[PATCH] mfd: SM501 core driver
authorBen Dooks <ben@fluff.org.uk>
Tue, 20 Feb 2007 21:58:01 +0000 (13:58 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 21 Feb 2007 01:10:14 +0000 (17:10 -0800)
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>
drivers/mfd/Kconfig
drivers/mfd/Makefile
drivers/mfd/sm501.c [new file with mode: 0644]
include/linux/sm501-regs.h [new file with mode: 0644]
include/linux/sm501.h [new file with mode: 0644]

index fc3c8854f43015ca90f2c82d18be5ef1d08d4fb6..ab6e985275b28b3ae9e4addba68732deaeea7b7a 100644 (file)
@@ -2,6 +2,20 @@
 # Multifunction miscellaneous devices
 #
 
+menu "Multifunction device drivers"
+
+config MFD_SM501
+       tristate "Support for Silicon Motion SM501"
+        ---help---
+         This is the core driver for the Silicon Motion SM501 multimedia
+         companion chip. This device is a multifunction device which may
+         provide numerous interfaces including USB host controller USB gadget,
+         Asyncronous Serial ports, Audio functions and a dual display video
+         interface. The device may be connected by PCI or local bus with
+         varying functions enabled.
+
+endmenu
+
 menu "Multimedia Capabilities Port drivers"
        depends on ARCH_SA1100
 
index adb29b5368a8deb7a75758c12df7a3577e6a0648..51432091b323f9edad3fedfa0a0fad5269a9a9f9 100644 (file)
@@ -2,6 +2,8 @@
 # Makefile for multifunction miscellaneous devices
 #
 
+obj-$(CONFIG_MFD_SM501)                += sm501.o
+
 obj-$(CONFIG_MCP)              += mcp-core.o
 obj-$(CONFIG_MCP_SA11X0)       += mcp-sa11x0.o
 obj-$(CONFIG_MCP_UCB1200)      += ucb1x00-core.o
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
new file mode 100644 (file)
index 0000000..5c5a1e2
--- /dev/null
@@ -0,0 +1,1148 @@
+/* linux/drivers/mfd/sm501.c
+ *
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ *
+ * SM501 MFD driver
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+
+#include <linux/sm501.h>
+#include <linux/sm501-regs.h>
+
+#include <asm/io.h>
+
+struct sm501_device {
+       struct list_head                list;
+       struct platform_device          pdev;
+};
+
+struct sm501_devdata {
+       spinlock_t                       reg_lock;
+       struct mutex                     clock_lock;
+       struct list_head                 devices;
+
+       struct device                   *dev;
+       struct resource                 *io_res;
+       struct resource                 *mem_res;
+       struct resource                 *regs_claim;
+       struct sm501_platdata           *platdata;
+
+       int                              unit_power[20];
+       unsigned int                     pdev_id;
+       unsigned int                     irq;
+       void __iomem                    *regs;
+};
+
+#define MHZ (1000 * 1000)
+
+#ifdef DEBUG
+static const unsigned int misc_div[] = {
+       [0]             = 1,
+       [1]             = 2,
+       [2]             = 4,
+       [3]             = 8,
+       [4]             = 16,
+       [5]             = 32,
+       [6]             = 64,
+       [7]             = 128,
+       [8]             = 3,
+       [9]             = 6,
+       [10]            = 12,
+       [11]            = 24,
+       [12]            = 48,
+       [13]            = 96,
+       [14]            = 192,
+       [15]            = 384,
+};
+
+static const unsigned int px_div[] = {
+       [0]             = 1,
+       [1]             = 2,
+       [2]             = 4,
+       [3]             = 8,
+       [4]             = 16,
+       [5]             = 32,
+       [6]             = 64,
+       [7]             = 128,
+       [8]             = 3,
+       [9]             = 6,
+       [10]            = 12,
+       [11]            = 24,
+       [12]            = 48,
+       [13]            = 96,
+       [14]            = 192,
+       [15]            = 384,
+       [16]            = 5,
+       [17]            = 10,
+       [18]            = 20,
+       [19]            = 40,
+       [20]            = 80,
+       [21]            = 160,
+       [22]            = 320,
+       [23]            = 604,
+};
+
+static unsigned long decode_div(unsigned long pll2, unsigned long val,
+                               unsigned int lshft, unsigned int selbit,
+                               unsigned long mask, const unsigned int *dtab)
+{
+       if (val & selbit)
+               pll2 = 288 * MHZ;
+
+       return pll2 / dtab[(val >> lshft) & mask];
+}
+
+#define fmt_freq(x) ((x) / MHZ), ((x) % MHZ), (x)
+
+/* sm501_dump_clk
+ *
+ * Print out the current clock configuration for the device
+*/
+
+static void sm501_dump_clk(struct sm501_devdata *sm)
+{
+       unsigned long misct = readl(sm->regs + SM501_MISC_TIMING);
+       unsigned long pm0 = readl(sm->regs + SM501_POWER_MODE_0_CLOCK);
+       unsigned long pm1 = readl(sm->regs + SM501_POWER_MODE_1_CLOCK);
+       unsigned long pmc = readl(sm->regs + SM501_POWER_MODE_CONTROL);
+       unsigned long sdclk0, sdclk1;
+       unsigned long pll2 = 0;
+
+       switch (misct & 0x30) {
+       case 0x00:
+               pll2 = 336 * MHZ;
+               break;
+       case 0x10:
+               pll2 = 288 * MHZ;
+               break;
+       case 0x20:
+               pll2 = 240 * MHZ;
+               break;
+       case 0x30:
+               pll2 = 192 * MHZ;
+               break;
+       }
+
+       sdclk0 = (misct & (1<<12)) ? pll2 : 288 * MHZ;
+       sdclk0 /= misc_div[((misct >> 8) & 0xf)];
+
+       sdclk1 = (misct & (1<<20)) ? pll2 : 288 * MHZ;
+       sdclk1 /= misc_div[((misct >> 16) & 0xf)];
+
+       dev_dbg(sm->dev, "MISCT=%08lx, PM0=%08lx, PM1=%08lx\n",
+               misct, pm0, pm1);
+
+       dev_dbg(sm->dev, "PLL2 = %ld.%ld MHz (%ld), SDCLK0=%08lx, SDCLK1=%08lx\n",
+               fmt_freq(pll2), sdclk0, sdclk1);
+
+       dev_dbg(sm->dev, "SDRAM: PM0=%ld, PM1=%ld\n", sdclk0, sdclk1);
+
+       dev_dbg(sm->dev, "PM0[%c]: "
+                "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), "
+x               "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n",
+                (pmc & 3 ) == 0 ? '*' : '-',
+                fmt_freq(decode_div(pll2, pm0, 24, 1<<29, 31, px_div)),
+                fmt_freq(decode_div(pll2, pm0, 16, 1<<20, 15, misc_div)),
+                fmt_freq(decode_div(pll2, pm0, 8,  1<<12, 15, misc_div)),
+                fmt_freq(decode_div(pll2, pm0, 0,  1<<4,  15, misc_div)));
+
+       dev_dbg(sm->dev, "PM1[%c]: "
+               "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), "
+               "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n",
+               (pmc & 3 ) == 1 ? '*' : '-',
+               fmt_freq(decode_div(pll2, pm1, 24, 1<<29, 31, px_div)),
+               fmt_freq(decode_div(pll2, pm1, 16, 1<<20, 15, misc_div)),
+               fmt_freq(decode_div(pll2, pm1, 8,  1<<12, 15, misc_div)),
+               fmt_freq(decode_div(pll2, pm1, 0,  1<<4,  15, misc_div)));
+}
+#else
+static void sm501_dump_clk(struct sm501_devdata *sm)
+{
+}
+#endif
+
+/* sm501_sync_regs
+ *
+ * ensure the
+*/
+
+static void sm501_sync_regs(struct sm501_devdata *sm)
+{
+       readl(sm->regs);
+}
+
+/* sm501_misc_control
+ *
+ * alters the misceleneous control parameters
+*/
+
+int sm501_misc_control(struct device *dev,
+                      unsigned long set, unsigned long clear)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+       unsigned long misc;
+       unsigned long save;
+       unsigned long to;
+
+       spin_lock_irqsave(&sm->reg_lock, save);
+
+       misc = readl(sm->regs + SM501_MISC_CONTROL);
+       to = (misc & ~clear) | set;
+
+       if (to != misc) {
+               writel(to, sm->regs + SM501_MISC_CONTROL);
+               sm501_sync_regs(sm);
+
+               dev_dbg(sm->dev, "MISC_CONTROL %08lx\n", misc);
+       }
+
+       spin_unlock_irqrestore(&sm->reg_lock, save);
+       return to;
+}
+
+EXPORT_SYMBOL_GPL(sm501_misc_control);
+
+/* sm501_modify_reg
+ *
+ * Modify a register in the SM501 which may be shared with other
+ * drivers.
