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openwrt/target/linux/coldfire/patches/052-m547x_8x_dspi.patch

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From acc2bc0cd419c176820d4a384eb36498a066366d Mon Sep 17 00:00:00 2001
From: Kurt Mahan <kmahan@freescale.com>
Date: Wed, 30 Apr 2008 14:20:48 -0600
Subject: [PATCH] DSPI support for M547x/M548x.
LTIBName: m547x-8x-dspi
Signed-off-by: Kurt Mahan <kmahan@freescale.com>
---
arch/m68k/coldfire/Makefile | 1 +
arch/m68k/coldfire/m547x_8x-devices.c | 150 +++++++++++++
drivers/spi/Makefile | 3 +-
drivers/spi/spi_coldfire.c | 382 ++++++++++++++++-----------------
include/asm-m68k/m5485dspi.h | 144 +++++++++++++
include/asm-m68k/mcfqspi.h | 1 +
include/asm-m68k/mcfsim.h | 1 +
7 files changed, 485 insertions(+), 197 deletions(-)
create mode 100644 arch/m68k/coldfire/m547x_8x-devices.c
create mode 100644 include/asm-m68k/m5485dspi.h
--- a/arch/m68k/coldfire/Makefile
+++ b/arch/m68k/coldfire/Makefile
@@ -10,4 +10,5 @@ endif
obj-$(CONFIG_PCI) += pci.o mcf5445x-pci.o iomap.o
obj-$(CONFIG_M54455) += mcf5445x-devices.o
+obj-$(CONFIG_M547X_8X) += m547x_8x-devices.o
obj-$(CONFIG_MCD_DMA) += m547x_8x-dma.o
--- /dev/null
+++ b/arch/m68k/coldfire/m547x_8x-devices.c
@@ -0,0 +1,150 @@
+/*
+ * arch/m68k/coldfire/m547x_8x-devices.c
+ *
+ * Coldfire M547x/M548x Platform Device Configuration
+ *
+ * Copyright (c) 2008 Freescale Semiconductor, Inc.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <linux/spi/spi.h>
+
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfqspi.h>
+
+
+#ifdef CONFIG_SPI
+/*
+ *
+ * DSPI
+ *
+ */
+
+/* number of supported SPI selects */
+#define SPI_NUM_CHIPSELECTS 4
+
+void coldfire_spi_cs_control(u8 cs, u8 command)
+{
+ /* nothing special required */
+}
+
+static struct spi_board_info spi_board_info[] = {
+ /* no board info */
+};
+
+static int spi_irq_list[] = {
+ /* IRQ, ICR Offset, ICR Val, Mask */
+ 64 + ISC_DSPI_OVRFW, 0, 0, 0,
+ 64 + ISC_DSPI_RFOF, 0, 0, 0,
+ 64 + ISC_DSPI_RFDF, 0, 0, 0,
+ 64 + ISC_DSPI_TFUF, 0, 0, 0,
+ 64 + ISC_DSPI_TCF, 0, 0, 0,
+ 64 + ISC_DSPI_TFFF, 0, 0, 0,
+ 64 + ISC_DSPI_EOQF, 0, 0, 0,
+ 0,0,0,0,
+};
+
+static struct coldfire_spi_master coldfire_master_info = {
+ .bus_num = 1,
+ .num_chipselect = SPI_NUM_CHIPSELECTS,
+ .irq_list = spi_irq_list,
+ .irq_source = 0, /* not used */
+ .irq_vector = 0, /* not used */
+ .irq_mask = 0, /* not used */
+ .irq_lp = 0, /* not used */
+ .par_val = 0, /* not used */
+ .cs_control = coldfire_spi_cs_control,
+};
+
+static struct resource coldfire_spi_resources[] = {
+ [0] = {
+ .name = "spi-par",
+ .start = MCF_MBAR + 0x00000a50, /* PAR_DSPI */
+ .end = MCF_MBAR + 0x00000a50, /* PAR_DSPI */
+ .flags = IORESOURCE_MEM
+ },
+
+ [1] = {
+ .name = "spi-module",
+ .start = MCF_MBAR + 0x00008a00, /* DSPI MCR Base */
+ .end = MCF_MBAR + 0x00008ab8, /* DSPI mem map end */
+ .flags = IORESOURCE_MEM
+ },
+
+ [2] = {
+ .name = "spi-int-level",
+ .start = MCF_MBAR + 0x740, /* ICR start */
+ .end = MCF_MBAR + 0x740 + ISC_DSPI_EOQF, /* ICR end */
+ .flags = IORESOURCE_MEM
+ },
+
+ [3] = {
+ .name = "spi-int-mask",
+ .start = MCF_MBAR + 0x70c, /* IMRL */
+ .end = MCF_MBAR + 0x70c, /* IMRL */
+ .flags = IORESOURCE_MEM
+ }
+};
+
+static struct platform_device coldfire_spi = {
+ .name = "spi_coldfire",
+ .id = -1,
+ .resource = coldfire_spi_resources,
+ .num_resources = ARRAY_SIZE(coldfire_spi_resources),
+ .dev = {
+ .platform_data = &coldfire_master_info,
+ }
+};
+
+/**
+ * m547x_8x_spi_init - Initialize SPI
+ */
+static int __init m547x_8x_spi_init(void)
+{
+ int retval;
+
+ /* initialize the DSPI PAR */
+ MCF_GPIO_PAR_DSPI = (MCF_GPIO_PAR_DSPI_PAR_CS5 |
+ MCF_GPIO_PAR_DSPI_PAR_CS3_DSPICS |
+ MCF_GPIO_PAR_DSPI_PAR_CS2_DSPICS |
+ MCF_GPIO_PAR_DSPI_PAR_CS0_DSPICS |
+ MCF_GPIO_PAR_DSPI_PAR_SCK_SCK |
+ MCF_GPIO_PAR_DSPI_PAR_SIN_SIN |
+ MCF_GPIO_PAR_DSPI_PAR_SOUT_SOUT);
+
+ /* register device */
+ retval = platform_device_register(&coldfire_spi);
+ if (retval < 0) {
+ printk(KERN_ERR "SPI-m547x_8x: platform_device_register failed with code=%d\n", retval);
+ goto out;
+ }
+
+ /* register board info */
+ if (ARRAY_SIZE(spi_board_info))
+ retval = spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+
+out:
+ return retval;
+}
+#endif
+
+
+/**
+ * m547x_8x_init_devices - Initialize M547X_8X devices
+ *
+ * Returns 0 on success.
