diff options
author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-04-02 13:03:04 +0900 |
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committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-04-18 08:54:03 +0200 |
commit | f55411427f1c649c598bf2cfc7653cfbe3f1e603 (patch) | |
tree | 9c9bd2bc98dd5e5c29e240705c2520570edf9f7b /drivers/mtd | |
parent | cf067b5be011dbc0eaf8679c743e0c1bc0b77745 (diff) | |
download | linux-f55411427f1c649c598bf2cfc7653cfbe3f1e603.tar.bz2 |
mtd: rawnand: denali: switch over to ->exec_op() from legacy hooks
Implement ->exec_op(), and remove the deprecated hooks.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r-- | drivers/mtd/nand/raw/denali.c | 251 |
1 files changed, 143 insertions, 108 deletions
diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c index 47557380e6dd..2e7529ea4e5e 100644 --- a/drivers/mtd/nand/raw/denali.c +++ b/drivers/mtd/nand/raw/denali.c @@ -206,85 +206,11 @@ static uint32_t denali_wait_for_irq(struct denali_nand_info *denali, return denali->irq_status; } -static void denali_read_buf(struct nand_chip *chip, uint8_t *buf, int len) +static void denali_select_target(struct nand_chip *chip, int cs) { - struct mtd_info *mtd = nand_to_mtd(chip); - struct denali_nand_info *denali = mtd_to_denali(mtd); - u32 addr = DENALI_MAP11_DATA | DENALI_BANK(denali); - int i; - - for (i = 0; i < len; i++) - buf[i] = denali->host_read(denali, addr); -} - -static void denali_write_buf(struct nand_chip *chip, const uint8_t *buf, - int len) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - u32 addr = DENALI_MAP11_DATA | DENALI_BANK(denali); - int i; - - for (i = 0; i < len; i++) - denali->host_write(denali, addr, buf[i]); -} - -static void denali_read_buf16(struct nand_chip *chip, uint8_t *buf, int len) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - u32 addr = DENALI_MAP11_DATA | DENALI_BANK(denali); - uint16_t *buf16 = (uint16_t *)buf; - int i; - - for (i = 0; i < len / 2; i++) - buf16[i] = denali->host_read(denali, addr); -} - -static void denali_write_buf16(struct nand_chip *chip, const uint8_t *buf, - int len) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - u32 addr = DENALI_MAP11_DATA | DENALI_BANK(denali); - const uint16_t *buf16 = (const uint16_t *)buf; - int i; - - for (i = 0; i < len / 2; i++) - denali->host_write(denali, addr, buf16[i]); -} - -static uint8_t denali_read_byte(struct nand_chip *chip) -{ - uint8_t byte; - - denali_read_buf(chip, &byte, 1); - - return byte; -} - -static void denali_write_byte(struct nand_chip *chip, uint8_t byte) -{ - denali_write_buf(chip, &byte, 1); -} - -static void denali_cmd_ctrl(struct nand_chip *chip, int dat, unsigned int ctrl) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - uint32_t type; - - if (ctrl & NAND_CLE) - type = DENALI_MAP11_CMD; - else if (ctrl & NAND_ALE) - type = DENALI_MAP11_ADDR; - else - return; - - /* - * Some commands are followed by chip->legacy.waitfunc. - * irq_status must be cleared here to catch the R/B# interrupt later. - */ - if (ctrl & NAND_CTRL_CHANGE) - denali_reset_irq(denali); + struct denali_nand_info *denali = to_denali(chip); - denali->host_write(denali, DENALI_BANK(denali) | type, dat); + denali->active_bank = cs; } static int denali_change_column(struct nand_chip *chip, unsigned int offset, @@ -772,6 +698,8 @@ static int denali_page_xfer(struct nand_chip *chip, void *buf, size_t size, { struct denali_nand_info *denali = to_denali(chip); + denali_select_target(chip, chip->cur_cs); + if (denali->dma_avail) return denali_dma_xfer(denali, buf, size, page, write); else @@ -819,24 +747,6 @@ static int denali_write_page(struct nand_chip *chip, const uint8_t *buf, return denali_page_xfer(chip, (void *)buf, mtd->writesize, page, 1); } -static void denali_select_chip(struct nand_chip *chip, int cs) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - - denali->active_bank = cs; -} - -static int denali_waitfunc(struct nand_chip *chip) -{ - struct denali_nand_info *denali = mtd_to_denali(nand_to_mtd(chip)); - uint32_t irq_status; - - /* R/B# pin transitioned from low to high? */ - irq_status = denali_wait_for_irq(denali, INTR__INT_ACT); - - return irq_status & INTR__INT_ACT ? 