gpu: nvgpu: Add GPCPLL parameters to GM20b debugfs

Bug 1555318

Change-Id: I0338e5d46c7f7d910faada0205dccf28aa62d6c2
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/594746
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/clk_gm20b.c b/drivers/gpu/nvgpu/gm20b/clk_gm20b.c
index 29a47f7c..f7404f81 100644
--- a/drivers/gpu/nvgpu/gm20b/clk_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/clk_gm20b.c
@@ -1603,6 +1603,26 @@ static int monitor_get(void *data, u64 *val)
 }
 DEFINE_SIMPLE_ATTRIBUTE(monitor_fops, monitor_get, NULL, "%llu\n");
 
+static int pll_param_show(struct seq_file *s, void *data)
+{
+        seq_printf(s, "ADC offs = %d uV, ADC slope = %d uV, VCO ctrl = 0x%x\n",
+                   gpc_pll_params.uvdet_offs, gpc_pll_params.uvdet_slope,
+                   gpc_pll_params.vco_ctrl);
+        return 0;
+}
+
+static int pll_param_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, pll_param_show, inode->i_private);
+}
+
+static const struct file_operations pll_param_fops = {
+        .open           = pll_param_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 static int clk_gm20b_debugfs_init(struct gk20a *g)
 {
         struct dentry *d;
@@ -1628,6 +1648,16 @@ static int clk_gm20b_debugfs_init(struct gk20a *g)
         if (!d)
                 goto err_out;
 
+        d = debugfs_create_file(
+                "pll_param", S_IRUGO, platform->debugfs, g, &pll_param_fops);
+        if (!d)
+                goto err_out;
+
+        d = debugfs_create_u32("pll_na_mode", S_IRUGO, platform->debugfs,
+                               (u32 *)&g->clk.gpc_pll.mode);
+        if (!d)
+                goto err_out;
+
         return 0;
 
 err_out: