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85 lines
3.8 KiB
C++
85 lines
3.8 KiB
C++
/*-----------------------------------------*\
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| MSIRGBController.cpp |
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| Driver for MSI-RGB lighting controller |
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| Logic adapted from: |
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| https://github.com/nagisa/msi-rgb |
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| Adam Honse (CalcProgrammer1) 2/11/2020 |
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\*-----------------------------------------*/
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#include "MSIRGBController.h"
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#include "super_io.h"
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MSIRGBController::MSIRGBController(int sioaddr)
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{
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msi_sioaddr = sioaddr;
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/*-----------------------------------------------------*\
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| Set logical device register to RGB controller |
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\*-----------------------------------------------------*/
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superio_outb(msi_sioaddr, SIO_REG_LOGDEV, MSI_SIO_LOGDEV_RGB);
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/*-----------------------------------------------------*\
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| Test if RGB is enabled. If it is not, enable it. |
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\*-----------------------------------------------------*/
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int enable = superio_inb(msi_sioaddr, MSI_SIO_RGB_REG_ENABLE);
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if((enable & MSI_SIO_RGB_ENABLE_MASK) != MSI_SIO_RGB_ENABLE_MASK)
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{
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_ENABLE, MSI_SIO_RGB_ENABLE_MASK & (enable & !MSI_SIO_RGB_ENABLE_MASK));
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}
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/*-----------------------------------------------------*\
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| Lighting enabled, no pulsing or blinking |
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\*-----------------------------------------------------*/
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_CFG_1, 0x00);
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/*-----------------------------------------------------*\
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| Lighting enabled, RGB non-inverted, header on |
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\*-----------------------------------------------------*/
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_CFG_3, 0xE2);
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}
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MSIRGBController::~MSIRGBController()
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{
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}
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void MSIRGBController::SetColor(unsigned char red, unsigned char green, unsigned char blue)
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{
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/*-----------------------------------------------------*\
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| The MSI RGB controller uses 4 bits per color rather |
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| than 8. Shift the values by 4 so that the 4 most |
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| significant bits of each color are the new color value|
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\*-----------------------------------------------------*/
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red = red >> 4;
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green = green >> 4;
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blue = blue >> 4;
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/*-----------------------------------------------------*\
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| Set logical device register to RGB controller |
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\*-----------------------------------------------------*/
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superio_outb(msi_sioaddr, SIO_REG_LOGDEV, MSI_SIO_LOGDEV_RGB);
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/*-----------------------------------------------------*\
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| Write the colors to the color sequence registers |
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| Only static mode is supported right now - all colors |
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| are the same. |
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\*-----------------------------------------------------*/
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_RED_1_0, (red & (red << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_RED_3_2, (red & (red << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_RED_5_4, (red & (red << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_RED_7_6, (red & (red << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_GREEN_1_0, (green & (green << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_GREEN_3_2, (green & (green << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_GREEN_5_4, (green & (green << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_GREEN_7_6, (green & (green << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_BLUE_1_0, (blue & (blue << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_BLUE_3_2, (blue & (blue << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_BLUE_5_4, (blue & (blue << 4)));
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superio_outb(msi_sioaddr, MSI_SIO_RGB_REG_BLUE_7_6, (blue & (blue << 4)));
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} |