^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Probing flash chips with QINFO records.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (C) 2008 Korolev Alexey <akorolev@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^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/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/errno.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/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mtd/xip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mtd/map.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mtd/pfow.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mtd/qinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct mtd_info *lpddr_probe(struct map_info *map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static struct lpddr_private *lpddr_probe_chip(struct map_info *map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int lpddr_pfow_present(struct map_info *map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct lpddr_private *lpddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static struct qinfo_query_info qinfo_array[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* General device info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {0, 0, "DevSizeShift", "Device size 2^n bytes"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {0, 3, "BufSizeShift", "Program buffer size 2^n bytes"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Erase block information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {1, 1, "TotalBlocksNum", "Total number of blocks"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {1, 2, "UniformBlockSizeShift", "Uniform block size 2^n bytes"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Partition information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {2, 1, "HWPartsNum", "Number of hardware partitions"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Optional features */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {5, 1, "SuspEraseSupp", "Suspend erase supported"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Operation typical time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {10, 0, "SingleWordProgTime", "Single word program 2^n u-sec"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {10, 1, "ProgBufferTime", "Program buffer write 2^n u-sec"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {10, 2, "BlockEraseTime", "Block erase 2^n m-sec"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {10, 3, "FullChipEraseTime", "Full chip erase 2^n m-sec"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static long lpddr_get_qinforec_pos(struct map_info *map, char *id_str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int qinfo_lines = ARRAY_SIZE(qinfo_array);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int bankwidth = map_bankwidth(map) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int major, minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) for (i = 0; i < qinfo_lines; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (strcmp(id_str, qinfo_array[i].id_str) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) major = qinfo_array[i].major & ((1 << bankwidth) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) minor = qinfo_array[i].minor & ((1 << bankwidth) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return minor | (major << bankwidth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) printk(KERN_ERR"%s qinfo id string is wrong! \n", map->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static uint16_t lpddr_info_query(struct map_info *map, char *id_str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) unsigned int dsr, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int bits_per_chip = map_bankwidth(map) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) unsigned long adr = lpddr_get_qinforec_pos(map, id_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int attempts = 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Write a request for the PFOW record */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) map_write(map, CMD(LPDDR_INFO_QUERY),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) map->pfow_base + PFOW_COMMAND_CODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) map_write(map, CMD(adr & ((1 << bits_per_chip) - 1)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) map->pfow_base + PFOW_COMMAND_ADDRESS_L);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) map_write(map, CMD(adr >> bits_per_chip),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) map->pfow_base + PFOW_COMMAND_ADDRESS_H);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) map_write(map, CMD(LPDDR_START_EXECUTION),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) map->pfow_base + PFOW_COMMAND_EXECUTE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) while ((attempts--) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) dsr = CMDVAL(map_read(map, map->pfow_base + PFOW_DSR));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (dsr & DSR_READY_STATUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) val = CMDVAL(map_read(map, map->pfow_base + PFOW_COMMAND_DATA));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int lpddr_pfow_present(struct map_info *map, struct lpddr_private *lpddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) map_word pfow_val[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Check identification string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) pfow_val[0] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_P);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) pfow_val[1] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) pfow_val[2] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_O);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pfow_val[3] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_W);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!map_word_equal(map, CMD('P'), pfow_val[0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!map_word_equal(map, CMD('F'), pfow_val[1]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (!map_word_equal(map, CMD('O'), pfow_val[2]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!map_word_equal(map, CMD('W'), pfow_val[3]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return 1; /* "PFOW" is found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) printk(KERN_WARNING"%s: PFOW string at 0x%lx is not found \n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) map->name, map->pfow_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) lpddr->qinfo = kzalloc(sizeof(struct qinfo_chip), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (!lpddr->qinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* Get the ManuID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) lpddr->ManufactId = CMDVAL(map_read(map, map->pfow_base + PFOW_MANUFACTURER_ID));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* Get the DeviceID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) lpddr->DevId = CMDVAL(map_read(map, map->pfow_base + PFOW_DEVICE_ID));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* read parameters from chip qinfo table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) lpddr->qinfo->DevSizeShift = lpddr_info_query(map, "DevSizeShift");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) lpddr->qinfo->TotalBlocksNum = lpddr_info_query(map, "TotalBlocksNum");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) lpddr->qinfo->BufSizeShift = lpddr_info_query(map, "BufSizeShift");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) lpddr->qinfo->HWPartsNum = lpddr_info_query(map, "HWPartsNum");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) lpddr->qinfo->UniformBlockSizeShift =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) lpddr_info_query(map, "UniformBlockSizeShift");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) lpddr->qinfo->SuspEraseSupp = lpddr_info_query(map, "SuspEraseSupp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) lpddr->qinfo->SingleWordProgTime =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) lpddr_info_query(map, "SingleWordProgTime");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) lpddr->qinfo->ProgBufferTime = lpddr_info_query(map, "ProgBufferTime");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) lpddr->qinfo->BlockEraseTime = lpddr_info_query(map, "BlockEraseTime");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct lpddr_private *lpddr_probe_chip(struct map_info *map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct lpddr_private lpddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct lpddr_private *retlpddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int numvirtchips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if ((map->pfow_base + 0x1000) >= map->size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) printk(KERN_NOTICE"%s Probe at base (0x%08lx) past the end of"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) "the map(0x%08lx)\n", map->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) (unsigned long)map->pfow_base, map->size - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) memset(&lpddr, 0, sizeof(struct lpddr_private));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (!lpddr_pfow_present(map, &lpddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (!lpddr_chip_setup(map, &lpddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /* Ok so we found a chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) lpddr.chipshift = lpddr.qinfo->DevSizeShift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) lpddr.numchips = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) numvirtchips = lpddr.numchips * lpddr.qinfo->HWPartsNum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) retlpddr = kzalloc(struct_size(retlpddr, chips, numvirtchips),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (!retlpddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) memcpy(retlpddr, &lpddr, sizeof(struct lpddr_private));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) retlpddr->numchips = numvirtchips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) retlpddr->chipshift = retlpddr->qinfo->DevSizeShift -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) __ffs(retlpddr->qinfo->HWPartsNum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return retlpddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct mtd_info *lpddr_probe(struct map_info *map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct mtd_info *mtd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct lpddr_private *lpddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* First probe the map to see if we havecan open PFOW here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) lpddr = lpddr_probe_chip(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!lpddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) map->fldrv_priv = lpddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) mtd = lpddr_cmdset(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (mtd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (mtd->size > map->size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) printk(KERN_WARNING "Reducing visibility of %ldKiB chip"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) "to %ldKiB\n", (unsigned long)mtd->size >> 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) (unsigned long)map->size >> 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) mtd->size = map->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) kfree(lpddr->qinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) kfree(lpddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) map->fldrv_priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static struct mtd_chip_driver lpddr_chipdrv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .probe = lpddr_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .name = "qinfo_probe",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .module = THIS_MODULE
^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 int __init lpddr_probe_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) register_mtd_chip_driver(&lpddr_chipdrv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static void __exit lpddr_probe_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) unregister_mtd_chip_driver(&lpddr_chipdrv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) module_init(lpddr_probe_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) module_exit(lpddr_probe_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) MODULE_AUTHOR("Vasiliy Leonenko <vasiliy.leonenko@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) MODULE_DESCRIPTION("Driver to probe qinfo flash chips");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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