Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 315 insertions, 0 deletions

diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
new file mode 100644
index 000000000..58d8a98c7
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -0,0 +1,315 @@
+/*
+ * shmob_drm_drv.c  --  SH Mobile DRM driver
+ *
+ * Copyright (C) 2012 Renesas Electronics Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include "shmob_drm_drv.h"
+#include "shmob_drm_kms.h"
+#include "shmob_drm_plane.h"
+#include "shmob_drm_regs.h"
+
+/* -----------------------------------------------------------------------------
+ * Hardware initialization
+ */
+
+static int shmob_drm_init_interface(struct shmob_drm_device *sdev)
+{
+	static const u32 ldmt1r[] = {
+		[SHMOB_DRM_IFACE_RGB8] = LDMT1R_MIFTYP_RGB8,
+		[SHMOB_DRM_IFACE_RGB9] = LDMT1R_MIFTYP_RGB9,
+		[SHMOB_DRM_IFACE_RGB12A] = LDMT1R_MIFTYP_RGB12A,
+		[SHMOB_DRM_IFACE_RGB12B] = LDMT1R_MIFTYP_RGB12B,
+		[SHMOB_DRM_IFACE_RGB16] = LDMT1R_MIFTYP_RGB16,
+		[SHMOB_DRM_IFACE_RGB18] = LDMT1R_MIFTYP_RGB18,
+		[SHMOB_DRM_IFACE_RGB24] = LDMT1R_MIFTYP_RGB24,
+		[SHMOB_DRM_IFACE_YUV422] = LDMT1R_MIFTYP_YCBCR,
+		[SHMOB_DRM_IFACE_SYS8A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8A,
+		[SHMOB_DRM_IFACE_SYS8B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8B,
+		[SHMOB_DRM_IFACE_SYS8C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8C,
+		[SHMOB_DRM_IFACE_SYS8D] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8D,
+		[SHMOB_DRM_IFACE_SYS9] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS9,
+		[SHMOB_DRM_IFACE_SYS12] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS12,
+		[SHMOB_DRM_IFACE_SYS16A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16A,
+		[SHMOB_DRM_IFACE_SYS16B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16B,
+		[SHMOB_DRM_IFACE_SYS16C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16C,
+		[SHMOB_DRM_IFACE_SYS18] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS18,
+		[SHMOB_DRM_IFACE_SYS24] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS24,
+	};
+
+	if (sdev->pdata->iface.interface >= ARRAY_SIZE(ldmt1r)) {
+		dev_err(sdev->dev, "invalid interface type %u\n",
+			sdev->pdata->iface.interface);
+		return -EINVAL;
+	}
+
+	sdev->ldmt1r = ldmt1r[sdev->pdata->iface.interface];
+	return 0;
+}
+
+static int shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
+					    enum shmob_drm_clk_source clksrc)
+{
+	struct clk *clk;
+	char *clkname;
+
+	switch (clksrc) {
+	case SHMOB_DRM_CLK_BUS:
+		clkname = "bus_clk";
+		sdev->lddckr = LDDCKR_ICKSEL_BUS;
+		break;
+	case SHMOB_DRM_CLK_PERIPHERAL:
+		clkname = "peripheral_clk";
+		sdev->lddckr = LDDCKR_ICKSEL_MIPI;
+		break;
+	case SHMOB_DRM_CLK_EXTERNAL:
+		clkname = NULL;
+		sdev->lddckr = LDDCKR_ICKSEL_HDMI;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	clk = devm_clk_get(sdev->dev, clkname);
+	if (IS_ERR(clk)) {
+		dev_err(sdev->dev, "cannot get dot clock %s\n", clkname);
+		return PTR_ERR(clk);
+	}
+
+	sdev->clock = clk;
+	return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * DRM operations
+ */
+
+static irqreturn_t shmob_drm_irq(int irq, void *arg)
+{
+	struct drm_device *dev = arg;
+	struct shmob_drm_device *sdev = dev->dev_private;
+	unsigned long flags;
+	u32 status;
+
+	/* Acknowledge interrupts. Putting interrupt enable and interrupt flag
+	 * bits in the same register is really brain-dead design and requires
+	 * taking a spinlock.