+ */
+static int __init m547x_8x_init_devices(void)
+{
+#ifdef CONFIG_SPI
+ m547x_8x_spi_init();
+#endif
+
+ return 0;
+}
+arch_initcall(m547x_8x_init_devices);
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -18,7 +18,8 @@ obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.
obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
obj-$(CONFIG_SPI_AU1550) += au1550_spi.o
obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
-obj-$(CONFIG_SPI_COLDFIRE) += spi_coldfire.o spi-m5445x.o
+# obj-$(CONFIG_SPI_COLDFIRE) += spi_coldfire.o spi-m5445x.o
+obj-$(CONFIG_SPI_COLDFIRE) += spi_coldfire.o
obj-$(CONFIG_SPI_GPIO) += spi_gpio.o
obj-$(CONFIG_SPI_IMX) += spi_imx.o
obj-$(CONFIG_SPI_LM70_LLP) += spi_lm70llp.o
--- a/drivers/spi/spi_coldfire.c
+++ b/drivers/spi/spi_coldfire.c
@@ -1,29 +1,39 @@
-/****************************************************************************/
-
/*
- * spi_coldfire.c - Master QSPI/DSPI controller for the ColdFire processors
+ * spi_coldfire.c - Master QSPI/DSPI controller for the ColdFire processors
+ *
*
* (C) Copyright 2005, Intec Automation,
* Mike Lavender (mike@steroidmicros)
*
- * (C) Copyright 2007, Freescale Inc,
- * Yaroslav Vinogradov (yaroslav.vinogradov@freescale.com)
+ * (C) Copyright 2007-2008, Freescale Inc,
+ * Yaroslav Vinogradov
+ * Andrey Butok
+ * Kurt Mahan
*
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* ------------------------------------------------------------------------- */
+ * 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
+ *
+ ***************************************************************************
+ * Changes:
+ * v0.003 12 February 2008 Andrey Butok, Freescale Semiconductor
+ * Added suport of MCF5227x DSPI module.
+ * v0.002 2007 Yaroslav Vinogradov, Freescale Semiconductor
+ * Added suport of MCF5445x DSPI module.
+ * v0.001 2005 Mike Lavender, Intec Automation,
+ * Intial version. Coldfire QSPI master driver.
+ *
+ */
/****************************************************************************/
@@ -46,41 +56,52 @@
#include <asm/mcfsim.h>
#include <asm/mcfqspi.h>
#include <asm/coldfire.h>
-#include <asm/virtconvert.h>
#if defined(CONFIG_M54455)
+ #include <asm/virtconvert.h>
+
#define SPI_DSPI
#if defined(CONFIG_SPI_COLDFIRE_DSPI_EDMA)
#define SPI_DSPI_EDMA
#ifdef CONFIG_MMU
#define SPI_USE_MMU
#endif
+ #include <asm/mcf5445x_edma.h>
#endif
+
+ #include <asm/mcf5445x_dspi.h>
#endif
-#ifdef SPI_DSPI
-#include <asm/mcf5445x_dspi.h>
+#if defined(CONFIG_M547X_8X)
+ #define SPI_DSPI
+
+ #include <asm/virtconvert.h>
+ #include <asm/m5485dspi.h>
+#endif
+#ifdef CONFIG_M5227x
+ #define SPI_DSPI
+ #if defined(CONFIG_SPI_COLDFIRE_DSPI_EDMA)
+ #define SPI_DSPI_EDMA
+ #endif
#endif
+
#if defined(SPI_DSPI_EDMA)
/* edma buffer size in transfer units (32bits) */
#define EDMA_BUFFER_SIZE (PAGE_SIZE/4)
-#define EDMA_BUFSIZE_KMALLOC (EDMA_BUFFER_SIZE*4)
-
-#define DSPI_DMA_RX_TCD 12
-#define DSPI_DMA_TX_TCD 13
+#define EDMA_BUFSIZE_KMALLOC (EDMA_BUFFER_SIZE*4)
+#define DSPI_DMA_RX_TCD MCF_EDMA_CHAN_DSPI_RX
+#define DSPI_DMA_TX_TCD MCF_EDMA_CHAN_DSPI_TX
-#include <asm/coldfire_edma.h>
-#include <asm/mcf5445x_edma.h>
+#include <asm/mcf_edma.h>
#endif
-
MODULE_AUTHOR("Mike Lavender");
-MODULE_DESCRIPTION("ColdFire QSPI Contoller");
+MODULE_DESCRIPTION("ColdFire SPI Contoller");
MODULE_LICENSE("GPL");
#define DRIVER_NAME "Coldfire QSPI/DSPI"
@@ -92,7 +113,6 @@ MODULE_LICENSE("GPL");
*/
#define QSPI_RAM_SIZE 0x10 /* 16 word table */
-
#define QSPI_TRANSMIT_RAM 0x00
#define QSPI_RECEIVE_RAM 0x10
#define QSPI_COMMAND_RAM 0x20
@@ -296,13 +316,10 @@ struct driver_data {
u32 *dspi_rser; /* DSPI RSER register */
u32 *dspi_sr; /* DSPI status register */
u8 dspi_ctas; /* DSPI CTAS value*/
-
#if defined(SPI_DSPI_EDMA)
void* edma_tx_buf;
void* edma_rx_buf;
#endif
-
-
#else
u16 *qmr; /* QSPI mode register */
u16 *qdlyr; /* QSPI delay register */
@@ -312,7 +329,11 @@ struct driver_data {
u16 *qdr; /* QSPI data register */
u16 *qcr; /* QSPI command register */
#endif
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ u16 *par; /* Pin assignment register */
+#else
u8 *par; /* Pin assignment register */
+#endif
u8 *int_icr; /* Interrupt level and priority register */
u32 *int_mr; /* Interrupt mask register */
void (*cs_control)(u8 cs, u8 command);
@@ -327,8 +348,6 @@ struct driver_data {
* SPI local functions
*/
-//#define SPI_COLDFIRE_DEBUG
-
static void *next_transfer(struct driver_data *drv_data)
{
struct spi_message *msg = drv_data->cur_msg;
@@ -387,11 +406,9 @@ static int write(struct driver_data *drv
int tx_word;
#if defined(SPI_DSPI)
-
#if defined(SPI_DSPI_EDMA)
u32* edma_wr;
#endif
-
u16 d16;
u8 d8;
u32 dspi_pushr;
@@ -400,9 +417,9 @@ static int write(struct driver_data *drv
tx_word = is_word_transfer(drv_data);
- // If we are in word mode, but only have a single byte to transfer
- // then switch to byte mode temporarily. Will switch back at the
- // end of the transfer.
