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2016-01-22dm: backlight: Add a driver for a PWM backlightSimon Glass
Many backlights need to use a PWM to control the brightness. Add a driver for this. It understands the standard device tree binding. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: backlight: Add a backlight uclassSimon Glass
LCD panels normally have a backlight which can be controlled to illuminate the LCD contents. Add a uclass to support this. Initially it only has a method to enable the backlight. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22pwm: rockchip: Add a PWM driver for Rockchip SoCsSimon Glass
Add a simple driver which implements the standard PWM uclass interface. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: pwm: Add a PWM uclassSimon Glass
Add a uclass that supports Pulse Width Modulation (PWM) devices. It provides methods to enable/disable and configure the device. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22video: bridge: Allow GPIOs to be optionalSimon Glass
Some video bridges will not have GPIOs to control reset, etc. Allow these to be optional. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22video: Add a function to control cache flushingSimon Glass
Allow the cache-flushing function of a video device to be controlled. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22video: Name consoles by their numberSimon Glass
We must use the console name in the 'stdout' variable to select the one we want. At present the name is formed from the driver name with a suffix indicating the rotation value. It seems better to name them sequentially since this can be controlled by driver order. So adjust the code to use 'vidconsole' for the first, 'vidconsole1' for the second, etc. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22gpio: Warn about invalid GPIOs used with the 'gpio' commandSimon Glass
At present there is no indication that an invalid GPIO is used except that the GPIO status is not displayed. Make the error more explicit to avoid confusion. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22stdio: Correct a build error with driver modelSimon Glass
When driver model is used for video but not for the keyboard, a compiler warnings is produced. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: jerry: Enable the Chrome OS ECSimon Glass
Turn on the EC and enable the keyboard. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Remove the explicit pinctrl settingSimon Glass
The correct pinctrl is handled automatically so we don't need to do it in the driver. The exception is when we want to use a different chip select (other than 0). But this isn't used at present. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Correct chip-enable codeSimon Glass
At present there is an incorrect call to rkspi_enable_chip(). It should be disabling the chip, not enabling it. Correct this and ensure that the chip is disabled when releasing the bus. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Implement the delaysSimon Glass
Some devices need delays before and after activiation. Implement these features in the SPI driver so that we will be able to enable the Chrome OS EC. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: gpio: Implement the get_function() methodSimon Glass
Provide this method so that 'gpio status' works fully. It now shows whether a pin is used for input, output or some other function. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: gpio: Read the GPIO value correctlySimon Glass
This function should return 0 or 1, not a mask. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: pinctrl: Implement the get_gpio_mux() methodSimon Glass
Implement this so that the GPIO command will be able to report whether a GPIO is used for input or output. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: pinctrl: Reduce the size for SPLSimon Glass
This file has many features that are not needed by SPL. Use #ifdef to remove the unused features and reduce the code size. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: clk: Make rkclk_get_clk() SoC-specificSimon Glass
The current method assumes that clocks are numbered from 0 and we can determine a clock by its number. It is safer to use an ID in the clock's platform data to avoid the situation where another clock is bound before the one we expect. Move the existing code into rk3036 since it still works there. Add a new implementation for rk3288. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Correct the bus init codeSimon Glass
Two of the init values are created locally so cannot be out of range. The masking is unnecessary and in one case is incorrect. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Remember the last speed to avoid re-setting itSimon Glass
Rather than changing the clock to the same value on every transaction, remember the last value and don't adjust the clock unless it is necessary. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: reset: Use the rk_clr/setreg() interfaceSimon Glass
Use this function in preference to the macro. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: sdram: Use the rk_clr/setreg() interfaceSimon Glass
Use this function in preference to the macro. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: clk: Add a simple version of clk_get_by_index()Simon Glass
This function adds quite a bit of code to SPL and we probably don't need all the features in SPL. Add a simple version (for SPL only) to save space. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: power: Allow regulators to not implement all operationsSimon Glass
Some regulators will not implement any operations (e.g. fixed regulators). This is not an error, so allow the autoset process to continue when one of these regulators is found. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: power: Tidy up debugging output and return valuesSimon Glass
The currect PMIC debugging is a little confusing. Adjust it so that it is clear whether the operation succeeded or failed. Also, avoid creating a new error return value when a perfectly good one is already available. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: core: Export uclass_find_device_by_of_offset()Simon Glass
