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path: root/drivers/gpu/drm/rcar-du/rcar_du_drv.c
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Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_drv.c')
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_drv.c725
1 files changed, 725 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
new file mode 100644
index 000000000..bd7003d6e
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -0,0 +1,725 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * R-Car Display Unit DRM driver
+ *
+ * Copyright (C) 2013-2015 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_probe_helper.h>
+
+#include "rcar_du_drv.h"
+#include "rcar_du_kms.h"
+
+/* -----------------------------------------------------------------------------
+ * Device Information
+ */
+
+static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A774[34] has one RGB output and one LVDS output
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(1) | BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7745 has two RGB outputs
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ },
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A77470 has two RGB outputs, one LVDS output, and
+ * one (currently unsupported) analog video output
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0) | BIT(1),
+ .port = 2,
+ },
+ },
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rcar_du_r8a774a1_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(2) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A774A1 has one RGB output, one LVDS output and one HDMI
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 2,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a774b1_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(3) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A774B1 has one RGB output, one LVDS output and one HDMI
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 2,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a774c0_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A774C0 has one RGB output and two LVDS outputs
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0) | BIT(1),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS1] = {
+ .possible_crtcs = BIT(1),
+ .port = 2,
+ },
+ },
+ .num_lvds = 2,
+ .num_rpf = 4,
+ .lvds_clk_mask = BIT(1) | BIT(0),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a774e1_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(3) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A774E1 has one RGB output, one LVDS output and one HDMI
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 2,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7779_info = {
+ .gen = 1,
+ .features = RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7779 has two RGB outputs and one (currently unsupported)
+ * TCON output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1) | BIT(0),
+ .port = 1,
+ },
+ },
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7790_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .quirks = RCAR_DU_QUIRK_ALIGN_128B,
+ .channels_mask = BIT(2) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7742 and R8A7790 each have one RGB output and two LVDS
+ * outputs. Additionally R8A7790 supports one TCON output
+ * (currently unsupported by the driver).
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2) | BIT(1) | BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS1] = {
+ .possible_crtcs = BIT(2) | BIT(1),
+ .port = 2,
+ },
+ },
+ .num_lvds = 2,
+ .num_rpf = 4,
+};
+
+/* M2-W (r8a7791) and M2-N (r8a7793) are identical */
+static const struct rcar_du_device_info rcar_du_r8a7791_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A779[13] has one RGB output, one LVDS output and one
+ * (currently unsupported) TCON output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(1) | BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7792_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /* R8A7792 has two RGB outputs. */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ },
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7794_info = {
+ .gen = 2,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7794 has two RGB outputs and one (currently unsupported)
+ * TCON output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ },
