From: Martin Fuzzey martin.fuzzey@flowbird.group
Some PMICs (such as the DA9063) have non-contiguous register maps. Attempting to read the non implemented registers returns an error rather than a dummy value which causes 'pmic dump' to terminate prematurely.
Fix this by allowing the PMIC driver to return -ENODATA for such registers, which will then be displayed as '--' by pmic dump.
Use a single error code rather than any error code so that we can distinguish between a hardware failure reading the PMIC and a non implemented register known to the driver.
Signed-off-by: Martin Fuzzey martin.fuzzey@flowbird.group --- cmd/pmic.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/cmd/pmic.c b/cmd/pmic.c index e46d813..2400bfb 100644 --- a/cmd/pmic.c +++ b/cmd/pmic.c @@ -95,7 +95,7 @@ static int do_dump(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
for (reg = 0; reg < pmic_reg_count(dev); reg++) { ret = pmic_reg_read(dev, reg); - if (ret < 0) { + if (ret < 0 && ret != -ENODATA) { printf("Can't read register: %d\n", reg); return failure(ret); } @@ -103,7 +103,15 @@ static int do_dump(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (!(reg % 16)) printf("\n0x%02x: ", reg);
- printf(fmt, ret); + if (ret == -ENODATA) { + int i; + + for (i = 0; i < priv->trans_len; i++) + puts("--"); + puts(" "); + } else { + printf(fmt, ret); + } } printf("\n");