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Message-Id: <1369391960-27320-2-git-send-email-fabio.baltieri@linaro.org>
Date: Fri, 24 May 2013 12:39:15 +0200
From: Fabio Baltieri <fabio.baltieri@...aro.org>
To: Mark Brown <broonie@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, alsa-devel@...a-project.org,
linux-kernel@...r.kernel.org,
Linus Walleij <linus.walleij@...aro.org>,
Lee Jones <lee.jones@...aro.org>,
Ola Lilja <ola.o.lilja@...ricsson.com>,
Fabio Baltieri <fabio.baltieri@...aro.org>
Subject: [PATCH 1/6] ASoC: ux500: Drop pinctrl sleep support
Drop pinctrl default/sleep state switching code, as it was breaking the
capture interface by putting the I2S pins in hi-z mode regardless of its
usage status, and not giving any real benefit.
Pinctrl default mode configuration is already managed automatically by a
specific pinctrl hog.
Signed-off-by: Fabio Baltieri <fabio.baltieri@...aro.org>
---
sound/soc/ux500/ux500_msp_i2s.c | 56 ++---------------------------------------
sound/soc/ux500/ux500_msp_i2s.h | 6 -----
2 files changed, 2 insertions(+), 60 deletions(-)
diff --git a/sound/soc/ux500/ux500_msp_i2s.c b/sound/soc/ux500/ux500_msp_i2s.c
index f2db6c9..b029b2d 100644
--- a/sound/soc/ux500/ux500_msp_i2s.c
+++ b/sound/soc/ux500/ux500_msp_i2s.c
@@ -15,7 +15,6 @@
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/pinctrl/consumer.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/io.h>
@@ -26,9 +25,6 @@
#include "ux500_msp_i2s.h"
-/* MSP1/3 Tx/Rx usage protection */
-static DEFINE_SPINLOCK(msp_rxtx_lock);
-
/* Protocol desciptors */
static const struct msp_protdesc prot_descs[] = {
{ /* I2S */
@@ -356,24 +352,8 @@ static int configure_multichannel(struct ux500_msp *msp,
static int enable_msp(struct ux500_msp *msp, struct ux500_msp_config *config)
{
- int status = 0, retval = 0;
+ int status = 0;
u32 reg_val_DMACR, reg_val_GCR;
- unsigned long flags;
-
- /* Check msp state whether in RUN or CONFIGURED Mode */
- if (msp->msp_state == MSP_STATE_IDLE) {
- spin_lock_irqsave(&msp_rxtx_lock, flags);
- if (msp->pinctrl_rxtx_ref == 0 &&
- !(IS_ERR(msp->pinctrl_p) || IS_ERR(msp->pinctrl_def))) {
- retval = pinctrl_select_state(msp->pinctrl_p,
- msp->pinctrl_def);
- if (retval)
- pr_err("could not set MSP defstate\n");
- }
- if (!retval)
- msp->pinctrl_rxtx_ref++;
- spin_unlock_irqrestore(&msp_rxtx_lock, flags);
- }
/* Configure msp with protocol dependent settings */
configure_protocol(msp, config);
@@ -630,8 +610,7 @@ int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd, int direction)
int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir)
{
- int status = 0, retval = 0;
- unsigned long flags;
+ int status = 0;
dev_dbg(msp->dev, "%s: Enter (dir = 0x%01x).\n", __func__, dir);
@@ -643,18 +622,6 @@ int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir)
(~(FRAME_GEN_ENABLE | SRG_ENABLE))),
msp->registers + MSP_GCR);
- spin_lock_irqsave(&msp_rxtx_lock, flags);
- WARN_ON(!msp->pinctrl_rxtx_ref);
- msp->pinctrl_rxtx_ref--;
- if (msp->pinctrl_rxtx_ref == 0 &&
- !(IS_ERR(msp->pinctrl_p) || IS_ERR(msp->pinctrl_sleep))) {
- retval = pinctrl_select_state(msp->pinctrl_p,
- msp->pinctrl_sleep);
- if (retval)
- pr_err("could not set MSP sleepstate\n");
- }
- spin_unlock_irqrestore(&msp_rxtx_lock, flags);
-
writel(0, msp->registers + MSP_GCR);
writel(0, msp->registers + MSP_TCF);
writel(0, msp->registers + MSP_RCF);
@@ -743,25 +710,6 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev,
dev_dbg(&pdev->dev, "I2S device-name: '%s'\n", i2s_cont->name);
msp->i2s_cont = i2s_cont;
- msp->pinctrl_p = pinctrl_get(msp->dev);
- if (IS_ERR(msp->pinctrl_p))
- dev_err(&pdev->dev, "could not get MSP pinctrl\n");
- else {
- msp->pinctrl_def = pinctrl_lookup_state(msp->pinctrl_p,
- PINCTRL_STATE_DEFAULT);
- if (IS_ERR(msp->pinctrl_def)) {
- dev_err(&pdev->dev,
- "could not get MSP defstate (%li)\n",
- PTR_ERR(msp->pinctrl_def));
- }
- msp->pinctrl_sleep = pinctrl_lookup_state(msp->pinctrl_p,
- PINCTRL_STATE_SLEEP);
- if (IS_ERR(msp->pinctrl_sleep))
- dev_err(&pdev->dev,
- "could not get MSP idlestate (%li)\n",
- PTR_ERR(msp->pinctrl_def));
- }
-
return 0;
}
diff --git a/sound/soc/ux500/ux500_msp_i2s.h b/sound/soc/ux500/ux500_msp_i2s.h
index e5cd105..8ce014e 100644
--- a/sound/soc/ux500/ux500_msp_i2s.h
+++ b/sound/soc/ux500/ux500_msp_i2s.h
@@ -528,12 +528,6 @@ struct ux500_msp {
int loopback_enable;
u32 backup_regs[MAX_MSP_BACKUP_REGS];
unsigned int f_bitclk;
- /* Pin modes */
- struct pinctrl *pinctrl_p;
- struct pinctrl_state *pinctrl_def;
- struct pinctrl_state *pinctrl_sleep;
- /* Reference Count */
- int pinctrl_rxtx_ref;
};
struct ux500_msp_dma_params {
--
1.8.2
--
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