--- /dev/null
+From 5651d6aaf489d1db48c253cf884b40214e91c2c5 Mon Sep 17 00:00:00 2001
+From: Brian Norris <computersforpeace@gmail.com>
+Date: Fri, 26 Feb 2016 11:50:28 +0100
+Subject: [PATCH] mtd: bcm47xxsflash: use ioremap_cache() instead of
+ KSEG0ADDR()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Using KSEG0ADDR makes code highly MIPS dependent and not portable.
+Thanks to the fix a68f376 ("MIPS: io.h: Define `ioremap_cache'") we can
+use ioremap_cache which is generic and supported on MIPS as well now.
+
+KSEG0ADDR was translating 0x1c000000 into 0x9c000000. With ioremap_cache
+we use MIPS's __ioremap (and then remap_area_pages). This results in
+different address (e.g. 0xc0080000) but it still should be cached as
+expected and it was successfully tested with BCM47186B0.
+
+Other than that drivers/bcma/driver_chipcommon_sflash.c nicely setups a
+struct resource for access window, but we wren't using it. Use it now
+and drop duplicated info.
+
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+
+--- a/drivers/bcma/driver_chipcommon_sflash.c
++++ b/drivers/bcma/driver_chipcommon_sflash.c
+@@ -146,7 +146,6 @@ int bcma_sflash_init(struct bcma_drv_cc
+ return -ENOTSUPP;
+ }
+
+- sflash->window = BCMA_SOC_FLASH2;
+ sflash->blocksize = e->blocksize;
+ sflash->numblocks = e->numblocks;
+ sflash->size = sflash->blocksize * sflash->numblocks;
+--- a/drivers/mtd/devices/bcm47xxsflash.c
++++ b/drivers/mtd/devices/bcm47xxsflash.c
+@@ -2,6 +2,7 @@
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/delay.h>
++#include <linux/ioport.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/platform_device.h>
+ #include <linux/bcma/bcma.h>
+@@ -109,8 +110,7 @@ static int bcm47xxsflash_read(struct mtd
+ if ((from + len) > mtd->size)
+ return -EINVAL;
+
+- memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),
+- len);
++ memcpy_fromio(buf, b47s->window + from, len);
+ *retlen = len;
+
+ return len;
+@@ -275,15 +275,33 @@ static void bcm47xxsflash_bcma_cc_write(
+
+ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
+ {
+- struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
++ struct device *dev = &pdev->dev;
++ struct bcma_sflash *sflash = dev_get_platdata(dev);
+ struct bcm47xxsflash *b47s;
++ struct resource *res;
+ int err;
+
+- b47s = devm_kzalloc(&pdev->dev, sizeof(*b47s), GFP_KERNEL);
++ b47s = devm_kzalloc(dev, sizeof(*b47s), GFP_KERNEL);
+ if (!b47s)
+ return -ENOMEM;
+ sflash->priv = b47s;
+
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!res) {
++ dev_err(dev, "invalid resource\n");
++ return -EINVAL;
++ }
++ if (!devm_request_mem_region(dev, res->start, resource_size(res),
++ res->name)) {
++ dev_err(dev, "can't request region for resource %pR\n", res);
++ return -EBUSY;
++ }
++ b47s->window = ioremap_cache(res->start, resource_size(res));
++ if (!b47s->window) {
++ dev_err(dev, "ioremap failed for resource %pR\n", res);
++ return -ENOMEM;
++ }
++
+ b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash);
+ b47s->cc_read = bcm47xxsflash_bcma_cc_read;
+ b47s->cc_write = bcm47xxsflash_bcma_cc_write;
+@@ -297,7 +315,6 @@ static int bcm47xxsflash_bcma_probe(stru
+ break;
+ }
+
+- b47s->window = sflash->window;
+ b47s->blocksize = sflash->blocksize;
+ b47s->numblocks = sflash->numblocks;
+ b47s->size = sflash->size;
+@@ -306,6 +323,7 @@ static int bcm47xxsflash_bcma_probe(stru
+ err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
+ if (err) {
