1d3f0cbe0d
In the .board_init() callback will set up a mux register in the Nomadik system controller. It so happens that the platform has two display output engines, and we have to poke a bit in a special register to make sure the right engine is muxed in as they are mutually exclusive. The Nomadik CLCD variant is instantiated on a platform where it is combined with a 800x480 TPO WVGA display. In the .panel_init() hook we will detect this display from the compatible string and set it up. We also add .enable() and .disable() callbacks for it as the sleep state is software controlled. The display is connected with a special 3-wire serial bus (this is sadly neither I2C or SPI) using three GPIO lines that we bitbang to detect the display and enable/disable sleep state. Cc: Pawel Moll <pawel.moll@arm.com> Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
25 lines
563 B
C
25 lines
563 B
C
#ifndef _AMBA_CLCD_NOMADIK_H
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#define _AMBA_CLCD_NOMADIK_H
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#include <linux/amba/bus.h>
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#ifdef CONFIG_ARCH_NOMADIK
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int nomadik_clcd_init_board(struct amba_device *adev,
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struct clcd_board *board);
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int nomadik_clcd_init_panel(struct clcd_fb *fb,
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struct device_node *endpoint);
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#else
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static inline int nomadik_clcd_init_board(struct amba_device *adev,
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struct clcd_board *board)
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{
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return 0;
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}
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static inline int nomadik_clcd_init_panel(struct clcd_fb *fb,
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struct device_node *endpoint)
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{
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return 0;
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}
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#endif
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#endif /* inclusion guard */
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