/* * MIPI DSI Bus * * Copyright (C) 2012-2013, Samsung Electronics, Co., Ltd. * Andrzej Hajda <[email protected]> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <linux/device.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <drm/display/drm_dsc.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_print.h> #include <video/mipi_display.h> /** * DOC: dsi helpers * * These functions contain some common logic and helpers to deal with MIPI DSI * peripherals. * * Helpers are provided for a number of standard MIPI DSI command as well as a * subset of the MIPI DCS command set. */ static int mipi_dsi_device_match(struct device *dev, const struct device_driver *drv) { … } static int mipi_dsi_uevent(const struct device *dev, struct kobj_uevent_env *env) { … } static const struct dev_pm_ops mipi_dsi_device_pm_ops = …; static const struct bus_type mipi_dsi_bus_type = …; /** * of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a * device tree node * @np: device tree node * * Return: A pointer to the MIPI DSI device corresponding to @np or NULL if no * such device exists (or has not been registered yet). */ struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np) { … } EXPORT_SYMBOL(…); static void mipi_dsi_dev_release(struct device *dev) { … } static const struct device_type mipi_dsi_device_type = …; static struct mipi_dsi_device *mipi_dsi_device_alloc(struct mipi_dsi_host *host) { … } static int mipi_dsi_device_add(struct mipi_dsi_device *dsi) { … } #if IS_ENABLED(CONFIG_OF) static struct mipi_dsi_device * of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node) { … } #else static struct mipi_dsi_device * of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node) { return ERR_PTR(-ENODEV); } #endif /** * mipi_dsi_device_register_full - create a MIPI DSI device * @host: DSI host to which this device is connected * @info: pointer to template containing DSI device information * * Create a MIPI DSI device by using the device information provided by * mipi_dsi_device_info template * * Returns: * A pointer to the newly created MIPI DSI device, or, a pointer encoded * with an error */ struct mipi_dsi_device * mipi_dsi_device_register_full(struct mipi_dsi_host *host, const struct mipi_dsi_device_info *info) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_device_unregister - unregister MIPI DSI device * @dsi: DSI peripheral device */ void mipi_dsi_device_unregister(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); static void devm_mipi_dsi_device_unregister(void *arg) { … } /** * devm_mipi_dsi_device_register_full - create a managed MIPI DSI device * @dev: device to tie the MIPI-DSI device lifetime to * @host: DSI host to which this device is connected * @info: pointer to template containing DSI device information * * Create a MIPI DSI device by using the device information provided by * mipi_dsi_device_info template * * This is the managed version of mipi_dsi_device_register_full() which * automatically calls mipi_dsi_device_unregister() when @dev is * unbound. * * Returns: * A pointer to the newly created MIPI DSI device, or, a pointer encoded * with an error */ struct mipi_dsi_device * devm_mipi_dsi_device_register_full(struct device *dev, struct mipi_dsi_host *host, const struct mipi_dsi_device_info *info) { … } EXPORT_SYMBOL_GPL(…); static DEFINE_MUTEX(host_lock); static LIST_HEAD(host_list); /** * of_find_mipi_dsi_host_by_node() - find the MIPI DSI host matching a * device tree node * @node: device tree node * * Returns: * A pointer to the MIPI DSI host corresponding to @node or NULL if no * such device exists (or has not been registered yet). */ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node) { … } EXPORT_SYMBOL(…); int mipi_dsi_host_register(struct mipi_dsi_host *host) { … } EXPORT_SYMBOL(…); static int mipi_dsi_remove_device_fn(struct device *dev, void *priv) { … } void mipi_dsi_host_unregister(struct mipi_dsi_host *host) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_attach - attach a DSI device to its DSI host * @dsi: DSI peripheral */ int mipi_dsi_attach(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_detach - detach a DSI device from its DSI host * @dsi: DSI peripheral */ int mipi_dsi_detach(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); static void devm_mipi_dsi_detach(void *arg) { … } /** * devm_mipi_dsi_attach - Attach a MIPI-DSI device to its DSI Host * @dev: device to tie the MIPI-DSI device attachment lifetime to * @dsi: DSI peripheral * * This is the managed version of mipi_dsi_attach() which automatically * calls mipi_dsi_detach() when @dev is unbound. * * Returns: * 0 on success, a negative error code on failure. */ int devm_mipi_dsi_attach(struct device *dev, struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL_GPL(…); static ssize_t mipi_dsi_device_transfer(struct mipi_dsi_device *dsi, struct mipi_dsi_msg *msg) { … } /** * mipi_dsi_packet_format_is_short - check if a packet is of the short format * @type: MIPI DSI data type of the packet * * Return: true if the packet for the given data type is a short packet, false * otherwise. */ bool mipi_dsi_packet_format_is_short(u8 type) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_packet_format_is_long - check if a packet is of the long format * @type: MIPI DSI data type of the packet * * Return: true if the packet for the given data type is a long packet, false * otherwise. */ bool mipi_dsi_packet_format_is_long(u8 type) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_create_packet - create a packet from a message according to the * DSI protocol * @packet: pointer to a DSI packet structure * @msg: message to translate into a packet * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_create_packet(struct mipi_dsi_packet *packet, const struct mipi_dsi_msg *msg) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_shutdown_peripheral() - sends a Shutdown Peripheral command * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_turn_on_peripheral() - sends a Turn On Peripheral command * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /* * mipi_dsi_set_maximum_return_packet_size() - specify the maximum size of * the payload in a long packet transmitted from the peripheral back to the * host processor * @dsi: DSI peripheral device * @value: the maximum size of the payload * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi, u16 value) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_compression_mode_ext() - enable/disable DSC on the peripheral * @dsi: DSI peripheral device * @enable: Whether to enable or disable the DSC * @algo: Selected compression algorithm * @pps_selector: Select PPS from the table of pre-stored or uploaded PPS entries * * Enable or disable Display Stream Compression on the peripheral. * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_compression_mode_ext(struct mipi_dsi_device *dsi, bool enable, enum mipi_dsi_compression_algo algo, unsigned int pps_selector) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_compression_mode() - enable/disable DSC on the peripheral * @dsi: DSI peripheral device * @enable: Whether to enable or disable the DSC * * Enable or disable Display Stream Compression on the peripheral using the * default Picture Parameter Set and VESA DSC 1.1 algorithm. * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_picture_parameter_set() - transmit the DSC PPS to the peripheral * @dsi: DSI peripheral device * @pps: VESA DSC 1.1 Picture Parameter Set * * Transmit the VESA DSC 1.1 Picture Parameter Set to the peripheral. * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi, const struct drm_dsc_picture_parameter_set *pps) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_generic_write() - transmit data using a generic write packet * @dsi: DSI peripheral device * @payload: buffer containing the payload * @size: size of payload buffer * * This function will automatically choose the right data type depending on * the payload length. * * Return: The number of bytes transmitted on success or a negative error code * on failure. */ ssize_t mipi_dsi_generic_write(struct mipi_dsi_device *dsi, const void *payload, size_t size) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_generic_write_chatty() - mipi_dsi_generic_write() w/ an error log * @dsi: DSI peripheral device * @payload: buffer containing the payload * @size: size of payload buffer * * Like mipi_dsi_generic_write() but includes a dev_err() * call for you and returns 0 upon success, not the number of bytes sent. * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_generic_write_chatty(struct mipi_dsi_device *dsi, const void *payload, size_t size) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_generic_write_multi() - mipi_dsi_generic_write_chatty() w/ accum_err * @ctx: Context for multiple DSI transactions * @payload: buffer containing the payload * @size: size of payload buffer * * Like mipi_dsi_generic_write_chatty() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_generic_write_multi(struct mipi_dsi_multi_context *ctx, const void *payload, size_t size) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_generic_read() - receive data using a generic read packet * @dsi: DSI peripheral device * @params: buffer containing the request parameters * @num_params: number of request parameters * @data: buffer in which to return the received data * @size: size of receive buffer * * This function will automatically choose the right data type depending on * the number of parameters passed in. * * Return: The number of bytes successfully read or a negative error code on * failure. */ ssize_t mipi_dsi_generic_read(struct mipi_dsi_device *dsi, const void *params, size_t num_params, void *data, size_t size) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_write_buffer() - transmit a DCS command with payload * @dsi: DSI peripheral device * @data: buffer containing data to be transmitted * @len: size of