From eaf863cd1ef55ef8c276e5dd7c277f22522a0436 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 25 Mar 2011 00:12:47 +0000 Subject: [PATCH] sim: bfin: fix clear/set/toggle GPIO handling The clear/set/toggle MMRs aren't backed by "real" data; they implicitly perform bit operations on the associated data register. So when we go to process writes to them, we need to adjust the pointer accordingly so that the actual backing data is modified. Signed-off-by: Mike Frysinger --- sim/bfin/ChangeLog | 5 +++++ sim/bfin/dv-bfin_gpio.c | 6 ++++++ 2 files changed, 11 insertions(+) diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog index c5ab9ae..d4a36ca 100644 --- a/sim/bfin/ChangeLog +++ b/sim/bfin/ChangeLog @@ -1,3 +1,8 @@ +2011-03-24 Mike Frysinger + + * dv-bfin_gpio.c (bfin_gpio_io_write_buffer): Subtract 2 from the + valuep pointer for clear MMRs, 4 for set MMRs, and 6 for toggle MMRs. + 2011-03-23 Mike Frysinger * TODO: Document some known SIC issues. diff --git a/sim/bfin/dv-bfin_gpio.c b/sim/bfin/dv-bfin_gpio.c index 50baf03..6b18a40 100644 --- a/sim/bfin/dv-bfin_gpio.c +++ b/sim/bfin/dv-bfin_gpio.c @@ -92,16 +92,22 @@ bfin_gpio_io_write_buffer (struct hw *me, const void *source, int space, case mmr_offset(clear): case mmr_offset(maska_clear): case mmr_offset(maskb_clear): + /* We want to clear the related data MMR. */ + valuep -= 2; dv_w1c_2 (valuep, value, -1); break; case mmr_offset(set): case mmr_offset(maska_set): case mmr_offset(maskb_set): + /* We want to set the related data MMR. */ + valuep -= 4; *valuep |= value; break; case mmr_offset(toggle): case mmr_offset(maska_toggle): case mmr_offset(maskb_toggle): + /* We want to toggle the related data MMR. */ + valuep -= 6; *valuep ^= value; break; default: -- 2.7.4