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Simple PCIe FMC carrier SPEC
Commit 8dd2efb8 authored by Federico Vaga's avatar Federico Vaga
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sw:drv: create an app_reset function 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 96e9577d
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Showing with 21 additions and 9 deletions
software/kernel/spec-core-fpga.c
View file @ 8dd2efb8
......@@ -13,6 +13,7 @@
#include <linux/spi/flash.h>
#include <linux/bitops.h>
#include <linux/fmc.h>
#include <linux/delay.h>
#include "spec.h"
#include "spec-compat.h"
......@@ -471,6 +472,18 @@ enum spec_fpga_csr_resets {
SPEC_FPGA_CSR_RESETS_APP = BIT(1),
};
static void spec_fpga_app_reset(struct spec_fpga *spec_fpga, bool val)
{
uint32_t resets;
resets = ioread32(spec_fpga->fpga + SPEC_FPGA_CSR_RESETS);
if (val)
resets |= SPEC_FPGA_CSR_RESETS_APP;
else
resets &= ~SPEC_FPGA_CSR_RESETS_APP;
iowrite32(resets, spec_fpga->fpga + SPEC_FPGA_CSR_RESETS);
}
static ssize_t reset_app_show(struct device *dev,
struct device_attribute *attr,
char *buf)
......@@ -486,20 +499,14 @@ static ssize_t reset_app_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct spec_fpga *spec_fpga = to_spec_fpga(dev);
uint32_t resets;
long val;
int err;
err =kstrtol(buf, 10, &val);
err = kstrtol(buf, 10, &val);
if (err)
return err;
resets = ioread32(spec_fpga->fpga + SPEC_FPGA_CSR_RESETS);
if (val)
resets |= SPEC_FPGA_CSR_RESETS_APP;
else
resets &= ~SPEC_FPGA_CSR_RESETS_APP;
iowrite32(resets, spec_fpga->fpga + SPEC_FPGA_CSR_RESETS);
spec_fpga_app_reset(to_spec_fpga(dev), val);
return count;
}
......@@ -684,6 +691,11 @@ static int spec_fpga_app_init(struct spec_fpga *spec_fpga)
if (err)
return err;
spec_fpga_app_reset(spec_fpga, true);
mdelay(1);
spec_fpga_app_reset(spec_fpga, false);
mdelay(1);
pdev = platform_device_register_resndata(&spec_fpga->dev,
app_name, PLATFORM_DEVID_AUTO,
res, res_n,
......
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