diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0970-drm-vc4-txp-Handle-40-bits-DMA-Addresses.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-0970-drm-vc4-txp-Handle-40-bits-DMA-Addresses.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0970-drm-vc4-txp-Handle-40-bits-DMA-Addresses.patch b/target/linux/bcm27xx/patches-6.1/950-0970-drm-vc4-txp-Handle-40-bits-DMA-Addresses.patch new file mode 100644 index 0000000000..5d1fbcb119 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-0970-drm-vc4-txp-Handle-40-bits-DMA-Addresses.patch @@ -0,0 +1,59 @@ +From ddb9aa80692ed5d35e4ee4688c36789620f78c5c Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Fri, 14 Apr 2023 17:47:11 +0200 +Subject: [PATCH] drm/vc4: txp: Handle 40-bits DMA Addresses + +The BCM2712 MOP and MOPLET can handle addresses larger than 32bits +through an extra register. We can easily support it and make it +conditional based on the compatible through a boolean in our variant +structure. + +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +--- + drivers/gpu/drm/vc4/vc4_drv.h | 1 + + drivers/gpu/drm/vc4/vc4_txp.c | 10 +++++++++- + 2 files changed, 10 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/vc4/vc4_drv.h ++++ b/drivers/gpu/drm/vc4/vc4_drv.h +@@ -565,6 +565,7 @@ struct vc4_txp_data { + struct vc4_crtc_data base; + unsigned int has_byte_enable:1; + unsigned int size_minus_one:1; ++ unsigned int supports_40bit_addresses:1; + }; + + extern const struct vc4_txp_data bcm2835_txp_data; +--- a/drivers/gpu/drm/vc4/vc4_txp.c ++++ b/drivers/gpu/drm/vc4/vc4_txp.c +@@ -145,6 +145,8 @@ + /* Number of lines received and committed to memory. */ + #define TXP_PROGRESS 0x10 + ++#define TXP_DST_PTR_HIGH 0x1c ++ + #define TXP_READ(offset) \ + ({ \ + kunit_fail_current_test("Accessing a register in a unit test!\n"); \ +@@ -297,6 +299,7 @@ static void vc4_txp_connector_atomic_com + struct drm_framebuffer *fb; + unsigned int hdisplay; + unsigned int vdisplay; ++ dma_addr_t addr; + u32 ctrl; + int idx; + int i; +@@ -334,7 +337,12 @@ static void vc4_txp_connector_atomic_com + return; + + gem = drm_fb_dma_get_gem_obj(fb, 0); +- TXP_WRITE(TXP_DST_PTR, gem->dma_addr + fb->offsets[0]); ++ addr = gem->dma_addr + fb->offsets[0]; ++ TXP_WRITE(TXP_DST_PTR, lower_32_bits(addr)); ++ ++ if (txp_data->supports_40bit_addresses) ++ TXP_WRITE(TXP_DST_PTR_HIGH, upper_32_bits(addr) & 0xff); ++ + TXP_WRITE(TXP_DST_PITCH, fb->pitches[0]); + + hdisplay = mode->hdisplay ?: 1; |