From cd1506736f3a77429f619ede817a119a7ff5f7e5 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Fri, 30 Mar 2012 17:07:17 -0600
Subject: [PATCH] ASoC: tegra: ensure clocks are enabled when touching
registers
Debugfs files could be accessed any time, so explicitly enable clocks
when reading registers to generate debugfs file content.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
sound/soc/tegra/tegra_i2s.c | 4 ++++
sound/soc/tegra/tegra_spdif.c | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/sound/soc/tegra/tegra_i2s.c b/sound/soc/tegra/tegra_i2s.c
index 33509de52540b..2d98c925c0aa4 100644
--- a/sound/soc/tegra/tegra_i2s.c
+++ b/sound/soc/tegra/tegra_i2s.c
@@ -79,11 +79,15 @@ static int tegra_i2s_show(struct seq_file *s, void *unused)
struct tegra_i2s *i2s = s->private;
int i;
+ clk_enable(i2s->clk_i2s);
+
for (i = 0; i < ARRAY_SIZE(regs); i++) {
u32 val = tegra_i2s_read(i2s, regs[i].offset);
seq_printf(s, "%s = %08x\n", regs[i].name, val);
}
+ clk_disable(i2s->clk_i2s);
+
return 0;
}
diff --git a/sound/soc/tegra/tegra_spdif.c b/sound/soc/tegra/tegra_spdif.c
index 475428cf270e0..9ff2c601445f4 100644
--- a/sound/soc/tegra/tegra_spdif.c
+++ b/sound/soc/tegra/tegra_spdif.c
@@ -79,11 +79,15 @@ static int tegra_spdif_show(struct seq_file *s, void *unused)
struct tegra_spdif *spdif = s->private;
int i;
+ clk_enable(spdif->clk_spdif_out);
+
for (i = 0; i < ARRAY_SIZE(regs); i++) {
u32 val = tegra_spdif_read(spdif, regs[i].offset);
seq_printf(s, "%s = %08x\n", regs[i].name, val);
}
+ clk_disable(spdif->clk_spdif_out);
+
return 0;
}
--
2.30.2