aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/cx18/cx18-i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/cx18/cx18-i2c.c')
-rw-r--r--drivers/media/video/cx18/cx18-i2c.c432
1 files changed, 0 insertions, 432 deletions
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c
deleted file mode 100644
index 83e1c633312..00000000000
--- a/drivers/media/video/cx18/cx18-i2c.c
+++ /dev/null
@@ -1,432 +0,0 @@
-/*
- * cx18 I2C functions
- *
- * Derived from ivtv-i2c.c
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- * Copyright (C) 2008 Andy Walls <awalls@radix.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-av-core.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
-
-/* This array should match the CX18_HW_ defines */
-static const u8 hw_driverids[] = {
- I2C_DRIVERID_TUNER,
- I2C_DRIVERID_TVEEPROM,
- I2C_DRIVERID_CS5345,
- 0, /* CX18_HW_GPIO dummy driver ID */
- 0 /* CX18_HW_CX23418 dummy driver ID */
-};
-
-/* This array should match the CX18_HW_ defines */
-static const u8 hw_addrs[] = {
- 0,
- 0,
- CX18_CS5345_I2C_ADDR,
- 0, /* CX18_HW_GPIO dummy driver ID */
- 0, /* CX18_HW_CX23418 dummy driver ID */
-};
-
-/* This array should match the CX18_HW_ defines */
-/* This might well become a card-specific array */
-static const u8 hw_bus[] = {
- 0,
- 0,
- 0,
- 0, /* CX18_HW_GPIO dummy driver ID */
- 0, /* CX18_HW_CX23418 dummy driver ID */
-};
-
-/* This array should match the CX18_HW_ defines */
-static const char * const hw_devicenames[] = {
- "tuner",
- "tveeprom",
- "cs5345",
- "gpio",
- "cx23418",
-};
-
-int cx18_i2c_register(struct cx18 *cx, unsigned idx)
-{
- struct i2c_board_info info;
- struct i2c_client *c;
- u8 id, bus;
- int i;
-
- CX18_DEBUG_I2C("i2c client register\n");
- if (idx >= ARRAY_SIZE(hw_driverids) || hw_driverids[idx] == 0)
- return -1;
- id = hw_driverids[idx];
- bus = hw_bus[idx];
- memset(&info, 0, sizeof(info));
- strlcpy(info.type, hw_devicenames[idx], sizeof(info.type));
- info.addr = hw_addrs[idx];
- for (i = 0; i < I2C_CLIENTS_MAX; i++)
- if (cx->i2c_clients[i] == NULL)
- break;
-
- if (i == I2C_CLIENTS_MAX) {
- CX18_ERR("insufficient room for new I2C client!\n");
- return -ENOMEM;
- }
-
- if (id != I2C_DRIVERID_TUNER) {
- c = i2c_new_device(&cx->i2c_adap[bus], &info);
- if (c->driver == NULL)
- i2c_unregister_device(c);
- else
- cx->i2c_clients[i] = c;
- return cx->i2c_clients[i] ? 0 : -ENODEV;
- }
-
- /* special tuner handling */
- c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->radio);
- if (c && c->driver == NULL)
- i2c_unregister_device(c);
- else if (c)
- cx->i2c_clients[i++] = c;
- c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->demod);
- if (c && c->driver == NULL)
- i2c_unregister_device(c);
- else if (c)
- cx->i2c_clients[i++] = c;
- c = i2c_new_probed_device(&cx->i2c_adap[1], &info, cx->card_i2c->tv);
- if (c && c->driver == NULL)
- i2c_unregister_device(c);
- else if (c)
- cx->i2c_clients[i++] = c;
- return 0;
-}
-
-static int attach_inform(struct i2c_client *client)
-{
- return 0;
-}
-
-static int detach_inform(struct i2c_client *client)
-{
- int i;
- struct cx18 *cx = (struct cx18 *)i2c_get_adapdata(client->adapter);
-
- CX18_DEBUG_I2C("i2c client detach\n");
- for (i = 0; i < I2C_CLIENTS_MAX; i++) {
- if (cx->i2c_clients[i] == client) {
- cx->i2c_clients[i] = NULL;
- break;
- }
- }
- CX18_DEBUG_I2C("i2c detach [client=%s,%s]\n",
- client->name, (i < I2C_CLIENTS_MAX) ? "ok" : "failed");
-
- return 0;
-}
-
-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",
- .id = I2C_HW_B_CX2341X,
- .algo = NULL, /* set by i2c-algo-bit */
- .algo_data = NULL, /* filled from template */
- .client_register = attach_inform,
- .client_unregister = detach_inform,
- .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 */
-};
-
-static struct i2c_client cx18_i2c_client_template = {
- .name = "cx18 internal",
-};
-
-int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg)
-{
- struct i2c_client *client;
- int retval;
- int i;
-
