[alsa-devel] [PATCH 06/11] arm: ux500: Add support for MSP I2S-devices
Ola Lilja
ola.o.lilja at stericsson.com
Tue May 8 15:57:00 CEST 2012
Create devices for the MSP-blocks (MSP0, MSP1, MSP2 and MSP3)
and associate it with the correct clocks in the clock-framework.
Signed-off-by: Ola Lilja <ola.o.lilja at stericsson.com>
---
arch/arm/mach-ux500/Makefile | 3 +-
arch/arm/mach-ux500/board-mop500-msp.c | 250 ++++++++++++++++++++++++++++++++
arch/arm/mach-ux500/board-mop500-msp.h | 14 ++
arch/arm/mach-ux500/board-mop500.c | 4 +
arch/arm/mach-ux500/clock.c | 8 +-
arch/arm/mach-ux500/devices-db8500.h | 10 --
arch/arm/mach-ux500/include/mach/msp.h | 29 ++++
7 files changed, 304 insertions(+), 14 deletions(-)
create mode 100644 arch/arm/mach-ux500/board-mop500-msp.c
create mode 100644 arch/arm/mach-ux500/board-mop500-msp.h
create mode 100644 arch/arm/mach-ux500/include/mach/msp.h
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index 465b9ec..11729bc 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -11,7 +11,8 @@ obj-$(CONFIG_MACH_MOP500) += board-mop500.o board-mop500-sdi.o \
board-mop500-regulators.o \
board-mop500-uib.o board-mop500-stuib.o \
board-mop500-u8500uib.o \
- board-mop500-pins.o
+ board-mop500-pins.o \
+ board-mop500-msp.o
obj-$(CONFIG_MACH_U5500) += board-u5500.o board-u5500-sdi.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
diff --git a/arch/arm/mach-ux500/board-mop500-msp.c b/arch/arm/mach-ux500/board-mop500-msp.c
new file mode 100644
index 0000000..c8f6300
--- /dev/null
+++ b/arch/arm/mach-ux500/board-mop500-msp.c
@@ -0,0 +1,250 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <plat/gpio-nomadik.h>
+
+#include <plat/pincfg.h>
+#include <plat/ste_dma40.h>
+
+#include <mach/devices.h>
+#include <ste-dma40-db8500.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/msp.h>
+
+#include "board-mop500.h"
+#include "devices-db8500.h"
+#include "pins-db8500.h"
+
+/* MSP1/3 Tx/Rx usage protection */
+static DEFINE_SPINLOCK(msp_rxtx_lock);
+
+/* Reference Count */
+static int msp_rxtx_ref;
+
+static pin_cfg_t mop500_msp1_pins_init[] = {
+ GPIO33_MSP1_TXD | PIN_OUTPUT_LOW | PIN_SLPM_WAKEUP_DISABLE,
+ GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+ GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+ GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+};
+
+static pin_cfg_t mop500_msp1_pins_exit[] = {
+ GPIO33_MSP1_TXD | PIN_OUTPUT_LOW | PIN_SLPM_WAKEUP_ENABLE,
+ GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+ GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+ GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+};
+
+int msp13_i2s_init(void)
+{
+ int retval = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&msp_rxtx_lock, flags);
+ if (msp_rxtx_ref == 0)
+ retval = nmk_config_pins(
+ ARRAY_AND_SIZE(mop500_msp1_pins_init));
+ if (!retval)
+ msp_rxtx_ref++;
+ spin_unlock_irqrestore(&msp_rxtx_lock, flags);
+
+ return retval;
+}
+
+int msp13_i2s_exit(void)
+{
+ int retval = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&msp_rxtx_lock, flags);
+ WARN_ON(!msp_rxtx_ref);
+ msp_rxtx_ref--;
+ if (msp_rxtx_ref == 0)
+ retval = nmk_config_pins_sleep(
+ ARRAY_AND_SIZE(mop500_msp1_pins_exit));
