aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/cx25840/cx25840-firmware.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/cx25840/cx25840-firmware.c')
-rw-r--r--drivers/media/video/cx25840/cx25840-firmware.c48
1 files changed, 34 insertions, 14 deletions
diff --git a/drivers/media/video/cx25840/cx25840-firmware.c b/drivers/media/video/cx25840/cx25840-firmware.c
index 0df53b0d75d..1f483c1d0db 100644
--- a/drivers/media/video/cx25840/cx25840-firmware.c
+++ b/drivers/media/video/cx25840/cx25840-firmware.c
@@ -23,10 +23,6 @@
#include "cx25840-core.h"
-#define FWFILE "v4l-cx25840.fw"
-#define FWFILE_CX23885 "v4l-cx23885-avcore-01.fw"
-#define FWFILE_CX231XX "v4l-cx231xx-avcore-01.fw"
-
/*
* Mike Isely <isely@pobox.com> - The FWSEND parameter controls the
* size of the firmware chunks sent down the I2C bus to the chip.
@@ -40,11 +36,11 @@
#define FWDEV(x) &((x)->dev)
-static char *firmware = FWFILE;
+static char *firmware = "";
module_param(firmware, charp, 0444);
-MODULE_PARM_DESC(firmware, "Firmware image [default: " FWFILE "]");
+MODULE_PARM_DESC(firmware, "Firmware image to load");
static void start_fw_load(struct i2c_client *client)
{
@@ -65,6 +61,19 @@ static void end_fw_load(struct i2c_client *client)
cx25840_write(client, 0x803, 0x03);
}
+static const char *get_fw_name(struct i2c_client *client)
+{
+ struct cx25840_state *state = to_state(i2c_get_clientdata(client));
+
+ if (firmware[0])
+ return firmware;
+ if (state->is_cx23885)
+ return "v4l-cx23885-avcore-01.fw";
+ if (state->is_cx231xx)
+ return "v4l-cx231xx-avcore-01.fw";
+ return "v4l-cx25840.fw";
+}
+
static int check_fw_load(struct i2c_client *client, int size)
{
/* DL_ADDR_HB DL_ADDR_LB */
@@ -72,11 +81,13 @@ static int check_fw_load(struct i2c_client *client, int size)
s |= cx25840_read(client, 0x800);
if (size != s) {
- v4l_err(client, "firmware %s load failed\n", firmware);
+ v4l_err(client, "firmware %s load failed\n",
+ get_fw_name(client));
return -EINVAL;
}
- v4l_info(client, "loaded %s firmware (%d bytes)\n", firmware, size);
+ v4l_info(client, "loaded %s firmware (%d bytes)\n",
+ get_fw_name(client), size);
return 0;
}
@@ -96,21 +107,24 @@ int cx25840_loadfw(struct i2c_client *client)
const struct firmware *fw = NULL;
u8 buffer[FWSEND];
const u8 *ptr;
+ const char *fwname = get_fw_name(client);
int size, retval;
int MAX_BUF_SIZE = FWSEND;
+ u32 gpio_oe = 0, gpio_da = 0;
- if (state->is_cx23885)
- firmware = FWFILE_CX23885;
- else if (state->is_cx231xx)
- firmware = FWFILE_CX231XX;
+ if (state->is_cx23885) {
+ /* Preserve the GPIO OE and output bits */
+ gpio_oe = cx25840_read(client, 0x160);
+ gpio_da = cx25840_read(client, 0x164);
+ }
if ((state->is_cx231xx) && MAX_BUF_SIZE > 16) {
v4l_err(client, " Firmware download size changed to 16 bytes max length\n");
MAX_BUF_SIZE = 16; /* cx231xx cannot accept more than 16 bytes at a time */
}
- if (request_firmware(&fw, firmware, FWDEV(client)) != 0) {
- v4l_err(client, "unable to open firmware %s\n", firmware);
+ if (request_firmware(&fw, fwname, FWDEV(client)) != 0) {
+ v4l_err(client, "unable to open firmware %s\n", fwname);
return -EINVAL;
}
@@ -142,5 +156,11 @@ int cx25840_loadfw(struct i2c_client *client)
size = fw->size;
release_firmware(fw);
+ if (state->is_cx23885) {
+ /* Restore GPIO configuration after f/w load */
+ cx25840_write(client, 0x160, gpio_oe);
+ cx25840_write(client, 0x164, gpio_da);
+ }
+
return check_fw_load(client, size);
}