Supports the MMC/SD controller on Au1300 and the single slot on the DB1300
board.
Signed-off-by: Kevin Hickey <khickey@xxxxxxxxxxx>
---
arch/mips/alchemy/devboards/db1300/mmc.c | 154 ++++++++++++++++++++++++++++++
drivers/mmc/host/Kconfig | 2 +-
drivers/mmc/host/au1xmmc.c | 18 ++--
3 files changed, 164 insertions(+), 10 deletions(-)
create mode 100644 arch/mips/alchemy/devboards/db1300/mmc.c
diff --git a/arch/mips/alchemy/devboards/db1300/mmc.c b/arch/mips/alchemy/devboards/db1300/mmc.c
new file mode 100644
index 0000000..821658c
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1300/mmc.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2003-2008 RMI Corporation. All rights reserved.
+ * Author: Kevin Hickey <khickey@xxxxxxxxxxx>
+ *
+ * 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 SOFTWARE IS PROVIDED BY RMI Corporation 'AS IS' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL RMI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.
+ */
+
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <asm/mips-boards/db1300.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <linux/dma-mapping.h>
+
+static volatile struct bcsr_regs *const bcsr =
+ (struct bcsr_regs *)(DB1300_BCSR_REGS_PHYS_ADDR + KSEG1_OFFSET);
+
+static int mmc_activity;
+static u64 au1xxx_mmc_dmamask = DMA_32BIT_MASK;
+
+
+static void db1300_mmcled_set(struct led_classdev *led,
+ enum led_brightness brightness)
+{
+ if (brightness != LED_OFF) {
+ if (++mmc_activity == 1)
+ bcsr->disk_leds &= ~(1 << 8);
+ } else {
+ if (--mmc_activity == 0)
+ bcsr->disk_leds |= (1 << 8);
+ }
+}
+
+static struct led_classdev db1300mmc_led = {
+ .brightness_set = db1300_mmcled_set,
+};
+
+
+static int db1300mmc1_card_readonly(void *mmc_host)
+{
+ return (bcsr->status & BCSR_STATUS_SD1_WP) ? 1 : 0;
+}
+
+static int db1300mmc1_card_inserted(void *mmc_host)
+{
+ int retval;
+ retval = (bcsr->sig_status & BCSR_INT_SD1_INSERT) ? 1 : 0;
+ return retval;
+}
+
+struct au1xmmc_platform_data au1xmmc_platdata[2] = {
+ [0] = {
+ .set_power = NULL,
+ .card_inserted = NULL,
+ .card_readonly = NULL,
+ .cd_setup = NULL, /* use poll-timer in driver */
+ .led = &db1300mmc_led,
+ },
+ [1] = {
+ .set_power = NULL,
+ .card_inserted = db1300mmc1_card_inserted,
+ .card_readonly = db1300mmc1_card_readonly,
+ .cd_setup = NULL, /* use poll-timer in driver */
+ .led = &db1300mmc_led,
+ },
+};
+
+static struct resource au13xx_mmc0_resources[] = {
+ [0] = {
+ .start = SD0_PHYS_ADDR,
+ .end = SD0_PHYS_ADDR + 0x7ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AU1300_IRQ_SD0 + GPINT_LINUX_IRQ_OFFSET,
+ .end = AU1300_IRQ_SD0 + GPINT_LINUX_IRQ_OFFSET,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = DSCR_CMD0_SDMS_TX0,
+ .end = DSCR_CMD0_SDMS_TX0,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .start = DSCR_CMD0_SDMS_RX0,
+ .end = DSCR_CMD0_SDMS_RX0,
+ .flags = IORESOURCE_DMA,
+ }
+};
+
+struct platform_device au13xx_mmc0_device = {
+ .name = "au1xxx-mmc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &au1xxx_mmc_dmamask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .platform_data = &au1xmmc_platdata[0],
+ },
+ .num_resources = ARRAY_SIZE(au13xx_mmc0_resources),
+ .resource = au13xx_mmc0_resources,
+};
+
+static struct resource au13xx_mmc1_resources[] = {
+ [0] = {
+ .start = SD1_PHYS_ADDR,
+ .end = SD1_PHYS_ADDR + 0x7ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AU1300_IRQ_SD1 + GPINT_LINUX_IRQ_OFFSET,
+ .end = AU1300_IRQ_SD1 + GPINT_LINUX_IRQ_OFFSET,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = DSCR_CMD0_SDMS_TX1,
