18  * DOC: VC4 DPI module
20  * The VC4 DPI hardware supports MIPI DPI type 4 and Nokia ViSSI
94 /* General DPI hardware state. */
106 #define DPI_READ(offset) readl(dpi->regs + (offset))
107 #define DPI_WRITE(offset, val) writel(val, dpi->regs + (offset))
109 /* VC4 DPI encoder KMS struct */
112 	struct vc4_dpi *dpi;  member
136 	struct vc4_dpi *dpi = vc4->dpi;  in vc4_dpi_debugfs_regs()  local
139 	if (!dpi)  in vc4_dpi_debugfs_regs()
159 	struct vc4_dpi *dpi = vc4_encoder->dpi;  in vc4_dpi_encoder_disable()  local
161 	clk_disable_unprepare(dpi->pixel_clock);  in vc4_dpi_encoder_disable()
169 	struct vc4_dpi *dpi = vc4_encoder->dpi;  in vc4_dpi_encoder_enable()  local
175 	/* Look up the connector attached to DPI so we can get the  in vc4_dpi_encoder_enable()
235 	ret = clk_set_rate(dpi->pixel_clock, mode->clock * 1000);  in vc4_dpi_encoder_enable()
239 	ret = clk_prepare_enable(dpi->pixel_clock);  in vc4_dpi_encoder_enable()
260 	{ .compatible = "brcm,bcm2835-dpi", .data = NULL },
267 static int vc4_dpi_init_bridge(struct vc4_dpi *dpi)  in vc4_dpi_init_bridge()  argument
269 	struct device *dev = &dpi->pdev->dev;  in vc4_dpi_init_bridge()
289 	return drm_bridge_attach(dpi->encoder, bridge, NULL);  in vc4_dpi_init_bridge()
297 	struct vc4_dpi *dpi;  in vc4_dpi_bind()  local
301 	dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);  in vc4_dpi_bind()
302 	if (!dpi)  in vc4_dpi_bind()
310 	vc4_dpi_encoder->dpi = dpi;  in vc4_dpi_bind()
311 	dpi->encoder = &vc4_dpi_encoder->base.base;  in vc4_dpi_bind()
313 	dpi->pdev = pdev;  in vc4_dpi_bind()
314 	dpi->regs = vc4_ioremap_regs(pdev, 0);  in vc4_dpi_bind()
315 	if (IS_ERR(dpi->regs))  in vc4_dpi_bind()
316 		return PTR_ERR(dpi->regs);  in vc4_dpi_bind()
324 	dpi->core_clock = devm_clk_get(dev, "core");  in vc4_dpi_bind()
325 	if (IS_ERR(dpi->core_clock)) {  in vc4_dpi_bind()
326 		ret = PTR_ERR(dpi->core_clock);  in vc4_dpi_bind()
331 	dpi->pixel_clock = devm_clk_get(dev, "pixel");  in vc4_dpi_bind()
332 	if (IS_ERR(dpi->pixel_clock)) {  in vc4_dpi_bind()
333 		ret = PTR_ERR(dpi->pixel_clock);  in vc4_dpi_bind()
339 	ret = clk_prepare_enable(dpi->core_clock);  in vc4_dpi_bind()
343 	drm_encoder_init(drm, dpi->encoder, &vc4_dpi_encoder_funcs,  in vc4_dpi_bind()
345 	drm_encoder_helper_add(dpi->encoder, &vc4_dpi_encoder_helper_funcs);  in vc4_dpi_bind()
347 	ret = vc4_dpi_init_bridge(dpi);  in vc4_dpi_bind()
351 	dev_set_drvdata(dev, dpi);  in vc4_dpi_bind()
353 	vc4->dpi = dpi;  in vc4_dpi_bind()
358 	drm_encoder_cleanup(dpi->encoder);  in vc4_dpi_bind()
359 	clk_disable_unprepare(dpi->core_clock);  in vc4_dpi_bind()
368 	struct vc4_dpi *dpi = dev_get_drvdata(dev);  in vc4_dpi_unbind()  local
372 	drm_encoder_cleanup(dpi->encoder);  in vc4_dpi_unbind()
374 	clk_disable_unprepare(dpi->core_clock);  in vc4_dpi_unbind()
376 	vc4->dpi = NULL;  in vc4_dpi_unbind()