Commit graph

68380 commits

Author SHA1 Message Date
Patrick Delaunay
28c6ba861c video: stm32_ltdc: Convert to use APIs which support live DT
Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Yannick Fertré <yannick.fertre@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 15:05:14 +02:00
Patrick Delaunay
10bccd0dd3 pinctrl: stm32: Add header with SPDX licence
Cosmetics: Add header with SPDX licence

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 15:05:14 +02:00
Patrick Delaunay
d3bfad266c pinctrl: stm32: Convert to use APIs which support live DT
Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 15:05:14 +02:00
Patrick Delaunay
cb08e84d68 gpio: stm32: check result of ofnode_phandle_args
Add test on the size of ofnode_phandle_args result to avoid access
to uninitialized elements in args[] field.

This patch avoids the issue when gpio-ranges cell size is not 3 as
expected, for example:
	gpio-ranges = <&pinctrl 0>;
instead of
	gpio-ranges = <&pinctrl 0 112 16>;

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 15:05:14 +02:00
Patrick Delaunay
15c8cbfc74 gpio: stm32: cosmetic: cleanup gpio_stm32_probe
Move the variables definition at the beggining of the function
gpio_stm32_probe().

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 15:05:14 +02:00
Patrick Delaunay
62f95af92a ARM: dts: stm32mp1: DT alignment with Linux kernel v5.9-rc4
DT alignment with Linux kernel v5.9-rc4 for the STM32MP15x soc
device tree files and the STMicroelectronics boards device tree files.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-10-02 14:56:56 +02:00
Tom Rini
7e373a1a6a Merge branch 'next' of git://git.denx.de/u-boot-usb into next
- Assorted XHCI improvements
2020-10-01 14:52:56 -04:00
Tom Rini
f352c51f57 Revert "net: smc911x: Automatically Update ethaddr with MAC"
Upon further discussion on the mailing list, we should not get in the
situation where the generic code path to set ethaddr/etc correctly does
not work.  Revert this until someone can further debug the smc911x
driver regarding this issue.

This reverts commit 387cbf096e.

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-10-01 14:51:58 -04:00
Lad Prabhakar
e15e817f3e usb: xhci-rcar: Add support for R8A774A1 SoC
The R8A774A1 is compatible with the generic rcar-gen3-xhci controller.
This patch adds the compatibility flag, to support the xHCI controller.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
a6837a0370 usb: xhci: convert to readx_poll_sleep_timeout()
Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
23a54ccfb6 usb: xhci: use macros with parameter to fill ep_info2
Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
bf58cf9ab1 usb: xhci: convert to TRB_TX_TYPE()
Use TRB_TX_TYPE() instead of (TRB_DATA_OUT/IN << TRB_TX_TYPE_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
4312638eaf usb: xhci: convert to TRB_LEN() and TRB_INTR_TARGET()
For normal TRB fields:
use TRB_LEN(x) instead of ((x) & TRB_LEN_MASK);
and use TRB_INTR_TARGET(x) instead of
(((x) & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
a826d76f2b usb: xhci: convert to TRB_TYPE()
Use TRB_TYPE(p) instead of ((p) << TRB_TYPE_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
86d1fa17fb usb: xhci: convert to HCS_MAX_PORTS()
Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
740820519c usb: xhci: add quirks flag to support MediaTek xHCI 0.96
There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
   to minimize the scheduling effort for synchronous and
   interrupt endpoints. The parameters are put into reserved
   DWs of slot context and endpoint context.
2. Its TDS in  Normal TRB defines a number of packets that
   remains to be transferred for a TD after processing all
   Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
e3ea481bee usb: xhci: create one unified function to calculate TRB TD remainder
xhci versions 1.0 and later report the untransferred data remaining in a
TD a bit differently than older hosts.

We used to have separate functions for these, and needed to check host
version before calling the right function.

Now Mediatek host has an additional quirk on how it uses the TD Size
field for remaining data. To prevent yet another function for calculating
remainder we instead want to make one quirk friendly unified function.

