mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
mtd: rawnand: tango: Convert the driver to exec_op()
Let's convert the driver to exec_op() to have one less driver relying on the legacy interface. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200518170912.328988-1-boris.brezillon@collabora.com
This commit is contained in:
parent
5197360f9e
commit
90d6bf481a
@ -113,53 +113,11 @@ struct tango_chip {
|
||||
|
||||
#define TIMING(t0, t1, t2, t3) ((t0) << 24 | (t1) << 16 | (t2) << 8 | (t3))
|
||||
|
||||
static void tango_cmd_ctrl(struct nand_chip *chip, int dat, unsigned int ctrl)
|
||||
{
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
if (ctrl & NAND_CLE)
|
||||
writeb_relaxed(dat, tchip->base + PBUS_CMD);
|
||||
|
||||
if (ctrl & NAND_ALE)
|
||||
writeb_relaxed(dat, tchip->base + PBUS_ADDR);
|
||||
}
|
||||
|
||||
static int tango_dev_ready(struct nand_chip *chip)
|
||||
{
|
||||
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
|
||||
|
||||
return readl_relaxed(nfc->pbus_base + PBUS_CS_CTRL) & PBUS_IORDY;
|
||||
}
|
||||
|
||||
static u8 tango_read_byte(struct nand_chip *chip)
|
||||
{
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
return readb_relaxed(tchip->base + PBUS_DATA);
|
||||
}
|
||||
|
||||
static void tango_read_buf(struct nand_chip *chip, u8 *buf, int len)
|
||||
{
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
ioread8_rep(tchip->base + PBUS_DATA, buf, len);
|
||||
}
|
||||
|
||||
static void tango_write_buf(struct nand_chip *chip, const u8 *buf, int len)
|
||||
{
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
iowrite8_rep(tchip->base + PBUS_DATA, buf, len);
|
||||
}
|
||||
|
||||
static void tango_select_chip(struct nand_chip *chip, int idx)
|
||||
static void tango_select_target(struct nand_chip *chip, unsigned int cs)
|
||||
{
|
||||
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
if (idx < 0)
|
||||
return; /* No "chip unselect" function */
|
||||
|
||||
writel_relaxed(tchip->timing1, nfc->reg_base + NFC_TIMING1);
|
||||
writel_relaxed(tchip->timing2, nfc->reg_base + NFC_TIMING2);
|
||||
writel_relaxed(tchip->xfer_cfg, nfc->reg_base + NFC_XFER_CFG);
|
||||
@ -168,6 +126,69 @@ static void tango_select_chip(struct nand_chip *chip, int idx)
|
||||
writel_relaxed(tchip->bb_cfg, nfc->reg_base + NFC_BB_CFG);
|
||||
}
|
||||
|
||||
static int tango_waitrdy(struct nand_chip *chip, unsigned int timeout_ms)
|
||||
{
|
||||
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
|
||||
u32 status;
|
||||
|
||||
return readl_relaxed_poll_timeout(nfc->pbus_base + PBUS_CS_CTRL,
|
||||
status, status & PBUS_IORDY, 20,
|
||||
timeout_ms);
|
||||
}
|
||||
|
||||
static int tango_exec_instr(struct nand_chip *chip,
|
||||
const struct nand_op_instr *instr)
|
||||
{
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
unsigned int i;
|
||||
|
||||
switch (instr->type) {
|
||||
case NAND_OP_CMD_INSTR:
|
||||
writeb_relaxed(instr->ctx.cmd.opcode, tchip->base + PBUS_CMD);
|
||||
return 0;
|
||||
case NAND_OP_ADDR_INSTR:
|
||||
for (i = 0; i < instr->ctx.addr.naddrs; i++)
|
||||
writeb_relaxed(instr->ctx.addr.addrs[i],
|
||||
tchip->base + PBUS_ADDR);
|
||||
return 0;
|
||||
case NAND_OP_DATA_IN_INSTR:
|
||||
ioread8_rep(tchip->base + PBUS_DATA, instr->ctx.data.buf.in,
|
||||
instr->ctx.data.len);
|
||||
return 0;
|
||||
case NAND_OP_DATA_OUT_INSTR:
|
||||
iowrite8_rep(tchip->base + PBUS_DATA, instr->ctx.data.buf.out,
|
||||
instr->ctx.data.len);
|
||||
return 0;
|
||||
case NAND_OP_WAITRDY_INSTR:
|
||||
return tango_waitrdy(chip,
|
||||
instr->ctx.waitrdy.timeout_ms);
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int tango_exec_op(struct nand_chip *chip,
|
||||
const struct nand_operation *op,
|
||||
bool check_only)
|
||||
{
|
||||
unsigned int i;
|
||||
int ret = 0;
|
||||
|
||||
if (check_only)
|
||||
return 0;
|
||||
|
||||
tango_select_target(chip, op->cs);
|
||||
for (i = 0; i < op->ninstrs; i++) {
|
||||
ret = tango_exec_instr(chip, &op->instrs[i]);
|
||||
if (ret)
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* The controller does not check for bitflips in erased pages,
|
||||
* therefore software must check instead.
