diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-i2c.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-i2c.c | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c deleted file mode 100644 index 51609d5c88ce..000000000000 --- a/drivers/media/video/cx18/cx18-i2c.c +++ /dev/null @@ -1,330 +0,0 @@ -/* - * cx18 I2C functions - * - * Derived from ivtv-i2c.c - * - * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> - * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA - */ - -#include "cx18-driver.h" -#include "cx18-io.h" -#include "cx18-cards.h" -#include "cx18-gpio.h" -#include "cx18-i2c.h" -#include "cx18-irq.h" - -#define CX18_REG_I2C_1_WR 0xf15000 -#define CX18_REG_I2C_1_RD 0xf15008 -#define CX18_REG_I2C_2_WR 0xf25100 -#define CX18_REG_I2C_2_RD 0xf25108 - -#define SETSCL_BIT 0x0001 -#define SETSDL_BIT 0x0002 -#define GETSCL_BIT 0x0004 -#define GETSDL_BIT 0x0008 - -#define CX18_CS5345_I2C_ADDR 0x4c -#define CX18_Z8F0811_IR_TX_I2C_ADDR 0x70 -#define CX18_Z8F0811_IR_RX_I2C_ADDR 0x71 - -/* This array should match the CX18_HW_ defines */ -static const u8 hw_addrs[] = { - 0, /* CX18_HW_TUNER */ - 0, /* CX18_HW_TVEEPROM */ - CX18_CS5345_I2C_ADDR, /* CX18_HW_CS5345 */ - 0, /* CX18_HW_DVB */ - 0, /* CX18_HW_418_AV */ - 0, /* CX18_HW_GPIO_MUX */ - 0, /* CX18_HW_GPIO_RESET_CTRL */ - CX18_Z8F0811_IR_TX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_TX_HAUP */ - CX18_Z8F0811_IR_RX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_RX_HAUP */ -}; - -/* This array should match the CX18_HW_ defines */ -/* This might well become a card-specific array */ -static const u8 hw_bus[] = { - 1, /* CX18_HW_TUNER */ - 0, /* CX18_HW_TVEEPROM */ - 0, /* CX18_HW_CS5345 */ - 0, /* CX18_HW_DVB */ - 0, /* CX18_HW_418_AV */ - 0, /* CX18_HW_GPIO_MUX */ - 0, /* CX18_HW_GPIO_RESET_CTRL */ - 0, /* CX18_HW_Z8F0811_IR_TX_HAUP */ - 0, /* CX18_HW_Z8F0811_IR_RX_HAUP */ -}; - -/* This array should match the CX18_HW_ defines */ -static const char * const hw_devicenames[] = { - "tuner", - "tveeprom", - "cs5345", - "cx23418_DTV", - "cx23418_AV", - "gpio_mux", - "gpio_reset_ctrl", - "ir_tx_z8f0811_haup", - "ir_rx_z8f0811_haup", -}; - -static int cx18_i2c_new_ir(struct cx18 *cx, struct i2c_adapter *adap, u32 hw, - const char *type, u8 addr) -{ - struct i2c_board_info info; - struct IR_i2c_init_data *init_data = &cx->ir_i2c_init_data; - unsigned short addr_list[2] = { addr, I2C_CLIENT_END }; - - memset(&info, 0, sizeof(struct i2c_board_info)); - strlcpy(info.type, type, I2C_NAME_SIZE); - - /* Our default information for ir-kbd-i2c.c to use */ - switch (hw) { - case CX18_HW_Z8F0811_IR_RX_HAUP: - init_data->ir_codes = RC_MAP_HAUPPAUGE; - init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; - init_data->type = RC_TYPE_RC5; - init_data->name = cx->card_name; - info.platform_data = init_data; - break; - } - - return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ? - -1 : 0; -} - -int cx18_i2c_register(struct cx18 *cx, unsigned idx) -{ - struct v4l2_subdev *sd; - int bus = hw_bus[idx]; - struct i2c_adapter *adap = &cx->i2c_adap[bus]; - const char *type = hw_devicenames[idx]; - u32 hw = 1 << idx; - - if (idx >= ARRAY_SIZE(hw_addrs)) - return -1; - - if (hw == CX18_HW_TUNER) { - /* special tuner group handling */ - sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, type, 0, cx->card_i2c->radio); - if (sd != NULL) - sd->grp_id = hw; - sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, type, 0, cx->card_i2c->demod); - if (sd != NULL) - sd->grp_id = hw; - sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, type, 0, cx->card_i2c->tv); - if (sd != NULL) - sd->grp_id = hw; - return sd != NULL ? 0 : -1; - } - - if (hw & CX18_HW_IR_ANY) - return cx18_i2c_new_ir(cx, adap, hw, type, hw_addrs[idx]); - - /* Is it not an I2C device or one we do not wish to register? */ - if (!hw_addrs[idx]) - return -1; - - /* It's an I2C device other than an analog tuner or IR chip */ - sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, type, hw_addrs[idx], - NULL); - if (sd != NULL) - sd->grp_id = hw; - return sd != NULL ? 