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authorRobert Jarzmik <robert.jarzmik@free.fr>2017-09-02 21:54:06 +0200
committerMark Brown <broonie@kernel.org>2017-09-04 18:24:56 +0100
commit6f8acad646d29fbf5665a6e0c9adae71c3c2131e (patch)
tree872fbd3a3e4c81e523424eecb68ba94cc03285f2 /sound/arm
parent8d43344108c9945456128b75b69beee594b64ed6 (diff)
downloadlinux-6f8acad646d29fbf5665a6e0c9adae71c3c2131e.tar.bz2
ASoC: arm: make pxa2xx-ac97-lib ac97 codec agnostic
All pxa library functions don't use the input parameters for nothing but slot number. This simplifies their prototypes, and makes them usable by both the legacy ac97 bus and the new ac97 bus. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/arm')
-rw-r--r--sound/arm/pxa2xx-ac97-lib.c37
-rw-r--r--sound/arm/pxa2xx-ac97.c35
2 files changed, 48 insertions, 24 deletions
diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c
index 39c3969ac1c7..5950a9e218d9 100644
--- a/sound/arm/pxa2xx-ac97-lib.c
+++ b/sound/arm/pxa2xx-ac97-lib.c
@@ -20,7 +20,6 @@
#include <linux/io.h>
#include <linux/gpio.h>
-#include <sound/ac97_codec.h>
#include <sound/pxa2xx-lib.h>
#include <mach/irqs.h>
@@ -46,38 +45,41 @@ extern void pxa27x_configure_ac97reset(int reset_gpio, bool to_gpio);
* 1 jiffy timeout if interrupt never comes).
*/
-unsigned short pxa2xx_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
+int pxa2xx_ac97_read(int slot, unsigned short reg)
{
- unsigned short val = -1;
+ int val = -ENODEV;
volatile u32 *reg_addr;
+ if (slot > 0)
+ return -ENODEV;
+
mutex_lock(&car_mutex);
/* set up primary or secondary codec space */
if (cpu_is_pxa25x() && reg == AC97_GPIO_STATUS)
- reg_addr = ac97->num ? &SMC_REG_BASE : &PMC_REG_BASE;
+ reg_addr = slot ? &SMC_REG_BASE : &PMC_REG_BASE;
else
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
+ reg_addr = slot ? &SAC_REG_BASE : &PAC_REG_BASE;
reg_addr += (reg >> 1);
/* start read access across the ac97 link */
GSR = GSR_CDONE | GSR_SDONE;
gsr_bits = 0;
- val = *reg_addr;
+ val = (*reg_addr & 0xffff);
if (reg == AC97_GPIO_STATUS)
goto out;
if (wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_SDONE, 1) <= 0 &&
!((GSR | gsr_bits) & GSR_SDONE)) {
printk(KERN_ERR "%s: read error (ac97_reg=%d GSR=%#lx)\n",
__func__, reg, GSR | gsr_bits);
- val = -1;
+ val = -ETIMEDOUT;
goto out;
}
/* valid data now */
GSR = GSR_CDONE | GSR_SDONE;
gsr_bits = 0;
- val = *reg_addr;
+ val = (*reg_addr & 0xffff);
/* but we've just started another cycle... */
wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_SDONE, 1);
@@ -86,29 +88,32 @@ out: mutex_unlock(&car_mutex);
}
EXPORT_SYMBOL_GPL(pxa2xx_ac97_read);
-void pxa2xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
- unsigned short val)
+int pxa2xx_ac97_write(int slot, unsigned short reg, unsigned short val)
{
volatile u32 *reg_addr;
+ int ret = 0;
