colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mtd: rawnand: brcmnand: Add read data bus interface

Browse Source 
This is a port of the read data bus interface from the Linux
brcmnand driver, commit 546e425991205f59281e160a0d0daed47b7ca9b3
"mtd: rawnand: brcmnand: Add BCMBCA read data bus interface"

This is needed for the BCMBCA RAW NAND driver.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: William Zhang <william.zhang@broadcom.com>
This commit is contained in:
Linus Walleij
2024-09-16 11:58:47 +02:00
committed by Tom Rini
parent 84d1a73d8f
commit c65730b5b1
2 changed files with 19 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/mtd/nand/raw/brcmnand/brcmnand.c
View File

@@ -769,6 +769,20 @@ static inline void brcmnand_write_fc(struct brcmnand_controller *ctrl,
__raw_writel(val, ctrl->nand_fc + word * 4);
}
static inline void brcmnand_read_data_bus(struct brcmnand_controller *ctrl,
void __iomem *flash_cache, u32 *buffer, int fc_words)
{
struct brcmnand_soc *soc = ctrl->soc;
int i;
if (soc && soc->read_data_bus) {
soc->read_data_bus(soc, flash_cache, buffer, fc_words);
} else {
for (i = 0; i < fc_words; i++)
buffer[i] = brcmnand_read_fc(ctrl, i);
}
}
static void brcmnand_clear_ecc_addr(struct brcmnand_controller *ctrl)
{
@@ -1812,7 +1826,7 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip,
{
struct brcmnand_host *host = nand_get_controller_data(chip);
struct brcmnand_controller *ctrl = host->ctrl;
int i, j, ret = 0;
int i, ret = 0;
brcmnand_clear_ecc_addr(ctrl);
@@ -1825,8 +1839,8 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip,
if (likely(buf)) {
brcmnand_soc_data_bus_prepare(ctrl->soc, false);
for (j = 0; j < FC_WORDS; j++, buf++)
*buf = brcmnand_read_fc(ctrl, j);
brcmnand_read_data_bus(ctrl, ctrl->nand_fc, buf, FC_WORDS);
buf += FC_WORDS;
brcmnand_soc_data_bus_unprepare(ctrl->soc, false);
}

2
drivers/mtd/nand/raw/brcmnand/brcmnand.h
View File

@@ -11,6 +11,8 @@ struct brcmnand_soc {
void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en);
void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare,
bool is_param);
void (*read_data_bus)(struct brcmnand_soc *soc, void __iomem *flash_cache,
u32 *buffer, int fc_words);
void *ctrl;
};