[PATCH 5/7] add GPMI support for imx28

These files contain the code to implement the GPMI in the imx28.

Signed-off-by: Huang Shijie <redacted>
---
 drivers/mtd/nand/gpmi-nfc/bch-regs-imx28.h  |  557 +++++++++++++++++++++++++++
 drivers/mtd/nand/gpmi-nfc/gpmi-regs-imx28.h |  421 ++++++++++++++++++++
 drivers/mtd/nand/gpmi-nfc/hal-imx28.c       |  503 ++++++++++++++++++++++++
 drivers/mtd/nand/gpmi-nfc/rom-imx28.c       |   66 ++++
 4 files changed, 1547 insertions(+), 0 deletions(-)
 create mode 100644 drivers/mtd/nand/gpmi-nfc/bch-regs-imx28.h
 create mode 100644 drivers/mtd/nand/gpmi-nfc/gpmi-regs-imx28.h
 create mode 100644 drivers/mtd/nand/gpmi-nfc/hal-imx28.c
 create mode 100644 drivers/mtd/nand/gpmi-nfc/rom-imx28.c

diff --git a/drivers/mtd/nand/gpmi-nfc/bch-regs-imx28.h b/drivers/mtd/nand/gpmi-nfc/bch-regs-imx28.h
new file mode 100644
index 0000000..692db08
--- /dev/null
+++ b/drivers/mtd/nand/gpmi-nfc/bch-regs-imx28.h

@@ -0,0 +1,557 @@
+/*
+ * Freescale GPMI NFC NAND Flash Driver
+ *
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * Xml Revision: 2.5
+ * Template revision: 26195
+ */
+
+#ifndef __GPMI_NFC_BCH_REGS_H
+#define __GPMI_NFC_BCH_REGS_H
+
+/*============================================================================*/
+
+#define HW_BCH_CTRL	(0x00000000)
+#define HW_BCH_CTRL_SET	(0x00000004)
+#define HW_BCH_CTRL_CLR	(0x00000008)
+#define HW_BCH_CTRL_TOG	(0x0000000c)

+#define BM_BCH_CTRL_SFTRST	0x80000000
+#define BV_BCH_CTRL_SFTRST__RUN   0x0
+#define BV_BCH_CTRL_SFTRST__RESET 0x1
+#define BM_BCH_CTRL_CLKGATE	0x40000000
+#define BV_BCH_CTRL_CLKGATE__RUN     0x0
+#define BV_BCH_CTRL_CLKGATE__NO_CLKS 0x1
+#define BP_BCH_CTRL_RSVD5	23
+#define BM_BCH_CTRL_RSVD5	0x3F800000
+#define BF_BCH_CTRL_RSVD5(v)  \
+		(((v) << 23) & BM_BCH_CTRL_RSVD5)
+#define BM_BCH_CTRL_DEBUGSYNDROME	0x00400000
+#define BP_BCH_CTRL_RSVD4	20
+#define BM_BCH_CTRL_RSVD4	0x00300000
+#define BF_BCH_CTRL_RSVD4(v)  \
+		(((v) << 20) & BM_BCH_CTRL_RSVD4)
+#define BP_BCH_CTRL_M2M_LAYOUT	18
+#define BM_BCH_CTRL_M2M_LAYOUT	0x000C0000
+#define BF_BCH_CTRL_M2M_LAYOUT(v)  \
+		(((v) << 18) & BM_BCH_CTRL_M2M_LAYOUT)
+#define BM_BCH_CTRL_M2M_ENCODE	0x00020000
+#define BM_BCH_CTRL_M2M_ENABLE	0x00010000
+#define BP_BCH_CTRL_RSVD3	11
+#define BM_BCH_CTRL_RSVD3	0x0000F800
+#define BF_BCH_CTRL_RSVD3(v)  \
+		(((v) << 11) & BM_BCH_CTRL_RSVD3)
+#define BM_BCH_CTRL_DEBUG_STALL_IRQ_EN	0x00000400
+#define BM_BCH_CTRL_RSVD2	0x00000200
+#define BM_BCH_CTRL_COMPLETE_IRQ_EN	0x00000100
+#define BP_BCH_CTRL_RSVD1	4
+#define BM_BCH_CTRL_RSVD1	0x000000F0
+#define BF_BCH_CTRL_RSVD1(v)  \
+		(((v) << 4) & BM_BCH_CTRL_RSVD1)
+#define BM_BCH_CTRL_BM_ERROR_IRQ	0x00000008
+#define BM_BCH_CTRL_DEBUG_STALL_IRQ	0x00000004
+#define BM_BCH_CTRL_RSVD0	0x00000002
+#define BM_BCH_CTRL_COMPLETE_IRQ	0x00000001
+

diff --git a/drivers/mtd/nand/gpmi-nfc/gpmi-regs-imx28.h b/drivers/mtd/nand/gpmi-nfc/gpmi-regs-imx28.h
new file mode 100644
index 0000000..dcb3b7d
--- /dev/null
+++ b/drivers/mtd/nand/gpmi-nfc/gpmi-regs-imx28.h

