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dfcffa467b
This patch makes it possible to control panel pins usage with flags passed from the platform data. Without this patch the sm501fb driver always controls the VBIASEN and FPEN pins. The polarity and use of these pins are very platform specific, so this patch introduces the flags SM501FB_FLAG_PANEL_USE_VBIASEN and SM501FB_FLAG_PANEL_USE_FPEN which enable the use of these pins. This patch is needed to support the a Sharp LQ104V1DG21 lcd panel on SuperH platforms such as R2D-1 and R2D-PLUS boards. Letting the sm501fb driver control the FPEN and VBIASEN pins like today just results in lcd panel flicker. Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
173 lines
4.2 KiB
C
173 lines
4.2 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(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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/* sm501_gpio_set
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*
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* set the state of the given GPIO line
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*/
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extern void sm501_gpio_set(struct device *dev,
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unsigned long gpio,
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unsigned int to,
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unsigned int dir);
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/* sm501_gpio_get
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*
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* get the state of the given GPIO line
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*/
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extern unsigned long sm501_gpio_get(struct device *dev,
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unsigned long gpio);
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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_USE_FPEN (1<<4)
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#define SM501FB_FLAG_PANEL_USE_VBIASEN (1<<5)
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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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struct sm501_platdata_gpio_i2c {
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unsigned int pin_sda;
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unsigned int pin_scl;
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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_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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/* 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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struct sm501_platdata_gpio_i2c *gpio_i2c;
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unsigned int gpio_i2c_nr;
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};
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