MLK-18945-1 video: Add mipi dsi bridge driver

Add a mipi dsi bridge driver to abstract mipi dsi interfaces for
mipi panel and display controller drivers.
So for panel and display conntroller drivers, they can use same functions
to access mipi dsi controller.

Signed-off-by: Ye Li <ye.li@nxp.com>

4 files changed, 205 insertions, 0 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 43c68a55d1..2b55054c18 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -480,6 +480,11 @@ config VIDEO_IMX8_HDMI
 	help
 	  Support for HDMI i.MX8 processors.
 
+config IMX_MIPI_DSI_BRIDGE
+	bool
+	help
+	  Enable MIPI DSI bridge interface for display controller.
+
 config MXC_EPDC
 	bool "i.MX EPDC support"
 	depends on LCD && (MX7 || MX6)
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 8b816b9858..62a8dabbcb 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -69,6 +69,7 @@ obj-$(CONFIG_VIDEO_CSI) += mxc_csi.o
 obj-$(CONFIG_VIDEO_PXP) += mxc_pxp.o
 obj-$(CONFIG_VIDEO_GIS) += mxc_gis.o
 obj-$(CONFIG_MXC_MIPI_DSI_NORTHWEST) += mipi_dsi_northwest.o
+obj-$(CONFIG_IMX_MIPI_DSI_BRIDGE) += imx_mipi_dsi_bridge.o
 obj-$(CONFIG_HX8363) += hx8363_wvga.o
 
