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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/fpga/xilinx-selectmap.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/fpga/xilinx-selectmap.c')
-rw-r--r--drivers/fpga/xilinx-selectmap.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/fpga/xilinx-selectmap.c b/drivers/fpga/xilinx-selectmap.c
new file mode 100644
index 000000000..d0cbb5fdf
--- /dev/null
+++ b/drivers/fpga/xilinx-selectmap.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Xilinx Spartan6 and 7 Series SelectMAP interface driver
+ *
+ * (C) 2024 Charles Perry <charles.perry@savoirfairelinux.com>
+ *
+ * Manage Xilinx FPGA firmware loaded over the SelectMAP configuration
+ * interface.
+ */
+
+#include "xilinx-core.h"
+
+#include <linux/gpio/consumer.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+struct xilinx_selectmap_conf {
+ struct xilinx_fpga_core core;
+ void __iomem *base;
+};
+
+#define to_xilinx_selectmap_conf(obj) \
+ container_of(obj, struct xilinx_selectmap_conf, core)
+
+static int xilinx_selectmap_write(struct xilinx_fpga_core *core,
+ const char *buf, size_t count)
+{
+ struct xilinx_selectmap_conf *conf = to_xilinx_selectmap_conf(core);
+ size_t i;
+
+ for (i = 0; i < count; ++i)
+ writeb(buf[i], conf->base);
+
+ return 0;
+}
+
+static int xilinx_selectmap_probe(struct platform_device *pdev)
+{
+ struct xilinx_selectmap_conf *conf;
+ struct gpio_desc *gpio;
+ void __iomem *base;
+
+ conf = devm_kzalloc(&pdev->dev, sizeof(*conf), GFP_KERNEL);
+ if (!conf)
+ return -ENOMEM;
+
+ conf->core.dev = &pdev->dev;
+ conf->core.write = xilinx_selectmap_write;
+
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
+ if (IS_ERR(base))
+ return dev_err_probe(&pdev->dev, PTR_ERR(base),
+ "ioremap error\n");
+ conf->base = base;
+
+ /* CSI_B is active low */
+ gpio = devm_gpiod_get_optional(&pdev->dev, "csi", GPIOD_OUT_HIGH);
+ if (IS_ERR(gpio))
+ return dev_err_probe(&pdev->dev, PTR_ERR(gpio),
+ "Failed to get CSI_B gpio\n");
+
+ /* RDWR_B is active low */
+ gpio = devm_gpiod_get_optional(&pdev->dev, "rdwr", GPIOD_OUT_HIGH);
+ if (IS_ERR(gpio))
+ return dev_err_probe(&pdev->dev, PTR_ERR(gpio),
+ "Failed to get RDWR_B gpio\n");
+
+ return xilinx_core_probe(&conf->core);
+}
+
+static const struct of_device_id xlnx_selectmap_of_match[] = {
+ { .compatible = "xlnx,fpga-xc7s-selectmap", }, // Spartan-7
+ { .compatible = "xlnx,fpga-xc7a-selectmap", }, // Artix-7
+ { .compatible = "xlnx,fpga-xc7k-selectmap", }, // Kintex-7
+ { .compatible = "xlnx,fpga-xc7v-selectmap", }, // Virtex-7
+ {},
+};
+MODULE_DEVICE_TABLE(of, xlnx_selectmap_of_match);
+
+static struct platform_driver xilinx_selectmap_driver = {
+ .driver = {
+ .name = "xilinx-selectmap",
+ .of_match_table = xlnx_selectmap_of_match,
+ },
+ .probe = xilinx_selectmap_probe,
+};
+
+module_platform_driver(xilinx_selectmap_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Charles Perry <charles.perry@savoirfairelinux.com>");
+MODULE_DESCRIPTION("Load Xilinx FPGA firmware over SelectMap");