+ .num_rpf = 4,
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7795_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(3) | BIT(2) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7795 has one RGB output, two HDMI outputs and one
+ * LVDS output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(3),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_HDMI1] = {
+ .possible_crtcs = BIT(2),
+ .port = 2,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 3,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(2) | BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7796_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(2) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A7796 has one RGB output, one LVDS output and one HDMI
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 2,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a77965_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(3) | BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A77965 has one RGB output, one LVDS output and one HDMI
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_HDMI0] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 2,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+ .dpll_mask = BIT(1),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a77970_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_INTERLACED
+ | RCAR_DU_FEATURE_TVM_SYNC,
+ .channels_mask = BIT(0),
+ .routes = {
+ /*
+ * R8A77970 and R8A77980 have one RGB output and one LVDS
+ * output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ },
+ .num_lvds = 1,
+ .num_rpf = 5,
+};
+
+static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_CRTC_CLOCK
+ | RCAR_DU_FEATURE_VSP1_SOURCE,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /*
+ * R8A77990 and R8A77995 have one RGB output and two LVDS
+ * outputs.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0) | BIT(1),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .port = 1,
+ },
+ [RCAR_DU_OUTPUT_LVDS1] = {
+ .possible_crtcs = BIT(1),
+ .port = 2,
+ },
+ },
+ .num_lvds = 2,
+ .num_rpf = 5,
+ .lvds_clk_mask = BIT(1) | BIT(0),
+};
+
+static const struct rcar_du_device_info rcar_du_r8a779a0_info = {
+ .gen = 3,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ
+ | RCAR_DU_FEATURE_VSP1_SOURCE
+ | RCAR_DU_FEATURE_NO_BLENDING,
+ .channels_mask = BIT(1) | BIT(0),
+ .routes = {
+ /* R8A779A0 has two MIPI DSI outputs. */
+ [RCAR_DU_OUTPUT_DSI0] = {
+ .possible_crtcs = BIT(0),
+ .port = 0,
+ },
+ [RCAR_DU_OUTPUT_DSI1] = {
+ .possible_crtcs = BIT(1),
+ .port = 1,
+ },
+ },
+ .num_rpf = 5,
+ .dsi_clk_mask = BIT(1) | BIT(0),
+};
+
+static const struct of_device_id rcar_du_of_table[] = {
+ { .compatible = "renesas,du-r8a7742", .data = &rcar_du_r8a7790_info },
+ { .compatible = "renesas,du-r8a7743", .data = &rzg1_du_r8a7743_info },
+ { .compatible = "renesas,du-r8a7744", .data = &rzg1_du_r8a7743_info },
+ { .compatible = "renesas,du-r8a7745", .data = &rzg1_du_r8a7745_info },
+ { .compatible = "renesas,du-r8a77470", .data = &rzg1_du_r8a77470_info },
+ { .compatible = "renesas,du-r8a774a1", .data = &rcar_du_r8a774a1_info },
+ { .compatible = "renesas,du-r8a774b1", .data = &rcar_du_r8a774b1_info },
+ { .compatible = "renesas,du-r8a774c0", .data = &rcar_du_r8a774c0_info },
+ { .compatible = "renesas,du-r8a774e1", .data = &rcar_du_r8a774e1_info },
+ { .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
+ { .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
+ { .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
+ { .compatible = "renesas,du-r8a7792", .data = &rcar_du_r8a7792_info },
+ { .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },
+ { .compatible = "renesas,du-r8a7794", .data = &rcar_du_r8a7794_info },
+ { .compatible = "renesas,du-r8a7795", .data = &rcar_du_r8a7795_info },
+ { .compatible = "renesas,du-r8a7796", .data = &rcar_du_r8a7796_info },
+ { .compatible = "renesas,du-r8a77961", .data = &rcar_du_r8a7796_info },
+ { .compatible = "renesas,du-r8a77965", .data = &rcar_du_r8a77965_info },
+ { .compatible = "renesas,du-r8a77970", .data = &rcar_du_r8a77970_info },
+ { .compatible = "renesas,du-r8a77980", .data = &rcar_du_r8a77970_info },
+ { .compatible = "renesas,du-r8a77990", .data = &rcar_du_r8a7799x_info },