+ spin_unlock_irqrestore(&msp_rxtx_lock, flags);
+
+ return retval;
+}
+
+static struct stedma40_chan_cfg msp0_dma_rx = {
+ .high_priority = true,
+ .dir = STEDMA40_PERIPH_TO_MEM,
+
+ .src_dev_type = DB8500_DMA_DEV31_MSP0_RX_SLIM0_CH0_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+ .src_info.psize = STEDMA40_PSIZE_LOG_4,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+ /* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp0_dma_tx = {
+ .high_priority = true,
+ .dir = STEDMA40_MEM_TO_PERIPH,
+
+ .src_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .dst_dev_type = DB8500_DMA_DEV31_MSP0_TX_SLIM0_CH0_TX,
+
+ .src_info.psize = STEDMA40_PSIZE_LOG_4,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+ /* data_width is set during configuration */
+};
+
+static struct msp_i2s_platform_data msp0_platform_data = {
+ .id = MSP_I2S_0,
+ .msp_i2s_dma_rx = &msp0_dma_rx,
+ .msp_i2s_dma_tx = &msp0_dma_tx,
+};
+
+static struct stedma40_chan_cfg msp1_dma_rx = {
+ .high_priority = true,
+ .dir = STEDMA40_PERIPH_TO_MEM,
+
+ .src_dev_type = DB8500_DMA_DEV30_MSP3_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+ .src_info.psize = STEDMA40_PSIZE_LOG_4,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+ /* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp1_dma_tx = {
+ .high_priority = true,
+ .dir = STEDMA40_MEM_TO_PERIPH,
+
+ .src_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .dst_dev_type = DB8500_DMA_DEV30_MSP1_TX,
+
+ .src_info.psize = STEDMA40_PSIZE_LOG_4,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+ /* data_width is set during configuration */
+};
+
+static struct msp_i2s_platform_data msp1_platform_data = {
+ .id = MSP_I2S_1,
+ .msp_i2s_dma_rx = NULL,
+ .msp_i2s_dma_tx = &msp1_dma_tx,
+ .msp_i2s_init = msp13_i2s_init,
+ .msp_i2s_exit = msp13_i2s_exit,
+};
+
+static struct stedma40_chan_cfg msp2_dma_rx = {
+ .high_priority = true,
+ .dir = STEDMA40_PERIPH_TO_MEM,
+
+ .src_dev_type = DB8500_DMA_DEV14_MSP2_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+ /* MSP2 DMA doesn't work with PSIZE == 4 on DB8500v2 */
+ .src_info.psize = STEDMA40_PSIZE_LOG_1,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_1,
+
+ /* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp2_dma_tx = {
+ .high_priority = true,
+ .dir = STEDMA40_MEM_TO_PERIPH,
+
+ .src_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .dst_dev_type = DB8500_DMA_DEV14_MSP2_TX,
+
+ .src_info.psize = STEDMA40_PSIZE_LOG_4,
+ .dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+ .use_fixed_channel = true,
+ .phy_channel = 1,
+
+ /* data_width is set during configuration */
+};
+
+static int db8500_add_msp_i2s(struct device *parent, int id,
+ resource_size_t base, int irq,
+ struct msp_i2s_platform_data *pdata)
+{
+ struct platform_device *pdev;
+ struct resource res[] = {
+ DEFINE_RES_MEM(base, SZ_4K),
+ DEFINE_RES_IRQ(irq),
+ };
+
+ pr_info("Register platform-device 'ux500-msp-i2s', id %d, irq %d\n",
+ id, irq);
+ pdev = platform_device_register_resndata(parent, "ux500-msp-i2s", id,
+ res, ARRAY_SIZE(res),
+ pdata, sizeof(*pdata));
+ if (!pdev) {
+ pr_err("Failed to register platform-device 'ux500-msp-i2s.%d'!\n",