0 : -1; -} - -/* Find the first member of the subdev group id in hw */ -struct v4l2_subdev *cx18_find_hw(struct cx18 *cx, u32 hw) -{ - struct v4l2_subdev *result = NULL; - struct v4l2_subdev *sd; - - spin_lock(&cx->v4l2_dev.lock); - v4l2_device_for_each_subdev(sd, &cx->v4l2_dev) { - if (sd->grp_id == hw) { - result = sd; - break; - } - } - spin_unlock(&cx->v4l2_dev.lock); - return result; -} - -static void cx18_setscl(void *data, int state) -{ - struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; - int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; - u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR; - u32 r = cx18_read_reg(cx, addr); - - if (state) - cx18_write_reg(cx, r | SETSCL_BIT, addr); - else - cx18_write_reg(cx, r & ~SETSCL_BIT, addr); -} - -static void cx18_setsda(void *data, int state) -{ - struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; - int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; - u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR; - u32 r = cx18_read_reg(cx, addr); - - if (state) - cx18_write_reg(cx, r | SETSDL_BIT, addr); - else - cx18_write_reg(cx, r & ~SETSDL_BIT, addr); -} - -static int cx18_getscl(void *data) -{ - struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; - int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; - u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; - - return cx18_read_reg(cx, addr) & GETSCL_BIT; -} - -static int cx18_getsda(void *data) -{ - struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx; - int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index; - u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD; - - return cx18_read_reg(cx, addr) & GETSDL_BIT; -} - -/* template for i2c-bit-algo */ -static struct i2c_adapter cx18_i2c_adap_template = { - .name = "cx18 i2c driver", - .algo = NULL, /* set by i2c-algo-bit */ - .algo_data = NULL, /* filled from template */ - .owner = THIS_MODULE, -}; - -#define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */ -#define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */ - -static struct i2c_algo_bit_data cx18_i2c_algo_template = { - .setsda = cx18_setsda, - .setscl = cx18_setscl, - .getsda = cx18_getsda, - .getscl = cx18_getscl, - .udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/ - .timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */ -}; - -/* init + register i2c adapter */ -int init_cx18_i2c(struct cx18 *cx) -{ - int i, err; - CX18_DEBUG_I2C("i2c init\n"); - - for (i = 0; i < 2; i++) { - /* Setup algorithm for adapter */ - memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template, - sizeof(struct i2c_algo_bit_data)); - cx->i2c_algo_cb_data[i].cx = cx; - cx->i2c_algo_cb_data[i].bus_index = i; - cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i]; - - /* Setup adapter */ - memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template, - sizeof(struct i2c_adapter)); - cx->i2c_adap[i].algo_data = &cx->i2c_algo[i]; - sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name), - " #%d-%d", cx->instance, i); - i2c_set_adapdata(&cx->i2c_adap[i], &cx->v4l2_dev); - cx->i2c_adap[i].dev.parent = &cx->pci_dev->dev; - } - - if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) { - /* Reset/Unreset I2C hardware block */ - /* Clock select 220MHz */ - cx18_write_reg_expect(cx, 0x10000000, 0xc71004, - 0x00000000, 0x10001000); - /* Clock Enable */ - cx18_write_reg_expect(cx, 0x10001000, 0xc71024, - 0x00001000, 0x10001000); - } - /* courtesy of Steven Toth <stoth@hauppauge.com> */ - cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); - mdelay(10); - cx18_write_reg_expect(cx, 0x00c000c0, 0xc7001c, 0x000000c0, 0x00c000c0); - mdelay(10); - cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0); - mdelay(10); - - /* Set to edge-triggered intrs. */ - cx18_write_reg(cx, 0x00c00000, 0xc730c8); - /* Clear any stale intrs */ - cx18_write_reg_expect(cx, HW2_I2C1_INT|HW2_I2C2_INT, HW2_INT_CLR_STATUS, - ~(HW2_I2C1_INT|HW2_I2C2_INT), HW2_I2C1_INT|HW2_I2C2_INT); - - /* Hw I2C1 Clock Freq ~100kHz */ - cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR); - cx18_setscl(&cx->i2c_algo_cb_data[0], 1); - cx18_setsda(&cx->i2c_algo_cb_data[0], 1); - - /* Hw I2C2 Clock Freq ~100kHz */ - cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR); - cx18_setscl(&cx->i2c_algo_cb_data[1], 1); - cx18_setsda(&cx->i2c_algo_cb_data[1], 1); - - cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, - core, reset, (u32) CX18_GPIO_RESET_I2C); - - err = i2c_bit_add_bus(&cx->i2c_adap[0]); - if (err) - goto err; - err = i2c_bit_add_bus(&cx->i2c_adap[1]); - if (err) - goto err_del_bus_0; - return 0; - - err_del_bus_0: - i2c_del_adapter(&cx->i2c_adap[0]); - err: - return err; -} - -void exit_cx18_i2c(struct cx18 *cx) -{ - int i; - CX18_DEBUG_I2C("i2c exit\n"); - cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_1_WR) | 4, - CX18_REG_I2C_1_WR); - cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_2_WR) | 4, - CX18_REG_I2C_2_WR); - - for (i = 0; i < 2; i++) { - i2c_del_adapter(&cx->i2c_adap[i]); - } -} - -/* - Hauppauge HVR1600 should have: - 32 cx24227 - 98 unknown - a0 eeprom - c2 tuner - e? zilog ir - */ |