gpu: nvgpu: Add NVIDIA GPU Driver

This patch moves the NVIDIA GPU driver to a new location.

Bug 1482562

Change-Id: I24293810b9d0f1504fd9be00135e21dad656ccb6
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/383722
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 94 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/clk_gk20a.h b/drivers/gpu/nvgpu/gk20a/clk_gk20a.h
new file mode 100644
index 00000000..d2665259
--- /dev/null
+++ b/drivers/gpu/nvgpu/gk20a/clk_gk20a.h
@@ -0,0 +1,94 @@
+/*
+ * drivers/video/tegra/host/gk20a/clk_gk20a.h
+ *
+ * GK20A Graphics
+ *
+ * Copyright (c) 2011 - 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef _NVHOST_CLK_GK20A_H_
+#define _NVHOST_CLK_GK20A_H_
+
+#include <linux/mutex.h>
+
+#define GPUFREQ_TABLE_END     ~(u32)1
+enum {
+        /* only one PLL for gk20a */
+        GK20A_GPC_PLL = 0,
+};
+
+struct pll {
+        u32 id;
+        u32 clk_in;     /* MHz */
+        u32 M;
+        u32 N;
+        u32 PL;
+        u32 freq;       /* MHz */
+        bool enabled;
+};
+
+struct pll_parms {
+        u32 min_freq, max_freq; /* MHz */
+        u32 min_vco, max_vco;   /* MHz */
+        u32 min_u,   max_u;     /* MHz */
+        u32 min_M,   max_M;
+        u32 min_N,   max_N;
+        u32 min_PL,  max_PL;
+};
+
+struct clk_gk20a {
+        struct gk20a *g;
+        struct clk *tegra_clk;
+        struct pll gpc_pll;
+        u32 pll_delay; /* default PLL settle time */
+        struct mutex clk_mutex;
+        bool sw_ready;
+        bool clk_hw_on;
+};
+
+struct gpufreq_table_data {
+        unsigned int index;
+        unsigned int frequency; /* MHz */
+};
+
+struct gpufreq_table_data *tegra_gpufreq_table_get(void);
+
+unsigned int tegra_gpufreq_table_size_get(void);
+
+int gk20a_init_clk_support(struct gk20a *g);
+
+unsigned long gk20a_clk_get_rate(struct gk20a *g);
+int gk20a_clk_set_rate(struct gk20a *g, unsigned long rate);
+int gk20a_suspend_clk_support(struct gk20a *g);
+struct clk *gk20a_clk_get(struct gk20a *g);
+long gk20a_clk_round_rate(struct gk20a *g, unsigned long rate);
+
+extern struct pll_parms gpc_pll_params;
+
+#define KHZ 1000
+#define MHZ 1000000
+
+static inline unsigned long rate_gpc2clk_to_gpu(unsigned long rate)
+{
+        /* convert the MHz gpc2clk frequency to Hz gpcpll frequency */
+        return (rate * MHZ) / 2;
+}
+static inline unsigned long rate_gpu_to_gpc2clk(unsigned long rate)
+{
+        /* convert the Hz gpcpll frequency to MHz gpc2clk frequency */
+        return (rate * 2) / MHZ;
+}
+
+#endif /* _NVHOST_CLK_GK20A_H_ */