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path: root/drivers/staging/media/cxd2099/cxd2099.c
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Diffstat (limited to 'drivers/staging/media/cxd2099/cxd2099.c')
-rw-r--r--drivers/staging/media/cxd2099/cxd2099.c165
1 files changed, 116 insertions, 49 deletions
diff --git a/drivers/staging/media/cxd2099/cxd2099.c b/drivers/staging/media/cxd2099/cxd2099.c
index 370ecb959543..f28916ea69f1 100644
--- a/drivers/staging/media/cxd2099/cxd2099.c
+++ b/drivers/staging/media/cxd2099/cxd2099.c
@@ -1,7 +1,7 @@
/*
* cxd2099.c: Driver for the CXD2099AR Common Interface Controller
*
- * Copyright (C) 2010-2011 Digital Devices GmbH
+ * Copyright (C) 2010-2013 Digital Devices GmbH
*
*
* This program is free software; you can redistribute it and/or
@@ -33,7 +33,10 @@
#include "cxd2099.h"
-#define MAX_BUFFER_SIZE 248
+/* comment this line to deactivate the cxd2099ar buffer mode */
+#define BUFFER_MODE 1
+
+static int read_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount);
struct cxd {
struct dvb_ca_en50221 en;
@@ -48,6 +51,7 @@ struct cxd {
int mode;
int ready;
int dr;
+ int write_busy;
int slot_stat;
u8 amem[1024];
@@ -55,6 +59,9 @@ struct cxd {
int cammode;
struct mutex lock;
+
+ u8 rbuf[1028];
+ u8 wbuf[1028];
};
static int i2c_write_reg(struct i2c_adapter *adapter, u8 adr,
@@ -73,7 +80,7 @@ static int i2c_write_reg(struct i2c_adapter *adapter, u8 adr,
}
static int i2c_write(struct i2c_adapter *adapter, u8 adr,
- u8 *data, u8 len)
+ u8 *data, u16 len)
{
struct i2c_msg msg = {.addr = adr, .flags = 0, .buf = data, .len = len};
@@ -100,12 +107,12 @@ static int i2c_read_reg(struct i2c_adapter *adapter, u8 adr,
}
static int i2c_read(struct i2c_adapter *adapter, u8 adr,
- u8 reg, u8 *data, u8 n)
+ u8 reg, u8 *data, u16 n)
{
struct i2c_msg msgs[2] = {{.addr = adr, .flags = 0,
- .buf = &reg, .len = 1},
- {.addr = adr, .flags = I2C_M_RD,
- .buf = data, .len = n} };
+ .buf = &reg, .len = 1},
+ {.addr = adr, .flags = I2C_M_RD,
+ .buf = data, .len = n} };
if (i2c_transfer(adapter, msgs, 2) != 2) {
dev_err(&adapter->dev, "error in i2c_read\n");
@@ -114,14 +121,26 @@ static int i2c_read(struct i2c_adapter *adapter, u8 adr,
return 0;
}
-static int read_block(struct cxd *ci, u8 adr, u8 *data, u8 n)
+static int read_block(struct cxd *ci, u8 adr, u8 *data, u16 n)
{
- int status;
+ int status = 0;
- status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, adr);
+ if (ci->lastaddress != adr)
+ status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, adr);
if (!status) {
ci->lastaddress = adr;
- status = i2c_read(ci->i2c, ci->cfg.adr, 1, data, n);
+
+ while (n) {
+ int len = n;
+
+ if (ci->cfg.max_i2c && (len > ci->cfg.max_i2c))
+ len = ci->cfg.max_i2c;
+ status = i2c_read(ci->i2c, ci->cfg.adr, 1, data, len);
+ if (status)
+ return status;
+ data += len;
+ n -= len;
+ }
}
return status;
}
@@ -182,16 +201,16 @@ static int write_io(struct cxd *ci, u16 address, u8 val)
static int write_regm(struct cxd *ci, u8 reg, u8 val, u8 mask)
{
- int status;
+ int status = 0;
- status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, reg);
+ if (ci->lastaddress != reg)
+ status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, reg);
if (!status && reg >= 6 && reg <= 8 && mask != 0xff)
status = i2c_read_reg(ci->i2c, ci->cfg.adr, 1, &ci->regs[reg]);