+	 */
+	spin_lock_irqsave(&sdev->irq_lock, flags);
+	status = lcdc_read(sdev, LDINTR);
+	lcdc_write(sdev, LDINTR, status ^ LDINTR_STATUS_MASK);
+	spin_unlock_irqrestore(&sdev->irq_lock, flags);
+
+	if (status & LDINTR_VES) {
+		drm_handle_vblank(dev, 0);
+		shmob_drm_crtc_finish_page_flip(&sdev->crtc);
+	}
+
+	return IRQ_HANDLED;
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(shmob_drm_fops);
+
+static struct drm_driver shmob_drm_driver = {
+	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
+				| DRIVER_PRIME,
+	.irq_handler		= shmob_drm_irq,
+	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= drm_gem_prime_import,
+	.gem_prime_export	= drm_gem_prime_export,
+	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
+	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
+	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
+	.dumb_create		= drm_gem_cma_dumb_create,
+	.fops			= &shmob_drm_fops,
+	.name			= "shmob-drm",
+	.desc			= "Renesas SH Mobile DRM",
+	.date			= "20120424",
+	.major			= 1,
+	.minor			= 0,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+#ifdef CONFIG_PM_SLEEP
+static int shmob_drm_pm_suspend(struct device *dev)
+{
+	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
+
+	drm_kms_helper_poll_disable(sdev->ddev);
+	shmob_drm_crtc_suspend(&sdev->crtc);
+
+	return 0;
+}
+
+static int shmob_drm_pm_resume(struct device *dev)
+{
+	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
+
+	drm_modeset_lock_all(sdev->ddev);
+	shmob_drm_crtc_resume(&sdev->crtc);
+	drm_modeset_unlock_all(sdev->ddev);
+
+	drm_kms_helper_poll_enable(sdev->ddev);
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops shmob_drm_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
+};
+
+/* -----------------------------------------------------------------------------
+ * Platform driver
+ */
+
+static int shmob_drm_remove(struct platform_device *pdev)
+{
+	struct shmob_drm_device *sdev = platform_get_drvdata(pdev);
+	struct drm_device *ddev = sdev->ddev;
+
+	drm_dev_unregister(ddev);
+	drm_kms_helper_poll_fini(ddev);
+	drm_mode_config_cleanup(ddev);
+	drm_irq_uninstall(ddev);
+	drm_dev_unref(ddev);
+
+	return 0;
+}
+
+static int shmob_drm_probe(struct platform_device *pdev)
+{
+	struct shmob_drm_platform_data *pdata = pdev->dev.platform_data;
+	struct shmob_drm_device *sdev;
+	struct drm_device *ddev;
+	struct resource *res;
+	unsigned int i;
+	int ret;
+
+	if (pdata == NULL) {
+		dev_err(&pdev->dev, "no platform data\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * Allocate and initialize the driver private data, I/O resources and
+	 * clocks.
+	 */
+	sdev = devm_kzalloc(&pdev->dev, sizeof(*sdev), GFP_KERNEL);
+	if (sdev == NULL)
+		return -ENOMEM;
+
+	sdev->dev = &pdev->dev;
+	sdev->pdata = pdata;
+	spin_lock_init(&sdev->irq_lock);
+
+	platform_set_drvdata(pdev, sdev);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	sdev->mmio = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(sdev->mmio))
+		return PTR_ERR(sdev->mmio);
+
+	ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
+	if (ret < 0)
+		return ret;
+
+	ret = shmob_drm_init_interface(sdev);
+	if (ret < 0)
+		return ret;
+
+	/* Allocate and initialize the DRM device. */
+	ddev = drm_dev_alloc(&shmob_drm_driver, &pdev->dev);
+	if (IS_ERR(ddev))
+		return PTR_ERR(ddev);
+
+	sdev->ddev = ddev;
+	ddev->dev_private = sdev;
+
+	ret = shmob_drm_modeset_init(sdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to initialize mode setting\n");
+		goto err_free_drm_dev;
+	}
+
+	for (i = 0; i < 4; ++i) {
+		ret = shmob_drm_plane_create(sdev, i);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "failed to create plane %u\n", i);
+			goto err_modeset_cleanup;
+		}
+	}
+
+	ret = drm_vblank_init(ddev, 1);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to initialize vblank\n");
+		goto err_modeset_cleanup;
+	}
+
+	ret = drm_irq_install(ddev, platform_get_irq(pdev, 0));
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to install IRQ handler\n");
+		goto err_modeset_cleanup;
+	}
+
+	/*
+	 * Register the DRM device with the core and the connectors with
+	 * sysfs.
+	 */
+	ret = drm_dev_register(ddev, 0);
+	if (ret < 0)
+		goto err_irq_uninstall;
+
+	return 0;
+
+err_irq_uninstall:
+	drm_irq_uninstall(ddev);
+err_modeset_cleanup:
+	drm_kms_helper_poll_fini(ddev);
+	drm_mode_config_cleanup(ddev);
+err_free_drm_dev:
+	drm_dev_unref(ddev);
+
+	return ret;
+}
+
+static struct platform_driver shmob_drm_platform_driver = {
+	.probe		= shmob_drm_probe,
+	.remove		= shmob_drm_remove,
+	.driver		= {
+		.name	= "shmob-drm",
+		.pm	= &shmob_drm_pm_ops,
+	},
+};
+
+module_platform_driver(shmob_drm_platform_driver);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_DESCRIPTION("Renesas SH Mobile DRM Driver");
+MODULE_LICENSE("GPL");