diff options
Diffstat (limited to 'arch/powerpc/boot')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/boot/mv64x60_i2c.c | 204 |
2 files changed, 1 insertions, 205 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 523ad27e2d40..50acbf67b264 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -126,7 +126,7 @@ src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c src-wlib-$(CONFIG_PPC_8xx) += mpc8xx.c planetcore.c fsl-soc.c src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c -src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c fsl-soc.c +src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c ugecon.c fsl-soc.c src-wlib-$(CONFIG_XILINX_VIRTEX) += uartlite.c src-wlib-$(CONFIG_CPM) += cpm-serial.c diff --git a/arch/powerpc/boot/mv64x60_i2c.c b/arch/powerpc/boot/mv64x60_i2c.c deleted file mode 100644 index 52a3212b6638..000000000000 --- a/arch/powerpc/boot/mv64x60_i2c.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Bootloader version of the i2c driver for the MV64x60. - * - * Author: Dale Farnsworth <dfarnsworth@mvista.com> - * Maintained by: Mark A. Greer <mgreer@mvista.com> - * - * 2003, 2007 (c) MontaVista, Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program is - * licensed "as is" without any warranty of any kind, whether express or - * implied. - */ - -#include <stdarg.h> -#include <stddef.h> -#include "types.h" -#include "elf.h" -#include "page.h" -#include "string.h" -#include "stdio.h" -#include "io.h" -#include "ops.h" -#include "mv64x60.h" - -/* Register defines */ -#define MV64x60_I2C_REG_SLAVE_ADDR 0x00 -#define MV64x60_I2C_REG_DATA 0x04 -#define MV64x60_I2C_REG_CONTROL 0x08 -#define MV64x60_I2C_REG_STATUS 0x0c -#define MV64x60_I2C_REG_BAUD 0x0c -#define MV64x60_I2C_REG_EXT_SLAVE_ADDR 0x10 -#define MV64x60_I2C_REG_SOFT_RESET 0x1c - -#define MV64x60_I2C_CONTROL_ACK 0x04 -#define MV64x60_I2C_CONTROL_IFLG 0x08 -#define MV64x60_I2C_CONTROL_STOP 0x10 -#define MV64x60_I2C_CONTROL_START 0x20 -#define MV64x60_I2C_CONTROL_TWSIEN 0x40 -#define MV64x60_I2C_CONTROL_INTEN 0x80 - -#define MV64x60_I2C_STATUS_BUS_ERR 0x00 -#define MV64x60_I2C_STATUS_MAST_START 0x08 -#define MV64x60_I2C_STATUS_MAST_REPEAT_START 0x10 -#define MV64x60_I2C_STATUS_MAST_WR_ADDR_ACK 0x18 -#define MV64x60_I2C_STATUS_MAST_WR_ADDR_NO_ACK 0x20 -#define MV64x60_I2C_STATUS_MAST_WR_ACK 0x28 -#define MV64x60_I2C_STATUS_MAST_WR_NO_ACK 0x30 -#define MV64x60_I2C_STATUS_MAST_LOST_ARB 0x38 -#define MV64x60_I2C_STATUS_MAST_RD_ADDR_ACK 0x40 -#define MV64x60_I2C_STATUS_MAST_RD_ADDR_NO_ACK 0x48 -#define MV64x60_I2C_STATUS_MAST_RD_DATA_ACK 0x50 -#define MV64x60_I2C_STATUS_MAST_RD_DATA_NO_ACK 0x58 -#define MV64x60_I2C_STATUS_MAST_WR_ADDR_2_ACK 0xd0 -#define MV64x60_I2C_STATUS_MAST_WR_ADDR_2_NO_ACK 0xd8 -#define MV64x60_I2C_STATUS_MAST_RD_ADDR_2_ACK 0xe0 -#define MV64x60_I2C_STATUS_MAST_RD_ADDR_2_NO_ACK 0xe8 -#define MV64x60_I2C_STATUS_NO_STATUS 0xf8 - -static u8 *ctlr_base; - -static int mv64x60_i2c_wait_for_status(int wanted) -{ - int i; - int status; - - for (i=0; i<1000; i++) { - udelay(10); - status = in_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_STATUS)) - & 0xff; - if (status == wanted) - return status; - } - return -status; -} - -static int mv64x60_i2c_control(int control, int status) -{ - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff); - return mv64x60_i2c_wait_for_status(status); -} - -static int mv64x60_i2c_read_byte(int control, int status) -{ - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff); - if (mv64x60_i2c_wait_for_status(status) < 0) - return -1; - return in_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_DATA)) & 0xff; -} - -static int mv64x60_i2c_write_byte(int data, int control, int status) -{ - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_DATA), data & 0xff); - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff); - return mv64x60_i2c_wait_for_status(status); -} - -int mv64x60_i2c_read(u32 devaddr, u8 *buf, u32 offset, u32 offset_size, - u32 count) -{ - int i; - int data; - int control; - int status; - - if (ctlr_base == NULL) - return -1; - - /* send reset */ - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_SOFT_RESET), 0); - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_SLAVE_ADDR), 0); - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_EXT_SLAVE_ADDR), 0); - out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_BAUD), (4 << 3) | 0x4); - - if (mv64x60_i2c_control(MV64x60_I2C_CONTROL_TWSIEN, - MV64x60_I2C_STATUS_NO_STATUS) < 0) - return -1; - - /* send start */ - control = MV64x60_I2C_CONTROL_START | MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_START; - if (mv64x60_i2c_control(control, status) < 0) - return -1; - - /* select device for writing */ - data = devaddr & ~0x1; - control = MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_WR_ADDR_ACK; - if (mv64x60_i2c_write_byte(data, control, status) < 0) - return -1; - - /* send offset of data */ - control = MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_WR_ACK; - if (offset_size > 1) { - if (mv64x60_i2c_write_byte(offset >> 8, control, status) < 0) - return -1; - } - if (mv64x60_i2c_write_byte(offset, control, status) < 0) - return -1; - - /* resend start */ - control = MV64x60_I2C_CONTROL_START | MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_REPEAT_START; - if (mv64x60_i2c_control(control, status) < 0) - return -1; - - /* select device for reading */ - data = devaddr | 0x1; - control = MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_RD_ADDR_ACK; - if (mv64x60_i2c_write_byte(data, control, status) < 0) - return -1; - - /* read all but last byte of data */ - control = MV64x60_I2C_CONTROL_ACK | MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_RD_DATA_ACK; - - for (i=1; i<count; i++) { - data = mv64x60_i2c_read_byte(control, status); - if (data < 0) { - printf("errors on iteration %d\n", i); - return -1; - } - *buf++ = data; - } - - /* read last byte of data */ - control = MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_MAST_RD_DATA_NO_ACK; - data = mv64x60_i2c_read_byte(control, status); - if (data < 0) - return -1; - *buf++ = data; - - /* send stop */ - control = MV64x60_I2C_CONTROL_STOP | MV64x60_I2C_CONTROL_TWSIEN; - status = MV64x60_I2C_STATUS_NO_STATUS; - if (mv64x60_i2c_control(control, status) < 0) - return -1; - - return count; -} - -int mv64x60_i2c_open(void) -{ - u32 v; - void *devp; - - devp = find_node_by_compatible(NULL, "marvell,mv64360-i2c"); - if (devp == NULL) - goto err_out; - if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v)) - goto err_out; - - ctlr_base = (u8 *)v; - return 0; - -err_out: - return -1; -} - -void mv64x60_i2c_close(void) -{ - ctlr_base = NULL; -} |