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Message-ID: <20080609063835.GF8724@roarinelk.homelinux.net>
Date: Mon, 9 Jun 2008 08:38:35 +0200
From: Manuel Lauss <mano@...rinelk.homelinux.net>
To: linux-mips@...ux-mips.org, sshtylyov@...mvista.com,
drzeus@...eus.cx, linux-kernel@...r.kernel.org
Subject: [PATCH 5/8] au1xmmc: codingstyle tidying.
>From 629e26106e6fc0b653012e7229e3abd0bce554b2 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@...-ge.com>
Date: Sat, 17 May 2008 18:30:00 +0200
Subject: [PATCH] au1xmmc: codingstyle tidying
Clean up the codebase, no functional changes.
- merge the au1xmmc.h header contents into the driver file,
- indentation, spelling and style fixes.
Signed-off-by: Manuel Lauss <mano@...rinelk.homelinux.net>
---
drivers/mmc/host/au1xmmc.c | 233 ++++++++++++++++++++++++++-----------------
drivers/mmc/host/au1xmmc.h | 97 ------------------
2 files changed, 141 insertions(+), 189 deletions(-)
delete mode 100644 drivers/mmc/host/au1xmmc.h
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index 16b5640..fcbaf40 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -49,20 +49,104 @@
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1100_mmc.h>
-#include <au1xxx.h>
-#include "au1xmmc.h"
-
#define DRIVER_NAME "au1xxx-mmc"
/* Set this to enable special debugging macros */
/* #define DEBUG */
#ifdef DEBUG
-#define DBG(fmt, idx, args...) printk("au1xx(%d): DEBUG: " fmt, idx, ##args)
+#define DBG(fmt, idx, args...) \
+ printk(KERN_DEBUG "au1xmmc(%d): DEBUG: " fmt, idx, ##args)
#else
-#define DBG(fmt, idx, args...)
+#define DBG(fmt, idx, args...) do {} while (0)
#endif
+/* Hardware definitions */
+#define AU1XMMC_DESCRIPTOR_COUNT 1
+#define AU1XMMC_DESCRIPTOR_SIZE 2048
+
+#define AU1XMMC_OCR (MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \
+ MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \
+ MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
+
+/* This gives us a hard value for the stop command that we can write directly
+ * to the command register.
+ */
+#define STOP_CMD \
+ (SD_CMD_RT_1B | SD_CMD_CT_7 | (0xC << SD_CMD_CI_SHIFT) | SD_CMD_GO)
+
+/* This is the set of interrupts that we configure by default. */
+#define AU1XMMC_INTERRUPTS \
+ (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_RAT | \
+ SD_CONFIG_CR | SD_CONFIG_I)
+
+/* The poll event (looking for insert/remove events runs twice a second. */
+#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
+
+struct au1xmmc_host {
+ struct mmc_host *mmc;
+ struct mmc_request *mrq;
+
+ u32 flags;
+ u32 iobase;
+ u32 clock;
+ u32 bus_width;
+ u32 power_mode;
+
+ int status;
+
+ struct {
+ int len;
+ int dir;
+ } dma;
+
+ struct {
+ int index;
+ int offset;
+ int len;
+ } pio;
+
+ u32 tx_chan;
+ u32 rx_chan;
+
+ int irq;
+
+ struct timer_list timer;
+ struct tasklet_struct finish_task;
+ struct tasklet_struct data_task;
+ struct au1xmmc_platform_data *platdata;
+ struct platform_device *pdev;
+ struct resource *ioarea;
+};
+
+/* Status flags used by the host structure */
+#define HOST_F_XMIT 0x0001
+#define HOST_F_RECV 0x0002
+#define HOST_F_DMA 0x0010
+#define HOST_F_ACTIVE 0x0100
+#define HOST_F_STOP 0x1000
+
+#define HOST_S_IDLE 0x0001
+#define HOST_S_CMD 0x0002
+#define HOST_S_DATA 0x0003
+#define HOST_S_STOP 0x0004
+
+/* Easy access macros */
+#define HOST_STATUS(h) ((h)->iobase + SD_STATUS)
+#define HOST_CONFIG(h) ((h)->iobase + SD_CONFIG)
