[alsa-devel] [PATCH 10/16] arm: ux500: Add support for MSP I2S-devices
Ola Lilja
ola.o.lilja at stericsson.com
Tue Mar 13 16:11:37 CET 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 | 194 ++++++++++++++++++++++++++++++++
arch/arm/mach-ux500/board-mop500.c | 7 +-
arch/arm/mach-ux500/board-mop500.h | 1 +
arch/arm/mach-ux500/clock.c | 8 +-
arch/arm/mach-ux500/devices-common.h | 4 +-
arch/arm/mach-ux500/include/mach/msp.h | 29 +++++
7 files changed, 237 insertions(+), 9 deletions(-)
create mode 100644 arch/arm/mach-ux500/board-mop500-msp.c
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 6bd2f45..6ee4e84 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -11,7 +11,8 @@ obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \
board-mop500-regulators.o \
board-mop500-uib.o board-mop500-stuib.o \
board-mop500-u8500uib.o \
- board-mop500-pins.o
+ board-mop500-pins.o \
+ board-mop500-msp.o
obj-$(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..4223b14
--- /dev/null
+++ b/arch/arm/mach-ux500/board-mop500-msp.c
@@ -0,0 +1,194 @@
+/*
+ * 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 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,
+};
+
+void __init mop500_msp_init(void)
+{
+ pr_info("Initialize MSP I2S-devices.\n");
+ db8500_add_msp0_i2s(&msp0_platform_data);
+ db8500_add_msp1_i2s(&msp1_platform_data);
+ db8500_add_msp2_i2s(&msp2_platform_data);
+ db8500_add_msp3_i2s(&msp3_platform_data);
+}
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 2df23ed..4b017a1 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -604,7 +604,6 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
static void __init mop500_init_machine(void)
{
int i2c0_devs;
-
mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
u8500_init_devices();
@@ -613,12 +612,11 @@ static void __init mop500_init_machine(void)
platform_add_devices(mop500_platform_devs,
ARRAY_SIZE(mop500_platform_devs));
-
mop500_i2c_init();
mop500_sdi_init();
+ mop500_msp_init();
mop500_spi_init();
mop500_uart_init();
-
i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs);
@@ -642,6 +640,7 @@ static void __init snowball_init_machine(void)
mop500_i2c_init();
snowball_sdi_init();
+ mop500_msp_init();
mop500_spi_init();
mop500_uart_init();
@@ -657,7 +656,6 @@ static void __init snowball_init_machine(void)
static void __init hrefv60_init_machine(void)
{
int i2c0_devs;
-
/*
* The HREFv60 board removed a GPIO expander and routed
* all these GPIO pins to the internal GPIO controller
@@ -674,6 +672,7 @@ static void __init hrefv60_init_machine(void)
mop500_i2c_init();
hrefv60_sdi_init();
+ mop500_msp_init();
mop500_spi_init();
mop500_uart_init();
diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h
index f926d3d..b377bbe 100644
--- a/arch/arm/mach-ux500/board-mop500.h
+++ b/arch/arm/mach-ux500/board-mop500.h
@@ -81,6 +81,7 @@ extern void hrefv60_sdi_init(void);
extern void mop500_sdi_tc35892_init(void);
void __init mop500_u8500uib_init(void);
void __init mop500_stuib_init(void);
+void __init mop500_msp_init(void);
void __init mop500_pins_init(void);
void __init hrefv60_pins_init(void);
void __init snowball_pins_init(void);
diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c
index 7379075..8e93f1a 100644
--- a/arch/arm/mach-ux500/clock.c
+++ b/arch/arm/mach-ux500/clock.c
@@ -329,6 +329,7 @@ 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);
@@ -398,7 +399,7 @@ 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),
@@ -448,7 +449,8 @@ 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),
@@ -458,7 +460,7 @@ 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-common.h b/arch/arm/mach-ux500/devices-common.h
index 7825705..024d51b 100644
--- a/arch/arm/mach-ux500/devices-common.h
+++ b/arch/arm/mach-ux500/devices-common.h
@@ -69,7 +69,9 @@ static inline struct platform_device *
dbx500_add_msp_i2s(int id, resource_size_t base, int irq,
struct msp_i2s_platform_data *pdata)
{
- return dbx500_add_platform_device_4k1irq("MSP_I2S", id, base, irq,
+ pr_info("Add platform-device 'ux500-msp-i2s', id %d, irq %d\n",
+ id, irq);
+ return dbx500_add_platform_device_4k1irq("ux500-msp-i2s", id, base, irq,
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
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