| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Maxime Ripard | 1836 | 49.09% | 5 | 8.62% |
| Thomas Niederprüm | 738 | 19.73% | 8 | 13.79% |
| Marko Kohtala | 371 | 9.92% | 3 | 5.17% |
| Geert Uytterhoeven | 320 | 8.56% | 6 | 10.34% |
| Lad Prabhakar | 109 | 2.91% | 2 | 3.45% |
| Tomi Valkeinen | 67 | 1.79% | 2 | 3.45% |
| Andy Shevchenko | 63 | 1.68% | 3 | 5.17% |
| Thomas Zimmermann | 44 | 1.18% | 4 | 6.90% |
| Olliver Schinagl | 42 | 1.12% | 2 | 3.45% |
| Bastian Stender | 40 | 1.07% | 1 | 1.72% |
| Jyri Sarha | 31 | 0.83% | 2 | 3.45% |
| Rodrigo Alencar | 23 | 0.61% | 1 | 1.72% |
| Julia Lawall | 11 | 0.29% | 2 | 3.45% |
| Julian Scheel | 11 | 0.29% | 1 | 1.72% |
| caihuoqing | 8 | 0.21% | 1 | 1.72% |
| Boris Brezillon | 5 | 0.13% | 1 | 1.72% |
| Uwe Kleine-König | 4 | 0.11% | 3 | 5.17% |
| Michal Vokáč | 4 | 0.11% | 2 | 3.45% |
| Arnd Bergmann | 3 | 0.08% | 1 | 1.72% |
| SF Markus Elfring | 2 | 0.05% | 1 | 1.72% |
| Thomas Gleixner | 2 | 0.05% | 1 | 1.72% |
| Masanari Iida | 1 | 0.03% | 1 | 1.72% |
| Jani Nikula | 1 | 0.03% | 1 | 1.72% |
| Jilin Yuan | 1 | 0.03% | 1 | 1.72% |
| Corentin Labbe | 1 | 0.03% | 1 | 1.72% |
| Gustavo A. R. Silva | 1 | 0.03% | 1 | 1.72% |
| Sean Young | 1 | 0.03% | 1 | 1.72% |
| Total | 3740 | 58 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for the Solomon SSD1307 OLED controller * * Copyright 2012 Free Electrons */ #include <linux/backlight.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/property.h> #include <linux/pwm.h> #include <linux/uaccess.h> #include <linux/regulator/consumer.h> #define SSD1307FB_DATA 0x40 #define SSD1307FB_COMMAND 0x80 #define SSD1307FB_SET_ADDRESS_MODE 0x20 #define SSD1307FB_SET_ADDRESS_MODE_HORIZONTAL (0x00) #define SSD1307FB_SET_ADDRESS_MODE_VERTICAL (0x01) #define SSD1307FB_SET_ADDRESS_MODE_PAGE (0x02) #define SSD1307FB_SET_COL_RANGE 0x21 #define SSD1307FB_SET_PAGE_RANGE 0x22 #define SSD1307FB_CONTRAST 0x81 #define SSD1307FB_SET_LOOKUP_TABLE 0x91 #define SSD1307FB_CHARGE_PUMP 0x8d #define SSD1307FB_SEG_REMAP_ON 0xa1 #define SSD1307FB_DISPLAY_OFF 0xae #define SSD1307FB_SET_MULTIPLEX_RATIO 0xa8 #define SSD1307FB_DISPLAY_ON 0xaf #define SSD1307FB_START_PAGE_ADDRESS 0xb0 #define SSD1307FB_SET_DISPLAY_OFFSET 0xd3 #define SSD1307FB_SET_CLOCK_FREQ 0xd5 #define SSD1307FB_SET_AREA_COLOR_MODE 0xd8 #define SSD1307FB_SET_PRECHARGE_PERIOD 0xd9 #define SSD1307FB_SET_COM_PINS_CONFIG 0xda #define SSD1307FB_SET_VCOMH 0xdb #define MAX_CONTRAST 255 #define REFRESHRATE 1 static u_int refreshrate = REFRESHRATE; module_param(refreshrate, uint, 0); struct ssd1307fb_deviceinfo { u32 default_vcomh; u32 default_dclk_div; u32 default_dclk_frq; bool need_pwm; bool need_chargepump; }; struct ssd1307fb_par { unsigned area_color_enable : 1; unsigned com_invdir : 1; unsigned com_lrremap : 1; unsigned com_seq : 1; unsigned lookup_table_set : 1; unsigned low_power : 1; unsigned seg_remap : 1; u32 com_offset; u32 contrast; u32 dclk_div; u32 dclk_frq; const struct ssd1307fb_deviceinfo *device_info; struct i2c_client *client; u32 height; struct fb_info *info; u8 lookup_table[4]; u32 page_offset; u32 col_offset; u32 prechargep1; u32 prechargep2; struct pwm_device *pwm; struct gpio_desc *reset; struct regulator *vbat_reg; u32 vcomh; u32 width; /* Cached address ranges */ u8 col_start; u8 col_end; u8 page_start; u8 page_end; }; struct