7  * DOC: VC4 DPI module
9  * The VC4 DPI hardware supports MIPI DPI type 4 and Nokia ViSSI
86 /* General DPI hardware state. */
106 #define DPI_READ(offset) readl(dpi->regs + (offset))
107 #define DPI_WRITE(offset, val) writel(val, dpi->regs + (offset))
117 	struct vc4_dpi *dpi = to_vc4_dpi(encoder);  in vc4_dpi_encoder_disable()  local
123 	clk_disable_unprepare(dpi->pixel_clock);  in vc4_dpi_encoder_disable()
132 	struct vc4_dpi *dpi = to_vc4_dpi(encoder);  in vc4_dpi_encoder_enable()  local
139 	/* Look up the connector attached to DPI so we can get the  in vc4_dpi_encoder_enable()
221 	ret = clk_set_rate(dpi->pixel_clock, mode->clock * 1000);  in vc4_dpi_encoder_enable()
225 	ret = clk_prepare_enable(dpi->pixel_clock);  in vc4_dpi_encoder_enable()
250 	struct vc4_dpi *dpi = to_vc4_dpi(encoder);  in vc4_dpi_late_register()  local
253 	ret = vc4_debugfs_add_regset32(drm->primary, "dpi_regs", &dpi->regset);  in vc4_dpi_late_register()
265 	{ .compatible = "brcm,bcm2835-dpi", .data = NULL },
272 static int vc4_dpi_init_bridge(struct vc4_dpi *dpi)  in vc4_dpi_init_bridge()  argument
274 	struct drm_device *drm = dpi->encoder.base.dev;  in vc4_dpi_init_bridge()
275 	struct device *dev = &dpi->pdev->dev;  in vc4_dpi_init_bridge()
289 	return drm_bridge_attach(&dpi->encoder.base, bridge, NULL, 0);  in vc4_dpi_init_bridge()
294 	struct vc4_dpi *dpi = ptr;  in vc4_dpi_disable_clock()  local
296 	clk_disable_unprepare(dpi->core_clock);  in vc4_dpi_disable_clock()
303 	struct vc4_dpi *dpi;  in vc4_dpi_bind()  local
306 	dpi = drmm_kzalloc(drm, sizeof(*dpi), GFP_KERNEL);  in vc4_dpi_bind()
307 	if (!dpi)  in vc4_dpi_bind()
310 	dpi->encoder.type = VC4_ENCODER_TYPE_DPI;  in vc4_dpi_bind()
311 	dpi->pdev = pdev;  in vc4_dpi_bind()
312 	dpi->regs = vc4_ioremap_regs(pdev, 0);  in vc4_dpi_bind()
313 	if (IS_ERR(dpi->regs))  in vc4_dpi_bind()
314 		return PTR_ERR(dpi->regs);  in vc4_dpi_bind()
315 	dpi->regset.base = dpi->regs;  in vc4_dpi_bind()
316 	dpi->regset.regs = dpi_regs;  in vc4_dpi_bind()
317 	dpi->regset.nregs = ARRAY_SIZE(dpi_regs);  in vc4_dpi_bind()
325 	dpi->core_clock = devm_clk_get(dev, "core");  in vc4_dpi_bind()
326 	if (IS_ERR(dpi->core_clock)) {  in vc4_dpi_bind()
327 		ret = PTR_ERR(dpi->core_clock);  in vc4_dpi_bind()
333 	dpi->pixel_clock = devm_clk_get(dev, "pixel");  in vc4_dpi_bind()
334 	if (IS_ERR(dpi->pixel_clock)) {  in vc4_dpi_bind()
335 		ret = PTR_ERR(dpi->pixel_clock);  in vc4_dpi_bind()
341 	ret = clk_prepare_enable(dpi->core_clock);  in vc4_dpi_bind()
347 	ret = devm_add_action_or_reset(dev, vc4_dpi_disable_clock, dpi);  in vc4_dpi_bind()
351 	ret = drmm_encoder_init(drm, &dpi->encoder.base,  in vc4_dpi_bind()
358 	drm_encoder_helper_add(&dpi->encoder.base, &vc4_dpi_encoder_helper_funcs);  in vc4_dpi_bind()
360 	ret = vc4_dpi_init_bridge(dpi);  in vc4_dpi_bind()
364 	dev_set_drvdata(dev, dpi);  in vc4_dpi_bind()