[U-Boot] [PATCH/RFC, 2/2] I2C rework -- what do you think
ksi at koi8.net
ksi at koi8.net
Sat Jan 24 02:13:00 CET 2009
diff -purN u-boot.orig/drivers/i2c/fsl_uni_i2c.c u-boot/drivers/i2c/fsl_uni_i2c.c
--- u-boot.orig/drivers/i2c/fsl_uni_i2c.c 1969-12-31 16:00:00.000000000 -0800
+++ u-boot/drivers/i2c/fsl_uni_i2c.c 2009-01-23 16:01:48.000000000 -0800
@@ -0,0 +1,461 @@
+/*
+ * Copyright (c) 2009 Sergey Kubushyn <ksi at koi8.net>
+ *
+ * Changes for multibus/multiadapter I2C support.
+ *
+ * Copyright 2006 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * 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
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_FSL_UNI_I2C
+
+#include <command.h>
+#include <i2c.h> /* Functional interface */
+
+#include <asm/io.h>
+#include <asm/fsl_i2c.h> /* HW definitions */
+
+#define I2C_TIMEOUT (CONFIG_SYS_HZ / 4)
+
+#define I2C_READ_BIT 1
+#define I2C_WRITE_BIT 0
+
+#define FSL_NAME(arg) "fsl_i2c@" MK_NAME(arg)
+#define MK_NAME(arg) #arg
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct fsl_i2c *i2c_dev[2] = {
+ (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_FSL_I2C_OFFSET),
+#ifdef CONFIG_SYS_FSL_I2C2_OFFSET
+ (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_FSL_I2C2_OFFSET)
+#endif
+};
+
+/* I2C speed map for a DFSR value of 1 */
+
+/*
+ * Map I2C frequency dividers to FDR and DFSR values
+ *
+ * This structure is used to define the elements of a table that maps I2C
+ * frequency divider (I2C clock rate divided by I2C bus speed) to a value to be
+ * programmed into the Frequency Divider Ratio (FDR) and Digital Filter
+ * Sampling Rate (DFSR) registers.
+ *
+ * The actual table should be defined in the board file, and it must be called
+ * fsl_i2c_speed_map[].
+ *
+ * The last entry of the table must have a value of {-1, X}, where X is same
+ * FDR/DFSR values as the second-to-last entry. This guarantees that any
+ * search through the array will always find a match.
+ *
+ * The values of the divider must be in increasing numerical order, i.e.
+ * fsl_i2c_speed_map[x+1].divider > fsl_i2c_speed_map[x].divider.
+ *
+ * For this table, the values are based on a value of 1 for the DFSR
+ * register. See the application note AN2919 "Determining the I2C Frequency
+ * Divider Ratio for SCL"
+ *
+ * ColdFire I2C frequency dividers for FDR values are different from
+ * PowerPC. The protocol to use the I2C module is still the same.
+ * A different table is defined and are based on MCF5xxx user manual.
+ *
+ */
+static const struct {
+ unsigned short divider;
+#ifdef __PPC__
+ u8 dfsr;
+#endif
+ u8 fdr;
+} fsl_i2c_speed_map[] = {
+#ifdef __PPC__
+ {160, 1, 32}, {192, 1, 33}, {224, 1, 34}, {256, 1, 35},
+ {288, 1, 0}, {320, 1, 1}, {352, 6, 1}, {384, 1, 2}, {416, 6, 2},
+ {448, 1, 38}, {480, 1, 3}, {512, 1, 39}, {544, 11, 3}, {576, 1, 4},
+ {608, 22, 3}, {640, 1, 5}, {672, 32, 3}, {704, 11, 5}, {736, 43, 3},
+ {768, 1, 6}, {800, 54, 3}, {832, 11, 6}, {896, 1, 42}, {960, 1, 7},
+ {1024, 1, 43}, {1088, 22, 7}, {1152, 1, 8}, {1216, 43, 7}, {1280, 1, 9},
+ {1408, 22, 9}, {1536, 1, 10}, {1664, 22, 10}, {1792, 1, 46},
+ {1920, 1, 11}, {2048, 1, 47}, {2176, 43, 11}, {2304, 1, 12},