ssd1307fb_array { u8 type; u8 data[]; }; static const struct fb_fix_screeninfo ssd1307fb_fix = { .id = "Solomon SSD1307", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_MONO10, .xpanstep = 0, .ypanstep = 0, .ywrapstep = 0, .accel = FB_ACCEL_NONE, }; static const struct fb_var_screeninfo ssd1307fb_var = { .bits_per_pixel = 1, .red = { .length = 1 }, .green = { .length = 1 }, .blue = { .length = 1 }, }; static struct ssd1307fb_array *ssd1307fb_alloc_array(u32 len, u8 type) { struct ssd1307fb_array *array; array = kzalloc(sizeof(struct ssd1307fb_array) + len, GFP_KERNEL); if (!array) return NULL; array->type = type; return array; } static int ssd1307fb_write_array(struct i2c_client *client, struct ssd1307fb_array *array, u32 len) { int ret; len += sizeof(struct ssd1307fb_array); ret = i2c_master_send(client, (u8 *)array, len); if (ret != len) { dev_err(&client->dev, "Couldn't send I2C command.\n"); return ret; } return 0; } static inline int ssd1307fb_write_cmd(struct i2c_client *client, u8 cmd) { struct ssd1307fb_array *array; int ret; array = ssd1307fb_alloc_array(1, SSD1307FB_COMMAND); if (!array) return -ENOMEM; array->data[0] = cmd; ret = ssd1307fb_write_array(client, array, 1); kfree(array); return ret; } static int ssd1307fb_set_col_range(struct ssd1307fb_par *par, u8 col_start, u8 cols) { u8 col_end = col_start + cols - 1; int ret; if (col_start == par->col_start && col_end == par->col_end) return 0; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COL_RANGE); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, col_start); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, col_end); if (ret < 0) return ret; par->col_start = col_start; par->col_end = col_end; return 0; } static int ssd1307fb_set_page_range(struct ssd1307fb_par *par, u8 page_start, u8 pages) { u8 page_end = page_start + pages - 1; int ret; if (page_start == par->page_start && page_end == par->page_end) return 0; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PAGE_RANGE); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, page_start); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, page_end); if (ret < 0) return ret; par->page_start = page_start; par->page_end = page_end; return 0; } static int ssd1307fb_update_rect(struct ssd1307fb_par *par, unsigned int x, unsigned int y, unsigned int width, unsigned int height) { struct ssd1307fb_array *array; u8 *vmem = par->info->screen_buffer; unsigned int line_length = par->info->fix.line_length; unsigned int pages = DIV_ROUND_UP(y % 8 + height, 8); u32 array_idx = 0; int ret, i, j, k; array = ssd1307fb_alloc_array(width * pages, SSD1307FB_DATA); if (!array) return -ENOMEM; /* * The screen is divided in pages, each having a height of 8 * pixels, and the width of the screen. When sending a byte of * data to the controller, it gives the 8 bits for the current * column. I.e, the first byte are the 8 bits of the first * column, then the 8 bits for the second column, etc. * * * Representation of the screen, assuming it is 5 bits * wide. Each letter-number combination is a bit that controls * one pixel. * * A0 A1 A2 A3 A4 * B0 B1 B2 B3 B4 * C0 C1 C2 C3 C4 * D0 D1 D2 D3 D4 * E0 E1 E2 E3 E4 * F0 F1 F2 F3 F4 * G0 G1 G2 G3 G4 * H0 H1 H2 H3 H4 * * If you want to update this screen, you need to send 5 bytes: * (1) A0 B0 C0 D0 E0 F0 G0 H0 * (2) A1 B1 C1 D1 E1 F1 