- CX18_DEBUG_I2C("call_i2c_client addr=%02x\n", addr);
- for (i = 0; i < I2C_CLIENTS_MAX; i++) {
- client = cx->i2c_clients[i];
- if (client == NULL || client->driver == NULL ||
- client->driver->command == NULL)
- continue;
- if (addr == client->addr) {
- retval = client->driver->command(client, cmd, arg);
- return retval;
- }
- }
- if (cmd != VIDIOC_DBG_G_CHIP_IDENT)
- CX18_ERR("i2c addr 0x%02x not found for cmd 0x%x!\n",
- addr, cmd);
- return -ENODEV;
-}
-
-/* Find the i2c device based on the driver ID and return
- its i2c address or -ENODEV if no matching device was found. */
-static int cx18_i2c_id_addr(struct cx18 *cx, u32 id)
-{
- struct i2c_client *client;
- int retval = -ENODEV;
- int i;
-
- for (i = 0; i < I2C_CLIENTS_MAX; i++) {
- client = cx->i2c_clients[i];
- if (client == NULL || client->driver == NULL)
- continue;
- if (id == client->driver->id) {
- retval = client->addr;
- break;
- }
- }
- return retval;
-}
-
-/* Find the i2c device name matching the CX18_HW_ flag */
-static const char *cx18_i2c_hw_name(u32 hw)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(hw_driverids); i++)
- if (1 << i == hw)
- return hw_devicenames[i];
- return "unknown device";
-}
-
-/* Find the i2c device matching the CX18_HW_ flag and return
- its i2c address or -ENODEV if no matching device was found. */
-int cx18_i2c_hw_addr(struct cx18 *cx, u32 hw)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(hw_driverids); i++)
- if (1 << i == hw)
- return cx18_i2c_id_addr(cx, hw_driverids[i]);
- return -ENODEV;
-}
-
-/* Calls i2c device based on CX18_HW_ flag. If hw == 0, then do nothing.
- If hw == CX18_HW_GPIO then call the gpio handler. */
-int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg)
-{
- int addr;
-
- if (hw == 0)
- return 0;
-
- if (hw == CX18_HW_GPIO)
- return cx18_gpio(cx, cmd, arg);
-
- if (hw == CX18_HW_CX23418)
- return cx18_av_cmd(cx, cmd, arg);
-
- addr = cx18_i2c_hw_addr(cx, hw);
- if (addr < 0) {
- CX18_ERR("i2c hardware 0x%08x (%s) not found for cmd 0x%x!\n",
- hw, cx18_i2c_hw_name(hw), cmd);
- return addr;
- }
- return cx18_call_i2c_client(cx, addr, cmd, arg);
-}
-
-/* broadcast cmd for all I2C clients and for the gpio subsystem */
-void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg)
-{
- if (cx->i2c_adap[0].algo == NULL || cx->i2c_adap[1].algo == NULL) {
- CX18_ERR("adapter is not set\n");
- return;
- }
- cx18_av_cmd(cx, cmd, arg);
- i2c_clients_command(&cx->i2c_adap[0], cmd, arg);
- i2c_clients_command(&cx->i2c_adap[1], cmd, arg);
- if (cx->hw_flags & CX18_HW_GPIO)
- cx18_gpio(cx, cmd, arg);
-}
-
-/* init + register i2c algo-bit adapter */
-int init_cx18_i2c(struct cx18 *cx)
-{
- int i;
- CX18_DEBUG_I2C("i2c init\n");
-
- /* Sanity checks for the I2C hardware arrays. They must be the
- * same size and GPIO/CX23418 must be the last entries.
- */
- if (ARRAY_SIZE(hw_driverids) != ARRAY_SIZE(hw_addrs) ||
- ARRAY_SIZE(hw_devicenames) != ARRAY_SIZE(hw_addrs) ||
- CX18_HW_GPIO != (1 << (ARRAY_SIZE(hw_addrs) - 2)) ||
- CX18_HW_CX23418 != (1 << (ARRAY_SIZE(hw_addrs) - 1)) ||
- hw_driverids[ARRAY_SIZE(hw_addrs) - 1]) {
- CX18_ERR("Mismatched I2C hardware arrays\n");
- return -ENODEV;
- }
-
- for (i = 0; i < 2; i++) {
- memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template,
- sizeof(struct i2c_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];
- 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->num, i);
- i2c_set_adapdata(&cx->i2c_adap[i], cx);
-
- memcpy(&cx->i2c_client[i], &cx18_i2c_client_template,
- sizeof(struct i2c_client));
- sprintf(cx->i2c_client[i].name +
- strlen(cx->i2c_client[i].name), "%d", i);
- cx->i2c_client[i].adapter = &cx->i2c_adap[i];
- cx->i2c_adap[i].dev.parent = &cx->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_reset_i2c_slaves_gpio(cx);
-
- return i2c_bit_add_bus(&cx->i2c_adap[0]) ||
- i2c_bit_add_bus(&cx->i2c_adap[1]);
-}
-
-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
- */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-14 07:32:20 +0000