diff options
| author | Boris Brezillon <boris.brezillon@collabora.com> | 2020-07-20 16:13:51 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-09-30 17:44:15 +0300 |
| commit | b0155dadeb15574380115c8fa82853ff9d6da1ad (patch) | |
| tree | 70576e68573c7fcc3b369e3cc5c55ff657919d38 /drivers/mtd | |
| parent | b5156335ac37f186812090795ed27884a76c3266 (diff) | |
| download | linux-b0155dadeb15574380115c8fa82853ff9d6da1ad.tar.xz | |
mtd: rawnand: atmel: Enable the NFC controller at probe time
No need to enable it everytime select_chip() is called. If we really
care about PM, we should implement runtime PM hooks and disable the
controller and all its clocks when the controller has been unused for
some time.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-2-tudor.ambarus@microchip.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/atmel/nand-controller.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index c3902e0e0b90..21f4f7f0e4f3 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -525,11 +525,8 @@ static void atmel_hsmc_nand_select_chip(struct nand_chip *chip, int cs) atmel_nand_select_chip(chip, cs); - if (!nand->activecs) { - regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, - ATMEL_HSMC_NFC_CTRL_DIS); + if (!nand->activecs) return; - } if (nand->activecs->rb.type == ATMEL_NAND_NATIVE_RB) chip->legacy.dev_ready = atmel_hsmc_nand_dev_ready; @@ -542,8 +539,6 @@ static void atmel_hsmc_nand_select_chip(struct nand_chip *chip, int cs) ATMEL_HSMC_NFC_CFG_PAGESIZE(mtd->writesize) | ATMEL_HSMC_NFC_CFG_SPARESIZE(mtd->oobsize) | ATMEL_HSMC_NFC_CFG_RSPARE); - regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, - ATMEL_HSMC_NFC_CTRL_EN); } static int atmel_nfc_exec_op(struct atmel_hsmc_nand_controller *nc, bool poll) @@ -2251,6 +2246,9 @@ atmel_hsmc_nand_controller_remove(struct atmel_nand_controller *nc) return ret; hsmc_nc = container_of(nc, struct atmel_hsmc_nand_controller, base); + regmap_write(hsmc_nc->base.smc, ATMEL_HSMC_NFC_CTRL, + ATMEL_HSMC_NFC_CTRL_DIS); + if (hsmc_nc->sram.pool) gen_pool_free(hsmc_nc->sram.pool, (unsigned long)hsmc_nc->sram.virt, @@ -2303,6 +2301,8 @@ static int atmel_hsmc_nand_controller_probe(struct platform_device *pdev, /* Initial NFC configuration. */ regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CFG, ATMEL_HSMC_NFC_CFG_DTO_MAX); + regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, + ATMEL_HSMC_NFC_CTRL_EN); ret = atmel_nand_controller_add_nands(&nc->base); if (ret) |