+ /* If we are in word mode, but only have a single byte to transfer
+ * then switch to byte mode temporarily. Will switch back at the
+ * end of the transfer. */
if (tx_word && ((drv_data->tx_end - drv_data->tx) == 1)) {
drv_data->flags |= TRAN_STATE_WORD_ODD_NUM;
set_8bit_transfer_mode(drv_data);
@@ -411,12 +428,10 @@ static int write(struct driver_data *drv
#if defined(SPI_DSPI)
-
#if defined(SPI_DSPI_EDMA)
edma_wr = (u32*)(drv_data->edma_tx_buf);
#endif
-
#if defined(SPI_DSPI_EDMA)
while ((drv_data->tx < drv_data->tx_end) && (tx_count < EDMA_BUFFER_SIZE)) {
#else
@@ -432,19 +447,16 @@ static int write(struct driver_data *drv
}
dspi_pushr = MCF_DSPI_DTFR_TXDATA(d16)
- | DSPI_CS(drv_data->cs)
- | MCF_DSPI_DTFR_CTAS(drv_data->dspi_ctas)
- //| MCF_DSPI_DTFR_CONT
- ;
-
+ | DSPI_CS(drv_data->cs)
+ | MCF_DSPI_DTFR_CTAS(drv_data->dspi_ctas);
drv_data->tx += 2;
#if defined(SPI_DSPI_EDMA)
if (drv_data->tx == drv_data->tx_end || tx_count==EDMA_BUFFER_SIZE-1) {
-#else
+#else
if (drv_data->tx == drv_data->tx_end || tx_count==DSPI_FIFO_SIZE-1) {
-#endif
- // last transfer in queue
+#endif
+ /* last transfer in the queue */
dspi_pushr |= MCF_DSPI_DTFR_EOQ;
if (drv_data->cs_change) {
dspi_pushr &= ~MCF_DSPI_DTFR_CONT;
@@ -453,14 +465,13 @@ static int write(struct driver_data *drv
if (first) {
first = 0;
- dspi_pushr |= MCF_DSPI_DTFR_CTCNT; // clear counter
+ dspi_pushr |= MCF_DSPI_DTFR_CTCNT; /* clear counter */
}
#if defined(SPI_DSPI_EDMA)
*edma_wr = dspi_pushr;
- edma_wr++;
+ edma_wr++;
#else
*drv_data->dspi_dtfr = dspi_pushr;
- //MCF_DSPI_DTFR = dspi_pushr;
#endif
@@ -473,14 +484,13 @@ static int write(struct driver_data *drv
dspi_pushr = MCF_DSPI_DTFR_TXDATA(d8)
| DSPI_CS(drv_data->cs)
- /* | MCF_DSPI_DTFR_PCS5 | */
| MCF_DSPI_DTFR_CTAS(drv_data->dspi_ctas)
| MCF_DSPI_DTFR_CONT;
drv_data->tx++;
if (drv_data->tx == drv_data->tx_end || tx_count==DSPI_FIFO_SIZE-1) {
- // last transfer in queue
+ /* last transfer in the queue */
dspi_pushr |= MCF_DSPI_DTFR_EOQ;
if (drv_data->cs_change) {
dspi_pushr &= ~MCF_DSPI_DTFR_CONT;
@@ -489,16 +499,15 @@ static int write(struct driver_data *drv
if (first) {
first = 0;
- dspi_pushr |= MCF_DSPI_DTFR_CTCNT; // clear counter
+ dspi_pushr |= MCF_DSPI_DTFR_CTCNT; /* clear counter */
}
#if defined(SPI_DSPI_EDMA)
*edma_wr = dspi_pushr;
- edma_wr++;
-#else
+ edma_wr++;
+#else
*drv_data->dspi_dtfr = dspi_pushr;
- //MCF_DSPI_DTFR = dspi_pushr;
-#endif
+#endif
}
tx_count++;
@@ -508,8 +517,8 @@ static int write(struct driver_data *drv
if (tx_count>0) {
- // TODO: initiate eDMA transfer
- set_edma_params(DSPI_DMA_TX_TCD,
+ /* TBD: initiate eDMA transfer */
+ mcf_edma_set_tcd_params(DSPI_DMA_TX_TCD,
#ifdef SPI_USE_MMU
virt_to_phys(drv_data->edma_tx_buf),
#else
@@ -517,18 +526,18 @@ static int write(struct driver_data *drv
#endif
(u32)drv_data->dspi_dtfr,
MCF_EDMA_TCD_ATTR_SSIZE_32BIT | MCF_EDMA_TCD_ATTR_DSIZE_32BIT,
- 4, // soff
- 4, // nbytes
- 0, // slast
- tx_count, // citer
- tx_count, // biter
- 0, // doff
- 0, // dlastsga
- 0, // major_int
- 1 // disable_req
+ 4, /* soff */
+ 4, /* nbytes */
+ 0, /* slast */
+ tx_count, /* citer */
+ tx_count, /* biter */
+ 0, /* doff */
+ 0, /* dlastsga */
+ 0, /* major_int */
+ 1 /* disable_req */
);
- set_edma_params(DSPI_DMA_RX_TCD,
+ mcf_edma_set_tcd_params(DSPI_DMA_RX_TCD,
(u32)drv_data->dspi_drfr,
#ifdef SPI_USE_MMU
virt_to_phys(drv_data->edma_rx_buf),
@@ -536,20 +545,20 @@ static int write(struct driver_data *drv
drv_data->edma_rx_buf,
#endif
MCF_EDMA_TCD_ATTR_SSIZE_32BIT | MCF_EDMA_TCD_ATTR_DSIZE_32BIT,
- 0, // soff
- 4, // nbytes
- 0, // slast
- tx_count, // citer
- tx_count, // biter
- 4, // doff
- 0, // dlastsga
- 0, // major_int
- 1 // disable_req
+ 0, /* soff */
+ 4, /* nbytes */
+ 0, /* slast */
+ tx_count, /* citer */
+ tx_count, /* biter */
+ 4, /* doff */