+ ci->lastaddress = reg;
ci->regs[reg] = (ci->regs[reg] & (~mask)) | val;
- if (!status) {
- ci->lastaddress = reg;
+ if (!status)
status = i2c_write_reg(ci->i2c, ci->cfg.adr, 1, ci->regs[reg]);
- }
if (reg == 0x20)
ci->regs[reg] &= 0x7f;
return status;
@@ -203,16 +222,29 @@ static int write_reg(struct cxd *ci, u8 reg, u8 val)
}
#ifdef BUFFER_MODE
-static int write_block(struct cxd *ci, u8 adr, u8 *data, int n)
+static int write_block(struct cxd *ci, u8 adr, u8 *data, u16 n)
{
- int status;
- u8 buf[256] = {1};
-
- status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, adr);
- if (!status) {
- ci->lastaddress = adr;
- memcpy(buf + 1, data, n);
- status = i2c_write(ci->i2c, ci->cfg.adr, buf, n + 1);
+ int status = 0;
+ u8 *buf = ci->wbuf;
+
+ if (ci->lastaddress != adr)
+ status = i2c_write_reg(ci->i2c, ci->cfg.adr, 0, adr);
+ if (status)
+ return status;
+
+ ci->lastaddress = adr;
+ buf[0] = 1;
+ while (n) {
+ int len = n;
+
+ if (ci->cfg.max_i2c && (len + 1 > ci->cfg.max_i2c))
+ len = ci->cfg.max_i2c - 1;
+ memcpy(buf + 1, data, len);
+ status = i2c_write(ci->i2c, ci->cfg.adr, buf, len + 1);
+ if (status)
+ return status;
+ n -= len;
+ data += len;
}
return status;
}
@@ -238,6 +270,8 @@ static void set_mode(struct cxd *ci, int mode)
static void cam_mode(struct cxd *ci, int mode)
{
+ u8 dummy;
+
if (mode == ci->cammode)
return;
@@ -246,16 +280,15 @@ static void cam_mode(struct cxd *ci, int mode)
write_regm(ci, 0x20, 0x80, 0x80);
break;
case 0x01:
-#ifdef BUFFER_MODE
if (!ci->en.read_data)
return;
+ ci->write_busy = 0;
dev_info(&ci->i2c->dev, "enable cam buffer mode\n");
- /* write_reg(ci, 0x0d, 0x00); */
- /* write_reg(ci, 0x0e, 0x01); */
+ write_reg(ci, 0x0d, 0x00);
+ write_reg(ci, 0x0e, 0x01);
write_regm(ci, 0x08, 0x40, 0x40);
- /* read_reg(ci, 0x12, &dummy); */
+ read_reg(ci, 0x12, &dummy);
write_regm(ci, 0x08, 0x80, 0x80);
-#endif
break;
default:
break;
@@ -325,7 +358,10 @@ static int init(struct cxd *ci)
if (status < 0)
break;
- if (ci->cfg.clock_mode) {
+ if (ci->cfg.clock_mode == 2) {
+ /* bitrate*2^13/ 72000 */
+ u32 reg = ((ci->cfg.bitrate << 13) + 71999) / 72000;
+
if (ci->cfg.polarity) {
status = write_reg(ci, 0x09, 0x6f);
if (status < 0)
@@ -335,6 +371,25 @@ static int init(struct cxd *ci)
if (status < 0)
break;
}
+ status = write_reg(ci, 0x20, 0x08);
+ if (status < 0)
+ break;
+ status = write_reg(ci, 0x21, (reg >> 8) & 0xff);
+ if (status < 0)
+ break;
+ status = write_reg(ci, 0x22, reg & 0xff);
+ if (status < 0)
+ break;
+ } else if (ci->cfg.clock_mode == 1) {
+ if (ci->cfg.polarity) {
+ status = write_reg(ci, 0x09, 0x6f); /* D */
+ if (status < 0)
+ break;
+ } else {
+ status = write_reg(ci, 0x09, 0x6d);
+ if (status < 0)
+ break;
+ }
status = write_reg(ci, 0x20, 0x68);
if (status < 0)
break;
@@ -346,7 +401,7 @@ static int init(struct cxd *ci)
break;
} else {
if (ci->cfg.polarity) {
- status = write_reg(ci, 0x09, 0x4f);
+ status = write_reg(ci, 0x09, 0x4f); /* C */
if (status < 0)
break;
} else {
@@ -354,7 +409,6 @@ static int init(struct cxd *ci)
if (status < 0)
break;
}
-
status = write_reg(ci, 0x20, 0x28);
if (status < 0)
break;
@@ -401,7 +455,6 @@ static int read_attribute_mem(struct dvb_ca_en50221 *ca,
set_mode(ci, 1);
read_pccard(ci, address, &val, 1);
mutex_unlock(&ci->lock);
- /* printk(KERN_INFO "%02x:%02x\n", address,val); */
