/* * linux/drivers/video/arkfb.c -- Frame buffer device driver for ARK 2000PV * with ICS 5342 dac (it is easy to add support for different dacs). * * Copyright (c) 2007 Ondrej Zajicek <[email protected]> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. * * Code is based on s3fb */ #include <linux/aperture.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/tty.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/svga.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */ #include <video/vga.h> struct arkfb_info { … }; /* ------------------------------------------------------------------------- */ static const struct svga_fb_format arkfb_formats[] = …; /* CRT timing register sets */ static const struct vga_regset ark_h_total_regs[] = …; static const struct vga_regset ark_h_display_regs[] = …; static const struct vga_regset ark_h_blank_start_regs[] = …; static const struct vga_regset ark_h_blank_end_regs[] = …; static const struct vga_regset ark_h_sync_start_regs[] = …; static const struct vga_regset ark_h_sync_end_regs[] = …; static const struct vga_regset ark_v_total_regs[] = …; static const struct vga_regset ark_v_display_regs[] = …; static const struct vga_regset ark_v_blank_start_regs[] = …; // const struct vga_regset ark_v_blank_end_regs[] = {{0x16, 0, 6}, VGA_REGSET_END}; static const struct vga_regset ark_v_blank_end_regs[] = …; static const struct vga_regset ark_v_sync_start_regs[] = …; static const struct vga_regset ark_v_sync_end_regs[] = …; static const struct vga_regset ark_line_compare_regs[] = …; static const struct vga_regset ark_start_address_regs[] = …; static const struct vga_regset ark_offset_regs[] = …; static const struct svga_timing_regs ark_timing_regs = …; /* ------------------------------------------------------------------------- */ /* Module parameters */ static char *mode_option = …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; module_param(mode_option, charp, 0444); MODULE_PARM_DESC(…) …; module_param_named(mode, mode_option, charp, 0444); MODULE_PARM_DESC(…) …; static int threshold = …; module_param(threshold, int, 0644); MODULE_PARM_DESC(…) …; /* ------------------------------------------------------------------------- */ static void arkfb_settile(struct fb_info *info, struct fb_tilemap *map) { … } static void arkfb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor) { … } static struct fb_tile_ops arkfb_tile_ops = …; /* ------------------------------------------------------------------------- */ /* image data is MSB-first, fb structure is MSB-first too */ static inline u32 expand_color(u32 c) { … } /* arkfb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ static void arkfb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) { … } /* arkfb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ static void arkfb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { … } /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ static inline u32 expand_pixel(u32 c) { … } /* arkfb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ static void arkfb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) { … } static void arkfb_imageblit(struct fb_info *info, const struct fb_image *image) { … } static void arkfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { … } /* ------------------------------------------------------------------------- */ enum { … }; struct dac_ops { … }; dac_read_regs_t; dac_write_regs_t; struct dac_info { … }; static inline void dac_read_regs(struct dac_info *info, u8 *code, int count) { … } static inline void dac_write_reg(struct dac_info *info, u8 reg, u8 val) { … } static inline void dac_write_regs(struct dac_info *info, u8 *code, int count) { … } static inline int dac_set_mode(struct dac_info *info, int mode) { … } static inline int dac_set_freq(struct dac_info *info, int channel, u32 freq) { … } static inline void dac_release(struct dac_info *info) { … } /* ------------------------------------------------------------------------- */ /* ICS5342 DAC */ struct ics5342_info { … }; #define DAC_PAR(info) … /* LSB is set to distinguish unused slots */ static const u8 ics5342_mode_table[DAC_MAX] = …; static int ics5342_set_mode(struct dac_info *info, int mode) { … } static const struct svga_pll ics5342_pll = …; /* pd4 - allow only posdivider 4 (r=2) */ static const struct svga_pll ics5342_pll_pd4 = …; /* 270 MHz should be upper bound for VCO clock according to specs, but that is too restrictive in pd4 case */ static int ics5342_set_freq(struct dac_info *info, int channel, u32 freq) { … } static void ics5342_release(struct dac_info *info) { … } static struct dac_ops ics5342_ops = …; static struct dac_info * ics5342_init(dac_read_regs_t drr, dac_write_regs_t dwr, void *data) { … } /* ------------------------------------------------------------------------- */ static unsigned short dac_regs[4] = …; static void ark_dac_read_regs(void *data, u8 *code, int count) { … } static void ark_dac_write_regs(void *data, u8 *code, int count) { … } static void ark_set_pixclock(struct fb_info *info, u32 pixclock) { … } /* Open framebuffer */ static int arkfb_open(struct fb_info *info, int user) { … } /* Close framebuffer */ static int arkfb_release(struct fb_info *info, int user) { … } /* Validate passed in var */ static int arkfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { … } /* Set video mode from par */ static int arkfb_set_par(struct fb_info *info) { … } /* Set a colour register */ static int arkfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *fb) { … } /* Set the display blanking state */ static int arkfb_blank(int blank_mode, struct fb_info *info) { … } /* Pan the display */ static int arkfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { … } /* ------------------------------------------------------------------------- */ /* Frame buffer operations */ static const struct fb_ops arkfb_ops = …; /* ------------------------------------------------------------------------- */ /* PCI probe */ static int ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { … } /* PCI remove */ static void ark_pci_remove(struct pci_dev *dev) { … } /* PCI suspend */ static int __maybe_unused ark_pci_suspend(struct device *dev) { … } /* PCI resume */ static int __maybe_unused ark_pci_resume(struct device *dev) { … } static const struct dev_pm_ops ark_pci_pm_ops = …; /* List of boards that we are trying to support */ static const struct pci_device_id ark_devices[] = …; MODULE_DEVICE_TABLE(pci, ark_devices); static struct pci_driver arkfb_pci_driver = …; /* Cleanup */ static void __exit arkfb_cleanup(void) { … } /* Driver Initialisation */ static int __init arkfb_init(void) { … } module_init(…) …; module_exit(arkfb_cleanup);
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