+*/
+
+unsigned long sm501_modify_reg(struct device *dev,
+                              unsigned long reg,
+                              unsigned long set,
+                              unsigned long clear)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+       unsigned long data;
+       unsigned long save;
+
+       spin_lock_irqsave(&sm->reg_lock, save);
+
+       data = readl(sm->regs + reg);
+       data |= set;
+       data &= ~clear;
+
+       writel(data, sm->regs + reg);
+       sm501_sync_regs(sm);
+
+       spin_unlock_irqrestore(&sm->reg_lock, save);
+
+       return data;
+}
+
+EXPORT_SYMBOL_GPL(sm501_modify_reg);
+
+unsigned long sm501_gpio_get(struct device *dev,
+                            unsigned long gpio)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+       unsigned long result;
+       unsigned long reg;
+
+       reg = (gpio > 32) ? SM501_GPIO_DATA_HIGH : SM501_GPIO_DATA_LOW;
+       result = readl(sm->regs + reg);
+
+       result >>= (gpio & 31);
+       return result & 1UL;
+}
+
+EXPORT_SYMBOL_GPL(sm501_gpio_get);
+
+void sm501_gpio_set(struct device *dev,
+                   unsigned long gpio,
+                   unsigned int to,
+                   unsigned int dir)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+
+       unsigned long bit = 1 << (gpio & 31);
+       unsigned long base;
+       unsigned long save;
+       unsigned long val;
+
+       base = (gpio > 32) ? SM501_GPIO_DATA_HIGH : SM501_GPIO_DATA_LOW;
+       base += SM501_GPIO;
+
+       spin_lock_irqsave(&sm->reg_lock, save);
+
+       val = readl(sm->regs + base) & ~bit;
+       if (to)
+               val |= bit;
+       writel(val, sm->regs + base);
+
+       val = readl(sm->regs + SM501_GPIO_DDR_LOW) & ~bit;
+       if (dir)
+               val |= bit;
+
+       writel(val, sm->regs + SM501_GPIO_DDR_LOW);
+       sm501_sync_regs(sm);
+
+       spin_unlock_irqrestore(&sm->reg_lock, save);
+
+}
+
+EXPORT_SYMBOL_GPL(sm501_gpio_set);
+
+
+/* sm501_unit_power
+ *
+ * alters the power active gate to set specific units on or off
+ */
+
+int sm501_unit_power(struct device *dev, unsigned int unit, unsigned int to)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+       unsigned long mode;
+       unsigned long gate;
+       unsigned long clock;
+
+       mutex_lock(&sm->clock_lock);
+
+       mode = readl(sm->regs + SM501_POWER_MODE_CONTROL);
+       gate = readl(sm->regs + SM501_CURRENT_GATE);
+       clock = readl(sm->regs + SM501_CURRENT_CLOCK);
+
+       mode &= 3;              /* get current power mode */
+
+       if (unit > ARRAY_SIZE(sm->unit_power)) {
+               dev_err(dev, "%s: bad unit %d\n", __FUNCTION__, unit);
+               goto already;
+       }
+
+       dev_dbg(sm->dev, "%s: unit %d, cur %d, to %d\n", __FUNCTION__, unit,
+               sm->unit_power[unit], to);
+
+       if (to == 0 && sm->unit_power[unit] == 0) {
+               dev_err(sm->dev, "unit %d is already shutdown\n", unit);
+               goto already;
+       }
+
+       sm->unit_power[unit] += to ? 1 : -1;
+       to = sm->unit_power[unit] ? 1 : 0;
+
+       if (to) {
+               if (gate & (1 << unit))
+                       goto already;
+               gate |= (1 << unit);
+       } else {
+               if (!(gate & (1 << unit)))
+                       goto already;
+               gate &= ~(1 << unit);
+       }
+
+       switch (mode) {
+       case 1:
+               writel(gate, sm->regs + SM501_POWER_MODE_0_GATE);
+               writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK);
+               mode = 0;
+               break;
+       case 2:
+       case 0:
+               writel(gate, sm->regs + SM501_POWER_MODE_1_GATE);
+               writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK);
+               mode = 1;
+               break;
+
+       default:
+               return -1;
+       }
+
+       writel(mode, sm->regs + SM501_POWER_MODE_CONTROL);
+       sm501_sync_regs(sm);
+
+       dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n",
+               gate, clock, mode);
+
+       msleep(16);
+
+ already:
+       mutex_unlock(&sm->clock_lock);
+       return gate;
+}
+
+EXPORT_SYMBOL_GPL(sm501_unit_power);
+
+
+/* Perform a rounded division. */
+static long sm501fb_round_div(long num, long denom)
+{
+        /* n / d + 1 / 2 = (2n + d) / 2d */
+        return (2 * num + denom) / (2 * denom);
+}
+
+/* clock value structure. */
+struct sm501_clock {
+       unsigned long mclk;
+       int divider;
+       int shift;
+};
+
+/* sm501_select_clock
+ *
+ * selects nearest discrete clock frequency the SM501 can achive
+ *   the maximum divisor is 3 or 5
+ */
+static unsigned long sm501_select_clock(unsigned long freq,
+                                       struct sm501_clock *clock,
+                                       int max_div)
+{
+       unsigned long mclk;
+       int divider;
+       int shift;
+       long diff;
+       long best_diff = 999999999;
+
+       /* Try 288MHz and 336MHz clocks. */
+       for (mclk = 288000000; mclk <= 336000000; mclk += 48000000) {
+               /* try dividers 1 and 3 for CRT and for panel,
+                  try divider 5 for panel only.*/
+
+               for (divider = 1; divider <= max_div; divider += 2) {
+                       /* try all 8 shift values.*/
+                       for (shift = 0; shift < 8; shift++) {
+                               /* Calculate difference to requested clock */
+                               diff = sm501fb_round_div(mclk, divider << shift) - freq;
+                               if (diff < 0)
+                                       diff = -diff;
+
+                               /* If it is less than the current, use it */
+                               if (diff < best_diff) {
+                                       best_diff = diff;
+
+                                       clock->mclk = mclk;