Porting from the Linux:
c840d6ce772d("xhci: create one unified function to calculate TRB TD remainder.")
124c39371114("xhci: use boolean to indicate last trb in td remainder calculation")

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Chunfeng Yun
719d7d8df4 usb: xhci: add a member hci_version in xhci_ctrl struct
Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-01 19:43:05 +02:00
Tom Rini
b084d8596d Merge branch 'next' of git://git.denx.de/u-boot-sh into next 2020-10-01 10:29:39 -04:00
Tom Rini
26acc6395f Merge branch '2020-09-30-assorted-network-improvements' into next
- Generic UDP framework
- TFTP fixes
- dwc_eth_qos, smc911x, smc911x and mscc phy fixes
2020-10-01 09:46:10 -04:00
Philippe Reynes
912ece4c3d sntp: use udp framework
This commits update the support of sntp to use
the framework udp. This change allows to remove
all the reference to sntp in the main network
file net/net.c.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:55:03 -04:00
Philippe Reynes
6b981a224e sandbox: enable support of generic udp protocol
This commit enable the support of the generic udp protocol.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:55:03 -04:00
Philippe Reynes
b43ea1bf18 net: add a generic udp protocol
This commit adds a generic udp protocol framework in the
network loop. So protocol based on udp may be implemented
without modifying the network loop (for example custom
wait magic packet).

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:55:03 -04:00
Patrick Delaunay
cafaa301c9 net: dwc_eth_qos: Convert to use APIs which support live DT
Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-09-30 16:48:18 -04:00
Srinath Mannam
3151fdd7f4 phy: add support for stingray PAXB PHY controller
Add support for stingray PAXB PHY controller driver.
This driver supports maximum 8 PAXB phys using pipemux data.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2020-09-30 16:48:18 -04:00
Heinrich Schuchardt
ad8959138f net: use log_err() for 'No ethernet found' message
Write the 'No ethernet found' message via the log drivers. This allows
suppressing it during output via the syslog driver.

This fixes the problem reported in:

[PATCH 0/4] log: Fix the syslog spam when running tests
https://lists.denx.de/pipermail/u-boot/2020-September/426343.html

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
f6a158b996 net: tftp: Fix load_block offset calculation
When load the last block, the "len" might not be a block size. This cause
loading the incorrect last block data.

The fix change "len" to tftp_block_size and minus one tftp_block_size
for offset calculation.

Use same offset calculation formula as in store_block().

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
ae0bdf09ca net: tftp: Fix store_block offset calculation
tftp_cur_block start with 1 for first block, but tftp_cur_block counter is
start with zero when block number is rollover. The existing code
"tftp_cur_block - 1" will cause the block number become -1 in store_block()
when tftp_cur_block is 0 when tftp_cur_block is rollover.

The fix pass in tftp_cur_block to store_block() and minus the
tftp_block_size when do the offset calculation.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
6bf46367f5 net: tftp: Fix tftp_prev_block counter update
Fixes missing update to tftp_prev_block counter before increase
tftp_cur_block counter when do the tftpput operation.

tftp_prev_block counter is used in update_block_number() function to
check whether block number (sequence number) is rollover. This bug
cause the tftpput command fail to upload a large file when block
number is greater than 16-bit (0xFFFF).

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Adam Ford
387cbf096e net: smc911x: Automatically Update ethaddr with MAC
The ethernet controller can read the MAC from EEPROM and display it,
but if ethaddr is not set, the ethernet is still unavailable.

This patch checks will automatically set the MAC address if it has
not already been set.

Signed-off-by: Adam Ford <aford173@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-09-30 16:48:18 -04:00
Thirupathaiah Annapureddy
66e036bab5 net: ftgmac100: Add support for board specific PHY interface address
ftgmac100 driver is using hard-coded PHY interface address of zero.
Each board can have different PHY interface address (phy_addr).
This commit modifies the driver to make use of board specific address
by leveraging CONFIG_PHY_ADDR.

Signed-off-by: Thirupathaiah Annapureddy <thiruan@linux.microsoft.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
2020-09-30 16:48:18 -04:00
Heiko Stuebner
d63c14cc3f net: phy: mscc: sync rx/tx delay settings with Linux on vsc85xx
The Linux kernel does set the clock delays to
- 0.2 ns (their default, and lowest, hardware value) if delays should
  not be enabled
- 2.0 ns (which causes the data to be sampled at exactly half way between
  clock transitions at 1000 Mbps) if delays should be enabled
depending on the interface mode

See https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/phy/mscc/mscc_main.c#n523

So instead of using arbitrary delay values like now, mimic this behaviour.