+#define HOST_ENABLE(h) ((h)->iobase + SD_ENABLE)
+#define HOST_TXPORT(h) ((h)->iobase + SD_TXPORT)
+#define HOST_RXPORT(h) ((h)->iobase + SD_RXPORT)
+#define HOST_CMDARG(h) ((h)->iobase + SD_CMDARG)
+#define HOST_BLKSIZE(h) ((h)->iobase + SD_BLKSIZE)
+#define HOST_CMD(h) ((h)->iobase + SD_CMD)
+#define HOST_CONFIG2(h) ((h)->iobase + SD_CONFIG2)
+#define HOST_TIMEOUT(h) ((h)->iobase + SD_TIMEOUT)
+#define HOST_DEBUG(h) ((h)->iobase + SD_DEBUG)
+
+#define DMA_CHANNEL(h) \
+ (((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
+
static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
{
u32 val = au_readl(HOST_CONFIG(host));
@@ -141,7 +225,6 @@ static int au1xmmc_card_readonly(struct mmc_host *mmc)
static void au1xmmc_finish_request(struct au1xmmc_host *host)
{
-
struct mmc_request *mrq = host->mrq;
host->mrq = NULL;
@@ -215,18 +298,14 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
au_sync();
/* Wait for the command to go on the line */
-
- while(1) {
- if (!(au_readl(HOST_CMD(host)) & SD_CMD_GO))
- break;
- }
+ while (au_readl(HOST_CMD(host)) & SD_CMD_GO)
+ /* nop */;
/* Wait for the command to come back */
-
if (wait) {
u32 status = au_readl(HOST_STATUS(host));
- while(!(status & SD_STATUS_CR))
+ while (!(status & SD_STATUS_CR))
status = au_readl(HOST_STATUS(host));
/* Clear the CR status */
@@ -240,12 +319,11 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
{
-
struct mmc_request *mrq = host->mrq;
struct mmc_data *data;
u32 crc;
- WARN_ON(host->status != HOST_S_DATA && host->status != HOST_S_STOP);
+ WARN_ON((host->status != HOST_S_DATA) && (host->status != HOST_S_STOP));
if (host->mrq == NULL)
return;
@@ -256,15 +334,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
status = au_readl(HOST_STATUS(host));
/* The transaction is really over when the SD_STATUS_DB bit is clear */
-
- while((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
+ while ((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
status = au_readl(HOST_STATUS(host));
data->error = 0;
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir);
/* Process any errors */
-
crc = (status & (SD_STATUS_WC | SD_STATUS_RC));
if (host->flags & HOST_F_XMIT)
crc |= ((status & 0x07) == 0x02) ? 0 : 1;
@@ -282,15 +358,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
#ifdef CONFIG_SOC_AU1200 /* DBDMA */
u32 chan = DMA_CHANNEL(host);
- chan_tab_t *c = *((chan_tab_t **) chan);
+ chan_tab_t *c = *((chan_tab_t **)chan);
au1x_dma_chan_t *cp = c->chan_ptr;
data->bytes_xfered = cp->ddma_bytecnt;
#endif
- }
- else
+ } else
data->bytes_xfered =
- (data->blocks * data->blksz) -
- host->pio.len;
+ (data->blocks * data->blksz) - host->pio.len;
}
au1xmmc_finish_request(host);
@@ -298,7 +372,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
static void au1xmmc_tasklet_data(unsigned long param)
{
- struct au1xmmc_host *host = (struct au1xmmc_host *) param;
+ struct au1xmmc_host *host = (struct au1xmmc_host *)param;
u32 status = au_readl(HOST_STATUS(host));
au1xmmc_data_complete(host, status);
@@ -308,11 +382,10 @@ static void au1xmmc_tasklet_data(unsigned long param)
static void au1xmmc_send_pio(struct au1xmmc_host *host)
{
-
- struct mmc_data *data = 0;
- int sg_len, max, count = 0;
- unsigned char *sg_ptr;
- u32 status = 0;
+ struct mmc_data *data;
+ int sg_len, max, count;
+ unsigned char *sg_ptr, val;
+ u32 status;
struct scatterlist *sg;
data = host->mrq->data;
@@ -327,14 +400,12 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