+                                       clock->divider = divider;
+                                       clock->shift = shift;
+                               }
+                       }
+               }
+       }
+
+       /* Return best clock. */
+       return clock->mclk / (clock->divider << clock->shift);
+}
+
+/* sm501_set_clock
+ *
+ * set one of the four clock sources to the closest available frequency to
+ *  the one specified
+*/
+
+unsigned long sm501_set_clock(struct device *dev,
+                             int clksrc,
+                             unsigned long req_freq)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev);
+       unsigned long mode = readl(sm->regs + SM501_POWER_MODE_CONTROL);
+       unsigned long gate = readl(sm->regs + SM501_CURRENT_GATE);
+       unsigned long clock = readl(sm->regs + SM501_CURRENT_CLOCK);
+       unsigned char reg;
+       unsigned long sm501_freq; /* the actual frequency acheived */
+
+       struct sm501_clock to;
+
+       /* find achivable discrete frequency and setup register value
+        * accordingly, V2XCLK, MCLK and M1XCLK are the same P2XCLK
+        * has an extra bit for the divider */
+
+       switch (clksrc) {
+       case SM501_CLOCK_P2XCLK:
+               /* This clock is divided in half so to achive the
+                * requested frequency the value must be multiplied by
+                * 2. This clock also has an additional pre divisor */
+
+               sm501_freq = (sm501_select_clock(2 * req_freq, &to, 5) / 2);
+               reg=to.shift & 0x07;/* bottom 3 bits are shift */
+               if (to.divider == 3)
+                       reg |= 0x08; /* /3 divider required */
+               else if (to.divider == 5)
+                       reg |= 0x10; /* /5 divider required */
+               if (to.mclk != 288000000)
+                       reg |= 0x20; /* which mclk pll is source */
+               break;
+
+       case SM501_CLOCK_V2XCLK:
+               /* This clock is divided in half so to achive the
+                * requested frequency the value must be multiplied by 2. */
+
+               sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2);
+               reg=to.shift & 0x07;    /* bottom 3 bits are shift */
+               if (to.divider == 3)
+                       reg |= 0x08;    /* /3 divider required */
+               if (to.mclk != 288000000)
+                       reg |= 0x10;    /* which mclk pll is source */
+               break;
+
+       case SM501_CLOCK_MCLK:
+       case SM501_CLOCK_M1XCLK:
+               /* These clocks are the same and not further divided */
+
+               sm501_freq = sm501_select_clock( req_freq, &to, 3);
+               reg=to.shift & 0x07;    /* bottom 3 bits are shift */
+               if (to.divider == 3)
+                       reg |= 0x08;    /* /3 divider required */
+               if (to.mclk != 288000000)
+                       reg |= 0x10;    /* which mclk pll is source */
+               break;
+
+       default:
+               return 0; /* this is bad */
+       }
+
+       mutex_lock(&sm->clock_lock);
+
+       mode = readl(sm->regs + SM501_POWER_MODE_CONTROL);
+       gate = readl(sm->regs + SM501_CURRENT_GATE);
+       clock = readl(sm->regs + SM501_CURRENT_CLOCK);
+
+       clock = clock & ~(0xFF << clksrc);
+       clock |= reg<<clksrc;
+
+       mode &= 3;      /* find current mode */
+
+       switch (mode) {
+       case 1:
+               writel(gate, sm->regs + SM501_POWER_MODE_0_GATE);
+               writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK);
+               mode = 0;
+               break;
+       case 2:
+       case 0:
+               writel(gate, sm->regs + SM501_POWER_MODE_1_GATE);
+               writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK);
+               mode = 1;
+               break;
+
+       default:
+               mutex_unlock(&sm->clock_lock);
+               return -1;
+       }
+
+       writel(mode, sm->regs + SM501_POWER_MODE_CONTROL);
+       sm501_sync_regs(sm);
+
+       dev_info(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n",
+                gate, clock, mode);
+
+       msleep(16);
+       mutex_unlock(&sm->clock_lock);
+
+       sm501_dump_clk(sm);
+
+       return sm501_freq;
+}
+
+EXPORT_SYMBOL_GPL(sm501_set_clock);
+
+/* sm501_find_clock
+ *
+ * finds the closest available frequency for a given clock
+*/
+
+unsigned long sm501_find_clock(int clksrc,
+                              unsigned long req_freq)
+{
+       unsigned long sm501_freq; /* the frequency achiveable by the 501 */
+       struct sm501_clock to;
+
+       switch (clksrc) {
+       case SM501_CLOCK_P2XCLK:
+               sm501_freq = (sm501_select_clock(2 * req_freq, &to, 5) / 2);
+               break;
+
+       case SM501_CLOCK_V2XCLK:
+               sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2);
+               break;
+
+       case SM501_CLOCK_MCLK:
+       case SM501_CLOCK_M1XCLK:
+               sm501_freq = sm501_select_clock(req_freq, &to, 3);
+               break;
+
+       default:
+               sm501_freq = 0;         /* error */
+       }
+
+       return sm501_freq;
+}
+
+EXPORT_SYMBOL_GPL(sm501_find_clock);
+
+static struct sm501_device *to_sm_device(struct platform_device *pdev)
+{
+       return container_of(pdev, struct sm501_device, pdev);
+}
+
+/* sm501_device_release
+ *
+ * A release function for the platform devices we create to allow us to
+ * free any items we allocated
+*/
+
+static void sm501_device_release(struct device *dev)
+{
+       kfree(to_sm_device(to_platform_device(dev)));
+}
+
+/* sm501_create_subdev
+ *
+ * Create a skeleton platform device with resources for passing to a
+ * sub-driver
+*/
+
+static struct platform_device *
+sm501_create_subdev(struct sm501_devdata *sm,
+                   char *name, unsigned int res_count)