+ pr_err("Failed to register MTD device: %d\n", err);
++ iounmap(b47s->window);
+ return err;
+ }
+
+@@ -321,6 +339,7 @@ static int bcm47xxsflash_bcma_remove(str
+ struct bcm47xxsflash *b47s = sflash->priv;
+
+ mtd_device_unregister(&b47s->mtd);
++ iounmap(b47s->window);
+
+ return 0;
+ }
+--- a/drivers/mtd/devices/bcm47xxsflash.h
++++ b/drivers/mtd/devices/bcm47xxsflash.h
+@@ -65,7 +65,8 @@ struct bcm47xxsflash {
+
+ enum bcm47xxsflash_type type;
+
+- u32 window;
++ void __iomem *window;
++
+ u32 blocksize;
+ u16 numblocks;
+ u32 size;
+--- a/include/linux/bcma/bcma_driver_chipcommon.h
++++ b/include/linux/bcma/bcma_driver_chipcommon.h
+@@ -585,7 +585,6 @@ struct bcma_pflash {
+ #ifdef CONFIG_BCMA_SFLASH
+ struct bcma_sflash {
+ bool present;
+- u32 window;
+ u32 blocksize;
+ u16 numblocks;
+ u32 size;
--- /dev/null
+From efacc699139e13f9d3ed8b47df92acb88ff8479f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Tue, 19 Jul 2016 09:08:32 +0200
+Subject: [PATCH] mtd: add arch dependency for MTD_BCM47XXSFLASH symbol
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We dropped strict MIPS dependency for bcm47xxsflash driver in:
+commit 5651d6aaf489 ("mtd: bcm47xxsflash: use ioremap_cache() instead of
+KSEG0ADDR()") but using ioremap_cache still limits building it to few
+selected architectures only.
+
+A recent commit 57d8f7dd2132 ("bcma: allow enabling serial flash support
+on non-MIPS SoCs") automatically dropped MIPS dependency for
+MTD_BCM47XXSFLASH which broke building e.g. on powerpc and cris.
+
+The bcma change is alright as it doesn't break building bcma code in any
+way. MTD_BCM47XXSFLASH on the other hand should be limited to archs
+which need it and can build it (by providing ioremap_cache).
+
+Fixes: 57d8f7dd2132 ("bcma: allow enabling serial flash support on non-MIPS SoCs")
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: Brian Norris <computersforpeace@gmail.com>
+Acked-by: Brian Norris <computersforpeace@gmail.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/mtd/devices/Kconfig | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mtd/devices/Kconfig
++++ b/drivers/mtd/devices/Kconfig
+@@ -114,7 +114,7 @@ config MTD_SST25L
+
+ config MTD_BCM47XXSFLASH
+ tristate "R/O support for serial flash on BCMA bus"
+- depends on BCMA_SFLASH
++ depends on BCMA_SFLASH && (MIPS || ARM)
+ help
+ BCMA bus can have various flash memories attached, they are
+ registered by bcma as platform devices. This enables driver for
+++ /dev/null
-From 5651d6aaf489d1db48c253cf884b40214e91c2c5 Mon Sep 17 00:00:00 2001
-From: Brian Norris <computersforpeace@gmail.com>
-Date: Fri, 26 Feb 2016 11:50:28 +0100
-Subject: [PATCH] mtd: bcm47xxsflash: use ioremap_cache() instead of
- KSEG0ADDR()
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Using KSEG0ADDR makes code highly MIPS dependent and not portable.
-Thanks to the fix a68f376 ("MIPS: io.h: Define `ioremap_cache'") we can
-use ioremap_cache which is generic and supported on MIPS as well now.
-
-KSEG0ADDR was translating 0x1c000000 into 0x9c000000. With ioremap_cache
-we use MIPS's __ioremap (and then remap_area_pages). This results in
-different address (e.g. 0xc0080000) but it still should be cached as
-expected and it was successfully tested with BCM47186B0.
-
-Other than that drivers/bcma/driver_chipcommon_sflash.c nicely setups a
-struct resource for access window, but we wren't using it. Use it now
-and drop duplicated info.
