18c9108d0SLars Poeschel // SPDX-License-Identifier: GPL-2.0 28c9108d0SLars Poeschel /* 3c726031aSAndy Shevchenko * Console driver for LCD2S 4x20 character displays connected through i2c. 4c726031aSAndy Shevchenko * The display also has a SPI interface, but the driver does not support 58c9108d0SLars Poeschel * this yet. 68c9108d0SLars Poeschel * 7c726031aSAndy Shevchenko * This is a driver allowing you to use a LCD2S 4x20 from Modtronix 88c9108d0SLars Poeschel * engineering as auxdisplay character device. 98c9108d0SLars Poeschel * 108c9108d0SLars Poeschel * (C) 2019 by Lemonage Software GmbH 118c9108d0SLars Poeschel * Author: Lars Pöschel <poeschel@lemonage.de> 128c9108d0SLars Poeschel * All rights reserved. 138c9108d0SLars Poeschel */ 148c9108d0SLars Poeschel #include <linux/kernel.h> 1544bb3f03SAndy Shevchenko #include <linux/mod_devicetable.h> 168c9108d0SLars Poeschel #include <linux/module.h> 1744bb3f03SAndy Shevchenko #include <linux/property.h> 188c9108d0SLars Poeschel #include <linux/slab.h> 198c9108d0SLars Poeschel #include <linux/i2c.h> 208c9108d0SLars Poeschel #include <linux/delay.h> 218c9108d0SLars Poeschel 228c9108d0SLars Poeschel #include "charlcd.h" 238c9108d0SLars Poeschel 248c9108d0SLars Poeschel #define LCD2S_CMD_CUR_MOVES_FWD 0x09 258c9108d0SLars Poeschel #define LCD2S_CMD_CUR_BLINK_OFF 0x10 268c9108d0SLars Poeschel #define LCD2S_CMD_CUR_UL_OFF 0x11 278c9108d0SLars Poeschel #define LCD2S_CMD_DISPLAY_OFF 0x12 288c9108d0SLars Poeschel #define LCD2S_CMD_CUR_BLINK_ON 0x18 298c9108d0SLars Poeschel #define LCD2S_CMD_CUR_UL_ON 0x19 308c9108d0SLars Poeschel #define LCD2S_CMD_DISPLAY_ON 0x1a 318c9108d0SLars Poeschel #define LCD2S_CMD_BACKLIGHT_OFF 0x20 328c9108d0SLars Poeschel #define LCD2S_CMD_BACKLIGHT_ON 0x28 338c9108d0SLars Poeschel #define LCD2S_CMD_WRITE 0x80 348c9108d0SLars Poeschel #define LCD2S_CMD_MOV_CUR_RIGHT 0x83 358c9108d0SLars Poeschel #define LCD2S_CMD_MOV_CUR_LEFT 0x84 368c9108d0SLars Poeschel #define LCD2S_CMD_SHIFT_RIGHT 0x85 378c9108d0SLars Poeschel #define LCD2S_CMD_SHIFT_LEFT 0x86 388c9108d0SLars Poeschel #define LCD2S_CMD_SHIFT_UP 0x87 398c9108d0SLars Poeschel #define LCD2S_CMD_SHIFT_DOWN 0x88 408c9108d0SLars Poeschel #define LCD2S_CMD_CUR_ADDR 0x89 418c9108d0SLars Poeschel #define LCD2S_CMD_CUR_POS 0x8a 428c9108d0SLars Poeschel #define LCD2S_CMD_CUR_RESET 0x8b 438c9108d0SLars Poeschel #define LCD2S_CMD_CLEAR 0x8c 448c9108d0SLars Poeschel #define LCD2S_CMD_DEF_CUSTOM_CHAR 0x92 458c9108d0SLars Poeschel #define LCD2S_CMD_READ_STATUS 0xd0 468c9108d0SLars Poeschel 478c9108d0SLars Poeschel #define LCD2S_CHARACTER_SIZE 8 488c9108d0SLars Poeschel 498c9108d0SLars Poeschel #define LCD2S_STATUS_BUF_MASK 0x7f 508c9108d0SLars Poeschel 518c9108d0SLars Poeschel struct lcd2s_data { 528c9108d0SLars Poeschel struct i2c_client *i2c; 538c9108d0SLars Poeschel struct charlcd *charlcd; 548c9108d0SLars Poeschel }; 558c9108d0SLars Poeschel 568c9108d0SLars Poeschel static s32 lcd2s_wait_buf_free(const struct i2c_client *client, int