+{
+       struct sm501_device *smdev;
+
+       smdev = kzalloc(sizeof(struct sm501_device) +
+                       sizeof(struct resource) * res_count, GFP_KERNEL);
+       if (!smdev)
+               return NULL;
+
+       smdev->pdev.dev.release = sm501_device_release;
+
+       smdev->pdev.name = name;
+       smdev->pdev.id = sm->pdev_id;
+       smdev->pdev.resource = (struct resource *)(smdev+1);
+       smdev->pdev.num_resources = res_count;
+
+       smdev->pdev.dev.parent = sm->dev;
+
+       return &smdev->pdev;
+}
+
+/* sm501_register_device
+ *
+ * Register a platform device created with sm501_create_subdev()
+*/
+
+static int sm501_register_device(struct sm501_devdata *sm,
+                                struct platform_device *pdev)
+{
+       struct sm501_device *smdev = to_sm_device(pdev);
+       int ptr;
+       int ret;
+
+       for (ptr = 0; ptr < pdev->num_resources; ptr++) {
+               printk("%s[%d] flags %08lx: %08llx..%08llx\n",
+                      pdev->name, ptr,
+                      pdev->resource[ptr].flags,
+                      (unsigned long long)pdev->resource[ptr].start,
+                      (unsigned long long)pdev->resource[ptr].end);
+       }
+
+       ret = platform_device_register(pdev);
+
+       if (ret >= 0) {
+               dev_dbg(sm->dev, "registered %s\n", pdev->name);
+               list_add_tail(&smdev->list, &sm->devices);
+       } else
+               dev_err(sm->dev, "error registering %s (%d)\n",
+                       pdev->name, ret);
+
+       return ret;
+}
+
+/* sm501_create_subio
+ *
+ * Fill in an IO resource for a sub device
+*/
+
+static void sm501_create_subio(struct sm501_devdata *sm,
+                              struct resource *res,
+                              resource_size_t offs,
+                              resource_size_t size)
+{
+       res->flags = IORESOURCE_MEM;
+       res->parent = sm->io_res;
+       res->start = sm->io_res->start + offs;
+       res->end = res->start + size - 1;
+}
+
+/* sm501_create_mem
+ *
+ * Fill in an MEM resource for a sub device
+*/
+
+static void sm501_create_mem(struct sm501_devdata *sm,
+                            struct resource *res,
+                            resource_size_t *offs,
+                            resource_size_t size)
+{
+       *offs -= size;          /* adjust memory size */
+
+       res->flags = IORESOURCE_MEM;
+       res->parent = sm->mem_res;
+       res->start = sm->mem_res->start + *offs;
+       res->end = res->start + size - 1;
+}
+
+/* sm501_create_irq
+ *
+ * Fill in an IRQ resource for a sub device
+*/
+
+static void sm501_create_irq(struct sm501_devdata *sm,
+                            struct resource *res)
+{
+       res->flags = IORESOURCE_IRQ;
+       res->parent = NULL;
+       res->start = res->end = sm->irq;
+}
+
+static int sm501_register_usbhost(struct sm501_devdata *sm,
+                                 resource_size_t *mem_avail)
+{
+       struct platform_device *pdev;
+
+       pdev = sm501_create_subdev(sm, "sm501-usb", 3);
+       if (!pdev)
+               return -ENOMEM;
+
+       sm501_create_subio(sm, &pdev->resource[0], 0x40000, 0x20000);
+       sm501_create_mem(sm, &pdev->resource[1], mem_avail, 256*1024);
+       sm501_create_irq(sm, &pdev->resource[2]);
+
+       return sm501_register_device(sm, pdev);
+}
+
+static int sm501_register_display(struct sm501_devdata *sm,
+                                 resource_size_t *mem_avail)
+{
+       struct platform_device *pdev;
+
+       pdev = sm501_create_subdev(sm, "sm501-fb", 4);
+       if (!pdev)
+               return -ENOMEM;
+
+       sm501_create_subio(sm, &pdev->resource[0], 0x80000, 0x10000);
+       sm501_create_subio(sm, &pdev->resource[1], 0x100000, 0x50000);
+       sm501_create_mem(sm, &pdev->resource[2], mem_avail, *mem_avail);
+       sm501_create_irq(sm, &pdev->resource[3]);
+
+       return sm501_register_device(sm, pdev);
+}
+
+/* sm501_dbg_regs
+ *
+ * Debug attribute to attach to parent device to show core registers
+*/
+
+static ssize_t sm501_dbg_regs(struct device *dev,
+                             struct device_attribute *attr, char *buff)
+{
+       struct sm501_devdata *sm = dev_get_drvdata(dev) ;
+       unsigned int reg;
+       char *ptr = buff;
+       int ret;
+
+       for (reg = 0x00; reg < 0x70; reg += 4) {
+               ret = sprintf(ptr, "%08x = %08x\n",
+                             reg, readl(sm->regs + reg));
+               ptr += ret;
+       }
+
+       return ptr - buff;
+}
+
+
+static DEVICE_ATTR(dbg_regs, 0666, sm501_dbg_regs, NULL);
+
+/* sm501_init_reg
+ *
+ * Helper function for the init code to setup a register
+*/
+
+static inline void sm501_init_reg(struct sm501_devdata *sm,
+                                 unsigned long reg,
+                                 struct sm501_reg_init *r)
+{
+       unsigned long tmp;
+
+       tmp = readl(sm->regs + reg);
+       tmp |= r->set;
+       tmp &= ~r->mask;
+       writel(tmp, sm->regs + reg);
+}
+
+/* sm501_init_regs
+ *
+ * Setup core register values
+*/
+
+static void sm501_init_regs(struct sm501_devdata *sm,
+                           struct sm501_initdata *init)
+{
+       sm501_misc_control(sm->dev,
+                          init->misc_control.set,
+                          init->misc_control.mask);
+
+       sm501_init_reg(sm, SM501_MISC_TIMING, &init->misc_timing);
+       sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low);
+       sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high);
+
+       if (init->mclk) {
+               dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
+               sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
+       }
+
+       if (init->m1xclk) {
+               dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk);
+               sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk);
+       }
+}