mutex_lock(&car_mutex);
/* set up primary or secondary codec space */
if (cpu_is_pxa25x() && reg == AC97_GPIO_STATUS)
- reg_addr = ac97->num ? &SMC_REG_BASE : &PMC_REG_BASE;
+ reg_addr = slot ? &SMC_REG_BASE : &PMC_REG_BASE;
else
- reg_addr = ac97->num ? &SAC_REG_BASE : &PAC_REG_BASE;
+ reg_addr = slot ? &SAC_REG_BASE : &PAC_REG_BASE;
reg_addr += (reg >> 1);
GSR = GSR_CDONE | GSR_SDONE;
gsr_bits = 0;
*reg_addr = val;
if (wait_event_timeout(gsr_wq, (GSR | gsr_bits) & GSR_CDONE, 1) <= 0 &&
- !((GSR | gsr_bits) & GSR_CDONE))
+ !((GSR | gsr_bits) & GSR_CDONE)) {
printk(KERN_ERR "%s: write error (ac97_reg=%d GSR=%#lx)\n",
__func__, reg, GSR | gsr_bits);
+ ret = -EIO;
+ }
mutex_unlock(&car_mutex);
+ return ret;
}
EXPORT_SYMBOL_GPL(pxa2xx_ac97_write);
@@ -188,7 +193,7 @@ static inline void pxa_ac97_cold_pxa3xx(void)
}
#endif
-bool pxa2xx_ac97_try_warm_reset(struct snd_ac97 *ac97)
+bool pxa2xx_ac97_try_warm_reset(void)
{
unsigned long gsr;
unsigned int timeout = 100;
@@ -225,7 +230,7 @@ bool pxa2xx_ac97_try_warm_reset(struct snd_ac97 *ac97)
}
EXPORT_SYMBOL_GPL(pxa2xx_ac97_try_warm_reset);
-bool pxa2xx_ac97_try_cold_reset(struct snd_ac97 *ac97)
+bool pxa2xx_ac97_try_cold_reset(void)
{
unsigned long gsr;
unsigned int timeout = 1000;
@@ -263,7 +268,7 @@ bool pxa2xx_ac97_try_cold_reset(struct snd_ac97 *ac97)
EXPORT_SYMBOL_GPL(pxa2xx_ac97_try_cold_reset);
-void pxa2xx_ac97_finish_reset(struct snd_ac97 *ac97)
+void pxa2xx_ac97_finish_reset(void)
{
GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN);
GCR |= GCR_SDONE_IE|GCR_CDONE_IE;
diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index fbd5dad0c484..4bc244c40f80 100644
--- a/sound/arm/pxa2xx-ac97.c
+++ b/sound/arm/pxa2xx-ac97.c
@@ -29,19 +29,38 @@
#include "pxa2xx-pcm.h"
-static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
+static void pxa2xx_ac97_legacy_reset(struct snd_ac97 *ac97)
{
- if (!pxa2xx_ac97_try_cold_reset(ac97)) {
- pxa2xx_ac97_try_warm_reset(ac97);
- }
+ if (!pxa2xx_ac97_try_cold_reset())
+ pxa2xx_ac97_try_warm_reset();
+
+ pxa2xx_ac97_finish_reset();
+}
+
+static unsigned short pxa2xx_ac97_legacy_read(struct snd_ac97 *ac97,
+ unsigned short reg)
+{
+ int ret;
+
+ ret = pxa2xx_ac97_read(ac97->num, reg);
+ if (ret < 0)
+ return 0;
+ else
+ return (unsigned short)(ret & 0xffff);
+}
+
+static void pxa2xx_ac97_legacy_write(struct snd_ac97 *ac97,
+ unsigned short reg, unsigned short val)
+{
+ int __always_unused ret;
- pxa2xx_ac97_finish_reset(ac97);
+ ret = pxa2xx_ac97_write(ac97->num, reg, val);
}
static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
- .read = pxa2xx_ac97_read,
- .write = pxa2xx_ac97_write,
- .reset = pxa2xx_ac97_reset,
+ .read = pxa2xx_ac97_legacy_read,
+ .write = pxa2xx_ac97_legacy_write,
+ .reset = pxa2xx_ac97_legacy_reset,
};
static struct pxad_param pxa2xx_ac97_pcm_out_req = {