linux-kernel - [PATCH 2/2] mfd: arizona: Mark DSP clocking register as volatile

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Date:	Thu, 20 Mar 2014 16:49:24 +0000
From:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:	lee.jones@...aro.org
Cc:	sameo@...ux.intel.com, patches@...nsource.wolfsonmicro.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] mfd: arizona: Mark DSP clocking register as volatile

The DSPs will often control there own clock speeds whilst running as
such we should mark the registers controlling this as volatile.

Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
 drivers/mfd/wm5102-tables.c |    1 +
 drivers/mfd/wm5110-tables.c |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c
index 187ee86..a856ac7 100644
--- a/drivers/mfd/wm5102-tables.c
+++ b/drivers/mfd/wm5102-tables.c
@@ -1925,6 +1925,7 @@ static bool wm5102_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_AOD_IRQ1:
 	case ARIZONA_AOD_IRQ2:
 	case ARIZONA_AOD_IRQ_RAW_STATUS:
+	case ARIZONA_DSP1_CLOCKING_1:
 	case ARIZONA_DSP1_STATUS_1:
 	case ARIZONA_DSP1_STATUS_2:
 	case ARIZONA_DSP1_STATUS_3:
diff --git a/drivers/mfd/wm5110-tables.c b/drivers/mfd/wm5110-tables.c
index 178e041..1942b6f 100644
--- a/drivers/mfd/wm5110-tables.c
+++ b/drivers/mfd/wm5110-tables.c
@@ -2652,6 +2652,7 @@ static bool wm5110_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_DSP1_SCRATCH_1:
 	case ARIZONA_DSP1_SCRATCH_2:
 	case ARIZONA_DSP1_SCRATCH_3:
+	case ARIZONA_DSP1_CLOCKING_1:
 	case ARIZONA_DSP2_STATUS_1:
 	case ARIZONA_DSP2_STATUS_2:
 	case ARIZONA_DSP2_STATUS_3:
@@ -2680,6 +2681,7 @@ static bool wm5110_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_DSP2_SCRATCH_1:
 	case ARIZONA_DSP2_SCRATCH_2:
 	case ARIZONA_DSP2_SCRATCH_3:
+	case ARIZONA_DSP2_CLOCKING_1:
 	case ARIZONA_DSP3_STATUS_1:
 	case ARIZONA_DSP3_STATUS_2:
 	case ARIZONA_DSP3_STATUS_3:
@@ -2708,6 +2710,7 @@ static bool wm5110_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_DSP3_SCRATCH_1:
 	case ARIZONA_DSP3_SCRATCH_2:
 	case ARIZONA_DSP3_SCRATCH_3:
+	case ARIZONA_DSP3_CLOCKING_1:
 	case ARIZONA_DSP4_STATUS_1:
 	case ARIZONA_DSP4_STATUS_2:
 	case ARIZONA_DSP4_STATUS_3:
@@ -2736,6 +2739,7 @@ static bool wm5110_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_DSP4_SCRATCH_1:
 	case ARIZONA_DSP4_SCRATCH_2:
 	case ARIZONA_DSP4_SCRATCH_3:
+	case ARIZONA_DSP4_CLOCKING_1:
 		return true;
 	default:
 		return wm5110_is_adsp_memory(dev, reg);
-- 
1.7.2.5

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