+ 0, /* dlastsga */
+ 0, /* major_int */
+ 1 /* disable_req */
);
- start_edma_transfer(DSPI_DMA_TX_TCD); // transmit SPI data
- start_edma_transfer(DSPI_DMA_RX_TCD); // receive SPI data
+ start_edma_transfer(DSPI_DMA_TX_TCD); /* transmit SPI data */
+ start_edma_transfer(DSPI_DMA_RX_TCD); /* receive SPI data */
}
#endif
@@ -583,9 +592,9 @@ static int write(struct driver_data *drv
| QCR_CONT
| (~((0x01 << drv_data->cs) << 8) & 0x0F00);
- if ( (cmd_count == tx_count - 1)
- && (drv_data->tx == drv_data->tx_end)
- && (drv_data->cs_change) ) {
+ if ( (cmd_count == tx_count - 1)
+ && (drv_data->tx == drv_data->tx_end)
+ && (drv_data->cs_change) ) {
qcr &= ~QCR_CONT;
}
*drv_data->qcr = qcr;
@@ -613,7 +622,6 @@ static int read(struct driver_data *drv_
rx_word = is_word_transfer(drv_data);
#if defined(SPI_DSPI)
-
#if defined(SPI_DSPI_EDMA)
rx_edma = (u32*) drv_data->edma_tx_buf;
while ((drv_data->rx < drv_data->rx_end) && (rx_count < EDMA_BUFFER_SIZE)) {
@@ -646,10 +654,7 @@ static int read(struct driver_data *drv_
}
rx_count++;
}
-
-
#else
-
*drv_data->qar = QSPI_RECEIVE_RAM;
while ((drv_data->rx < drv_data->rx_end) && (rx_count < QSPI_RAM_SIZE)) {
if (rx_word) {
@@ -680,19 +685,18 @@ static inline void qspi_setup_chip(struc
*drv_data->mcr = chip->mcr_val;
- // TODO: remove later
+ /* TBD: remove later */
+/* JKM -- validate */
chip->ctar_val = 0x78560118;
*drv_data->ctar = chip->ctar_val;
*drv_data->dspi_rser = 0
- | MCF_DSPI_DRSER_EOQFE
+ | MCF_DSPI_DRSER_EOQFE
#if defined(SPI_DSPI_EDMA)
- | MCF_DSPI_DRSER_TFFFE
- | MCF_DSPI_DRSER_TFFFS
+ | MCF_DSPI_DRSER_TFFFE
+ | MCF_DSPI_DRSER_TFFFS
#endif
- ;
-
-
+ ;
#else
*drv_data->qmr = chip->qmr_val;
*drv_data->qdlyr = chip->qdlyr_val;
@@ -770,7 +774,6 @@ static irqreturn_t qspi_interrupt(int ir
* transfer tasklet
*/
if (drv_data->flags & TRAN_STATE_WORD_ODD_NUM) {
- //*drv_data->qmr &= ~QMR_BITS;
set_16bit_transfer_mode(drv_data);
}
@@ -857,10 +860,8 @@ static void pump_transfers(unsigned long
if (message->state == START_STATE) {
qspi_setup_chip(drv_data);
- if (drv_data->cs_control) {
- //printk( "m s\n" );
- drv_data->cs_control(message->spi->chip_select, QSPI_CS_ASSERT);
- }
+ if (drv_data->cs_control)
+ drv_data->cs_control(message->spi->chip_select, QSPI_CS_ASSERT);
}
/* Delay if requested at end of transfer*/
@@ -902,12 +903,12 @@ static void pump_transfers(unsigned long
}
-static void pump_messages(struct work_struct * work)
+static void pump_messages(struct work_struct *work)
{
struct driver_data *drv_data;
unsigned long flags;
- drv_data = container_of(work, struct driver_data, pump_messages);
+ drv_data = container_of(work, struct driver_data, pump_messages);
/* Lock queue and check for queue work */
spin_lock_irqsave(&drv_data->lock, flags);
@@ -1002,7 +1003,7 @@ static int setup(struct spi_device *spi)
chip->mcr.cont_scke = 0;
chip->mcr.dconf = 0;
chip->mcr.frz = 0;
- chip->mcr.mtfe = 1;
+ chip->mcr.mtfe = 0;
chip->mcr.pcsse = 0;
chip->mcr.rooe = 0;
chip->mcr.pcsis = 0xFF;
@@ -1019,7 +1020,7 @@ static int setup(struct spi_device *spi)
if ((spi->bits_per_word >= 4) && (spi->bits_per_word <= 16)) {
chip->ctar.fmsz = spi->bits_per_word-1;
} else {
- printk(KERN_ERR "coldfire-qspi: invalid wordsize\n");
+ printk(KERN_ERR "coldfire-spi: invalid wordsize\n");
kfree(chip);
return -ENODEV;
}
@@ -1056,9 +1057,9 @@ static int setup(struct spi_device *spi)
#else
- chip->qwr.csiv = 1; // Chip selects are active low
- chip->qmr.master = 1; // Must set to master mode
- chip->qmr.dohie = 1; // Data output high impediance enabled
+ chip->qwr.csiv = 1; /* Chip selects are active low */
+ chip->qmr.master = 1; /* Must set to master mode */
+ chip->qmr.dohie = 1; /* Data output high impediance enabled */
chip->void_write_data = chip_info->void_write_data;
chip->qdlyr.qcd = chip_info->del_cs_to_clk;