+ {2560, 1, 13}, {2816, 43, 13}, {3072, 1, 14}, {3328, 43, 14},
+ {3584, 1, 50}, {3840, 1, 15}, {4096, 1, 51}, {4608, 1, 16},
+ {5120, 1, 17}, {6144, 1, 18}, {7168, 1, 54}, {7680, 1, 19},
+ {8192, 1, 55}, {9216, 1, 20}, {10240, 1, 21}, {12288, 1, 22},
+ {14336, 1, 58}, {15360, 1, 23}, {16384, 1, 59}, {18432, 1, 24},
+ {20480, 1, 25}, {24576, 1, 26}, {28672, 1, 62}, {30720, 1, 27},
+ {32768, 1, 63}, {36864, 1, 28}, {40960, 1, 29}, {49152, 1, 30},
+ {61440, 1, 31}, {-1, 1, 31}
+#elif defined(__M68K__)
+ {20, 32}, {22, 33}, {24, 34}, {26, 35},
+ {28, 0}, {28, 36}, {30, 1}, {32, 37},
+ {34, 2}, {36, 38}, {40, 3}, {40, 39},
+ {44, 4}, {48, 5}, {48, 40}, {56, 6},
+ {56, 41}, {64, 42}, {68, 7}, {72, 43},
+ {80, 8}, {80, 44}, {88, 9}, {96, 41},
+ {104, 10}, {112, 42}, {128, 11}, {128, 43},
+ {144, 12}, {160, 13}, {160, 48}, {192, 14},
+ {192, 49}, {224, 50}, {240, 15}, {256, 51},
+ {288, 16}, {320, 17}, {320, 52}, {384, 18},
+ {384, 53}, {448, 54}, {480, 19}, {512, 55},
+ {576, 20}, {640, 21}, {640, 56}, {768, 22},
+ {768, 57}, {960, 23}, {896, 58}, {1024, 59},
+ {1152, 24}, {1280, 25}, {1280, 60}, {1536, 26},
+ {1536, 61}, {1792, 62}, {1920, 27}, {2048, 63},
+ {2304, 28}, {2560, 29}, {3072, 30}, {3840, 31},
+ {-1, 31}
+#endif
+};
+
+i2c_adap_t fsl_i2c_adap[];
+
+/**
+ * Set the I2C bus speed for a given I2C device
+ *
+ * @param dev: the I2C device
+ * @i2c_clk: I2C bus clock frequency
+ * @speed: the desired speed of the bus
+ *
+ * The I2C device must be stopped before calling this function.
+ *
+ * The return value is the actual bus speed that is set.
+ */
+static unsigned int set_i2c_bus_speed(const struct fsl_i2c *dev,
+ unsigned int i2c_clk, unsigned int speed)
+{
+ unsigned short divider = min(i2c_clk / speed, (unsigned short) -1);
+ unsigned int i;
+
+ /*
+ * We want to choose an FDR/DFSR that generates an I2C bus speed that
+ * is equal to or lower than the requested speed. That means that we
+ * want the first divider that is equal to or greater than the
+ * calculated divider.
+ */
+
+ for (i = 0; i < ARRAY_SIZE(fsl_i2c_speed_map); i++)
+ if (fsl_i2c_speed_map[i].divider >= divider) {
+ u8 fdr;
+#ifdef __PPC__
+ u8 dfsr;
+ dfsr = fsl_i2c_speed_map[i].dfsr;
+#endif
+ fdr = fsl_i2c_speed_map[i].fdr;
+ speed = i2c_clk / fsl_i2c_speed_map[i].divider;
+ writeb(fdr, &dev->fdr); /* set bus speed */
+#ifdef __PPC__
+ writeb(dfsr, &dev->dfsrr); /* set default filter */
+#endif
+ break;
+ }
+
+ return speed;
+}
+
+
+static void __i2c_init(int adap_no, int speed, int slaveadd)
+{
+ unsigned int temp;
+
+ writeb(0, &i2c_dev[adap_no]->cr); /* stop I2C controller */
+ udelay(5); /* let it shutdown in peace */
+ temp = set_i2c_bus_speed(i2c_dev[adap_no], gd->i2c1_clk, speed);
+ if (gd->flags & GD_FLG_RELOC) {
+ fsl_i2c_adap[adap_no].speed = temp;
+ fsl_i2c_adap[adap_no].slaveaddr = slaveadd;
+ }
+ writeb(slaveadd << 1, &i2c_dev[adap_no]->adr); /* write slave address */
+ writeb(0x0, &i2c_dev[adap_no]->sr); /* clear status register */
+ writeb(I2C_CR_MEN, &i2c_dev[adap_no]->cr); /* start I2C controller */
+}
+
+
+static __inline__ int i2c_wait4bus(int adap_no)
+{
+ unsigned long long timeval = get_ticks();
+
+ while (readb(&i2c_dev[adap_no]->sr) & I2C_SR_MBB) {
+ if ((get_ticks() - timeval) > usec2ticks(I2C_TIMEOUT))
