diff options
author | Dave Airlie <airlied@redhat.com> | 2013-12-23 10:43:42 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2013-12-23 10:43:42 +1000 |
commit | 785e15ecefbfe8ea311ae320fdacd482a84b3cc3 (patch) | |
tree | 46ed5413424d3893bf6236684e597388f68ad5ad /include/drm/drm_mipi_dsi.h | |
parent | e6c3dcdea6c95e4de98681a6cb3124ed8eacd5d6 (diff) | |
parent | 81239c6f7972d4909a6862d08ed1d2943983ffd4 (diff) |
Merge tag 'drm/for-3.14-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next
drm/tegra: Changes for v3.14-rc1
This series of changes brings DRM panel support as well as initial code
to register DSI hosts and peripherals and bind them to DSI drivers. The
panel and DSI code are both used by the simple panel driver.
The Tegra-specific changes build on top of this work to add support for
various panels found on Tegra boards. New drivers enable the DSI host
found on Tegra114 and a special hardware block that calibrates the pads
used for DSI and CSI. The host1x and the display controller drivers gain
basic Tegra124 support. To round of the new features, the DRM driver now
sports a very simple PRIME implementation.
In addition there are various improvements such as the host1x API being
exported so that client drivers (like the Tegra DRM driver) can be built
as modules. HDMI now does better power management and legacy FBDEV can
now be disabled via Kconfig (though it's still enabled by default). A
few sparse warnings have been squashed and various parts of the code
have become more robust.
* tag 'drm/for-3.14-rc1' of git://anongit.freedesktop.org/tegra/linux: (121 commits)
drm/tegra: fix compile w/ CONFIG_DYNAMIC_DEBUG
drm/tegra: Add PRIME support
drm/tegra: Relocate some output-specific code
drm/tegra: Add Tegra124 DC support
drm/tegra: Fix small leak on error in tegra_fb_alloc()
drm/tegra: Make legacy fbdev support optional
drm/tegra: Sort reverse-dependencies alphabetically
drm/tegra: Fix return value check
drm/tegra: Add DSI support
drm/tegra: Disable outputs for power-saving
drm/tegra: Track HDMI enable state
drm/tegra: Fix HDMI audio frequency typo
drm/tegra: Do not export tegra_bo_ops
drm/tegra: Remove spurious blank line
drm/tegra: Increase compile test coverage
drm/tegra: Allow the driver to be built as a module
gpu: host1x: Add Tegra124 support
gpu: host1x: clk_round_rate() can return a zero upon error
gpu: host1x: Fix build warnings
gpu: host1x: Increase compile test coverage
...
Diffstat (limited to 'include/drm/drm_mipi_dsi.h')
-rw-r--r-- | include/drm/drm_mipi_dsi.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h new file mode 100644 index 00000000000..d32628acdd9 --- /dev/null +++ b/include/drm/drm_mipi_dsi.h @@ -0,0 +1,158 @@ +/* + * MIPI DSI Bus + * + * Copyright (C) 2012-2013, Samsung Electronics, Co., Ltd. + * Andrzej Hajda <a.hajda@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __DRM_MIPI_DSI_H__ +#define __DRM_MIPI_DSI_H__ + +#include <linux/device.h> + +struct mipi_dsi_host; +struct mipi_dsi_device; + +/** + * struct mipi_dsi_msg - read/write DSI buffer + * @channel: virtual channel id + * @type: payload data type + * @tx_len: length of @tx_buf + * @tx_buf: data to be written + * @rx_len: length of @rx_buf + * @rx_buf: data to be read, or NULL + */ +struct mipi_dsi_msg { + u8 channel; + u8 type; + + size_t tx_len; + const void *tx_buf; + + size_t rx_len; + void *rx_buf; +}; + +/** + * struct mipi_dsi_host_ops - DSI bus operations + * @attach: attach DSI device to DSI host + * @detach: detach DSI device from DSI host + * @transfer: send and/or receive DSI packet, return number of received bytes, + * or error + */ +struct mipi_dsi_host_ops { + int (*attach)(struct mipi_dsi_host *host, + struct mipi_dsi_device *dsi); + int (*detach)(struct mipi_dsi_host *host, + struct mipi_dsi_device *dsi); + ssize_t (*transfer)(struct mipi_dsi_host *host, + struct mipi_dsi_msg *msg); +}; + +/** + * struct mipi_dsi_host - DSI host device + * @dev: driver model device node for this DSI host + * @ops: DSI host operations + */ +struct mipi_dsi_host { + struct device *dev; + const struct mipi_dsi_host_ops *ops; +}; + +int mipi_dsi_host_register(struct mipi_dsi_host *host); +void mipi_dsi_host_unregister(struct mipi_dsi_host *host); + +/* DSI mode flags */ + +/* 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) + +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_device - DSI peripheral device + * @host: DSI host for this peripheral + * @dev: driver model device node for this peripheral + * @channel: virtual channel assigned to the peripheral + * @format: pixel format for video mode + * @lanes: number of active data lanes + * @mode_flags: DSI operation mode related flags + */ +struct mipi_dsi_device { + struct mipi_dsi_host *host; + struct device dev; + + unsigned int channel; + unsigned int lanes; + enum mipi_dsi_pixel_format format; + unsigned long mode_flags; +}; + +#define to_mipi_dsi_device(d) container_of(d, struct mipi_dsi_device, dev) + +int mipi_dsi_attach(struct mipi_dsi_device *dsi); +int mipi_dsi_detach(struct mipi_dsi_device *dsi); +int mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, unsigned int channel, + const void *data, size_t len); +ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, unsigned int channel, + u8 cmd, void *data, size_t len); + +/** + * struct mipi_dsi_driver - DSI driver + * @driver: device driver model driver + * @probe: callback for device binding + * @remove: callback for device unbinding + */ +struct mipi_dsi_driver { + struct device_driver driver; + int(*probe)(struct mipi_dsi_device *dsi); + int(*remove)(struct mipi_dsi_device *dsi); +}; + +#define to_mipi_dsi_driver(d) container_of(d, struct mipi_dsi_driver, driver) + +static inline void *mipi_dsi_get_drvdata(const struct mipi_dsi_device *dsi) +{ + return dev_get_drvdata(&dsi->dev); +} + +static inline void mipi_dsi_set_drvdata(struct mipi_dsi_device *dsi, void *data) +{ + dev_set_drvdata(&dsi->dev, data); +} + +int mipi_dsi_driver_register(struct mipi_dsi_driver *driver); +void mipi_dsi_driver_unregister(struct mipi_dsi_driver *driver); + +#define module_mipi_dsi_driver(__mipi_dsi_driver) \ + module_driver(__mipi_dsi_driver, mipi_dsi_driver_register, \ + mipi_dsi_driver_unregister) + +#endif /* __DRM_MIPI_DSI__ */ |