| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Thomas Petazzoni | 1111 | 92.97% | 1 | 6.25% |
| Mamta Shukla | 28 | 2.34% | 1 | 6.25% |
| Heiner Kallweit | 19 | 1.59% | 1 | 6.25% |
| Ming Yang | 14 | 1.17% | 1 | 6.25% |
| Noralf Trönnes | 5 | 0.42% | 1 | 6.25% |
| Joe Perches | 4 | 0.33% | 2 | 12.50% |
| Leonardo Brás | 3 | 0.25% | 2 | 12.50% |
| Daniel Vetter | 3 | 0.25% | 1 | 6.25% |
| Arnd Bergmann | 2 | 0.17% | 1 | 6.25% |
| Masanari Iida | 2 | 0.17% | 1 | 6.25% |
| Greg Kroah-Hartman | 2 | 0.17% | 2 | 12.50% |
| Andrew F. Davis | 1 | 0.08% | 1 | 6.25% |
| Ksenija Stanojevic | 1 | 0.08% | 1 | 6.25% |
| Total | 1195 | 16 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* Copyright (C) 2013 Noralf Tronnes */ #ifndef __LINUX_FBTFT_H #define __LINUX_FBTFT_H #include <linux/fb.h> #include <linux/spinlock.h> #include <linux/spi/spi.h> #include <linux/platform_device.h> #define FBTFT_ONBOARD_BACKLIGHT 2 #define FBTFT_GPIO_NO_MATCH 0xFFFF #define FBTFT_GPIO_NAME_SIZE 32 #define FBTFT_MAX_INIT_SEQUENCE 512 #define FBTFT_GAMMA_MAX_VALUES_TOTAL 128 #define FBTFT_OF_INIT_CMD BIT(24) #define FBTFT_OF_INIT_DELAY BIT(25) /** * struct fbtft_gpio - Structure that holds one pinname to gpio mapping * @name: pinname (reset, dc, etc.) * @gpio: GPIO number * */ struct fbtft_gpio { char name[FBTFT_GPIO_NAME_SIZE]; unsigned int gpio; }; struct fbtft_par; /** * struct fbtft_ops - FBTFT operations structure * @write: Writes to interface bus * @read: Reads from interface bus * @write_vmem: Writes video memory to display * @write_reg: Writes to controller register * @set_addr_win: Set the GRAM update window * @reset: Reset the LCD controller * @mkdirty: Marks display lines for update * @update_display: Updates the display * @init_display: Initializes the display * @blank: Blank the display (optional) * @request_gpios_match: Do pinname to gpio matching * @request_gpios: Request gpios from the kernel * @free_gpios: Free previously requested gpios * @verify_gpios: Verify that necessary gpios is present (optional) * @register_backlight: Used to register backlight device (optional) * @unregister_backlight: Unregister backlight device (optional) * @set_var: Configure LCD with values from variables like @rotate and @bgr * (optional) * @set_gamma: Set Gamma curve (optional) * * Most of these operations have default functions assigned to them in * fbtft_framebuffer_alloc() */ struct fbtft_ops { int (*write)(struct fbtft_par *par, void *buf, size_t len); int (*read)(struct fbtft_par *par, void *buf, size_t len); int (*write_vmem)(struct fbtft_par *par, size_t offset, size_t len); void (*write_register)(struct fbtft_par *par, int len, ...); void (*set_addr_win)(struct fbtft_par *par, int xs, int ys, int xe, int ye); void (*reset)(struct fbtft_par *par); void (*mkdirty)(struct fb_info *info, int from, int to); void (*update_display)(struct fbtft_par *par, unsigned int start_line, unsigned int end_line); int (*init_display)(struct fbtft_par *par); int (*blank)(struct fbtft_par *par, bool on); unsigned long (*request_gpios_match)(struct fbtft_par *par, const struct fbtft_gpio *gpio); int (*request_gpios)(struct fbtft_par *par); int (*verify_gpios)(struct fbtft_par *par); void (*register_backlight)(struct fbtft_par *par); void (*unregister_backlight)(struct fbtft_par *par); int (*set_var)(struct fbtft_par *par); int (*set_gamma)(struct fbtft_par *par, u32 *curves); }; /** * struct fbtft_display - Describes the display properties * @width: Width of display in pixels * @height: Height of display in pixels * @regwidth: LCD Controller Register width in bits * @buswidth: Display interface bus width in bits * @backlight: Backlight type. * @fbtftops: FBTFT operations provided by driver or device (platform_data) * @bpp: Bits per pixel * @fps: Frames per second * @txbuflen: Size of transmit buffer * @init_sequence: Pointer to LCD initialization array * @gamma: String representation of Gamma curve(s) * @gamma_num: Number of Gamma curves * @gamma_len: Number of values per Gamma curve * @debug: Initial debug value * * This structure is not stored by FBTFT except for init_sequence. */ struct fbtft_display { unsigned int width; unsigned int height; unsigned int regwidth; unsigned int buswidth; unsigned int backlight; struct fbtft_ops fbtftops; unsigned int bpp; unsigned int fps; int txbuflen; const s16 *init_sequence; char *gamma; int gamma_num; int gamma_len; unsigned long debug; }; /** * struct fbtft_platform_data - Passes display specific data to the driver * @display: Display properties * @gpios: Pointer to an array of pinname to gpio mappings * @rotate: Display rotation angle * @bgr: LCD Controller BGR bit * @fps: Frames per second (this will go away, use @fps in @fbtft_display) * @txbuflen: Size of transmit buffer * @startbyte: When set, enables use of Startbyte in transfers * @gamma: String representation of Gamma curve(s) * @extra: A way to pass extra info */ struct fbtft_platform_data { struct fbtft_display display; const struct fbtft_gpio *gpios; unsigned int rotate; bool bgr; unsigned int fps; int txbuflen; u8 startbyte; char *gamma; void *extra; }; /** * struct fbtft_par - Main FBTFT data structure * * This structure holds all relevant data to operate the display * * See sourcefile for documentation since nested structs is not * supported by kernel-doc. * */ /* @spi: Set if it is a SPI device * @pdev: Set if it is a platform device * @info: Pointer to framebuffer fb_info structure * @pdata: Pointer to platform data * @ssbuf: Not used * @pseudo_palette: Used by fb_set_colreg() * @txbuf.buf: Transmit buffer * @txbuf.len: Transmit buffer length * @buf: Small buffer used when writing init data over SPI * @startbyte: Used by some controllers when in SPI mode. * Format: 6 bit Device id + RS bit + RW bit * @fbtftops: FBTFT operations provided by driver or device (platform_data) * @dirty_lock: Protects dirty_lines_start and dirty_lines_end * @dirty_lines_start: Where to begin updating display * @dirty_lines_end: Where to end updating display * @gpio.reset: GPIO used to reset display * @gpio.dc: Data/Command signal, also known as RS * @gpio.rd: Read latching signal * @gpio.wr: Write latching signal * @gpio.latch: Bus latch signal, eg. 16->8 bit bus latch * @gpio.cs: LCD Chip Select with parallel interface bus * @gpio.db[16]: Parallel databus * @gpio.led[16]: Led control signals * @gpio.aux[16]: Auxiliary signals, not used by core * @init_sequence: Pointer to LCD initialization array * @gamma.lock: Mutex for Gamma curve locking * @gamma.curves: Pointer to Gamma curve array * @gamma.num_values: Number of values per Gamma curve * @gamma.num_curves: Number of Gamma curves * @debug: Pointer to debug value * @current_debug: * @first_update_done: Used to only time the