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authorEric Anholt <eric@anholt.net>2015-02-26 10:08:06 +0000
committerEric Anholt <eric@anholt.net>2015-10-14 15:30:06 -0700
commit4e3d60656a7235b6b6e86d7ef48b0394276c35b5 (patch)
treee3bae80fb9abfc875b9850ee3f746ea10748cbb9 /include/soc
parent6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff)
ARM: bcm2835: Add the Raspberry Pi firmware driver
This gives us a function for making mailbox property channel requests of the firmware, which is most notable in that it will let us get and set clock rates. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'include/soc')
-rw-r--r--include/soc/bcm2835/raspberrypi-firmware.h115
1 files changed, 115 insertions, 0 deletions
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
new file mode 100644
index 000000000000..9d9efb7a43c3
--- /dev/null
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright © 2015 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/of_device.h>
+
+struct rpi_firmware;
+
+enum rpi_firmware_property_status {
+ RPI_FIRMWARE_STATUS_REQUEST = 0,
+ RPI_FIRMWARE_STATUS_SUCCESS = 0x80000000,
+ RPI_FIRMWARE_STATUS_ERROR = 0x80000001,
+};
+
+/**
+ * struct rpi_firmware_property_tag_header - Firmware property tag header
+ * @tag: One of enum_mbox_property_tag.
+ * @buf_size: The number of bytes in the value buffer following this
+ * struct.
+ * @req_resp_size: On submit, the length of the request (though it doesn't
+ * appear to be currently used by the firmware). On return,
+ * the length of the response (always 4 byte aligned), with
+ * the low bit set.
+ */
+struct rpi_firmware_property_tag_header {
+ u32 tag;
+ u32 buf_size;
+ u32 req_resp_size;
+};
+
+enum rpi_firmware_property_tag {
+ RPI_FIRMWARE_PROPERTY_END = 0,
+ RPI_FIRMWARE_GET_FIRMWARE_REVISION = 0x00000001,
+
+ RPI_FIRMWARE_SET_CURSOR_INFO = 0x00008010,
+ RPI_FIRMWARE_SET_CURSOR_STATE = 0x00008011,
+
+ RPI_FIRMWARE_GET_BOARD_MODEL = 0x00010001,
+ RPI_FIRMWARE_GET_BOARD_REVISION = 0x00010002,
+ RPI_FIRMWARE_GET_BOARD_MAC_ADDRESS = 0x00010003,
+ RPI_FIRMWARE_GET_BOARD_SERIAL = 0x00010004,
+ RPI_FIRMWARE_GET_ARM_MEMORY = 0x00010005,
+ RPI_FIRMWARE_GET_VC_MEMORY = 0x00010006,
+ RPI_FIRMWARE_GET_CLOCKS = 0x00010007,
+ RPI_FIRMWARE_GET_POWER_STATE = 0x00020001,
+ RPI_FIRMWARE_GET_TIMING = 0x00020002,
+ RPI_FIRMWARE_SET_POWER_STATE = 0x00028001,
+ RPI_FIRMWARE_GET_CLOCK_STATE = 0x00030001,
+ RPI_FIRMWARE_GET_CLOCK_RATE = 0x00030002,
+ RPI_FIRMWARE_GET_VOLTAGE = 0x00030003,
+ RPI_FIRMWARE_GET_MAX_CLOCK_RATE = 0x00030004,
+ RPI_FIRMWARE_GET_MAX_VOLTAGE = 0x00030005,
+ RPI_FIRMWARE_GET_TEMPERATURE = 0x00030006,
+ RPI_FIRMWARE_GET_MIN_CLOCK_RATE = 0x00030007,
+ RPI_FIRMWARE_GET_MIN_VOLTAGE = 0x00030008,
+ RPI_FIRMWARE_GET_TURBO = 0x00030009,
+ RPI_FIRMWARE_GET_MAX_TEMPERATURE = 0x0003000a,
+ RPI_FIRMWARE_ALLOCATE_MEMORY = 0x0003000c,
+ RPI_FIRMWARE_LOCK_MEMORY = 0x0003000d,
+ RPI_FIRMWARE_UNLOCK_MEMORY = 0x0003000e,
+ RPI_FIRMWARE_RELEASE_MEMORY = 0x0003000f,
+ RPI_FIRMWARE_EXECUTE_CODE = 0x00030010,
+ RPI_FIRMWARE_EXECUTE_QPU = 0x00030011,
+ RPI_FIRMWARE_SET_ENABLE_QPU = 0x00030012,
+ RPI_FIRMWARE_GET_DISPMANX_RESOURCE_MEM_HANDLE = 0x00030014,
+ RPI_FIRMWARE_GET_EDID_BLOCK = 0x00030020,
+ RPI_FIRMWARE_SET_CLOCK_STATE = 0x00038001,
+ RPI_FIRMWARE_SET_CLOCK_RATE = 0x00038002,
+ RPI_FIRMWARE_SET_VOLTAGE = 0x00038003,
+ RPI_FIRMWARE_SET_TURBO = 0x00038009,
+
+ /* Dispmanx TAGS */
+ RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE = 0x00040001,
+ RPI_FIRMWARE_FRAMEBUFFER_BLANK = 0x00040002,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_PHYSICAL_WIDTH_HEIGHT = 0x00040003,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_WIDTH_HEIGHT = 0x00040004,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_DEPTH = 0x00040005,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_PIXEL_ORDER = 0x00040006,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_ALPHA_MODE = 0x00040007,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH = 0x00040008,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_OFFSET = 0x00040009,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_OVERSCAN = 0x0004000a,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_PALETTE = 0x0004000b,
+ RPI_FIRMWARE_FRAMEBUFFER_RELEASE = 0x00048001,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT = 0x00044003,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT = 0x00044004,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_DEPTH = 0x00044005,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_PIXEL_ORDER = 0x00044006,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_ALPHA_MODE = 0x00044007,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_OFFSET = 0x00044009,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_OVERSCAN = 0x0004400a,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_PALETTE = 0x0004400b,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT = 0x00048003,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT = 0x00048004,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH = 0x00048005,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_PIXEL_ORDER = 0x00048006,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_ALPHA_MODE = 0x00048007,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET = 0x00048009,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN = 0x0004800a,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE = 0x0004800b,
+
+ RPI_FIRMWARE_GET_COMMAND_LINE = 0x00050001,
+ RPI_FIRMWARE_GET_DMA_CHANNELS = 0x00060001,
+};
+
+int rpi_firmware_property(struct rpi_firmware *fw,
+ u32 tag, void *data, size_t len);
+int rpi_firmware_property_list(struct rpi_firmware *fw,
+ void *data, size_t tag_size);
+struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);

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