| Message ID | 1368084895-18266-2-git-send-email-josh.wu@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Around Thu 09 May 2013 15:34:54 +0800 or thereabout, Josh Wu wrote: > The nand driver use cpu_is_at32ap7000() macro for a workaround. For the > multi-platform support, we will remove this cpu_is_xxx() macro. > > This patch adds a boolean variable need_reset_workaround in structure > atmel_nand_data. Using this variable we can remove cpu_is_at32ap7000() macro. > > Signed-off-by: Josh Wu <josh.wu@atmel.com> > Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> > --- > arch/avr32/mach-at32ap/at32ap700x.c | 3 +++ > drivers/mtd/nand/atmel_nand.c | 13 ++++++------- > include/linux/platform_data/atmel.h | 3 +++ > 3 files changed, 12 insertions(+), 7 deletions(-) Feel free to push this through the mtd tree, if they won't accept it I'm working on getting my workflow up on the linux-avr32.git tree. <snipp diff>
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index b323d8d..697ef58 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1979,6 +1979,9 @@ at32_add_device_nand(unsigned int id, struct atmel_nand_data *data) ARRAY_SIZE(smc_cs3_resource))) goto fail; + /* For at32ap7000, we use the reset workaround for nand driver */ + data->need_reset_workaround = true; + if (platform_device_add_data(pdev, data, sizeof(struct atmel_nand_data))) goto fail; diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 2d23d29..7bf912b 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -1174,10 +1174,9 @@ static int atmel_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, * Workaround: Reset the parity registers before reading the * actual data. */ - if (cpu_is_at32ap7000()) { - struct atmel_nand_host *host = chip->priv; + struct atmel_nand_host *host = chip->priv; + if (host->board.need_reset_workaround) ecc_writel(host->ecc, CR, ATMEL_ECC_RST); - } /* read the page */ chip->read_buf(mtd, p, eccsize); @@ -1298,11 +1297,11 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, */ static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) { - if (cpu_is_at32ap7000()) { - struct nand_chip *nand_chip = mtd->priv; - struct atmel_nand_host *host = nand_chip->priv; + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + + if (host->board.need_reset_workaround) ecc_writel(host->ecc, CR, ATMEL_ECC_RST); - } } #if defined(CONFIG_OF) diff --git a/include/linux/platform_data/atmel.h b/include/linux/platform_data/atmel.h index 6a293b7..59f558d 100644 --- a/include/linux/platform_data/atmel.h +++ b/include/linux/platform_data/atmel.h @@ -71,6 +71,9 @@ struct atmel_nand_data { u8 on_flash_bbt; /* bbt on flash */ struct mtd_partition *parts; unsigned int num_parts; + + /* default is false, only for at32ap7000 chip is true */ + bool need_reset_workaround; }; /* Serial */
The nand driver use cpu_is_at32ap7000() macro for a workaround. For the multi-platform support, we will remove this cpu_is_xxx() macro. This patch adds a boolean variable need_reset_workaround in structure atmel_nand_data. Using this variable we can remove cpu_is_at32ap7000() macro. Signed-off-by: Josh Wu <josh.wu@atmel.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> --- arch/avr32/mach-at32ap/at32ap700x.c | 3 +++ drivers/mtd/nand/atmel_nand.c | 13 ++++++------- include/linux/platform_data/atmel.h | 3 +++ 3 files changed, 12 insertions(+), 7 deletions(-)