From 8b48f7c32cacb1fb8b49c8c003412edc628271f6 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Tue, 5 Mar 2013 15:37:50 +0000
Subject: [PATCH] Updates to the LPC1788 SDIO support

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5709 42af7a65-404d-4744-a932-0658087f49c3
---
 configs/open1788/include/board.h | 37 ++++++++++++++++++++++++++++++++
 configs/open1788/nsh/defconfig   | 13 +++++++++--
 2 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/configs/open1788/include/board.h b/configs/open1788/include/board.h
index 7a6fd0e078..5ed6b1a453 100644
--- a/configs/open1788/include/board.h
+++ b/configs/open1788/include/board.h
@@ -142,6 +142,36 @@
 
 #define ETH_MCFG_CLKSEL_DIV        ETH_MCFG_CLKSEL_DIV20
 
+/* SDIO dividers.  Note that slower clocking is required when DMA is disabled 
+ * in order to avoid RX overrun/TX underrun errors due to delayed responses
+ * to service FIFOs in interrupt driven mode.  These values have not been
+ * tuned!!!
+ *
+ * SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(118+2)=400 KHz
+ */
+  
+#define SDCARD_INIT_CLKDIV         (118 << SDCARD_CLOCK_CLKDIV_SHIFT)
+
+/* DMA ON:  SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz
+ * DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz
+ */
+
+#ifdef CONFIG_SDIO_DMA
+#  define SDCARD_MMCXFR_CLKDIV     (1 << SDCARD_CLOCK_CLKDIV_SHIFT) 
+#else
+#  define SDCARD_MMCXFR_CLKDIV     (2 << SDCARD_CLOCK_CLKDIV_SHIFT) 
+#endif
+
+/* DMA ON:  SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz
+ * DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz
+ */
+
+#ifdef CONFIG_SDIO_DMA
+#  define SDCARD_SDXFR_CLKDIV      (1 << SDCARD_CLOCK_CLKDIV_SHIFT)
+#else
+#  define SDCARD_SDXFR_CLKDIV      (2 << SDCARD_CLOCK_CLKDIV_SHIFT)
+#endif
+
 /* Set EMC delay values:
  *
  * CMDDLY: Programmable delay value for EMC outputs in command delayed
@@ -261,6 +291,13 @@
 #define GPIO_UART0_TXD             GPIO_UART0_TXD_2
 #define GPIO_UART0_RXD             GPIO_UART0_RXD_2
 
+#define GPIO_SD_DAT0               GPIO_SD_DAT0_1 /* REVISIT */
+#define GPIO_SD_DAT1               GPIO_SD_DAT1_1
+#define GPIO_SD_DAT2               GPIO_SD_DAT2_1
+#define GPIO_SD_DAT3               GPIO_SD_DAT3_1
+#define GPIO_SD_CLK                GPIO_SD_CLK_1
+#define GPIO_SD_CMD                GPIO_SD_CMD_1
+
 /************************************************************************************
  * Public Types
  ************************************************************************************/
diff --git a/configs/open1788/nsh/defconfig b/configs/open1788/nsh/defconfig
index c04baba607..b17b8386eb 100644
--- a/configs/open1788/nsh/defconfig
+++ b/configs/open1788/nsh/defconfig
@@ -118,6 +118,7 @@ CONFIG_ARMV7M_OABI_TOOLCHAIN=y
 # CONFIG_ARCH_CHIP_LPC1787 is not set
 CONFIG_ARCH_CHIP_LPC1788=y
 CONFIG_ARCH_FAMILY_LPC178X=y
+CONFIG_ARCH_HAVE_SDIO=y
 
 #
 # LPC17xx Peripheral Support
@@ -129,6 +130,7 @@ CONFIG_LPC17_PLL1=y
 # CONFIG_LPC17_ETHERNET is not set
 # CONFIG_LPC17_USBHOST is not set
 # CONFIG_LPC17_USBDEV is not set
+# CONFIG_LPC17_SDCARD is not set
 CONFIG_LPC17_UART0=y
 # CONFIG_LPC17_UART1 is not set
 # CONFIG_LPC17_UART2 is not set
@@ -154,7 +156,7 @@ CONFIG_LPC17_UART0=y
 # CONFIG_LPC17_WDT is not set
 # CONFIG_LPC17_ADC is not set
 # CONFIG_LPC17_DAC is not set
-# CONFIG_LPC17_GPDMA is not set
+CONFIG_LPC17_GPDMA=y
 # CONFIG_LPC17_FLASH is not set
 
 #
@@ -255,6 +257,7 @@ CONFIG_ARCH_HAVE_BUTTONS=y
 # CONFIG_ARCH_BUTTONS is not set
 CONFIG_ARCH_HAVE_IRQBUTTONS=y
 CONFIG_NSH_MMCSDMINOR=0
+CONFIG_NSH_MMCSDSLOTNO=0
 
 #
 # Board-Specific Options
@@ -342,7 +345,13 @@ CONFIG_LOOP=y
 CONFIG_BCH=y
 # CONFIG_INPUT is not set
 # CONFIG_LCD is not set
-# CONFIG_MMCSD is not set
+CONFIG_MMCSD=y
+CONFIG_MMCSD_NSLOTS=1
+# CONFIG_MMCSD_READONLY is not set
+# CONFIG_MMCSD_MULTIBLOCK_DISABLE is not set
+CONFIG_MMCSD_MMCSUPPORT=y
+CONFIG_MMCSD_HAVECARDDETECT=y
+# CONFIG_MMCSD_SDIO is not set
 # CONFIG_MTD is not set
 CONFIG_PIPES=y
 # CONFIG_PM is not set