This adds a module parameter to get the program bus width as an
input rather than hardcoding it, and checks off a TODO item.
Signed-off-by: Rahul Gottipati <rahul.blr97@xxxxxxxxx>
---
drivers/staging/gs_fpgaboot/gs_fpgaboot.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c b/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
index 3e154562c64d..3d79e046c060 100644
--- a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
+++ b/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
@@ -32,6 +32,10 @@ static char *file = "xlinx_fpga_firmware.bit";
module_param(file, charp, 0444);
MODULE_PARM_DESC(file, "Xilinx FPGA firmware file.");
+static unsigned int bus_width_bytes = 2;
+module_param(bus_width_bytes, uint, 0444);
+MODULE_PARM_DESC(bus_width_bytes, "Program bus width in bytes.");
+
static void read_bitstream(u8 *bitdata, u8 *buf, int *offset, int rdsize)
{
memcpy(buf, bitdata + *offset, rdsize);
@@ -319,7 +323,15 @@ static int gs_fpgaboot(void)
goto err_out2;
}
- err = gs_download_image(fimage, bus_2byte);
+ if (bus_width_bytes == 2) {
+ err = gs_download_image(fimage, bus_2byte);
+ } else if (bus_width_bytes == 1) {
+ err = gs_download_image(fimage, bus_1byte);
+ } else {
+ pr_err("unsupported program bus width\n");
+ goto err_out2;
+ }
+
if (err) {
pr_err("gs_download_image error\n");
goto err_out2;
--
2.25.1
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