count) 578c9108d0SLars Poeschel { 588c9108d0SLars Poeschel s32 status; 598c9108d0SLars Poeschel 608c9108d0SLars Poeschel status = i2c_smbus_read_byte_data(client, LCD2S_CMD_READ_STATUS); 618c9108d0SLars Poeschel if (status < 0) 628c9108d0SLars Poeschel return status; 638c9108d0SLars Poeschel 648c9108d0SLars Poeschel while ((status & LCD2S_STATUS_BUF_MASK) < count) { 658c9108d0SLars Poeschel mdelay(1); 668c9108d0SLars Poeschel status = i2c_smbus_read_byte_data(client, 678c9108d0SLars Poeschel LCD2S_CMD_READ_STATUS); 688c9108d0SLars Poeschel if (status < 0) 698c9108d0SLars Poeschel return status; 708c9108d0SLars Poeschel } 718c9108d0SLars Poeschel return 0; 728c9108d0SLars Poeschel } 738c9108d0SLars Poeschel 748c9108d0SLars Poeschel static int lcd2s_i2c_master_send(const struct i2c_client *client, 758c9108d0SLars Poeschel const char *buf, int count) 768c9108d0SLars Poeschel { 778c9108d0SLars Poeschel s32 status; 788c9108d0SLars Poeschel 798c9108d0SLars Poeschel status = lcd2s_wait_buf_free(client, count); 808c9108d0SLars Poeschel if (status < 0) 818c9108d0SLars Poeschel return status; 828c9108d0SLars Poeschel 838c9108d0SLars Poeschel return i2c_master_send(client, buf, count); 848c9108d0SLars Poeschel } 858c9108d0SLars Poeschel 868c9108d0SLars Poeschel static int lcd2s_i2c_smbus_write_byte(const struct i2c_client *client, u8 value) 878c9108d0SLars Poeschel { 888c9108d0SLars Poeschel s32 status; 898c9108d0SLars Poeschel 908c9108d0SLars Poeschel status = lcd2s_wait_buf_free(client, 1); 918c9108d0SLars Poeschel if (status < 0) 928c9108d0SLars Poeschel return status; 938c9108d0SLars Poeschel 948c9108d0SLars Poeschel return i2c_smbus_write_byte(client, value); 958c9108d0SLars Poeschel } 968c9108d0SLars Poeschel 978c9108d0SLars Poeschel static int lcd2s_print(struct charlcd *lcd, int c) 988c9108d0SLars Poeschel { 998c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1008c9108d0SLars Poeschel u8 buf[2] = { LCD2S_CMD_WRITE, c }; 1018c9108d0SLars Poeschel 1028c9108d0SLars Poeschel lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf)); 1038c9108d0SLars Poeschel return 0; 1048c9108d0SLars Poeschel } 1058c9108d0SLars Poeschel 1068c9108d0SLars Poeschel static int lcd2s_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y) 1078c9108d0SLars Poeschel { 1088c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1098c9108d0SLars Poeschel u8 buf[] = { LCD2S_CMD_CUR_POS, y + 1, x + 1}; 1108c9108d0SLars Poeschel 1118c9108d0SLars Poeschel lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf)); 1128c9108d0SLars Poeschel 1138c9108d0SLars Poeschel return 0; 1148c9108d0SLars Poeschel } 1158c9108d0SLars Poeschel 1168c9108d0SLars Poeschel static int lcd2s_home(struct charlcd *lcd) 1178c9108d0SLars Poeschel { 1188c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1198c9108d0SLars Poeschel 1208c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_RESET); 1218c9108d0SLars Poeschel return 0; 1228c9108d0SLars Poeschel } 1238c9108d0SLars Poeschel 