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static __inline__ int i2c_wait(int adap_no, int write)
+{
+ u32 csr;
+ unsigned long long timeval = get_ticks();
+
+ do {
+ csr = readb(&i2c_dev[adap_no]->sr);
+ if (!(csr & I2C_SR_MIF))
+ continue;
+
+ writeb(0x0, &i2c_dev[adap_no]->sr);
+
+ if (csr & I2C_SR_MAL) {
+ debug("i2c_wait: MAL\n");
+ return -1;
+ }
+
+ if (!(csr & I2C_SR_MCF)) {
+ debug("i2c_wait: unfinished\n");
+ return -1;
+ }
+
+ if (write == I2C_WRITE_BIT && (csr & I2C_SR_RXAK)) {
+ debug("i2c_wait: No RXACK\n");
+ return -1;
+ }
+
+ return 0;
+ } while ((get_ticks() - timeval) < usec2ticks(I2C_TIMEOUT));
+
+ debug("i2c_wait: timed out\n");
+ return -1;
+}
+
+
+static __inline__ int i2c_write_addr (int adap_no, u8 dev, u8 dir, int rsta)
+{
+ writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_MTX
+ | (rsta ? I2C_CR_RSTA : 0),
+ &i2c_dev[adap_no]->cr);
+
+ writeb((dev << 1) | dir, &i2c_dev[adap_no]->dr);
+
+ if (i2c_wait(adap_no, I2C_WRITE_BIT) < 0)
+ return 0;
+
+ return 1;
+}
+
+
+static __inline__ int i2c_write_data(int adap_no, u8 *data, int length)
+{
+ int i;
+
+ writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_MTX,
+ &i2c_dev[adap_no]->cr);
+
+ for (i = 0; i < length; i++) {
+ writeb(data[i], &i2c_dev[adap_no]->dr);
+
+ if (i2c_wait(adap_no, I2C_WRITE_BIT) < 0)
+ break;
+ }
+
+ return i;
+}
+
+
+static __inline__ int i2c_read_data(int adap_no, u8 *data, int length)
+{
+ int i;
+
+ writeb(I2C_CR_MEN | I2C_CR_MSTA | ((length == 1) ? I2C_CR_TXAK : 0),
+ &i2c_dev[adap_no]->cr);
+
+ /* dummy read */
+ readb(&i2c_dev[adap_no]->dr);
+
+ for (i = 0; i < length; i++) {
+ if (i2c_wait(adap_no, I2C_READ_BIT) < 0)
+ break;
+
+ /* Generate ack on last next to last byte */
+ if (i == length - 2)
+ writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_TXAK,
+ &i2c_dev[adap_no]->cr);
+
+ /* Generate stop on last byte */
+ if (i == length - 1)
+ writeb(I2C_CR_MEN | I2C_CR_TXAK, &i2c_dev[adap_no]->cr);
+
+ data[i] = readb(&i2c_dev[adap_no]->dr);
+ }
+
+ return i;
+}
+
+
+static int __i2c_read(int adap_no, u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ int i = -1; /* signal error */
+ u8 *a = (u8*)&addr;
+
+ if (i2c_wait4bus(adap_no) >= 0
+ && i2c_write_addr(adap_no, dev, I2C_WRITE_BIT, 0) != 0
+ && i2c_write_data(adap_no, &a[4 - alen], alen) == alen)
+ i = 0; /* No error so far */
+
+ if (length
+ && i2c_write_addr(adap_no, dev, I2C_READ_BIT, 1) != 0)
+ i = i2c_read_data(adap_no, data, length);
+
+ writeb(I2C_CR_MEN, &i2c_dev[adap_no]->cr);
+
+ if (i == length)
+ return 0;
+
+ return -1;
+}
+
+
+static int __i2c_write(int adap_no, u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ int i = -1; /* signal error */
+ u8 *a = (u8*)&addr;
+
+ if (i2c_wait4bus(adap_no) >= 0
+ && i2c_write_addr(adap_no, dev, I2C_WRITE_BIT, 0) != 0
+ && i2c_write_data(adap_no, &a[4 - alen], alen) == alen) {
+ i = i2c_write_data(adap_no, data, length);
+ }
+
+ writeb(I2C_CR_MEN, &i2c_dev[adap_no]->cr);
+
+ if (i == length)
+ return 0;
+
+ return -1;
+}
+
+
+static int __i2c_probe(int adap_no, uchar chip)
+{
+ /* For unknow reason the controller will ACK when
+ * probing for a slave with the same address, so skip
+ * it.
