BCM270x: Switch to firmware driver

defconfig: enable BCM2835_MBOX, RASPBERRYPI_FIRMWARE and BCM_VCIO. Add firmware node and change mailbox node in Device Tree. Add/update platform file for firmware and mailbox. Strip bcm2708-vcio of everything except the legacy API and hook it up with the firmware driver. Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
raspberrypi · Jul 13, 2015 · 3349eaf · 3349eaf
1 parent becc341
commit 3349eaf
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Showing 7 changed files with 51 additions and 344 deletions.
diff --git a/arch/arm/boot/dts/bcm2708_common.dtsi b/arch/arm/boot/dts/bcm2708_common.dtsi
@@ -74,9 +74,10 @@
 		};
 
 		mailbox: mailbox@7e00b800 {
-			compatible = "brcm,bcm2708-vcio";
+			compatible = "brcm,bcm2835-mbox";
 			reg = <0x7e00b880 0x40>;
 			interrupts = <0 1>;
+			#mbox-cells = <0>;
 		};
 
 		watchdog: watchdog@7e100000 {
@@ -205,6 +206,11 @@
 				     <1 9>;
 		};
 
+		firmware: firmware {
+			compatible = "raspberrypi,bcm2835-firmware";
+			mboxes = <&mailbox>;
+		};
+
 		leds: leds {
 			compatible = "gpio-leds";
 		};

diff --git a/arch/arm/configs/bcm2709_defconfig b/arch/arm/configs/bcm2709_defconfig
@@ -574,6 +574,7 @@ CONFIG_HW_RANDOM_BCM2708=m
 CONFIG_RAW_DRIVER=y
 CONFIG_BRCM_CHAR_DRIVERS=y
 CONFIG_BCM_VC_CMA=y
+CONFIG_BCM_VCIO=y
 CONFIG_BCM_VC_SM=y
 CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=m
@@ -1074,6 +1075,7 @@ CONFIG_FB_FLEX=m
 CONFIG_FB_TFT_FBTFT_DEVICE=m
 CONFIG_MAILBOX=y
 CONFIG_BCM2708_MBOX=y
+CONFIG_BCM2835_MBOX=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXTCON=m
 CONFIG_EXTCON_ARIZONA=m
@@ -1082,6 +1084,7 @@ CONFIG_IIO_BUFFER=y
 CONFIG_IIO_BUFFER_CB=y
 CONFIG_IIO_KFIFO_BUF=m
 CONFIG_DHT11=m
+CONFIG_RASPBERRYPI_FIRMWARE=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 CONFIG_EXT4_FS_SECURITY=y

diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
@@ -567,6 +567,7 @@ CONFIG_HW_RANDOM_BCM2708=m
 CONFIG_RAW_DRIVER=y
 CONFIG_BRCM_CHAR_DRIVERS=y
 CONFIG_BCM_VC_CMA=y
+CONFIG_BCM_VCIO=y
 CONFIG_BCM_VC_SM=y
 CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=m
@@ -1067,6 +1068,7 @@ CONFIG_FB_FLEX=m
 CONFIG_FB_TFT_FBTFT_DEVICE=m
 CONFIG_MAILBOX=y
 CONFIG_BCM2708_MBOX=y
+CONFIG_BCM2835_MBOX=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXTCON=m
 CONFIG_EXTCON_ARIZONA=m
@@ -1075,6 +1077,7 @@ CONFIG_IIO_BUFFER=y
 CONFIG_IIO_BUFFER_CB=y
 CONFIG_IIO_KFIFO_BUF=m
 CONFIG_DHT11=m
+CONFIG_RASPBERRYPI_FIRMWARE=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 CONFIG_EXT4_FS_SECURITY=y

diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
@@ -405,7 +405,7 @@ static struct resource bcm2708_vcio_resources[] = {
 static u64 vcio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
 
 static struct platform_device bcm2708_vcio_device = {
-	.name = "bcm2708_vcio",
+	.name = "bcm2835-mbox",
 	.id = -1,		/* only one VideoCore I/O area */
 	.resource = bcm2708_vcio_resources,
 	.num_resources = ARRAY_SIZE(bcm2708_vcio_resources),
@@ -415,6 +415,16 @@ static struct platform_device bcm2708_vcio_device = {
 		},
 };
 
+static u64 rpifw_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_rpifw_device = {
+	.name = "raspberrypi-firmware",
+	.dev = {
+		.dma_mask = &rpifw_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+	},
+};
+
 static struct resource bcm2708_vchiq_resources[] = {
 	{
 		.start = ARMCTRL_0_BELL_BASE,
@@ -871,6 +881,7 @@ void __init bcm2708_init(void)
 
 	bcm_register_device_dt(&bcm2708_dmaengine_device);
 	bcm_register_device_dt(&bcm2708_vcio_device);
+	bcm_register_device_dt(&bcm2708_rpifw_device);
 	bcm_register_device_dt(&bcm2708_vchiq_device);
 #ifdef CONFIG_BCM2708_GPIO
 	bcm_register_device_dt(&bcm2708_gpio_device);

diff --git a/arch/arm/mach-bcm2709/bcm2709.c b/arch/arm/mach-bcm2709/bcm2709.c
@@ -426,7 +426,7 @@ static struct resource bcm2708_vcio_resources[] = {
 static u64 vcio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
 
 static struct platform_device bcm2708_vcio_device = {
-	.name = "bcm2708_vcio",
+	.name = "bcm2835-mbox",
 	.id = -1,		/* only one VideoCore I/O area */
 	.resource = bcm2708_vcio_resources,
 	.num_resources = ARRAY_SIZE(bcm2708_vcio_resources),
@@ -436,6 +436,16 @@ static struct platform_device bcm2708_vcio_device = {
 		},
 };
 
+static u64 rpifw_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_rpifw_device = {
+	.name = "raspberrypi-firmware",
+	.dev = {
+		.dma_mask = &rpifw_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+	},
+};
+
 static struct resource bcm2708_vchiq_resources[] = {
 	{
 		.start = ARMCTRL_0_BELL_BASE,
@@ -892,6 +902,7 @@ void __init bcm2709_init(void)
 
 	bcm_register_device_dt(&bcm2708_dmaengine_device);
 	bcm_register_device_dt(&bcm2708_vcio_device);
+	bcm_register_device_dt(&bcm2708_rpifw_device);
 	bcm_register_device_dt(&bcm2708_vchiq_device);
 #ifdef CONFIG_BCM2708_GPIO
 	bcm_register_device_dt(&bcm2708_gpio_device);

diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
@@ -9,7 +9,7 @@ if MAILBOX
 
 config BCM2708_MBOX
 	bool "Broadcom BCM2708 Mailbox (vcio)"
-	depends on MACH_BCM2708 || MACH_BCM2709 || ARCH_BCM2835
+	depends on BCM2835_MBOX
 	help
 	  Broadcom BCM2708 Mailbox (vcio)