[PATCH v2] spi_topcliff_pch: support new device ML7213 IOH

[Tomoya MORINAGA]

Support ML7213 device of OKI SEMICONDUCTOR.
ML7213 is companion chip of Intel Atom E6xx series for IVI(In-Vehicle Infotainment).
ML7213 is completely compatible for Intel EG20T PCH.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@xxxxxxxxxxxxxxx>
---
 drivers/spi/Kconfig            |    7 +-
 drivers/spi/spi_topcliff_pch.c |  450 ++++++++++++++++++++++------------------
 2 files changed, 250 insertions(+), 207 deletions(-)

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index bb233a9..f36631c 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -351,12 +351,17 @@ config SPI_TEGRA
 	  SPI driver for NVidia Tegra SoCs
 
 config SPI_TOPCLIFF_PCH
-	tristate "Topcliff PCH SPI Controller"
+	tristate "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH SPI controller"
 	depends on PCI
 	help
 	  SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
 	  used in some x86 embedded processors.
 
+	  This driver also can be used for OKI SEMICONDUCTOR's ML7213 IOH which
+	  is for IVI(In-Vehicle Infotainment) use.
+	  ML7213 IOH is companion chip for Intel Atom E6xx series.
+	  ML7213 IOH is completely compatible for Intel EG20T PCH.
+
 config SPI_TXX9
 	tristate "Toshiba TXx9 SPI controller"
 	depends on GENERIC_GPIO && CPU_TX49XX
diff --git a/drivers/spi/spi_topcliff_pch.c b/drivers/spi/spi_topcliff_pch.c
index 79e48d4..81feb11 100644
--- a/drivers/spi/spi_topcliff_pch.c
+++ b/drivers/spi/spi_topcliff_pch.c
@@ -26,6 +26,7 @@
 #include <linux/spi/spidev.h>
 #include <linux/module.h>
 #include <linux/device.h>
+#include <linux/platform_device.h>
 
 /* Register offsets */
 #define PCH_SPCR		0x00	/* SPI control register */
@@ -35,6 +36,7 @@
 #define PCH_SPDRR		0x10	/* SPI read data register */
 #define PCH_SSNXCR		0x18	/* SSN Expand Control Register */
 #define PCH_SRST		0x1C	/* SPI reset register */
+#define PCH_SPI_ADDRESS_SIZE	0x20
 
 #define PCH_SPSR_TFD		0x000007C0
 #define PCH_SPSR_RFD		0x0000F800
@@ -88,6 +90,16 @@
 #define PCH_CLOCK_HZ		50000000
 #define PCH_MAX_SPBR		1023
 
+/* Definition for ML7213 by OKI SEMICONDUCTOR */
+#define PCI_VENDOR_ID_ROHM		0x10DB
+#define PCI_DEVICE_ID_ML7213_SPI	0x802c
+
+/*
+Set the number of SPI instance max
+Intel EG20T PCH :		1ch
+OKI SEMICONDUCTOR ML7213 IOH :	2ch
+*/
+#define PCH_SPI_MAX_DEV			2
 
 /**
  * struct pch_spi_data - Holds the SPI channel specific details
@@ -121,6 +133,8 @@
  * @cur_trans:			The current transfer that this SPI driver is
  *				handling
  * @board_dat:			Reference to the SPI device data structure
+ * @plat_dev:			platform_device structure
+ * @ch:				SPI channel number
  */
 struct pch_spi_data {
 	void __iomem *io_remap_addr;
@@ -144,6 +158,8 @@ struct pch_spi_data {
 	struct spi_message *current_msg;
 	struct spi_transfer *cur_trans;
 	struct pch_spi_board_data *board_dat;
+	struct platform_device	plat_dev;
+	int ch;
 };
 
 /**
@@ -153,18 +169,21 @@ struct pch_spi_data {
  * @pci_req_sts:	Status of pci_request_regions
  * @suspend_sts:	Status of suspend
  * @data:		Pointer to SPI channel data structure
+ * @num:		The number of SPI device instance
  */
 struct pch_spi_board_data {
 	struct pci_dev *pdev;
 	u8 irq_reg_sts;
 	u8 pci_req_sts;
 	u8 suspend_sts;
-	struct pch_spi_data *data;
+	struct pch_spi_data *data[PCH_SPI_MAX_DEV];
+	int num;
 };
 
 static struct pci_device_id pch_spi_pcidev_id[] = {
-	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_GE_SPI)},
-	{0,}
+	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_GE_SPI),    1, },
+	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_SPI), 2, },
+	{ }
 };
 