+ id);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/* Platform device for ASoC U8500 machine */
+static struct platform_device snd_soc_u8500 = {
+ .name = "snd-soc-u8500",
+ .id = 0,
+ .dev = {
+ .platform_data = NULL,
+ },
+};
+
+/* Platform device for Ux500-PCM */
+static struct platform_device ux500_pcm = {
+ .name = "ux500-pcm",
+ .id = 0,
+ .dev = {
+ .platform_data = NULL,
+ },
+};
+
+static struct msp_i2s_platform_data msp2_platform_data = {
+ .id = MSP_I2S_2,
+ .msp_i2s_dma_rx = &msp2_dma_rx,
+ .msp_i2s_dma_tx = &msp2_dma_tx,
+};
+
+static struct msp_i2s_platform_data msp3_platform_data = {
+ .id = MSP_I2S_3,
+ .msp_i2s_dma_rx = &msp1_dma_rx,
+ .msp_i2s_dma_tx = NULL,
+ .msp_i2s_init = msp13_i2s_init,
+ .msp_i2s_exit = msp13_i2s_exit,
+};
+
+int mop500_msp_init(struct device *parent)
+{
+ int ret;
+
+ pr_info("%s: Register platform-device 'snd-soc-u8500'.\n", __func__);
+ platform_device_register(&snd_soc_u8500);
+
+ pr_info("Initialize MSP I2S-devices.\n");
+ ret = db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0,
+ &msp0_platform_data);
+ ret |= db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1,
+ &msp1_platform_data);
+ ret |= db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2,
+ &msp2_platform_data);
+ ret |= db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1,
+ &msp3_platform_data);
+
+ pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__);
+ platform_device_register(&ux500_pcm);
+
+ return ret;
+}
diff --git a/arch/arm/mach-ux500/board-mop500-msp.h b/arch/arm/mach-ux500/board-mop500-msp.h
new file mode 100644
index 0000000..6fcfb5e
--- /dev/null
+++ b/arch/arm/mach-ux500/board-mop500-msp.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja at stericsson.com>,
+ * for ST-Ericsson.
+ *
+ * License terms:
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+void mop500_msp_init(struct device *parent);
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 9dfaab3..4cbed08 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -53,6 +53,7 @@
#include "devices-db8500.h"
#include "board-mop500.h"
#include "board-mop500-regulators.h"
+#include "board-mop500-msp.h"
static struct gpio_led snowball_led_array[] = {
{
@@ -631,6 +632,7 @@ static void __init mop500_init_machine(void)
mop500_i2c_init(parent);
mop500_sdi_init(parent);
mop500_spi_init(parent);
+ mop500_msp_init(parent);
mop500_uart_init(parent);
i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
@@ -662,6 +664,7 @@ static void __init snowball_init_machine(void)
mop500_i2c_init(parent);
snowball_sdi_init(parent);
mop500_spi_init(parent);
+ mop500_msp_init(parent);
mop500_uart_init(parent);
i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
@@ -699,6 +702,7 @@ static void __init hrefv60_init_machine(void)
mop500_i2c_init(parent);
hrefv60_sdi_init(parent);
mop500_spi_init(parent);
+ mop500_msp_init(parent);
mop500_uart_init(parent);
i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c
index cc87f77..9c2ffcdf 100644
--- a/arch/arm/mach-ux500/clock.c
+++ b/arch/arm/mach-ux500/clock.c
@@ -336,6 +336,7 @@ static DEFINE_PRCMU_CLK(uiccclk, 0x4, 1, UICCCLK); /* v1 */
*/
/* Peripheral Cluster #1 */
+static DEFINE_PRCC_CLK(1, msp3, 11, 10, &clk_msp1clk);