transmission buffer * * This function will automatically choose the right data type depending on * the command payload length. * * Return: The number of bytes successfully transmitted or a negative error * code on failure. */ ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi, const void *data, size_t len) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_write_buffer_chatty - mipi_dsi_dcs_write_buffer() w/ an error log * @dsi: DSI peripheral device * @data: buffer containing data to be transmitted * @len: size of transmission buffer * * Like mipi_dsi_dcs_write_buffer() but includes a dev_err() * call for you and returns 0 upon success, not the number of bytes sent. * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_write_buffer_chatty(struct mipi_dsi_device *dsi, const void *data, size_t len) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_write_buffer_multi - mipi_dsi_dcs_write_buffer_chatty() w/ accum_err * @ctx: Context for multiple DSI transactions * @data: buffer containing data to be transmitted * @len: size of transmission buffer * * Like mipi_dsi_dcs_write_buffer_chatty() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_write_buffer_multi(struct mipi_dsi_multi_context *ctx, const void *data, size_t len) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_write() - send DCS write command * @dsi: DSI peripheral device * @cmd: DCS command * @data: buffer containing the command payload * @len: command payload length * * This function will automatically choose the right data type depending on * the command payload length. * * Return: The number of bytes successfully transmitted or a negative error * code on failure. */ ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd, const void *data, size_t len) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_read() - send DCS read request command * @dsi: DSI peripheral device * @cmd: DCS command * @data: buffer in which to receive data * @len: size of receive buffer * * Return: The number of bytes read or a negative error code on failure. */ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, size_t len) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_nop() - send DCS nop packet * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_soft_reset() - perform a software reset of the display module * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_get_power_mode() - query the display module's current power * mode * @dsi: DSI peripheral device * @mode: return location for the current power mode * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image * data used by the interface * @dsi: DSI peripheral device * @format: return location for the pixel format * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the * display module except interface communication * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_exit_sleep_mode() - enable all blocks inside the display * module * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_off() - stop displaying the image data on the * display device * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_on() - start displaying the image data on the * display device * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure */ int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_column_address() - define the column extent of the frame * memory accessed by the host processor * @dsi: DSI peripheral device * @start: first column of frame memory * @end: last column of frame memory * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start, u16 end) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_page_address() - define the page extent of the frame * memory accessed by the host processor * @dsi: DSI peripheral device * @start: first page of frame memory * @end: last page of frame memory * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start, u16 end) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_tear_off() - turn off the display module's Tearing Effect * output signal on the TE signal line * @dsi: DSI peripheral device * * Return: 0 on success or a negative error code on failure */ int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_tear_on() - turn on the display module's Tearing Effect * output signal on the TE signal line. * @dsi: DSI peripheral device * @mode: the Tearing Effect Output Line mode * * Return: 0 on success or a negative error code on failure */ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, enum mipi_dsi_dcs_tear_mode mode) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image * data used by the interface * @dsi: DSI peripheral device * @format: pixel format * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_tear_scanline() - set the scanline to use as trigger for * the Tearing Effect output signal of the display module * @dsi: DSI peripheral device * @scanline: scanline to use as trigger * * Return: 0 on success or a negative error code on failure */ int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_brightness() - sets