 /**
@@ -288,6 +307,7 @@ static irqreturn_t pch_spi_handler(int irq, void *dev_id)
 	void __iomem *io_remap_addr;
 	irqreturn_t ret = IRQ_NONE;
 	struct pch_spi_board_data *board_dat = dev_id;
+	int i;
 
 	if (board_dat->suspend_sts) {
 		dev_dbg(&board_dat->pdev->dev,
@@ -295,21 +315,21 @@ static irqreturn_t pch_spi_handler(int irq, void *dev_id)
 		return IRQ_NONE;
 	}
 
-	data = board_dat->data;
-	io_remap_addr = data->io_remap_addr;
-	spsr = io_remap_addr + PCH_SPSR;
+	for (i = 0; i < board_dat->num; i++) {
+		data = board_dat->data[i];
+		io_remap_addr = data->io_remap_addr;
+		spsr = io_remap_addr + PCH_SPSR;
+		reg_spsr_val = ioread32(spsr);
 
-	reg_spsr_val = ioread32(spsr);
+		/* Check if the interrupt is for SPI device */
+		if (reg_spsr_val & (SPSR_FI_BIT | SPSR_RFI_BIT)) {
+			pch_spi_handler_sub(data, reg_spsr_val, io_remap_addr);
+			ret = IRQ_HANDLED;
+		}
 
-	/* Check if the interrupt is for SPI device */
-	if (reg_spsr_val & (SPSR_FI_BIT | SPSR_RFI_BIT)) {
-		pch_spi_handler_sub(data, reg_spsr_val, io_remap_addr);
-		ret = IRQ_HANDLED;
+		dev_dbg(&board_dat->pdev->dev, "%s EXIT return value=%d\n",
+			__func__, ret);
 	}
-
-	dev_dbg(&board_dat->pdev->dev, "%s EXIT return value=%d\n",
-		__func__, ret);
-
 	return ret;
 }
 
@@ -870,107 +890,63 @@ static void pch_spi_process_messages(struct work_struct *pwork)
 
 static void pch_spi_free_resources(struct pch_spi_board_data *board_dat)
 {
+	int i;
+
 	dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__);
 
 	/* free workqueue */
-	if (board_dat->data->wk != NULL) {
-		destroy_workqueue(board_dat->data->wk);
-		board_dat->data->wk = NULL;
-		dev_dbg(&board_dat->pdev->dev,
-			"%s destroy_workqueue invoked successfully\n",
-			__func__);
+	for (i = 0; i < board_dat->num; i++) {
+		if (board_dat->data[i]->wk != NULL) {
+			destroy_workqueue(board_dat->data[i]->wk);
+			board_dat->data[i]->wk = NULL;
+			dev_dbg(&board_dat->pdev->dev,
+				"%s destroy_workqueue invoked successfully\n",
+				__func__);
+		}
 	}
 
 	/* disable interrupts & free IRQ */
 	if (board_dat->irq_reg_sts) {
-		/* disable interrupts */
-		pch_spi_setclr_reg(board_dat->data->master, PCH_SPCR, 0,
-				   PCH_ALL);
-
-		/* free IRQ */
-		free_irq(board_dat->pdev->irq, board_dat);
-
-		dev_dbg(&board_dat->pdev->dev,
-			"%s free_irq invoked successfully\n", __func__);
-
-		board_dat->irq_reg_sts = false;
-	}
-
-	/* unmap PCI base address */
-	if (board_dat->data->io_remap_addr != 0) {
-		pci_iounmap(board_dat->pdev, board_dat->data->io_remap_addr);
+		for (i = 0; i < board_dat->num; i++) {
+			/* disable interrupts */
+			pch_spi_setclr_reg(board_dat->data[i]->master, PCH_SPCR,
+					   0, PCH_ALL);
 
-		board_dat->data->io_remap_addr = 0;
+			if (i == (board_dat->num - 1)) {
+				dev_dbg(&board_dat->pdev->dev,
+					"%s free_irq invoked successfully\n",
+					__func__);
 
-		dev_dbg(&board_dat->pdev->dev,
-			"%s pci_iounmap invoked successfully\n", __func__);
-	}
-
-	/* release PCI region */
-	if (board_dat->pci_req_sts) {
-		pci_release_regions(board_dat->pdev);
-		dev_dbg(&board_dat->pdev->dev,
-			"%s pci_release_regions invoked successfully\n",
-			__func__);
-		board_dat->pci_req_sts = false;
+				board_dat->irq_reg_sts = false;
+			}
+		}
 	}
 }
 