1248c9108d0SLars Poeschel static int lcd2s_init_display(struct charlcd *lcd) 1258c9108d0SLars Poeschel { 1268c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1278c9108d0SLars Poeschel 1288c9108d0SLars Poeschel /* turn everything off, but display on */ 1298c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_DISPLAY_ON); 1308c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_BACKLIGHT_OFF); 1318c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_MOVES_FWD); 1328c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_BLINK_OFF); 1338c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_UL_OFF); 1348c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CLEAR); 1358c9108d0SLars Poeschel 1368c9108d0SLars Poeschel return 0; 1378c9108d0SLars Poeschel } 1388c9108d0SLars Poeschel 1398c9108d0SLars Poeschel static int lcd2s_shift_cursor(struct charlcd *lcd, enum charlcd_shift_dir dir) 1408c9108d0SLars Poeschel { 1418c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1428c9108d0SLars Poeschel 1438c9108d0SLars Poeschel if (dir == CHARLCD_SHIFT_LEFT) 1448c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_MOV_CUR_LEFT); 1458c9108d0SLars Poeschel else 1468c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_MOV_CUR_RIGHT); 1478c9108d0SLars Poeschel 1488c9108d0SLars Poeschel return 0; 1498c9108d0SLars Poeschel } 1508c9108d0SLars Poeschel 1518c9108d0SLars Poeschel static int lcd2s_shift_display(struct charlcd *lcd, enum charlcd_shift_dir dir) 1528c9108d0SLars Poeschel { 1538c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1548c9108d0SLars Poeschel 1558c9108d0SLars Poeschel if (dir == CHARLCD_SHIFT_LEFT) 1568c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_SHIFT_LEFT); 1578c9108d0SLars Poeschel else 1588c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_SHIFT_RIGHT); 1598c9108d0SLars Poeschel 1608c9108d0SLars Poeschel return 0; 1618c9108d0SLars Poeschel } 1628c9108d0SLars Poeschel 1638c9108d0SLars Poeschel static void lcd2s_backlight(struct charlcd *lcd, enum charlcd_onoff on) 1648c9108d0SLars Poeschel { 1658c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1668c9108d0SLars Poeschel 1678c9108d0SLars Poeschel if (on) 1688c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_BACKLIGHT_ON); 1698c9108d0SLars Poeschel else 1708c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_BACKLIGHT_OFF); 1718c9108d0SLars Poeschel } 1728c9108d0SLars Poeschel 1738c9108d0SLars Poeschel static int lcd2s_display(struct charlcd *lcd, enum charlcd_onoff on) 1748c9108d0SLars Poeschel { 1758c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1768c9108d0SLars Poeschel 1778c9108d0SLars Poeschel if (on) 1788c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_DISPLAY_ON); 1798c9108d0SLars Poeschel else 1808c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_DISPLAY_OFF); 1818c9108d0SLars Poeschel 1828c9108d0SLars Poeschel return 0; 1838c9108d0SLars Poeschel } 1848c9108d0SLars Poeschel 1858c9108d0SLars Poeschel static int lcd2s_cursor(struct