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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 17:55:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 17:55:48 -0700
commit5b4ca4447757019f11a601b0009534ef84bed801 (patch)
tree09bc8445e61aea621580d7587c21ac3f2b0cafb4 /drivers/media/pci/saa7134/saa7134-i2c.c
parent0db9723cacf4d62bc3685fb15179b39ee4e17679 (diff)
parentfaebbd8f134f0c054f372982c8ddd1bbcc41b440 (diff)
Merge tag 'media/v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: - Lots of improvements at the DVB API DocBook documentation. Now, the frontend and the network APIs are fully in sync with the Kernel and looks more like the rest of the media documentation; - New frontend driver: cx24120 - New driver for a PCI device: cobalt. This driver is actually not sold in the market, but it is a good example of a multi-HDMI input device; - The dt3155 driver were promoted from staging; - The mantis driver got remote controller support; - New V4L2 driver for ST bdisp SoC chipsets; - Make sparse and smatch happier: several bugs were solved by fixing the issues reported by those static code analyzers. - Lots of new device additions, new features, improvements and cleanups at the existing drivers. * tag 'media/v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (553 commits) [media] lmedm04: fix the range for relative measurements [media] lmedm04: use u32 instead of u64 for relative stats [media] omap3isp: remove unused var [media] saa7134: fix page size on some archs [media] use CONFIG_PM_SLEEP for suspend/resume [media] tuner-i2c: be consistent with I2C declaration [media] si470x: cleanup define namespace [media] bdisp: prevent compiling on random arch [media] vb2: Don't WARN when v4l2_buffer.bytesused is 0 for multiplanar buffers [media] MAINTAINERS: Add entry for the Renesas VSP1 driver [media] videodev2.h: fix copy-and-paste error in V4L2_MAP_XFER_FUNC_DEFAULT [media] Revert "[media] vb2: Push mmap_sem down to memops" [media] mantis: cleanup a warning [media] bdisp-debug: don't try to divide by s64 [media] cx88: don't declare restart_video_queue if not used [media] au0828: move dev->boards atribuition to happen earlier [media] lmedm04: implement dvb v5 statistics [media] bdisp: remove unused var [media] bdisp: remove needless check ts2020: fix compilation on i386 ...
Diffstat (limited to 'drivers/media/pci/saa7134/saa7134-i2c.c')
-rw-r--r--drivers/media/pci/saa7134/saa7134-i2c.c87
1 files changed, 46 insertions, 41 deletions
diff --git a/drivers/media/pci/saa7134/saa7134-i2c.c b/drivers/media/pci/saa7134/saa7134-i2c.c
index f4da674e7f26..8ef6399d794f 100644
--- a/drivers/media/pci/saa7134/saa7134-i2c.c
+++ b/drivers/media/pci/saa7134/saa7134-i2c.c
@@ -20,14 +20,15 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include "saa7134.h"
+#include "saa7134-reg.h"
+
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
-#include "saa7134-reg.h"
-#include "saa7134.h"
#include <media/v4l2-common.h>
/* ----------------------------------------------------------- */
@@ -40,8 +41,15 @@ static unsigned int i2c_scan;