the brightness value of the * display * @dsi: DSI peripheral device * @brightness: brightness value * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi, u16 brightness) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_get_display_brightness() - gets the current brightness value * of the display * @dsi: DSI peripheral device * @brightness: brightness value * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi, u16 *brightness) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_brightness_large() - sets the 16-bit brightness value * of the display * @dsi: DSI peripheral device * @brightness: brightness value * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_set_display_brightness_large(struct mipi_dsi_device *dsi, u16 brightness) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_get_display_brightness_large() - gets the current 16-bit * brightness value of the display * @dsi: DSI peripheral device * @brightness: brightness value * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_dcs_get_display_brightness_large(struct mipi_dsi_device *dsi, u16 *brightness) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_picture_parameter_set_multi() - transmit the DSC PPS to the peripheral * @ctx: Context for multiple DSI transactions * @pps: VESA DSC 1.1 Picture Parameter Set * * Like mipi_dsi_picture_parameter_set() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_picture_parameter_set_multi(struct mipi_dsi_multi_context *ctx, const struct drm_dsc_picture_parameter_set *pps) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_compression_mode_ext_multi() - enable/disable DSC on the peripheral * @ctx: Context for multiple DSI transactions * @enable: Whether to enable or disable the DSC * @algo: Selected compression algorithm * @pps_selector: Select PPS from the table of pre-stored or uploaded PPS entries * * Like mipi_dsi_compression_mode_ext() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_compression_mode_ext_multi(struct mipi_dsi_multi_context *ctx, bool enable, enum mipi_dsi_compression_algo algo, unsigned int pps_selector) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_nop_multi() - send DCS NOP packet * @ctx: Context for multiple DSI transactions * * Like mipi_dsi_dcs_nop() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_nop_multi(struct mipi_dsi_multi_context *ctx) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_enter_sleep_mode_multi() - send DCS ENTER_SLEEP_MODE packet * @ctx: Context for multiple DSI transactions * * Like mipi_dsi_dcs_enter_sleep_mode() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_enter_sleep_mode_multi(struct mipi_dsi_multi_context *ctx) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_exit_sleep_mode_multi() - send DCS EXIT_SLEEP_MODE packet * @ctx: Context for multiple DSI transactions * * Like mipi_dsi_dcs_exit_sleep_mode() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_exit_sleep_mode_multi(struct mipi_dsi_multi_context *ctx) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_off_multi() - send DCS SET_DISPLAY_OFF packet * @ctx: Context for multiple DSI transactions * * Like mipi_dsi_dcs_set_display_off() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_set_display_off_multi(struct mipi_dsi_multi_context *ctx) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_display_on_multi() - send DCS SET_DISPLAY_ON packet * @ctx: Context for multiple DSI transactions * * Like mipi_dsi_dcs_set_display_on() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_set_display_on_multi(struct mipi_dsi_multi_context *ctx) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_dcs_set_tear_on_multi() - send DCS SET_TEAR_ON packet * @ctx: Context for multiple DSI transactions * @mode: the Tearing Effect Output Line mode * * Like mipi_dsi_dcs_set_tear_on() but deals with errors in a way that * makes it convenient to make several calls in a row. */ void mipi_dsi_dcs_set_tear_on_multi(struct mipi_dsi_multi_context *ctx, enum mipi_dsi_dcs_tear_mode mode) { … } EXPORT_SYMBOL(…); static int mipi_dsi_drv_probe(struct device *dev) { … } static int mipi_dsi_drv_remove(struct device *dev) { … } static void mipi_dsi_drv_shutdown(struct device *dev) { … } /** * mipi_dsi_driver_register_full() - register a driver for DSI devices * @drv: DSI driver structure * @owner: owner module * * Return: 0 on success or a negative error code on failure. */ int mipi_dsi_driver_register_full(struct mipi_dsi_driver *drv, struct module *owner) { … } EXPORT_SYMBOL(…); /** * mipi_dsi_driver_unregister() - unregister a driver for DSI devices * @drv: DSI driver structure * * Return: 0 on success or a negative error code on failure. */ void mipi_dsi_driver_unregister(struct mipi_dsi_driver *drv) { … } EXPORT_SYMBOL(…); static int __init mipi_dsi_bus_init(void) { … } postcore_initcall(mipi_dsi_bus_init); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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