| Commit message (Collapse) | Author | Age | Files | Lines |
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Port Microchip USB251x USB hub driver from Linux. Needed by ZII's
i.MX8MQ boards.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Import DWC3 USB controller driver from Linux. This is a bare minimum
port of the code needed to support USB host functionality on
i.MX8MQ. No other use-case is explicitly supported.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Import a subset of clk_bulk API from Linux to support porting kernel
code that uses it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Regardless of the value of CONFIG_HAVE_CLK, clk_put() implementation
is always a no-op. Move the definition to linux/clk.h and drop the
rest of the code implementing it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Port i.MX8MQ USB PHY driver from Linux.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In order to support PHY driver probe deferral change the code to
assume EPROBE_DEFER instead of ENODEV when requested PHY is missing
from phy_provider_list.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Make use of lo_hi_readq/writeq() to implement xhci_read/write_64()
helpers, same as it is done in the Linux kernel.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Simplify route string building loop by avoiding checking
top_dev->parent->descriptor->bDeviceClass twice.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Initialize TRT flag for xHCI >= 1.0, not just == 1.0. This is what
Linux xHCI driver does.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Simplfy xhci_submit_normal()'s logic a bit by using helper variables
and making sure that usb_pipein(pipe) is only called once.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Drop 'dma' field from struct xhci_hcd since it is not really used
anywhere.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Current TRB initialization code in xHCI driver is:
a) Somewhat inconsistent in endianness correctness: LE is insured
in some places whereas in some places it isn't
b) Somewhat inconsistent in how DMA buffer address is being
written: some places utilize xhci_write_64, whereas others just
assing cmd_trb field directly
c) A bit wasetful since in a number of codepaths where TRB is used
it is memset to zero first only to have 80+% of its fields
changed to something else right after.
To fix all of the above introduce xhci_init_event_cmd_trb(), that will
initialize all of the fileds to desired values only once as well as
taking care of endianness.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Convert xhci_submit_control() to use dma_(un)map_single(). These
functions both allow us to handle potential physical/virtual address
differences as well as allowing to drop a number of typecasts.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Convert xhci_submit_normal() to use dma_(un)map_single(). These
functions both allow us to handle potential physical/virtual address
differences as well as allowing to drop a number of typecasts.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Driver's .submit_control() callback can and will be called with buffer
set to NULL (and length set to 0), so we need to make sure that we
don't try to DMA sync the buffer in that case. Add appropriate gurads
to make sure that doesn't happen.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Xhci_submit_control() submits TRB_DATA with TRB_IOC flag regardless of
the vlaue of req->requesttype, so we shouldn't gate waiting for the
event that will result from it with "req->requesttype &
USB_DIR_IN". Failing to do this will result in unstable USB
performance and will eventually cause the controller to fail
completely.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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xHCI spec allows for various context to be either 32 or 64 bytes in
size, so we can't rely on struct definitions to correctly reflect data
layout. Port varios context accessors from Linux kernel and convert
the rest of the code to use them in order to be able to support both
context sizes.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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On_hs_hub is a boolean, not a bitfiled, so usage of bitwise or is
unnecessary. Replace it with a regular assignement operator.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Make sure to initialize xhci->rings_list, otherwise any use of the
driver will result in a crash.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Cast ~XHCI_IRQS to u32 to avoid getting a warning on 64-bit builds.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Replace occasional all-whiltespace indentation with tabs for
consistency.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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i2c is used in SPD EEPROMs and thus needed very early before barebox is
up. This patch adds a i.MX i2c driver variant for use in PBL.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We'll add a stripped down driver variant for use in PBL. To share the
register defines add a header file for them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We speed up the clock frequency only if probed via platform_data.
Additionally honour the "clock-frequency" property.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Following the Linux driver the controller should be stopped in the
read transfer path only after the last transfer of a message, but
not when other transfers of the same message are following. Implement
this behaviour for the barebox driver aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We poll for different bits in the status register in different
functions. Instead of repeating the polling loops each time create
a helper function for it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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dev_dbg is a no-op when debugging is disabled, so no need for extra ifdefs.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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4ed5b77 ("i.MX: i2c: Add Vybrid support") introduced regshifts for the
register offsets, but missed to adjust the register offset for the
FSL_I2C_DFSRR register (which exists only on PowerPC). Fix this.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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No need to put the of_compatible field into ifdefs, remove them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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No need for a define which is used only once.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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i2c_fsl_write() and i2c_fsl_read() take exactly one i2c message, not
multiple ones, hence rename the variable from "msgs" to "msg".
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We have to write to FSL_I2C_I2DR and wait for completion/ack three
times in the code. Instead of open coding it each time create a
helper function for it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We can track the stopped status in the I2CR_MSTA bit, no need for an
extra variable. Also we can call i2c_fsl_stop() instead of open coding
it in i2c_fsl_read().
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Move disabling of the controller out of i2c_fsl_stop(). This makes the
function reusable in other places in the next patch.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In i2c_fsl_stop() we call i2c_fsl_bus_busy() a second time when it
fails. If it fails once it won't succeed the second time, so drop
the second call.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The BREN bit tells us a watermark level sized buffer is ready for read.
Instead of testing it before each FIFO read we must only check it once
and then read a watermark level sized buffer. This is at least necessary
on Layerscape, otherwise timeouts occur while reading the buffer.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We'll need big endian support for Layerscape, so put the io accessors
into static inline wrappers.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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To make them usable for the PBL driver aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The esdhc-xload code will be used by upcoming Layerscape support aswell,
so move it from architecture code to drivers/mci/.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Port of a Linux commit 29d6b80bc36be62ae38ed8ac3f7a426975fe7dfa
The PCIe IP block has an additional clock, "pcie_aux", that needs to
be controlled by the driver. Add code to support it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This driver is using SetWatchdogTimer() UEFI interface and was
tested on iBASE MI991AF Mini-ITX motherboard.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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make local functions static and remove unused code
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Without this building fails with:
drivers/hab/habv3.c:80:12: error: static declaration of 'imx25_hab_get_status' follows non-static declaration
In file included from drivers/hab/habv3.c:14:
include/hab.h:39:5: note: previous declaration of 'imx25_hab_get_status' was here
drivers/hab/habv3.c:87:1: warning: data definition has no type or storage class
drivers/hab/habv3.c:87:1: warning: type defaults to 'int' in declaration of 'postmmu_initcall' [-Wimplicit-int]
drivers/hab/habv3.c:87:1: warning: parameter names (without types) in function declaration
drivers/hab/habv3.c:80:12: warning: 'imx25_hab_get_status' defined but not used [-Wunused-function]
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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