^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* cx25840 firmware functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <media/v4l2-common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <media/drv-intf/cx25840.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "cx25840-core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Mike Isely <isely@pobox.com> - The FWSEND parameter controls the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * size of the firmware chunks sent down the I2C bus to the chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Previously this had been set to 1024 but unfortunately some I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * implementations can't transfer data in such big gulps.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Specifically, the pvrusb2 driver has a hard limit of around 60
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * bytes, due to the encapsulation there of I2C traffic into USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * messages. So we have to significantly reduce this parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define FWSEND 48
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define FWDEV(x) &((x)->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static char *firmware = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) module_param(firmware, charp, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MODULE_PARM_DESC(firmware, "Firmware image to load");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static void start_fw_load(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* DL_ADDR_LB=0 DL_ADDR_HB=0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) cx25840_write(client, 0x800, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) cx25840_write(client, 0x801, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) // DL_MAP=3 DL_AUTO_INC=0 DL_ENABLE=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) cx25840_write(client, 0x803, 0x0b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* AUTO_INC_DIS=1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) cx25840_write(client, 0x000, 0x20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static void end_fw_load(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* AUTO_INC_DIS=0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) cx25840_write(client, 0x000, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* DL_ENABLE=0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) cx25840_write(client, 0x803, 0x03);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define CX2388x_FIRMWARE "v4l-cx23885-avcore-01.fw"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define CX231xx_FIRMWARE "v4l-cx231xx-avcore-01.fw"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define CX25840_FIRMWARE "v4l-cx25840.fw"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static const char *get_fw_name(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct cx25840_state *state = to_state(i2c_get_clientdata(client));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (firmware[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (is_cx2388x(state))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return CX2388x_FIRMWARE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (is_cx231xx(state))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return CX231xx_FIRMWARE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return CX25840_FIRMWARE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int check_fw_load(struct i2c_client *client, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* DL_ADDR_HB DL_ADDR_LB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int s = cx25840_read(client, 0x801) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) s |= cx25840_read(client, 0x800);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (size != s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) v4l_err(client, "firmware %s load failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) get_fw_name(client));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) v4l_info(client, "loaded %s firmware (%d bytes)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) get_fw_name(client), size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static int fw_write(struct i2c_client *client, const u8 *data, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (i2c_master_send(client, data, size) < size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) v4l_err(client, "firmware load i2c failure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int cx25840_loadfw(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct cx25840_state *state = to_state(i2c_get_clientdata(client));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) const struct firmware *fw = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) u8 buffer[FWSEND];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) const u8 *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) const char *fwname = get_fw_name(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int size, retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int max_buf_size = FWSEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) u32 gpio_oe = 0, gpio_da = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (is_cx2388x(state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* Preserve the GPIO OE and output bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) gpio_oe = cx25840_read(client, 0x160);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) gpio_da = cx25840_read(client, 0x164);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* cx231xx cannot accept more than 16 bytes at a time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (is_cx231xx(state) && max_buf_size > 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) max_buf_size = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (request_firmware(&fw, fwname, FWDEV(client)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) v4l_err(client, "unable to open firmware %s\n", fwname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) start_fw_load(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) buffer[0] = 0x08;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) buffer[1] = 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) size = fw->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ptr = fw->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) while (size > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int len = min(max_buf_size - 2, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) memcpy(buffer + 2, ptr, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) retval = fw_write(client, buffer, len + 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) release_firmware(fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) size -= len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ptr += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) end_fw_load(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) size = fw->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) release_firmware(fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (is_cx2388x(state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /* Restore GPIO configuration after f/w load */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) cx25840_write(client, 0x160, gpio_oe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) cx25840_write(client, 0x164, gpio_da);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return check_fw_load(client, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) MODULE_FIRMWARE(CX2388x_FIRMWARE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) MODULE_FIRMWARE(CX231xx_FIRMWARE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) MODULE_FIRMWARE(CX25840_FIRMWARE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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