ASoC: fsi: ensures process inside master lock

Bit operation for fsi_master should be done inside master lock.
But soft-reset/interrupt operation were outside of it.
This patch modify this problem.
It still allow to INT_ST outside-operation on fsi_interrupt,
but it is not problem.
Because this register doesn't need the bit operation.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 993abb7..db91349 100644 (file)
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -79,6 +79,12 @@
 #define INT_A_IN       (1 << 4)
 #define INT_A_OUT      (1 << 0)
 
+/* SOFT_RST */
+#define PBSR           (1 << 12) /* Port B Software Reset */
+#define PASR           (1 <<  8) /* Port A Software Reset */
+#define IR             (1 <<  4) /* Interrupt Reset */
+#define FSISR          (1 <<  0) /* Software Reset */
+
 #define FSI_RATES SNDRV_PCM_RATE_8000_96000
 
 #define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
@@ -372,18 +378,13 @@ static void fsi_irq_init(struct fsi_priv *fsi, int is_play)
 
 static void fsi_soft_all_reset(struct fsi_master *master)
 {
-       u32 status = fsi_master_read(master, SOFT_RST);
-
        /* port AB reset */
-       status &= 0x000000ff;
-       fsi_master_write(master, SOFT_RST, status);
+       fsi_master_mask_set(master, SOFT_RST, PASR | PBSR, 0);
        mdelay(10);
 
        /* soft reset */
-       status &= 0x000000f0;
-       fsi_master_write(master, SOFT_RST, status);
-       status |= 0x00000001;
-       fsi_master_write(master, SOFT_RST, status);
+       fsi_master_mask_set(master, SOFT_RST, FSISR, 0);
+       fsi_master_mask_set(master, SOFT_RST, FSISR, FSISR);
        mdelay(10);
 }
 
@@ -558,12 +559,11 @@ static int fsi_data_pop(struct fsi_priv *fsi, int startup)
 static irqreturn_t fsi_interrupt(int irq, void *data)
 {
        struct fsi_master *master = data;
-       u32 status = fsi_master_read(master, SOFT_RST) & ~0x00000010;
        u32 int_st = fsi_master_read(master, INT_ST);
 
        /* clear irq status */
-       fsi_master_write(master, SOFT_RST, status);
-       fsi_master_write(master, SOFT_RST, status | 0x00000010);
+       fsi_master_mask_set(master, SOFT_RST, IR, 0);
+       fsi_master_mask_set(master, SOFT_RST, IR, IR);
 
        if (int_st & INT_A_OUT)
                fsi_data_push(&master->fsia, 0);