12487a1efa
The device is Xiaomi Redmi 1S, based on MSM8296 platform, with Qualcomm Snapdragon 400. The kernel is from lineageOS (3.4.0). Some additional patches are needed for successful compilation. The screen dimension is 720x1280. The touchscreen device name is ft5x06_i2c. Use this name for udev instead of hardcoded device path. Also add a workaround for red screen weston by setting weston_pixman to 2 The screen doesn't refresh. Enabling msm-fb-refresher as suggested. Add udev rule to indicate whether the device is in charging state. Green led indicates that the device is charging, whereas red light indicates that the device is discharging. For prima wlan module to work, an initialization procedure is needed ( echo 1 > /dev/wcnss_wlan ), before loading the prima wlan module (wlan.ko). Also build the prima wlan as module. Xiaomi Redmi 1S is using pronto wlan module, which needs some firmware to run. Add the required wifi firmware to enable the wifi interface. Add an openrc service to load wlan module after wcnss_service is initialized.
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
// SOURCE:
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// https://github.com/NextThingCo/CHIP-u-boot/issues/10#issuecomment-287515505
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#ifndef __LINUX_COMPILER_H
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#error "Please don't include <linux/compiler-gcc6.h> directly, include <linux/compiler.h> instead."
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#endif
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#define __used __attribute__((__used__))
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#define __must_check __attribute__((warn_unused_result))
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#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
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/* Mark functions as cold. gcc will assume any path leading to a call
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to them will be unlikely. This means a lot of manual unlikely()s
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are unnecessary now for any paths leading to the usual suspects
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like BUG(), printk(), panic() etc. [but let's keep them for now for
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older compilers]
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Early snapshots of gcc 4.3 don't support this and we can't detect this
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in the preprocessor, but we can live with this because they're unreleased.
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Maketime probing would be overkill here.
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gcc also has a __attribute__((__hot__)) to move hot functions into
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a special section, but I don't see any sense in this right now in
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the kernel context */
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#define __cold __attribute__((__cold__))
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#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
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#ifndef __CHECKER__
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# define __compiletime_warning(message) __attribute__((warning(message)))
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# define __compiletime_error(message) __attribute__((error(message)))
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#endif /* __CHECKER__ */
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/*
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* Mark a position in code as unreachable. This can be used to
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* suppress control flow warnings after asm blocks that transfer
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* control elsewhere.
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*
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* Early snapshots of gcc 4.5 don't support this and we can't detect
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* this in the preprocessor, but we can live with this because they're
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* unreleased. Really, we need to have autoconf for the kernel.
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*/
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#define unreachable() __builtin_unreachable()
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/* Mark a function definition as prohibited from being cloned. */
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#define __noclone __attribute__((__noclone__))
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/*
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* Tell the optimizer that something else uses this function or variable.
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*/
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#define __visible __attribute__((externally_visible))
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/*
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* GCC 'asm goto' miscompiles certain code sequences:
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*
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* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
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*
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* Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
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*
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* (asm goto is automatically volatile - the naming reflects this.)
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*/
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#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
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#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
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#define __HAVE_BUILTIN_BSWAP32__
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#define __HAVE_BUILTIN_BSWAP64__
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#define __HAVE_BUILTIN_BSWAP16__
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#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
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