) { in imx_ldb_encoder_enable()
201 clk_set_parent(ldb->clk_sel[mux], ldb->clk[0]); in imx_ldb_encoder_enable()
202 clk_set_parent(ldb->clk_sel[mux], ldb->clk[1]); in imx_ldb_encoder_enable()
204 clk_prepare_enable(ldb->clk[0]); in imx_ldb_encoder_enable()
205 clk_prepare_enable(ldb->clk[1]); in imx_ldb_encoder_enable()
207 clk_set_parent(ldb->clk_sel[mux], ldb->clk[imx_ldb_ch->chno]); in imx_ldb_encoder_enable()
210 if (imx_ldb_ch == &ldb->channel[0] || dual) { in imx_ldb_encoder_enable()
211 ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK; in imx_ldb_encoder_enable()
212 if (mux == 0 || ldb->lvds_mux) in imx_ldb_encoder_enable()
213 ldb->ldb_ctrl |= LDB_CH0_MODE_EN_TO_DI0; in imx_ldb_encoder_enable()
215 ldb->ldb_ctrl |= LDB_CH0_MODE_EN_TO_DI1; in imx_ldb_encoder_enable()
217 if (imx_ldb_ch == &ldb->channel[1] || dual) { in imx_ldb_encoder_enable()
218 ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK; in imx_ldb_encoder_enable()
219 if (mux == 1 || ldb->lvds_mux) in imx_ldb_encoder_enable()
220 ldb->ldb_ctrl |= LDB_CH1_MODE_EN_TO_DI1; in imx_ldb_encoder_enable()
222 ldb->ldb_ctrl |= LDB_CH1_MODE_EN_TO_DI0; in imx_ldb_encoder_enable()
225 if (ldb->lvds_mux) { in imx_ldb_encoder_enable()
228 if (imx_ldb_ch == &ldb->channel[0]) in imx_ldb_encoder_enable()
229 lvds_mux = &ldb->lvds_mux[0]; in imx_ldb_encoder_enable()
230 else if (imx_ldb_ch == &ldb->channel[1]) in imx_ldb_encoder_enable()
231 lvds_mux = &ldb->lvds_mux[1]; in imx_ldb_encoder_enable()
233 regmap_update_bits(ldb->regmap, lvds_mux->reg, lvds_mux->mask, in imx_ldb_encoder_enable()
234 mux << lvds_mux->shift); in imx_ldb_encoder_enable()
237 regmap_write(ldb->regmap, IOMUXC_GPR2, ldb->ldb_ctrl); in imx_ldb_encoder_enable()
239 drm_panel_enable(imx_ldb_ch->panel); in imx_ldb_encoder_enable()
248 struct drm_display_mode *mode = &crtc_state->adjusted_mode; in imx_ldb_encoder_atomic_mode_set() local
249 struct imx_ldb *ldb = imx_ldb_ch->ldb; in imx_ldb_encoder_atomic_mode_set()
250 int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN; in imx_ldb_encoder_atomic_mode_set() local
252 unsigned long di_clk = mode->clock * 1000; in imx_ldb_encoder_atomic_mode_set()
253 int mux = drm_of_encoder_active_port_id(imx_ldb_ch->child, encoder); in imx_ldb_encoder_atomic_mode_set()
254 u32 bus_format = imx_ldb_ch->bus_format; in imx_ldb_encoder_atomic_mode_set()
256 if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) { in imx_ldb_encoder_atomic_mode_set()
257 dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux); in imx_ldb_encoder_atomic_mode_set()
261 if (mode->clock > 170000) { in imx_ldb_encoder_atomic_mode_set()
262 dev_warn(ldb->dev, in imx_ldb_encoder_atomic_mode_set()
263 "%s: mode exceeds 170 MHz pixel clock\n", __func__); in imx_ldb_encoder_atomic_mode_set()
265 if (mode->clock > 85000 && !dual) { in imx_ldb_encoder_atomic_mode_set()
266 dev_warn(ldb->dev, in imx_ldb_encoder_atomic_mode_set()