@@ -1075,8 +1076,8 @@ static int setup(struct spi_device *spi)
chip->qmr.baud = baud_divisor;
- //printk( "QSPI: spi->max_speed_hz %d\n", spi->max_speed_hz );
- //printk( "QSPI: Baud set to %d\n", chip->qmr.baud );
+ /*printk( "SPI: spi->max_speed_hz %d\n", spi->max_speed_hz );*/
+ /*printk( "SPI: Baud set to %d\n", chip->qmr.baud );*/
if (spi->mode & SPI_CPHA)
chip->qmr.cpha = 1;
@@ -1089,7 +1090,7 @@ static int setup(struct spi_device *spi)
} else if ((spi->bits_per_word >= 8) && (spi->bits_per_word <= 15)) {
chip->qmr.bits = spi->bits_per_word;
} else {
- printk(KERN_ERR "coldfire-qspi: invalid wordsize\n");
+ printk(KERN_ERR "coldfire-spi: invalid wordsize\n");
kfree(chip);
return -ENODEV;
}
@@ -1112,7 +1113,7 @@ static int init_queue(struct driver_data
tasklet_init(&drv_data->pump_transfers,
pump_transfers, (unsigned long)drv_data);
- INIT_WORK(&drv_data->pump_messages, pump_messages/*, drv_data*/);
+ INIT_WORK(&drv_data->pump_messages, pump_messages);
drv_data->workqueue = create_singlethread_workqueue(
drv_data->master->dev.parent->bus_id);
@@ -1185,7 +1186,7 @@ static int destroy_queue(struct driver_d
}
-static void cleanup(const struct spi_device *spi)
+static void cleanup(struct spi_device *spi)
{
struct chip_data *chip = spi_get_ctldata((struct spi_device *)spi);
@@ -1213,11 +1214,7 @@ static int coldfire_spi_probe(struct pla
int status = 0;
int i;
-#if defined(SPI_DSPI_EDMA)
- init_edma();
-#endif
-
- platform_info = (struct coldfire_spi_master *)pdev->dev.platform_data;
+ platform_info = (struct coldfire_spi_master *)pdev->dev.platform_data;
master = spi_alloc_master(dev, sizeof(struct driver_data));
if (!master)
@@ -1241,7 +1238,7 @@ static int coldfire_spi_probe(struct pla
drv_data->cs_control(i, QSPI_CS_INIT | QSPI_CS_DROP);
/* Setup register addresses */
- memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi-module");
+ memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spi-module");
if (!memory_resource) {
dev_dbg(dev, "can not find platform module memory\n");
goto out_error_master_alloc;
@@ -1259,13 +1256,13 @@ static int coldfire_spi_probe(struct pla
dev_dbg(dev, "cannot allocate eDMA RX memory\n");
goto out_error_master_alloc;
}
-#endif
+#endif
#if defined(SPI_DSPI)
- drv_data->mcr = (void *)(memory_resource->start + 0x00000000);
- drv_data->ctar = (void *)(memory_resource->start + 0x0000000C);
- drv_data->dspi_sr = (void *)(memory_resource->start + 0x0000002C);
+ drv_data->mcr = (void *)(memory_resource->start + 0x00000000);
+ drv_data->ctar = (void *)(memory_resource->start + 0x0000000C);
+ drv_data->dspi_sr = (void *)(memory_resource->start + 0x0000002C);
drv_data->dspi_rser = (void *)(memory_resource->start + 0x00000030);
drv_data->dspi_dtfr = (void *)(memory_resource->start + 0x00000034);
drv_data->dspi_drfr = (void *)(memory_resource->start + 0x00000038);
@@ -1283,7 +1280,7 @@ static int coldfire_spi_probe(struct pla
#endif
/* Setup register addresses */
- memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi-par");
+ memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spi-par");
if (!memory_resource) {
dev_dbg(dev, "can not find platform par memory\n");
goto out_error_master_alloc;
@@ -1292,7 +1289,7 @@ static int coldfire_spi_probe(struct pla
drv_data->par = (void *)memory_resource->start;
/* Setup register addresses */
- memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi-int-level");
+ memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spi-int-level");
if (!memory_resource) {
dev_dbg(dev, "can not find platform par memory\n");
goto out_error_master_alloc;
@@ -1301,7 +1298,7 @@ static int coldfire_spi_probe(struct pla
drv_data->int_icr = (void *)memory_resource->start;
/* Setup register addresses */
- memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi-int-mask");
