[PATCH v2 10/14] MIPS: Malta: Probe pflash via DT

From: Paul Burton <paul.burton@imgtec.com>
To: <linux-mips@linux-mips.org>, Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>,
	<devicetree@vger.kernel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
	<linux-kernel@vger.kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Subject: [PATCH v2 10/14] MIPS: Malta: Probe pflash via DT
Date: Mon, 19 Sep 2016 22:21:27 +0100	[thread overview]
Message-ID: <20160919212132.28893-11-paul.burton@imgtec.com> (raw)
In-Reply-To: <20160919212132.28893-1-paul.burton@imgtec.com>

Add the DT nodes required to probe the CFI compatible parallel monitor
flash found on the Malta development board, and remove the platform
code that was previously doing it. Delete the now-empty malta-platform.c
file. Adjust the Malta defconfigs that enable MTD & the pflash/CFI
driver to enable CONFIG_MTD_PHYSMAP_OF rather than CONFIG_MTD_PHYSMAP in
order to preserve their behaviour.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

---

Changes in v2:
- Leave malta-platform.o in Makefile
- Move partitions under a partitions node

 arch/mips/boot/dts/mti/malta.dts            | 31 ++++++++++++++++++++
 arch/mips/configs/malta_defconfig           |  2 +-
 arch/mips/configs/malta_kvm_defconfig       |  2 +-
 arch/mips/configs/malta_kvm_guest_defconfig |  2 +-
 arch/mips/configs/maltaup_xpa_defconfig     |  2 +-
 arch/mips/mti-malta/malta-platform.c        | 44 -----------------------------
 6 files changed, 35 insertions(+), 48 deletions(-)

diff --git a/arch/mips/boot/dts/mti/malta.dts b/arch/mips/boot/dts/mti/malta.dts
index fecbca8..48783b1 100644
--- a/arch/mips/boot/dts/mti/malta.dts
+++ b/arch/mips/boot/dts/mti/malta.dts
@@ -50,6 +50,37 @@
 		interrupts = <GIC_SHARED 3 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	flash@1e000000 {
+		compatible = "intel,dt28f160", "cfi-flash";
+		reg = <0x1e000000 0x400000>;
+		bank-width = <4>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			yamon@0 {
+				label = "YAMON";
+				reg = <0x0 0x100000>;
+				read-only;
+			};
+
+			user-fs@100000 {
+				label = "User FS";
+				reg = <0x100000 0x2e0000>;
+			};
+
+			board-config@3e0000 {
+				label = "Board Config";
+				reg = <0x3e0000 0x20000>;
+				read-only;
+			};
+		};
+	};
+
 	isa {
 		compatible = "isa";
 		#address-cells = <2>;
diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig
index 5afb484..d5d4816 100644
--- a/arch/mips/configs/malta_defconfig
+++ b/arch/mips/configs/malta_defconfig
@@ -230,7 +230,7 @@ CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
 CONFIG_MTD_CFI_STAA=y
-CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_UBI=m
 CONFIG_MTD_UBI_GLUEBI=m
 CONFIG_BLK_DEV_FD=m
diff --git a/arch/mips/configs/malta_kvm_defconfig b/arch/mips/configs/malta_kvm_defconfig
index 98f1387..ef6ef24 100644
--- a/arch/mips/configs/malta_kvm_defconfig
+++ b/arch/mips/configs/malta_kvm_defconfig
@@ -235,7 +235,7 @@ CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
 CONFIG_MTD_CFI_STAA=y
-CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_UBI=m
 CONFIG_MTD_UBI_GLUEBI=m
 CONFIG_BLK_DEV_FD=m
diff --git a/arch/mips/configs/malta_kvm_guest_defconfig b/arch/mips/configs/malta_kvm_guest_defconfig
index 3b5d591..3a49a77 100644
--- a/arch/mips/configs/malta_kvm_guest_defconfig
+++ b/arch/mips/configs/malta_kvm_guest_defconfig
@@ -234,7 +234,7 @@ CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
 CONFIG_MTD_CFI_STAA=y
-CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_UBI=m
 CONFIG_MTD_UBI_GLUEBI=m
 CONFIG_BLK_DEV_FD=m
diff --git a/arch/mips/configs/maltaup_xpa_defconfig b/arch/mips/configs/maltaup_xpa_defconfig
index 7322157..62e05eb 100644
--- a/arch/mips/configs/maltaup_xpa_defconfig
+++ b/arch/mips/configs/maltaup_xpa_defconfig
@@ -231,7 +231,7 @@ CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
 CONFIG_MTD_CFI_STAA=y
-CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_UBI=m
 CONFIG_MTD_UBI_GLUEBI=m
 CONFIG_BLK_DEV_FD=m
diff --git a/arch/mips/mti-malta/malta-platform.c b/arch/mips/mti-malta/malta-platform.c
index 6433a39..cc67dbf 100644
--- a/arch/mips/mti-malta/malta-platform.c
+++ b/arch/mips/mti-malta/malta-platform.c
@@ -25,11 +25,8 @@
 #include <linux/serial_8250.h>
 #include <linux/module.h>
 #include <linux/irq.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/physmap.h>
 #include <linux/platform_device.h>
 #include <asm/mips-boards/maltaint.h>
-#include <mtd/mtd-abi.h>
 
 #define SMC_PORT(base, int)						\
 {									\
@@ -67,49 +64,8 @@ static struct platform_device malta_uart8250_device = {
 	},
 };
 
-static struct mtd_partition malta_mtd_partitions[] = {
-	{
-		.name =		"YAMON",
-		.offset =	0x0,
-		.size =		0x100000,
-		.mask_flags =	MTD_WRITEABLE
-	}, {
-		.name =		"User FS",
-		.offset =	0x100000,
-		.size =		0x2e0000
-	}, {
-		.name =		"Board Config",
-		.offset =	0x3e0000,
-		.size =		0x020000,
-		.mask_flags =	MTD_WRITEABLE
-	}
-};
-
-static struct physmap_flash_data malta_flash_data = {
-	.width		= 4,
-	.nr_parts	= ARRAY_SIZE(malta_mtd_partitions),
-	.parts		= malta_mtd_partitions
-};
-
-static struct resource malta_flash_resource = {
-	.start		= 0x1e000000,
-	.end		= 0x1e3fffff,
-	.flags		= IORESOURCE_MEM
-};
-
-static struct platform_device malta_flash_device = {
-	.name		= "physmap-flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data	= &malta_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &malta_flash_resource,
-};
-
 static struct platform_device *malta_devices[] __initdata = {
 	&malta_uart8250_device,
-	&malta_flash_device,
 };
 
 static int __init malta_add_devices(void)
-- 
2.9.3