-
-Signed-off-by: Brian Norris <computersforpeace@gmail.com>
-Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
----
-
---- a/drivers/bcma/driver_chipcommon_sflash.c
-+++ b/drivers/bcma/driver_chipcommon_sflash.c
-@@ -146,7 +146,6 @@ int bcma_sflash_init(struct bcma_drv_cc
- return -ENOTSUPP;
- }
-
-- sflash->window = BCMA_SOC_FLASH2;
- sflash->blocksize = e->blocksize;
- sflash->numblocks = e->numblocks;
- sflash->size = sflash->blocksize * sflash->numblocks;
---- a/drivers/mtd/devices/bcm47xxsflash.c
-+++ b/drivers/mtd/devices/bcm47xxsflash.c
-@@ -2,6 +2,7 @@
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
-+#include <linux/ioport.h>
- #include <linux/mtd/mtd.h>
- #include <linux/platform_device.h>
- #include <linux/bcma/bcma.h>
-@@ -109,8 +110,7 @@ static int bcm47xxsflash_read(struct mtd
- if ((from + len) > mtd->size)
- return -EINVAL;
-
-- memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),
-- len);
-+ memcpy_fromio(buf, b47s->window + from, len);
- *retlen = len;
-
- return len;
-@@ -275,15 +275,33 @@ static void bcm47xxsflash_bcma_cc_write(
-
- static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
- {
-- struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
-+ struct device *dev = &pdev->dev;
-+ struct bcma_sflash *sflash = dev_get_platdata(dev);
- struct bcm47xxsflash *b47s;
-+ struct resource *res;
- int err;
-
-- b47s = devm_kzalloc(&pdev->dev, sizeof(*b47s), GFP_KERNEL);
-+ b47s = devm_kzalloc(dev, sizeof(*b47s), GFP_KERNEL);
- if (!b47s)
- return -ENOMEM;
- sflash->priv = b47s;
-
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!res) {
-+ dev_err(dev, "invalid resource\n");
-+ return -EINVAL;
-+ }
-+ if (!devm_request_mem_region(dev, res->start, resource_size(res),
-+ res->name)) {
-+ dev_err(dev, "can't request region for resource %pR\n", res);
-+ return -EBUSY;
-+ }
-+ b47s->window = ioremap_cache(res->start, resource_size(res));
-+ if (!b47s->window) {
-+ dev_err(dev, "ioremap failed for resource %pR\n", res);
-+ return -ENOMEM;
-+ }
-+
- b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash);
- b47s->cc_read = bcm47xxsflash_bcma_cc_read;
- b47s->cc_write = bcm47xxsflash_bcma_cc_write;
-@@ -297,7 +315,6 @@ static int bcm47xxsflash_bcma_probe(stru
- break;
- }
-
-- b47s->window = sflash->window;
- b47s->blocksize = sflash->blocksize;
- b47s->numblocks = sflash->numblocks;
- b47s->size = sflash->size;
-@@ -306,6 +323,7 @@ static int bcm47xxsflash_bcma_probe(stru
- err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
- if (err) {
- pr_err("Failed to register MTD device: %d\n", err);
-+ iounmap(b47s->window);
- return err;
- }
-
-@@ -321,6 +339,7 @@ static int bcm47xxsflash_bcma_remove(str
- struct bcm47xxsflash *b47s = sflash->priv;
-
- mtd_device_unregister(&b47s->mtd);
-+ iounmap(b47s->window);
-
- return 0;
- }
---- a/drivers/mtd/devices/bcm47xxsflash.h
-+++ b/drivers/mtd/devices/bcm47xxsflash.h
-@@ -65,7 +65,8 @@ struct bcm47xxsflash {
-
- enum bcm47xxsflash_type type;
-
-- u32 window;
-+ void __iomem *window;
-+
- u32 blocksize;
- u16 numblocks;
- u32 size;
---- a/include/linux/bcma/bcma_driver_chipcommon.h
-+++ b/include/linux/bcma/bcma_driver_chipcommon.h
-@@ -585,7 +585,6 @@ struct bcma_pflash {
- #ifdef CONFIG_BCMA_SFLASH
- struct bcma_sflash {
- bool present;
-- u32 window;
- u32 blocksize;
- u16 numblocks;
- u32 size;
projects / openwrt / staging / dedeckeh.git / commitdiff