G1 H1 * (3) A2 B2 C2 D2 E2 F2 G2 H2 * (4) A3 B3 C3 D3 E3 F3 G3 H3 * (5) A4 B4 C4 D4 E4 F4 G4 H4 */ ret = ssd1307fb_set_col_range(par, par->col_offset + x, width); if (ret < 0) goto out_free; ret = ssd1307fb_set_page_range(par, par->page_offset + y / 8, pages); if (ret < 0) goto out_free; for (i = y / 8; i < y / 8 + pages; i++) { int m = 8; /* Last page may be partial */ if (8 * (i + 1) > par->height) m = par->height % 8; for (j = x; j < x + width; j++) { u8 data = 0; for (k = 0; k < m; k++) { u8 byte = vmem[(8 * i + k) * line_length + j / 8]; u8 bit = (byte >> (j % 8)) & 1; data |= bit << k; } array->data[array_idx++] = data; } } ret = ssd1307fb_write_array(par->client, array, width * pages); out_free: kfree(array); return ret; } static int ssd1307fb_update_display(struct ssd1307fb_par *par) { return ssd1307fb_update_rect(par, 0, 0, par->width, par->height); } static int ssd1307fb_blank(int blank_mode, struct fb_info *info) { struct ssd1307fb_par *par = info->par; if (blank_mode != FB_BLANK_UNBLANK) return ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_OFF); else return ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_ON); } static void ssd1307fb_defio_damage_range(struct fb_info *info, off_t off, size_t len) { struct ssd1307fb_par *par = info->par; ssd1307fb_update_display(par); } static void ssd1307fb_defio_damage_area(struct fb_info *info, u32 x, u32 y, u32 width, u32 height) { struct ssd1307fb_par *par = info->par; ssd1307fb_update_rect(par, x, y, width, height); } FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(ssd1307fb, ssd1307fb_defio_damage_range, ssd1307fb_defio_damage_area) static const struct fb_ops ssd1307fb_ops = { .owner = THIS_MODULE, FB_DEFAULT_DEFERRED_OPS(ssd1307fb), .fb_blank = ssd1307fb_blank, }; static void ssd1307fb_deferred_io(struct fb_info *info, struct list_head *pagereflist) { ssd1307fb_update_display(info->par); } static int ssd1307fb_init(struct ssd1307fb_par *par) { struct pwm_state pwmstate; int ret; u32 precharge, dclk, com_invdir, compins; if (par->device_info->need_pwm) { par->pwm = pwm_get(&par->client->dev, NULL); if (IS_ERR(par->pwm)) { dev_err(&par->client->dev, "Could not get PWM from device tree!\n"); return PTR_ERR(par->pwm); } pwm_init_state(par->pwm, &pwmstate); pwm_set_relative_duty_cycle(&pwmstate, 50, 100); pwm_apply_might_sleep(par->pwm, &pwmstate); /* Enable the PWM */ pwm_enable(par->pwm); dev_dbg(&par->client->dev, "Using PWM %s with a %lluns period.\n", par->pwm->label, pwm_get_period(par->pwm)); } /* Set initial contrast */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_CONTRAST); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, par->contrast); if (ret < 0) return ret; /* Set segment re-map */ if (par->seg_remap) { ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SEG_REMAP_ON); if (ret < 0) return ret; } /* Set COM direction */ com_invdir = 0xc0 | par->com_invdir << 3; ret = ssd1307fb_write_cmd(par->client, com_invdir); if (ret < 0) return ret; /* Set multiplex ratio value */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_MULTIPLEX_RATIO); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, par->height - 1); if (ret < 0) return ret; /* set display offset value */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_DISPLAY_OFFSET); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, par->com_offset); if (ret < 0) return ret; /* Set clock frequency */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_CLOCK_FREQ); if (ret < 0) return ret; dclk = ((par->dclk_div - 1) & 0xf) | (par->dclk_frq & 0xf) << 4; ret = ssd1307fb_write_cmd(par->client, dclk); if (ret < 0) return ret; /* Set Area Color Mode ON/OFF & Low Power Display Mode */ if (par->area_color_enable || par->low_power) { u32 mode; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_AREA_COLOR_MODE); if (ret < 0) return ret; mode = (par->area_color_enable ? 0x30 : 0) | (par->low_power ? 5 : 0); ret = ssd1307fb_write_cmd(par->client, mode); if (ret < 0) return ret; } /* Set precharge period in number of ticks from the internal clock */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PRECHARGE_PERIOD); if (ret < 0) return ret; precharge = (par->prechargep1 & 0xf) | (par->prechargep2 & 0xf) << 4; ret = ssd1307fb_write_cmd(par->client, precharge); if (ret < 0) return ret; /* Set COM pins configuration */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COM_PINS_CONFIG); if (ret < 0) return ret; compins = 0x02 | !par->com_seq << 4 | par->com_lrremap << 5; ret = ssd1307fb_write_cmd(par->client, compins); if (ret < 0) return ret; /* Set VCOMH */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_VCOMH); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, par->vcomh); if (ret < 0) return ret; /* Turn on the DC-DC Charge Pump */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_CHARGE_PUMP); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, BIT(4) | (par->device_info->need_chargepump ? BIT(2) : 0)); if (ret < 0) return ret; /* Set lookup table */ if (par->lookup_table_set) { int i; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_LOOKUP_TABLE); if (ret < 0) return ret; for (i = 0; i < ARRAY_SIZE(par->lookup_table); ++i) { u8 val = par->lookup_table[i]; if (val < 31 || val > 63) dev_warn(&par->client->dev, "lookup table index %d value out of range 31 <= %d <= 63\n", i, val); ret = ssd1307fb_write_cmd(par->client, val); if (ret < 0) return ret; } } /* Switch to horizontal addressing mode */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_ADDRESS_MODE); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_ADDRESS_MODE_HORIZONTAL); if (ret < 0) return ret; /* Clear the screen */ ret = ssd1307fb_update_display(par); if (ret < 0) return ret; /* Turn on the display */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_ON); if (ret < 0) return ret; return 0; } static int ssd1307fb_update_bl(struct backlight_device *bdev) { struct ssd1307fb_par *par = bl_get_data(bdev); int ret; int brightness = bdev->props.brightness; par->contrast = brightness; ret = ssd1307fb_write_cmd(par->client, SSD1307FB_CONTRAST); if (ret < 0) return ret; ret = ssd1307fb_write_cmd(par->client, par->contrast); if (ret < 0) return ret; return 0; } static int ssd1307fb_get_brightness(struct backlight_device *bdev) { struct ssd1307fb_par *par = bl_get_data(bdev); return par->contrast; } static const struct backlight_ops ssd1307fb_bl_ops = { .options = BL_CORE_SUSPENDRESUME, .update_status = ssd1307fb_update_bl, .get_brightness = ssd1307fb_get_brightness, }; static struct ssd1307fb_deviceinfo ssd1307fb_ssd1305_deviceinfo = { .default_vcomh = 0x34, .default_dclk_div = 1, .default_dclk_frq = 7, }; static struct ssd1307fb_deviceinfo