267 "%s: mode exceeds 85 MHz pixel clock\n", __func__); in imx_ldb_encoder_atomic_mode_set()
270 if (dual) { in imx_ldb_encoder_atomic_mode_set()
271 serial_clk = 3500UL * mode->clock; in imx_ldb_encoder_atomic_mode_set()
275 serial_clk = 7000UL * mode->clock; in imx_ldb_encoder_atomic_mode_set()
276 imx_ldb_set_clock(ldb, mux, imx_ldb_ch->chno, serial_clk, in imx_ldb_encoder_atomic_mode_set()
280 /* FIXME - assumes straight connections DI0 --> CH0, DI1 --> CH1 */ in imx_ldb_encoder_atomic_mode_set()
281 if (imx_ldb_ch == &ldb->channel[0] || dual) { in imx_ldb_encoder_atomic_mode_set()
282 if (mode->flags & DRM_MODE_FLAG_NVSYNC) in imx_ldb_encoder_atomic_mode_set()
283 ldb->ldb_ctrl |= LDB_DI0_VS_POL_ACT_LOW; in imx_ldb_encoder_atomic_mode_set()
284 else if (mode->flags & DRM_MODE_FLAG_PVSYNC) in imx_ldb_encoder_atomic_mode_set()
285 ldb->ldb_ctrl &= ~LDB_DI0_VS_POL_ACT_LOW; in imx_ldb_encoder_atomic_mode_set()
287 if (imx_ldb_ch == &ldb->channel[1] || dual) { in imx_ldb_encoder_atomic_mode_set()
288 if (mode->flags & DRM_MODE_FLAG_NVSYNC) in imx_ldb_encoder_atomic_mode_set()
289 ldb->ldb_ctrl |= LDB_DI1_VS_POL_ACT_LOW; in imx_ldb_encoder_atomic_mode_set()
290 else if (mode->flags & DRM_MODE_FLAG_PVSYNC) in imx_ldb_encoder_atomic_mode_set()
291 ldb->ldb_ctrl &= ~LDB_DI1_VS_POL_ACT_LOW; in imx_ldb_encoder_atomic_mode_set()
295 struct drm_connector *connector = connector_state->connector; in imx_ldb_encoder_atomic_mode_set()
296 struct drm_display_info *di = &connector->display_info; in imx_ldb_encoder_atomic_mode_set()
298 if (di->num_bus_formats) in imx_ldb_encoder_atomic_mode_set()
299 bus_format = di->bus_formats[0]; in imx_ldb_encoder_atomic_mode_set()
307 struct imx_ldb *ldb = imx_ldb_ch->ldb; in imx_ldb_encoder_disable()
308 int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN; in imx_ldb_encoder_disable() local
311 drm_panel_disable(imx_ldb_ch->panel); in imx_ldb_encoder_disable()
313 if (imx_ldb_ch == &ldb->channel[0] || dual) in imx_ldb_encoder_disable()
314 ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK; in imx_ldb_encoder_disable()
315 if (imx_ldb_ch == &ldb->channel[1] || dual) in imx_ldb_encoder_disable()
316 ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK; in imx_ldb_encoder_disable()
318 regmap_write(ldb->regmap, IOMUXC_GPR2, ldb->ldb_ctrl); in imx_ldb_encoder_disable()
320 if (dual) { in imx_ldb_encoder_disable()
321 clk_disable_unprepare(ldb->clk[0]); in imx_ldb_encoder_disable()
322 clk_disable_unprepare(ldb->clk[1]); in imx_ldb_encoder_disable()
325 if (ldb->lvds_mux) { in imx_ldb_encoder_disable()
328 if (imx_ldb_ch == &ldb->channel[0]) in imx_ldb_encoder_disable()
329 lvds_mux = &ldb->lvds_mux[0]; in imx_ldb_encoder_disable()
330 else if (imx_ldb_ch == &ldb->channel[1]) in imx_ldb_encoder_disable()
331 lvds_mux = &ldb->lvds_mux[1]; in imx_ldb_encoder_disable()
333 regmap_read(ldb->regmap, lvds_mux->reg, &mux); in imx_ldb_encoder_disable()
334 mux &= lvds_mux->mask; in imx_ldb_encoder_disable()
