On 18 февраля 2010, liplianin@xxxxx wrote:
> I also got the unbranded dm1105 card. I tried the four possible i2c
> addresses, just i case. Noen worked of course. Then I traced the i2c
> pins on the tuner to pins 100 and 101 on the DM1105.
> These are GPIO pins, so bit-banging i2c on these pins seems to be the
> solution.
>
> scl = p101 = gpio14
> sda = p100 = gpio13
Here is the patch to test. Use option card=4.
modprobe dm1105 card=4
--
Igor M. Liplianin
Microsoft Windows Free Zone - Linux used for all Computing Tasks
--- a/linux/drivers/media/dvb/dm1105/dm1105.c Sun Feb 07 16:26:33 2010 +0200
+++ b/linux/drivers/media/dvb/dm1105/dm1105.c Sat Feb 20 16:35:08 2010 +0200
@@ -20,6 +20,7 @@
*/
#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -47,11 +48,12 @@
#define UNSET (-1U)
-#define DM1105_BOARD_NOAUTO UNSET
-#define DM1105_BOARD_UNKNOWN 0
-#define DM1105_BOARD_DVBWORLD_2002 1
-#define DM1105_BOARD_DVBWORLD_2004 2
-#define DM1105_BOARD_AXESS_DM05 3
+#define DM1105_BOARD_NOAUTO UNSET
+#define DM1105_BOARD_UNKNOWN 0
+#define DM1105_BOARD_DVBWORLD_2002 1
+#define DM1105_BOARD_DVBWORLD_2004 2
+#define DM1105_BOARD_AXESS_DM05 3
+#define DM1105_BOARD_UNBRANDED_I2C_ON_GPIO 4
/* ----------------------------------------------- */
/*
@@ -155,23 +157,27 @@
#define DM1105_MAX 0x04
#define DRIVER_NAME "dm1105"
+#define DM1105_I2C_GPIO_NAME "dm1105-gpio"
#define DM1105_DMA_PACKETS 47
#define DM1105_DMA_PACKET_LENGTH (128*4)
#define DM1105_DMA_BYTES (128 * 4 * DM1105_DMA_PACKETS)
/* GPIO's for LNB power control */
-#define DM1105_LNB_MASK 0x00000000
+#define DM1105_LNB_MASK 0x00006000
#define DM1105_LNB_OFF 0x00020000
#define DM1105_LNB_13V 0x00010100
#define DM1105_LNB_18V 0x00000100
/* GPIO's for LNB power control for Axess DM05 */
-#define DM05_LNB_MASK 0x00000000
+#define DM05_LNB_MASK 0x00006000
#define DM05_LNB_OFF 0x00020000/* actually 13v */
#define DM05_LNB_13V 0x00020000
#define DM05_LNB_18V 0x00030000
+#define GPIO13 (1 << 13)
+#define GPIO14 (1 << 14)
+
static unsigned int card[] = {[0 ... 3] = UNSET };
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(card, "card type");
@@ -185,7 +191,9 @@
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
struct dm1105_board {
- char *name;
+ char *name;
+ int i2c_on_gpio;
+ u32 gpio_scl, gpio_sda;
};
struct dm1105_subid {
@@ -207,6 +215,12 @@
[DM1105_BOARD_AXESS_DM05] = {
.name = "Axess/EasyTv DM05",
},
+ [DM1105_BOARD_UNBRANDED_I2C_ON_GPIO] = {
+ .name = "Unbranded DM1105 with i2c on GPIOs",
+ .i2c_on_gpio = 1,
+ .gpio_scl = GPIO14,
+ .gpio_sda = GPIO13,
+ },
};
static const struct dm1105_subid dm1105_subids[] = {
@@ -292,6 +306,8 @@
/* i2c */
struct i2c_adapter i2c_adap;
+ struct i2c_adapter i2c_bb_adap;
+ struct i2c_algo_bit_data i2c_bit;
/* irq */
struct work_struct work;
@@ -327,6 +343,97 @@
#define dm_setl(reg, bit) dm_andorl((reg), (bit), (bit))
#define dm_clearl(reg, bit) dm_andorl((reg), (bit), 0)
+/* The chip has 18 GPIOs. In HOST mode GPIO's used as 15 bit address lines,
+ so we can use only 3 GPIO's from GPIO15 to GPIO17.
