Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
6.1 kB · 189 lines
C
at master
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190/* SPDX-License-Identifier: GPL-2.0-only *//* * Support for the xscale frame buffer. * * Author: Jean-Frederic Clere * Created: Sep 22, 2003 * Copyright: jfclere@sinix.net */
#include <linux/fb.h>
/* * Supported LCD connections * * bits 0 - 3: for LCD panel type: * * STN - for passive matrix * DSTN - for dual scan passive matrix * TFT - for active matrix * * bits 4 - 9 : for bus width * bits 10-17 : for AC Bias Pin Frequency * bit 18 : for output enable polarity * bit 19 : for pixel clock edge * bit 20 : for output pixel format when base is RGBT16 */#define LCD_CONN_TYPE(_x) ((_x) & 0x0f)#define LCD_CONN_WIDTH(_x) (((_x) >> 4) & 0x1f)
#define LCD_TYPE_MASK 0xf#define LCD_TYPE_UNKNOWN 0#define LCD_TYPE_MONO_STN 1#define LCD_TYPE_MONO_DSTN 2#define LCD_TYPE_COLOR_STN 3#define LCD_TYPE_COLOR_DSTN 4#define LCD_TYPE_COLOR_TFT 5#define LCD_TYPE_SMART_PANEL 6#define LCD_TYPE_MAX 7
#define LCD_MONO_STN_4BPP ((4 << 4) | LCD_TYPE_MONO_STN)#define LCD_MONO_STN_8BPP ((8 << 4) | LCD_TYPE_MONO_STN)#define LCD_MONO_DSTN_8BPP ((8 << 4) | LCD_TYPE_MONO_DSTN)#define LCD_COLOR_STN_8BPP ((8 << 4) | LCD_TYPE_COLOR_STN)#define LCD_COLOR_DSTN_16BPP ((16 << 4) | LCD_TYPE_COLOR_DSTN)#define LCD_COLOR_TFT_8BPP ((8 << 4) | LCD_TYPE_COLOR_TFT)#define LCD_COLOR_TFT_16BPP ((16 << 4) | LCD_TYPE_COLOR_TFT)#define LCD_COLOR_TFT_18BPP ((18 << 4) | LCD_TYPE_COLOR_TFT)#define LCD_SMART_PANEL_8BPP ((8 << 4) | LCD_TYPE_SMART_PANEL)#define LCD_SMART_PANEL_16BPP ((16 << 4) | LCD_TYPE_SMART_PANEL)#define LCD_SMART_PANEL_18BPP ((18 << 4) | LCD_TYPE_SMART_PANEL)
#define LCD_AC_BIAS_FREQ(x) (((x) & 0xff) << 10)#define LCD_BIAS_ACTIVE_HIGH (0 << 18)#define LCD_BIAS_ACTIVE_LOW (1 << 18)#define LCD_PCLK_EDGE_RISE (0 << 19)#define LCD_PCLK_EDGE_FALL (1 << 19)#define LCD_ALTERNATE_MAPPING (1 << 20)
/* * This structure describes the machine which we are running on. * It is set in linux/arch/arm/mach-pxa/machine_name.c and used in the probe routine * of linux/drivers/video/pxafb.c */struct pxafb_mode_info { u_long pixclock;
u_short xres; u_short yres;
u_char bpp; u_int cmap_greyscale:1, depth:8, transparency:1, unused:22;
/* Parallel Mode Timing */ u_char hsync_len; u_char left_margin; u_char right_margin;
u_char vsync_len; u_char upper_margin; u_char lower_margin; u_char sync;
/* Smart Panel Mode Timing - see PXA27x DM 7.4.15.0.3 for details * Note: * 1. all parameters in nanosecond (ns) * 2. a0cs{rd,wr}_set_hld are controlled by the same register bits * in pxa27x and pxa3xx, initialize them to the same value or * the larger one will be used * 3. same to {rd,wr}_pulse_width * * 4. LCD_PCLK_EDGE_{RISE,FALL} controls the L_PCLK_WR polarity * 5. sync & FB_SYNC_HOR_HIGH_ACT controls the L_LCLK_A0 * 6. sync & FB_SYNC_VERT_HIGH_ACT controls the L_LCLK_RD */ unsigned a0csrd_set_hld; /* A0 and CS Setup/Hold Time before/after L_FCLK_RD */ unsigned a0cswr_set_hld; /* A0 and CS Setup/Hold Time before/after L_PCLK_WR */ unsigned wr_pulse_width; /* L_PCLK_WR pulse width */ unsigned rd_pulse_width; /* L_FCLK_RD pulse width */ unsigned cmd_inh_time; /* Command Inhibit time between two writes */ unsigned op_hold_time; /* Output Hold time from L_FCLK_RD negation */};