-static int pch_spi_get_resources(struct pch_spi_board_data *board_dat)
+static int pch_spi_get_resources(struct pch_spi_board_data *board_dat, int num)
 {
-	void __iomem *io_remap_addr;
-	int retval;
+	int retval = 0;
+
 	dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__);
 
 	/* create workqueue */
-	board_dat->data->wk = create_singlethread_workqueue(KBUILD_MODNAME);
-	if (!board_dat->data->wk) {
+	board_dat->data[num]->wk =
+				  create_singlethread_workqueue(KBUILD_MODNAME);
+
+	if (!board_dat->data[num]->wk) {
 		dev_err(&board_dat->pdev->dev,
 			"%s create_singlet hread_workqueue failed\n", __func__);
 		retval = -EBUSY;
 		goto err_return;
 	}
 
-	dev_dbg(&board_dat->pdev->dev,
-		"%s create_singlethread_workqueue success\n", __func__);
-
-	retval = pci_request_regions(board_dat->pdev, KBUILD_MODNAME);
-	if (retval != 0) {
-		dev_err(&board_dat->pdev->dev,
-			"%s request_region failed\n", __func__);
-		goto err_return;
-	}
-
 	board_dat->pci_req_sts = true;
 
-	io_remap_addr = pci_iomap(board_dat->pdev, 1, 0);
-	if (io_remap_addr == 0) {
-		dev_err(&board_dat->pdev->dev,
-			"%s pci_iomap failed\n", __func__);
-		retval = -ENOMEM;
-		goto err_return;
-	}
-
-	/* calculate base address for all channels */
-	board_dat->data->io_remap_addr = io_remap_addr;
-
 	/* reset PCH SPI h/w */
-	pch_spi_reset(board_dat->data->master);
+	pch_spi_reset(board_dat->data[num]->master);
 	dev_dbg(&board_dat->pdev->dev,
 		"%s pch_spi_reset invoked successfully\n", __func__);
 
-	/* register IRQ */
-	retval = request_irq(board_dat->pdev->irq, pch_spi_handler,
-			     IRQF_SHARED, KBUILD_MODNAME, board_dat);
-	if (retval != 0) {
-		dev_err(&board_dat->pdev->dev,
-			"%s request_irq failed\n", __func__);
-		goto err_return;
-	}
-
-	dev_dbg(&board_dat->pdev->dev, "%s request_irq returned=%d\n",
-		__func__, retval);
-
 	board_dat->irq_reg_sts = true;
 	dev_dbg(&board_dat->pdev->dev, "%s data->irq_reg_sts=true\n", __func__);
 
