[PATCH v3 03/14] intel_gna: read hardware info in the driver
From: Maciej Kwapulinski <hidden>
Date: 2021-05-13 11:02:18
Also in:
lkml
Subsystem:
char and misc drivers, the rest · Maintainers:
Arnd Bergmann, Greg Kroah-Hartman, Linus Torvalds
From: Tomasz Jankowski <redacted> Get the hardware information from register MMIO_IBUFFS Signed-off-by: Tomasz Jankowski <redacted> Tested-by: Savo Novakovic <redacted> Co-developed-by: Jianxun Zhang <redacted> Signed-off-by: Jianxun Zhang <redacted> Co-developed-by: Maciej Kwapulinski <redacted> Signed-off-by: Maciej Kwapulinski <redacted> --- drivers/misc/intel/gna/device.c | 4 ++++ drivers/misc/intel/gna/device.h | 1 + drivers/misc/intel/gna/hw.h | 4 ++++ 3 files changed, 9 insertions(+)
diff --git a/drivers/misc/intel/gna/device.c b/drivers/misc/intel/gna/device.c
index 8722935d26bf..45b4b6df64ef 100644
--- a/drivers/misc/intel/gna/device.c
+++ b/drivers/misc/intel/gna/device.c@@ -21,6 +21,7 @@ int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem static atomic_t dev_last_idx = ATOMIC_INIT(-1); struct gna_private *gna_priv; const char *dev_misc_name; + u32 bld_reg; int ret; gna_priv = devm_kzalloc(parent, sizeof(*gna_priv), GFP_KERNEL);
@@ -48,6 +49,9 @@ int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem } } + bld_reg = gna_reg_read(gna_priv, GNA_MMIO_IBUFFS); + gna_priv->hw_info.in_buf_s = bld_reg & GENMASK(7, 0); + return 0; }
diff --git a/drivers/misc/intel/gna/device.h b/drivers/misc/intel/gna/device.h
index a188f482a273..057dec0e1983 100644
--- a/drivers/misc/intel/gna/device.h
+++ b/drivers/misc/intel/gna/device.h@@ -24,6 +24,7 @@ struct gna_private { /* device related resources */ void __iomem *iobase; struct gna_dev_info info; + struct gna_hw_info hw_info; }; int gna_probe(struct device *parent, struct gna_dev_info *dev_info, void __iomem *iobase);
diff --git a/drivers/misc/intel/gna/hw.h b/drivers/misc/intel/gna/hw.h
index f9c0566cbe60..f61792f9dd52 100644
--- a/drivers/misc/intel/gna/hw.h
+++ b/drivers/misc/intel/gna/hw.h@@ -47,6 +47,10 @@ struct gna_desc_info { struct gna_mmu_info mmu_info; }; +struct gna_hw_info { + u8 in_buf_s; +}; + struct gna_dev_info { u32 hwid; u32 num_pagetables;
--
2.28.0