^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * w1_ds250x.c - w1 family 09/0b/89/91 (DS250x) driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/crc16.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/w1.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/nvmem-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define W1_DS2501_UNW_FAMILY 0x91
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define W1_DS2501_SIZE 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define W1_DS2502_FAMILY 0x09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define W1_DS2502_UNW_FAMILY 0x89
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define W1_DS2502_SIZE 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define W1_DS2505_FAMILY 0x0b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define W1_DS2505_SIZE 2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define W1_PAGE_SIZE 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define W1_EXT_READ_MEMORY 0xA5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define W1_READ_DATA_CRC 0xC3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define OFF2PG(off) ((off) / W1_PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define CRC16_INIT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define CRC16_VALID 0xb001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct w1_eprom_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int (*read)(struct w1_slave *sl, int pageno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u8 eprom[W1_DS2505_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) DECLARE_BITMAP(page_present, W1_DS2505_SIZE / W1_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) char nvmem_name[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static int w1_ds2502_read_page(struct w1_slave *sl, int pageno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct w1_eprom_data *data = sl->family_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int pgoff = pageno * W1_PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u8 buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u8 crc8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (test_bit(pageno, data->page_present))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return 0; /* page already present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) mutex_lock(&sl->master->bus_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (w1_reset_select_slave(sl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) buf[0] = W1_READ_DATA_CRC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) buf[1] = pgoff & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) buf[2] = pgoff >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) w1_write_block(sl->master, buf, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) crc8 = w1_read_8(sl->master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (w1_calc_crc8(buf, 3) != crc8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) w1_read_block(sl->master, &data->eprom[pgoff], W1_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) crc8 = w1_read_8(sl->master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (w1_calc_crc8(&data->eprom[pgoff], W1_PAGE_SIZE) != crc8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) set_bit(pageno, data->page_present); /* mark page present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) mutex_unlock(&sl->master->bus_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int w1_ds2505_read_page(struct w1_slave *sl, int pageno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct w1_eprom_data *data = sl->family_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int redir_retries = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int pgoff, epoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u8 buf[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 redir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u16 crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (test_bit(pageno, data->page_present))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return 0; /* page already present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) epoff = pgoff = pageno * W1_PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) mutex_lock(&sl->master->bus_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (w1_reset_select_slave(sl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) buf[0] = W1_EXT_READ_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) buf[1] = pgoff & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) buf[2] = pgoff >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) w1_write_block(sl->master, buf, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) w1_read_block(sl->master, buf + 3, 3); /* redir, crc16 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) redir = buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) crc = crc16(CRC16_INIT, buf, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (crc != CRC16_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (redir != 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) redir_retries--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (redir_retries < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) pgoff = (redir ^ 0xff) * W1_PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) w1_read_block(sl->master, &data->eprom[epoff], W1_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) w1_read_block(sl->master, buf, 2); /* crc16 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) crc = crc16(CRC16_INIT, &data->eprom[epoff], W1_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) crc = crc16(crc, buf, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (crc != CRC16_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) set_bit(pageno, data->page_present);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) mutex_unlock(&sl->master->bus_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static int w1_nvmem_read(void *priv, unsigned int off, void *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct w1_slave *sl = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct w1_eprom_data *data = sl->family_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) size_t eprom_size = data->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (off > eprom_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if ((off + count) > eprom_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) count = eprom_size - off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) i = OFF2PG(off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = data->read(sl, i++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) } while (i < OFF2PG(off + count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) memcpy(buf, &data->eprom[off], count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int w1_eprom_add_slave(struct w1_slave *sl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct w1_eprom_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct nvmem_device *nvmem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct nvmem_config nvmem_cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .dev = &sl->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .reg_read = w1_nvmem_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .type = NVMEM_TYPE_OTP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .read_only = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .word_size = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .priv = sl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .id = -1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) data = devm_kzalloc(&sl->dev, sizeof(struct w1_eprom_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) sl->family_data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) switch (sl->family->fid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) case W1_DS2501_UNW_FAMILY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) data->size = W1_DS2501_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) data->read = w1_ds2502_read_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) case W1_DS2502_FAMILY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) case W1_DS2502_UNW_FAMILY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) data->size = W1_DS2502_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) data->read = w1_ds2502_read_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) case W1_DS2505_FAMILY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) data->size = W1_DS2505_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) data->read = w1_ds2505_read_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (sl->master->bus_master->dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) snprintf(data->nvmem_name, sizeof(data->nvmem_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) "%s-%02x-%012llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) sl->master->bus_master->dev_id, sl->reg_num.family,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) (unsigned long long)sl->reg_num.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) snprintf(data->nvmem_name, sizeof(data->nvmem_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) "%02x-%012llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) sl->reg_num.family,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) (unsigned long long)sl->reg_num.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) nvmem_cfg.name = data->nvmem_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) nvmem_cfg.size = data->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) nvmem = devm_nvmem_register(&sl->dev, &nvmem_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return PTR_ERR_OR_ZERO(nvmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static const struct w1_family_ops w1_eprom_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) .add_slave = w1_eprom_add_slave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static struct w1_family w1_family_09 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) .fid = W1_DS2502_FAMILY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) .fops = &w1_eprom_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static struct w1_family w1_family_0b = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) .fid = W1_DS2505_FAMILY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) .fops = &w1_eprom_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static struct w1_family w1_family_89 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) .fid = W1_DS2502_UNW_FAMILY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) .fops = &w1_eprom_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static struct w1_family w1_family_91 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .fid = W1_DS2501_UNW_FAMILY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .fops = &w1_eprom_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static int __init w1_ds250x_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) err = w1_register_family(&w1_family_09);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) err = w1_register_family(&w1_family_0b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) goto err_0b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) err = w1_register_family(&w1_family_89);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) goto err_89;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) err = w1_register_family(&w1_family_91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) goto err_91;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) err_91:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) w1_unregister_family(&w1_family_89);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) err_89:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) w1_unregister_family(&w1_family_0b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) err_0b:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) w1_unregister_family(&w1_family_09);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static void __exit w1_ds250x_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) w1_unregister_family(&w1_family_09);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) w1_unregister_family(&w1_family_0b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) w1_unregister_family(&w1_family_89);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) w1_unregister_family(&w1_family_91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) module_init(w1_ds250x_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) module_exit(w1_ds250x_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) MODULE_AUTHOR("Thomas Bogendoerfer <tbogendoerfe@suse.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) MODULE_DESCRIPTION("w1 family driver for DS250x Add Only Memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) MODULE_ALIAS("w1-family-" __stringify(W1_DS2502_FAMILY));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) MODULE_ALIAS("w1-family-" __stringify(W1_DS2505_FAMILY));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) MODULE_ALIAS("w1-family-" __stringify(W1_DS2501_UNW_FAMILY));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) MODULE_ALIAS("w1-family-" __stringify(W1_DS2502_UNW_FAMILY));
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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