From 20787e23b8501f11c83599d1a2e38bb1204ac961 Mon Sep 17 00:00:00 2001
From: wdenk
Date: Wed, 6 Apr 2005 00:04:16 +0000
Subject: * Patches by Robert Whaley, 29 Nov 2004:   - update the pxa-regs.h
 file for PXA27x chips   - add PXA27x based ADSVIX board   - add support for
 MMC on PXA27x processors

* Patch by Andrew E. Mileski, 28 Nov 2004:
  Fix PPC4xx SPD SDRAM detection bug

* Patch by Hiroshi Ito, 26 Nov 2004:
  Fix logic of "test -z" and "test -n" commands
---
 cpu/pxa/mmc.c | 141 ++++++++++++++++++++++++++--------------------------------
 1 file changed, 62 insertions(+), 79 deletions(-)

(limited to 'cpu/pxa')

diff --git a/cpu/pxa/mmc.c b/cpu/pxa/mmc.c
index 4495962976b..f7020eec951 100644
--- a/cpu/pxa/mmc.c
+++ b/cpu/pxa/mmc.c
@@ -72,13 +72,11 @@ mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
 
 	status = MMC_STAT;
 	debug("MMC status %x\n", status);
-	if (status & MMC_STAT_TIME_OUT_RESPONSE)
-	{
+	if (status & MMC_STAT_TIME_OUT_RESPONSE) {
 		return 0;
 	}
 
-	switch (cmdat & 0x3)
-	{
+	switch (cmdat & 0x3) {
 		case MMC_CMDAT_R1:
 		case MMC_CMDAT_R3:
 			words = 3;
@@ -91,8 +89,7 @@ mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
 		default:
 			return 0;
 	}
-	for (i = words-1; i >= 0; i--)
-	{
+	for (i = words-1; i >= 0; i--) {
 		ulong res_fifo = MMC_RES;
 		int offset = i << 1;
 
@@ -100,8 +97,7 @@ mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
 		resp[offset+1] = ((uchar *)&res_fifo)[1];
 	}
 #ifdef MMC_DEBUG
-	for (i=0; i<words*2; i += 2)
-	{
+	for (i=0; i<words*2; i += 2) {
 		printf("MMC resp[%d] = %02x\n", i, resp[i]);
 		printf("MMC resp[%d] = %02x\n", i+1, resp[i+1]);
 	}
@@ -118,8 +114,7 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
 	ushort argh, argl;
 	ulong status;
 
-	if (len == 0)
-	{
+	if (len == 0) {
 		return 0;
 	}
 
@@ -143,16 +138,21 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
 
 
 	MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ;
-	while (len)
-	{
-		if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ)
-		{
+	while (len) {
+		if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ) {
+#ifdef CONFIG_PXA27X
+			int i;
+			for (i=min(len,32); i; i--) {
+				*dst++ = * ((volatile uchar *) &MMC_RXFIFO);
+				len--;
+			}
+#else
 			*dst++ = MMC_RXFIFO;
 			len--;
+#endif
 		}
 		status = MMC_STAT;
-		if (status & MMC_STAT_ERRORS)
-		{
+		if (status & MMC_STAT_ERRORS) {
 			printf("MMC_STAT error %lx\n", status);
 			return -1;
 		}
@@ -160,8 +160,7 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
 	MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE;
 	while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE));
 	status = MMC_STAT;
-	if (status & MMC_STAT_ERRORS)
-	{
+	if (status & MMC_STAT_ERRORS) {
 		printf("MMC_STAT error %lx\n", status);
 		return -1;
 	}
@@ -177,8 +176,7 @@ mmc_block_write(ulong dst, uchar *src, int len)
 	ushort argh, argl;
 	ulong status;
 
