Commit graph

12 commits

Author SHA1 Message Date
Patrick Delaunay
5593333c2e pinctrl: stmfx: add information on pin configuration
Add information on pin configuration used for pinmux command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Patrick Delaunay
8d895efffe gpio: stmfx: add ops get_dir_flags
Add support of ops get_dir_flags() to read dir flags from
STMFX registers.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Patrick Delaunay
22b3fe4224 gpio: stmfx: add ops set_dir_flag
Manage the flags for GPIO configuration:
- open_drain, push_pull
- pull_up, pull_down

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Patrick Delaunay
fabb6e14c8 gpio: stmfx: add function stmfx_read_reg and stmfx_write_reg
Add the helper functions stmfx_read_reg() and stmfx_write_reg() to avoid
duplicated code for access to stmfx's register with mask.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Patrick Delaunay
067c7398d5 gpio: stmfx: rename function used to change pin configuration
Rename the two function used to change the pin configuration
from stmfx_pinctrl_.. stmfx_conf_... to clarify the function usage.

No functional change.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Patrick Delaunay
84115cd066 gpio: stmfx: move function to prepare new ops introduction
Move the functions stmfx_pinctrl_set_pupd and stmfx_pinctrl_set_type;
they can be used by the new ops get_dir_flags and set_dir_flags introduced
by next patch.

No functional change.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07 16:01:23 +02:00
Simon Glass
cd93d625fd common: Drop linux/bitops.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
c05ed00afb common: Drop linux/delay.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Patrick Delaunay
b10089233e pinctrl: stmfx: update the result type of dm_i2c_reg_read
Use int as result of dm_i2c_reg_read to avoid warning with
W=1 (warning: comparison is always false due to limited range
of data type [-Wtype-limits])

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-02-13 18:47:00 +01:00
Simon Glass
336d4615f8 dm: core: Create a new header file for 'compat' features
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.

Move the compatibility features into a separate header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-05 19:33:46 -07:00
Patrick Delaunay
abee80d789 pinctrl: stmfx: update pinconf settings
Alignment with kernel driver.

According to the following tab (coming from STMFX datasheet), updates
have to done in stmfx_pinctrl_conf_set function:

-"type" has to be set when "bias" is configured as "pull-up or pull-down"
-PIN_CONFIG_DRIVE_PUSH_PULL should only be used when gpio is configured as
 output. There is so no need to check direction.

  DIR | TYPE | PUPD | MFX GPIO configuration
  ----|------|------|---------------------------------------------------
  1   | 1    | 1    | OUTPUT open drain with internal pull-up resistor
  ----|------|------|---------------------------------------------------
  1   | 1    | 0    | OUTPUT open drain with internal pull-down resistor
  ----|------|------|---------------------------------------------------
  1   | 0    | 0/1  | OUTPUT push pull no pull
  ----|------|------|---------------------------------------------------
  0   | 1    | 1    | INPUT with internal pull-up resistor
  ----|------|------|---------------------------------------------------
  0   | 1    | 0    | INPUT with internal pull-down resistor
  ----|------|------|---------------------------------------------------
  0   | 0    | 1    | INPUT floating
  ----|------|------|---------------------------------------------------
  0   | 0    | 0    | analog (GPIO not used, default setting)

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-08-27 09:36:56 +02:00
Patrick Delaunay
8262435dd2 pinctrl: Add STMFX GPIO expander Pinctrl/GPIO driver
This patch adds pinctrl/GPIO driver for STMicroelectronics
Multi-Function eXpander (STMFX) GPIO expander.
STMFX is an I2C slave controller, offering up to 24 GPIOs.
The driver relies on UCLASS_PINCTRL and UCLASS_GPIO.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2019-04-12 16:09:13 +02:00