+ */
+ if (chip == (readb(&i2c_dev[adap_no]->adr) >> 1))
+ return -1;
+
+ return __i2c_read(adap_no, chip, 0, 0, NULL, 0);
+}
+
+
+static int __i2c_set_bus_speed(int adap_no, unsigned int speed)
+{
+ unsigned int i2c_clk = (adap_no == 1) ? gd->i2c2_clk : gd->i2c1_clk;
+
+ writeb(0, &i2c_dev[adap_no]->cr); /* stop controller */
+ fsl_i2c_adap[adap_no].speed =
+ set_i2c_bus_speed(i2c_dev[adap_no], i2c_clk, speed);
+ writeb(I2C_CR_MEN, &i2c_dev[adap_no]->cr); /* start controller */
+
+ return 0;
+}
+
+
+/* Wrappers for the first controller */
+static void fsl_i2c1_init(int speed, int slaveadd)
+{
+ __i2c_init(0, speed, slaveadd);
+}
+
+static int fsl_i2c1_read(u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ return(__i2c_read(0, dev, addr, alen, data, length));
+}
+
+static int fsl_i2c1_write(u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ return(__i2c_write(0, dev, addr, alen, data, length));
+}
+
+static int fsl_i2c1_probe(uchar chip)
+{
+ return(__i2c_probe(0, chip));
+}
+
+static unsigned int fsl_i2c1_set_bus_speed(unsigned int speed)
+{
+ return(__i2c_set_bus_speed(0, speed));
+}
+
+static unsigned int fsl_i2c1_get_bus_speed(void)
+{
+ return(fsl_i2c_adap[0].speed);
+}
+
+
+/* Second controller */
+#ifdef CONFIG_SYS_FSL_I2C2_OFFSET
+static void fsl_i2c2_init(int speed, int slaveadd)
+{
+ __i2c_init(1, speed, slaveadd);
+}
+
+static int fsl_i2c2_read(u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ return(__i2c_read(1, dev, addr, alen, data, length));
+}
+
+static int fsl_i2c2_write(u8 dev, uint addr, int alen, u8 *data, int length)
+{
+ return(__i2c_write(1, dev, addr, alen, data, length));
+}
+
+static int fsl_i2c2_probe(uchar chip)
+{
+ return(__i2c_probe(1, chip));
+}
+
+static unsigned int fsl_i2c2_set_bus_speed(unsigned int speed)
+{
+ return(__i2c_set_bus_speed(1, speed));
+}
+
+static unsigned int fsl_i2c2_get_bus_speed(void)
+{
+ return(fsl_i2c_adap[1].speed);
+}
+#endif
+
+i2c_adap_t fsl_i2c_adap[2] = {
+ {
+ .init = fsl_i2c1_init,
+ .probe = fsl_i2c1_probe,
+ .read = fsl_i2c1_read,
+ .write = fsl_i2c1_write,
+ .set_bus_speed = fsl_i2c1_set_bus_speed,
+ .get_bus_speed = fsl_i2c1_get_bus_speed,
+ .speed = CONFIG_SYS_FSL_I2C_SPEED,
+ .slaveaddr = CONFIG_SYS_FSL_I2C_SLAVE,
+ .init_done = 0,
+ .name = FSL_NAME(CONFIG_SYS_FSL_I2C_OFFSET)
+ },
+#ifdef CONFIG_SYS_FSL_I2C2_OFFSET
+ {
+ .init = fsl_i2c2_init,
+ .probe = fsl_i2c2_probe,
+ .read = fsl_i2c2_read,
+ .write = fsl_i2c2_write,
+ .set_bus_speed = fsl_i2c2_set_bus_speed,
+ .get_bus_speed = fsl_i2c2_get_bus_speed,
+ .speed = CONFIG_SYS_FSL_I2C2_SPEED,
+ .slaveaddr = CONFIG_SYS_FSL_I2C2_SLAVE,
+ .init_done = 0,
+ .name = FSL_NAME(CONFIG_SYS_FSL_I2C2_OFFSET)
+ }
+#endif
+};
+
+#endif /* CONFIG_FSL_UNI_I2C */