/* This is the space left inside the buffer */
sg_len = data->sg[host->pio.index].length - host->pio.offset;
- /* Check to if we need less then the size of the sg_buffer */
-
+ /* Check if we need less than the size of the sg_buffer */
max = (sg_len > host->pio.len) ? host->pio.len : sg_len;
- if (max > AU1XMMC_MAX_TRANSFER) max = AU1XMMC_MAX_TRANSFER;
-
- for(count = 0; count < max; count++ ) {
- unsigned char val;
+ if (max > AU1XMMC_MAX_TRANSFER)
+ max = AU1XMMC_MAX_TRANSFER;
+ for (count = 0; count < max; count++) {
status = au_readl(HOST_STATUS(host));
if (!(status & SD_STATUS_TH))
@@ -342,7 +413,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
val = *sg_ptr++;
- au_writel((unsigned long) val, HOST_TXPORT(host));
+ au_writel((unsigned long)val, HOST_TXPORT(host));
au_sync();
}
@@ -366,11 +437,10 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
static void au1xmmc_receive_pio(struct au1xmmc_host *host)
{
-
- struct mmc_data *data = 0;
- int sg_len = 0, max = 0, count = 0;
- unsigned char *sg_ptr = 0;
- u32 status = 0;
+ struct mmc_data *data;
+ int max, count, sg_len = 0;
+ unsigned char *sg_ptr = NULL;
+ u32 status, val;
struct scatterlist *sg;
data = host->mrq->data;
@@ -387,15 +457,15 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
/* This is the space left inside the buffer */
sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset;
- /* Check to if we need less then the size of the sg_buffer */
- if (sg_len < max) max = sg_len;
+ /* Check if we need less than the size of the sg_buffer */
+ if (sg_len < max)
+ max = sg_len;
}
if (max > AU1XMMC_MAX_TRANSFER)
max = AU1XMMC_MAX_TRANSFER;
- for(count = 0; count < max; count++ ) {
- u32 val;
+ for (count = 0; count < max; count++) {
status = au_readl(HOST_STATUS(host));
if (!(status & SD_STATUS_NE))
@@ -421,7 +491,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
val = au_readl(HOST_RXPORT(host));
if (sg_ptr)
- *sg_ptr++ = (unsigned char) (val & 0xFF);
+ *sg_ptr++ = (unsigned char)(val & 0xFF);
}
host->pio.len -= count;
@@ -433,7 +503,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
}
if (host->pio.len == 0) {
- //IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF);
+ /* IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF); */
IRQ_OFF(host, SD_CONFIG_NE);
if (host->flags & HOST_F_STOP)
@@ -443,17 +513,15 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
}
}
-/* static void au1xmmc_cmd_complete
- This is called when a command has been completed - grab the response
- and check for errors. Then start the data transfer if it is indicated.
-*/
-
+/* This is called when a command has been completed - grab the response
+ * and check for errors. Then start the data transfer if it is indicated.
+ */
static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
{
-
struct mmc_request *mrq = host->mrq;
struct mmc_command *cmd;
- int trans;
+ u32 r[4];
+ int i, trans;
if (!host->mrq)
return;
@@ -463,9 +531,6 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136) {
- u32 r[4];
- int i;
-
r[0] = au_readl(host->iobase + SD_RESP3);
r[1] = au_readl(host->iobase + SD_RESP2);
r[2] = au_readl(host->iobase + SD_RESP1);
@@ -473,10 +538,9 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
/* The CRC is omitted from the response, so really
* we only got 120 bytes, but the engine expects
- * 128 bits, so we have to shift things up
+ * 128 bits, so we have to shift things up.
*/
-
- for(i = 0; i < 4; i++) {
+ for (i = 0; i < 4; i++) {
cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8;
if (i != 3)
cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24;
@@ -487,22 +551,20 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
* our response omits the CRC, our data ends up
* being shifted 8 bits to the right. In this case,
* that means that the OSR data starts at bit 31,
- * so we can just read RESP0 and return that
+ * so we can just read RESP0 and return that.
*/
cmd->resp[0] = au_readl(host->iobase + SD_RESP0);
}
}
/* Figure out errors */
-
if (status & (SD_STATUS_SC | SD_STATUS_WC | SD_STATUS_RC))
cmd->error = -EILSEQ;
trans = host->flags & (HOST_F_XMIT | HOST_F_RECV);
if (!trans || cmd->error) {
-
- IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA|SD_CONFIG_RF);
+ IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF);
tasklet_schedule(&host->finish_task);
return;
}
@@ -529,18 +591,15 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
{
-
unsigned int pbus = get_au1x00_speed();
unsigned int divisor;
u32 config;
/* From databook:
- divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
- */
-
+ * divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
+ */
pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2);
pbus /= 2;
-
divisor = ((pbus / rate) / 2) - 1;
config = au_readl(HOST_CONFIG(host));
@@ -552,8 +611,8 @@ static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
au_sync();
}
-static int
-au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
+static int au1xmmc_prepare_data(struct au1xmmc_host *host,
+ struct mmc_data *data)
{
int datalen = data->blocks * data->blksz;
@@ -582,7 +641,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
au1xxx_dbdma_stop(channel);
- for(i = 0; i < host->dma.len; i++) {
+ for (i = 0; i < host->dma.len; i++) {
u32 ret = 0, flags = DDMA_FLAGS_NOIE;
struct scatterlist *sg = &data->sg[i];
int sg_len = sg->length;
@@ -592,14 +651,12 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
if (i == host->dma.len - 1)
flags = DDMA_FLAGS_IE;
- if (host->flags & HOST_F_XMIT){
- ret = au1xxx_dbdma_put_source_flags(channel,
- (void *) sg_virt(sg), len, flags);
- }
- else {
- ret = au1xxx_dbdma_put_dest_flags(channel,
- (void *) sg_virt(sg),
- len, flags);
+ if (host->flags & HOST_F_XMIT) {
+ ret = au1xxx_dbdma_put_source_flags(channel,
+ (void *)sg_virt(sg), len, flags);
+ } else {
+ ret = au1xxx_dbdma_put_dest_flags(channel,
+ (void *)sg_virt(sg), len, flags);
}
if (!ret)
@@ -608,8 +665,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
datalen -= len;
}
#endif
- }
- else {
+ } else {
host->pio.index = 0;
host->pio.offset = 0;
host->pio.len = datalen;
@@ -618,7 +674,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
IRQ_ON(host, SD_CONFIG_TH);
else
IRQ_ON(host, SD_CONFIG_NE);
- //IRQ_ON(host, SD_CONFIG_RA|SD_CONFIG_RF);
+ /* IRQ_ON(host, SD_CONFIG_RA | SD_CONFIG_RF); */
}
return 0;
@@ -629,15 +685,10 @@ dataerr:
return -ETIMEDOUT;
}
-/* static void au1xmmc_request
- This actually starts a command or data transaction
-*/
-
+/* This actually starts a command or data transaction */
static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
{
-
struct au1xmmc_host *host = mmc_priv(mmc);
- unsigned int flags = 0;
int ret = 0;
WARN_ON(irqs_disabled());
@@ -648,7 +699,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