ssd1307fb_ssd1306_deviceinfo = { .default_vcomh = 0x20, .default_dclk_div = 1, .default_dclk_frq = 8, .need_chargepump = 1, }; static struct ssd1307fb_deviceinfo ssd1307fb_ssd1307_deviceinfo = { .default_vcomh = 0x20, .default_dclk_div = 2, .default_dclk_frq = 12, .need_pwm = 1, }; static struct ssd1307fb_deviceinfo ssd1307fb_ssd1309_deviceinfo = { .default_vcomh = 0x34, .default_dclk_div = 1, .default_dclk_frq = 10, }; static const struct of_device_id ssd1307fb_of_match[] = { { .compatible = "solomon,ssd1305fb-i2c", .data = (void *)&ssd1307fb_ssd1305_deviceinfo, }, { .compatible = "solomon,ssd1306fb-i2c", .data = (void *)&ssd1307fb_ssd1306_deviceinfo, }, { .compatible = "solomon,ssd1307fb-i2c", .data = (void *)&ssd1307fb_ssd1307_deviceinfo, }, { .compatible = "solomon,ssd1309fb-i2c", .data = (void *)&ssd1307fb_ssd1309_deviceinfo, }, {}, }; MODULE_DEVICE_TABLE(of, ssd1307fb_of_match); static int ssd1307fb_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct backlight_device *bl; struct fb_info *info; struct fb_deferred_io *ssd1307fb_defio; u32 vmem_size; struct ssd1307fb_par *par; void *vmem; int ret; info = framebuffer_alloc(sizeof(struct ssd1307fb_par), dev); if (!info) return -ENOMEM; par = info->par; par->info = info; par->client = client; par->device_info = device_get_match_data(dev); par->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(par->reset)) { ret = dev_err_probe(dev, PTR_ERR(par->reset), "failed to get reset gpio\n"); goto fb_alloc_error; } par->vbat_reg = devm_regulator_get_optional(dev, "vbat"); if (IS_ERR(par->vbat_reg)) { ret = PTR_ERR(par->vbat_reg); if (ret == -ENODEV) { par->vbat_reg = NULL; } else { dev_err_probe(dev, ret, "failed to get VBAT regulator\n"); goto fb_alloc_error; } } if (device_property_read_u32(dev, "solomon,width", &par->width)) par->width = 96; if (device_property_read_u32(dev, "solomon,height", &par->height)) par->height = 16; if (device_property_read_u32(dev, "solomon,page-offset", &par->page_offset)) par->page_offset = 1; if (device_property_read_u32(dev, "solomon,col-offset", &par->col_offset)) par->col_offset = 0; if (device_property_read_u32(dev, "solomon,com-offset", &par->com_offset)) par->com_offset = 0; if (device_property_read_u32(dev, "solomon,prechargep1", &par->prechargep1)) par->prechargep1 = 2; if (device_property_read_u32(dev, "solomon,prechargep2", &par->prechargep2)) par->prechargep2 = 2; if (!device_property_read_u8_array(dev, "solomon,lookup-table", par->lookup_table, ARRAY_SIZE(par->lookup_table))) par->lookup_table_set = 1; par->seg_remap = !device_property_read_bool(dev, "solomon,segment-no-remap"); par->com_seq = device_property_read_bool(dev, "solomon,com-seq"); par->com_lrremap = device_property_read_bool(dev, "solomon,com-lrremap"); par->com_invdir = device_property_read_bool(dev, "solomon,com-invdir"); par->area_color_enable = device_property_read_bool(dev, "solomon,area-color-enable"); par->low_power = device_property_read_bool(dev, "solomon,low-power"); par->contrast = 127; par->vcomh = par->device_info->default_vcomh; /* Setup display timing */ if (device_property_read_u32(dev, "solomon,dclk-div", &par->dclk_div)) par->dclk_div = par->device_info->default_dclk_div; if (device_property_read_u32(dev, "solomon,dclk-frq", &par->dclk_frq)) par->dclk_frq = par->device_info->default_dclk_frq; vmem_size = DIV_ROUND_UP(par->width, 8) * par->height; vmem = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(vmem_size)); if (!vmem) { dev_err(dev, "Couldn't allocate graphical memory.