forked from Minki/linux
bcb63314e2
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.
The patch has been created with the following command without manual edits:
git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
171 lines
4.2 KiB
C
171 lines
4.2 KiB
C
/* cx25840 firmware functions
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/firmware.h>
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#include <media/v4l2-common.h>
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#include <media/drv-intf/cx25840.h>
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#include "cx25840-core.h"
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/*
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* Mike Isely <isely@pobox.com> - The FWSEND parameter controls the
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* size of the firmware chunks sent down the I2C bus to the chip.
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* Previously this had been set to 1024 but unfortunately some I2C
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* implementations can't transfer data in such big gulps.
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* Specifically, the pvrusb2 driver has a hard limit of around 60
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* bytes, due to the encapsulation there of I2C traffic into USB
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* messages. So we have to significantly reduce this parameter.
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*/
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#define FWSEND 48
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#define FWDEV(x) &((x)->dev)
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static char *firmware = "";
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module_param(firmware, charp, 0444);
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MODULE_PARM_DESC(firmware, "Firmware image to load");
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static void start_fw_load(struct i2c_client *client)
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{
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/* DL_ADDR_LB=0 DL_ADDR_HB=0 */
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cx25840_write(client, 0x800, 0x00);
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cx25840_write(client, 0x801, 0x00);
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// DL_MAP=3 DL_AUTO_INC=0 DL_ENABLE=1
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cx25840_write(client, 0x803, 0x0b);
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/* AUTO_INC_DIS=1 */
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cx25840_write(client, 0x000, 0x20);
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}
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static void end_fw_load(struct i2c_client *client)
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{
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/* AUTO_INC_DIS=0 */
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cx25840_write(client, 0x000, 0x00);
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/* DL_ENABLE=0 */
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cx25840_write(client, 0x803, 0x03);
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}
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#define CX2388x_FIRMWARE "v4l-cx23885-avcore-01.fw"
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#define CX231xx_FIRMWARE "v4l-cx231xx-avcore-01.fw"
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#define CX25840_FIRMWARE "v4l-cx25840.fw"
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static const char *get_fw_name(struct i2c_client *client)
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{
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struct cx25840_state *state = to_state(i2c_get_clientdata(client));
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if (firmware[0])
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return firmware;
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if (is_cx2388x(state))
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return CX2388x_FIRMWARE;
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if (is_cx231xx(state))
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return CX231xx_FIRMWARE;
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return CX25840_FIRMWARE;
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}
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static int check_fw_load(struct i2c_client *client, int size)
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{
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/* DL_ADDR_HB DL_ADDR_LB */
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int s = cx25840_read(client, 0x801) << 8;
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s |= cx25840_read(client, 0x800);
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if (size != s) {
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v4l_err(client, "firmware %s load failed\n",
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get_fw_name(client));
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return -EINVAL;
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}
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v4l_info(client, "loaded %s firmware (%d bytes)\n",
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get_fw_name(client), size);
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return 0;
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}
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static int fw_write(struct i2c_client *client, const u8 *data, int size)
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{
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if (i2c_master_send(client, data, size) < size) {
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v4l_err(client, "firmware load i2c failure\n");
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return -ENOSYS;
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}
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return 0;
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}
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int cx25840_loadfw(struct i2c_client *client)
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{
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struct cx25840_state *state = to_state(i2c_get_clientdata(client));
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const struct firmware *fw = NULL;
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u8 buffer[FWSEND];
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const u8 *ptr;
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const char *fwname = get_fw_name(client);
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int size, retval;
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int max_buf_size = FWSEND;
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u32 gpio_oe = 0, gpio_da = 0;
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if (is_cx2388x(state)) {
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/* Preserve the GPIO OE and output bits */
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gpio_oe = cx25840_read(client, 0x160);
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gpio_da = cx25840_read(client, 0x164);
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}
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/* cx231xx cannot accept more than 16 bytes at a time */
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if (is_cx231xx(state) && max_buf_size > 16)
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max_buf_size = 16;
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if (request_firmware(&fw, fwname, FWDEV(client)) != 0) {
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v4l_err(client, "unable to open firmware %s\n", fwname);
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return -EINVAL;
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}
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start_fw_load(client);
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buffer[0] = 0x08;
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buffer[1] = 0x02;
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size = fw->size;
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ptr = fw->data;
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while (size > 0) {
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int len = min(max_buf_size - 2, size);
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memcpy(buffer + 2, ptr, len);
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retval = fw_write(client, buffer, len + 2);
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if (retval < 0) {
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release_firmware(fw);
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return retval;
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}
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size -= len;
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ptr += len;
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}
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end_fw_load(client);
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size = fw->size;
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release_firmware(fw);
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if (is_cx2388x(state)) {
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/* Restore GPIO configuration after f/w load */
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cx25840_write(client, 0x160, gpio_oe);
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cx25840_write(client, 0x164, gpio_da);
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}
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return check_fw_load(client, size);
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}
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MODULE_FIRMWARE(CX2388x_FIRMWARE);
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MODULE_FIRMWARE(CX231xx_FIRMWARE);
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MODULE_FIRMWARE(CX25840_FIRMWARE);
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