diff options
Diffstat (limited to 'target/linux/at91/patches-5.10/170-media-atmel-atmel-isc-add-DMA-to-register-offsets.patch')
| -rw-r--r-- | target/linux/at91/patches-5.10/170-media-atmel-atmel-isc-add-DMA-to-register-offsets.patch | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/target/linux/at91/patches-5.10/170-media-atmel-atmel-isc-add-DMA-to-register-offsets.patch b/target/linux/at91/patches-5.10/170-media-atmel-atmel-isc-add-DMA-to-register-offsets.patch new file mode 100644 index 0000000000..92f6f3ead6 --- /dev/null +++ b/target/linux/at91/patches-5.10/170-media-atmel-atmel-isc-add-DMA-to-register-offsets.patch @@ -0,0 +1,121 @@ +From 7173e54070a9b530c8c16e0a507be71385133abd Mon Sep 17 00:00:00 2001 +From: Eugen Hristev <eugen.hristev@microchip.com> +Date: Tue, 13 Apr 2021 12:57:12 +0200 +Subject: [PATCH 170/247] media: atmel: atmel-isc: add DMA to register offsets + +The DMA submodule is a part of the atmel-isc pipeline, and stands for +Direct Memory Access. It acts like a master on the AXI bus of the SoC, and +can directly write the RAM area with the pixel data from the ISC internal +sram. +Add dma to the reg offsets struct. +This will allow different products to have a different reg offset for this +particular module. + +Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> +Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> +Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> +--- + drivers/media/platform/atmel/atmel-isc-base.c | 19 ++++++++++++------- + drivers/media/platform/atmel/atmel-isc-regs.h | 3 +++ + drivers/media/platform/atmel/atmel-isc.h | 2 ++ + .../media/platform/atmel/atmel-sama5d2-isc.c | 1 + + 4 files changed, 18 insertions(+), 7 deletions(-) + +diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c +index 5c95aa45cf6c..e010429fc44d 100644 +--- a/drivers/media/platform/atmel/atmel-isc-base.c ++++ b/drivers/media/platform/atmel/atmel-isc-base.c +@@ -601,16 +601,20 @@ static void isc_start_dma(struct isc_device *isc) + ISC_PFE_CFG0_COLEN | ISC_PFE_CFG0_ROWEN); + + addr0 = vb2_dma_contig_plane_dma_addr(&isc->cur_frm->vb.vb2_buf, 0); +- regmap_write(regmap, ISC_DAD0, addr0); ++ regmap_write(regmap, ISC_DAD0 + isc->offsets.dma, addr0); + + switch (isc->config.fourcc) { + case V4L2_PIX_FMT_YUV420: +- regmap_write(regmap, ISC_DAD1, addr0 + (sizeimage * 2) / 3); +- regmap_write(regmap, ISC_DAD2, addr0 + (sizeimage * 5) / 6); ++ regmap_write(regmap, ISC_DAD1 + isc->offsets.dma, ++ addr0 + (sizeimage * 2) / 3); ++ regmap_write(regmap, ISC_DAD2 + isc->offsets.dma, ++ addr0 + (sizeimage * 5) / 6); + break; + case V4L2_PIX_FMT_YUV422P: +- regmap_write(regmap, ISC_DAD1, addr0 + sizeimage / 2); +- regmap_write(regmap, ISC_DAD2, addr0 + (sizeimage * 3) / 4); ++ regmap_write(regmap, ISC_DAD1 + isc->offsets.dma, ++ addr0 + sizeimage / 2); ++ regmap_write(regmap, ISC_DAD2 + isc->offsets.dma, ++ addr0 + (sizeimage * 3) / 4); + break; + default: + break; +@@ -618,7 +622,8 @@ static void isc_start_dma(struct isc_device *isc) + + dctrl_dview = isc->config.dctrl_dview; + +- regmap_write(regmap, ISC_DCTRL, dctrl_dview | ISC_DCTRL_IE_IS); ++ regmap_write(regmap, ISC_DCTRL + isc->offsets.dma, ++ dctrl_dview | ISC_DCTRL_IE_IS); + spin_lock(&isc->awb_lock); + regmap_write(regmap, ISC_CTRLEN, ISC_CTRL_CAPTURE); + spin_unlock(&isc->awb_lock); +@@ -731,7 +736,7 @@ static int isc_configure(struct isc_device *isc) + regmap_update_bits(regmap, ISC_RLP_CFG + isc->offsets.rlp, + ISC_RLP_CFG_MODE_MASK, rlp_mode); + +- regmap_write(regmap, ISC_DCFG, dcfg); ++ regmap_write(regmap, ISC_DCFG + isc->offsets.dma, dcfg); + + /* Set the pipeline */ + isc_set_pipeline(isc, pipeline); +diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h +index 0ab280ab59ec..4940998c82a2 100644 +--- a/drivers/media/platform/atmel/atmel-isc-regs.h ++++ b/drivers/media/platform/atmel/atmel-isc-regs.h +@@ -247,6 +247,9 @@ + + #define ISC_HIS_CFG_RAR BIT(8) + ++/* Offset for DMA register specific to sama5d2 product */ ++#define ISC_SAMA5D2_DMA_OFFSET 0 ++ + /* DMA Configuration Register */ + #define ISC_DCFG 0x000003e0 + #define ISC_DCFG_IMODE_PACKED8 0x0 +diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h +index 97ec4c58297e..bea545327d3d 100644 +--- a/drivers/media/platform/atmel/atmel-isc.h ++++ b/drivers/media/platform/atmel/atmel-isc.h +@@ -151,6 +151,7 @@ struct isc_ctrls { + * @sub420: Offset for the SUB420 register + * @rlp: Offset for the RLP register + * @his: Offset for the HIS related registers ++ * @dma: Offset for the DMA related registers + */ + struct isc_reg_offsets { + u32 csc; +@@ -159,6 +160,7 @@ struct isc_reg_offsets { + u32 sub420; + u32 rlp; + u32 his; ++ u32 dma; + }; + + /* +diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c +index db93cb76c08b..bfd56ac5c921 100644 +--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c ++++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c +@@ -257,6 +257,7 @@ static int atmel_isc_probe(struct platform_device *pdev) + isc->offsets.sub420 = ISC_SAMA5D2_SUB420_OFFSET; + isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET; + isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET; ++ isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET; + + /* sama5d2-isc - 8 bits per beat */ + isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8; +-- +2.32.0 + |