+
+static unsigned int sm501_mem_local[] = {
+       [0]     = 4*1024*1024,
+       [1]     = 8*1024*1024,
+       [2]     = 16*1024*1024,
+       [3]     = 32*1024*1024,
+       [4]     = 64*1024*1024,
+       [5]     = 2*1024*1024,
+};
+
+/* sm501_init_dev
+ *
+ * Common init code for an SM501
+*/
+
+static int sm501_init_dev(struct sm501_devdata *sm)
+{
+       resource_size_t mem_avail;
+       unsigned long dramctrl;
+       int ret;
+
+       mutex_init(&sm->clock_lock);
+       spin_lock_init(&sm->reg_lock);
+
+       INIT_LIST_HEAD(&sm->devices);
+
+       dramctrl = readl(sm->regs + SM501_DRAM_CONTROL);
+
+       mem_avail = sm501_mem_local[(dramctrl >> 13) & 0x7];
+
+       dev_info(sm->dev, "SM501 At %p: Version %08x, %ld Mb, IRQ %d\n",
+                sm->regs, readl(sm->regs + SM501_DEVICEID),
+                (unsigned long)mem_avail >> 20, sm->irq);
+
+       dev_info(sm->dev, "CurrentGate      %08x\n", readl(sm->regs+0x38));
+       dev_info(sm->dev, "CurrentClock     %08x\n", readl(sm->regs+0x3c));
+       dev_info(sm->dev, "PowerModeControl %08x\n", readl(sm->regs+0x54));
+
+       ret = device_create_file(sm->dev, &dev_attr_dbg_regs);
+       if (ret)
+               dev_err(sm->dev, "failed to create debug regs file\n");
+
+       sm501_dump_clk(sm);
+
+       /* check to see if we have some device initialisation */
+
+       if (sm->platdata) {
+               struct sm501_platdata *pdata = sm->platdata;
+
+               if (pdata->init) {
+                       sm501_init_regs(sm, sm->platdata->init);
+
+                       if (pdata->init->devices & SM501_USE_USB_HOST)
+                               sm501_register_usbhost(sm, &mem_avail);
+               }
+       }
+
+       /* always create a framebuffer */
+       sm501_register_display(sm, &mem_avail);
+
+       return 0;
+}
+
+static int sm501_plat_probe(struct platform_device *dev)
+{
+       struct sm501_devdata *sm;
+       int err;
+
+       sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
+       if (sm == NULL) {
+               dev_err(&dev->dev, "no memory for device data\n");
+               err = -ENOMEM;
+               goto err1;
+       }
+
+       sm->dev = &dev->dev;
+       sm->pdev_id = dev->id;
+       sm->irq = platform_get_irq(dev, 0);
+       sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
+       sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+       sm->platdata = dev->dev.platform_data;
+
+       if (sm->irq < 0) {
+               dev_err(&dev->dev, "failed to get irq resource\n");
+               err = sm->irq;
+               goto err_res;
+       }
+
+       if (sm->io_res == NULL || sm->mem_res == NULL) {
+               dev_err(&dev->dev, "failed to get IO resource\n");
+               err = -ENOENT;
+               goto err_res;
+       }
+
+       sm->regs_claim = request_mem_region(sm->io_res->start,
+                                           0x100, "sm501");
+
+       if (sm->regs_claim == NULL) {
+               dev_err(&dev->dev, "cannot claim registers\n");
+               err= -EBUSY;
+               goto err_res;
+       }
+
+       platform_set_drvdata(dev, sm);
+
+       sm->regs = ioremap(sm->io_res->start,
+                          (sm->io_res->end - sm->io_res->start) - 1);
+
+       if (sm->regs == NULL) {
+               dev_err(&dev->dev, "cannot remap registers\n");
+               err = -EIO;
+               goto err_claim;
+       }
+
+       return sm501_init_dev(sm);
+
+ err_claim:
+       release_resource(sm->regs_claim);
+       kfree(sm->regs_claim);
+ err_res:
+       kfree(sm);
+ err1:
+       return err;
+
+}
+
+/* Initialisation data for PCI devices */
+
+static struct sm501_initdata sm501_pci_initdata = {
+       .gpio_high      = {
+               .set    = 0x3F000000,           /* 24bit panel */
+               .mask   = 0x0,
+       },
+       .misc_timing    = {
+               .set    = 0x010100,             /* SDRAM timing */
+               .mask   = 0x1F1F00,
+       },
+       .misc_control   = {
+               .set    = SM501_MISC_PNL_24BIT,
+               .mask   = 0,
+       },
+
+       .devices        = SM501_USE_ALL,
+       .mclk           = 100 * MHZ,
+       .m1xclk         = 160 * MHZ,
+};
+
+static struct sm501_platdata_fbsub sm501_pdata_fbsub = {
+       .flags          = (SM501FB_FLAG_USE_INIT_MODE |
+                          SM501FB_FLAG_USE_HWCURSOR |
+                          SM501FB_FLAG_USE_HWACCEL |
+                          SM501FB_FLAG_DISABLE_AT_EXIT),
+};
+
+static struct sm501_platdata_fb sm501_fb_pdata = {
+       .fb_route       = SM501_FB_OWN,
+       .fb_crt         = &sm501_pdata_fbsub,
+       .fb_pnl         = &sm501_pdata_fbsub,
+};
+
+static struct sm501_platdata sm501_pci_platdata = {
+       .init           = &sm501_pci_initdata,
+       .fb             = &sm501_fb_pdata,
+};
+
+static int sm501_pci_probe(struct pci_dev *dev,
+                          const struct pci_device_id *id)
+{
+       struct sm501_devdata *sm;
+       int err;
+
+       sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
+       if (sm == NULL) {
+               dev_err(&dev->dev, "no memory for device data\n");
+               err = -ENOMEM;
+               goto err1;
+       }
+
+       /* set a default set of platform data */
+       dev->dev.platform_data = sm->platdata = &sm501_pci_platdata;
+
+       /* set a hopefully unique id for our child platform devices */
+       sm->pdev_id = 32 + dev->devfn;
+
+       pci_set_drvdata(dev, sm);
+
+       err = pci_enable_device(dev);
+       if (err) {
+               dev_err(&dev->dev, "cannot enable device\n");
+               goto err2;
+       }
+
+       sm->dev = &dev->dev;
+       sm->irq = dev->irq;
+
+#ifdef __BIG_ENDIAN
+       /* if the system is big-endian, we most probably have a
+        * translation in the IO layer making the PCI bus little endian