+ memory_resource = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spi-int-mask");
if (!memory_resource) {
dev_dbg(dev, "can not find platform par memory\n");
goto out_error_master_alloc;
@@ -1309,32 +1306,52 @@ static int coldfire_spi_probe(struct pla
drv_data->int_mr = (void *)memory_resource->start;
- irq = platform_info->irq_vector;
+ if (platform_info->irq_list) {
+ /* multiple IRQs */
+ int *irqlist = platform_info->irq_list;
+ while ((irq = *irqlist++)) {
+ int off = *irqlist++;
+ int lvl = *irqlist++;
+ int msk = *irqlist++;
+ status = request_irq(irq, qspi_interrupt, IRQF_DISABLED,
+ dev->bus_id, drv_data);
+ if (status < 0) {
+ dev_err(&pdev->dev,
+ "unable to attach ColdFire DSPI interrupt\n");
+ goto out_error_master_alloc;
+ }
+
+ if (lvl)
+ *(drv_data->int_icr + off) = lvl;
- status = request_irq(platform_info->irq_vector, qspi_interrupt, IRQF_DISABLED, dev->bus_id, drv_data);
- if (status < 0) {
- dev_err(&pdev->dev, "unable to attach ColdFire QSPI interrupt\n");
- goto out_error_master_alloc;
+ if (msk)
+ *drv_data->int_mr &= ~msk;
+ }
}
+ else {
+ irq = platform_info->irq_vector;
- /* Now that we have all the addresses etc. Let's set it up */
- // TODO:
- //*drv_data->par = platform_info->par_val;
+ status = request_irq(platform_info->irq_vector, qspi_interrupt,
+ IRQF_DISABLED, dev->bus_id, drv_data);
+ if (status < 0) {
+ dev_err(&pdev->dev, "unable to attach ColdFire QSPI interrupt\n");
+ goto out_error_master_alloc;
+ }
- MCF_GPIO_PAR_DSPI = 0
- | MCF_GPIO_PAR_DSPI_PCS5_PCS5
- | MCF_GPIO_PAR_DSPI_PCS2_PCS2
- | MCF_GPIO_PAR_DSPI_PCS1_PCS1
- | MCF_GPIO_PAR_DSPI_PCS0_PCS0
- | MCF_GPIO_PAR_DSPI_SIN_SIN
- | MCF_GPIO_PAR_DSPI_SOUT_SOUT
- | MCF_GPIO_PAR_DSPI_SCK_SCK;
+ *drv_data->int_icr = platform_info->irq_lp;
+ *drv_data->int_mr &= ~platform_info->irq_mask;
+ }
+
+ /* Now that we have all the addresses etc. Let's set it up */
+ if (platform_info->par_val)
+ *drv_data->par = platform_info->par_val;
- *drv_data->int_icr = platform_info->irq_lp;
- *drv_data->int_mr &= ~platform_info->irq_mask;
+#ifdef CONFIG_M5227x
+ MCF_GPIO_PAR_IRQ = 0x04; /* Mistake in RM documentation */
+#endif
#ifdef SPI_DSPI
- drv_data->dspi_ctas = 0; // TODO: change later
+ drv_data->dspi_ctas = 0; /* TBD: change later */
#endif
/* Initial and start queue */
@@ -1359,40 +1376,37 @@ static int coldfire_spi_probe(struct pla
}
#if defined(SPI_DSPI_EDMA)
- if (request_edma_channel(DSPI_DMA_TX_TCD,
- edma_tx_handler,
- NULL,
- pdev,
- NULL, /* spinlock */
- DRIVER_NAME
- )!=0)
- {
+ if (mcf_edma_request_channel(DSPI_DMA_TX_TCD,
+ edma_tx_handler,
+ NULL,
+ pdev,
+ NULL, /* spinlock */
+ DRIVER_NAME
+ )!=0) {
dev_err(&pdev->dev, "problem requesting edma transmit channel\n");
status = -EINVAL;
- goto out_error_queue_alloc;
+ goto out_error_queue_alloc;
}
- if (request_edma_channel(DSPI_DMA_RX_TCD,
- edma_rx_handler,
- NULL,
- pdev,
- NULL, /* spinlock */
- DRIVER_NAME
- )!=0)
- {
+ if (mcf_edma_request_channel(DSPI_DMA_RX_TCD,
+ edma_rx_handler,
+ NULL,
+ pdev,
+ NULL, /* spinlock */
+ DRIVER_NAME
+ )!=0) {
dev_err(&pdev->dev, "problem requesting edma receive channel\n");
status = -EINVAL;
- goto out_edma_transmit;
+ goto out_edma_transmit;
}
#endif
- printk( "SPI: Coldfire master initialized\n" );
- //dev_info(&pdev->dev, "driver initialized\n");
+ printk(KERN_INFO "SPI: Coldfire master initialized\n" );
return status;
#if defined(SPI_DSPI_EDMA)
out_edma_transmit:
- free_edma_channel(DSPI_DMA_TX_TCD, pdev);
+ mcf_edma_free_channel(DSPI_DMA_TX_TCD, pdev);
#endif
out_error_queue_alloc:
@@ -1417,8 +1431,8 @@ static int coldfire_spi_remove(struct pl
return 0;
#if defined(SPI_DSPI_EDMA)
- free_edma_channel(DSPI_DMA_TX_TCD, pdev);
- free_edma_channel(DSPI_DMA_RX_TCD, pdev);
+ mcf_edma_free_channel(DSPI_DMA_TX_TCD, pdev);
