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author | Markus Klotzbuecher <mk@denx.de> | 2008-10-21 09:18:01 +0200 |
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committer | Markus Klotzbuecher <mk@denx.de> | 2008-10-21 09:18:01 +0200 |
commit | 50bd0057ba8fceeb48533f8b1a652ccd0e170838 (patch) | |
tree | ea1a183343573c2a48248923b96d316c0956727c /drivers/i2c | |
parent | 9dbc366744960013965fce8851035b6141f3b3ae (diff) | |
parent | f82642e33899766892499b163e60560fbbf87773 (diff) | |
download | u-boot-imx-50bd0057ba8fceeb48533f8b1a652ccd0e170838.zip u-boot-imx-50bd0057ba8fceeb48533f8b1a652ccd0e170838.tar.gz u-boot-imx-50bd0057ba8fceeb48533f8b1a652ccd0e170838.tar.bz2 |
Merge git://git.denx.de/u-boot into x1
Conflicts:
drivers/usb/usb_ohci.c
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/fsl_i2c.c | 22 | ||||
-rw-r--r-- | drivers/i2c/mxc_i2c.c | 8 | ||||
-rw-r--r-- | drivers/i2c/omap1510_i2c.c | 4 | ||||
-rw-r--r-- | drivers/i2c/omap24xx_i2c.c | 4 | ||||
-rw-r--r-- | drivers/i2c/soft_i2c.c | 111 | ||||
-rw-r--r-- | drivers/i2c/tsi108_i2c.c | 20 |
6 files changed, 101 insertions, 68 deletions
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c index 264553d..281a88b 100644 --- a/drivers/i2c/fsl_i2c.c +++ b/drivers/i2c/fsl_i2c.c @@ -26,7 +26,7 @@ #include <asm/io.h> #include <asm/fsl_i2c.h> /* HW definitions */ -#define I2C_TIMEOUT (CFG_HZ / 4) +#define I2C_TIMEOUT (CONFIG_SYS_HZ / 4) #define I2C_READ_BIT 1 #define I2C_WRITE_BIT 0 @@ -38,18 +38,18 @@ DECLARE_GLOBAL_DATA_PTR; * runs from ROM, and we can't switch buses because we can't modify * the global variables. */ -#ifdef CFG_SPD_BUS_NUM -static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = CFG_SPD_BUS_NUM; +#ifdef CONFIG_SYS_SPD_BUS_NUM +static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = CONFIG_SYS_SPD_BUS_NUM; #else static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = 0; #endif -static unsigned int i2c_bus_speed[2] = {CFG_I2C_SPEED, CFG_I2C_SPEED}; +static unsigned int i2c_bus_speed[2] = {CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SPEED}; static const struct fsl_i2c *i2c_dev[2] = { - (struct fsl_i2c *) (CFG_IMMR + CFG_I2C_OFFSET), -#ifdef CFG_I2C2_OFFSET - (struct fsl_i2c *) (CFG_IMMR + CFG_I2C2_OFFSET) + (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET), +#ifdef CONFIG_SYS_I2C2_OFFSET + (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C2_OFFSET) #endif }; @@ -176,7 +176,7 @@ i2c_init(int speed, int slaveadd) struct fsl_i2c *dev; unsigned int temp; - dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C_OFFSET); + dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET); writeb(0, &dev->cr); /* stop I2C controller */ udelay(5); /* let it shutdown in peace */ @@ -187,8 +187,8 @@ i2c_init(int speed, int slaveadd) writeb(0x0, &dev->sr); /* clear status register */ writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */ -#ifdef CFG_I2C2_OFFSET - dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C2_OFFSET); +#ifdef CONFIG_SYS_I2C2_OFFSET + dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C2_OFFSET); writeb(0, &dev->cr); /* stop I2C controller */ udelay(5); /* let it shutdown in peace */ @@ -386,7 +386,7 @@ i2c_reg_write(uchar i2c_addr, uchar reg, uchar val) int i2c_set_bus_num(unsigned int bus) { -#ifdef CFG_I2C2_OFFSET +#ifdef CONFIG_SYS_I2C2_OFFSET if (bus > 1) { #else if (bus > 0) { diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 1f6ba1f..eedad06 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -47,14 +47,14 @@ #define I2SR_IIF (1 << 1) #define I2SR_RX_NO_AK (1 << 0) -#ifdef CFG_I2C_MX31_PORT1 +#ifdef CONFIG_SYS_I2C_MX31_PORT1 #define I2C_BASE 0x43f80000 -#elif defined (CFG_I2C_MX31_PORT2) +#elif defined (CONFIG_SYS_I2C_MX31_PORT2) #define I2C_BASE 0x43f98000 -#elif defined (CFG_I2C_MX31_PORT3) +#elif defined (CONFIG_SYS_I2C_MX31_PORT3) #define I2C_BASE 0x43f84000 #else -#error "define CFG_I2C_MX31_PORTx to use the mx31 I2C driver" +#error "define CONFIG_SYS_I2C_MX31_PORTx to use the mx31 I2C driver" #endif #ifdef DEBUG diff --git a/drivers/i2c/omap1510_i2c.c b/drivers/i2c/omap1510_i2c.c index 388951d..a4e6227 100644 --- a/drivers/i2c/omap1510_i2c.c +++ b/drivers/i2c/omap1510_i2c.c @@ -205,7 +205,7 @@ int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len) for (i = 0; i < len; i++) { if (i2c_read_byte (chip, addr + i, &buffer[i])) { printf ("I2C read: I/O error\n"); - i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return 1; } } @@ -230,7 +230,7 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len) for (i = 0; i < len; i++) { if (i2c_write_byte (chip, addr + i, buffer[i])) { printf ("I2C read: I/O error\n"); - i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return 1; } } diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c index d16cfb1..134dccb 100644 --- a/drivers/i2c/omap24xx_i2c.c +++ b/drivers/i2c/omap24xx_i2c.c @@ -252,7 +252,7 @@ int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len) for (i = 0; i < len; i++) { if (i2c_read_byte (chip, addr + i, &buffer[i])) { printf ("I2C read: I/O error\n"); - i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return 1; } } @@ -277,7 +277,7 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len) for (i = 0; i < len; i++) { if (i2c_write_byte (chip, addr + i, buffer[i])) { printf ("I2C read: I/O error\n"); - i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return 1; } } diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c index 23db2ee..ebe60e2 100644 --- a/drivers/i2c/soft_i2c.c +++ b/drivers/i2c/soft_i2c.c @@ -28,6 +28,7 @@ #include <common.h> #ifdef CONFIG_MPC8260 /* only valid for MPC8260 */ #include <ioports.h> +#include <asm/io.h> #endif #ifdef CONFIG_AT91RM9200 /* need this for the at91rm9200 */ #include <asm/io.h> @@ -39,6 +40,9 @@ #ifdef CONFIG_LPC2292 #include <asm/arch/hardware.h> #endif +#ifdef CONFIG_MPC866 /* only valid for MPC866 */ +#include <asm/io.h> +#endif #include <i2c.h> /* #define DEBUG_I2C */ @@ -68,17 +72,23 @@ DECLARE_GLOBAL_DATA_PTR; #define PRINTD(fmt,args...) #endif +#if defined(CONFIG_I2C_MULTI_BUS) +static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = 0; +#endif /* CONFIG_I2C_MULTI_BUS */ + /*----------------------------------------------------------------------- * Local functions */ +#if !defined(CONFIG_SYS_I2C_INIT_BOARD) static void send_reset (void); +#endif static void send_start (void); static void send_stop (void); static void send_ack (int); static int write_byte (uchar byte); static uchar read_byte (int); - +#if !defined(CONFIG_SYS_I2C_INIT_BOARD) /*----------------------------------------------------------------------- * Send a reset sequence consisting of 9 clocks with the data signal high * to clock any confused device back into an idle state. Also send a @@ -86,12 +96,7 @@ static uchar read_byte (int); */ static void send_reset(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int j; I2C_SCL(1); @@ -111,18 +116,14 @@ static void send_reset(void) send_stop(); I2C_TRISTATE; } +#endif /*----------------------------------------------------------------------- * START: High -> Low on SDA while SCL is High */ static void send_start(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_DELAY; I2C_SDA(1); @@ -139,12 +140,7 @@ static void send_start(void) */ static void send_stop(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_SCL(0); I2C_DELAY; @@ -164,12 +160,7 @@ static void send_stop(void) */ static void send_ack(int ack) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_SCL(0); I2C_DELAY; @@ -189,12 +180,7 @@ static void send_ack(int ack) */ static int write_byte(uchar data) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int j; int nack; @@ -230,6 +216,51 @@ static int write_byte(uchar data) return(nack); /* not a nack is an ack */ } +#if defined(CONFIG_I2C_MULTI_BUS) +/* + * Functions for multiple I2C bus handling + */ +unsigned int i2c_get_bus_num(void) +{ + return i2c_bus_num; +} + +int i2c_set_bus_num(unsigned int bus) +{ +#if defined(CONFIG_I2C_MUX) + if (bus < CONFIG_SYS_MAX_I2C_BUS) { + i2c_bus_num = bus; + } else { + int ret; + + ret = i2x_mux_select_mux(bus); + if (ret == 0) + i2c_bus_num = bus; + else + return ret; + } +#else + if (bus >= CONFIG_SYS_MAX_I2C_BUS) + return -1; + i2c_bus_num = bus; +#endif + return 0; +} + +/* TODO: add 100/400k switching */ +unsigned int i2c_get_bus_speed(void) +{ + return CONFIG_SYS_I2C_SPEED; +} + +int i2c_set_bus_speed(unsigned int speed) +{ + if (speed != CONFIG_SYS_I2C_SPEED) + return -1; + + return 0; +} +#endif /*----------------------------------------------------------------------- * if ack == I2C_ACK, ACK the byte so can continue reading, else @@ -237,12 +268,7 @@ static int write_byte(uchar data) */ static uchar read_byte(int ack) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int data; int j; @@ -275,6 +301,12 @@ static uchar read_byte(int ack) */ void i2c_init (int speed, int slaveaddr) { +#if defined(CONFIG_SYS_I2C_INIT_BOARD) + /* call board specific i2c bus reset routine before accessing the */ + /* environment, which might be in a chip on that bus. For details */ + /* about this problem see doc/I2C_Edge_Conditions. */ + i2c_init_board(); +#else /* * WARNING: Do NOT save speed in a static variable: if the * I2C routines are called before RAM is initialized (to read @@ -282,6 +314,7 @@ void i2c_init (int speed, int slaveaddr) * system will crash. */ send_reset (); +#endif } /*----------------------------------------------------------------------- @@ -313,7 +346,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) PRINTD("i2c_read: chip %02X addr %02X alen %d buffer %p len %d\n", chip, addr, alen, buffer, len); -#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW +#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW /* * EEPROM chips that implement "address overflow" are ones * like Catalyst 24WC04/08/16 which has 9/10/11 bits of @@ -325,7 +358,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) * still be one byte because the extra address bits are * hidden in the chip address. */ - chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW); + chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); PRINTD("i2c_read: fix addr_overflow: chip %02X addr %02X\n", chip, addr); diff --git a/drivers/i2c/tsi108_i2c.c b/drivers/i2c/tsi108_i2c.c index 695e393..fda822c 100644 --- a/drivers/i2c/tsi108_i2c.c +++ b/drivers/i2c/tsi108_i2c.c @@ -60,14 +60,14 @@ static int i2c_read_byte ( chan_offset = TSI108_I2C_SDRAM_OFFSET; /* Check if I2C operation is in progress */ - temp = *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); + temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) { /* Set device address and operation (read = 0) */ temp = (byte_addr << 16) | ((chip_addr & 0x07) << 8) | ((chip_addr >> 3) & 0x0F); - *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL1) = + *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL1) = temp; /* Issue the read command @@ -75,13 +75,13 @@ static int i2c_read_byte ( * (size = 1 byte, lane = 0) */ - *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2) = + *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2) = (I2C_CNTRL2_START); /* Wait until operation completed */ do { /* Read I2C operation status */ - temp = *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); + temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_START))) { if (0 == (temp & @@ -90,7 +90,7 @@ static int i2c_read_byte ( ) { op_status = TSI108_I2C_SUCCESS; - temp = *(u32 *) (CFG_TSI108_CSR_BASE + + temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_RD_DATA); @@ -172,25 +172,25 @@ static int i2c_write_byte (uchar chip_addr,/* I2C device address on the bus */ u32 op_status = TSI108_I2C_TIMEOUT_ERR; /* Check if I2C operation is in progress */ - temp = *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); + temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) { /* Place data into the I2C Tx Register */ - *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + + *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_TX_DATA) = (u32) * buffer; /* Set device address and operation */ temp = I2C_CNTRL1_I2CWRITE | (byte_addr << 16) | ((chip_addr & 0x07) << 8) | ((chip_addr >> 3) & 0x0F); - *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + + *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL1) = temp; /* Issue the write command (at this moment all other parameters * are 0 (size = 1 byte, lane = 0) */ - *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + + *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2) = (I2C_CNTRL2_START); op_status = TSI108_I2C_TIMEOUT_ERR; @@ -198,7 +198,7 @@ static int i2c_write_byte (uchar chip_addr,/* I2C device address on the bus */ /* Wait until operation completed */ do { /* Read I2C operation status */ - temp = *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); + temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); if (0 == (temp & (I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) { if (0 == (temp & |