@@ -986,15 +962,105 @@ err_return:
 	return retval;
 }
 
-static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static int __devinit pch_spi_pd_probe(struct platform_device *plat_dev)
 {
-
+	int ret;
 	struct spi_master *master;
+	struct pch_spi_data *data = platform_get_drvdata(plat_dev);
+
+	master = data->master;
+
+	/* initialize members of SPI master */
+	master->bus_num = data->ch;
+	master->num_chipselect = PCH_MAX_CS;
+	master->setup = pch_spi_setup;
+	master->transfer = pch_spi_transfer;
+	data->master = master;
+	data->n_curnt_chip = 255;
+	data->status = STATUS_RUNNING;
+	INIT_LIST_HEAD(&data->queue);
+	spin_lock_init(&data->lock);
+	INIT_WORK(&data->work, pch_spi_process_messages);
+	init_waitqueue_head(&data->wait);
+
+	ret = pch_spi_get_resources(data->board_dat, data->ch);
+	if (ret) {
+		dev_err(&plat_dev->dev, "%s fail(retval=%d)\n", __func__, ret);
+		goto err_spi_get_resources;
+	}
+
+	pch_spi_set_master_mode(master);
+
+	ret = spi_register_master(master);
+	if (ret != 0) {
+		dev_err(&plat_dev->dev,
+			"%s spi_register_master FAILED\n", __func__);
+		goto err_spi_reg_master;
+	}
+
+	return 0;
+
+err_spi_reg_master:
+	pch_spi_free_resources(data->board_dat);
+err_spi_get_resources:
+
+	return ret;
+}
+
+static int pch_spi_pd_remove(struct platform_device *plat_dev)
+{
+	struct pch_spi_data *data = platform_get_drvdata(plat_dev);
+
+	spi_unregister_master(data->master);
+	pch_spi_free_resources(data->board_dat);
+	platform_set_drvdata(plat_dev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver pch_spi_pd_driver = {
+	.driver = {
+		.name = "pch-spi",
+		.owner = THIS_MODULE,
+	},
+	.probe = pch_spi_pd_probe,
+	.remove = __devexit_p(pch_spi_pd_remove),
+};
+
+static void pch_spi_release_slot(struct device *dev)
+{
+}
+static int pch_spi_register_slot(struct pch_spi_board_data *board_dat,
+				 unsigned io_offset, const char *name, int ch)
+{
+	int err;
+
+	board_dat->data[ch]->ch = ch;
+	board_dat->data[ch]->plat_dev.name = name;
+	board_dat->data[ch]->plat_dev.id = ch;
+	board_dat->data[ch]->board_dat = board_dat;
+	board_dat->data[ch]->plat_dev.dev.parent = &board_dat->pdev->dev;
+	board_dat->data[ch]->plat_dev.dev.release = pch_spi_release_slot;
+
+	platform_set_drvdata(&board_dat->data[ch]->plat_dev,
+			     board_dat->data[ch]);
+
+	err = platform_device_register(&board_dat->data[ch]->plat_dev);
+	if (err) {
+		platform_device_put(&board_dat->data[ch]->plat_dev);
+		return err;
+	}
+
+	return 0;
+}
 
+static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct spi_master *master[PCH_SPI_MAX_DEV];
 	struct pch_spi_board_data *board_dat;
+	void __iomem *io_remap_addr;
 	int retval;
-
-	dev_dbg(&pdev->dev, "%s ENTRY\n", __func__);
+	int i, j;
 
 	/* allocate memory for private data */
 	board_dat = kzalloc(sizeof(struct pch_spi_board_data), GFP_KERNEL);
@@ -1002,14 +1068,9 @@ static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		dev_err(&pdev->dev,
 			" %s memory allocation for private data failed\n",
 			__func__);
-		retval = -ENOMEM;
-		goto err_kmalloc;
+		return -ENOMEM;
 	}
 
-	dev_dbg(&pdev->dev,
-		"%s memory allocation for private data success\n", __func__);
-
-	/* enable PCI device */
 	retval = pci_enable_device(pdev);
 	if (retval != 0) {
 		dev_err(&pdev->dev, "%s pci_enable_device FAILED\n", __func__);
@@ -1017,128 +1078,97 @@ static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto err_pci_en_device;
 	}
 
-	dev_dbg(&pdev->dev, "%s pci_enable_device returned=%d\n",
-		__func__, retval);
-
+	pci_set_drvdata(pdev, board_dat);
 	board_dat->pdev = pdev;
+	board_dat->num = id->driver_data;
+
+	for (i = 0; i < board_dat->num; i++) {
+		master[i] = spi_alloc_master(&pdev->dev,
+					     sizeof(struct pch_spi_data));
+		if (master[i] == NULL) {
+			dev_err(&pdev->dev, "%s spi_alloc failed.\n", __func__);
+			retval = -ENOMEM;
+			goto err_spi_alloc;
+		}
+		board_dat->data[i] = spi_master_get_devdata(master[i]);
+		board_dat->data[i]->master = master[i];
+	}
 
-	/* alllocate memory for SPI master */
-	master = spi_alloc_master(&pdev->dev, sizeof(struct pch_spi_data));
-	if (master == NULL) {
+	io_remap_addr = pci_iomap(board_dat->pdev, 1, 0);
+	if (!io_remap_addr) {
+		dev_err(&board_dat->pdev->dev,
+			"%s pci_iomap failed\n", __func__);
 		retval = -ENOMEM;
-		dev_err(&pdev->dev, "%s Fail.\n", __func__);
-		goto err_spi_alloc_master;
+		goto err_pci_iomap;
 	}
 
