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authorPatrice Chotard <patrice.chotard@st.com>2018-10-24 14:10:18 +0200
committerTom Rini <trini@konsulko.com>2018-11-16 16:51:56 -0500
commit8f651ca60ba1e574c2b836195ea882c01143922f (patch)
treefeb9d494eed4d15a942c06dcdef3fa39b8790212 /drivers/spi
parentd5a8313905f54ebdf128ac428c3cf58a2ebcbda2 (diff)
pinctrl: stm32: Add get_pins_count() ops
Add get_pins_count ops to obtain the number of pins owns by a pin-controller. On STM32 SoCs bindings, each pin-controller owns several gpio banks. Each GPIO bank can own up to 16 pins. To obtain the total pins count, walk through each sub-nodes (ie GPIO banks) and sum each GPIO banks pins number. For that in probe() we build a list with each GPIO device reference found. This list will also be used with future get_pin_muxing and get_pin_name ops to speed up and optimize walk through all GPIO banks. As this code is common to all STM32 SoCs, this code is put under SPL_BUILD compilation flag to avoid to increase SPL code size for STM32F7 which is limited to 32Ko. Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/spi')
0 files changed, 0 insertions, 0 deletions