-	if (len == 0)
-	{
+	if (len == 0) {
 		return 0;
 	}
 
@@ -200,25 +198,20 @@ mmc_block_write(ulong dst, uchar *src, int len)
 			MMC_CMDAT_R1|MMC_CMDAT_WRITE|MMC_CMDAT_BLOCK|MMC_CMDAT_DATA_EN);
 
 	MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ;
-	while (len)
-	{
-		if (MMC_I_REG & MMC_I_REG_TXFIFO_WR_REQ)
-		{
+	while (len) {
+		if (MMC_I_REG & MMC_I_REG_TXFIFO_WR_REQ) {
 			int i, bytes = min(32,len);
 
-			for (i=0; i<bytes; i++)
-			{
+			for (i=0; i<bytes; i++) {
 				MMC_TXFIFO = *src++;
 			}
-			if (bytes < 32)
-			{
+			if (bytes < 32) {
 				MMC_PRTBUF = MMC_PRTBUF_BUF_PART_FULL;
 			}
 			len -= bytes;
 		}
 		status = MMC_STAT;
-		if (status & MMC_STAT_ERRORS)
-		{
+		if (status & MMC_STAT_ERRORS) {
 			printf("MMC_STAT error %lx\n", status);
 			return -1;
 		}
@@ -228,8 +221,7 @@ mmc_block_write(ulong dst, uchar *src, int len)
 	MMC_I_MASK = ~MMC_I_MASK_PRG_DONE;
 	while (!(MMC_I_REG & MMC_I_REG_PRG_DONE));
 	status = MMC_STAT;
-	if (status & MMC_STAT_ERRORS)
-	{
+	if (status & MMC_STAT_ERRORS) {
 		printf("MMC_STAT error %lx\n", status);
 		return -1;
 	}
@@ -245,13 +237,11 @@ mmc_read(ulong src, uchar *dst, int size)
 	ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
 	ulong mmc_block_size, mmc_block_address;
 
-	if (size == 0)
-	{
+	if (size == 0) {
 		return 0;
 	}
 
-	if (!mmc_ready)
-	{
+	if (!mmc_ready) {
 		printf("Please initial the MMC first\n");
 		return -1;
 	}
@@ -269,13 +259,11 @@ mmc_read(ulong src, uchar *dst, int size)
 	/* all block aligned accesses */
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	if (part_start)
-	{
+	if (part_start) {
 		part_len = mmc_block_size - part_start;
 		debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) {
 			return -1;
 		}
 		memcpy(dst, mmc_buf+part_start, part_len);
@@ -284,23 +272,19 @@ mmc_read(ulong src, uchar *dst, int size)
 	}
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size)
-	{
+	for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) {
 		debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_read((uchar *)(dst), src, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_read((uchar *)(dst), src, mmc_block_size)) < 0) {
 			return -1;
 		}
 	}
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	if (part_end && src < end)
-	{
+	if (part_end && src < end) {
 		debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) {
 			return -1;
 		}
 		memcpy(dst, mmc_buf, part_end);
@@ -316,13 +300,11 @@ mmc_write(uchar *src, ulong dst, int size)
 	ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
 	ulong mmc_block_size, mmc_block_address;
 