335 mux >>= lvds_mux->shift; in imx_ldb_encoder_disable()
337 mux = (imx_ldb_ch == &ldb->channel[0]) ? 0 : 1; in imx_ldb_encoder_disable()
341 ret = clk_set_parent(ldb->clk_sel[mux], ldb->clk_parent[mux]); in imx_ldb_encoder_disable()
343 dev_err(ldb->dev, in imx_ldb_encoder_disable()
347 drm_panel_unprepare(imx_ldb_ch->panel); in imx_ldb_encoder_disable()
356 struct drm_display_info *di = &conn_state->connector->display_info; in imx_ldb_encoder_atomic_check()
357 u32 bus_format = imx_ldb_ch->bus_format; in imx_ldb_encoder_atomic_check()
360 if (!bus_format && di->num_bus_formats) { in imx_ldb_encoder_atomic_check()
361 bus_format = di->bus_formats[0]; in imx_ldb_encoder_atomic_check()
362 imx_crtc_state->bus_flags = di->bus_flags; in imx_ldb_encoder_atomic_check()
364 bus_format = imx_ldb_ch->bus_format; in imx_ldb_encoder_atomic_check()
365 imx_crtc_state->bus_flags = imx_ldb_ch->bus_flags; in imx_ldb_encoder_atomic_check()
369 imx_crtc_state->bus_format = MEDIA_BUS_FMT_RGB666_1X18; in imx_ldb_encoder_atomic_check()
373 imx_crtc_state->bus_format = MEDIA_BUS_FMT_RGB888_1X24; in imx_ldb_encoder_atomic_check()
376 return -EINVAL; in imx_ldb_encoder_atomic_check()
379 imx_crtc_state->di_hsync_pin = 2; in imx_ldb_encoder_atomic_check()
380 imx_crtc_state->di_vsync_pin = 3; in imx_ldb_encoder_atomic_check()
410 ldb->clk[chno] = devm_clk_get(ldb->dev, clkname); in imx_ldb_get_clk()
411 if (IS_ERR(ldb->clk[chno])) in imx_ldb_get_clk()
412 return PTR_ERR(ldb->clk[chno]); in imx_ldb_get_clk()
415 ldb->clk_pll[chno] = devm_clk_get(ldb->dev, clkname); in imx_ldb_get_clk()
417 return PTR_ERR_OR_ZERO(ldb->clk_pll[chno]); in imx_ldb_get_clk()
423 struct imx_ldb *ldb = imx_ldb_ch->ldb; in imx_ldb_register()
424 struct drm_encoder *encoder = &imx_ldb_ch->encoder; in imx_ldb_register()
427 ret = imx_drm_encoder_parse_of(drm, encoder, imx_ldb_ch->child); in imx_ldb_register()
431 ret = imx_ldb_get_clk(ldb, imx_ldb_ch->chno); in imx_ldb_register()
435 if (ldb->ldb_ctrl & LDB_SPLIT_MODE_EN) { in imx_ldb_register()
444 if (imx_ldb_ch->bridge) { in imx_ldb_register()
445 ret = drm_bridge_attach(&imx_ldb_ch->encoder, in imx_ldb_register()
446 imx_ldb_ch->bridge, NULL, 0); in imx_ldb_register()
458 drm_connector_helper_add(&imx_ldb_ch->connector, in imx_ldb_register()
460 drm_connector_init_with_ddc(drm, &imx_ldb_ch->connector, in imx_ldb_register()
463 imx_ldb_ch->ddc); in imx_ldb_register()
464 drm_connector_attach_encoder(&imx_ldb_ch->connector, encoder); in imx_ldb_register()
488 ret = of_property_read_string(np, "fsl,data-mapping", &bm); in of_get_bus_format()
492 of_property_read_u32(np, "fsl,data-width", &datawidth); in of_get_bus_format()
500 dev_err(dev, "invalid data mapping: %d-bit \"%s\"\n", datawidth, bm); in of_get_bus_format()
502 return -ENOENT; in of_get_bus_format()
518 * For a device declaring compatible = "fsl,imx6q-ldb", "fsl,imx53-ldb",
521 * entries (in this case fsl,imx53-ldb) need to be ordered last.
