volt: add support for GK20A

The voltage value are calculated by the hardware characterized
result.

Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/core/os.h b/lib/core/os.h
index aea628eb3..43570fb9c 100644
--- a/lib/core/os.h
+++ b/lib/core/os.h
@@ -73,6 +73,16 @@ typedef dma_addr_t resource_size_t;
 #define upper_32_bits(a) ((a) >> 32)
 #define lower_32_bits(a) ((a) & 0xffffffff)
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#define DIV_ROUND_CLOSEST(x, divisor)(			\
+{							\
+	typeof(x) __x = x;				\
+	typeof(divisor) __d = divisor;			\
+	(((typeof(x))-1) > 0 ||				\
+	 ((typeof(divisor))-1) > 0 || (__x) > 0) ?	\
+		(((__x) + ((__d) / 2)) / (__d)) :	\
+		(((__x) - ((__d) / 2)) / (__d));	\
+}							\
+)
 #define do_div(a,b) (a) = (a) / (b)
 #define div_u64(a,b) (a) / (b)
 #define likely(a) (a)
@@ -1142,15 +1152,36 @@ clk_get_rate(struct clk *clk)
 }
 
 /******************************************************************************
+ * regulator
+ *****************************************************************************/
+
+struct regulator {
+};
+
+static inline int
+regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
+{
+	return -ENOSYS;
+}
+
+static inline int
+regulator_get_voltage(struct regulator *regulator)
+{
+	return -ENOSYS;
+}
+
+/******************************************************************************
  * nouveau drm platform device
  *****************************************************************************/
 
 struct nouveau_platform_gpu {
 	struct clk *clk;
+	struct regulator *vdd;
 };
 
 struct nouveau_platform_device {
 	struct nouveau_platform_gpu *gpu;
+	int gpu_speedo;
 };
 
 #define nv_device_to_platform(x) NULL