The behaviour is the same for all of vsc8530/8531/8540/8541 so move that
to a shared function while at it.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2020-09-30 16:48:18 -04:00
Heiko Stuebner
9a499b2bfa net: phy: mscc: make clock-output configurable on vsc85xx
The vsc8530/8531/8540/8541 phys have a configurable clock output that
can emit 25, 50 and 125 MHz rates, which in turn may be needed for
stable network connections.

This follows a similar change introduced into the Linux kernel at
  https://lore.kernel.org/netdev/20200609133140.1421109-2-heiko@sntech.de

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2020-09-30 16:48:18 -04:00
Tom Rini
097bbf1ba9 Merge branch '2020-09-30-add-new-apis' into next
- SCMI firmware support
- regmap, GPIO, reset API enhancements
2020-09-30 16:11:11 -04:00
Etienne Carriere
c0dd177a99 firmware: smci: sandbox test for SCMI reset controllers
Add tests for SCMI reset controllers. A test device driver
sandbox-scmi_devices.c is used to get reset resources, allowing further
resets manipulation.

Change sandbox-smci_agent to emulate 1 reset controller exposed through
an agent. Add DM test scmi_resets to test this reset controller.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:24 -04:00
Etienne Carriere
34d76fefb2 reset: add reset controller driver for SCMI agents
This change introduces a reset controller driver for SCMI agent devices.
When SCMI agent and SCMI reset domain drivers are enabled, SCMI agent
binds a reset controller device for each SCMI reset domain protocol
devices enabled in the FDT.

SCMI reset driver is embedded upon CONFIG_RESET_SCMI=y. If enabled,
CONFIG_SCMI_AGENT is also enabled.

SCMI Reset Domain protocol is defined in the SCMI specification [1].

Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
87d4f277d4 firmware: scmi: sandbox test for SCMI clocks
Add tests for SCMI clocks. A test device driver sandbox-scmi_devices.c
is used to get clock resources, allowing further clock manipulation.

Change sandbox-smci_agent to emulate 3 clocks exposed through 2 agents.
Add DM test scmi_clocks to test these 3 clocks.
Update DM test sandbox_scmi_agent with load/remove test sequences
factorized by {load|remove}_sandbox_scmi_test_devices() helper functions.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
6038884483 clk: add clock driver for SCMI agents
This change introduces a clock driver for SCMI agent devices. When
SCMI agent and SCMI clock drivers are enabled, SCMI agent binds a
clock device for each SCMI clock protocol devices enabled in the FDT.

SCMI clock driver is embedded upon CONFIG_CLK_SCMI=y. If enabled,
CONFIG_SCMI_AGENT is also enabled.

SCMI Clock protocol is defined in the SCMI specification [1].

Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
4e5ce7ecd3 dt-bindings: arm: SCMI bindings documentation
Dump SCMI DT bindings documentation from Linux kernel source
tree v5.8-rc1.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
1e35913a26 firmware: scmi: support Arm SMCCC transport
This change implements a SMCCC transport for SCMI exchanges. This
implementation follows the Linux kernel as references implementation
for SCMI message processing, using the SMT format for communication
channel meta-data.

Use of SMCCC transport in SCMI FDT bindings are defined in the Linux
kernel DT bindings since v5.8. SMCCC with SMT is implemented in OP-TEE
from tag 3.9.0 [2].

Links: [2] https://github.com/OP-TEE/optee_os/commit/a58c4d706d23
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
240720e905 firmware: scmi: mailbox/smt agent device
This change implements a mailbox transport using SMT format for SCMI
exchanges. This implementation follows the Linux kernel and
SCP-firmware [1] as references implementation for SCMI message
processing using SMT format for communication channel meta-data.

Use of mailboxes in SCMI FDT bindings are defined in the Linux kernel
DT bindings since v4.17.

Links: [1] https://github.com/ARM-software/SCP-firmware
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Etienne Carriere
358599efd8 firmware: add SCMI agent uclass
This change introduces SCMI agent uclass to interact with a firmware
using the SCMI protocols [1].

