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zynq: mtd: nand: Move zynq nand driver to driver model

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Move the zynq nand driver to driver model. Select DM_MTD if
zynq nand controller (NAND_ZYNQ) is selected.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Ashok Reddy Soma 2019-12-27 04:47:12 -07:00 committed by Michal Simek
parent c352f1e121
commit 45397a6ea3
2 changed files with 34 additions and 11 deletions
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1
drivers/mtd/nand/raw/Kconfig
View File

@ -281,6 +281,7 @@ endif
config NAND_ZYNQ
bool "Support for Zynq Nand controller"
select SYS_NAND_SELF_INIT
select DM_MTD
imply CMD_NAND
help
This enables Nand driver support for Nand flash controller

44
drivers/mtd/nand/raw/zynq_nand.c
View File

@ -17,6 +17,7 @@
#include <linux/mtd/nand_ecc.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <dm.h>
/* The NAND flash driver defines */
#define ZYNQ_NAND_CMD_PHASE 1
@ -124,18 +125,23 @@ struct zynq_nand_smc_regs {
ZYNQ_SMC_BASEADDR)
/*
* struct zynq_nand_info - Defines the NAND flash driver instance
* struct nand_config - Defines the NAND flash driver instance
* @parts: Pointer to the mtd_partition structure
* @nand_base: Virtual address of the NAND flash device
* @end_cmd_pending: End command is pending
* @end_cmd: End command
*/
struct zynq_nand_info {
struct nand_config {
void __iomem *nand_base;
u8 end_cmd_pending;
u8 end_cmd;
};
struct zynq_nand_info {
struct udevice *dev;
struct nand_chip nand_chip;
};
/*
* struct zynq_nand_command_format - Defines NAND flash command format
* @start_cmd: First cycle command (Start command)
@ -782,7 +788,7 @@ static void zynq_nand_cmd_function(struct mtd_info *mtd, unsigned int command,
struct nand_chip *chip = mtd->priv;
const struct zynq_nand_command_format *curr_cmd = NULL;
u8 addr_cycles = 0;
struct zynq_nand_info *xnand = (struct zynq_nand_info *)chip->priv;
struct nand_config *xnand = (struct nand_config *)chip->priv;
void *cmd_addr;
unsigned long cmd_data = 0;
unsigned long cmd_phase_addr = 0;
@ -1046,9 +1052,11 @@ static int zynq_nand_check_is_16bit_bw_flash(void)
return is_16bit_bw;
}
static int zynq_nand_init(struct nand_chip *nand_chip, int devnum)
static int zynq_nand_probe(struct udevice *dev)
{
struct zynq_nand_info *xnand;
struct zynq_nand_info *zynq = dev_get_priv(dev);
struct nand_chip *nand_chip = &zynq->nand_chip;
struct nand_config *xnand;
struct mtd_info *mtd;
unsigned long ecc_page_size;
u8 maf_id, dev_id, i;
@ -1059,7 +1067,7 @@ static int zynq_nand_init(struct nand_chip *nand_chip, int devnum)
int err = -1;
int is_16bit_bw;
xnand = calloc(1, sizeof(struct zynq_nand_info));
xnand = calloc(1, sizeof(struct nand_config));
if (!xnand) {
printf("%s: failed to allocate\n", __func__);
goto fail;
@ -1235,7 +1243,7 @@ static int zynq_nand_init(struct nand_chip *nand_chip, int devnum)
printf("%s: nand_scan_tail failed\n", __func__);
goto fail;
}
if (nand_register(devnum, mtd))
if (nand_register(0, mtd))
goto fail;
return 0;
fail:
@ -1243,12 +1251,26 @@ fail:
return err;
}
static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
static const struct udevice_id zynq_nand_dt_ids[] = {
{.compatible = "arm,pl353-smc-r2p1",},
{ /* sentinel */ }
};
U_BOOT_DRIVER(zynq_nand) = {
.name = "zynq-nand",
.id = UCLASS_MTD,
.of_match = zynq_nand_dt_ids,
.probe = zynq_nand_probe,
.priv_auto_alloc_size = sizeof(struct zynq_nand_info),
};
void board_nand_init(void)
{
struct nand_chip *nand = &nand_chip[0];
struct udevice *dev;
int ret;
if (zynq_nand_init(nand, 0))
puts("ZYNQ NAND init failed\n");
ret = uclass_get_device_by_driver(UCLASS_MTD,
DM_GET_DRIVER(zynq_nand), &dev);
if (ret && ret != -ENODEV)
pr_err("Failed to initialize %s. (error %d)\n", dev->name, ret);
}