module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
-#define d1printk if (1 == i2c_debug) printk
-#define d2printk if (2 == i2c_debug) printk
+#define i2c_dbg(level, fmt, arg...) do { \
+ if (i2c_debug == level) \
+ printk(KERN_DEBUG pr_fmt("i2c: " fmt), ## arg); \
+ } while (0)
+
+#define i2c_cont(level, fmt, arg...) do { \
+ if (i2c_debug == level) \
+ pr_cont(fmt, ## arg); \
+ } while (0)
#define I2C_WAIT_DELAY 32
#define I2C_WAIT_RETRY 16
@@ -89,23 +97,20 @@ static inline enum i2c_status i2c_get_status(struct saa7134_dev *dev)
enum i2c_status status;
status = saa_readb(SAA7134_I2C_ATTR_STATUS) & 0x0f;
- d2printk(KERN_DEBUG "%s: i2c stat <= %s\n",dev->name,
- str_i2c_status[status]);
+ i2c_dbg(2, "i2c stat <= %s\n", str_i2c_status[status]);
return status;
}
static inline void i2c_set_status(struct saa7134_dev *dev,
enum i2c_status status)
{
- d2printk(KERN_DEBUG "%s: i2c stat => %s\n",dev->name,
- str_i2c_status[status]);
+ i2c_dbg(2, "i2c stat => %s\n", str_i2c_status[status]);
saa_andorb(SAA7134_I2C_ATTR_STATUS,0x0f,status);
}
static inline void i2c_set_attr(struct saa7134_dev *dev, enum i2c_attr attr)
{
- d2printk(KERN_DEBUG "%s: i2c attr => %s\n",dev->name,
- str_i2c_attr[attr]);
+ i2c_dbg(2, "i2c attr => %s\n", str_i2c_attr[attr]);
saa_andorb(SAA7134_I2C_ATTR_STATUS,0xc0,attr << 6);
}
@@ -168,7 +173,7 @@ static int i2c_reset(struct saa7134_dev *dev)
enum i2c_status status;
int count;
- d2printk(KERN_DEBUG "%s: i2c reset\n",dev->name);
+ i2c_dbg(2, "i2c reset\n");
status = i2c_get_status(dev);
if (!i2c_is_error(status))
return true;
@@ -206,7 +211,7 @@ static inline int i2c_send_byte(struct saa7134_dev *dev,
// dword |= 0x40 << 16; /* 400 kHz */
dword |= 0xf0 << 24;
saa_writel(SAA7134_I2C_ATTR_STATUS >> 2, dword);
- d2printk(KERN_DEBUG "%s: i2c data => 0x%x\n",dev->name,data);
+ i2c_dbg(2, "i2c data => 0x%x\n", data);
if (!i2c_is_busy_wait(dev))
return -EIO;
@@ -228,7 +233,7 @@ static inline int i2c_recv_byte(struct saa7134_dev *dev)
if (i2c_is_error(status))
return -EIO;
data = saa_readb(SAA7134_I2C_DATA);
- d2printk(KERN_DEBUG "%s: i2c data <= 0x%x\n",dev->name,data);
+ i2c_dbg(2, "i2c data <= 0x%x\n", data);
return data;
}
@@ -245,12 +250,12 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
if (!i2c_reset(dev))
return -EIO;
- d2printk("start xfer\n");
- d1printk(KERN_DEBUG "%s: i2c xfer:",dev->name);
+ i2c_dbg(2, "start xfer\n");
+ i2c_dbg(1, "i2c xfer:");
for (i = 0; i < num; i++) {
if (!(msgs[i].flags & I2C_M_NOSTART) || 0 == i) {
/* send address */
- d2printk("send address\n");
+ i2c_dbg(2, "send address\n");
addr = msgs[i].addr << 1;
if (msgs[i].flags & I2C_M_RD)
addr |= 1;
@@ -262,50 +267,50 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
* needed to talk to the mt352 demux
* thanks to pinnacle for the hint */
int quirk = 0xfe;
- d1printk(" [%02x quirk]",quirk);
+ i2c_cont(1, " [%02x quirk]", quirk);
i2c_send_byte(dev,START,quirk);
i2c_recv_byte(dev);
}
- d1printk(" < %02x", addr);
+ i2c_cont(1, " < %02x", addr);
rc = i2c_send_byte(dev,START,addr);
if (rc < 0)
goto err;
}
if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
