include/linux/sm501.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /* include/linux/sm501.h
0003  *
0004  * Copyright (c) 2006 Simtec Electronics
0005  *  Ben Dooks <ben@simtec.co.uk>
0006  *  Vincent Sanders <vince@simtec.co.uk>
0007 */
0008
0009 extern int sm501_unit_power(struct device *dev,
0010                 unsigned int unit, unsigned int to);
0011
0012 extern unsigned long sm501_set_clock(struct device *dev,
0013                      int clksrc, unsigned long freq);
0014
0015 extern unsigned long sm501_find_clock(struct device *dev,
0016                       int clksrc, unsigned long req_freq);
0017
0018 /* sm501_misc_control
0019  *
0020  * Modify the SM501's MISC_CONTROL register
0021 */
0022
0023 extern int sm501_misc_control(struct device *dev,
0024                   unsigned long set, unsigned long clear);
0025
0026 /* sm501_modify_reg
0027  *
0028  * Modify a register in the SM501 which may be shared with other
0029  * drivers.
0030 */
0031
0032 extern unsigned long sm501_modify_reg(struct device *dev,
0033                       unsigned long reg,
0034                       unsigned long set,
0035                       unsigned long clear);
0036
0037
0038 /* Platform data definitions */
0039
0040 #define SM501FB_FLAG_USE_INIT_MODE  (1<<0)
0041 #define SM501FB_FLAG_DISABLE_AT_EXIT    (1<<1)
0042 #define SM501FB_FLAG_USE_HWCURSOR   (1<<2)
0043 #define SM501FB_FLAG_USE_HWACCEL    (1<<3)
0044 #define SM501FB_FLAG_PANEL_NO_FPEN  (1<<4)
0045 #define SM501FB_FLAG_PANEL_NO_VBIASEN   (1<<5)
0046 #define SM501FB_FLAG_PANEL_INV_FPEN (1<<6)
0047 #define SM501FB_FLAG_PANEL_INV_VBIASEN  (1<<7)
0048
0049 struct sm501_platdata_fbsub {
0050     struct fb_videomode *def_mode;
0051     unsigned int         def_bpp;
0052     unsigned long        max_mem;
0053     unsigned int         flags;
0054 };
0055
0056 enum sm501_fb_routing {
0057     SM501_FB_OWN        = 0,    /* CRT=>CRT, Panel=>Panel */
0058     SM501_FB_CRT_PANEL  = 1,    /* Panel=>CRT, Panel=>Panel */
0059 };
0060
0061 /* sm501_platdata_fb flag field bit definitions */
0062
0063 #define SM501_FBPD_SWAP_FB_ENDIAN   (1<<0)  /* need to endian swap */
0064
0065 /* sm501_platdata_fb
0066  *
0067  * configuration data for the framebuffer driver
0068 */
0069
0070 struct sm501_platdata_fb {
0071     enum sm501_fb_routing        fb_route;
0072     unsigned int             flags;
0073     struct sm501_platdata_fbsub *fb_crt;
0074     struct sm501_platdata_fbsub *fb_pnl;
0075 };
0076
0077 /* gpio i2c
0078  *
0079  * Note, we have to pass in the bus number, as the number used will be
0080  * passed to the i2c-gpio driver's platform_device.id, subsequently used
0081  * to register the i2c bus.
0082 */
0083
0084 struct sm501_platdata_gpio_i2c {
0085     unsigned int        bus_num;
0086     unsigned int        pin_sda;
0087     unsigned int        pin_scl;
0088     int         udelay;
0089     int         timeout;
0090 };
0091
0092 /* sm501_initdata
0093  *
0094  * use for initialising values that may not have been setup
0095  * before the driver is loaded.
0096 */
0097
0098 struct sm501_reg_init {
0099     unsigned long       set;
0100     unsigned long       mask;
0101 };
0102
0103 #define SM501_USE_USB_HOST  (1<<0)
0104 #define SM501_USE_USB_SLAVE (1<<1)
0105 #define SM501_USE_SSP0      (1<<2)
0106 #define SM501_USE_SSP1      (1<<3)
0107 #define SM501_USE_UART0     (1<<4)
0108 #define SM501_USE_UART1     (1<<5)
0109 #define SM501_USE_FBACCEL   (1<<6)
0110 #define SM501_USE_AC97      (1<<7)
0111 #define SM501_USE_I2S       (1<<8)
0112 #define SM501_USE_GPIO      (1<<9)
0113
0114 #define SM501_USE_ALL       (0xffffffff)
0115
0116 struct sm501_initdata {
0117     struct sm501_reg_init   gpio_low;
0118     struct sm501_reg_init   gpio_high;
0119     struct sm501_reg_init   misc_timing;
0120     struct sm501_reg_init   misc_control;
0121
0122     unsigned long       devices;
0123     unsigned long       mclk;       /* non-zero to modify */
0124     unsigned long       m1xclk;     /* non-zero to modify */
0125 };
0126
0127 /* sm501_init_gpio
0128  *
0129  * default gpio settings
0130 */
0131
0132 struct sm501_init_gpio {
0133     struct sm501_reg_init   gpio_data_low;
0134     struct sm501_reg_init   gpio_data_high;
0135     struct sm501_reg_init   gpio_ddr_low;
0136     struct sm501_reg_init   gpio_ddr_high;
0137 };
0138
0139 #define SM501_FLAG_SUSPEND_OFF      (1<<4)
0140
0141 /* sm501_platdata
0142  *
0143  * This is passed with the platform device to allow the board
0144  * to control the behaviour of the SM501 driver(s) which attach
0145  * to the device.
0146  *
0147 */
0148
0149 struct sm501_platdata {
0150     struct sm501_initdata       *init;
0151     struct sm501_init_gpio      *init_gpiop;
0152     struct sm501_platdata_fb    *fb;
0153
0154     int              flags;
0155     int              gpio_base;
0156
0157     int (*get_power)(struct device *dev);
0158     int (*set_power)(struct device *dev, unsigned int on);
0159
0160     struct sm501_platdata_gpio_i2c  *gpio_i2c;
0161     unsigned int             gpio_i2c_nr;
0162 };
0163
0164 #if defined(CONFIG_PPC32)
0165 #define smc501_readl(addr)      ioread32be((addr))
0166 #define smc501_writel(val, addr)    iowrite32be((val), (addr))
0167 #else
0168 #define smc501_readl(addr)      readl(addr)
0169 #define smc501_writel(val, addr)    writel(val, addr)
0170 #endif