@@ -0,0 +1,421 @@
+/*
+ * Freescale GPMI NFC NAND Flash Driver
+ *
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * Xml Revision: 2.2
+ * Template revision: 26195
+ */
+
+#ifndef __GPMI_NFC_GPMI_REGS_H
+#define __GPMI_NFC_GPMI_REGS_H
+
+/*============================================================================*/
+
+#define HW_GPMI_CTRL0	(0x00000000)
+#define HW_GPMI_CTRL0_SET	(0x00000004)
+#define HW_GPMI_CTRL0_CLR	(0x00000008)
+#define HW_GPMI_CTRL0_TOG	(0x0000000c)
+
+#define BM_GPMI_CTRL0_SFTRST	0x80000000
+#define BV_GPMI_CTRL0_SFTRST__RUN   0x0
+#define BV_GPMI_CTRL0_SFTRST__RESET 0x1
+#define BM_GPMI_CTRL0_CLKGATE	0x40000000
+#define BV_GPMI_CTRL0_CLKGATE__RUN     0x0
+#define BV_GPMI_CTRL0_CLKGATE__NO_CLKS 0x1
+#define BM_GPMI_CTRL0_RUN	0x20000000
+#define BV_GPMI_CTRL0_RUN__IDLE 0x0
+#define BV_GPMI_CTRL0_RUN__BUSY 0x1
+#define BM_GPMI_CTRL0_DEV_IRQ_EN	0x10000000
+#define BM_GPMI_CTRL0_LOCK_CS	0x08000000
+#define BV_GPMI_CTRL0_LOCK_CS__DISABLED 0x0
+#define BV_GPMI_CTRL0_LOCK_CS__ENABLED  0x1
+#define BM_GPMI_CTRL0_UDMA	0x04000000
+#define BV_GPMI_CTRL0_UDMA__DISABLED 0x0
+#define BV_GPMI_CTRL0_UDMA__ENABLED  0x1
+#define BP_GPMI_CTRL0_COMMAND_MODE	24
+#define BM_GPMI_CTRL0_COMMAND_MODE	0x03000000
+#define BF_GPMI_CTRL0_COMMAND_MODE(v)  \
+		(((v) << 24) & BM_GPMI_CTRL0_COMMAND_MODE)
+#define BV_GPMI_CTRL0_COMMAND_MODE__WRITE            0x0
+#define BV_GPMI_CTRL0_COMMAND_MODE__READ             0x1
+#define BV_GPMI_CTRL0_COMMAND_MODE__READ_AND_COMPARE 0x2
+#define BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY   0x3
+#define BM_GPMI_CTRL0_WORD_LENGTH	0x00800000
+#define BV_GPMI_CTRL0_WORD_LENGTH__16_BIT 0x0
+#define BV_GPMI_CTRL0_WORD_LENGTH__8_BIT  0x1
+#define BP_GPMI_CTRL0_CS	20
+#define BM_GPMI_CTRL0_CS	0x00700000
+#define BF_GPMI_CTRL0_CS(v)  \
+		(((v) << 20) & BM_GPMI_CTRL0_CS)
+#define BP_GPMI_CTRL0_ADDRESS	17
+#define BM_GPMI_CTRL0_ADDRESS	0x000E0000
+#define BF_GPMI_CTRL0_ADDRESS(v)  \
+		(((v) << 17) & BM_GPMI_CTRL0_ADDRESS)
+#define BV_GPMI_CTRL0_ADDRESS__NAND_DATA 0x0
+#define BV_GPMI_CTRL0_ADDRESS__NAND_CLE  0x1
+#define BV_GPMI_CTRL0_ADDRESS__NAND_ALE  0x2
+#define BM_GPMI_CTRL0_ADDRESS_INCREMENT	0x00010000
+#define BV_GPMI_CTRL0_ADDRESS_INCREMENT__DISABLED 0x0
+#define BV_GPMI_CTRL0_ADDRESS_INCREMENT__ENABLED  0x1
+#define BP_GPMI_CTRL0_XFER_COUNT	0
+#define BM_GPMI_CTRL0_XFER_COUNT	0x0000FFFF
+#define BF_GPMI_CTRL0_XFER_COUNT(v)  \
+		(((v) << 0) & BM_GPMI_CTRL0_XFER_COUNT)

diff --git a/drivers/mtd/nand/gpmi-nfc/hal-imx28.c b/drivers/mtd/nand/gpmi-nfc/hal-imx28.c
new file mode 100644
index 0000000..ff87d7f
--- /dev/null
+++ b/drivers/mtd/nand/gpmi-nfc/hal-imx28.c

@@ -0,0 +1,503 @@
+/*
+ * Freescale GPMI NFC NAND Flash Driver
+ *
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ * Copyright (C) 2008 Embedded Alley Solutions, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include "gpmi-nfc.h"
+#include "gpmi-regs-imx28.h"
+#include "bch-regs-imx28.h"
+

+static int send_command(struct gpmi_nfc_data *this)
+{
+	struct dma_chan *channel = get_dma_chan(this);
+	struct mil *mil	= &this->mil;
+	struct dma_async_tx_descriptor *desc;
+	struct scatterlist *sgl;
+	u32 pio[3];
+
+	/* [1] send out the PIO words */
+	pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(BV_GPMI_CTRL0_COMMAND_MODE__WRITE)
+		| BM_GPMI_CTRL0_WORD_LENGTH
+		| BF_GPMI_CTRL0_CS(mil->current_chip)
+		| BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_CLE)
+		| BM_GPMI_CTRL0_ADDRESS_INCREMENT
+		| BF_GPMI_CTRL0_XFER_COUNT(mil->command_length);
+	pio[1] = pio[2] = 0;
+	desc = channel->device->device_prep_slave_sg(channel,
+					(struct scatterlist *)pio,
+					ARRAY_SIZE(pio), DMA_NONE, 0);
+	if (!desc) {
+		log("step 1 error");
+		return -1;
+	}
+
+	/* [2] send out the COMMAND + ADDRESS string stored in @buffer */
+	sgl = &mil->cmd_sgl;
+
+	dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE);
+	sgl->length = mil->command_length;