\n"); ret = -ENOMEM; goto fb_alloc_error; } ssd1307fb_defio = devm_kzalloc(dev, sizeof(*ssd1307fb_defio), GFP_KERNEL); if (!ssd1307fb_defio) { dev_err(dev, "Couldn't allocate deferred io.\n"); ret = -ENOMEM; goto fb_alloc_error; } ssd1307fb_defio->delay = HZ / refreshrate; ssd1307fb_defio->deferred_io = ssd1307fb_deferred_io; info->fbops = &ssd1307fb_ops; info->fix = ssd1307fb_fix; info->fix.line_length = DIV_ROUND_UP(par->width, 8); info->fbdefio = ssd1307fb_defio; info->var = ssd1307fb_var; info->var.xres = par->width; info->var.xres_virtual = par->width; info->var.yres = par->height; info->var.yres_virtual = par->height; info->screen_buffer = vmem; info->fix.smem_start = __pa(vmem); info->fix.smem_len = vmem_size; fb_deferred_io_init(info); i2c_set_clientdata(client, info); if (par->reset) { /* Reset the screen */ gpiod_set_value_cansleep(par->reset, 1); udelay(4); gpiod_set_value_cansleep(par->reset, 0); udelay(4); } if (par->vbat_reg) { ret = regulator_enable(par->vbat_reg); if (ret) { dev_err(dev, "failed to enable VBAT: %d\n", ret); goto reset_oled_error; } } ret = ssd1307fb_init(par); if (ret) goto regulator_enable_error; bl = backlight_device_register("ssd1307fb-bl", dev, par, &ssd1307fb_bl_ops, NULL); if (IS_ERR(bl)) { ret = PTR_ERR(bl); dev_err(dev, "unable to register backlight device: %d\n", ret); goto panel_init_error; } info->bl_dev = bl; ret = register_framebuffer(info); if (ret) { dev_err(dev, "Couldn't register the framebuffer\n"); goto fb_init_error; } bl->props.brightness = par->contrast; bl->props.max_brightness = MAX_CONTRAST; dev_info(dev, "fb%d: %s framebuffer device registered, using %d bytes of video memory\n", info->node, info->fix.id, vmem_size); return 0; fb_init_error: backlight_device_unregister(bl); panel_init_error: pwm_disable(par->pwm); pwm_put(par->pwm); regulator_enable_error: if (par->vbat_reg) regulator_disable(par->vbat_reg); reset_oled_error: fb_deferred_io_cleanup(info); fb_alloc_error: framebuffer_release(info); return ret; } static void ssd1307fb_remove(struct i2c_client *client) { struct fb_info *info = i2c_get_clientdata(client); struct ssd1307fb_par *par = info->par; ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_OFF); backlight_device_unregister(info->bl_dev); unregister_framebuffer(info); pwm_disable(par->pwm); pwm_put(par->pwm); if (par->vbat_reg) regulator_disable(par->vbat_reg); fb_deferred_io_cleanup(info); __free_pages(__va(info->fix.smem_start), get_order(info->fix.smem_len)); framebuffer_release(info); } static const struct i2c_device_id ssd1307fb_i2c_id[] = { { "ssd1305fb", 0 }, { "ssd1306fb", 0 }, { "ssd1307fb", 0 }, { "ssd1309fb", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, ssd1307fb_i2c_id); static struct i2c_driver ssd1307fb_driver = { .probe = ssd1307fb_probe, .remove = ssd1307fb_remove, .id_table = ssd1307fb_i2c_id, .driver = { .name = "ssd1307fb", .of_match_table = ssd1307fb_of_match, }, }; module_i2c_driver(ssd1307fb_driver); MODULE_DESCRIPTION("FB driver for the Solomon SSD1307 OLED controller"); MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>"); MODULE_LICENSE("GPL");
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