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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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42cd2366fb
Add support for adding the GPIO based I2C resources. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Cc: Arnaud Patard <apatard@mandriva.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
175 lines
4.4 KiB
C
175 lines
4.4 KiB
C
/* include/linux/sm501.h
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*
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* Copyright (c) 2006 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* Vincent Sanders <vince@simtec.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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extern int sm501_unit_power(struct device *dev,
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unsigned int unit, unsigned int to);
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extern unsigned long sm501_set_clock(struct device *dev,
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int clksrc, unsigned long freq);
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extern unsigned long sm501_find_clock(struct device *dev,
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int clksrc, unsigned long req_freq);
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/* sm501_misc_control
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*
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* Modify the SM501's MISC_CONTROL register
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*/
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extern int sm501_misc_control(struct device *dev,
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unsigned long set, unsigned long clear);
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/* sm501_modify_reg
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*
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* Modify a register in the SM501 which may be shared with other
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* drivers.
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*/
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extern unsigned long sm501_modify_reg(struct device *dev,
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unsigned long reg,
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unsigned long set,
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unsigned long clear);
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/* Platform data definitions */
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#define SM501FB_FLAG_USE_INIT_MODE (1<<0)
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#define SM501FB_FLAG_DISABLE_AT_EXIT (1<<1)
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#define SM501FB_FLAG_USE_HWCURSOR (1<<2)
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#define SM501FB_FLAG_USE_HWACCEL (1<<3)
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#define SM501FB_FLAG_PANEL_NO_FPEN (1<<4)
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#define SM501FB_FLAG_PANEL_NO_VBIASEN (1<<5)
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#define SM501FB_FLAG_PANEL_INV_FPEN (1<<6)
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#define SM501FB_FLAG_PANEL_INV_VBIASEN (1<<7)
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struct sm501_platdata_fbsub {
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struct fb_videomode *def_mode;
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unsigned int def_bpp;
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unsigned long max_mem;
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unsigned int flags;
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};
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enum sm501_fb_routing {
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SM501_FB_OWN = 0, /* CRT=>CRT, Panel=>Panel */
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SM501_FB_CRT_PANEL = 1, /* Panel=>CRT, Panel=>Panel */
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};
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/* sm501_platdata_fb flag field bit definitions */
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#define SM501_FBPD_SWAP_FB_ENDIAN (1<<0) /* need to endian swap */
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/* sm501_platdata_fb
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*
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* configuration data for the framebuffer driver
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*/
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struct sm501_platdata_fb {
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enum sm501_fb_routing fb_route;
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unsigned int flags;
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struct sm501_platdata_fbsub *fb_crt;
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struct sm501_platdata_fbsub *fb_pnl;
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};
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/* gpio i2c
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*
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* Note, we have to pass in the bus number, as the number used will be
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* passed to the i2c-gpio driver's platform_device.id, subsequently used
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* to register the i2c bus.
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*/
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struct sm501_platdata_gpio_i2c {
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unsigned int bus_num;
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unsigned int pin_sda;
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unsigned int pin_scl;
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int udelay;
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int timeout;
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};
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/* sm501_initdata
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*
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* use for initialising values that may not have been setup
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* before the driver is loaded.
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*/
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struct sm501_reg_init {
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unsigned long set;
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unsigned long mask;
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};
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#define SM501_USE_USB_HOST (1<<0)
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#define SM501_USE_USB_SLAVE (1<<1)
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#define SM501_USE_SSP0 (1<<2)
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#define SM501_USE_SSP1 (1<<3)
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#define SM501_USE_UART0 (1<<4)
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#define SM501_USE_UART1 (1<<5)
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#define SM501_USE_FBACCEL (1<<6)
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#define SM501_USE_AC97 (1<<7)
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#define SM501_USE_I2S (1<<8)
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#define SM501_USE_GPIO (1<<9)
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#define SM501_USE_ALL (0xffffffff)
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struct sm501_initdata {
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struct sm501_reg_init gpio_low;
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struct sm501_reg_init gpio_high;
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struct sm501_reg_init misc_timing;
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struct sm501_reg_init misc_control;
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unsigned long devices;
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unsigned long mclk; /* non-zero to modify */
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unsigned long m1xclk; /* non-zero to modify */
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};
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/* sm501_init_gpio
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*
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* default gpio settings
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*/
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struct sm501_init_gpio {
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struct sm501_reg_init gpio_data_low;
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struct sm501_reg_init gpio_data_high;
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struct sm501_reg_init gpio_ddr_low;
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struct sm501_reg_init gpio_ddr_high;
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};
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#define SM501_FLAG_SUSPEND_OFF (1<<4)
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/* sm501_platdata
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*
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* This is passed with the platform device to allow the board
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* to control the behaviour of the SM501 driver(s) which attach
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* to the device.
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*
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*/
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struct sm501_platdata {
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struct sm501_initdata *init;
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struct sm501_init_gpio *init_gpiop;
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struct sm501_platdata_fb *fb;
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int flags;
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int gpio_base;
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int (*get_power)(struct device *dev);
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int (*set_power)(struct device *dev, unsigned int on);
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struct sm501_platdata_gpio_i2c *gpio_i2c;
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unsigned int gpio_i2c_nr;
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};
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