 obj-y += bridge/
diff --git a/drivers/video/imx_mipi_dsi_bridge.c b/drivers/video/imx_mipi_dsi_bridge.c
new file mode 100644
index 0000000000..a3e9e26317
--- /dev/null
+++ b/drivers/video/imx_mipi_dsi_bridge.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include <imx_mipi_dsi_bridge.h>
+
+static struct mipi_dsi_bridge_driver *registered_driver = NULL;
+
+int imx_mipi_dsi_bridge_attach(struct mipi_dsi_client_dev *dsi_dev)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->attach)
+		ret = registered_driver->attach(registered_driver, dsi_dev);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_mode_set(struct fb_videomode *pvmode)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->mode_set)
+		ret = registered_driver->mode_set(registered_driver, pvmode);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_enable(void)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->enable)
+		ret = registered_driver->enable(registered_driver);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_disable(void)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->disable)
+		ret = registered_driver->disable(registered_driver);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_pkt_write(u8 data_type, const u8 *buf, int len)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->pkt_write)
+		ret = registered_driver->pkt_write(registered_driver, data_type, buf, len);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_add_client_driver(struct mipi_dsi_client_driver *client_driver)
+{
+	int ret = 0;
+
+	if (!registered_driver)
+		return -EPERM;
+
+	if (registered_driver->add_client_driver)
+		ret = registered_driver->add_client_driver(registered_driver, client_driver);
+
+	return ret;
+}
+
+int imx_mipi_dsi_bridge_register_driver(struct mipi_dsi_bridge_driver *driver)
+{
+	if (!driver)
+		return -EINVAL;
+
+	if (registered_driver)
+		return -EBUSY;
+
+	registered_driver = driver;
+
+	return 0;
+}
diff --git a/include/imx_mipi_dsi_bridge.h b/include/imx_mipi_dsi_bridge.h
new file mode 100644
index 0000000000..a6f73c1043
--- /dev/null
+++ b/include/imx_mipi_dsi_bridge.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __IMX_MIPI_DSIM_BRIDGE_H__
+#define __IMX_MIPI_DSIM_BRIDGE_H__
+
+#include <linux/fb.h>
+
+/* video mode */
+#define MIPI_DSI_MODE_VIDEO		BIT(0)
+/* video burst mode */
+#define MIPI_DSI_MODE_VIDEO_BURST	BIT(1)
+/* video pulse mode */
+#define MIPI_DSI_MODE_VIDEO_SYNC_PULSE	BIT(2)
+/* enable auto vertical count mode */
+#define MIPI_DSI_MODE_VIDEO_AUTO_VERT	BIT(3)
+/* enable hsync-end packets in vsync-pulse and v-porch area */
+#define MIPI_DSI_MODE_VIDEO_HSE		BIT(4)
+/* disable hfront-porch area */
+#define MIPI_DSI_MODE_VIDEO_HFP		BIT(5)
+/* disable hback-porch area */
+#define MIPI_DSI_MODE_VIDEO_HBP		BIT(6)
+/* disable hsync-active area */
+#define MIPI_DSI_MODE_VIDEO_HSA		BIT(7)
+/* flush display FIFO on vsync pulse */
+#define MIPI_DSI_MODE_VSYNC_FLUSH	BIT(8)
+/* disable EoT packets in HS mode */
+#define MIPI_DSI_MODE_EOT_PACKET	BIT(9)
+/* device supports non-continuous clock behavior (DSI spec 5.6.1) */
+#define MIPI_DSI_CLOCK_NON_CONTINUOUS	BIT(10)
+/* transmit data in low power */
+#define MIPI_DSI_MODE_LPM		BIT(11)
+
+#define DSI_CMD_BUF_MAXSIZE         (128)
+
+enum mipi_dsi_pixel_format {
+	MIPI_DSI_FMT_RGB888,
+	MIPI_DSI_FMT_RGB666,
+	MIPI_DSI_FMT_RGB666_PACKED,
+	MIPI_DSI_FMT_RGB565,
+};
+
+struct mipi_dsi_client_dev {
+	unsigned int channel;
+	unsigned int lanes;
+	enum mipi_dsi_pixel_format format;
+	unsigned long mode_flags;
+	const char *name;
+};
+
+struct mipi_dsi_client_driver {
+	int	(*dsi_client_setup)(struct mipi_dsi_client_dev *panel_dev);
+	const char *name;
+};
+
+struct mipi_dsi_bridge_driver {
+	int (*attach)(struct mipi_dsi_bridge_driver *bridge_driver, struct mipi_dsi_client_dev *dsi_dev);
+	int (*enable)(struct mipi_dsi_bridge_driver *bridge_driver);
+	int (*disable)(struct mipi_dsi_bridge_driver *bridge_driver);
+	int (*mode_set)(struct mipi_dsi_bridge_driver *bridge_driver, struct fb_videomode *pvmode);
+	int (*pkt_write)(struct mipi_dsi_bridge_driver *bridge_driver, u8 data_type, const u8 *buf, int len);
+	int (*add_client_driver)(struct mipi_dsi_bridge_driver *bridge_driver, struct mipi_dsi_client_driver *client_driver);
+	const char *name;
+	void *driver_private;
+};
+
+static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
+{
+	switch (fmt) {
+	case MIPI_DSI_FMT_RGB888:
+	case MIPI_DSI_FMT_RGB666:
+		return 24;
+
+	case MIPI_DSI_FMT_RGB666_PACKED:
+		return 18;
+
+	case MIPI_DSI_FMT_RGB565:
+		return 16;
+	}
+
+	return -EINVAL;
+}
+
+int imx_mipi_dsi_bridge_attach(struct mipi_dsi_client_dev *dsi_dev);
+int imx_mipi_dsi_bridge_mode_set(struct fb_videomode *pvmode);
+int imx_mipi_dsi_bridge_enable(void);
+int imx_mipi_dsi_bridge_disable(void);
+int imx_mipi_dsi_bridge_pkt_write(u8 data_type, const u8 *buf, int len);
+int imx_mipi_dsi_bridge_add_client_driver(struct mipi_dsi_client_driver *client_driver);
+int imx_mipi_dsi_bridge_register_driver(struct mipi_dsi_bridge_driver *driver);
+
+#endif