+ .end = DSCR_CMD0_SDMS_TX1,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .start = DSCR_CMD0_SDMS_RX1,
+ .end = DSCR_CMD0_SDMS_RX1,
+ .flags = IORESOURCE_DMA,
+ }
+};
+
+struct platform_device au13xx_mmc1_device = {
+ .name = "au1xxx-mmc",
+ .id = 1,
+ .dev = {
+ .dma_mask = &au1xxx_mmc_dmamask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .platform_data = &au1xmmc_platdata[1],
+ },
+ .num_resources = ARRAY_SIZE(au13xx_mmc1_resources),
+ .resource = au13xx_mmc1_resources,
+};
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 99d4b28..a37bfee 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -99,7 +99,7 @@ config MMC_WBSD
config MMC_AU1X
tristate "Alchemy AU1XX0 MMC Card Interface support"
- depends on SOC_AU1200
+ depends on (SOC_AU1200 || SOC_AU13XX)
help
This selects the AMD Alchemy(R) Multimedia card interface.
If you have a Alchemy platform with a MMC slot, say Y or M here.
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index d3f5561..a3b8ac7 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -353,7 +353,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
if (!data->error) {
if (host->flags & HOST_F_DMA) {
-#ifdef CONFIG_SOC_AU1200 /* DBDMA */
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX) /* DBDMA */
u32 chan = DMA_CHANNEL(host);
chan_tab_t *c = *((chan_tab_t **)chan);
@@ -570,7 +570,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
host->status = HOST_S_DATA;
if (host->flags & HOST_F_DMA) {
-#ifdef CONFIG_SOC_AU1200 /* DBDMA */
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX) /* DBDMA */
u32 channel = DMA_CHANNEL(host);
/* Start the DMA as soon as the buffer gets something in it */
@@ -633,7 +633,7 @@ static int au1xmmc_prepare_data(struct au1xmmc_host *host,
au_writel(data->blksz - 1, HOST_BLKSIZE(host));
if (host->flags & HOST_F_DMA) {
-#ifdef CONFIG_SOC_AU1200 /* DBDMA */
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX) /* DBDMA */
int i;
u32 channel = DMA_CHANNEL(host);
@@ -837,7 +837,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
/* 8bit memory DMA device */
static dbdev_tab_t au1xmmc_mem_dbdev = {
.dev_id = DSCR_CMD0_ALWAYS,
@@ -1023,7 +1023,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
tasklet_init(&host->finish_task, au1xmmc_tasklet_finish,
(unsigned long)host);
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
ret = au1xmmc_dbdma_init(host);
if (ret)
printk(KERN_INFO DRIVER_NAME ": DBDMA init failed; using PIO\n");
@@ -1068,7 +1068,7 @@ out5:
au_writel(0, HOST_CONFIG2(host));
au_sync();
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
au1xmmc_dbdma_shutdown(host);
#endif
@@ -1115,7 +1115,7 @@ static int __devexit au1xmmc_remove(struct platform_device *pdev)
tasklet_kill(&host->data_task);
tasklet_kill(&host->finish_task);
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
au1xmmc_dbdma_shutdown(host);
#endif
au1xmmc_set_power(host, 0);
@@ -1176,7 +1176,7 @@ static struct platform_driver au1xmmc_driver = {
static int __init au1xmmc_init(void)
{
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
/* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride
* of 8 bits. And since devices are shared, we need to create
* our own to avoid freaking out other devices.
@@ -1190,7 +1190,7 @@ static int __init au1xmmc_init(void)
static void __exit au1xmmc_exit(void)
{
-#ifdef CONFIG_SOC_AU1200
+#if defined(CONFIG_SOC_AU1200) || defined(CONFIG_SOC_AU13XX)
if (memid)
au1xxx_ddma_del_device(memid);
#endif
--
1.5.4.3