+        * so make the framebuffer swapped pixels */
+
+       sm501_fb_pdata.flags |= SM501_FBPD_SWAP_FB_ENDIAN;
+#endif
+
+       /* check our resources */
+
+       if (!(pci_resource_flags(dev, 0) & IORESOURCE_MEM)) {
+               dev_err(&dev->dev, "region #0 is not memory?\n");
+               err = -EINVAL;
+               goto err3;
+       }
+
+       if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM)) {
+               dev_err(&dev->dev, "region #1 is not memory?\n");
+               err = -EINVAL;
+               goto err3;
+       }
+
+       /* make our resources ready for sharing */
+
+       sm->io_res = &dev->resource[1];
+       sm->mem_res = &dev->resource[0];
+
+       sm->regs_claim = request_mem_region(sm->io_res->start,
+                                           0x100, "sm501");
+       if (sm->regs_claim == NULL) {
+               dev_err(&dev->dev, "cannot claim registers\n");
+               err= -EBUSY;
+               goto err3;
+       }
+
+       sm->regs = ioremap(pci_resource_start(dev, 1),
+                          pci_resource_len(dev, 1));
+
+       if (sm->regs == NULL) {
+               dev_err(&dev->dev, "cannot remap registers\n");
+               err = -EIO;
+               goto err4;
+       }
+
+       sm501_init_dev(sm);
+       return 0;
+
+ err4:
+       release_resource(sm->regs_claim);
+       kfree(sm->regs_claim);
+ err3:
+       pci_disable_device(dev);
+ err2:
+       pci_set_drvdata(dev, NULL);
+       kfree(sm);
+ err1:
+       return err;
+}
+
+static void sm501_remove_sub(struct sm501_devdata *sm,
+                            struct sm501_device *smdev)
+{
+       list_del(&smdev->list);
+       platform_device_unregister(&smdev->pdev);
+}
+
+static void sm501_dev_remove(struct sm501_devdata *sm)
+{
+       struct sm501_device *smdev, *tmp;
+
+       list_for_each_entry_safe(smdev, tmp, &sm->devices, list)
+               sm501_remove_sub(sm, smdev);
+
+       device_remove_file(sm->dev, &dev_attr_dbg_regs);
+}
+
+static void sm501_pci_remove(struct pci_dev *dev)
+{
+       struct sm501_devdata *sm = pci_get_drvdata(dev);
+
+       sm501_dev_remove(sm);
+       iounmap(sm->regs);
+
+       release_resource(sm->regs_claim);
+       kfree(sm->regs_claim);
+
+       pci_set_drvdata(dev, NULL);
+       pci_disable_device(dev);
+}
+
+static int sm501_plat_remove(struct platform_device *dev)
+{
+       struct sm501_devdata *sm = platform_get_drvdata(dev);
+
+       sm501_dev_remove(sm);
+       iounmap(sm->regs);
+
+       release_resource(sm->regs_claim);
+       kfree(sm->regs_claim);
+
+       return 0;
+}
+
+static struct pci_device_id sm501_pci_tbl[] = {
+       { 0x126f, 0x0501, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+       { 0, },
+};
+
+MODULE_DEVICE_TABLE(pci, sm501_pci_tbl);
+
+static struct pci_driver sm501_pci_drv = {
+       .name           = "sm501",
+       .id_table       = sm501_pci_tbl,
+       .probe          = sm501_pci_probe,
+       .remove         = sm501_pci_remove,
+};
+
+static struct platform_driver sm501_plat_drv = {
+       .driver         = {
+               .name   = "sm501",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = sm501_plat_probe,
+       .remove         = sm501_plat_remove,
+};
+
+static int __init sm501_base_init(void)
+{
+       platform_driver_register(&sm501_plat_drv);
+       return pci_module_init(&sm501_pci_drv);
+}
+
+static void __exit sm501_base_exit(void)
+{
+       platform_driver_unregister(&sm501_plat_drv);
+       pci_unregister_driver(&sm501_pci_drv);
+}
+
+module_init(sm501_base_init);
+module_exit(sm501_base_exit);
+
+MODULE_DESCRIPTION("SM501 Core Driver");
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>, Vincent Sanders");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/sm501-regs.h b/include/linux/sm501-regs.h
new file mode 100644 (file)
index 0000000..cc9be4a
--- /dev/null
@@ -0,0 +1,357 @@
+/* sm501-regs.h
+ *
+ * Copyright 2006 Simtec Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Silicon Motion SM501 register definitions
+*/
+
+/* System Configuration area */
+/* System config base */
+#define SM501_SYS_CONFIG               (0x000000)
+
+/* config 1 */
+#define SM501_SYSTEM_CONTROL           (0x000000)
+#define SM501_MISC_CONTROL             (0x000004)
+
+#define SM501_MISC_BUS_SH              (0x0)
+#define SM501_MISC_BUS_PCI             (0x1)
+#define SM501_MISC_BUS_XSCALE          (0x2)
+#define SM501_MISC_BUS_NEC             (0x6)
+#define SM501_MISC_BUS_MASK            (0x7)
+
+#define SM501_MISC_VR_62MB             (1<<3)
+#define SM501_MISC_CDR_RESET           (1<<7)
+#define SM501_MISC_USB_LB              (1<<8)
+#define SM501_MISC_USB_SLAVE           (1<<9)
+#define SM501_MISC_BL_1                        (1<<10)
+#define SM501_MISC_MC                  (1<<11)
+#define SM501_MISC_DAC_POWER           (1<<12)
+#define SM501_MISC_IRQ_INVERT          (1<<16)
+#define SM501_MISC_SH                  (1<<17)
+
+#define SM501_MISC_HOLD_EMPTY          (0<<18)
+#define SM501_MISC_HOLD_8              (1<<18)
+#define SM501_MISC_HOLD_16             (2<<18)
+#define SM501_MISC_HOLD_24             (3<<18)
+#define SM501_MISC_HOLD_32             (4<<18)
+#define SM501_MISC_HOLD_MASK           (7<<18)
+
+#define SM501_MISC_FREQ_12             (1<<24)
+#define SM501_MISC_PNL_24BIT           (1<<25)
+#define SM501_MISC_8051_LE             (1<<26)
+
+
+
+#define SM501_GPIO31_0_CONTROL         (0x000008)
+#define SM501_GPIO63_32_CONTROL                (0x00000C)
+#define SM501_DRAM_CONTROL             (0x000010)
+
+/* command list */
+#define SM501_ARBTRTN_CONTROL          (0x000014)
+
+/* command list */
+#define SM501_COMMAND_LIST_STATUS      (0x000024)
+
+/* interrupt debug */
+#define SM501_RAW_IRQ_STATUS           (0x000028)
+#define SM501_RAW_IRQ_CLEAR            (0x000028)
+#define SM501_IRQ_STATUS               (0x00002C)
+#define SM501_IRQ_MASK                 (0x000030)