It is sometimes useful to be able to find a device before probing it, perhaps to set up some platform data for it. Allow finding by of_offset also. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: pinctrl: Add a way for a GPIO driver to obtain a pin functionSimon Glass
GPIO drivers want to be able to show if a pin is enabled for input, output, or is being used by another function. Some drivers can easily find this and the code is included in the driver. For some SoCs this is more complex. Conceptually this should be handled by pinctrl rather than GPIO. Most pinctrl drivers will have this feature anyway. Add a method by which a GPIO driver can obtain the pin mux value given a GPIO reference. This avoids repeating the code in two places. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: power: Allow regulators to be omitted from SPLSimon Glass
For some boards the pmic interface is useful but the regulator interface (which comes with it) is too large. Allow them to be separated such that SPL can decide which it needs. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22spi: Correct device tree usage in spi_flash_decode_fdt()Simon Glass
This function currently searches the entire device tree for a node that it thinks is relevant. But the node is known and is passed in. Correct the code and enable it only with driver model, since only driver-model boards will use it. This avoids bringing in a large number of strings from fdtdec. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: i2c: Allow muxes to be enabled for SPL separatelySimon Glass
Since I2C muxes are seldom needed in SPL, and the code for this increases the size somewhat, add a separate option to enable I2C muxes for SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22cros_ec: Disable the Chrome OS EC in SPLSimon Glass
This is not used in SPL so don't allow it to be built there, even if I2C is enabled in SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22gpio: Allow 's' as an abbreviation for 'status'Simon Glass
The 'gpio' command allows abbreviations for most subcommands. Allow them for 'status' also. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: jerry: Drop unused optionsSimon Glass
To reduce the SPL image size, drop the LED features. Jerry does not have an LED and we can leave out GPIO support also. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Disable simple-bus in SPL for firefly-rk3288, jerrySimon Glass
This is not needed for booting, so drop it from SPL to save about 300 bytes. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: jerry: Enable the RK808 PMIC and regulatorSimon Glass
Enable this PMIC and regulator, which is used on jerry. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Move firefly and jerry to use the full pinctrlSimon Glass
Use the full pinctrl driver in U-Boot proper. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: pinctrl: Add a full pinctrl driverSimon Glass
We can make use of the device tree to configure pinctrl settings. Add this support for the driver so we can use it in U-Boot proper. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: mmc: Update the driver to use the new clock IDSimon Glass
We can use the new clk_get_by_index() function to get the correct clock. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Avoid setting the pinctrl twiceSimon Glass
If full pinctrl is enabled we don't need to manually set the pinctrl in the driver. It will happen automatically. Adjust the code to suit - we will still use manual mode in SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: spi: Update the driver to use the new clock IDSimon Glass
We can use the new clk_get_by_index() function to get the correct clock. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: i2c: Update the driver to use the new clock IDSimon Glass
We can use the new clk_get_by_index() function to get the correct clock. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: clock: Add a function to find a clock by IDSimon Glass
The current approach of using uclass_get_device() is error-prone. Another clock (for example a fixed-clock) may cause it to break. Add a function that does a proper search. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: clk: Add a function to get a peripheral clock rateSimon Glass
It is useful to be able to read the rate of a peripheral clock. Add a handler for that. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: clock: Rename the general clock variable to gclk_rateSimon Glass
The current name is confusing and a bit verbose. Rename it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Use a separate clock ID for clocksSimon Glass
At present we use the same peripheral ID for clocks and pinctrl. While this works it is probably better to use the device tree clock binding ID for clocks. We can use the clk_get_by_index() function to find this. Update the clock drivers and the code that uses them. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: jerry: Disable pmic-int-1 setup to avoid a hangSimon Glass
This hangs when activated (by probing the PMIC). Disable it for now until we understand the root cause. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Use pwrseq for MMC start-up on jerrySimon Glass
This is defined in the device tree in Linux. Copy over the settings so that this can be used instead of hard-coding the reset line. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Correct the defconfig orderSimon Glass
This has got out of sequence somehow. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: mmc: Use a pwrseq device if availableSimon Glass
Use the pwrseq uclass to find a suitable power sequence for the MMC device. If this is enabled in the device tree, we will pick it up automatically. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22rockchip: Convert the PMU IOMUX registers into an arraySimon Glass
This is easier to deal with when using generic code since it allows us to use a register index instead of naming each register. Adjust it, adding an enum to improve readability. Signed-off-by: Simon Glass <sjg@chromium.org>
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