diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0115-firmware-bcm2835-Support-legacy-mailbox-API.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0115-firmware-bcm2835-Support-legacy-mailbox-API.patch | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0115-firmware-bcm2835-Support-legacy-mailbox-API.patch b/target/linux/brcm2708/patches-4.1/0115-firmware-bcm2835-Support-legacy-mailbox-API.patch new file mode 100644 index 0000000..e66e979 --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0115-firmware-bcm2835-Support-legacy-mailbox-API.patch @@ -0,0 +1,88 @@ +From 24337b253d6911bc1697d107460b4d9837e712f6 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org> +Date: Fri, 26 Jun 2015 14:26:10 +0200 +Subject: [PATCH 115/203] firmware: bcm2835: Support legacy mailbox API +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Add support for the bcm_mailbox_*() functions. +This is temporary until all drivers have been converted to the +firmware API (rpi_firmware_property*()). + +Signed-off-by: Noralf Trønnes <noralf@tronnes.org> +--- + drivers/firmware/raspberrypi.c | 15 +++++++++++++-- + include/soc/bcm2835/raspberrypi-firmware.h | 2 ++ + 2 files changed, 15 insertions(+), 2 deletions(-) + +--- a/drivers/firmware/raspberrypi.c ++++ b/drivers/firmware/raspberrypi.c +@@ -19,6 +19,7 @@ + #define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf)) + #define MBOX_CHAN(msg) ((msg) & 0xf) + #define MBOX_DATA28(msg) ((msg) & ~0xf) ++#define MBOX_CHAN_VCHIQ 3 + #define MBOX_CHAN_PROPERTY 8 + + struct rpi_firmware { +@@ -26,6 +27,7 @@ struct rpi_firmware { + struct mbox_chan *chan; /* The property channel. */ + struct completion c; + u32 enabled; ++ u32 received; + }; + + static struct platform_device *g_pdev; +@@ -35,6 +37,7 @@ static DEFINE_MUTEX(transaction_lock); + static void response_callback(struct mbox_client *cl, void *msg) + { + struct rpi_firmware *fw = container_of(cl, struct rpi_firmware, cl); ++ fw->received = *(u32 *)msg; + complete(&fw->c); + } + +@@ -42,7 +45,7 @@ static void response_callback(struct mbo + * Sends a request to the firmware through the BCM2835 mailbox driver, + * and synchronously waits for the reply. + */ +-static int ++int + rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data) + { + u32 message = MBOX_MSG(chan, data); +@@ -54,7 +57,8 @@ rpi_firmware_transaction(struct rpi_firm + reinit_completion(&fw->c); + ret = mbox_send_message(fw->chan, &message); + if (ret >= 0) { +- wait_for_completion(&fw->c); ++ if (chan != MBOX_CHAN_VCHIQ) ++ wait_for_completion(&fw->c); + ret = 0; + } else { + dev_err(fw->cl.dev, "mbox_send_message returned %d\n", ret); +@@ -63,6 +67,13 @@ rpi_firmware_transaction(struct rpi_firm + + return ret; + } ++EXPORT_SYMBOL(rpi_firmware_transaction); ++ ++u32 rpi_firmware_transaction_received(struct rpi_firmware *fw) ++{ ++ return MBOX_DATA28(fw->received); ++} ++EXPORT_SYMBOL(rpi_firmware_transaction_received); + + /** + * rpi_firmware_property_list - Submit firmware property list +--- a/include/soc/bcm2835/raspberrypi-firmware.h ++++ b/include/soc/bcm2835/raspberrypi-firmware.h +@@ -116,6 +116,8 @@ enum rpi_firmware_property_tag { + RPI_FIRMWARE_GET_DMA_CHANNELS = 0x00060001, + }; + ++int rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data); ++u32 rpi_firmware_transaction_received(struct rpi_firmware *fw); + int rpi_firmware_property(struct rpi_firmware *fw, + u32 tag, void *data, size_t len); + int rpi_firmware_property_list(struct rpi_firmware *fw, |