+#define SM501_DEBUG_CONTROL            (0x000034)
+
+/* power management */
+#define SM501_CURRENT_GATE             (0x000038)
+#define SM501_CURRENT_CLOCK            (0x00003C)
+#define SM501_POWER_MODE_0_GATE                (0x000040)
+#define SM501_POWER_MODE_0_CLOCK       (0x000044)
+#define SM501_POWER_MODE_1_GATE                (0x000048)
+#define SM501_POWER_MODE_1_CLOCK       (0x00004C)
+#define SM501_SLEEP_MODE_GATE          (0x000050)
+#define SM501_POWER_MODE_CONTROL       (0x000054)
+
+/* power gates for units within the 501 */
+#define SM501_GATE_HOST                        (0)
+#define SM501_GATE_MEMORY              (1)
+#define SM501_GATE_DISPLAY             (2)
+#define SM501_GATE_2D_ENGINE           (3)
+#define SM501_GATE_CSC                 (4)
+#define SM501_GATE_ZVPORT              (5)
+#define SM501_GATE_GPIO                        (6)
+#define SM501_GATE_UART0               (7)
+#define SM501_GATE_UART1               (8)
+#define SM501_GATE_SSP                 (10)
+#define SM501_GATE_USB_HOST            (11)
+#define SM501_GATE_USB_GADGET          (12)
+#define SM501_GATE_UCONTROLLER         (17)
+#define SM501_GATE_AC97                        (18)
+
+/* panel clock */
+#define SM501_CLOCK_P2XCLK             (24)
+/* crt clock */
+#define SM501_CLOCK_V2XCLK             (16)
+/* main clock */
+#define SM501_CLOCK_MCLK               (8)
+/* SDRAM controller clock */
+#define SM501_CLOCK_M1XCLK             (0)
+
+/* config 2 */
+#define SM501_PCI_MASTER_BASE          (0x000058)
+#define SM501_ENDIAN_CONTROL           (0x00005C)
+#define SM501_DEVICEID                 (0x000060)
+/* 0x050100A0 */
+
+#define SM501_PLLCLOCK_COUNT           (0x000064)
+#define SM501_MISC_TIMING              (0x000068)
+#define SM501_CURRENT_SDRAM_CLOCK      (0x00006C)
+
+/* GPIO base */
+#define SM501_GPIO                     (0x010000)
+#define SM501_GPIO_DATA_LOW            (0x00)
+#define SM501_GPIO_DATA_HIGH           (0x04)
+#define SM501_GPIO_DDR_LOW             (0x08)
+#define SM501_GPIO_DDR_HIGH            (0x0C)
+#define SM501_GPIO_IRQ_SETUP           (0x10)
+#define SM501_GPIO_IRQ_STATUS          (0x14)
+#define SM501_GPIO_IRQ_RESET           (0x14)
+
+/* I2C controller base */
+#define SM501_I2C                      (0x010040)
+#define SM501_I2C_BYTE_COUNT           (0x00)
+#define SM501_I2C_CONTROL              (0x01)
+#define SM501_I2C_STATUS               (0x02)
+#define SM501_I2C_RESET                        (0x02)
+#define SM501_I2C_SLAVE_ADDRESS                (0x03)
+#define SM501_I2C_DATA                 (0x04)
+
+/* SSP base */
+#define SM501_SSP                      (0x020000)
+
+/* Uart 0 base */
+#define SM501_UART0                    (0x030000)
+
+/* Uart 1 base */
+#define SM501_UART1                    (0x030020)
+
+/* USB host port base */
+#define SM501_USB_HOST                 (0x040000)
+
+/* USB slave/gadget base */
+#define SM501_USB_GADGET               (0x060000)
+
+/* USB slave/gadget data port base */
+#define SM501_USB_GADGET_DATA          (0x070000)
+
+/* Display contoller/video engine base */
+#define SM501_DC                       (0x080000)
+
+/* common defines for the SM501 address registers */
+#define SM501_ADDR_FLIP                        (1<<31)
+#define SM501_ADDR_EXT                 (1<<27)
+#define SM501_ADDR_CS1                 (1<<26)
+#define SM501_ADDR_MASK                        (0x3f << 26)
+
+#define SM501_FIFO_MASK                        (0x3 << 16)
+#define SM501_FIFO_1                   (0x0 << 16)
+#define SM501_FIFO_3                   (0x1 << 16)
+#define SM501_FIFO_7                   (0x2 << 16)
+#define SM501_FIFO_11                  (0x3 << 16)
+
+/* common registers for panel and the crt */
+#define SM501_OFF_DC_H_TOT             (0x000)
+#define SM501_OFF_DC_V_TOT             (0x008)
+#define SM501_OFF_DC_H_SYNC            (0x004)
+#define SM501_OFF_DC_V_SYNC            (0x00C)
+
+#define SM501_DC_PANEL_CONTROL         (0x000)
+
+#define SM501_DC_PANEL_CONTROL_FPEN    (1<<27)
+#define SM501_DC_PANEL_CONTROL_BIAS    (1<<26)
+#define SM501_DC_PANEL_CONTROL_DATA    (1<<25)
+#define SM501_DC_PANEL_CONTROL_VDD     (1<<24)
+#define SM501_DC_PANEL_CONTROL_DP      (1<<23)
+
+#define SM501_DC_PANEL_CONTROL_TFT_888 (0<<21)
+#define SM501_DC_PANEL_CONTROL_TFT_333 (1<<21)
+#define SM501_DC_PANEL_CONTROL_TFT_444 (2<<21)
+
+#define SM501_DC_PANEL_CONTROL_DE      (1<<20)
+
+#define SM501_DC_PANEL_CONTROL_LCD_TFT (0<<18)
+#define SM501_DC_PANEL_CONTROL_LCD_STN8        (1<<18)
+#define SM501_DC_PANEL_CONTROL_LCD_STN12 (2<<18)
+
+#define SM501_DC_PANEL_CONTROL_CP      (1<<14)
+#define SM501_DC_PANEL_CONTROL_VSP     (1<<13)
+#define SM501_DC_PANEL_CONTROL_HSP     (1<<12)
+#define SM501_DC_PANEL_CONTROL_CK      (1<<9)
+#define SM501_DC_PANEL_CONTROL_TE      (1<<8)
+#define SM501_DC_PANEL_CONTROL_VPD     (1<<7)
+#define SM501_DC_PANEL_CONTROL_VP      (1<<6)
+#define SM501_DC_PANEL_CONTROL_HPD     (1<<5)
+#define SM501_DC_PANEL_CONTROL_HP      (1<<4)
+#define SM501_DC_PANEL_CONTROL_GAMMA   (1<<3)
+#define SM501_DC_PANEL_CONTROL_EN      (1<<2)
+
+#define SM501_DC_PANEL_CONTROL_8BPP    (0<<0)
+#define SM501_DC_PANEL_CONTROL_16BPP   (1<<0)
+#define SM501_DC_PANEL_CONTROL_32BPP   (2<<0)
+
+
+#define SM501_DC_PANEL_PANNING_CONTROL (0x004)
+#define SM501_DC_PANEL_COLOR_KEY       (0x008)
+#define SM501_DC_PANEL_FB_ADDR         (0x00C)
+#define SM501_DC_PANEL_FB_OFFSET       (0x010)
+#define SM501_DC_PANEL_FB_WIDTH                (0x014)
+#define SM501_DC_PANEL_FB_HEIGHT       (0x018)
+#define SM501_DC_PANEL_TL_LOC          (0x01C)
+#define SM501_DC_PANEL_BR_LOC          (0x020)
+#define SM501_DC_PANEL_H_TOT           (0x024)
+#define SM501_DC_PANEL_H_SYNC          (0x028)
+#define SM501_DC_PANEL_V_TOT           (0x02C)
+#define SM501_DC_PANEL_V_SYNC          (0x030)
+#define SM501_DC_PANEL_CUR_LINE                (0x034)
+
+#define SM501_DC_VIDEO_CONTROL         (0x040)