SCMI agent uclass currently supports a single method to request
processing of the SCMI message by an identified server. A SCMI message
is made of a byte payload associated to a protocol ID and a message ID,
all defined by the SCMI specification [1]. On return from process_msg()
method, the caller gets the service response.

SCMI agent uclass defines a post bind generic sequence for all devices.
The sequence binds all the SCMI protocols listed in the FDT for that
SCMI agent device. Currently none, but later change will introduce
protocols.

This change implements a simple sandbox device for the SCMI agent uclass.
The sandbox nicely answers SCMI_NOT_SUPPORTED to SCMI messages.
To prepare for further test support, the sandbox exposes a architecture
function for test application to read the sandbox emulated devices state.
Currently supports 2 SCMI agents, identified by an ID in the FDT device
name. The simplistic DM test does nothing yet.

SCMI agent uclass is designed for platforms that embed a SCMI server in
a firmware hosted somewhere, for example in a companion co-processor or
in the secure world of the executing processor. SCMI protocols allow an
SCMI agent to discover and access external resources as clock, reset
controllers and more. SCMI agent and server communicate following the
SCMI specification [1]. This SCMI agent implementation complies with
the DT bindings defined in the Linux kernel source tree regarding
SCMI agent description since v5.8.

Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Jean-Jacques Hiblot
0ced26a494 test: dm: Add tests for regmap managed API and regmap fields
The tests rely on a dummy driver to allocate and initialize the regmaps
and the regmap fields using the managed API. The first test checks if
the regmap config fields like width, reg_offset_shift, range specifiers,
etc work. The second test checks if regmap fields behave properly (mask
and shift are ok) by peeking into the regmap.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:23 -04:00
Pratyush Yadav
8a34d3d752 test/py: allow multi-digit index in in_tree()
When more nodes are added for a uclass the index might go into two or
more digits. This means that there are less spaces printed because they
are used up by the extra digits. Update the regular expression to allow
variable-length spacing between the class name and and index.

This was discovered when adding a simple_bus node in test.dts made
test_bind_unbind_with_uclass() fail because the index went up to 10.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
2020-09-30 11:55:23 -04:00
Jean-Jacques Hiblot
1c4db59d9b regmap: Add support for regmap fields
A regmap field is an abstraction available in Linux. It provides to access
bitfields in a regmap without having to worry about shifts and masks.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
2020-09-30 11:55:23 -04:00
Pratyush Yadav
d8babb9598 regmap: Allow devices to specify regmap range start and size in config
Some devices need to calculate the regmap base address at runtime. This
makes it impossible to use device tree to get the regmap base. Instead,
allow devices to specify it in the regmap config. This will create a
regmap with a single range that corresponds to the start and size given
by the driver.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:22 -04:00
Pratyush Yadav
0e01a7c3f4 regmap: Add regmap_init_mem_range()
Right now, the base of a regmap can only be obtained from the device
tree. This makes it impossible for devices which calculate the base at
runtime to use a regmap. An example of such a device is the Cadence
Sierra PHY.

Allow creating a regmap with one range whose start and size can be
specified by the driver based on calculations at runtime.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:22 -04:00
Pratyush Yadav
7aa5ddffe7 regmap: Allow left shifting register offset before access
Drivers can configure it to adjust the final read/write location.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:22 -04:00
Pratyush Yadav
78aaedba9f regmap: Allow specifying read/write width
Right now, regmap_read() and regmap_write() read/write a 32-bit value
only. To write other lengths, regmap_raw_read() and regmap_raw_write()
need to be used.

This means that any driver ported from Linux that relies on
regmap_{read,write}() to know the size already has to be updated at each
callsite. This makes the port harder to maintain.

So, allow specifying the read/write width to make it easier to port the
drivers, since now the only change needed is when initializing the
regmap.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:22 -04:00
Pratyush Yadav
97d8a6970a regmap: zero out the regmap on allocation
Some fields will be introduced in the regmap structure that should be
set to 0 by default. So, once we allocate a regmap, make sure it is
zeroed out to avoid unexpected defaults for those values.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 11:55:22 -04:00