-	dev_dbg(&pdev->dev,
-		"%s spi_alloc_master returned non NULL\n", __func__);
-
-	/* initialize members of SPI master */
-	master->bus_num = -1;
-	master->num_chipselect = PCH_MAX_CS;
-	master->setup = pch_spi_setup;
-	master->transfer = pch_spi_transfer;
-	dev_dbg(&pdev->dev,
-		"%s transfer member of SPI master initialized\n", __func__);
-
-	board_dat->data = spi_master_get_devdata(master);
-
-	board_dat->data->master = master;
-	board_dat->data->n_curnt_chip = 255;
-	board_dat->data->board_dat = board_dat;
-	board_dat->data->status = STATUS_RUNNING;
+	retval = pci_request_regions(board_dat->pdev, KBUILD_MODNAME);
+	if (retval != 0) {
+		dev_err(&board_dat->pdev->dev,
+			"%s request_region failed\n", __func__);
+		goto err_req_reg;
+	}
 
-	INIT_LIST_HEAD(&board_dat->data->queue);
-	spin_lock_init(&board_dat->data->lock);
-	INIT_WORK(&board_dat->data->work, pch_spi_process_messages);
-	init_waitqueue_head(&board_dat->data->wait);
+	for (i = 0; i < board_dat->num; i++)
+		board_dat->data[i]->io_remap_addr = io_remap_addr +
+						    (PCH_SPI_ADDRESS_SIZE * i);
 
-	/* allocate resources for PCH SPI */
-	retval = pch_spi_get_resources(board_dat);
+	retval = request_irq(pdev->irq, pch_spi_handler,
+			     IRQF_SHARED, KBUILD_MODNAME, board_dat);
 	if (retval) {
-		dev_err(&pdev->dev, "%s fail(retval=%d)\n", __func__, retval);
-		goto err_spi_get_resources;
+		dev_err(&board_dat->pdev->dev,
+			"%s request_irq failed\n", __func__);
+		goto err_req_irq;
 	}
 
-	dev_dbg(&pdev->dev, "%s pch_spi_get_resources returned=%d\n",
-		__func__, retval);
-
-	/* save private data in dev */
-	pci_set_drvdata(pdev, board_dat);
-	dev_dbg(&pdev->dev, "%s invoked pci_set_drvdata\n", __func__);
-
-	/* set master mode */
-	pch_spi_set_master_mode(master);
-	dev_dbg(&pdev->dev,
-		"%s invoked pch_spi_set_master_mode\n", __func__);
+	platform_driver_register(&pch_spi_pd_driver);
 
-	/* Register the controller with the SPI core. */
-	retval = spi_register_master(master);
-	if (retval != 0) {
-		dev_err(&pdev->dev,
-			"%s spi_register_master FAILED\n", __func__);
-		goto err_spi_reg_master;
+	for (i = 0; i < board_dat->num; i++) {
+		retval = pch_spi_register_slot(board_dat, PCH_SPI_ADDRESS_SIZE,
+					       "pch-spi", i);
+		if (retval)
+			goto err_spi_reg;
 	}
 
-	dev_dbg(&pdev->dev, "%s spi_register_master returned=%d\n",
-		__func__, retval);
-
-
 	return 0;
 
-err_spi_reg_master:
-	spi_unregister_master(master);
-err_spi_get_resources:
-err_spi_alloc_master:
-	spi_master_put(master);
+err_spi_reg:
+	platform_driver_unregister(&pch_spi_pd_driver);
+	free_irq(pdev->irq, board_dat);
+err_req_irq:
+	pci_release_regions(board_dat->pdev);
+	board_dat->pci_req_sts = false;
+err_req_reg:
+	pci_iounmap(board_dat->pdev, board_dat->data[0]->io_remap_addr);
+err_pci_iomap:
+err_spi_alloc:
+	for (j = 0; j < i; j++)
+		spi_master_put(master[j]);
 	pci_disable_device(pdev);
 err_pci_en_device:
 	kfree(board_dat);
-err_kmalloc:
+
 	return retval;
 }
 
 static void pch_spi_remove(struct pci_dev *pdev)
 {
 	struct pch_spi_board_data *board_dat = pci_get_drvdata(pdev);
-	int count;
+	int i;
 
-	dev_dbg(&pdev->dev, "%s ENTRY\n", __func__);
-
-	if (!board_dat) {
-		dev_err(&pdev->dev,
-			"%s pci_get_drvdata returned NULL\n", __func__);
-		return;
-	}
-
-	/* check for any pending messages; no action is taken if the queue
-	 * is still full; but at least we tried.  Unload anyway */
-	count = 500;
-	spin_lock(&board_dat->data->lock);
-	board_dat->data->status = STATUS_EXITING;
-	while ((list_empty(&board_dat->data->queue) == 0) && --count) {
-		dev_dbg(&board_dat->pdev->dev, "%s :queue not empty\n",
-			__func__);
-		spin_unlock(&board_dat->data->lock);
-		msleep(PCH_SLEEP_TIME);
-		spin_lock(&board_dat->data->lock);
-	}
-	spin_unlock(&board_dat->data->lock);
+	for (i = 0; i < board_dat->num; i++)
+		platform_device_unregister(&board_dat->data[i]->plat_dev);
 