+ { .compatible = "renesas,du-r8a77995", .data = &rcar_du_r8a7799x_info },
+ { .compatible = "renesas,du-r8a779a0", .data = &rcar_du_r8a779a0_info },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, rcar_du_of_table);
+
+const char *rcar_du_output_name(enum rcar_du_output output)
+{
+ static const char * const names[] = {
+ [RCAR_DU_OUTPUT_DPAD0] = "DPAD0",
+ [RCAR_DU_OUTPUT_DPAD1] = "DPAD1",
+ [RCAR_DU_OUTPUT_DSI0] = "DSI0",
+ [RCAR_DU_OUTPUT_DSI1] = "DSI1",
+ [RCAR_DU_OUTPUT_HDMI0] = "HDMI0",
+ [RCAR_DU_OUTPUT_HDMI1] = "HDMI1",
+ [RCAR_DU_OUTPUT_LVDS0] = "LVDS0",
+ [RCAR_DU_OUTPUT_LVDS1] = "LVDS1",
+ [RCAR_DU_OUTPUT_TCON] = "TCON",
+ };
+
+ if (output >= ARRAY_SIZE(names) || !names[output])
+ return "UNKNOWN";
+
+ return names[output];
+}
+
+/* -----------------------------------------------------------------------------
+ * DRM operations
+ */
+
+DEFINE_DRM_GEM_DMA_FOPS(rcar_du_fops);
+
+static const struct drm_driver rcar_du_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .dumb_create = rcar_du_dumb_create,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import_sg_table = rcar_du_gem_prime_import_sg_table,
+ .gem_prime_mmap = drm_gem_prime_mmap,
+ .fops = &rcar_du_fops,
+ .name = "rcar-du",
+ .desc = "Renesas R-Car Display Unit",
+ .date = "20130110",
+ .major = 1,
+ .minor = 0,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+#ifdef CONFIG_PM_SLEEP
+static int rcar_du_pm_suspend(struct device *dev)
+{
+ struct rcar_du_device *rcdu = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_suspend(&rcdu->ddev);
+}
+
+static int rcar_du_pm_resume(struct device *dev)
+{
+ struct rcar_du_device *rcdu = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_resume(&rcdu->ddev);
+}
+#endif
+
+static const struct dev_pm_ops rcar_du_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
+};
+
+/* -----------------------------------------------------------------------------
+ * Platform driver
+ */
+
+static int rcar_du_remove(struct platform_device *pdev)
+{
+ struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
+ struct drm_device *ddev = &rcdu->ddev;
+
+ drm_dev_unregister(ddev);
+ drm_atomic_helper_shutdown(ddev);
+
+ drm_kms_helper_poll_fini(ddev);
+
+ return 0;
+}
+
+static void rcar_du_shutdown(struct platform_device *pdev)
+{
+ struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
+
+ drm_atomic_helper_shutdown(&rcdu->ddev);
+}
+
+static int rcar_du_probe(struct platform_device *pdev)
+{
+ struct rcar_du_device *rcdu;
+ unsigned int mask;
+ int ret;
+
+ if (drm_firmware_drivers_only())
+ return -ENODEV;
+
+ /* Allocate and initialize the R-Car device structure. */
+ rcdu = devm_drm_dev_alloc(&pdev->dev, &rcar_du_driver,
+ struct rcar_du_device, ddev);
+ if (IS_ERR(rcdu))
+ return PTR_ERR(rcdu);
+
+ rcdu->dev = &pdev->dev;
+
+ rcdu->info = of_device_get_match_data(rcdu->dev);
+
+ platform_set_drvdata(pdev, rcdu);
+
+ /* I/O resources */
+ rcdu->mmio = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(rcdu->mmio))
+ return PTR_ERR(rcdu->mmio);
+
+ /*
+ * Set the DMA coherent mask to reflect the DU 32-bit DMA address space
+ * limitations. When sourcing frames from a VSP the DU doesn't perform
+ * any memory access so set the mask to 40 bits to accept all buffers.
+ */
+ mask = rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE) ? 40 : 32;
+ ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(mask));
+ if (ret)
+ return ret;
+
+ /* DRM/KMS objects */
+ ret = rcar_du_modeset_init(rcdu);
+ if (ret < 0) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "failed to initialize DRM/KMS (%d)\n", ret);
+ goto error;
+ }
+
+ /*
+ * Register the DRM device with the core and the connectors with
+ * sysfs.
+ */
+ ret = drm_dev_register(&rcdu->ddev, 0);
+ if (ret)
+ goto error;
+
+ DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
+
+ drm_fbdev_generic_setup(&rcdu->ddev, 32);
+
+ return 0;
+
+error:
+ drm_kms_helper_poll_fini(&rcdu->ddev);
+ return ret;
+}
+
+static struct platform_driver rcar_du_platform_driver = {
+ .probe = rcar_du_probe,
+ .remove = rcar_du_remove,
+ .shutdown = rcar_du_shutdown,
+ .driver = {
+ .name = "rcar-du",
+ .pm = &rcar_du_pm_ops,
+ .of_match_table = rcar_du_of_table,
+ },
+};
+
+module_platform_driver(rcar_du_platform_driver);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 11:53:32 +0000