From: Ajay Singh <ajay.kat...@microchip.com>
Make use of FIELD_PREP/FIELD_GET macro to refactor the interrupt
handling for SDIO.
Signed-off-by: Ajay Singh <ajay.kat...@microchip.com>
---
drivers/staging/wilc1000/sdio.c | 98 ++++++++++++---------------------
drivers/staging/wilc1000/spi.c | 4 --
drivers/staging/wilc1000/wlan.h | 3 +
3 files changed, 39 insertions(+), 66 deletions(-)
diff --git a/drivers/staging/wilc1000/sdio.c b/drivers/staging/wilc1000/sdio.c
index 77ef84f9cc37..66706efc5711 100644
--- a/drivers/staging/wilc1000/sdio.c
+++ b/drivers/staging/wilc1000/sdio.c
@@ -26,7 +26,6 @@ static const struct sdio_device_id wilc_sdio_ids[] = {
struct wilc_sdio {
bool irq_gpio;
u32 block_size;
- int nint;
int has_thrpt_enh3;
};
@@ -790,6 +789,7 @@ static int wilc_sdio_read_int(struct wilc *wilc, u32
*int_status)
struct sdio_func *func = dev_to_sdio_func(wilc->dev);
struct wilc_sdio *sdio_priv = wilc->bus_data;
u32 tmp;
+ u8 irq_flags;
struct sdio_cmd52 cmd;
wilc_sdio_read_size(wilc, &tmp);
@@ -798,44 +798,22 @@ static int wilc_sdio_read_int(struct wilc *wilc, u32
*int_status)
* Read IRQ flags
**/
if (!sdio_priv->irq_gpio) {
- int i;
-
- cmd.read_write = 0;
cmd.function = 1;
cmd.address = 0x04;
- cmd.data = 0;
- wilc_sdio_cmd52(wilc, &cmd);
-
- if (cmd.data & BIT(0))
- tmp |= INT_0;
- if (cmd.data & BIT(2))
- tmp |= INT_1;
- if (cmd.data & BIT(3))
- tmp |= INT_2;
- if (cmd.data & BIT(4))
- tmp |= INT_3;
- if (cmd.data & BIT(5))
- tmp |= INT_4;
- for (i = sdio_priv->nint; i < MAX_NUM_INT; i++) {
- if ((tmp >> (IRG_FLAGS_OFFSET + i)) & 0x1) {
- dev_err(&func->dev,
- "Unexpected interrupt (1) : tmp=%x,
data=%x\n",
- tmp, cmd.data);
- break;
- }
- }
} else {
- u32 irq_flags;
-
- cmd.read_write = 0;
cmd.function = 0;
- cmd.raw = 0;
cmd.address = 0xf7;
- cmd.data = 0;
- wilc_sdio_cmd52(wilc, &cmd);
- irq_flags = cmd.data & 0x1f;
- tmp |= ((irq_flags >> 0) << IRG_FLAGS_OFFSET);
}
+ cmd.raw = 0;
+ cmd.read_write = 0;
+ cmd.data = 0;
+ wilc_sdio_cmd52(wilc, &cmd);
+ irq_flags = cmd.data;
+ tmp |= FIELD_PREP(IRG_FLAGS_MASK, cmd.data);
+
+ if (FIELD_GET(UNHANDLED_IRQ_MASK, irq_flags))
+ dev_err(&func->dev, "Unexpected interrupt (1) int=%lx\n",
+ FIELD_GET(UNHANDLED_IRQ_MASK, irq_flags));
*int_status = tmp;
@@ -890,38 +868,36 @@ static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32
val)
* Must clear each interrupt individually.