if (mrq->data) {
FLUSH_FIFO(host);
- flags = mrq->data->flags;
ret = au1xmmc_prepare_data(host, mrq->data);
}
@@ -663,7 +713,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
static void au1xmmc_reset_controller(struct au1xmmc_host *host)
{
-
/* Apply the clock */
au_writel(SD_ENABLE_CE, HOST_ENABLE(host));
au_sync_delay(1);
@@ -693,7 +742,7 @@ static void au1xmmc_reset_controller(struct au1xmmc_host *host)
}
-static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
+static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct au1xmmc_host *host = mmc_priv(mmc);
u32 config2;
diff --git a/drivers/mmc/host/au1xmmc.h b/drivers/mmc/host/au1xmmc.h
deleted file mode 100644
index 3b40065..0000000
--- a/drivers/mmc/host/au1xmmc.h
+++ /dev/null
@@ -1,97 +0,0 @@
-#ifndef _AU1XMMC_H_
-#define _AU1XMMC_H_
-
-/* Hardware definitions */
-
-#define AU1XMMC_DESCRIPTOR_COUNT 1
-#define AU1XMMC_DESCRIPTOR_SIZE 2048
-
-#define AU1XMMC_OCR ( MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \
- MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \
- MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
-
-/* Easy access macros */
-
-#define HOST_STATUS(h) ((h)->iobase + SD_STATUS)
-#define HOST_CONFIG(h) ((h)->iobase + SD_CONFIG)
-#define HOST_ENABLE(h) ((h)->iobase + SD_ENABLE)
-#define HOST_TXPORT(h) ((h)->iobase + SD_TXPORT)
-#define HOST_RXPORT(h) ((h)->iobase + SD_RXPORT)
-#define HOST_CMDARG(h) ((h)->iobase + SD_CMDARG)
-#define HOST_BLKSIZE(h) ((h)->iobase + SD_BLKSIZE)
-#define HOST_CMD(h) ((h)->iobase + SD_CMD)
-#define HOST_CONFIG2(h) ((h)->iobase + SD_CONFIG2)
-#define HOST_TIMEOUT(h) ((h)->iobase + SD_TIMEOUT)
-#define HOST_DEBUG(h) ((h)->iobase + SD_DEBUG)
-
-#define DMA_CHANNEL(h) \
- ( ((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
-
-/* This gives us a hard value for the stop command that we can write directly
- * to the command register
- */
-
-#define STOP_CMD (SD_CMD_RT_1B|SD_CMD_CT_7|(0xC << SD_CMD_CI_SHIFT)|SD_CMD_GO)
-
-/* This is the set of interrupts that we configure by default */
-
-#if 0
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_DD | \
- SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-#endif
-
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | \
- SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-/* The poll event (looking for insert/remove events runs twice a second */
-#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
-
-struct au1xmmc_host {
- struct mmc_host *mmc;
- struct mmc_request *mrq;
-
- u32 flags;
- u32 iobase;
- u32 clock;
- u32 bus_width;
- u32 power_mode;
-
- int status;
-
- struct {
- int len;
- int dir;
- } dma;
-
- struct {
- int index;
- int offset;
- int len;
- } pio;
-
- u32 tx_chan;
- u32 rx_chan;
-
- int irq;
-
- struct timer_list timer;
- struct tasklet_struct finish_task;
- struct tasklet_struct data_task;
- struct au1xmmc_platform_data *platdata;
- struct platform_device *pdev;
- struct resource *ioarea;
-};
-
-/* Status flags used by the host structure */
-
-#define HOST_F_XMIT 0x0001
-#define HOST_F_RECV 0x0002
-#define HOST_F_DMA 0x0010
-#define HOST_F_ACTIVE 0x0100
-#define HOST_F_STOP 0x1000
-
-#define HOST_S_IDLE 0x0001
-#define HOST_S_CMD 0x0002
-#define HOST_S_DATA 0x0003
-#define HOST_S_STOP 0x0004
-
-#endif
--
1.5.5.3
--
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