diff -purN u-boot.orig/drivers/i2c/sm502_i2c.c u-boot/drivers/i2c/sm502_i2c.c
--- u-boot.orig/drivers/i2c/sm502_i2c.c 1969-12-31 16:00:00.000000000 -0800
+++ u-boot/drivers/i2c/sm502_i2c.c 2009-01-23 16:01:48.000000000 -0800
@@ -0,0 +1,339 @@
+/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi at koi8.net>
+ *
+ * Driver for Silicon Motion SM501/SM502 I2C interface.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_SM502_I2C
+
+#include <command.h>
+#include <i2c.h>
+
+#include <sm501-regs.h>
+#include <asm/io.h>
+
+/* I2C registers field definitions */
+/* --------------------------------*/
+/* I2C_CONTROL (R/W) */
+#define SM501_I2C_ENABLE (1<<0)
+#define SM501_I2C_SPEED (1<<1)
+#define SM501_I2C_START (1<<2)
+#define SM501_I2C_IRQ_ENA (1<<4)
+#define SM501_I2C_IRQ_ACK (1<<5)
+#define SM501_I2C_RPT_START_ENA (1<<6)
+/* I2C_STATUS (R/O) */
+#define SM501_I2C_BUS_BUSY (1<<0)
+#define SM501_I2C_NACK (1<<1)
+#define SM501_I2C_BUS_ERROR (1<<2)
+#define SM501_I2C_XFER_DONE (1<<3)
+/* I2C_RESET (W/O) */
+#define SM501_I2C_CLEAR (1<<2)
+
+#define SM501_I2C_MAX_COUNT 16
+
+#define SM501_I2C_READ 1
+#define SM501_I2C_WRITE 0
+
+#define SM501_I2C_TIMEOUT (1<<7)
+
+#define SM501_CHECK_NACK() \
+ do {\
+ if (tmp & (SM501_I2C_NACK | SM501_I2C_BUS_ERROR)) {\
+ tmp = read_i2c_reg(SM501_I2C_CONTROL) & SM501_I2C_SPEED;\
+ write_i2c_reg(SM501_I2C_CONTROL, tmp);\
+ return(1);\
+ }\
+ } while (0)
+
+
+DECLARE_GLOBAL_DATA_PTR;
+
+i2c_adap_t sm501_i2c_adap;
+
+static __inline__ u_int8_t read_i2c_reg(unsigned long offset)
+{
+ return(readb(sm501_iomem_base + SM501_I2C + offset));
+}
+
+static __inline__ void write_i2c_reg(unsigned long offset, u_int8_t data)
+{
+ writeb(data, sm501_iomem_base + SM501_I2C + offset);
+ __asm__("sync;isync;msync");
+#ifndef CONFIG_SYS_SM501_BASEADDR
+ /* Dummy read to push it through PCI */
+ readb(sm501_iomem_base + SM501_I2C + offset);
+#endif
+}
+
+static int poll_i2c_status(u_int8_t mask, int timeout)
+{
+ u_int8_t stat;
+ int i;
+
+ i = 0;
+
+ do {
+ stat = read_i2c_reg(SM501_I2C_STATUS);
+ if (stat & mask) {
+ return(stat);
+ }
+ udelay(1000);
+
+ } while (i++ < timeout);
+
+ return(stat | SM501_I2C_TIMEOUT);
+}
+
+static int wait_for_bus(void)
+{
+ int timeout = 10;
+
+ while ((read_i2c_reg(SM501_I2C_STATUS) & SM501_I2C_BUS_BUSY) && timeout--) {
+ udelay (1000);
+ }
+
+ if (timeout <= 0) {
+ printf ("SM501_I2C timed out in wait_for_bb: I2C_STAT=%x\n",
+ read_i2c_reg(SM501_I2C_STATUS));
+ return(1);
+ }
+
+ return(0);
+}
+
+static void sm501_i2c_init(int speed, int slaveadd)
+{
+ unsigned long tmpl;
+
+ /* Set GPIO pins for hardware I2C */
+ tmpl = readl(sm501_iomem_base + SM501_GPIO + SM501_GPIO_DATA_HIGH);
+ tmpl |= 0x0000c000;
