diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0026-Aspeed-I2C-support-in-U-Boot.patch')
-rw-r--r-- | meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0026-Aspeed-I2C-support-in-U-Boot.patch | 1520 |
1 files changed, 1520 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0026-Aspeed-I2C-support-in-U-Boot.patch b/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0026-Aspeed-I2C-support-in-U-Boot.patch new file mode 100644 index 000000000..950763d8e --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0026-Aspeed-I2C-support-in-U-Boot.patch @@ -0,0 +1,1520 @@ +From a1626519109c9bda02119114224f3759add21f00 Mon Sep 17 00:00:00 2001 +From: AppaRao Puli <apparao.puli@linux.intel.com> +Date: Mon, 6 May 2019 03:01:55 +0530 +Subject: [PATCH] Aspeed I2C support in U-Boot + +Adding Aspeed I2C support in u-boot and enabled +i2c command. It is mainly used for PFR to +communicate with PFR CPLD while BMC is in +"Force Firmware Update" mode. + +Tested: +Using i2c command in u-boot, validated +i2c functionalities like probe, read and write. + +Change-Id: Iad9af4a57a58bc8dc5c470bfadad9dac1371c238 +Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com> +--- + arch/arm/include/asm/arch-aspeed/ast_g5_platform.h | 14 + + arch/arm/include/asm/arch-aspeed/ast_scu.h | 5 + + arch/arm/include/asm/arch-aspeed/regs-iic.h | 204 +++++ + arch/arm/mach-aspeed/ast-scu.c | 122 +++ + board/aspeed/ast-g5/ast-g5.c | 8 + + configs/ast_g5_phy_defconfig | 2 + + drivers/i2c/Kconfig | 5 + + drivers/i2c/Makefile | 1 + + drivers/i2c/ast_i2c.c | 849 +++++++++++++++++++++ + drivers/i2c/ast_i2c.h | 131 ++++ + include/configs/ast-common.h | 5 + + 11 files changed, 1346 insertions(+) + create mode 100644 arch/arm/include/asm/arch-aspeed/regs-iic.h + create mode 100644 drivers/i2c/ast_i2c.c + create mode 100644 drivers/i2c/ast_i2c.h + +diff --git a/arch/arm/include/asm/arch-aspeed/ast_g5_platform.h b/arch/arm/include/asm/arch-aspeed/ast_g5_platform.h +index 4210873..a84f471 100644 +--- a/arch/arm/include/asm/arch-aspeed/ast_g5_platform.h ++++ b/arch/arm/include/asm/arch-aspeed/ast_g5_platform.h +@@ -105,6 +105,20 @@ + #define AST_LPC_BASE 0x1E789000 /* LPC */ + #define AST_MBX_BASE 0x1E789200 /* Mailbox */ + #define AST_I2C_BASE 0x1E78A000 /* I2C */ ++#define AST_I2C_DEV0_BASE 0x1E78A040 /* I2C DEV1 */ ++#define AST_I2C_DEV1_BASE 0x1E78A080 /* I2C DEV2 */ ++#define AST_I2C_DEV2_BASE 0x1E78A0C0 /* I2C DEV3 */ ++#define AST_I2C_DEV3_BASE 0x1E78A100 /* I2C DEV4 */ ++#define AST_I2C_DEV4_BASE 0x1E78A140 /* I2C DEV5 */ ++#define AST_I2C_DEV5_BASE 0x1E78A180 /* I2C DEV6 */ ++#define