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Subject[PATCH 14/15] ARM: pxa: change SSP devices allocation
Date
In order to prepare for the dma_slave_map change for SSP DMA channels
allocation, the SSP platform devices will now include a platform data
structure which in turn selects which dma channel has to be used for
data transfers, especially the PCM ones.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
arch/arm/mach-pxa/devices.c | 78 +++++++++++++++++++++++++++++-----
arch/arm/mach-pxa/devices.h | 14 ++----
arch/arm/mach-pxa/include/mach/audio.h | 12 ++++++
arch/arm/mach-pxa/pxa25x.c | 4 +-
arch/arm/mach-pxa/pxa27x.c | 4 +-
arch/arm/mach-pxa/pxa3xx.c | 5 +--
6 files changed, 86 insertions(+), 31 deletions(-)

diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index c0b3c90fd67f..955d255dc4f4 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -481,6 +481,17 @@ void __init pxa_set_ac97_info(pxa2xx_audio_ops_t *ops)
pxa_register_device(&pxa_device_ac97, ops);
}

+static struct pxa_ssp_info pxa_ssp_infos[] = {
+ { .dma_chan_rx_name = "ssp1_rx", .dma_chan_tx_name = "ssp1_tx", },
+ { .dma_chan_rx_name = "ssp1_rx", .dma_chan_tx_name = "ssp1_tx", },
+ { .dma_chan_rx_name = "ssp2_rx", .dma_chan_tx_name = "ssp2_tx", },
+ { .dma_chan_rx_name = "ssp2_rx", .dma_chan_tx_name = "ssp2_tx", },
+ { .dma_chan_rx_name = "ssp3_rx", .dma_chan_tx_name = "ssp3_tx", },
+ { .dma_chan_rx_name = "ssp3_rx", .dma_chan_tx_name = "ssp3_tx", },
+ { .dma_chan_rx_name = "ssp4_rx", .dma_chan_tx_name = "ssp4_tx", },
+ { .dma_chan_rx_name = "ssp4_rx", .dma_chan_tx_name = "ssp4_tx", },
+};
+
#ifdef CONFIG_PXA25x

static struct resource pxa25x_resource_pwm0[] = {
@@ -528,7 +539,7 @@ static struct resource pxa25x_resource_ssp[] = {
},
};

-struct platform_device pxa25x_device_ssp = {
+static struct platform_device pxa25x_device_ssp = {
.name = "pxa25x-ssp",
.id = 0,
.dev = {
@@ -554,7 +565,7 @@ static struct resource pxa25x_resource_nssp[] = {
},
};

-struct platform_device pxa25x_device_nssp = {
+static struct platform_device pxa25x_device_nssp = {
.name = "pxa25x-nssp",
.id = 1,
.dev = {
@@ -580,7 +591,7 @@ static struct resource pxa25x_resource_assp[] = {
},
};

-struct platform_device pxa25x_device_assp = {
+static struct platform_device pxa25x_device_assp = {
/* ASSP is basically equivalent to NSSP */
.name = "pxa25x-nssp",
.id = 2,
@@ -591,6 +602,22 @@ struct platform_device pxa25x_device_assp = {
.resource = pxa25x_resource_assp,
.num_resources = ARRAY_SIZE(pxa25x_resource_assp),
};
+
+static struct platform_device *pxa25x_device_ssps[] = {
+ &pxa25x_device_ssp,
+ &pxa25x_device_nssp,
+ &pxa25x_device_assp,
+};
+
+void __init pxa25x_set_ssp_info(void)
+{
+ int ssp;
+
+ for (ssp = 0; ssp < ARRAY_SIZE(pxa25x_device_ssps); ssp++)
+ pxa_register_device(pxa25x_device_ssps[ssp],
+ &pxa_ssp_infos[ssp]);
+}
+
#endif /* CONFIG_PXA25x */

#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
@@ -698,7 +725,7 @@ static struct resource pxa27x_resource_ssp1[] = {
},
};

-struct platform_device pxa27x_device_ssp1 = {
+static struct platform_device pxa27x_device_ssp1 = {
.name = "pxa27x-ssp",
.id = 0,
.dev = {
@@ -724,7 +751,7 @@ static struct resource pxa27x_resource_ssp2[] = {
},
};