+ writel(tmpl, sm501_iomem_base + SM501_GPIO + SM501_GPIO_DATA_HIGH);
+ __asm__("sync;isync;msync");
+#ifndef CONFIG_SYS_SM501_BASEADDR
+ /* Dummy read to push is through PCI */
+ readl(sm501_iomem_base + SM501_GPIO + SM501_GPIO_DATA_HIGH);
+#endif
+
+ /* SM501/502 only allows 100 or 400 KHz speed (standard or fast) */
+ if (speed <= 100000)
+ write_i2c_reg(SM501_I2C_CONTROL, SM501_I2C_ENABLE);
+ else
+ write_i2c_reg(SM501_I2C_CONTROL, SM501_I2C_ENABLE | SM501_I2C_SPEED);
+
+ if (gd->flags & GD_FLG_RELOC) {
+ sm501_i2c_adap.speed = speed <= 100000 ? 100000 : 400000;
+ sm501_i2c_adap.init_done = 1;
+ }
+}
+
+
+static int sm501_i2c_probe(u_int8_t chip)
+{
+ u_int8_t tmp;
+
+ /* Fail if I2C address is invalid */
+ if (chip > 0x7f) {return(1);}
+
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ write_i2c_reg(SM501_I2C_CONTROL, tmp & ~(SM501_I2C_START | SM501_I2C_ENABLE));
+ if (wait_for_bus()) {return(1);}
+
+ /* try to read one byte from current (or only) address */
+ write_i2c_reg(SM501_I2C_CONTROL, tmp | SM501_I2C_ENABLE);
+ write_i2c_reg(SM501_I2C_BYTE_COUNT, 0);
+ write_i2c_reg(SM501_I2C_SLAVE_ADDRESS, (chip << 1) | SM501_I2C_READ);
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ write_i2c_reg(SM501_I2C_CONTROL, tmp | SM501_I2C_START);
+ udelay (1000);
+
+ if (!(read_i2c_reg(SM501_I2C_STATUS) & (SM501_I2C_NACK | SM501_I2C_BUS_ERROR))) {
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ write_i2c_reg(SM501_I2C_CONTROL, tmp & ~(SM501_I2C_START | SM501_I2C_ENABLE));
+ if (wait_for_bus()) {return(1);}
+ return(0);
+ }
+
+ return(1);
+}
+
+
+static int sm501_i2c_read(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len)
+{
+ u_int8_t tmp;
+ u_int8_t *ptr = buf;
+ int i, bytes_read = 0;
+
+ if ((alen < 0) || (alen > 2)) {
+ printf("%s(): bogus address length %x\n", __FUNCTION__, alen);
+ return(1);
+ }
+
+ if (len < 0) {
+ printf("%s(): bogus length %x\n", __FUNCTION__, len);
+ return(1);
+ }
+
+ if (wait_for_bus()) {return(1);}
+
+ if (alen != 0) {
+ /* Start address phase */
+ if (alen == 2) {
+ /* MSB goes first... */
+ write_i2c_reg(SM501_I2C_DATA, (addr >> 8) & 0xff);
+ write_i2c_reg(SM501_I2C_DATA + 1, addr & 0xff);
+ } else {
+ write_i2c_reg(SM501_I2C_DATA, addr & 0xff);
+ }
+
+ /* Now write it out without STOP condition */
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ tmp |= SM501_I2C_ENABLE | SM501_I2C_START | SM501_I2C_RPT_START_ENA;
+ write_i2c_reg(SM501_I2C_SLAVE_ADDRESS, (chip << 1) | SM501_I2C_WRITE);
+ write_i2c_reg(SM501_I2C_BYTE_COUNT, (u_int8_t)(alen - 1));
+ write_i2c_reg(SM501_I2C_CONTROL, tmp);
+
+ tmp = poll_i2c_status(SM501_I2C_NACK | SM501_I2C_BUS_ERROR | SM501_I2C_XFER_DONE, 2);
+
+ SM501_CHECK_NACK();
+ }
+
+ /*
+ * Address phase is over, now read 'len' bytes.