charlcd *lcd, enum charlcd_onoff on) 1868c9108d0SLars Poeschel { 1878c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 1888c9108d0SLars Poeschel 1898c9108d0SLars Poeschel if (on) 1908c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_UL_ON); 1918c9108d0SLars Poeschel else 1928c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_UL_OFF); 1938c9108d0SLars Poeschel 1948c9108d0SLars Poeschel return 0; 1958c9108d0SLars Poeschel } 1968c9108d0SLars Poeschel 1978c9108d0SLars Poeschel static int lcd2s_blink(struct charlcd *lcd, enum charlcd_onoff on) 1988c9108d0SLars Poeschel { 1998c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 2008c9108d0SLars Poeschel 2018c9108d0SLars Poeschel if (on) 2028c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_BLINK_ON); 2038c9108d0SLars Poeschel else 2048c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CUR_BLINK_OFF); 2058c9108d0SLars Poeschel 2068c9108d0SLars Poeschel return 0; 2078c9108d0SLars Poeschel } 2088c9108d0SLars Poeschel 2098c9108d0SLars Poeschel static int lcd2s_fontsize(struct charlcd *lcd, enum charlcd_fontsize size) 2108c9108d0SLars Poeschel { 2118c9108d0SLars Poeschel return 0; 2128c9108d0SLars Poeschel } 2138c9108d0SLars Poeschel 2148c9108d0SLars Poeschel static int lcd2s_lines(struct charlcd *lcd, enum charlcd_lines lines) 2158c9108d0SLars Poeschel { 2168c9108d0SLars Poeschel return 0; 2178c9108d0SLars Poeschel } 2188c9108d0SLars Poeschel 219c726031aSAndy Shevchenko /* 220c726031aSAndy Shevchenko * Generator: LGcxxxxx...xx; must have <c> between '0' and '7', 221c726031aSAndy Shevchenko * representing the numerical ASCII code of the redefined character, 222c726031aSAndy Shevchenko * and <xx...xx> a sequence of 16 hex digits representing 8 bytes 223c726031aSAndy Shevchenko * for each character. Most LCDs will only use 5 lower bits of 224c726031aSAndy Shevchenko * the 7 first bytes. 225c726031aSAndy Shevchenko */ 2268c9108d0SLars Poeschel static int lcd2s_redefine_char(struct charlcd *lcd, char *esc) 2278c9108d0SLars Poeschel { 2288c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 2298c9108d0SLars Poeschel u8 buf[LCD2S_CHARACTER_SIZE + 2] = { LCD2S_CMD_DEF_CUSTOM_CHAR }; 2308c9108d0SLars Poeschel u8 value; 2318c9108d0SLars Poeschel int shift, i; 2328c9108d0SLars Poeschel 2338c9108d0SLars Poeschel if (!strchr(esc, ';')) 2348c9108d0SLars Poeschel return 0; 2358c9108d0SLars Poeschel 2368c9108d0SLars Poeschel esc++; 2378c9108d0SLars Poeschel 2388c9108d0SLars Poeschel buf[1] = *(esc++) - '0'; 2398c9108d0SLars Poeschel if (buf[1] > 7) 2408c9108d0SLars Poeschel return 1; 2418c9108d0SLars Poeschel 2424424c35eSAndy Shevchenko i = 2; 2438c9108d0SLars Poeschel shift = 0; 2448c9108d0SLars Poeschel value = 0; 2458c9108d0SLars Poeschel while (*esc && i < LCD2S_CHARACTER_SIZE + 2) { 2468c9108d0SLars Poeschel int half; 2478c9108d0SLars Poeschel 2488c9108d0SLars Poeschel shift ^= 4; 2498c9108d0SLars Poeschel half = hex_to_bin(*esc++); 2508c9108d0SLars Poeschel if (half < 0) 