AST_I2C_DEV6_BASE 0x1E78A1C0 /* I2C DEV7 */ ++#define AST_I2C_DEV7_BASE 0x1E78A300 /* I2C DEV8 */ ++#define AST_I2C_DEV8_BASE 0x1E78A340 /* I2C DEV9 */ ++#define AST_I2C_DEV9_BASE 0x1E78A380 /* I2C DEV10 */ ++#define AST_I2C_DEV10_BASE 0x1E78A3C0 /* I2C DEV11 */ ++#define AST_I2C_DEV11_BASE 0x1E78A400 /* I2C DEV12 */ ++#define AST_I2C_DEV12_BASE 0x1E78A440 /* I2C DEV13 */ ++#define AST_I2C_DEV13_BASE 0x1E78A480 /* I2C DEV14 */ + #define AST_PECI_BASE 0x1E78B000 /* PECI */ + #define AST_PCIARBITER_BASE 0x1E78C000 /* PCI ARBITER */ + #define AST_UART2_BASE 0x1E78D000 /* UART2 */ +diff --git a/arch/arm/include/asm/arch-aspeed/ast_scu.h b/arch/arm/include/asm/arch-aspeed/ast_scu.h +index 369c4e3..b94d13e 100644 +--- a/arch/arm/include/asm/arch-aspeed/ast_scu.h ++++ b/arch/arm/include/asm/arch-aspeed/ast_scu.h +@@ -28,6 +28,8 @@ + #ifndef __AST_SCU_H + #define __AST_SCU_H + ++#include <common.h> ++ + extern void ast_scu_show_system_info (void); + extern void ast_scu_sys_rest_info(void); + extern void ast_scu_security_info(void); +@@ -39,13 +41,16 @@ extern u32 ast_get_clk_source(void); + extern u32 ast_get_h_pll_clk(void); + extern u32 ast_get_m_pll_clk(void); + extern u32 ast_get_ahbclk(void); ++extern u32 ast_get_pclk(void); + + extern u32 ast_scu_get_vga_memsize(void); + ++extern void ast_scu_init_i2c(void); + extern void ast_scu_init_eth(u8 num); + extern void ast_scu_multi_func_eth(u8 num); + extern void ast_scu_multi_func_romcs(u8 num); + extern void ast_scu_multi_func_sgpio(void); ++extern void ast_scu_multi_func_i2c(u8 bus_no); + + void ast_config_uart5_clk(void); + +diff --git a/arch/arm/include/asm/arch-aspeed/regs-iic.h b/arch/arm/include/asm/arch-aspeed/regs-iic.h +new file mode 100644 +index 0000000..2847430 +--- /dev/null ++++ b/arch/arm/include/asm/arch-aspeed/regs-iic.h +@@ -0,0 +1,204 @@ ++/* arch/arm/plat-aspeed/include/mach/regs-iic.h ++ * ++ * Copyright (c) 2012 ASPEED Technology Inc. <ryan_chen@aspeedtech.com> ++ * http://www.aspeedtech.com/ ++ * ++ * 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. ++ * ++ * ASPEED I2C Controller ++*/ ++ ++#ifndef __ASM_ARCH_REGS_IIC_H ++#define __ASM_ARCH_REGS_IIC_H __FILE__ ++ ++#ifdef CONFIG_ARCH_AST1010 ++#define AST_I2C_DMA_SIZE 512 ++#else ++#define AST_I2C_DMA_SIZE 4096 ++#endif ++#define AST_I2C_PAGE_SIZE 256 ++ ++#if defined(CONFIG_ARCH_AST2300) ++#define NUM_BUS 9 ++#elif defined(CONFIG_ARCH_AST2400) ++#define NUM_BUS 14 ++#elif defined(CONFIG_ARCH_AST1010) ++#define NUM_BUS 15 ++#elif defined(CONFIG_ARCH_AST1520) || defined(CONFIG_ARCH_AST3200) || defined(CONFIG_ARCH_AST2500) ++#define