+ Here I don't check whether HOST is enebled as it is not implemented yet.
+ */
+void dm1105_gpio_set(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ dm_setl(DM1105_GPIOVAL, mask & 0x0003ffff);
+
+}
+
+void dm1105_gpio_clear(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ dm_clearl(DM1105_GPIOVAL, mask & 0x0003ffff);
+
+}
+
+u32 dm1105_gpio_get(struct dm1105_dev *dev, u32 mask)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if (mask & 0x0003ffff)
+ return dm_readl(DM1105_GPIOVAL);
+
+ return 0;
+}
+
+void dm1105_gpio_enable(struct dm1105_dev *dev, u32 mask, int asoutput)
+{
+ if (mask & 0xfffc0000)
+ printk(KERN_ERR "%s: Only 18 GPIO's are allowed\n", __func__);
+
+ if ((mask & 0x0003ffff) && asoutput)
+ dm_clearl(DM1105_GPIOCTR, mask & 0x0003ffff);
+ else if ((mask & 0x0003ffff) && !asoutput)
+ dm_setl(DM1105_GPIOCTR, mask & 0x0003ffff);
+
+}
+
+static void dm1105_setline(struct dm1105_dev *dev, u32 line, int state)
+{
+ if (state)
+ dm1105_gpio_enable(dev, line, 0);
+ else {
+ dm1105_gpio_enable(dev, line, 1);
+ dm1105_gpio_clear(dev, line);
+ }
+}
+
+static void dm1105_setsda(void *data, int state)
+{
+ struct dm1105_dev *dev = data;
+
+ dm1105_setline(dev, dm1105_boards[dev->boardnr].gpio_sda, state);
+}
+
+static void dm1105_setscl(void *data, int state)
+{
+ struct dm1105_dev *dev = data;
+
+ dm1105_setline(dev, dm1105_boards[dev->boardnr].gpio_scl, state);
+}
+
+static int dm1105_getsda(void *data)
+{
+ struct dm1105_dev *dev = data;
+
+ return dm1105_gpio_get(dev, dm1105_boards[dev->boardnr].gpio_sda);
+}
+
+static int dm1105_getscl(void *data)
+{
+ struct dm1105_dev *dev = data;
+
+ return dm1105_gpio_get(dev, dm1105_boards[dev->boardnr].gpio_scl);
+}
+
+//static int dm1105_i2c_bb_xfer(struct i2c_adapter *i2c_adap,
+// struct i2c_msg *msgs, int num)
+//{
+// return num;
+//}
+
static int dm1105_i2c_xfer(struct i2c_adapter *i2c_adap,
struct i2c_msg *msgs, int num)
{
@@ -425,6 +532,14 @@
#endif
};
+//static struct i2c_algorithm dm1105_bb_algo = {
+// .master_xfer = dm1105_i2c_bb_xfer,
+// .functionality = functionality,
+//#ifdef NEED_ALGO_CONTROL
+// .algo_control = dummy_algo_control,
+//#endif
+//};
+
static inline struct dm1105_dev *feed_to_dm1105_dev(struct dvb_demux_feed *feed)
{
return container_of(feed->demux, struct dm1105_dev, demux);
@@ -742,6 +857,33 @@
int ret;
switch (dev->boardnr) {
+ case DM1105_BOARD_UNBRANDED_I2C_ON_GPIO:
