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Thu, 06 Nov 2025 03:34:25 -0800 (PST) From: Bartosz Golaszewski Date: Thu, 06 Nov 2025 12:33:58 +0100 Subject: [PATCH v8 02/11] dmaengine: qcom: bam_dma: Extend the driver's device match data Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251106-qcom-qce-cmd-descr-v8-2-ecddca23ca26@linaro.org> References: <20251106-qcom-qce-cmd-descr-v8-0-ecddca23ca26@linaro.org> In-Reply-To: <20251106-qcom-qce-cmd-descr-v8-0-ecddca23ca26@linaro.org> To: Vinod Koul , Jonathan Corbet , Thara Gopinath , Herbert Xu , "David S. Miller" , Udit Tiwari , Daniel Perez-Zoghbi , Md Sadre Alam Cc: dmaengine@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, Bartosz Golaszewski , Dmitry Baryshkov X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3649; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=0woh03/bgCFE8ePGo1YBxXHVZW/UvQS3qBPjY4r3K2A=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBpDIe7TuUba5IpirBE/7QlEvE19WL7MjL46Cfxj Ixyu8bcGUeJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaQyHuwAKCRARpy6gFHHX cv2ED/9umX73SuQ6RQy//ZjGO8kD59B23ICQgxE5eBgJesW6Dh9L/4P8P0qe1a39NKehoRwIAAC WC17JrjrYo7jS7lOJNwM/WYFuHqy8sc8RFi8xKOg05Jcm1HSjLcs2a7PjwGG6LGl16tReWBoWDj DLtps725G6Ok4kJBOS3oJZCj9CpOpoUjYZWuXlKMDXr6odDSBscU29LWb8H64LXw+sPBACbA+gv 2Nkif4nM3MXiiak/RQTJHBiI2pQe+/hm/Isi6+i2WGlZd1qgfVmlPNOyjb6FCgF06g8kMlSwVbd rHIB3J+U5+3YUzLprmCzNu5b6kB/LtkevfGf6XnOgNdA7yYdi3+byfthWmFZbHC3ZVjqKP7zicg Q6qPXpM/y0766XEm3AQTH93s4+s5u0cOqkuvYu8nRw5qr5hrD8Q6C5GPP5eERLkZizR3+LHxXwD Eqm8tcg/VfbXRbSUw/iQlkAfq1J/RZBOxNasnA77rLnIAViW4WaLt6UQp11o+7jWWb0Rrgiv8Xo 82Bc8Afx9520hSMlGTTEbRYc7VUOgpYQvy1cHzO2sUcBvjcUN8Wl9V4l+kiRmQ9xkRwNpANUJgY QvA793gTzRHkE3r5rlRr9iscIJT1rOr3IojA6XUfpXrI65zswuI4kAx10y2Q7Dlbs+bFUn1sIwZ pdBEsCfyvRy7lXA== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski In preparation for supporting the pipe locking feature flag, extend the amount of information we can carry in device match data: create a separate structure and make the register information one of its fields. This way, in subsequent patches, it will be just a matter of adding a new field to the device data. Reviewed-by: Dmitry Baryshkov Signed-off-by: Bartosz Golaszewski --- drivers/dma/qcom/bam_dma.c | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 2cf060174795fe326abaf053a7a7a10022455586..8861245314b1d13c1abb78f474f= d0749fea52f06 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -111,6 +111,10 @@ struct reg_offset_data { unsigned int pipe_mult, evnt_mult, ee_mult; }; =20 +struct bam_device_data { + const struct reg_offset_data *reg_info; +}; + static const struct reg_offset_data bam_v1_3_reg_info[] =3D { [BAM_CTRL] =3D { 0x0F80, 0x00, 0x00, 0x00 }, [BAM_REVISION] =3D { 0x0F84, 0x00, 0x00, 0x00 }, @@ -140,6 +144,10 @@ static const struct reg_offset_data bam_v1_3_reg_info[= ] =3D { [BAM_P_FIFO_SIZES] =3D { 0x1020, 0x00, 0x40, 0x00 }, }; =20 +static const struct bam_device_data bam_v1_3_data =3D { + .reg_info =3D bam_v1_3_reg_info, +}; + static const struct reg_offset_data bam_v1_4_reg_info[] =3D { [BAM_CTRL] =3D { 0x0000, 0x00, 0x00, 0x00 }, [BAM_REVISION] =3D { 0x0004, 0x00, 0x00, 0x00 }, @@ -169,6 +177,10 @@ static const struct reg_offset_data bam_v1_4_reg_info[= ] =3D { [BAM_P_FIFO_SIZES] =3D { 0x1820, 0x00, 0x1000, 0x00 }, }; =20 +static const struct bam_device_data bam_v1_4_data =3D { + .reg_info =3D bam_v1_4_reg_info, +}; + static const struct reg_offset_data bam_v1_7_reg_info[] =3D { [BAM_CTRL] =3D { 0x00000, 0x00, 0x00, 0x00 }, [BAM_REVISION] =3D { 0x01000, 0x00, 0x00, 0x00 }, @@ -198,6 +210,10 @@ static const struct reg_offset_data bam_v1_7_reg_info[= ] =3D { [BAM_P_FIFO_SIZES] =3D { 0x13820, 0x00, 0x1000, 0x00 }, }; =20 +static const struct bam_device_data bam_v1_7_data =3D { + .reg_info =3D bam_v1_7_reg_info, +}; + /* BAM CTRL */ #define BAM_SW_RST BIT(0) #define BAM_EN BIT(1) @@ -391,7 +407,7 @@ struct bam_device { bool powered_remotely; u32 active_channels; =20 - const struct reg_offset_data *layout; + const struct bam_device_data *dev_data; =20 struct clk *bamclk; int irq; @@ -409,7 +425,7 @@ struct bam_device { static inline void __iomem *bam_addr(struct bam_device *bdev, u32 pipe, enum bam_reg reg) { - const struct reg_offset_data r =3D bdev->layout[reg]; + const struct reg_offset_data r =3D bdev->dev_data->reg_info[reg]; =20 return bdev->regs + r.base_offset + r.pipe_mult * pipe + @@ -1225,9 +1241,9 @@ static void bam_channel_init(struct bam_device *bdev,= struct bam_chan *bchan, } =20 static const struct of_device_id bam_of_match[] =3D { - { .compatible =3D "qcom,bam-v1.3.0", .data =3D &bam_v1_3_reg_info }, - { .compatible =3D "qcom,bam-v1.4.0", .data =3D &bam_v1_4_reg_info }, - { .compatible =3D "qcom,bam-v1.7.0", .data =3D &bam_v1_7_reg_info }, + { .compatible =3D "qcom,bam-v1.3.0", .data =3D &bam_v1_3_data }, + { .compatible =3D "qcom,bam-v1.4.0", .data =3D &bam_v1_4_data }, + { .compatible =3D "qcom,bam-v1.7.0", .data =3D &bam_v1_7_data }, {} }; =20 @@ -1251,7 +1267,7 @@ static int bam_dma_probe(struct platform_device *pdev) return -ENODEV; } =20 - bdev->layout =3D match->data; + bdev->dev_data =3D match->data; =20 bdev->regs =3D devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(bdev->regs)) --=20 2.51.0