From 62b7f5931c54e96fca56dd8761b0e466d355c881 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 18 Feb 2021 18:04:33 +0100 Subject: bcm27xx: import latest patches from the RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas (cherry-picked from commit f07e572f64) --- ...-bcm2835-unicam-Always-service-interrupts.patch | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0808-media-bcm2835-unicam-Always-service-interrupts.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0808-media-bcm2835-unicam-Always-service-interrupts.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0808-media-bcm2835-unicam-Always-service-interrupts.patch b/target/linux/bcm27xx/patches-5.4/950-0808-media-bcm2835-unicam-Always-service-interrupts.patch new file mode 100644 index 0000000000..371013fe60 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0808-media-bcm2835-unicam-Always-service-interrupts.patch @@ -0,0 +1,51 @@ +From b493e2a03c1780ae1ba09a9de58474c17a33310d Mon Sep 17 00:00:00 2001 +From: Dave Stevenson +Date: Wed, 13 May 2020 18:28:27 +0100 +Subject: [PATCH] media: bcm2835-unicam: Always service interrupts + +From when bringing up the driver, there was a check in the isr +to ignore interrupts (claiming them handled) should the driver +not be streaming. + +The VPU now will not register a camera driver if it finds a +CSI2 node enabled in device tree, therefore this flawed check is +redundant. + +https://github.com/raspberrypi/linux/issues/3602 + +Signed-off-by: Dave Stevenson +--- + drivers/media/platform/bcm2835/bcm2835-unicam.c | 15 --------------- + 1 file changed, 15 deletions(-) + +--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c ++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c +@@ -772,12 +772,6 @@ static bool unicam_all_nodes_streaming(s + return ret; + } + +-static bool unicam_all_nodes_disabled(struct unicam_device *dev) +-{ +- return !dev->node[IMAGE_PAD].streaming && +- !dev->node[METADATA_PAD].streaming; +-} +- + static void unicam_queue_event_sof(struct unicam_device *unicam) + { + struct v4l2_event event = { +@@ -805,15 +799,6 @@ static irqreturn_t unicam_isr(int irq, v + u32 ista, sta; + u64 ts; + +- /* +- * Don't service interrupts if not streaming. +- * Avoids issues if the VPU should enable the +- * peripheral without the kernel knowing (that +- * shouldn't happen, but causes issues if it does). +- */ +- if (unicam_all_nodes_disabled(unicam)) +- return IRQ_NONE; +- + sta = reg_read(unicam, UNICAM_STA); + /* Write value back to clear the interrupts */ + reg_write(unicam, UNICAM_STA, sta); -- cgit v1.2.3