2518c9108d0SLars Poeschel continue; 2528c9108d0SLars Poeschel 2538c9108d0SLars Poeschel value |= half << shift; 2548c9108d0SLars Poeschel if (shift == 0) { 2558c9108d0SLars Poeschel buf[i++] = value; 2568c9108d0SLars Poeschel value = 0; 2578c9108d0SLars Poeschel } 2588c9108d0SLars Poeschel } 2598c9108d0SLars Poeschel 2608c9108d0SLars Poeschel lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf)); 2618c9108d0SLars Poeschel return 1; 2628c9108d0SLars Poeschel } 2638c9108d0SLars Poeschel 2648c9108d0SLars Poeschel static int lcd2s_clear_display(struct charlcd *lcd) 2658c9108d0SLars Poeschel { 2668c9108d0SLars Poeschel struct lcd2s_data *lcd2s = lcd->drvdata; 2678c9108d0SLars Poeschel 2688c9108d0SLars Poeschel /* This implicitly sets cursor to first row and column */ 2698c9108d0SLars Poeschel lcd2s_i2c_smbus_write_byte(lcd2s->i2c, LCD2S_CMD_CLEAR); 2708c9108d0SLars Poeschel return 0; 2718c9108d0SLars Poeschel } 2728c9108d0SLars Poeschel 2738c9108d0SLars Poeschel static const struct charlcd_ops lcd2s_ops = { 2748c9108d0SLars Poeschel .print = lcd2s_print, 2758c9108d0SLars Poeschel .backlight = lcd2s_backlight, 2768c9108d0SLars Poeschel .gotoxy = lcd2s_gotoxy, 2778c9108d0SLars Poeschel .home = lcd2s_home, 2788c9108d0SLars Poeschel .clear_display = lcd2s_clear_display, 2798c9108d0SLars Poeschel .init_display = lcd2s_init_display, 2808c9108d0SLars Poeschel .shift_cursor = lcd2s_shift_cursor, 2818c9108d0SLars Poeschel .shift_display = lcd2s_shift_display, 2828c9108d0SLars Poeschel .display = lcd2s_display, 2838c9108d0SLars Poeschel .cursor = lcd2s_cursor, 2848c9108d0SLars Poeschel .blink = lcd2s_blink, 2858c9108d0SLars Poeschel .fontsize = lcd2s_fontsize, 2868c9108d0SLars Poeschel .lines = lcd2s_lines, 2878c9108d0SLars Poeschel .redefine_char = lcd2s_redefine_char, 2888c9108d0SLars Poeschel }; 2898c9108d0SLars Poeschel 2908c9108d0SLars Poeschel static int lcd2s_i2c_probe(struct i2c_client *i2c, 2918c9108d0SLars Poeschel const struct i2c_device_id *id) 2928c9108d0SLars Poeschel { 2938c9108d0SLars Poeschel struct charlcd *lcd; 2948c9108d0SLars Poeschel struct lcd2s_data *lcd2s; 2958c9108d0SLars Poeschel int err; 2968c9108d0SLars Poeschel 2978c9108d0SLars Poeschel if (!i2c_check_functionality(i2c->adapter, 2988c9108d0SLars Poeschel I2C_FUNC_SMBUS_WRITE_BYTE_DATA | 2998c9108d0SLars Poeschel I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)) 3008c9108d0SLars Poeschel return -EIO; 3018c9108d0SLars Poeschel 302898c0a15SAndy Shevchenko lcd2s = devm_kzalloc(&i2c->dev, sizeof(*lcd2s), GFP_KERNEL); 303898c0a15SAndy Shevchenko if (!lcd2s) 304898c0a15SAndy Shevchenko return -ENOMEM; 305898c0a15SAndy Shevchenko 3068c9108d0SLars Poeschel /* Test, if the display is responding */ 3078c9108d0SLars Poeschel err = lcd2s_i2c_smbus_write_byte(i2c, LCD2S_CMD_DISPLAY_OFF); 3088c9108d0SLars Poeschel if (err < 0) 3098c9108d0SLars Poeschel return err; 3108c9108d0SLars Poeschel 3118c9108d0SLars Poeschel lcd = charlcd_alloc(); 3128c9108d0SLars Poeschel if (!lcd) 