-	if (size == 0)
-	{
+	if (size == 0) {
 		return 0;
 	}
 
-	if (!mmc_ready)
-	{
+	if (!mmc_ready) {
 		printf("Please initial the MMC first\n");
 		return -1;
 	}
@@ -340,18 +322,15 @@ mmc_write(uchar *src, ulong dst, int size)
 	/* all block aligned accesses */
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	if (part_start)
-	{
+	if (part_start) {
 		part_len = mmc_block_size - part_start;
 		debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		(ulong)src, dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) {
 			return -1;
 		}
 		memcpy(mmc_buf+part_start, src, part_len);
-		if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < 0) {
 			return -1;
 		}
 		dst += part_len;
@@ -359,28 +338,23 @@ mmc_write(uchar *src, ulong dst, int size)
 	}
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size)
-	{
+	for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) {
 		debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_write(dst, (uchar *)src, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_write(dst, (uchar *)src, mmc_block_size)) < 0) {
 			return -1;
 		}
 	}
 	debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 	src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-	if (part_end && dst < end)
-	{
+	if (part_end && dst < end) {
 		debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
 		src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end);
-		if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) {
 			return -1;
 		}
 		memcpy(mmc_buf, src, part_end);
-		if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0)
-		{
+		if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0) {
 			return -1;
 		}
 	}
@@ -412,6 +386,11 @@ mmc_init(int verbose)
 	set_GPIO_mode( GPIO8_MMCCS0_MD );
 #endif
 	CKEN |= CKEN12_MMC; /* enable MMC unit clock */
+#if defined(CONFIG_ADSVIX)
+	/* turn on the power */
+	GPCR(114) = GPIO_bit(114);
+	udelay(1000);
+#endif
 
 	mmc_csd.c_size = 0;
 
@@ -423,21 +402,22 @@ mmc_init(int verbose)
 	retries = 10;
 	resp = mmc_cmd(0, 0, 0, 0);
 	resp = mmc_cmd(1, 0x00ff, 0xc000, MMC_CMDAT_INIT|MMC_CMDAT_BUSY|MMC_CMDAT_R3);
-	while (retries-- && resp && !(resp[4] & 0x80))
-	{
+	while (retries-- && resp && !(resp[4] & 0x80)) {
 		debug("resp %x %x\n", resp[0], resp[1]);
+#ifdef CONFIG_PXA27X
+		udelay(10000);
+#else
 		udelay(50);
+#endif
 		resp = mmc_cmd(1, 0x00ff, 0xff00, MMC_CMDAT_BUSY|MMC_CMDAT_R3);
 	}
 
 	/* try to get card id */
 	resp = mmc_cmd(2, 0, 0, MMC_CMDAT_R2);
-	if (resp)
-	{
+	if (resp) {
 		/* TODO configure mmc driver depending on card attributes */
 		mmc_cid_t *cid = (mmc_cid_t *)resp;
-		if (verbose)
-		{
+		if (verbose) {
 			printf("MMC found. Card desciption is:\n");
 			printf("Manufacturer ID = %02x%02x%02x\n",
 							cid->id[0], cid->id[1], cid->id[2]);
@@ -451,6 +431,7 @@ mmc_init(int verbose)
 		}
 		/* fill in device description */
 		mmc_dev.if_type = IF_TYPE_MMC;
+		mmc_dev.part_type = PART_TYPE_DOS;
 		mmc_dev.dev = 0;
 		mmc_dev.lun = 0;
 		mmc_dev.type = 0;
@@ -468,8 +449,7 @@ mmc_init(int verbose)
 		/* MMC exists, get CSD too */
 		resp = mmc_cmd(MMC_CMD_SET_RCA, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1);
 		resp = mmc_cmd(MMC_CMD_SEND_CSD, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R2);
-		if (resp)
-		{
+		if (resp) {
 			mmc_csd_t *csd = (mmc_csd_t *)resp;
 			memcpy(&mmc_csd, csd, sizeof(csd));
 			rc = 0;
@@ -478,7 +458,11 @@ mmc_init(int verbose)
 		}
 	}
 
+#ifdef CONFIG_PXA27X
+	MMC_CLKRT = 1;	/* 10 MHz - see Intel errata */
+#else
 	MMC_CLKRT = 0;	/* 20 MHz */
+#endif
 	resp = mmc_cmd(7, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1);
 
 	fat_register_device(&mmc_dev,1); /* partitions start counting with 1 */
@@ -496,11 +480,10 @@ int
 mmc2info(ulong addr)
 {
 	/* FIXME hard codes to 32 MB device */
-	if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000)
-	{
+	if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000) {
 		return 1;
 	}
 	return 0;
 }
 
-#endif
+#endif	/* CONFIG_MMC */
-- 
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