Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 210 insertions, 0 deletions

diff --git a/include/drm/drm_mipi_dbi.h b/include/drm/drm_mipi_dbi.h
new file mode 100644
index 000000000..14eaecb18
--- /dev/null
+++ b/include/drm/drm_mipi_dbi.h
@@ -0,0 +1,210 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * MIPI Display Bus Interface (DBI) LCD controller support
+ *
+ * Copyright 2016 Noralf Trønnes
+ */
+
+#ifndef __LINUX_MIPI_DBI_H
+#define __LINUX_MIPI_DBI_H
+
+#include <linux/mutex.h>
+#include <drm/drm_device.h>
+#include <drm/drm_simple_kms_helper.h>
+
+struct drm_rect;
+struct spi_device;
+struct gpio_desc;
+struct regulator;
+
+/**
+ * struct mipi_dbi - MIPI DBI interface
+ */
+struct mipi_dbi {
+	/**
+	 * @cmdlock: Command lock
+	 */
+	struct mutex cmdlock;
+
+	/**
+	 * @command: Bus specific callback executing commands.
+	 */
+	int (*command)(struct mipi_dbi *dbi, u8 *cmd, u8 *param, size_t num);
+
+	/**
+	 * @read_commands: Array of read commands terminated by a zero entry.
+	 *                 Reading is disabled if this is NULL.
+	 */
+	const u8 *read_commands;
+
+	/**
+	 * @swap_bytes: Swap bytes in buffer before transfer
+	 */
+	bool swap_bytes;
+
+	/**
+	 * @reset: Optional reset gpio
+	 */
+	struct gpio_desc *reset;
+
+	/* Type C specific */
+
+	/**
+	 * @spi: SPI device
+	 */
+	struct spi_device *spi;
+
+	/**
+	 * @dc: Optional D/C gpio.
+	 */
+	struct gpio_desc *dc;
+
+	/**
+	 * @tx_buf9: Buffer used for Option 1 9-bit conversion
+	 */
+	void *tx_buf9;
+
+	/**
+	 * @tx_buf9_len: Size of tx_buf9.
+	 */
+	size_t tx_buf9_len;
+};
+
+/**
+ * struct mipi_dbi_dev - MIPI DBI device
+ */
+struct mipi_dbi_dev {
+	/**
+	 * @drm: DRM device
+	 */
+	struct drm_device drm;
+
+	/**
+	 * @pipe: Display pipe structure
+	 */
+	struct drm_simple_display_pipe pipe;
+
+	/**
+	 * @connector: Connector
+	 */
+	struct drm_connector connector;
+
+	/**
+	 * @mode: Fixed display mode
+	 */
+	struct drm_display_mode mode;
+
+	/**
+	 * @tx_buf: Buffer used for transfer (copy clip rect area)
+	 */
+	u16 *tx_buf;
+
+	/**
+	 * @rotation: initial rotation in degrees Counter Clock Wise
+	 */
+	unsigned int rotation;
+
+	/**
+	 * @left_offset: Horizontal offset of the display relative to the
+	 *               controller's driver array
+	 */
+	unsigned int left_offset;
+
+	/**
+	 * @top_offset: Vertical offset of the display relative to the
+	 *              controller's driver array
+	 */
+	unsigned int top_offset;
+
+	/**
+	 * @backlight: backlight device (optional)
+	 */
+	struct backlight_device *backlight;
+
+	/**
+	 * @regulator: power regulator (optional)
+	 */
+	struct regulator *regulator;
+
+	/**
+	 * @dbi: MIPI DBI interface
+	 */
+	struct mipi_dbi dbi;
+
+	/**
+	 * @driver_private: Driver private data.
+	 *                  Necessary for drivers with private data since devm_drm_dev_alloc()
+	 *                  can't allocate structures that embed a structure which then again
+	 *                  embeds drm_device.
+	 */
+	void *driver_private;
+};
+
+static inline struct mipi_dbi_dev *drm_to_mipi_dbi_dev(struct drm_device *drm)
+{
+	return container_of(drm, struct mipi_dbi_dev, drm);
+}
+
+int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *dbi,
+		      struct gpio_desc *dc);
+int mipi_dbi_dev_init_with_formats(struct mipi_dbi_dev *dbidev,
+				   const struct drm_simple_display_pipe_funcs *funcs,
+				   const uint32_t *formats, unsigned int format_count,
+				   const struct drm_display_mode *mode,
+				   unsigned int rotation, size_t tx_buf_size);
+int mipi_dbi_dev_init(struct mipi_dbi_dev *dbidev,
+		      const struct drm_simple_display_pipe_funcs *funcs,
+		      const struct drm_display_mode *mode, unsigned int rotation);
+enum drm_mode_status mipi_dbi_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
+					      const struct drm_display_mode *mode);
+void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe,
+			  struct drm_plane_state *old_state);
+void mipi_dbi_enable_flush(struct mipi_dbi_dev *dbidev,
+			   struct drm_crtc_state *crtc_state,
+			   struct drm_plane_state *plan_state);
+void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe);
+void mipi_dbi_hw_reset(struct mipi_dbi *dbi);
+bool mipi_dbi_display_is_on(struct mipi_dbi *dbi);
+int mipi_dbi_poweron_reset(struct mipi_dbi_dev *dbidev);
+int mipi_dbi_poweron_conditional_reset(struct mipi_dbi_dev *dbidev);
+
+u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len);
+int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
+			  u8 bpw, const void *buf, size_t len);
+
+int mipi_dbi_command_read(struct mipi_dbi *dbi, u8 cmd, u8 *val);
+int mipi_dbi_command_buf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
+int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, const u8 *data,
+			      size_t len);
+int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
+		      struct drm_rect *clip, bool swap);
+/**
+ * mipi_dbi_command - MIPI DCS command with optional parameter(s)
+ * @dbi: MIPI DBI structure
+ * @cmd: Command
+ * @seq: Optional parameter(s)
+ *
+ * Send MIPI DCS command to the controller. Use mipi_dbi_command_read() for
+ * get/read.
+ *
+ * Returns:
+ * Zero on success, negative error code on failure.
+ */
+#define mipi_dbi_command(dbi, cmd, seq...) \
+({ \
+	const u8 d[] = { seq }; \
+	struct device *dev = &(dbi)->spi->dev;	\
+	int ret; \
+	ret = mipi_dbi_command_stackbuf(dbi, cmd, d, ARRAY_SIZE(d)); \
+	if (ret) \
+		dev_err_ratelimited(dev, "error %d when sending command %#02x\n", ret, cmd); \
+	ret; \
+})
+
+#ifdef CONFIG_DEBUG_FS
+void mipi_dbi_debugfs_init(struct drm_minor *minor);
+#else
+static inline void mipi_dbi_debugfs_init(struct drm_minor *minor) {}
+#endif
+
+#endif /* __LINUX_MIPI_DBI_H */