+ * SM502 can read up to 16 bytes per transaction so
+ * we will be reading in 16-bytes batches if len > 16.
+ */
+ do {
+ i = (len - bytes_read) > 16 ? 16 : len - bytes_read;
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ tmp |= SM501_I2C_ENABLE | SM501_I2C_START;
+ write_i2c_reg(SM501_I2C_SLAVE_ADDRESS, (chip << 1) | SM501_I2C_READ);
+ write_i2c_reg(SM501_I2C_BYTE_COUNT, (u_int8_t)(i - 1));
+ write_i2c_reg(SM501_I2C_CONTROL, tmp);
+
+ tmp = poll_i2c_status(SM501_I2C_NACK | SM501_I2C_BUS_ERROR | SM501_I2C_XFER_DONE, 100);
+
+ SM501_CHECK_NACK();
+
+ bytes_read += i;
+
+ for (; i > 0; i--) {
+ *ptr++ = read_i2c_reg(SM501_I2C_DATA + 16 - i);
+ }
+
+ } while (len > bytes_read);
+
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ write_i2c_reg(SM501_I2C_CONTROL, tmp & ~(SM501_I2C_START | SM501_I2C_ENABLE));
+
+ return(0);
+}
+
+
+static int sm501_i2c_write(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len)
+{
+ u_int8_t tmp;
+ u_int8_t *ptr = buf;
+ int i, bytes_written = 0;
+
+ if ((alen < 0) || (alen > 2)) {
+ printf("%s(): bogus address length %x\n", __FUNCTION__, alen);
+ return(1);
+ }
+
+ if (len < 0) {
+ printf("%s(): bogus length %x\n", __FUNCTION__, len);
+ return(1);
+ }
+
+ if (wait_for_bus()) {return(1);}
+
+ /*
+ * SM502 can write up to 16 bytes per transaction so we will be
+ * writing in 16-bytes batches if len > (16 - alen). Address is
+ * sent first, then data hence (16 - alen)...
+ */
+ do {
+ i = (len - bytes_written) > (16 - alen) ? 16 - alen : len - bytes_written;
+
+ /* Prepend address */
+ if (alen == 2) {
+ /* MSB goes first... */
+ write_i2c_reg(SM501_I2C_DATA, ((addr + bytes_written) >> 8) & 0xff);
+ write_i2c_reg(SM501_I2C_DATA + 1, (addr + bytes_written) & 0xff);
+ }
+
+ if (alen == 1) {
+ write_i2c_reg(SM501_I2C_DATA, (addr + bytes_written) & 0xff);
+ }
+
+
+ for (; i > 0; i--) {
+ write_i2c_reg(SM501_I2C_DATA + 16 + alen - i, *ptr++);
+ }
+
+ /* Push it down the bus */
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ tmp |= SM501_I2C_ENABLE | SM501_I2C_START;
+ write_i2c_reg(SM501_I2C_SLAVE_ADDRESS, (chip << 1) | SM501_I2C_WRITE);
+ write_i2c_reg(SM501_I2C_BYTE_COUNT, (u_int8_t)(i + alen - 1));
+ write_i2c_reg(SM501_I2C_CONTROL, tmp);
+
+ tmp = poll_i2c_status(SM501_I2C_NACK | SM501_I2C_BUS_ERROR | SM501_I2C_XFER_DONE, 100);
+
+ SM501_CHECK_NACK();
+
+ bytes_written += i;
+
+ } while (len > bytes_written);
+
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+ write_i2c_reg(SM501_I2C_CONTROL, tmp & ~(SM501_I2C_START | SM501_I2C_ENABLE));
+
+ return(0);
+}
+
+
+static unsigned int sm501_i2c_set_bus_speed(unsigned int speed)
+{
+ u_int8_t tmp;
+
+ tmp = read_i2c_reg(SM501_I2C_CONTROL);
+
+ /* SM501/502 only allows 100 or 400 KHz speed (standard or fast) */
+ if (speed <= 100000)
