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authorLee Jones <lee.jones@linaro.org>2012-09-14 16:16:08 +0100
committerLee Jones <lee.jones@linaro.org>2012-09-20 09:10:56 +0200
commit5ca032ee21cdabd08fb368ce3f02fa8906b0ef5f (patch)
treee77e91004f3e7608c0d6d0e2932fbb5e7881d808 /sound/soc/ux500
parent5698bd757d55b1bb87edd1a9744ab09c142abfc2 (diff)
ASoC: Ux500: Move MSP pinctrl setup into the MSP driver
In the initial submission of the MSP driver msp1 and msp3's associated pinctrl mechanism was passed back to platform code using a plat_init() call-back routine, but it has no place in platform code. The MSP driver should set this up for the appropriate ports. Instead we use a use_pinctrl identifier which is passed from platform_data/Device Tree which indicates which ports should use pinctrl. Acked-by: Ola Lilja <ola.o.lilja@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'sound/soc/ux500')
-rw-r--r--sound/soc/ux500/ux500_msp_i2s.c67
-rw-r--r--sound/soc/ux500/ux500_msp_i2s.h8
2 files changed, 57 insertions, 18 deletions
diff --git a/sound/soc/ux500/ux500_msp_i2s.c b/sound/soc/ux500/ux500_msp_i2s.c
index eb85113d472a..12d7f567420d 100644
--- a/sound/soc/ux500/ux500_msp_i2s.c
+++ b/sound/soc/ux500/ux500_msp_i2s.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/delay.h>
#include <linux/slab.h>
@@ -25,6 +26,9 @@
#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 */
@@ -352,17 +356,23 @@ static int configure_multichannel(struct ux500_msp *msp,
static int enable_msp(struct ux500_msp *msp, struct ux500_msp_config *config)
{
- int status = 0;
+ int status = 0, retval = 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) && (msp->plat_init)) {
- status = msp->plat_init();
- if (status) {
- dev_err(msp->dev, "%s: ERROR: Failed to init MSP (%d)!\n",
- __func__, status);
- return status;
+ 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 */
@@ -620,7 +630,8 @@ 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;
+ int status = 0, retval = 0;
+ unsigned long flags;
dev_dbg(msp->dev, "%s: Enter (dir = 0x%01x).\n", __func__, dir);
@@ -631,12 +642,19 @@ int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir)
writel((readl(msp->registers + MSP_GCR) &
(~(FRAME_GEN_ENABLE | SRG_ENABLE))),
msp->registers + MSP_GCR);
- if (msp->plat_exit)
- status = msp->plat_exit();
- if (status)
- dev_warn(msp->dev,
- "%s: WARN: ux500_msp_i2s_exit failed (%d)!\n",
- __func__, status);
+
+ 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);
@@ -675,8 +693,6 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev,
msp->id = platform_data->id;
msp->dev = &pdev->dev;
- msp->plat_init = platform_data->msp_i2s_init;
- msp->plat_exit = platform_data->msp_i2s_exit;
msp->dma_cfg_rx = platform_data->msp_i2s_dma_rx;
msp->dma_cfg_tx = platform_data->msp_i2s_dma_tx;
@@ -713,6 +729,25 @@ 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 2d9136da9865..1311c0df7628 100644
--- a/sound/soc/ux500/ux500_msp_i2s.h
+++ b/sound/soc/ux500/ux500_msp_i2s.h
@@ -524,14 +524,18 @@ struct ux500_msp {
struct dma_chan *rx_pipeid;
enum msp_state msp_state;
int (*transfer) (struct ux500_msp *msp, struct i2s_message *message);
- int (*plat_init) (void);
- int (*plat_exit) (void);
struct timer_list notify_timer;
int def_elem_len;
unsigned int dir_busy;
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 {