return val;
}
@@ -446,6 +499,9 @@ static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
{
struct cxd *ci = ca->data;
+ if (ci->cammode)
+ read_data(ca, slot, ci->rbuf, 0);
+
mutex_lock(&ci->lock);
cam_mode(ci, 0);
write_reg(ci, 0x00, 0x21);
@@ -465,7 +521,6 @@ static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
}
}
mutex_unlock(&ci->lock);
- /* msleep(500); */
return 0;
}
@@ -474,11 +529,19 @@ static int slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
struct cxd *ci = ca->data;
dev_info(&ci->i2c->dev, "%s\n", __func__);
+ if (ci->cammode)
+ read_data(ca, slot, ci->rbuf, 0);
mutex_lock(&ci->lock);
+ write_reg(ci, 0x00, 0x21);
+ write_reg(ci, 0x06, 0x1F);
+ msleep(300);
+
write_regm(ci, 0x09, 0x08, 0x08);
write_regm(ci, 0x20, 0x80, 0x80); /* Reset CAM Mode */
write_regm(ci, 0x06, 0x07, 0x07); /* Clear IO Mode */
+
ci->mode = -1;
+ ci->write_busy = 0;
mutex_unlock(&ci->lock);
return 0;
}
@@ -490,9 +553,7 @@ static int slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
mutex_lock(&ci->lock);
write_regm(ci, 0x09, 0x00, 0x08);
set_mode(ci, 0);
-#ifdef BUFFER_MODE
cam_mode(ci, 1);
-#endif
mutex_unlock(&ci->lock);
return 0;
}
@@ -506,12 +567,10 @@ static int campoll(struct cxd *ci)
return 0;
write_reg(ci, 0x05, istat);
- if (istat & 0x40) {
+ if (istat & 0x40)
ci->dr = 1;
- dev_info(&ci->i2c->dev, "DR\n");
- }
if (istat & 0x20)
- dev_info(&ci->i2c->dev, "WC\n");
+ ci->write_busy = 0;
if (istat & 2) {
u8 slotstat;
@@ -519,7 +578,8 @@ static int campoll(struct cxd *ci)
read_reg(ci, 0x01, &slotstat);
if (!(2 & slotstat)) {
if (!ci->slot_stat) {
- ci->slot_stat = DVB_CA_EN50221_POLL_CAM_PRESENT;
+ ci->slot_stat |=
+ DVB_CA_EN50221_POLL_CAM_PRESENT;
write_regm(ci, 0x03, 0x08, 0x08);
}
@@ -531,8 +591,8 @@ static int campoll(struct cxd *ci)
ci->ready = 0;
}
}
- if (istat & 8 &&
- ci->slot_stat == DVB_CA_EN50221_POLL_CAM_PRESENT) {
+ if ((istat & 8) &&
+ (ci->slot_stat == DVB_CA_EN50221_POLL_CAM_PRESENT)) {
ci->ready = 1;
ci->slot_stat |= DVB_CA_EN50221_POLL_CAM_READY;
}
@@ -553,7 +613,6 @@ static int poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
return ci->slot_stat;
}
-#ifdef BUFFER_MODE
static int read_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
{
struct cxd *ci = ca->data;
@@ -564,30 +623,38 @@ static int read_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
campoll(ci);
mutex_unlock(&ci->lock);
- dev_info(&ci->i2c->dev, "%s\n", __func__);
if (!ci->dr)
return 0;
mutex_lock(&ci->lock);
read_reg(ci, 0x0f, &msb);
read_reg(ci, 0x10, &lsb);
- len = (msb << 8) | lsb;
+ len = ((u16)msb << 8) | lsb;
+ if (len > ecount || len < 2) {
+ /* read it anyway or cxd may hang */
+ read_block(ci, 0x12, ci->rbuf, len);
+ mutex_unlock(&ci->lock);
+ return -EIO;
+ }
read_block(ci, 0x12, ebuf, len);
ci->dr = 0;
mutex_unlock(&ci->lock);
-
return len;
}
+#ifdef BUFFER_MODE
+
static int write_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
{
struct cxd *ci = ca->data;
+ if (ci->write_busy)
+ return -EAGAIN;
mutex_lock(&ci->lock);
- dev_info(&ci->i2c->dev, "%s %d\n", __func__, ecount);
write_reg(ci, 0x0d, ecount >> 8);
write_reg(ci, 0x0e, ecount & 0xff);
write_block(ci, 0x11, ebuf, ecount);
+ ci->write_busy = 1;
mutex_unlock(&ci->lock);
return ecount;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 20:41:29 +0000