core: check the gateware is correct

e9da030d · Alessandro Rubini · a44b5862 · e9da030d · e9da030d
Commit e9da030d authored Apr 23, 2012 by Alessandro Rubini
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fd-core.c fd-core.c +7 -0

fine-delay.h fine-delay.h +1 -0

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--- a/fd-core.c
+++ b/fd-core.c
@@ -142,6 +142,13 @@ int fd_probe(struct spec_dev *dev)

 	fd->calib = fd_default_calib;

+	/* Check the binary is there */
+	if (readl(fd->regs + FD_REG_IDR) != FD_MAGIC_FPGA) {
+		pr_err("%s: card at %04x:%04x has wrong gateware\n",
+		       __func__, dev->pdev->bus->number, dev->pdev->devfn);
+		return -ENODEV;
+	}
+
 	/* First, hardware reset */
 	fd_do_reset(fd, 1);


--- a/fine-delay.h
+++ b/fine-delay.h
@@ -25,6 +25,7 @@ struct spec_fd {
 };

 #define FD_REGS_OFFSET	0x84000
+#define FD_MAGIC_FPGA	0xf19ede1a	/* FD_REG_IDR content */

 /* Values for the configuration of the acam PLL. Can be changed */
 #define ACAM_DESIRED_BIN	80.9553