From 18afbc54c4944b6c93f3888d97db0d1257a4b5e9 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Wed, 17 Oct 2012 10:08:27 +0400 Subject: mtd: gpio-nand: Ability to use driver for configurations without RDY-pin In some configurations of "gpio-nand" RDY-pin may be not connected. This patch allow to use driver for these configurations. In this case we are assume that device always ready. Signed-off-by: Alexander Shiyan Signed-off-by: Artem Bityutskiy --- drivers/mtd/nand/gpio.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'drivers/mtd/nand/gpio.c') diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index bc73bc5f2713..0b3c815ef80c 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -134,7 +134,11 @@ static void gpio_nand_readbuf16(struct mtd_info *mtd, u_char *buf, int len) static int gpio_nand_devready(struct mtd_info *mtd) { struct gpiomtd *gpiomtd = gpio_nand_getpriv(mtd); - return gpio_get_value(gpiomtd->plat.gpio_rdy); + + if (gpio_is_valid(gpiomtd->plat.gpio_rdy)) + return gpio_get_value(gpiomtd->plat.gpio_rdy); + + return 1; } #ifdef CONFIG_OF @@ -252,7 +256,8 @@ static int __devexit gpio_nand_remove(struct platform_device *dev) gpio_free(gpiomtd->plat.gpio_nce); if (gpio_is_valid(gpiomtd->plat.gpio_nwp)) gpio_free(gpiomtd->plat.gpio_nwp); - gpio_free(gpiomtd->plat.gpio_rdy); + if (gpio_is_valid(gpiomtd->plat.gpio_rdy)) + gpio_free(gpiomtd->plat.gpio_rdy); kfree(gpiomtd); @@ -336,10 +341,12 @@ static int __devinit gpio_nand_probe(struct platform_device *dev) if (ret) goto err_cle; gpio_direction_output(gpiomtd->plat.gpio_cle, 0); - ret = gpio_request(gpiomtd->plat.gpio_rdy, "NAND RDY"); - if (ret) - goto err_rdy; - gpio_direction_input(gpiomtd->plat.gpio_rdy); + if (gpio_is_valid(gpiomtd->plat.gpio_rdy)) { + ret = gpio_request(gpiomtd->plat.gpio_rdy, "NAND RDY"); + if (ret) + goto err_rdy; + gpio_direction_input(gpiomtd->plat.gpio_rdy); + } this->IO_ADDR_W = this->IO_ADDR_R; @@ -386,7 +393,8 @@ static int __devinit gpio_nand_probe(struct platform_device *dev) err_wp: if (gpio_is_valid(gpiomtd->plat.gpio_nwp)) gpio_set_value(gpiomtd->plat.gpio_nwp, 0); - gpio_free(gpiomtd->plat.gpio_rdy); + if (gpio_is_valid(gpiomtd->plat.gpio_rdy)) + gpio_free(gpiomtd->plat.gpio_rdy); err_rdy: gpio_free(gpiomtd->plat.gpio_cle); err_cle: -- cgit v1.2.2 From 06f25510692385ed4dadd23f7d3d064d1ab11c2d Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:23:07 -0500 Subject: mtd: remove use of __devinit CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton Signed-off-by: Artem Bityutskiy --- drivers/mtd/nand/gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand/gpio.c') diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index 0b3c815ef80c..45f1a240bcbd 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -282,7 +282,7 @@ static void __iomem *request_and_remap(struct resource *res, size_t size, return ptr; } -static int __devinit gpio_nand_probe(struct platform_device *dev) +static int gpio_nand_probe(struct platform_device *dev) { struct gpiomtd *gpiomtd; struct nand_chip *this; -- cgit v1.2.2 From 810b7e060c14110d8f580daaf77fab3a7d950483 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:26:04 -0500 Subject: mtd: remove use of __devexit CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton Signed-off-by: Artem Bityutskiy --- drivers/mtd/nand/gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/nand/gpio.c') diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index 45f1a240bcbd..7aec5690289a 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -231,7 +231,7 @@ gpio_nand_get_io_sync(struct platform_device *pdev) return platform_get_resource(pdev, IORESOURCE_MEM, 1); } -static int __devexit gpio_nand_remove(struct platform_device *dev) +static int gpio_nand_remove(struct platform_device *dev) { struct gpiomtd *gpiomtd = platform_get_drvdata(dev); struct resource *res; -- cgit v1.2.2 From 8204536207e99b3bbbd13d936aaa3b18449b9c00 Mon Sep 17 00:00:00 2001 From: Matthew Leach Date: Mon, 10 Dec 2012 19:12:39 +0000 Subject: mtd: nand/gpio: use io{read,write}*_rep accessors The {read,write}s{b,w,l} operations are not defined by all architectures and are being removed from the asm-generic/io.h interface. This patch replaces the usage of these string functions in the mtd gpio accessors with io{read,write}{8,16,32}_rep calls instead. Signed-off-by: Matthew Leach Signed-off-by: Will Deacon Signed-off-by: Artem Bityutskiy --- drivers/mtd/nand/gpio.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/mtd/nand/gpio.c') diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index 7aec5690289a..e789e3f51710 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -90,14 +90,14 @@ static void gpio_nand_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; - writesb(this->IO_ADDR_W, buf, len); + iowrite8_rep(this->IO_ADDR_W, buf, len); } static void gpio_nand_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; - readsb(this->IO_ADDR_R, buf, len); + ioread8_rep(this->IO_ADDR_R, buf, len); } static void gpio_nand_writebuf16(struct mtd_info *mtd, const u_char *buf, @@ -106,7 +106,7 @@ static void gpio_nand_writebuf16(struct mtd_info *mtd, const u_char *buf, struct nand_chip *this = mtd->priv; if (IS_ALIGNED((unsigned long)buf, 2)) { - writesw(this->IO_ADDR_W, buf, len>>1); + iowrite16_rep(this->IO_ADDR_W, buf, len>>1); } else { int i; unsigned short *ptr = (unsigned short *)buf; @@ -121,7 +121,7 @@ static void gpio_nand_readbuf16(struct mtd_info *mtd, u_char *buf, int len) struct nand_chip *this = mtd->priv; if (IS_ALIGNED((unsigned long)buf, 2)) { - readsw(this->IO_ADDR_R, buf, len>>1); + ioread16_rep(this->IO_ADDR_R, buf, len>>1); } else { int i; unsigned short *ptr = (unsigned short *)buf; -- cgit v1.2.2