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authorAndy Walls <awalls@radix.net>2009-02-20 23:52:13 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:43:01 -0300
commitff2a20018094c593a35f4887bbdabf8926ddb6e6 (patch)
treee6c89f8e06e6006035420ea20a6754dd4ca7e89c /drivers/media/video/cx18/cx18-i2c.c
parentfa3e70360c86480acbaa54c9791e843196327a66 (diff)
V4L/DVB (10758): cx18: Convert I2C devices to v4l2_subdevices
This is a major perturbation to cx18 I2C device handling to convert it to the v4l2_device/subdeivce framework. This change breaks GPIO audio multiplexer control for the time being. It will be fixed in a coming change. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-i2c.c')
-rw-r--r--drivers/media/video/cx18/cx18-i2c.c284
1 files changed, 72 insertions, 212 deletions
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c
index db7b55281f50..6357dc44ab5b 100644
--- a/drivers/media/video/cx18/cx18-i2c.c
+++ b/drivers/media/video/cx18/cx18-i2c.c
@@ -43,31 +43,34 @@
#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 */
+ 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_AUDIO_MUX */
};
/* 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 */
+ 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_AUDIO_MUX */
+};
+
+/* This array should match the CX18_HW_ defines */
+static const char * const hw_modules[] = {
+ "tuner", /* CX18_HW_TUNER */
+ NULL, /* CX18_HW_TVEEPROM */
+ "cs5345", /* CX18_HW_CS5345 */
+ NULL, /* CX18_HW_DVB */
+ NULL, /* CX18_HW_418_AV */
+ NULL, /* CX18_HW_GPIO_AUDIO_MUX */
};
/* This array should match the CX18_HW_ defines */
@@ -75,83 +78,66 @@ static const char * const hw_devicenames[] = {
"tuner",
"tveeprom",
"cs5345",
- "gpio",
- "cx23418",
+ "cx23418_DTV",
+ "cx23418_AV",
+ "gpio_audio_mux",
};
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)
+ struct v4l2_subdev *sd;
+ int bus = hw_bus[idx];
+ struct i2c_adapter *adap = &cx->i2c_adap[bus];
+ const char *mod = hw_modules[idx];
+ const char *type = hw_devicenames[idx];
+ u32 hw = 1 << idx;
+
+ if (idx >= ARRAY_SIZE(hw_addrs))
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;
+ if (hw == CX18_HW_TUNER) {
+ /* special tuner group handling */
+ sd = v4l2_i2c_new_probed_subdev(adap, mod, type,
+ cx->card_i2c->radio);
+ if (sd != NULL)
+ sd->grp_id = hw;
+ sd = v4l2_i2c_new_probed_subdev(adap, mod, type,
+ cx->card_i2c->demod);
+ if (sd != NULL)
+ sd->grp_id = hw;
+ sd = v4l2_i2c_new_probed_subdev(adap, mod, type,
+ cx->card_i2c->tv);
+ if (sd != NULL)
+ sd->grp_id = hw;
+ return sd != NULL ? 0 : -1;
}
- /* 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;
-}
+ /* Is it not an I2C device or one we do not wish to register? */
+ if (!hw_addrs[idx])
+ return -1;
-static int attach_inform(struct i2c_client *client)
-{
- return 0;
+ /* It's an I2C device other than an analog tuner */
+ sd = v4l2_i2c_new_subdev(adap, mod, type, hw_addrs[idx]);
+ if (sd != NULL)
+ sd->grp_id = hw;
+ return sd != NULL ? 0 : -1;
}
-static int detach_inform(struct i2c_client *client)
+/* Find the first member of the subdev group id in hw */
+struct v4l2_subdev *cx18_find_hw(struct cx18 *cx, u32 hw)
{
- int i;
- struct cx18 *cx = (struct cx18 *)i2c_get_adapdata(client->adapter);
+ struct v4l2_subdev *result = NULL;
+ struct v4l2_subdev *sd;
- 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;
+ spin_lock(&cx->v4l2_dev.lock);
+ v4l2_device_for_each_subdev(sd, &cx->v4l2_dev) {
+ if (sd->grp_id == hw) {
+ result = sd;
break;
}
}
- CX18_DEBUG_I2C("i2c detach [client=%s,%s]\n",
- client->name, (i < I2C_CLIENTS_MAX) ? "ok" : "failed");
-
- return 0;
+ spin_unlock(&cx->v4l2_dev.lock);
+ return result;
}
static void cx18_setscl(void *data, int state)
@@ -204,8 +190,6 @@ static struct i2c_adapter cx18_i2c_adap_template = {
.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,
};
@@ -221,151 +205,27 @@ static struct i2c_algo_bit_data cx18_i2c_algo_template = {
.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 v4l2_subdev_command(cx->sd_av, 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;
- }
- v4l2_subdev_command(cx->sd_av, 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));
+ /* 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];
- cx->i2c_adap[i].algo_data = &cx->i2c_algo[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);
-
- 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];
+ i2c_set_adapdata(&cx->i2c_adap[i], &cx->v4l2_dev);
cx->i2c_adap[i].dev.parent = &cx->pci_dev->dev;
}