|
||||
@ -279,6 +300,7 @@ static int tango_read_page(struct nand_chip *chip, u8 *buf,
|
||||
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
|
||||
int err, res, len = mtd->writesize;
|
||||
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
if (oob_required)
|
||||
chip->ecc.read_oob(chip, page);
|
||||
|
||||
@ -300,22 +322,30 @@ static int tango_write_page(struct nand_chip *chip, const u8 *buf,
|
||||
{
|
||||
struct mtd_info *mtd = nand_to_mtd(chip);
|
||||
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
|
||||
int err, status, len = mtd->writesize;
|
||||
const struct nand_sdr_timings *timings;
|
||||
int err, len = mtd->writesize;
|
||||
u8 status;
|
||||
|
||||
/* Calling tango_write_oob() would send PAGEPROG twice */
|
||||
if (oob_required)
|
||||
return -ENOTSUPP;
|
||||
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
writel_relaxed(0xffffffff, nfc->mem_base + METADATA);
|
||||
err = do_dma(nfc, DMA_TO_DEVICE, NFC_WRITE, buf, len, page);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
status = chip->legacy.waitfunc(chip);
|
||||
if (status & NAND_STATUS_FAIL)
|
||||
return -EIO;
|
||||
timings = nand_get_sdr_timings(&chip->data_interface);
|
||||
err = tango_waitrdy(chip, PSEC_TO_MSEC(timings->tR_max));
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
err = nand_status_op(chip, &status);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return (status & NAND_STATUS_FAIL) ? -EIO : 0;
|
||||
}
|
||||
|
||||
static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos)
|
||||
@ -326,7 +356,9 @@ static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos)
|
||||
/* skip over "len" bytes */
|
||||
nand_change_read_column_op(chip, *pos, NULL, 0, false);
|
||||
} else {
|
||||
tango_read_buf(chip, *buf, len);
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
ioread8_rep(tchip->base + PBUS_DATA, *buf, len);
|
||||
*buf += len;
|
||||
}
|
||||
}
|
||||
@ -339,7 +371,9 @@ static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos)
|
||||
/* skip over "len" bytes */
|
||||
nand_change_write_column_op(chip, *pos, NULL, 0, false);
|
||||
} else {
|
||||
tango_write_buf(chip, *buf, len);
|
||||
struct tango_chip *tchip = to_tango_chip(chip);
|
||||
|
||||
iowrite8_rep(tchip->base + PBUS_DATA, *buf, len);
|
||||
*buf += len;
|
||||
}
|
||||
}
|
||||
@ -420,6 +454,7 @@ static void raw_write(struct nand_chip *chip, const u8 *buf, const u8 *oob)
|
||||
static int tango_read_page_raw(struct nand_chip *chip, u8 *buf,
|
||||
int oob_required, int page)
|
||||
{
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
nand_read_page_op(chip, page, 0, NULL, 0);
|
||||
raw_read(chip, buf, chip->oob_poi);
|
||||
return 0;
|
||||
@ -428,6 +463,7 @@ static int tango_read_page_raw(struct nand_chip *chip, u8 *buf,
|
||||
static int tango_write_page_raw(struct nand_chip *chip, const u8 *buf,
|
||||
int oob_required, int page)
|
||||
{
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
nand_prog_page_begin_op(chip, page, 0, NULL, 0);
|
||||
raw_write(chip, buf, chip->oob_poi);
|
||||
return nand_prog_page_end_op(chip);
|
||||
@ -435,6 +471,7 @@ static int tango_write_page_raw(struct nand_chip *chip, const u8 *buf,
|
||||
|
||||
static int tango_read_oob(struct nand_chip *chip, int page)
|
||||
{
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
nand_read_page_op(chip, page, 0, NULL, 0);
|
||||
raw_read(chip, NULL, chip->oob_poi);
|
||||
return 0;
|
||||
@ -442,6 +479,7 @@ static int tango_read_oob(struct nand_chip *chip, int page)
|
||||
|
||||
static int tango_write_oob(struct nand_chip *chip, int page)
|
||||
{
|
||||
tango_select_target(chip, chip->cur_cs);
|
||||
nand_prog_page_begin_op(chip, page, 0, NULL, 0);
|
||||
raw_write(chip, NULL, chip->oob_poi);
|
||||
return nand_prog_page_end_op(chip);
|
||||
@ -528,6 +566,7 @@ static int tango_attach_chip(struct nand_chip *chip)
|
||||
static const struct nand_controller_ops tango_controller_ops = {
|
||||
.attach_chip = tango_attach_chip,
|
||||
.setup_data_interface = tango_set_timings,
|
||||
.exec_op = tango_exec_op,
|
||||
};
|
||||
|
||||
static int chip_init(struct device *dev, struct device_node *np)
|
||||
@ -562,12 +601,6 @@ static int chip_init(struct device *dev, struct device_node *np)
|
||||
ecc = &chip->ecc;
|
||||
mtd = nand_to_mtd(chip);
|
||||
|
||||
chip->legacy.read_byte = tango_read_byte;
|
||||
chip->legacy.write_buf = tango_write_buf;
|
||||
chip->legacy.read_buf = tango_read_buf;
|
||||
chip->legacy.select_chip = tango_select_chip;
|
||||
chip->legacy.cmd_ctrl = tango_cmd_ctrl;
|
||||
chip->legacy.dev_ready = tango_dev_ready;
|
||||
chip->options = NAND_USES_DMA |
|
||||
NAND_NO_SUBPAGE_WRITE |
|
||||
NAND_WAIT_TCCS;
|
||||
|
Loading…
Reference in New Issue
Block a user