*/
u32 flags;
+ int i;
flags = val & (BIT(MAX_NUM_INT) - 1);
- if (flags) {
- int i;
-
- for (i = 0; i < sdio_priv->nint; i++) {
- if (flags & 1) {
- struct sdio_cmd52 cmd;
-
- cmd.read_write = 1;
- cmd.function = 0;
- cmd.raw = 0;
- cmd.address = 0xf8;
- cmd.data = BIT(i);
-
- ret = wilc_sdio_cmd52(wilc, &cmd);
- if (ret) {
- dev_err(&func->dev,
- "Failed cmd52, set 0xf8
data (%d) ...\n",
- __LINE__);
- return ret;
- }
+ for (i = 0; i < NUM_INT_EXT && flags; i++) {
+ if (flags & BIT(i)) {
+ struct sdio_cmd52 cmd;
+
+ cmd.read_write = 1;
+ cmd.function = 0;
+ cmd.raw = 0;
+ cmd.address = 0xf8;
+ cmd.data = BIT(i);
+
+ ret = wilc_sdio_cmd52(wilc, &cmd);
+ if (ret) {
+ dev_err(&func->dev,
+ "Failed cmd52, set 0xf8 data
(%d) ...\n",
+ __LINE__);
+ return ret;
}
- flags >>= 1;
+ flags &= ~BIT(i);
}
+ }
- for (i = sdio_priv->nint; i < MAX_NUM_INT; i++) {
- if (flags & 1)
- dev_err(&func->dev,
- "Unexpected interrupt cleared
%d...\n",
- i);
- flags >>= 1;
+ for (i = NUM_INT_EXT; i < MAX_NUM_INT && flags; i++) {
+ if (flags & BIT(i)) {
+ dev_err(&func->dev,
+ "Unexpected interrupt cleared %d...\n",
+ i);
+ flags &= ~BIT(i);
}
}
}
@@ -967,8 +943,6 @@ static int wilc_sdio_sync_ext(struct wilc *wilc, int nint)
return -EINVAL;
}
- sdio_priv->nint = nint;
-
/**
* Disable power sequencer
**/
diff --git a/drivers/staging/wilc1000/spi.c b/drivers/staging/wilc1000/spi.c
index 300c5c832572..37be627e72ce 100644
--- a/drivers/staging/wilc1000/spi.c
+++ b/drivers/staging/wilc1000/spi.c
@@ -12,7 +12,6 @@
struct wilc_spi {
int crc_off;
- int nint;
};
static const struct wilc_hif_func wilc_hif_spi;
@@ -916,7 +915,6 @@ static int wilc_spi_clear_int_ext(struct wilc *wilc, u32
val)
static int wilc_spi_sync_ext(struct wilc *wilc, int nint)
{
struct spi_device *spi = to_spi_device(wilc->dev);
- struct wilc_spi *spi_priv = wilc->bus_data;
u32 reg;
int ret, i;
@@ -925,8 +923,6 @@ static int wilc_spi_sync_ext(struct wilc *wilc, int nint)
return -EINVAL;
}
- spi_priv->nint = nint;
-
/*
* interrupt pin mux select
*/
diff --git a/drivers/staging/wilc1000/wlan.h b/drivers/staging/wilc1000/wlan.h
index 876b02e93a81..27f08b375345 100644
--- a/drivers/staging/wilc1000/wlan.h
+++ b/drivers/staging/wilc1000/wlan.h
@@ -176,6 +176,8 @@
#define INT_4 BIT(IRG_FLAGS_OFFSET + 4)
#define INT_5 BIT(IRG_FLAGS_OFFSET + 5)
#define MAX_NUM_INT 5
+#define IRG_FLAGS_MASK GENMASK(IRG_FLAGS_OFFSET + MAX_NUM_INT, \
+ IRG_FLAGS_OFFSET)
/*******************************************/
/* E0 and later Interrupt flags. */
@@ -203,6 +205,7 @@
#define DATA_INT_EXT INT_0
#define ALL_INT_EXT DATA_INT_EXT
#define NUM_INT_EXT 1
+#define UNHANDLED_IRQ_MASK GENMASK(MAX_NUM_INT - 1, NUM_INT_EXT)
#define DATA_INT_CLR CLR_INT0
--
2.24.0
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