This implements a library for accessing EDID data from an LCD panel.
This is used to obtain information about the panel such as its
resolution and type.
This is a tidied-up version of the original code pulled from
https://github.com/ynezz/u-boot-edid.
The changes we made are:
- removed bit fields in the struct;
- removed endianness cases in the struct;
- fixed some wrong definitions;
- fixed to fit 80 columns;
- fixed some code styles.
Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This new command supports hashing SHA1 and SHA256. It could be extended
to others such as MD5 and the CRC algorithms. The syntax is modeled on
those:
hash <algorithm> <address> <length> [*<dest_addr> | <dest_envvar>]
to calculate a hash, and:
hash -v <algorithm> <address> <length> [*<verify_addr> | <verify_envvar>]
to verify a hash.
Use CONFIG_CMD_HASH to enable the command, CONFIG_SHA1 to enable SHA1 and
CONFIG_SHA256 to enable SHA256.
The existing sha1sum command remains.
Signed-off-by: Simon Glass <sjg@chromium.org>
We have a SHA1 command and want to add a SHA256 command also. Instead of
duplicating the code, create a generic hash API which can process
commands for different algorithms.
Signed-off-by: Simon Glass <sjg@chromium.org>
strncasecmp() is present as strnicmp() but disabled. Make it available
and define strcasecmp() also. There is a only a small performance penalty
to having strcasecmp() call strncasecmp(), so do this instead of a
standalone function, to save code space.
Update the prototype in arch-specific headers as needed to avoid warnings.
Signed-off-by: Simon Glass <sjg@chromium.org>
In preparation for making the hash function common, we may as well use
const where we can.
Also add a watchdog version of the hashing function.
Signed-off-by: Simon Glass <sjg@chromium.org>
In preparation for making the hash function common, we may as well use
const where we can. Also the input length cannot be negative, but may
be very large, so use unsigned.
Signed-off-by: Simon Glass <sjg@chromium.org>
The name is already copied when we memcpy() the whole structure.
This is because struct stdio_dev has this field:
char name[16]; /* Device name */
So the data is inline, rather than being a pointer.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Sometimes data is on a block device and within a partition, but not in a
particular filesystem.
This commands permits reading raw data from a partition.
Signed-off-by: Kenneth Waters <kwaters@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Gettime returns the current timer value. If CONFIG_SYS_HZ is defined
then the timer value is also converted to seconds.
Tegra20 (SeaBoard) # gettime
Timer val: 7754
Seconds : 7
Remainder : 754
sys_hz = 1000
There has been some discussion about whether this is useful enough to
be included in U-Boot. The following boards do not have CONFIG_SYS_HZ
defined:
M52277EVB
M52277EVB_stmicro
M53017EVB
M54418TWR
M54418TWR_nand_mii
M54418TWR_nand_rmii
M54418TWR_nand_rmii_lowfreq
M54418TWR_serial_mii
M54418TWR_serial_rmii
Signed-off-by: Anton Staaf <robotboy@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
There are three couple (hcnt/lcnt) of registers for each
speed (SS/FS/HS). The driver needs to set the proper couple
of regs according to what speed we are setting.
Signed-off-by: Armando Visconti <armando.visconti@st.com>
In the newer versions of designware i2c IP there is the possibility
of configuring it with IC_EMPTYFIFO_HOLD_MASTER_EN=1, which basically
requires the s/w to generate the stop bit condition directly, as
the h/w will not automatically generate it when TX_FIFO is empty.
To avoid generation of an extra 0x0 byte sent as data, the
IC_STOP command must be sent along with the last IC_CMD.
This patch always writes bit[9] of ic_data_cmd even in the
older versions, assuming that it is a noop there.
Signed-off-by: Armando Visconti <armando.visconti@st.com>
This patch modifies the S3C i2c driver to support both Exynos4 and Exynos5
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
This patch add pinmux for I2C for Exynos4
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
This patch add the spacing for i2c for Exynos4
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
This patch adds i2c clock for Exynos4
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
OMAP5 has 8b i2c data register field, like OMAP2, 3 and 4. Handle in the same
way. This fixes the following error on OMAP5:
OMAP5430 EVM # mmc rescan
timed out in wait_for_bb: I2C_STAT=1410
twl6035: could not turn on LDO9.
Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
This algorithm computes the values of TIMING{0,1,2} registers for the
MX28 I2C block. This algorithm was derived by using a scope, but the
result seems correct.
The resulting values programmed into the registers do not correlate
with the contents in datasheet. When using the values from the datasheet,
the I2C clock were completely wrong.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Wolfgang Denk <wd@denx.de>
The I2C block reset configures the I2C bus speed to strange value.
Read the I2C speed from the block before reseting the block and
restore it afterwards, so the I2C operates correctly. This issue
can be replicated by doing unsuccessful I2C transfer, after such
transfer finishes, the I2C block clock speed is misconfigured.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
According to FSL, the value in the TIMING2 register shall be 0x00300030
instead of what's written in the datasheet. This new value correlates
with older STMP36xx datasheet. Issues were detected in Linux when this
register was misconfigured, so write this correct value.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Use i2c_set_bus_speed() in i2c_init() within the mxs i2c driver
to avoid duplication of code.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
This patch implements the setup and retrieval functions for the I2C
bus speed on the MXS I2C IP.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
This patch pulls out the I2C speed setup from the i2c_init() call
and implements the bus configuration lookup table with register
values that needs to be programmed into the I2C IP to run at
particular speed.
This patch is a first step towards implementing run-time I2C bus
speed configuration for the MXS I2C IP.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Add kerneldoc style documentation into cmd_i2c.c to properly describe
all overridable functions and most of the command interface.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Some functions in the MXC i2c driver were not static, fix this by
making them so.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Use __weak from linux/compiler.h instead of __attribute__((weak, alias))
to define overridable function. This patch is intended as a cleanup patch
to bring some consistency into the code.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Set the gpio value in gpio_direction_output() instead of an extra gpio_set_value
call.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Make the necessary adaptions for the new PMIC framework, so that mx25pdk can
be built again.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
PMIC 2.0 require to test return pointer from pmic_get()
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Moved the pmic_max77686.c max77686_pmic.h to drivers/power
and made required changes accordingly
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
We handle i2c_write return code and complain in case of error. We propagate the
error, too, to allow better handling at the upper level in the future.
Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
We add a return code to wait_for_bb() to be able to report errors to the
callers properly. We in turn handle this new error code in i2c_read, i2c_write
and i2c_probe.
Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
According to errata the AM335x device does not support internal delay
mode, so RGMII1_IDMODE and RGMII2_IDMODE must be set to 1.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
The reset procedure works on watchdog timer while before it was modifying
TIMER_1 registers.
Tested on DM365.
Signed-off-by: Davide Bonfanti <davide.bonfanti@bticino.it>
Added posted writes (read after writes) to effect the
change immediately for channel confiuration and channel
enable register
Disable the channel to purge receieve data in TX_ONLY
mode transfer otherwise rx data will get affected by
the next immediate RX_ONLY mode transfer
Wait for the EOT bit to be set after last byte has been
loaded to TX shift register in the the TX_ONLY mode.This
ensures TX data has been completely shifted out
Disable the channel in RX_ONLY mode before reading the
last data from RXX register to prevent the SPI slave
to transmit next word
Signed-off-by: Ajoy Kumar Das <akdas75@yahoo.in>
Cc: Tom Rini <trini@ti.com>
Cc: jacopo mondi <j.mondi@voltaelectronics.com>
Tom Wai-Hong Tam
Simon Glass
Vincent Palatin
Kenneth Waters
Anton Staaf
Nikita Kiryanov
Armando Visconti
Piotr Wilczek
Vincent Stehlé
Marek Vasut
Andreas Bießmann
Fabio Estevam
Lars Rasmusson
Minkyu Kang
Rajeshwari Shinde
Thomas Weber
Yegor Yefremov
Stefano Babic
Davide Bonfanti
ajoy