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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 21:23:43 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 21:42:14 +0200
commitcb7a01ac324bf2ee2c666f37ac867e4135f9785a (patch)
tree7246b915a9334d4bc823c93ba9acab65ef882678 /drivers/media/video/cx25840/cx25840-firmware.c
parent[media] reorganize the API core items (diff)
downloadlinux-cb7a01ac324bf2ee2c666f37ac867e4135f9785a.tar.xz
linux-cb7a01ac324bf2ee2c666f37ac867e4135f9785a.zip
[media] move i2c files into drivers/media/i2c
Move ancillary I2C drivers into drivers/media/i2c, in order to better organize them. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx25840/cx25840-firmware.c')
-rw-r--r--drivers/media/video/cx25840/cx25840-firmware.c175
1 files changed, 0 insertions, 175 deletions
diff --git a/drivers/media/video/cx25840/cx25840-firmware.c b/drivers/media/video/cx25840/cx25840-firmware.c
deleted file mode 100644
index b3169f94ece8..000000000000
--- a/drivers/media/video/cx25840/cx25840-firmware.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/* cx25840 firmware functions
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/firmware.h>
-#include <media/v4l2-common.h>
-#include <media/cx25840.h>
-
-#include "cx25840-core.h"
-
-/*
- * Mike Isely <isely@pobox.com> - The FWSEND parameter controls the
- * size of the firmware chunks sent down the I2C bus to the chip.
- * Previously this had been set to 1024 but unfortunately some I2C
- * implementations can't transfer data in such big gulps.
- * Specifically, the pvrusb2 driver has a hard limit of around 60
- * bytes, due to the encapsulation there of I2C traffic into USB
- * messages. So we have to significantly reduce this parameter.
- */
-#define FWSEND 48
-
-#define FWDEV(x) &((x)->dev)
-
-static char *firmware = "";
-
-module_param(firmware, charp, 0444);
-
-MODULE_PARM_DESC(firmware, "Firmware image to load");
-
-static void start_fw_load(struct i2c_client *client)
-{
- /* DL_ADDR_LB=0 DL_ADDR_HB=0 */
- cx25840_write(client, 0x800, 0x00);
- cx25840_write(client, 0x801, 0x00);
- // DL_MAP=3 DL_AUTO_INC=0 DL_ENABLE=1
- cx25840_write(client, 0x803, 0x0b);
- /* AUTO_INC_DIS=1 */
- cx25840_write(client, 0x000, 0x20);
-}
-
-static void end_fw_load(struct i2c_client *client)
-{
- /* AUTO_INC_DIS=0 */
- cx25840_write(client, 0x000, 0x00);
- /* DL_ENABLE=0 */
- cx25840_write(client, 0x803, 0x03);
-}
-
-#define CX2388x_FIRMWARE "v4l-cx23885-avcore-01.fw"
-#define CX231xx_FIRMWARE "v4l-cx231xx-avcore-01.fw"
-#define CX25840_FIRMWARE "v4l-cx25840.fw"
-
-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 (is_cx2388x(state))
- return CX2388x_FIRMWARE;
- if (is_cx231xx(state))
- return CX231xx_FIRMWARE;
- return CX25840_FIRMWARE;
-}
-
-static int check_fw_load(struct i2c_client *client, int size)
-{
- /* DL_ADDR_HB DL_ADDR_LB */
- int s = cx25840_read(client, 0x801) << 8;
- s |= cx25840_read(client, 0x800);
-
- if (size != s) {
- v4l_err(client, "firmware %s load failed\n",
- get_fw_name(client));
- return -EINVAL;
- }
-
- v4l_info(client, "loaded %s firmware (%d bytes)\n",
- get_fw_name(client), size);
- return 0;
-}
-
-static int fw_write(struct i2c_client *client, const u8 *data, int size)
-{
- if (i2c_master_send(client, data, size) < size) {
- v4l_err(client, "firmware load i2c failure\n");
- return -ENOSYS;
- }
-
- return 0;
-}
-
-int cx25840_loadfw(struct i2c_client *client)
-{
- struct cx25840_state *state = to_state(i2c_get_clientdata(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 (is_cx2388x(state)) {
- /* Preserve the GPIO OE and output bits */
- gpio_oe = cx25840_read(client, 0x160);
- gpio_da = cx25840_read(client, 0x164);
- }
-
- if (is_cx231xx(state) && 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, fwname, FWDEV(client)) != 0) {
- v4l_err(client, "unable to open firmware %s\n", fwname);
- return -EINVAL;
- }
-
- start_fw_load(client);
-
- buffer[0] = 0x08;
- buffer[1] = 0x02;
-
- size = fw->size;
- ptr = fw->data;
- while (size > 0) {
- int len = min(MAX_BUF_SIZE - 2, size);
-
- memcpy(buffer + 2, ptr, len);
-
- retval = fw_write(client, buffer, len + 2);
-
- if (retval < 0) {
- release_firmware(fw);
- return retval;
- }
-
- size -= len;
- ptr += len;
- }
-
- end_fw_load(client);
-
- size = fw->size;
- release_firmware(fw);
-
- if (is_cx2388x(state)) {
- /* 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);
-}
-
-MODULE_FIRMWARE(CX2388x_FIRMWARE);
-MODULE_FIRMWARE(CX231xx_FIRMWARE);
-MODULE_FIRMWARE(CX25840_FIRMWARE);
-