+ mcf_edma_free_channel(DSPI_DMA_RX_TCD, pdev);
#endif
/* Remove the queue */
@@ -1426,27 +1440,8 @@ static int coldfire_spi_remove(struct pl
if (status != 0)
return status;
- /* Disable the SSP at the peripheral and SOC level */
- /*write_SSCR0(0, drv_data->ioaddr);
- pxa_set_cken(drv_data->master_info->clock_enable, 0);*/
-
- /* Release DMA */
- /*if (drv_data->master_info->enable_dma) {
- if (drv_data->ioaddr == SSP1_VIRT) {
- DRCMRRXSSDR = 0;
- DRCMRTXSSDR = 0;
- } else if (drv_data->ioaddr == SSP2_VIRT) {
- DRCMRRXSS2DR = 0;
- DRCMRTXSS2DR = 0;
- } else if (drv_data->ioaddr == SSP3_VIRT) {
- DRCMRRXSS3DR = 0;
- DRCMRTXSS3DR = 0;
- }
- pxa_free_dma(drv_data->tx_channel);
- pxa_free_dma(drv_data->rx_channel);
- }*/
-
/* Release IRQ */
+/* JKM -- check for list and remove list */
irq = platform_get_irq(pdev, 0);
if (irq >= 0)
free_irq(irq, drv_data);
@@ -1496,8 +1491,6 @@ static int coldfire_spi_suspend(struct p
status = stop_queue(drv_data);
if (status != 0)
return status;
- /*write_SSCR0(0, drv_data->ioaddr);
- pxa_set_cken(drv_data->master_info->clock_enable, 0);*/
return 0;
}
@@ -1507,9 +1500,6 @@ static int coldfire_spi_resume(struct pl
struct driver_data *drv_data = platform_get_drvdata(pdev);
int status = 0;
- /* Enable the SSP clock */
- /*pxa_set_cken(drv_data->master_info->clock_enable, 1);*/
-
/* Start the queue running */
status = start_queue(drv_data);
if (status != 0) {
--- /dev/null
+++ b/include/asm-m68k/m5485dspi.h
@@ -0,0 +1,144 @@
+/*
+ * File: mcf548x_dspi.h
+ * Purpose: Register and bit definitions for the MCF548X
+ *
+ * Notes:
+ *
+ */
+
+#ifndef _M5485DSPI_H_
+#define _M5485DSPI_H_
+
+/*
+ *
+ * DMA Serial Peripheral Interface (DSPI)
+ *
+ */
+
+/* Register read/write macros */
+#define MCF_DSPI_DMCR MCF_REG32(0x008A00)
+#define MCF_DSPI_DTCR MCF_REG32(0x008A08)
+#define MCF_DSPI_DCTAR0 MCF_REG32(0x008A0C)
+#define MCF_DSPI_DCTAR1 MCF_REG32(0x008A10)
+#define MCF_DSPI_DCTAR2 MCF_REG32(0x008A14)
+#define MCF_DSPI_DCTAR3 MCF_REG32(0x008A18)
+#define MCF_DSPI_DCTAR4 MCF_REG32(0x008A1C)
+#define MCF_DSPI_DCTAR5 MCF_REG32(0x008A20)
+#define MCF_DSPI_DCTAR6 MCF_REG32(0x008A24)
+#define MCF_DSPI_DCTAR7 MCF_REG32(0x008A28)
+#define MCF_DSPI_DCTARn(x) MCF_REG32(0x008A0C+(x*4))
+#define MCF_DSPI_DSR MCF_REG32(0x008A2C)
+#define MCF_DSPI_DRSER MCF_REG32(0x008A30)
+#define MCF_DSPI_DTFR MCF_REG32(0x008A34)
+#define MCF_DSPI_DRFR MCF_REG32(0x008A38)
+#define MCF_DSPI_DTFDR0 MCF_REG32(0x008A3C)
+#define MCF_DSPI_DTFDR1 MCF_REG32(0x008A40)
+#define MCF_DSPI_DTFDR2 MCF_REG32(0x008A44)
+#define MCF_DSPI_DTFDR3 MCF_REG32(0x008A48)
+#define MCF_DSPI_DTFDRn(x) MCF_REG32(0x008A3C+(x*4))
+#define MCF_DSPI_DRFDR0 MCF_REG32(0x008A7C)
+#define MCF_DSPI_DRFDR1 MCF_REG32(0x008A80)
+#define MCF_DSPI_DRFDR2 MCF_REG32(0x008A84)
+#define MCF_DSPI_DRFDR3 MCF_REG32(0x008A88)
+#define MCF_DSPI_DRFDRn(x) MCF_REG32(0x008A7C+(x*4))
+
+/* Bit definitions and macros for MCF_DSPI_DMCR */
+#define MCF_DSPI_DMCR_HALT (0x00000001)
+#define MCF_DSPI_DMCR_SMPL_PT(x) (((x)&0x00000003)<<8)
+#define MCF_DSPI_DMCR_CRXF (0x00000400)
+#define MCF_DSPI_DMCR_CTXF (0x00000800)
+#define MCF_DSPI_DMCR_DRXF (0x00001000)
+#define MCF_DSPI_DMCR_DTXF (0x00002000)
+#define MCF_DSPI_DMCR_CSIS0 (0x00010000)
+#define MCF_DSPI_DMCR_CSIS2 (0x00040000)
+#define MCF_DSPI_DMCR_CSIS3 (0x00080000)
+#define MCF_DSPI_DMCR_CSIS5 (0x00200000)
+#define MCF_DSPI_DMCR_ROOE (0x01000000)
+#define MCF_DSPI_DMCR_PCSSE (0x02000000)
+#define MCF_DSPI_DMCR_MTFE (0x04000000)
+#define MCF_DSPI_DMCR_FRZ (0x08000000)
+#define MCF_DSPI_DMCR_DCONF(x) (((x)&0x00000003)<<28)
+#define MCF_DSPI_DMCR_CSCK (0x40000000)
+#define MCF_DSPI_DMCR_MSTR (0x80000000)
+
+/* Bit definitions and macros for MCF_DSPI_DTCR */
+#define MCF_DSPI_DTCR_SPI_TCNT(x) (((x)&0x0000FFFF)<<16)
+
+/* Bit definitions and macros for MCF_DSPI_DCTARn */