static DEFINE_PRCC_CLK(1, i2c4, 10, 9, &clk_i2cclk);
static DEFINE_PRCC_CLK(1, gpio0, 9, -1, NULL);
static DEFINE_PRCC_CLK(1, slimbus0, 8, 8, &clk_slimclk);
@@ -405,7 +406,7 @@ static struct clk_lookup u8500_clks[] = {
CLK(slimbus0, "slimbus0", NULL),
CLK(i2c2, "nmk-i2c.2", NULL),
CLK(sdi0, "sdi0", NULL),
- CLK(msp0, "msp0", NULL),
+ CLK(msp0, "ux500-msp-i2s.0", NULL),
CLK(i2c1, "nmk-i2c.1", NULL),
CLK(uart1, "uart1", NULL),
CLK(uart0, "uart0", NULL),
@@ -455,7 +456,8 @@ static struct clk_lookup u8500_clks[] = {
/* Peripheral Cluster #1 */
CLK(i2c4, "nmk-i2c.4", NULL),
CLK(spi3, "spi3", NULL),
- CLK(msp1, "msp1", NULL),
+ CLK(msp1, "ux500-msp-i2s.1", NULL),
+ CLK(msp3, "ux500-msp-i2s.3", NULL),
/* Peripheral Cluster #2 */
CLK(gpio1, "gpio.6", NULL),
@@ -465,7 +467,7 @@ static struct clk_lookup u8500_clks[] = {
CLK(spi0, "spi0", NULL),
CLK(sdi3, "sdi3", NULL),
CLK(sdi1, "sdi1", NULL),
- CLK(msp2, "msp2", NULL),
+ CLK(msp2, "ux500-msp-i2s.2", NULL),
CLK(sdi4, "sdi4", NULL),
CLK(pwl, "pwl", NULL),
CLK(spi1, "spi1", NULL),
diff --git a/arch/arm/mach-ux500/devices-db8500.h b/arch/arm/mach-ux500/devices-db8500.h
index 9fd93e9..e22b786 100644
--- a/arch/arm/mach-ux500/devices-db8500.h
+++ b/arch/arm/mach-ux500/devices-db8500.h
@@ -34,7 +34,6 @@ db8500_add_ssp(struct device *parent, const char *name, resource_size_t base,
return dbx500_add_amba_device(parent, name, base, irq, pdata, 0);
}
-
#define db8500_add_i2c0(parent, pdata) \
dbx500_add_i2c(parent, 0, U8500_I2C0_BASE, IRQ_DB8500_I2C0, pdata)
#define db8500_add_i2c1(parent, pdata) \
@@ -46,15 +45,6 @@ db8500_add_ssp(struct device *parent, const char *name, resource_size_t base,
#define db8500_add_i2c4(parent, pdata) \
dbx500_add_i2c(parent, 4, U8500_I2C4_BASE, IRQ_DB8500_I2C4, pdata)
-#define db8500_add_msp0_i2s(parent, pdata) \
- dbx500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata)
-#define db8500_add_msp1_i2s(parent, pdata) \
- dbx500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata)
-#define db8500_add_msp2_i2s(parent, pdata) \
- dbx500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata)
-#define db8500_add_msp3_i2s(parent, pdata) \
- dbx500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata)
-
#define db8500_add_msp0_spi(parent, pdata) \
dbx500_add_msp_spi(parent, "msp0", U8500_MSP0_BASE, \
IRQ_DB8500_MSP0, pdata)
diff --git a/arch/arm/mach-ux500/include/mach/msp.h b/arch/arm/mach-ux500/include/mach/msp.h
new file mode 100644
index 0000000..798be19
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/msp.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Rabin Vincent <rabin.vincent at stericsson.com> for ST-Ericsson
+ * License terms: GNU General Public License (GPL), version 2.
+ */
+
+#ifndef __MSP_H
+#define __MSP_H
+
+#include <plat/ste_dma40.h>
+
+enum msp_i2s_id {
+ MSP_I2S_0 = 0,
+ MSP_I2S_1,
+ MSP_I2S_2,
+ MSP_I2S_3,
+};
+
+/* Platform data structure for a MSP I2S-device */
+struct msp_i2s_platform_data {
+ enum msp_i2s_id id;
+ struct stedma40_chan_cfg *msp_i2s_dma_rx;
+ struct stedma40_chan_cfg *msp_i2s_dma_tx;
+ int (*msp_i2s_init) (void);
+ int (*msp_i2s_exit) (void);
+};
+
+#endif
--
1.7.8.3
More information about the Alsa-devel
mailing list