struct pxafb_mach_info { struct pxafb_mode_info *modes; unsigned int num_modes;
unsigned int lcd_conn; unsigned long video_mem_size;
u_int fixed_modes:1, cmap_inverse:1, cmap_static:1, acceleration_enabled:1, unused:28;
/* The following should be defined in LCCR0 * LCCR0_Act or LCCR0_Pas Active or Passive * LCCR0_Sngl or LCCR0_Dual Single/Dual panel * LCCR0_Mono or LCCR0_Color Mono/Color * LCCR0_4PixMono or LCCR0_8PixMono (in mono single mode) * LCCR0_DMADel(Tcpu) (optional) DMA request delay * * The following should not be defined in LCCR0: * LCCR0_OUM, LCCR0_BM, LCCR0_QDM, LCCR0_DIS, LCCR0_EFM * LCCR0_IUM, LCCR0_SFM, LCCR0_LDM, LCCR0_ENB */ u_int lccr0; /* The following should be defined in LCCR3 * LCCR3_OutEnH or LCCR3_OutEnL Output enable polarity * LCCR3_PixRsEdg or LCCR3_PixFlEdg Pixel clock edge type * LCCR3_Acb(X) AB Bias pin frequency * LCCR3_DPC (optional) Double Pixel Clock mode (untested) * * The following should not be defined in LCCR3 * LCCR3_HSP, LCCR3_VSP, LCCR0_Pcd(x), LCCR3_Bpp */ u_int lccr3; /* The following should be defined in LCCR4 * LCCR4_PAL_FOR_0 or LCCR4_PAL_FOR_1 or LCCR4_PAL_FOR_2 * * All other bits in LCCR4 should be left alone. */ u_int lccr4; void (*pxafb_backlight_power)(int); void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *); void (*smart_update)(struct fb_info *);};
void pxa_set_fb_info(struct device *, struct pxafb_mach_info *);
/* smartpanel related */#define SMART_CMD_A0 (0x1 << 8)#define SMART_CMD_READ_STATUS_REG (0x0 << 9)#define SMART_CMD_READ_FRAME_BUFFER ((0x0 << 9) | SMART_CMD_A0)#define SMART_CMD_WRITE_COMMAND (0x1 << 9)#define SMART_CMD_WRITE_DATA ((0x1 << 9) | SMART_CMD_A0)#define SMART_CMD_WRITE_FRAME ((0x2 << 9) | SMART_CMD_A0)#define SMART_CMD_WAIT_FOR_VSYNC (0x3 << 9)#define SMART_CMD_NOOP (0x4 << 9)#define SMART_CMD_INTERRUPT (0x5 << 9)
#define SMART_CMD(x) (SMART_CMD_WRITE_COMMAND | ((x) & 0xff))#define SMART_DAT(x) (SMART_CMD_WRITE_DATA | ((x) & 0xff))
/* SMART_DELAY() is introduced for software controlled delay primitive which * can be inserted between command sequences, unused command 0x6 is used here * and delay ranges from 0ms ~ 255ms */#define SMART_CMD_DELAY (0x6 << 9)#define SMART_DELAY(ms) (SMART_CMD_DELAY | ((ms) & 0xff))
#ifdef CONFIG_FB_PXA_SMARTPANELextern int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int);extern int pxafb_smart_flush(struct fb_info *info);#elsestatic inline int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int n){ return 0;}
static inline int pxafb_smart_flush(struct fb_info *info){ return 0;}#endif