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gpu: nvgpu: Support new fuse driver for gm20b

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Tegra fuse driver no longer supported on k4.4

Bug 200233943

Change-Id: I31b58d947436a51ff57b16f7903e9ef8daaf66fc
Signed-off-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-on: http://git-master/r/1242480
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Peter Boonstoppel
2016-10-25 12:59:01 -07:00
committed by mobile promotions
parent daaa9f030c
commit 30de7ab4f7
1 changed files with 49 additions and 0 deletions
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49
drivers/gpu/nvgpu/gm20b/clk_gm20b.c
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@@ -22,7 +22,11 @@
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/clk/tegra.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
#include <soc/tegra/fuse.h>
#else
#include <linux/tegra-fuse.h>
#endif
#include "gk20a/gk20a.h"
#include "hw_trim_gm20b.h"
@@ -240,6 +244,51 @@ found_match:
/* GPCPLL NA/DVFS mode methods */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
#define FUSE_RESERVED_CALIB 0x204
static inline int fuse_get_gpcpll_adc_rev(u32 val)
{
return (val >> 30) & 0x3;
}
static inline int fuse_get_gpcpll_adc_slope_uv(u32 val)
{
/* Integer part in mV * 1000 + fractional part in uV */
return ((val >> 24) & 0x3f) * 1000 + ((val >> 14) & 0x3ff);
}
static inline int fuse_get_gpcpll_adc_intercept_uv(u32 val)
{
/* Integer part in mV * 1000 + fractional part in 100uV */
return ((val >> 4) & 0x3ff) * 1000 + ((val >> 0) & 0xf) * 100;
}
static int tegra_fuse_calib_gpcpll_get_adc(int *slope_uv, int *intercept_uv)
{
u32 val;
int ret;
ret = tegra_fuse_readl(FUSE_RESERVED_CALIB, &val);
if (ret)
return ret;
if (!fuse_get_gpcpll_adc_rev(val))
return -EINVAL;
*slope_uv = fuse_get_gpcpll_adc_slope_uv(val);
*intercept_uv = fuse_get_gpcpll_adc_intercept_uv(val);
return 0;
}
#ifdef CONFIG_TEGRA_USE_NA_GPCPLL
static bool tegra_fuse_can_use_na_gpcpll(void)
{
return tegra_sku_info.gpu_speedo_id;
}
#endif
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) */
/*
* Read ADC characteristic parmeters from fuses.
* Determine clibration settings.