+#define MCF_DSPI_DCTAR_BR(x) (((x)&0x0000000F)<<0)
+#define MCF_DSPI_DCTAR_DT(x) (((x)&0x0000000F)<<4)
+#define MCF_DSPI_DCTAR_ASC(x) (((x)&0x0000000F)<<8)
+#define MCF_DSPI_DCTAR_CSSCK(x) (((x)&0x0000000F)<<12)
+#define MCF_DSPI_DCTAR_PBR(x) (((x)&0x00000003)<<16)
+#define MCF_DSPI_DCTAR_PDT(x) (((x)&0x00000003)<<18)
+#define MCF_DSPI_DCTAR_PASC(x) (((x)&0x00000003)<<20)
+#define MCF_DSPI_DCTAR_PCSSCK(x) (((x)&0x00000003)<<22)
+#define MCF_DSPI_DCTAR_LSBFE (0x01000000)
+#define MCF_DSPI_DCTAR_CPHA (0x02000000)
+#define MCF_DSPI_DCTAR_CPOL (0x04000000)
+/* #define MCF_DSPI_DCTAR_TRSZ(x) (((x)&0x0000000F)<<27) */
+#define MCF_DSPI_DCTAR_FMSZ(x) (((x)&0x0000000F)<<27)
+#define MCF_DSPI_DCTAR_PCSSCK_1CLK (0x00000000)
+#define MCF_DSPI_DCTAR_PCSSCK_3CLK (0x00400000)
+#define MCF_DSPI_DCTAR_PCSSCK_5CLK (0x00800000)
+#define MCF_DSPI_DCTAR_PCSSCK_7CLK (0x00A00000)
+#define MCF_DSPI_DCTAR_PASC_1CLK (0x00000000)
+#define MCF_DSPI_DCTAR_PASC_3CLK (0x00100000)
+#define MCF_DSPI_DCTAR_PASC_5CLK (0x00200000)
+#define MCF_DSPI_DCTAR_PASC_7CLK (0x00300000)
+#define MCF_DSPI_DCTAR_PDT_1CLK (0x00000000)
+#define MCF_DSPI_DCTAR_PDT_3CLK (0x00040000)
+#define MCF_DSPI_DCTAR_PDT_5CLK (0x00080000)
+#define MCF_DSPI_DCTAR_PDT_7CLK (0x000A0000)
+#define MCF_DSPI_DCTAR_PBR_1CLK (0x00000000)
+#define MCF_DSPI_DCTAR_PBR_3CLK (0x00010000)
+#define MCF_DSPI_DCTAR_PBR_5CLK (0x00020000)
+#define MCF_DSPI_DCTAR_PBR_7CLK (0x00030000)
+
+/* Bit definitions and macros for MCF_DSPI_DSR */
+#define MCF_DSPI_DSR_RXPTR(x) (((x)&0x0000000F)<<0)
+#define MCF_DSPI_DSR_RXCTR(x) (((x)&0x0000000F)<<4)
+#define MCF_DSPI_DSR_TXPTR(x) (((x)&0x0000000F)<<8)
+#define MCF_DSPI_DSR_TXCTR(x) (((x)&0x0000000F)<<12)
+#define MCF_DSPI_DSR_RFDF (0x00020000)
+#define MCF_DSPI_DSR_RFOF (0x00080000)
+#define MCF_DSPI_DSR_TFFF (0x02000000)
+#define MCF_DSPI_DSR_TFUF (0x08000000)
+#define MCF_DSPI_DSR_EOQF (0x10000000)
+#define MCF_DSPI_DSR_TXRXS (0x40000000)
+#define MCF_DSPI_DSR_TCF (0x80000000)
+
+/* Bit definitions and macros for MCF_DSPI_DRSER */
+#define MCF_DSPI_DRSER_RFDFS (0x00010000)
+#define MCF_DSPI_DRSER_RFDFE (0x00020000)
+#define MCF_DSPI_DRSER_RFOFE (0x00080000)
+#define MCF_DSPI_DRSER_TFFFS (0x01000000)
+#define MCF_DSPI_DRSER_TFFFE (0x02000000)
+#define MCF_DSPI_DRSER_TFUFE (0x08000000)
+#define MCF_DSPI_DRSER_EOQFE (0x10000000)
+#define MCF_DSPI_DRSER_TCFE (0x80000000)
+
+/* Bit definitions and macros for MCF_DSPI_DTFR */
+#define MCF_DSPI_DTFR_TXDATA(x) (((x)&0x0000FFFF)<<0)
+#define MCF_DSPI_DTFR_CS0 (0x00010000)
+#define MCF_DSPI_DTFR_CS2 (0x00040000)
+#define MCF_DSPI_DTFR_CS3 (0x00080000)
+#define MCF_DSPI_DTFR_CS5 (0x00200000)
+#define MCF_DSPI_DTFR_CTCNT (0x04000000)
+#define MCF_DSPI_DTFR_EOQ (0x08000000)
+#define MCF_DSPI_DTFR_CTAS(x) (((x)&0x00000007)<<28)
+#define MCF_DSPI_DTFR_CONT (0x80000000)
+
+/* Bit definitions and macros for MCF_DSPI_DRFR */
+#define MCF_DSPI_DRFR_RXDATA(x) (((x)&0x0000FFFF)<<0)
+
+/* Bit definitions and macros for MCF_DSPI_DTFDRn */
+#define MCF_DSPI_DTFDRn_TXDATA(x) (((x)&0x0000FFFF)<<0)
+#define MCF_DSPI_DTFDRn_TXCMD(x) (((x)&0x0000FFFF)<<16)
+
+/* Bit definitions and macros for MCF_DSPI_DRFDRn */
+#define MCF_DSPI_DRFDRn_RXDATA(x) (((x)&0x0000FFFF)<<0)
+
+/********************************************************************/
+
+#endif /* _M5485DSPI_H_ */
--- a/include/asm-m68k/mcfqspi.h
+++ b/include/asm-m68k/mcfqspi.h
@@ -36,6 +36,7 @@ struct coldfire_spi_master {
u32 irq_mask;
u8 irq_lp;
u8 par_val;
+ u32 *irq_list;
void (*cs_control)(u8 cs, u8 command);
};
--- a/include/asm-m68k/mcfsim.h
+++ b/include/asm-m68k/mcfsim.h
@@ -25,6 +25,7 @@
#include <asm/mcf5445x_dtim.h>
#elif defined(CONFIG_M547X_8X)
#include <asm/m5485sim.h>
+#include <asm/m5485gpio.h>
#endif
/*
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