+ dev->fe = dvb_attach(
+ stv0299_attach, &sharp_z0194a_config,
+ &dev->i2c_bb_adap);
+ if (dev->fe) {
+ dev->fe->ops.set_voltage = dm1105_set_voltage;
+ dvb_attach(dvb_pll_attach, dev->fe, 0x60,
+ &dev->i2c_bb_adap, DVB_PLL_OPERA1);
+ break;
+ }
+
+ dev->fe = dvb_attach(
+ stv0288_attach, &earda_config,
+ &dev->i2c_bb_adap);
+ if (dev->fe) {
+ dev->fe->ops.set_voltage = dm1105_set_voltage;
+ dvb_attach(stb6000_attach, dev->fe, 0x61,
+ &dev->i2c_bb_adap);
+ break;
+ }
+
+ dev->fe = dvb_attach(
+ si21xx_attach, &serit_config,
+ &dev->i2c_bb_adap);
+ if (dev->fe)
+ dev->fe->ops.set_voltage = dm1105_set_voltage;
+ break;
case DM1105_BOARD_DVBWORLD_2004:
dev->fe = dvb_attach(
cx24116_attach, &serit_sp2633_config,
@@ -904,12 +1046,48 @@
if (ret < 0)
goto err_dm1105_hw_exit;
+#if 0
+ /* second i2c for GPIO connected devices */
+ i2c_set_adapdata(&dev->i2c_bb_adap, dev);
+ strcpy(dev->i2c_bb_adap.name, DM1105_I2C_GPIO_NAME);
+ dev->i2c_bb_adap.owner = THIS_MODULE;
+ dev->i2c_bb_adap.class = I2C_CLASS_TV_DIGITAL;
+ dev->i2c_bb_adap.dev.parent = &pdev->dev;
+ dev->i2c_bb_adap.algo = &dm1105_bb_algo;
+ dev->i2c_bb_adap.algo_data = dev;
+ ret = i2c_add_adapter(&dev->i2c_bb_adap);
+ if (ret < 0)
+ goto err_i2c_del_adapter;
+#else
+ /* i2c */
+ i2c_set_adapdata(&dev->i2c_adap, dev);
+ strcpy(dev->i2c_bb_adap.name, DM1105_I2C_GPIO_NAME);
+ dev->i2c_bb_adap.owner = THIS_MODULE;
+ dev->i2c_bb_adap.class = I2C_CLASS_TV_DIGITAL;
+ dev->i2c_bb_adap.dev.parent = &pdev->dev;
+ dev->i2c_bb_adap.algo_data = &dev->i2c_bit;
+ dev->i2c_bit.data = dev;
+ dev->i2c_bit.setsda = dm1105_setsda;
+ dev->i2c_bit.setscl = dm1105_setscl;
+ dev->i2c_bit.getsda = dm1105_getsda;
+ dev->i2c_bit.getscl = dm1105_getscl;
+ dev->i2c_bit.udelay = 10;
+ dev->i2c_bit.timeout = 10;
+
+ /* Raise SCL and SDA */
+ dm1105_setsda(dev, 1);
+ dm1105_setscl(dev, 1);
+
+ ret = i2c_bit_add_bus(&dev->i2c_bb_adap);
+ if (ret < 0)
+ goto err_i2c_del_adapter;
+#endif
/* dvb */
ret = dvb_register_adapter(&dev->dvb_adapter, DRIVER_NAME,
THIS_MODULE, &pdev->dev, adapter_nr);
if (ret < 0)
- goto err_i2c_del_adapter;
+ goto err_i2c_del_adapters;
dvb_adapter = &dev->dvb_adapter;
@@ -991,6 +1169,8 @@
dvb_dmx_release(dvbdemux);
err_dvb_unregister_adapter:
dvb_unregister_adapter(dvb_adapter);
+err_i2c_del_adapters:
+ i2c_del_adapter(&dev->i2c_bb_adap);
err_i2c_del_adapter:
i2c_del_adapter(&dev->i2c_adap);
err_dm1105_hw_exit:
