[PATCH] mfd: SM501 core driver

This driver provides the core functionality of the SM501, which is a
multi-function chip including two framebuffers, video acceleration, USB,
and many other peripheral blocks.

The driver exports a number of entries for the peripheral drivers to use.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Vincent Sanders <vince@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/include/linux/sm501.h b/include/linux/sm501.h
new file mode 100644
index 000000000000..9e3aaad6fe4d
--- /dev/null
+++ b/include/linux/sm501.h
@@ -0,0 +1,170 @@
+/* include/linux/sm501.h
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      Vincent Sanders <vince@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+extern int sm501_unit_power(struct device *dev,
+                            unsigned int unit, unsigned int to);
+
+extern unsigned long sm501_set_clock(struct device *dev,
+                                     int clksrc, unsigned long freq);
+
+extern unsigned long sm501_find_clock(int clksrc, unsigned long req_freq);
+
+/* sm501_misc_control
+ *
+ * Modify the SM501's MISC_CONTROL register
+*/
+
+extern int sm501_misc_control(struct device *dev,
+                              unsigned long set, unsigned long clear);
+
+/* sm501_modify_reg
+ *
+ * Modify a register in the SM501 which may be shared with other
+ * drivers.
+*/
+
+extern unsigned long sm501_modify_reg(struct device *dev,
+                                      unsigned long reg,
+                                      unsigned long set,
+                                      unsigned long clear);
+
+/* sm501_gpio_set
+ *
+ * set the state of the given GPIO line
+*/
+
+extern void sm501_gpio_set(struct device *dev,
+                           unsigned long gpio,
+                           unsigned int to,
+                           unsigned int dir);
+
+/* sm501_gpio_get
+ *
+ * get the state of the given GPIO line
+*/
+
+extern unsigned long sm501_gpio_get(struct device *dev,
+                                    unsigned long gpio);
+
+
+/* Platform data definitions */
+
+#define SM501FB_FLAG_USE_INIT_MODE      (1<<0)
+#define SM501FB_FLAG_DISABLE_AT_EXIT    (1<<1)
+#define SM501FB_FLAG_USE_HWCURSOR       (1<<2)
+#define SM501FB_FLAG_USE_HWACCEL        (1<<3)
+
+struct sm501_platdata_fbsub {
+        struct fb_videomode     *def_mode;
+        unsigned int             def_bpp;
+        unsigned long            max_mem;
+        unsigned int             flags;
+};
+
+enum sm501_fb_routing {
+        SM501_FB_OWN            = 0,    /* CRT=>CRT, Panel=>Panel */
+        SM501_FB_CRT_PANEL      = 1,    /* Panel=>CRT, Panel=>Panel */
+};
+
+/* sm501_platdata_fb flag field bit definitions */
+
+#define SM501_FBPD_SWAP_FB_ENDIAN       (1<<0)  /* need to endian swap */
+
+/* sm501_platdata_fb
+ *
+ * configuration data for the framebuffer driver
+*/
+
+struct sm501_platdata_fb {
+        enum sm501_fb_routing            fb_route;
+        unsigned int                     flags;
+        struct sm501_platdata_fbsub     *fb_crt;
+        struct sm501_platdata_fbsub     *fb_pnl;
+};
+
+/* gpio i2c */
+
+struct sm501_platdata_gpio_i2c {
+        unsigned int            pin_sda;
+        unsigned int            pin_scl;
+};
+
+/* sm501_initdata
+ *
+ * use for initialising values that may not have been setup
+ * before the driver is loaded.
+*/
+
+struct sm501_reg_init {
+        unsigned long           set;
+        unsigned long           mask;
+};
+
+#define SM501_USE_USB_HOST      (1<<0)
+#define SM501_USE_USB_SLAVE     (1<<1)
+#define SM501_USE_SSP0          (1<<2)
+#define SM501_USE_SSP1          (1<<3)
+#define SM501_USE_UART0         (1<<4)
+#define SM501_USE_UART1         (1<<5)
+#define SM501_USE_FBACCEL       (1<<6)
+#define SM501_USE_AC97          (1<<7)
+#define SM501_USE_I2S           (1<<8)
+
+#define SM501_USE_ALL           (0xffffffff)
+
+struct sm501_initdata {
+        struct sm501_reg_init   gpio_low;
+        struct sm501_reg_init   gpio_high;
+        struct sm501_reg_init   misc_timing;
+        struct sm501_reg_init   misc_control;
+
+        unsigned long           devices;
+        unsigned long           mclk;           /* non-zero to modify */
+        unsigned long           m1xclk;         /* non-zero to modify */
+};
+
+/* sm501_init_gpio
+ *
+ * default gpio settings
+*/
+
+struct sm501_init_gpio {
+        struct sm501_reg_init   gpio_data_low;
+        struct sm501_reg_init   gpio_data_high;
+        struct sm501_reg_init   gpio_ddr_low;
+        struct sm501_reg_init   gpio_ddr_high;
+};
+
+/* sm501_platdata
+ *
+ * This is passed with the platform device to allow the board
+ * to control the behaviour of the SM501 driver(s) which attach
+ * to the device.
+ *
+*/
+
+struct sm501_platdata {
+        struct sm501_initdata           *init;
+        struct sm501_init_gpio          *init_gpiop;
+        struct sm501_platdata_fb        *fb;
+
+        struct sm501_platdata_gpio_i2c  *gpio_i2c;
+        unsigned int                     gpio_i2c_nr;
+};