- d2printk("read bytes\n");
+ i2c_dbg(2, "read bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
- d1printk(" =");
+ i2c_cont(1, " =");
rc = i2c_recv_byte(dev);
if (rc < 0)
goto err;
- d1printk("%02x", rc);
+ i2c_cont(1, "%02x", rc);
msgs[i].buf[byte] = rc;
}
/* discard mysterious extra byte when reading
from Samsung S5H1411. i2c bus gets error
if we do not. */
if (0x19 == msgs[i].addr) {
- d1printk(" ?");
+ i2c_cont(1, " ?");
rc = i2c_recv_byte(dev);
if (rc < 0)
goto err;
- d1printk("%02x", rc);
+ i2c_cont(1, "%02x", rc);
}
} else {
/* write bytes */
- d2printk("write bytes\n");
+ i2c_dbg(2, "write bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
data = msgs[i].buf[byte];
- d1printk(" %02x", data);
+ i2c_cont(1, " %02x", data);
rc = i2c_send_byte(dev,CONTINUE,data);
if (rc < 0)
goto err;
}
}
}
- d2printk("xfer done\n");
- d1printk(" >");
+ i2c_dbg(2, "xfer done\n");
+ i2c_cont(1, " >");
i2c_set_attr(dev,STOP);
rc = -EIO;
if (!i2c_is_busy_wait(dev))
@@ -316,12 +321,12 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
/* ensure that the bus is idle for at least one bit slot */
msleep(1);
- d1printk("\n");
+ i2c_cont(1, "\n");
return num;
err:
if (1 == i2c_debug) {
status = i2c_get_status(dev);
- printk(" ERROR: %s\n",str_i2c_status[status]);
+ i2c_cont(1, " ERROR: %s\n", str_i2c_status[status]);
}
return rc;
}
@@ -359,22 +364,22 @@ saa7134_i2c_eeprom(struct saa7134_dev *dev, unsigned char *eedata, int len)
dev->i2c_client.addr = 0xa0 >> 1;
buf = 0;
if (1 != (err = i2c_master_send(&dev->i2c_client,&buf,1))) {
- printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
+ pr_info("%s: Huh, no eeprom present (err=%d)?\n",
dev->name,err);
return -1;
}
if (len != (err = i2c_master_recv(&dev->i2c_client,eedata,len))) {
- printk(KERN_WARNING "%s: i2c eeprom read error (err=%d)\n",
+ pr_warn("%s: i2c eeprom read error (err=%d)\n",
dev->name,err);
return -1;
}
- for (i = 0; i < len; i++) {
- if (0 == (i % 16))
- printk(KERN_INFO "%s: i2c eeprom %02x:",dev->name,i);
- printk(" %02x",eedata[i]);
- if (15 == (i % 16))
- printk("\n");
+
+ for (i = 0; i < len; i += 16) {
+ int size = (len - i) > 16 ? 16 : len - i;
+
+ pr_info("i2c eeprom %02x: %*ph\n", i, size, &eedata[i]);
}
+
return 0;
}
@@ -386,7 +391,7 @@ static char *i2c_devs[128] = {
[ 0x5a >> 1 ] = "remote control",
};
-static void do_i2c_scan(char *name, struct i2c_client *c)
+static void do_i2c_scan(struct i2c_client *c)
{
unsigned char buf;
int i,rc;
@@ -396,8 +401,8 @@ static void do_i2c_scan(char *name, struct i2c_client *c)
rc = i2c_master_recv(c,&buf,0);
if (rc < 0)
continue;
- printk("%s: i2c scan: found device @ 0x%x [%s]\n",
- name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
+ pr_info("i2c scan: found device @ 0x%x [%s]\n",
+ i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
}
@@ -415,7 +420,7 @@ int saa7134_i2c_register(struct saa7134_dev *dev)
saa7134_i2c_eeprom(dev,dev->eedata,sizeof(dev->eedata));
if (i2c_scan)
- do_i2c_scan(dev->name,&dev->i2c_client);
+ do_i2c_scan(&dev->i2c_client);
/* Instantiate the IR receiver device, if present */
saa7134_probe_i2c_ir(dev);