3138c9108d0SLars Poeschel return -ENOMEM; 3148c9108d0SLars Poeschel 3158c9108d0SLars Poeschel lcd->drvdata = lcd2s; 3168c9108d0SLars Poeschel lcd2s->i2c = i2c; 3178c9108d0SLars Poeschel lcd2s->charlcd = lcd; 3188c9108d0SLars Poeschel 3198c9108d0SLars Poeschel /* Required properties */ 3208c9108d0SLars Poeschel err = device_property_read_u32(&i2c->dev, "display-height-chars", 3218c9108d0SLars Poeschel &lcd->height); 3228c9108d0SLars Poeschel if (err) 323898c0a15SAndy Shevchenko goto fail1; 3248c9108d0SLars Poeschel 3258c9108d0SLars Poeschel err = device_property_read_u32(&i2c->dev, "display-width-chars", 3268c9108d0SLars Poeschel &lcd->width); 3278c9108d0SLars Poeschel if (err) 328898c0a15SAndy Shevchenko goto fail1; 3298c9108d0SLars Poeschel 3308c9108d0SLars Poeschel lcd->ops = &lcd2s_ops; 3318c9108d0SLars Poeschel 3328c9108d0SLars Poeschel err = charlcd_register(lcd2s->charlcd); 3338c9108d0SLars Poeschel if (err) 334898c0a15SAndy Shevchenko goto fail1; 3358c9108d0SLars Poeschel 3368c9108d0SLars Poeschel i2c_set_clientdata(i2c, lcd2s); 3378c9108d0SLars Poeschel return 0; 3388c9108d0SLars Poeschel 3398c9108d0SLars Poeschel fail1: 3409ed331f8SAndy Shevchenko charlcd_free(lcd2s->charlcd); 3418c9108d0SLars Poeschel return err; 3428c9108d0SLars Poeschel } 3438c9108d0SLars Poeschel 3448c9108d0SLars Poeschel static int lcd2s_i2c_remove(struct i2c_client *i2c) 3458c9108d0SLars Poeschel { 3468c9108d0SLars Poeschel struct lcd2s_data *lcd2s = i2c_get_clientdata(i2c); 3478c9108d0SLars Poeschel 3488c9108d0SLars Poeschel charlcd_unregister(lcd2s->charlcd); 3499ed331f8SAndy Shevchenko charlcd_free(lcd2s->charlcd); 3508c9108d0SLars Poeschel return 0; 3518c9108d0SLars Poeschel } 3528c9108d0SLars Poeschel 3538c9108d0SLars Poeschel static const struct i2c_device_id lcd2s_i2c_id[] = { 3548c9108d0SLars Poeschel { "lcd2s", 0 }, 3558c9108d0SLars Poeschel { } 3568c9108d0SLars Poeschel }; 3578c9108d0SLars Poeschel MODULE_DEVICE_TABLE(i2c, lcd2s_i2c_id); 3588c9108d0SLars Poeschel 3598c9108d0SLars Poeschel static const struct of_device_id lcd2s_of_table[] = { 3608c9108d0SLars Poeschel { .compatible = "modtronix,lcd2s" }, 3618c9108d0SLars Poeschel { } 3628c9108d0SLars Poeschel }; 3638c9108d0SLars Poeschel MODULE_DEVICE_TABLE(of, lcd2s_of_table); 3648c9108d0SLars Poeschel 3658c9108d0SLars Poeschel static struct i2c_driver lcd2s_i2c_driver = { 3668c9108d0SLars Poeschel .driver = { 3678c9108d0SLars Poeschel .name = "lcd2s", 36844bb3f03SAndy Shevchenko .of_match_table = lcd2s_of_table, 3698c9108d0SLars Poeschel }, 3708c9108d0SLars Poeschel .probe = lcd2s_i2c_probe, 3718c9108d0SLars Poeschel .remove = lcd2s_i2c_remove, 3728c9108d0SLars Poeschel .id_table = lcd2s_i2c_id, 3738c9108d0SLars Poeschel }; 374*f15c3deaSAndy Shevchenko module_i2c_driver(lcd2s_i2c_driver); 3758c9108d0SLars Poeschel 3768c9108d0SLars Poeschel MODULE_DESCRIPTION("LCD2S character display driver"); 3778c9108d0SLars Poeschel MODULE_AUTHOR("Lars Poeschel"); 3788c9108d0SLars Poeschel MODULE_LICENSE("GPL"); 379