-struct platform_device pxa27x_device_ssp2 = {
+static struct platform_device pxa27x_device_ssp2 = {
.name = "pxa27x-ssp",
.id = 1,
.dev = {
@@ -750,7 +777,7 @@ static struct resource pxa27x_resource_ssp3[] = {
},
};

-struct platform_device pxa27x_device_ssp3 = {
+static struct platform_device pxa27x_device_ssp3 = {
.name = "pxa27x-ssp",
.id = 2,
.dev = {
@@ -761,6 +788,21 @@ struct platform_device pxa27x_device_ssp3 = {
.num_resources = ARRAY_SIZE(pxa27x_resource_ssp3),
};

+static struct platform_device *pxa27x_device_ssps[] = {
+ &pxa27x_device_ssp1,
+ &pxa27x_device_ssp2,
+ &pxa27x_device_ssp3,
+};
+
+void __init pxa27x_set_ssp_info(void)
+{
+ int ssp;
+
+ for (ssp = 0; ssp < ARRAY_SIZE(pxa27x_device_ssps); ssp++)
+ pxa_register_device(pxa27x_device_ssps[ssp],
+ &pxa_ssp_infos[ssp]);
+}
+
static struct resource pxa27x_resource_pwm0[] = {
[0] = {
.start = 0x40b00000,
@@ -951,7 +993,7 @@ static struct resource pxa3xx_resource_ssp4[] = {
* make the driver set the correct internal type, hence we provide specific
* platform_devices for each of them.
*/
-struct platform_device pxa3xx_device_ssp1 = {
+static struct platform_device pxa3xx_device_ssp1 = {
.name = "pxa3xx-ssp",
.id = 0,
.dev = {
@@ -962,7 +1004,7 @@ struct platform_device pxa3xx_device_ssp1 = {
.num_resources = ARRAY_SIZE(pxa27x_resource_ssp1),
};

-struct platform_device pxa3xx_device_ssp2 = {
+static struct platform_device pxa3xx_device_ssp2 = {
.name = "pxa3xx-ssp",
.id = 1,
.dev = {
@@ -973,7 +1015,7 @@ struct platform_device pxa3xx_device_ssp2 = {
.num_resources = ARRAY_SIZE(pxa27x_resource_ssp2),
};

-struct platform_device pxa3xx_device_ssp3 = {
+static struct platform_device pxa3xx_device_ssp3 = {
.name = "pxa3xx-ssp",
.id = 2,
.dev = {
@@ -984,7 +1026,7 @@ struct platform_device pxa3xx_device_ssp3 = {
.num_resources = ARRAY_SIZE(pxa27x_resource_ssp3),
};

-struct platform_device pxa3xx_device_ssp4 = {
+static struct platform_device pxa3xx_device_ssp4 = {
.name = "pxa3xx-ssp",
.id = 3,
.dev = {
@@ -994,6 +1036,22 @@ struct platform_device pxa3xx_device_ssp4 = {
.resource = pxa3xx_resource_ssp4,
.num_resources = ARRAY_SIZE(pxa3xx_resource_ssp4),
};
+
+static struct platform_device *pxa3xx_device_ssps[] = {
+ &pxa3xx_device_ssp1,
+ &pxa3xx_device_ssp2,
+ &pxa3xx_device_ssp3,
+ &pxa3xx_device_ssp4,
+};
+
+void __init pxa3xx_set_ssp_info(void)
+{
+ int ssp;
+
+ for (ssp = 0; ssp < ARRAY_SIZE(pxa3xx_device_ssps); ssp++)
+ pxa_register_device(pxa3xx_device_ssps[ssp],
+ &pxa_ssp_infos[ssp]);
+}
#endif /* CONFIG_PXA3xx */

struct resource pxa_resource_gpio[] = {
diff --git a/arch/arm/mach-pxa/devices.h b/arch/arm/mach-pxa/devices.h
index 11263f7c455b..5909805e7d84 100644
--- a/arch/arm/mach-pxa/devices.h
+++ b/arch/arm/mach-pxa/devices.h
@@ -22,17 +22,6 @@ extern struct platform_device pxa27x_device_i2c_power;
extern struct platform_device pxa27x_device_ohci;
extern struct platform_device pxa27x_device_keypad;