+ tmp &= ~SM501_I2C_SPEED;
+ else
+ tmp |= SM501_I2C_SPEED;
+
+ write_i2c_reg(SM501_I2C_CONTROL, tmp);
+
+ if (gd->flags & GD_FLG_RELOC) {
+ sm501_i2c_adap.speed = speed <= 100000 ? 100000 : 400000;
+ }
+
+ return(speed <= 100000 ? 100000 : 400000);
+}
+
+
+static unsigned int sm501_i2c_get_bus_speed(void)
+{
+ return(sm501_i2c_adap.speed);
+}
+
+
+i2c_adap_t sm501_i2c_adap = {
+ .init = sm501_i2c_init,
+ .probe = sm501_i2c_probe,
+ .read = sm501_i2c_read,
+ .write = sm501_i2c_write,
+ .set_bus_speed = sm501_i2c_set_bus_speed,
+ .get_bus_speed = sm501_i2c_get_bus_speed,
+ .speed = CONFIG_SYS_SM501_I2C_SPEED,
+ .slaveaddr = CONFIG_SYS_SM501_I2C_SLAVE,
+ .init_done = 0,
+ .name = "sm501_i2c"
+};
+#endif /* CONFIG_SM502_I2C */
diff -purN u-boot.orig/include/sm501-regs.h u-boot/include/sm501-regs.h
--- u-boot.orig/include/sm501-regs.h 1969-12-31 16:00:00.000000000 -0800
+++ u-boot/include/sm501-regs.h 2009-01-23 16:01:48.000000000 -0800
@@ -0,0 +1,394 @@
+/* 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
+*/
+
+#ifndef CONFIG_SYS_SM501_BASEADDR
+/* SM501/502 on PCI bus, resides and initialized in $(BOARD).c */
+extern unsigned long sm501_iomem_base;
+#else
+/* SM501/502 on processor bus, preassigned address */
+#define sm501_iomem_base CONFIG_SYS_SM501_BASEADDR
+#endif
+
+/* System Configuration area */
+/* System config base */
+#define SM501_SYS_CONFIG (0x000000)
+
+/* config 1 */
+#define SM501_SYSTEM_CONTROL (0x000000)
+
+#define SM501_SYSCTRL_PANEL_TRISTATE (1<<0)
+#define SM501_SYSCTRL_MEM_TRISTATE (1<<1)
+#define SM501_SYSCTRL_CRT_TRISTATE (1<<2)
+
+#define SM501_SYSCTRL_PCI_SLAVE_BURST_MASK (3<<4)
+#define SM501_SYSCTRL_PCI_SLAVE_BURST_1 (0<<4)
+#define SM501_SYSCTRL_PCI_SLAVE_BURST_2 (1<<4)
+#define SM501_SYSCTRL_PCI_SLAVE_BURST_4 (2<<4)
+#define SM501_SYSCTRL_PCI_SLAVE_BURST_8 (3<<4)
+
+#define SM501_SYSCTRL_PCI_CLOCK_RUN_EN (1<<6)
+#define SM501_SYSCTRL_PCI_RETRY_DISABLE (1<<7)
+#define SM501_SYSCTRL_PCI_SUBSYS_LOCK (1<<11)
+#define SM501_SYSCTRL_PCI_BURST_READ_EN (1<<15)
+
+/* miscellaneous control */
+
+#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_POWERMODE_P2X_SRC (1<<29)
+#define SM501_POWERMODE_V2X_SRC (1<<20)
+#define SM501_POWERMODE_M_SRC (1<<12)
+#define SM501_POWERMODE_M1_SRC (1<<4)
+
+#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_DEVICEID_SM501 (0x05010000)
+#define SM501_DEVICEID_IDMASK (0xffff0000)
+#define SM501_DEVICEID_REVMASK (0x000000ff)
+
+#define SM501_PLLCLOCK_COUNT (0x000064)
+#define SM501_MISC_TIMING (0x000068)
+#define SM501_CURRENT_SDRAM_CLOCK (0x00006C)
+
+#define SM501_PROGRAMMABLE_PLL_CONTROL (0x000074)
+
+/* 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 controller/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)
---
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