+#define SM501_DC_VIDEO_FB0_ADDR                (0x044)
+#define SM501_DC_VIDEO_FB_WIDTH                (0x048)
+#define SM501_DC_VIDEO_FB0_LAST_ADDR   (0x04C)
+#define SM501_DC_VIDEO_TL_LOC          (0x050)
+#define SM501_DC_VIDEO_BR_LOC          (0x054)
+#define SM501_DC_VIDEO_SCALE           (0x058)
+#define SM501_DC_VIDEO_INIT_SCALE      (0x05C)
+#define SM501_DC_VIDEO_YUV_CONSTANTS   (0x060)
+#define SM501_DC_VIDEO_FB1_ADDR                (0x064)
+#define SM501_DC_VIDEO_FB1_LAST_ADDR   (0x068)
+
+#define SM501_DC_VIDEO_ALPHA_CONTROL   (0x080)
+#define SM501_DC_VIDEO_ALPHA_FB_ADDR   (0x084)
+#define SM501_DC_VIDEO_ALPHA_FB_OFFSET (0x088)
+#define SM501_DC_VIDEO_ALPHA_FB_LAST_ADDR      (0x08C)
+#define SM501_DC_VIDEO_ALPHA_TL_LOC    (0x090)
+#define SM501_DC_VIDEO_ALPHA_BR_LOC    (0x094)
+#define SM501_DC_VIDEO_ALPHA_SCALE     (0x098)
+#define SM501_DC_VIDEO_ALPHA_INIT_SCALE        (0x09C)
+#define SM501_DC_VIDEO_ALPHA_CHROMA_KEY        (0x0A0)
+#define SM501_DC_VIDEO_ALPHA_COLOR_LOOKUP      (0x0A4)
+
+#define SM501_DC_PANEL_HWC_BASE                (0x0F0)
+#define SM501_DC_PANEL_HWC_ADDR                (0x0F0)
+#define SM501_DC_PANEL_HWC_LOC         (0x0F4)
+#define SM501_DC_PANEL_HWC_COLOR_1_2   (0x0F8)
+#define SM501_DC_PANEL_HWC_COLOR_3     (0x0FC)
+
+#define SM501_HWC_EN                   (1<<31)
+
+#define SM501_OFF_HWC_ADDR             (0x00)
+#define SM501_OFF_HWC_LOC              (0x04)
+#define SM501_OFF_HWC_COLOR_1_2                (0x08)
+#define SM501_OFF_HWC_COLOR_3          (0x0C)
+
+#define SM501_DC_ALPHA_CONTROL         (0x100)
+#define SM501_DC_ALPHA_FB_ADDR         (0x104)
+#define SM501_DC_ALPHA_FB_OFFSET       (0x108)
+#define SM501_DC_ALPHA_TL_LOC          (0x10C)
+#define SM501_DC_ALPHA_BR_LOC          (0x110)
+#define SM501_DC_ALPHA_CHROMA_KEY      (0x114)
+#define SM501_DC_ALPHA_COLOR_LOOKUP    (0x118)
+
+#define SM501_DC_CRT_CONTROL           (0x200)
+
+#define SM501_DC_CRT_CONTROL_TVP       (1<<15)
+#define SM501_DC_CRT_CONTROL_CP                (1<<14)
+#define SM501_DC_CRT_CONTROL_VSP       (1<<13)
+#define SM501_DC_CRT_CONTROL_HSP       (1<<12)
+#define SM501_DC_CRT_CONTROL_VS                (1<<11)
+#define SM501_DC_CRT_CONTROL_BLANK     (1<<10)
+#define SM501_DC_CRT_CONTROL_SEL       (1<<9)
+#define SM501_DC_CRT_CONTROL_TE                (1<<8)
+#define SM501_DC_CRT_CONTROL_PIXEL_MASK (0xF << 4)
+#define SM501_DC_CRT_CONTROL_GAMMA     (1<<3)
+#define SM501_DC_CRT_CONTROL_ENABLE    (1<<2)
+
+#define SM501_DC_CRT_CONTROL_8BPP      (0<<0)
+#define SM501_DC_CRT_CONTROL_16BPP     (1<<0)
+#define SM501_DC_CRT_CONTROL_32BPP     (2<<0)
+
+#define SM501_DC_CRT_FB_ADDR           (0x204)
+#define SM501_DC_CRT_FB_OFFSET         (0x208)
+#define SM501_DC_CRT_H_TOT             (0x20C)
+#define SM501_DC_CRT_H_SYNC            (0x210)
+#define SM501_DC_CRT_V_TOT             (0x214)
+#define SM501_DC_CRT_V_SYNC            (0x218)
+#define SM501_DC_CRT_SIGNATURE_ANALYZER        (0x21C)
+#define SM501_DC_CRT_CUR_LINE          (0x220)
+#define SM501_DC_CRT_MONITOR_DETECT    (0x224)
+
+#define SM501_DC_CRT_HWC_BASE          (0x230)
+#define SM501_DC_CRT_HWC_ADDR          (0x230)
+#define SM501_DC_CRT_HWC_LOC           (0x234)
+#define SM501_DC_CRT_HWC_COLOR_1_2     (0x238)
+#define SM501_DC_CRT_HWC_COLOR_3       (0x23C)
+
+#define SM501_DC_PANEL_PALETTE         (0x400)
+
+#define SM501_DC_VIDEO_PALETTE         (0x800)
+
+#define SM501_DC_CRT_PALETTE           (0xC00)
+
+/* Zoom Video port base */
+#define SM501_ZVPORT                   (0x090000)
+
+/* AC97/I2S base */
+#define SM501_AC97                     (0x0A0000)
+
+/* 8051 micro controller base */
+#define SM501_UCONTROLLER              (0x0B0000)
+
+/* 8051 micro controller SRAM base */
+#define SM501_UCONTROLLER_SRAM         (0x0C0000)
+
+/* DMA base */
+#define SM501_DMA                      (0x0D0000)
+
+/* 2d engine base */
+#define SM501_2D_ENGINE                        (0x100000)
+#define SM501_2D_SOURCE                        (0x00)
+#define SM501_2D_DESTINATION           (0x04)
+#define SM501_2D_DIMENSION             (0x08)
+#define SM501_2D_CONTROL               (0x0C)
+#define SM501_2D_PITCH                 (0x10)
+#define SM501_2D_FOREGROUND            (0x14)
+#define SM501_2D_BACKGROUND            (0x18)
+#define SM501_2D_STRETCH               (0x1C)
+#define SM501_2D_COLOR_COMPARE         (0x20)
+#define SM501_2D_COLOR_COMPARE_MASK    (0x24)
+#define SM501_2D_MASK                  (0x28)
+#define SM501_2D_CLIP_TL               (0x2C)
+#define SM501_2D_CLIP_BR               (0x30)
+#define SM501_2D_MONO_PATTERN_LOW      (0x34)
+#define SM501_2D_MONO_PATTERN_HIGH     (0x38)
+#define SM501_2D_WINDOW_WIDTH          (0x3C)
+#define SM501_2D_SOURCE_BASE           (0x40)
+#define SM501_2D_DESTINATION_BASE      (0x44)
+#define SM501_2D_ALPHA                 (0x48)
+#define SM501_2D_WRAP                  (0x4C)
+#define SM501_2D_STATUS                        (0x50)
+
+#define SM501_CSC_Y_SOURCE_BASE                (0xC8)
+#define SM501_CSC_CONSTANTS            (0xCC)
+#define SM501_CSC_Y_SOURCE_X           (0xD0)
+#define SM501_CSC_Y_SOURCE_Y           (0xD4)
+#define SM501_CSC_U_SOURCE_BASE                (0xD8)
+#define SM501_CSC_V_SOURCE_BASE                (0xDC)
+#define SM501_CSC_SOURCE_DIMENSION     (0xE0)
+#define SM501_CSC_SOURCE_PITCH         (0xE4)
+#define SM501_CSC_DESTINATION          (0xE8)
+#define SM501_CSC_DESTINATION_DIMENSION        (0xEC)
+#define SM501_CSC_DESTINATION_PITCH    (0xF0)
+#define SM501_CSC_SCALE_FACTOR         (0xF4)
+#define SM501_CSC_DESTINATION_BASE     (0xF8)
+#define SM501_CSC_CONTROL              (0xFC)
+
+/* 2d engine data port base */
+#define SM501_2D_ENGINE_DATA           (0x110000)
diff --git a/include/linux/sm501.h b/include/linux/sm501.h
new file mode 100644 (file)
index 0000000..9e3aaad
--- /dev/null
@@ -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;
+};