diff options
Diffstat (limited to 'drivers/media/dvb/frontends/dibx000_common.c')
| -rw-r--r-- | drivers/media/dvb/frontends/dibx000_common.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/drivers/media/dvb/frontends/dibx000_common.c b/drivers/media/dvb/frontends/dibx000_common.c deleted file mode 100644 index a4991026254..00000000000 --- a/drivers/media/dvb/frontends/dibx000_common.c +++ /dev/null @@ -1,187 +0,0 @@ -#include <linux/i2c.h> - -#include "dibx000_common.h" - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); - -#define dprintk(args...) do { if (debug) { printk(KERN_DEBUG "DiBX000: "); printk(args); printk("\n"); } } while (0) - -static int dibx000_write_word(struct dibx000_i2c_master *mst, u16 reg, u16 val) -{ - u8 b[4] = { - (reg >> 8) & 0xff, reg & 0xff, - (val >> 8) & 0xff, val & 0xff, - }; - struct i2c_msg msg = { - .addr = mst->i2c_addr,.flags = 0,.buf = b,.len = 4 - }; - return i2c_transfer(mst->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0; -} - - -static int dibx000_i2c_select_interface(struct dibx000_i2c_master *mst, - enum dibx000_i2c_interface intf) -{ - if (mst->device_rev > DIB3000MC && mst->selected_interface != intf) { - dprintk("selecting interface: %d", intf); - mst->selected_interface = intf; - return dibx000_write_word(mst, mst->base_reg + 4, intf); - } - return 0; -} - -static int dibx000_i2c_gate_ctrl(struct dibx000_i2c_master *mst, u8 tx[4], - u8 addr, int onoff) -{ - u16 val; - - - if (onoff) - val = addr << 8; // bit 7 = use master or not, if 0, the gate is open - else - val = 1 << 7; - - if (mst->device_rev > DIB7000) - val <<= 1; - - tx[0] = (((mst->base_reg + 1) >> 8) & 0xff); - tx[1] = ((mst->base_reg + 1) & 0xff); - tx[2] = val >> 8; - tx[3] = val & 0xff; - - return 0; -} - -static u32 dibx000_i2c_func(struct i2c_adapter *adapter) -{ - return I2C_FUNC_I2C; -} - -static int dibx000_i2c_gated_tuner_xfer(struct i2c_adapter *i2c_adap, - struct i2c_msg msg[], int num) -{ - struct dibx000_i2c_master *mst = i2c_get_adapdata(i2c_adap); - struct i2c_msg m[2 + num]; - u8 tx_open[4], tx_close[4]; - - memset(m, 0, sizeof(struct i2c_msg) * (2 + num)); - - dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_TUNER); - - dibx000_i2c_gate_ctrl(mst, tx_open, msg[0].addr, 1); - m[0].addr = mst->i2c_addr; - m[0].buf = tx_open; - m[0].len = 4; - - memcpy(&m[1], msg, sizeof(struct i2c_msg) * num); - - dibx000_i2c_gate_ctrl(mst, tx_close, 0, 0); - m[num + 1].addr = mst->i2c_addr; - m[num + 1].buf = tx_close; - m[num + 1].len = 4; - - return i2c_transfer(mst->i2c_adap, m, 2 + num) == 2 + num ? num : -EIO; -} - -static struct i2c_algorithm dibx000_i2c_gated_tuner_algo = { - .master_xfer = dibx000_i2c_gated_tuner_xfer, - .functionality = dibx000_i2c_func, -}; - -struct i2c_adapter *dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst, - enum dibx000_i2c_interface intf, - int gating) -{ - struct i2c_adapter *i2c = NULL; - - switch (intf) { - case DIBX000_I2C_INTERFACE_TUNER: - if (gating) - i2c = &mst->gated_tuner_i2c_adap; - break; - default: - printk(KERN_ERR "DiBX000: incorrect I2C interface selected\n"); - break; - } - - return i2c; -} - -EXPORT_SYMBOL(dibx000_get_i2c_adapter); - -void dibx000_reset_i2c_master(struct dibx000_i2c_master *mst) -{ - /* initialize the i2c-master by closing the gate */ - u8 tx[4]; - struct i2c_msg m = {.addr = mst->i2c_addr,.buf = tx,.len = 4 }; - - dibx000_i2c_gate_ctrl(mst, tx, 0, 0); - i2c_transfer(mst->i2c_adap, &m, 1); - mst->selected_interface = 0xff; // the first time force a select of the I2C - dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_TUNER); -} - -EXPORT_SYMBOL(dibx000_reset_i2c_master); - -static int i2c_adapter_init(struct i2c_adapter *i2c_adap, - struct i2c_algorithm *algo, const char *name, - struct dibx000_i2c_master *mst) -{ - strncpy(i2c_adap->name, name, sizeof(i2c_adap->name)); - i2c_adap->algo_data = NULL; - i2c_set_adapdata(i2c_adap, mst); - if (i2c_add_adapter(i2c_adap) < 0) - return -ENODEV; - return 0; -} - -int dibx000_init_i2c_master(struct dibx000_i2c_master *mst, u16 device_rev, - struct i2c_adapter *i2c_adap, u8 i2c_addr) -{ - u8 tx[4]; - struct i2c_msg m = {.addr = i2c_addr >> 1,.buf = tx,.len = 4 }; - - mst->device_rev = device_rev; - mst->i2c_adap = i2c_adap; - mst->i2c_addr = i2c_addr >> 1; - - if (device_rev == DIB7000P || device_rev == DIB8000) - mst->base_reg = 1024; - else - mst->base_reg = 768; - - if (i2c_adapter_init - (&mst->gated_tuner_i2c_adap, &dibx000_i2c_gated_tuner_algo, - "DiBX000 tuner I2C bus", mst) != 0) - printk(KERN_ERR - "DiBX000: could not initialize the tuner i2c_adapter\n"); - - /* initialize the i2c-master by closing the gate */ - dibx000_i2c_gate_ctrl(mst, tx, 0, 0); - - return i2c_transfer(i2c_adap, &m, 1) == 1; -} - -EXPORT_SYMBOL(dibx000_init_i2c_master); - -void dibx000_exit_i2c_master(struct dibx000_i2c_master *mst) -{ - i2c_del_adapter(&mst->gated_tuner_i2c_adap); -} -EXPORT_SYMBOL(dibx000_exit_i2c_master); - - -u32 systime(void) -{ - struct timespec t; - - t = current_kernel_time(); - return (t.tv_sec * 10000) + (t.tv_nsec / 100000); -} -EXPORT_SYMBOL(systime); - -MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>"); -MODULE_DESCRIPTION("Common function the DiBcom demodulator family"); -MODULE_LICENSE("GPL"); |