first display update * @update_time: Used to calculate 'fps' in debug output * @bgr: BGR mode/\n * @extra: Extra info needed by driver */ struct fbtft_par { struct spi_device *spi; struct platform_device *pdev; struct fb_info *info; struct fbtft_platform_data *pdata; u16 *ssbuf; u32 pseudo_palette[16]; struct { void *buf; size_t len; } txbuf; u8 *buf; u8 startbyte; struct fbtft_ops fbtftops; spinlock_t dirty_lock; unsigned int dirty_lines_start; unsigned int dirty_lines_end; struct { int reset; int dc; int rd; int wr; int latch; int cs; int db[16]; int led[16]; int aux[16]; } gpio; const s16 *init_sequence; struct { struct mutex lock; u32 *curves; int num_values; int num_curves; } gamma; unsigned long debug; bool first_update_done; ktime_t update_time; bool bgr; void *extra; bool polarity; }; #define NUMARGS(...) (sizeof((int[]){__VA_ARGS__}) / sizeof(int)) #define write_reg(par, ...) \ ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__)) /* fbtft-core.c */ int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc); void fbtft_dbg_hex(const struct device *dev, int groupsize, void *buf, size_t len, const char *fmt, ...); struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display, struct device *dev, struct fbtft_platform_data *pdata); void fbtft_framebuffer_release(struct fb_info *info); int fbtft_register_framebuffer(struct fb_info *fb_info); int fbtft_unregister_framebuffer(struct fb_info *fb_info); void fbtft_register_backlight(struct fbtft_par *par); void fbtft_unregister_backlight(struct fbtft_par *par); int fbtft_init_display(struct fbtft_par *par); int fbtft_probe_common(struct fbtft_display *display, struct spi_device *sdev, struct platform_device *pdev); int fbtft_remove_common(struct device *dev, struct fb_info *info); /* fbtft-io.c */ int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len); int fbtft_write_spi_emulate_9(struct fbtft_par *par, void *buf, size_t len); int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len); int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len); int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len); int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len); /* fbtft-bus.c */ int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len); int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len); int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len); int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len); void fbtft_write_reg8_bus8(struct fbtft_par *par, int len, ...); void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...); void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...); void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...); #define FBTFT_REGISTER_DRIVER(_name, _compatible, _display) \ \ static int fbtft_driver_probe_spi(struct spi_device *spi) \ { \ return fbtft_probe_common(_display, spi, NULL); \ } \ \ static int fbtft_driver_remove_spi(struct spi_device *spi) \ { \ struct fb_info *info = spi_get_drvdata(spi); \ \ return fbtft_remove_common(&spi->dev, info); \ } \ \ static int fbtft_driver_probe_pdev(struct platform_device *pdev) \ { \ return fbtft_probe_common(_display, NULL, pdev); \ } \ \ static int fbtft_driver_remove_pdev(struct platform_device *pdev) \ { \ struct fb_info *info = platform_get_drvdata(pdev); \ \ return fbtft_remove_common(&pdev->dev, info); \ } \ \ static const struct of_device_id dt_ids[] = { \ { .compatible = _compatible }, \ {}, \ }; \ \ MODULE_DEVICE_TABLE(of, dt_ids); \ \ \ static struct spi_driver fbtft_driver_spi_driver = { \ .driver = { \ .name = _name, \ .of_match_table = of_match_ptr(dt_ids), \ }, \ .probe = fbtft_driver_probe_spi, \ .remove = fbtft_driver_remove_spi, \ }; \ \ static struct platform_driver fbtft_driver_platform_driver = { \ .driver = { \ .name = _name, \ .owner = THIS_MODULE, \ .of_match_table = of_match_ptr(dt_ids), \ }, \ .probe = fbtft_driver_probe_pdev, \ .remove = fbtft_driver_remove_pdev, \ }; \ \ static int __init fbtft_driver_module_init(void) \ { \ int ret; \ \ ret = spi_register_driver(&fbtft_driver_spi_driver); \ if (ret < 0) \ return ret; \ return platform_driver_register(&fbtft_driver_platform_driver); \ } \ \ static void __exit fbtft_driver_module_exit(void) \ { \ spi_unregister_driver(&fbtft_driver_spi_driver); \ platform_driver_unregister(&fbtft_driver_platform_driver); \ } \ \ module_init(fbtft_driver_module_init); \ module_exit(fbtft_driver_module_exit); /* Debug macros */ /* shorthand debug levels */ #define DEBUG_LEVEL_1 DEBUG_REQUEST_GPIOS #define DEBUG_LEVEL_2 (DEBUG_LEVEL_1 | DEBUG_DRIVER_INIT_FUNCTIONS | DEBUG_TIME_FIRST_UPDATE) #define DEBUG_LEVEL_3 (DEBUG_LEVEL_2 | DEBUG_RESET | DEBUG_INIT_DISPLAY | DEBUG_BLANK | DEBUG_REQUEST_GPIOS | DEBUG_FREE_GPIOS | DEBUG_VERIFY_GPIOS | DEBUG_BACKLIGHT | DEBUG_SYSFS) #define DEBUG_LEVEL_4 (DEBUG_LEVEL_2 | DEBUG_FB_READ | DEBUG_FB_WRITE | DEBUG_FB_FILLRECT | DEBUG_FB_COPYAREA | DEBUG_FB_IMAGEBLIT | DEBUG_FB_BLANK) #define DEBUG_LEVEL_5 (DEBUG_LEVEL_3 | DEBUG_UPDATE_DISPLAY) #define DEBUG_LEVEL_6 (DEBUG_LEVEL_4 | DEBUG_LEVEL_5) #define DEBUG_LEVEL_7 0xFFFFFFFF #define DEBUG_DRIVER_INIT_FUNCTIONS BIT(3) #define DEBUG_TIME_FIRST_UPDATE BIT(4) #define DEBUG_TIME_EACH_UPDATE BIT(5) #define DEBUG_DEFERRED_IO BIT(6) #define DEBUG_FBTFT_INIT_FUNCTIONS BIT(7) /* fbops */ #define DEBUG_FB_READ BIT(8) #define DEBUG_FB_WRITE BIT(9) #define DEBUG_FB_FILLRECT BIT(10) #define DEBUG_FB_COPYAREA BIT(11) #define DEBUG_FB_IMAGEBLIT BIT(12) #define DEBUG_FB_SETCOLREG BIT(13) #define DEBUG_FB_BLANK BIT(14) #define DEBUG_SYSFS BIT(16) /* fbtftops */ #define DEBUG_BACKLIGHT BIT(17) #define DEBUG_READ BIT(18) #define DEBUG_WRITE BIT(19) #define DEBUG_WRITE_VMEM BIT(20) #define DEBUG_WRITE_REGISTER BIT(21) #define DEBUG_SET_ADDR_WIN BIT(22) #define DEBUG_RESET BIT(23) #define DEBUG_MKDIRTY BIT(24) #define DEBUG_UPDATE_DISPLAY BIT(25) #define DEBUG_INIT_DISPLAY BIT(26) #define DEBUG_BLANK BIT(27) #define DEBUG_REQUEST_GPIOS BIT(28) #define DEBUG_FREE_GPIOS BIT(29) #define DEBUG_REQUEST_GPIOS_MATCH BIT(30) #define DEBUG_VERIFY_GPIOS BIT(31) #define fbtft_init_dbg(dev, format, arg...) \ do { \ if (unlikely((dev)->platform_data && \ (((struct fbtft_platform_data *)(dev)->platform_data)->display.debug & DEBUG_DRIVER_INIT_FUNCTIONS))) \ dev_info(dev, format, ##arg); \ } while (0) #define fbtft_par_dbg(level, par, format, arg...) \ do { \ if (unlikely(par->debug & level)) \ dev_info(par->info->device, format, ##arg); \ } while (0) #define fbtft_par_dbg_hex(level, par, dev, type, buf, num, format, arg...) \ do { \ if (unlikely((par)->debug & (level))) \ fbtft_dbg_hex(dev, sizeof(type), buf,\ (num) * sizeof(type), format, ##arg); \ } while (0) #endif /* __LINUX_FBTFT_H */
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