diff options
| author | simba.hsu | 2021-06-01 21:38:38 -0700 |
|---|---|---|
| committer | Dmitry Torokhov | 2021-09-05 19:42:43 -0700 |
| commit | d5f9c43d41effc3c884e0139ca52015e451039b1 (patch) | |
| tree | 1403135e1bcae9b8a6a16e9d8f38173b5f1f8986 /drivers | |
| parent | 58ae4004b9c4bb040958cf73986b687a5ea4d85d (diff) | |
Input: raydium_i2c_ts - read device version in bootloader mode
Add support reading device ID when controller is in bootloader mode, which
may happen if firmware update has been interrupted.
Signed-off-by: simba.hsu <simba.hsu@rad-ic.com>
Link: https://lore.kernel.org/r/20210818063644.8654-1-simba.hsu@rad-ic.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/raydium_i2c_ts.c | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index 4d2d22a86977..92c48d8e35a4 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -37,6 +37,7 @@ #define RM_CMD_BOOT_READ 0x44 /* send wait bl data ready*/ #define RM_BOOT_RDY 0xFF /* bl data ready */ +#define RM_BOOT_CMD_READHWID 0x0E /* read hwid */ /* I2C main commands */ #define RM_CMD_QUERY_BANK 0x2B @@ -290,6 +291,44 @@ static int raydium_i2c_sw_reset(struct i2c_client *client) return 0; } +static int raydium_i2c_query_ts_bootloader_info(struct raydium_data *ts) +{ + struct i2c_client *client = ts->client; + static const u8 get_hwid[] = { RM_BOOT_CMD_READHWID, + 0x10, 0xc0, 0x01, 0x00, 0x04, 0x00 }; + u8 rbuf[5] = { 0 }; + u32 hw_ver; + int error; + + error = raydium_i2c_send(client, RM_CMD_BOOT_WRT, + get_hwid, sizeof(get_hwid)); + if (error) { + dev_err(&client->dev, "WRT HWID command failed: %d\n", error); + return error; + } + + error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, rbuf, 1); + if (error) { + dev_err(&client->dev, "Ack HWID command failed: %d\n", error); + return error; + } + + error = raydium_i2c_read(client, RM_CMD_BOOT_CHK, rbuf, sizeof(rbuf)); + if (error) { + dev_err(&client->dev, "Read HWID command failed: %d (%4ph)\n", + error, rbuf + 1); + hw_ver = 0xffffffffUL; + } else { + hw_ver = get_unaligned_be32(rbuf + 1); + } + + ts->info.hw_ver = cpu_to_le32(hw_ver); + ts->info.main_ver = 0xff; + ts->info.sub_ver = 0xff; + + return error; +} + static int raydium_i2c_query_ts_info(struct raydium_data *ts) { struct i2c_client *client = ts->client; @@ -388,13 +427,10 @@ static int raydium_i2c_initialize(struct raydium_data *ts) if (error) ts->boot_mode = RAYDIUM_TS_BLDR; - if (ts->boot_mode == RAYDIUM_TS_BLDR) { - ts->info.hw_ver = cpu_to_le32(0xffffffffUL); - ts->info.main_ver = 0xff; - ts->info.sub_ver = 0xff; - } else { + if (ts->boot_mode == RAYDIUM_TS_BLDR) + raydium_i2c_query_ts_bootloader_info(ts); + else raydium_i2c_query_ts_info(ts); - } return error; } @@ -1218,7 +1254,7 @@ static SIMPLE_DEV_PM_OPS(raydium_i2c_pm_ops, raydium_i2c_suspend, raydium_i2c_resume); static const struct i2c_device_id raydium_i2c_id[] = { - { "raydium_i2c" , 0 }, + { "raydium_i2c", 0 }, { "rm32380", 0 }, { /* sentinel */ } }; |