524 { .compatible = "fsl,imx6q-ldb", .data = imx6q_lvds_mux, },
525 { .compatible = "fsl,imx53-ldb", .data = NULL, },
537 ddc_node = of_parse_phandle(child, "ddc-i2c-bus", 0); in imx_ldb_panel_ddc()
539 channel->ddc = of_find_i2c_adapter_by_node(ddc_node); in imx_ldb_panel_ddc()
541 if (!channel->ddc) { in imx_ldb_panel_ddc()
543 return -EPROBE_DEFER; in imx_ldb_panel_ddc()
547 if (!channel->ddc) { in imx_ldb_panel_ddc()
555 channel->edid = kmemdup(edidp, edid_len, GFP_KERNEL); in imx_ldb_panel_ddc()
556 if (!channel->edid) in imx_ldb_panel_ddc()
557 return -ENOMEM; in imx_ldb_panel_ddc()
558 } else if (!channel->panel) { in imx_ldb_panel_ddc()
559 /* fallback to display-timings node */ in imx_ldb_panel_ddc()
561 &channel->mode, in imx_ldb_panel_ddc()
562 &channel->bus_flags, in imx_ldb_panel_ddc()
565 channel->mode_valid = 1; in imx_ldb_panel_ddc()
574 struct device_node *np = dev->of_node; in imx_ldb_bind()
579 int dual; in imx_ldb_bind() local
586 imx_ldb->regmap = syscon_regmap_lookup_by_phandle(np, "gpr"); in imx_ldb_bind()
587 if (IS_ERR(imx_ldb->regmap)) { in imx_ldb_bind()
589 return PTR_ERR(imx_ldb->regmap); in imx_ldb_bind()
593 regmap_write(imx_ldb->regmap, IOMUXC_GPR2, 0); in imx_ldb_bind()
595 imx_ldb->dev = dev; in imx_ldb_bind()
598 imx_ldb->lvds_mux = of_id->data; in imx_ldb_bind()
600 dual = of_property_read_bool(np, "fsl,dual-channel"); in imx_ldb_bind()
601 if (dual) in imx_ldb_bind()
602 imx_ldb->ldb_ctrl |= LDB_SPLIT_MODE_EN; in imx_ldb_bind()
615 imx_ldb->clk_sel[i] = devm_clk_get(imx_ldb->dev, clkname); in imx_ldb_bind()
616 if (IS_ERR(imx_ldb->clk_sel[i])) { in imx_ldb_bind()
617 ret = PTR_ERR(imx_ldb->clk_sel[i]); in imx_ldb_bind()
618 imx_ldb->clk_sel[i] = NULL; in imx_ldb_bind()
622 imx_ldb->clk_parent[i] = clk_get_parent(imx_ldb->clk_sel[i]); in imx_ldb_bind()
633 ret = -EINVAL; in imx_ldb_bind()
640 if (dual && i > 0) { in imx_ldb_bind()
641 dev_warn(dev, "dual-channel mode, ignoring second output\n"); in imx_ldb_bind()
645 channel = &imx_ldb->channel[i]; in imx_ldb_bind()
646 channel->ldb = imx_ldb; in imx_ldb_bind()
647 channel->chno = i; in imx_ldb_bind()
650 * The output port is port@4 with an external 4-port mux or in imx_ldb_bind()
651 * port@2 with the internal 2-port mux. in imx_ldb_bind()
654 imx_ldb->lvds_mux ? 4 : 2, 0, in imx_ldb_bind()
655 &channel->panel, &channel->bridge); in imx_ldb_bind()
656 if (ret && ret != -ENODEV) in imx_ldb_bind()
660 if (!channel->bridge) { in imx_ldb_bind()
667 if (bus_format == -EINVAL) { in imx_ldb_bind()
672 if (channel->panel && channel->panel->funcs && in imx_ldb_bind()
673 channel->panel->funcs->get_modes) in imx_ldb_bind()
682 channel->bus_format = bus_format; in imx_ldb_bind()
683 channel->child = child; in imx_ldb_bind()
687 channel->child = NULL; in imx_ldb_bind()
706 struct imx_ldb_channel *channel = &imx_ldb->channel[i]; in imx_ldb_unbind()
708 kfree(channel->edid); in imx_ldb_unbind()
709 i2c_put_adapter(channel->ddc); in imx_ldb_unbind()
722 imx_ldb = devm_kzalloc(&pdev->dev, sizeof(*imx_ldb), GFP_KERNEL); in imx_ldb_probe()
724 return -ENOMEM; in imx_ldb_probe()
728 return component_add(&pdev->dev, &imx_ldb_ops); in imx_ldb_probe()
733 component_del(&pdev->dev, &imx_ldb_ops); in imx_ldb_remove()