-extern struct platform_device pxa25x_device_ssp;
-extern struct platform_device pxa25x_device_nssp;
-extern struct platform_device pxa25x_device_assp;
-extern struct platform_device pxa27x_device_ssp1;
-extern struct platform_device pxa27x_device_ssp2;
-extern struct platform_device pxa27x_device_ssp3;
-extern struct platform_device pxa3xx_device_ssp1;
-extern struct platform_device pxa3xx_device_ssp2;
-extern struct platform_device pxa3xx_device_ssp3;
-extern struct platform_device pxa3xx_device_ssp4;
-
extern struct platform_device pxa25x_device_pwm0;
extern struct platform_device pxa25x_device_pwm1;
extern struct platform_device pxa27x_device_pwm0;
@@ -65,3 +54,6 @@ extern void pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info);
#ifdef CONFIG_PXA3xx
extern void pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info);
#endif
+void pxa25x_set_ssp_info(void);
+void pxa27x_set_ssp_info(void);
+void pxa3xx_set_ssp_info(void);
diff --git a/arch/arm/mach-pxa/include/mach/audio.h b/arch/arm/mach-pxa/include/mach/audio.h
index 7beebf7297b5..f1f6bc7673a1 100644
--- a/arch/arm/mach-pxa/include/mach/audio.h
+++ b/arch/arm/mach-pxa/include/mach/audio.h
@@ -28,4 +28,16 @@ typedef struct {

extern void pxa_set_ac97_info(pxa2xx_audio_ops_t *ops);

+/*
+ * struct pxa_ssp_info - platform data for SSP devices
+ * @dma_chan_rx_name: name of the receive dma channel to query, see
+ * pxa_slave_map
+ * @dma_chan_tx_name: name of the transmit dma channel to query, see
+ * pxa_slave_map
+ */
+struct pxa_ssp_info {
+ const char *dma_chan_rx_name;
+ const char *dma_chan_tx_name;
+};
+
#endif
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index ba431fad5c47..74779afbf200 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -193,9 +193,6 @@ static struct platform_device *pxa25x_devices[] __initdata = {
&pxa_device_pmu,
&pxa_device_i2s,
&sa1100_device_rtc,
- &pxa25x_device_ssp,
- &pxa25x_device_nssp,
- &pxa25x_device_assp,
&pxa25x_device_pwm0,
&pxa25x_device_pwm1,
&pxa_device_asoc_platform,
@@ -219,6 +216,7 @@ static int __init pxa25x_init(void)
pxa_register_device(&pxa25x_device_gpio, &pxa25x_gpio_info);
ret = platform_add_devices(pxa25x_devices,
ARRAY_SIZE(pxa25x_devices));
+ pxa25x_set_ssp_info();
}
}

diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 0c06f383ad52..f3896d164fd3 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -290,9 +290,6 @@ static struct platform_device *devices[] __initdata = {
&pxa_device_asoc_ssp3,
&pxa_device_asoc_platform,
&pxa_device_rtc,
- &pxa27x_device_ssp1,
- &pxa27x_device_ssp2,
- &pxa27x_device_ssp3,
&pxa27x_device_pwm0,
&pxa27x_device_pwm1,
};
@@ -313,6 +310,7 @@ static int __init pxa27x_init(void)
if (!of_have_populated_dt()) {
pxa_register_device(&pxa27x_device_gpio,
&pxa27x_gpio_info);
+ pxa27x_set_ssp_info();
pxa2xx_set_dmac_info(32, 75);
ret = platform_add_devices(devices,
ARRAY_SIZE(devices));
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 4b8a0df8ea57..2a5044dd463e 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -413,10 +413,6 @@ static struct platform_device *devices[] __initdata = {
&pxa_device_asoc_ssp4,
&pxa_device_asoc_platform,
&pxa_device_rtc,
- &pxa3xx_device_ssp1,
- &pxa3xx_device_ssp2,
- &pxa3xx_device_ssp3,
- &pxa3xx_device_ssp4,
&pxa27x_device_pwm0,
&pxa27x_device_pwm1,
};
@@ -456,6 +452,7 @@ static int __init pxa3xx_init(void)
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
if (ret)
return ret;
+ pxa3xx_set_ssp_info();
if (cpu_is_pxa300() || cpu_is_pxa310() || cpu_is_pxa320()) {
platform_device_add_data(&pxa3xx_device_gpio,
&pxa3xx_gpio_pdata,
--
2.11.0
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