-	/* Free resources allocated for PCH SPI */
-	pch_spi_free_resources(board_dat);
+	platform_driver_unregister(&pch_spi_pd_driver);
+	free_irq(pdev->irq, board_dat);
+	pci_release_regions(board_dat->pdev);
+	pci_iounmap(board_dat->pdev, board_dat->data[0]->io_remap_addr);
 
-	spi_unregister_master(board_dat->data->master);
+	for (i = 0; i < board_dat->num; i++)
+		spi_master_put(board_dat->data[i]->master);
 
-	/* free memory for private data */
-	kfree(board_dat);
-
-	pci_set_drvdata(pdev, NULL);
-
-	/* disable PCI device */
 	pci_disable_device(pdev);
-
-	dev_dbg(&pdev->dev, "%s invoked pci_disable_device\n", __func__);
+	kfree(board_dat);
 }
 
 #ifdef CONFIG_PM
@@ -1146,6 +1176,7 @@ static int pch_spi_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	u8 count;
 	int retval;
+	int i;
 
 	struct pch_spi_board_data *board_dat = pci_get_drvdata(pdev);
 
@@ -1162,25 +1193,29 @@ static int pch_spi_suspend(struct pci_dev *pdev, pm_message_t state)
 
 	/* check if the current message is processed:
 	   Only after thats done the transfer will be suspended */
-	count = 255;
-	while ((--count) > 0) {
-		if (!(board_dat->data->bcurrent_msg_processing)) {
-			dev_dbg(&pdev->dev, "%s board_dat->data->bCurrent_"
-				"msg_processing = false\n", __func__);
-			break;
-		} else {
-			dev_dbg(&pdev->dev, "%s board_dat->data->bCurrent_msg_"
-				"processing = true\n", __func__);
+	for (i = 0; i < board_dat->num; i++) {
+		count = 255;
+		while ((--count) > 0) {
+			if (!(board_dat->data[i]->bcurrent_msg_processing)) {
+				dev_dbg(&pdev->dev, "%s board_dat->data->bCurre"
+					"nt_msg_processing=false\n", __func__);
+				break;
+			} else {
+				dev_dbg(&pdev->dev, "%s board_dat->data->bCurre"
+					"nt_msg_processing=true\n", __func__);
+			}
+			msleep(PCH_SLEEP_TIME);
 		}
-		msleep(PCH_SLEEP_TIME);
 	}
 
 	/* Free IRQ */
 	if (board_dat->irq_reg_sts) {
 		/* disable all interrupts */
-		pch_spi_setclr_reg(board_dat->data->master, PCH_SPCR, 0,
-				   PCH_ALL);
-		pch_spi_reset(board_dat->data->master);
+		for (i = 0; i < board_dat->num; i++) {
+			pch_spi_setclr_reg(board_dat->data[i]->master, PCH_SPCR,
+					   0, PCH_ALL);
+			pch_spi_reset(board_dat->data[i]->master);
+		}
 
 		free_irq(board_dat->pdev->irq, board_dat);
 
@@ -1221,6 +1256,7 @@ static int pch_spi_suspend(struct pci_dev *pdev, pm_message_t state)
 static int pch_spi_resume(struct pci_dev *pdev)
 {
 	int retval;
+	int i;
 
 	struct pch_spi_board_data *board = pci_get_drvdata(pdev);
 	dev_dbg(&pdev->dev, "%s ENTRY\n", __func__);
@@ -1259,8 +1295,10 @@ static int pch_spi_resume(struct pci_dev *pdev)
 			board->irq_reg_sts = true;
 
 			/* reset PCH SPI h/w */
-			pch_spi_reset(board->data->master);
-			pch_spi_set_master_mode(board->data->master);
+			for (i = 0; i < board->num; i++) {
+				pch_spi_reset(board->data[i]->master);
+				pch_spi_set_master_mode(board->data[i]->master);
+			}
 
 			/* set suspend status to false */
 			board->suspend_sts = false;
-- 
1.7.3.4

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