0 : NAND_STATUS_FAIL; -} - static int denali_setup_data_interface(struct nand_chip *chip, int chipnr, const struct nand_data_interface *conf) { @@ -1153,13 +1063,6 @@ static int denali_attach_chip(struct nand_chip *chip) mtd_set_ooblayout(mtd, &denali_ooblayout_ops); - if (chip->options & NAND_BUSWIDTH_16) { - chip->legacy.read_buf = denali_read_buf16; - chip->legacy.write_buf = denali_write_buf16; - } else { - chip->legacy.read_buf = denali_read_buf; - chip->legacy.write_buf = denali_write_buf; - } chip->ecc.read_page = denali_read_page; chip->ecc.read_page_raw = denali_read_page_raw; chip->ecc.write_page = denali_write_page; @@ -1174,8 +1077,146 @@ static int denali_attach_chip(struct nand_chip *chip) return 0; } +static void denali_exec_in8(struct denali_nand_info *denali, u32 type, + u8 *buf, unsigned int len) +{ + int i; + + for (i = 0; i < len; i++) + buf[i] = denali->host_read(denali, type | DENALI_BANK(denali)); +} + +static void denali_exec_in16(struct denali_nand_info *denali, u32 type, + u8 *buf, unsigned int len) +{ + u32 data; + int i; + + for (i = 0; i < len; i += 2) { + data = denali->host_read(denali, type | DENALI_BANK(denali)); + /* bit 31:24 and 15:8 are used for DDR */ + buf[i] = data; + buf[i + 1] = data >> 16; + } +} + +static void denali_exec_in(struct denali_nand_info *denali, u32 type, + u8 *buf, unsigned int len, bool width16) +{ + if (width16) + denali_exec_in16(denali, type, buf, len); + else + denali_exec_in8(denali, type, buf, len); +} + +static void denali_exec_out8(struct denali_nand_info *denali, u32 type, + const u8 *buf, unsigned int len) +{ + int i; + + for (i = 0; i < len; i++) + denali->host_write(denali, type | DENALI_BANK(denali), buf[i]); +} + +static void denali_exec_out16(struct denali_nand_info *denali, u32 type, + const u8 *buf, unsigned int len) +{ + int i; + + for (i = 0; i < len; i += 2) + denali->host_write(denali, type | DENALI_BANK(denali), + buf[i + 1] << 16 | buf[i]); +} + +static void denali_exec_out(struct denali_nand_info *denali, u32 type, + const u8 *buf, unsigned int len, bool width16) +{ + if (width16) + denali_exec_out16(denali, type, buf, len); + else + denali_exec_out8(denali, type, buf, len); +} + +static int denali_exec_waitrdy(struct denali_nand_info *denali) +{ + u32 irq_stat; + + /* R/B# pin transitioned from low to high? */ + irq_stat = denali_wait_for_irq(denali, INTR__INT_ACT); + + /* Just in case nand_operation has multiple NAND_OP_WAITRDY_INSTR. */ + denali_reset_irq(denali); + + return irq_stat & INTR__INT_ACT ? 0 : -EIO; +} + +static int denali_exec_instr(struct nand_chip *chip, + const struct nand_op_instr *instr) +{ + struct denali_nand_info *denali = to_denali(chip); + + switch (instr->type) { + case NAND_OP_CMD_INSTR: + denali_exec_out8(denali, DENALI_MAP11_CMD, + &instr->ctx.cmd.opcode, 1); + return 0; + case NAND_OP_ADDR_INSTR: + denali_exec_out8(denali, DENALI_MAP11_ADDR, + instr->ctx.addr.addrs, + instr->ctx.addr.naddrs); + return 0; + case NAND_OP_DATA_IN_INSTR: + denali_exec_in(denali, DENALI_MAP11_DATA, + instr->ctx.data.buf.in, + instr->ctx.data.len, + !instr->ctx.data.force_8bit && + chip->options & NAND_BUSWIDTH_16); + return 0; + case NAND_OP_DATA_OUT_INSTR: + denali_exec_out(denali, DENALI_MAP11_DATA, + instr->ctx.data.buf.out, + instr->ctx.data.len, + !instr->ctx.data.force_8bit && + chip->options & NAND_BUSWIDTH_16); + return 0; + case NAND_OP_WAITRDY_INSTR: + return denali_exec_waitrdy(denali); + default: + WARN_ONCE(1, "unsupported NAND instruction type: %d\n", + instr->type); + + return -EINVAL; + } +} + +static int denali_exec_op(struct nand_chip *chip, + const struct nand_operation *op, bool check_only) +{ + int i, ret; + + if (check_only) + return 0; + + denali_select_target(chip, op->cs); + + /* + * Some commands contain NAND_OP_WAITRDY_INSTR. + * irq must be cleared here to catch the R/B# interrupt there. + */ + denali_reset_irq(to_denali(chip)); + + for (i = 0; i < op->ninstrs; i++) { + ret = denali_exec_instr(chip, &op->instrs[i]); + if (ret) + return ret; + } + + return 0; +} + static const struct nand_controller_ops denali_controller_ops = { .attach_chip = denali_attach_chip, + .exec_op = denali_exec_op, .setup_data_interface = denali_setup_data_interface, }; @@ -1210,12 +1251,6 @@ int denali_init(struct denali_nand_info *denali) if (!mtd->name) mtd->name = "denali-nand"; - chip->legacy.select_chip = denali_select_chip; - chip->legacy.read_byte = denali_read_byte; - chip->legacy.write_byte = denali_write_byte; - chip->legacy.cmd_ctrl = denali_cmd_ctrl; - chip->legacy.waitfunc = denali_waitfunc; - if (features & FEATURES__INDEX_ADDR) { denali->host_read = denali_indexed_read; denali->host_write = denali_indexed_write; |