Re: [PATCH] Input: raydium_i2c_ts - read device version in bootloader mode
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From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2021-09-06 02:56:34
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On Wed, Aug 18, 2021 at 02:36:44PM +0800, simba.hsu wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- drivers/input/touchscreen/raydium_i2c_ts.c | 52 ++++++++++++++++++---- 1 file changed, 44 insertions(+), 8 deletions(-)diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index 4d2d22a86977..d3f8cc3285a2 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c@@ -36,7 +36,8 @@ #define RM_CMD_BOOT_CHK 0x33 /* send data check */ #define RM_CMD_BOOT_READ 0x44 /* send wait bl data ready*/ -#define RM_BOOT_RDY 0xFF /* 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@@ -155,6 +156,7 @@ static int raydium_i2c_xfer(struct i2c_client *client, u32 addr, * sent first. Else, skip the header i.e. xfer[0]. */ int xfer_start_idx = (addr > 0xff) ? 0 : 1; + xfer_count -= xfer_start_idx;
I dropped this unrelated chunk, made couple of cosmetic changes and applied, thank you. -- Dmitry