NUM_BUS 14 ++#elif defined(CONFIG_ARCH_AST1220) ++#define NUM_BUS 10 ++#else ++#err "NO define NUM_BUS" ++#endif ++ ++/* I2C Register */ ++#define I2C_FUN_CTRL_REG 0x00 ++#define I2C_AC_TIMING_REG1 0x04 ++#define I2C_AC_TIMING_REG2 0x08 ++#define I2C_INTR_CTRL_REG 0x0c ++#define I2C_INTR_STS_REG 0x10 ++#define I2C_CMD_REG 0x14 ++#define I2C_DEV_ADDR_REG 0x18 ++#define I2C_BUF_CTRL_REG 0x1c ++#define I2C_BYTE_BUF_REG 0x20 ++#define I2C_DMA_BASE_REG 0x24 ++#define I2C_DMA_LEN_REG 0x28 ++ ++ ++/* Gloable Register Definition */ ++/* 0x00 : I2C Interrupt Status Register */ ++/* 0x08 : I2C Interrupt Target Assignment */ ++#if defined(CONFIG_ARCH_AST2400) ++#define AST_I2CG_INTR14 (0x1 << 13) ++#define AST_I2CG_INTR13 (0x1 << 12) ++#define AST_I2CG_INTR12 (0x1 << 11) ++#define AST_I2CG_INTR11 (0x1 << 10) ++#define AST_I2CG_INTR10 (0x1 << 9) ++#elif defined(CONFIG_ARCH_AST1010) ++#define AST_I2CG_INTR14 (0x1 << 13) ++#define AST_I2CG_INTR13 (0x1 << 12) ++#define AST_I2CG_INTR12 (0x1 << 11) ++#define AST_I2CG_INTR11 (0x1 << 10) ++#define AST_I2CG_INTR10 (0x1 << 9) ++#endif ++#define AST_I2CG_INTR09 (0x1 << 8) ++#define AST_I2CG_INTR08 (0x1 << 7) ++#define AST_I2CG_INTR07 (0x1 << 6) ++#define AST_I2CG_INTR06 (0x1 << 5) ++#define AST_I2CG_INTR05 (0x1 << 4) ++#define AST_I2CG_INTR04 (0x1 << 3) ++#define AST_I2CG_INTR03 (0x1 << 2) ++#define AST_I2CG_INTR02 (0x1 << 1) ++#define AST_I2CG_INTR01 (0x1 ) ++ ++/* Device Register Definition */ ++/* 0x00 : I2CD Function Control Register */ ++#define AST_I2CD_BUFF_SEL_MASK (0x7 << 20) ++#define AST_I2CD_BUFF_SEL(x) (x << 20) // page 0 ~ 7 ++#define AST_I2CD_M_SDA_LOCK_EN (0x1 << 16) ++#define AST_I2CD_MULTI_MASTER_DIS (0x1 << 15) ++#define AST_I2CD_M_SCL_DRIVE_EN (0x1 << 14) ++#define AST_I2CD_MSB_STS (0x1 << 9) ++#define AST_I2CD_SDA_DRIVE_1T_EN (0x1 << 8) ++#define AST_I2CD_M_SDA_DRIVE_1T_EN (0x1 << 7) ++#define AST_I2CD_M_HIGH_SPEED_EN (0x1 << 6) ++#define AST_I2CD_DEF_ADDR_EN (0x1 << 5) ++#define AST_I2CD_DEF_ALERT_EN (0x1 << 4) ++#define AST_I2CD_DEF_ARP_EN (0x1 << 3) ++#define AST_I2CD_DEF_GCALL_EN (0x1 << 2) ++#define AST_I2CD_SLAVE_EN (0x1 << 1) ++#define AST_I2CD_MASTER_EN (0x1 ) ++ ++/* 0x04 : I2CD Clock and AC Timing Control Register #1 */ ++#define AST_I2CD_tBUF (0x1 << 28) // 0~7 ++#define AST_I2CD_tHDSTA (0x1 << 24) // 0~7 ++#define AST_I2CD_tACST (0x1 << 20) // 0~7 ++#define AST_I2CD_tCKHIGH (0x1 << 16) // 0~7 ++#define AST_I2CD_tCKLOW (0x1 << 12) // 0~7 ++#define AST_I2CD_tHDDAT (0x1 << 10) // 0~7 ++#define AST_I2CD_CLK_TO_BASE_DIV (0x1 << 8) // 0~3 ++#define AST_I2CD_CLK_BASE_DIV (0x1 ) // 0~0xf ++ ++/* 0x08 : I2CD Clock and AC Timing Control Register #2 */ ++#define AST_I2CD_tTIMEOUT (0x1 ) // 0~7 ++#define AST_NO_TIMEOUT_CTRL 0x0 ++ ++ ++/* 0x0c : I2CD Interrupt Control Register */ ++#define AST_I2CD_SDA_DL_TO_INTR_EN (0x1 << 14) ++#define AST_I2CD_BUS_RECOVER_INTR_EN (0x1 << 13) ++#define AST_I2CD_SMBUS_ALT_INTR_EN (0x1 << 12) ++#define AST_I2CD_SLAVE_MATCH_INTR_EN (0x1 << 7) ++#define AST_I2CD_SCL_TO_INTR_EN (0x1 << 6) ++#define AST_I2CD_ABNORMAL_INTR_EN (0x1 << 5) ++#define AST_I2CD_NORMAL_STOP_INTR_EN (0x1 << 4) ++#define AST_I2CD_ARBIT_LOSS_INTR_EN (0x1 << 3) ++#define AST_I2CD_RX_DOWN_INTR_EN (0x1 << 2) ++#define AST_I2CD_TX_NAK_INTR_EN (0x1 << 1) ++#define AST_I2CD_TX_ACK_INTR_EN (0x1 ) ++ ++/* 0x10 : I2CD Interrupt Status Register : WC */ ++#define AST_I2CD_INTR_STS_SDA_DL_TO (0x1 << 14) ++#define AST_I2CD_INTR_STS_BUS_RECOVER (0x1 << 13) ++#define AST_I2CD_INTR_STS_SMBUS_ALT (0x1 << 12) ++#define AST_I2CD_INTR_STS_SMBUS_ARP_ADDR (0x1 << 11) ++#define AST_I2CD_INTR_STS_SMBUS_DEV_ALT (0x1 << 10) ++#define AST_I2CD_INTR_STS_SMBUS_DEF_ADDR (0x1 << 9) ++#define AST_I2CD_INTR_STS_GCALL_ADDR (0x1 << 8) ++#define AST_I2CD_INTR_STS_SLAVE_MATCH (0x1 << 7) ++#define AST_I2CD_INTR_STS_SCL_TO (0x1 << 6) ++#define AST_I2CD_INTR_STS_ABNORMAL (0x1 << 5) ++#define AST_I2CD_INTR_STS_NORMAL_STOP (0x1 << 4) ++#define AST_I2CD_INTR_STS_ARBIT_LOSS (0x1 << 3) ++#define AST_I2CD_INTR_STS_RX_DOWN (0x1 << 2) ++#define AST_I2CD_INTR_STS_TX_NAK (0x1 << 1) ++#define AST_I2CD_INTR_STS_TX_ACK (0x1 ) ++ ++/* 0x14 : I2CD Command/Status Register */ ++#define AST_I2CD_SDA_OE (0x1 << 28) ++#define AST_I2CD_SDA_O (0x1 << 27) ++#define AST_I2CD_SCL_OE (0x1 << 26) ++#define AST_I2CD_SCL_O (0x1 << 25) ++#define AST_I2CD_TX_TIMING (0x1 << 24) // 0 ~3 ++#define AST_I2CD_TX_STATUS (0x1 << 23) ++// Tx State Machine ++#define AST_I2CD_IDLE 0x0 ++#define AST_I2CD_MACTIVE 0x8 ++#define AST_I2CD_MSTART 0x9 ++#define AST_I2CD_MSTARTR 0xa ++#define AST_I2CD_MSTOP 0xb ++#define AST_I2CD_MTXD 0xc ++#define AST_I2CD_MRXACK 0xd ++#define AST_I2CD_MRXD 0xe ++#define AST_I2CD_MTXACK 0xf ++#define AST_I2CD_SWAIT 0x1 ++#define AST_I2CD_SRXD 0x4 ++#define AST_I2CD_STXACK 0x5 ++#define AST_I2CD_STXD 0x6 ++#define AST_I2CD_SRXACK 0x7 ++#define AST_I2CD_RECOVER 0x3 ++ ++#define AST_I2CD_SCL_LINE_STS (0x1 << 18) ++#define AST_I2CD_SDA_LINE_STS (0x1 << 17) ++#define AST_I2CD_BUS_BUSY_STS (0x1 << 16) ++#define AST_I2CD_SDA_OE_OUT_DIR (0x1 << 15) ++#define AST_I2CD_SDA_O_OUT_DIR (0x1 << 14) ++#define AST_I2CD_SCL_OE_OUT_DIR (0x1 << 13) ++#define AST_I2CD_SCL_O_OUT_DIR (0x1 << 12) ++#define AST_I2CD_BUS_RECOVER_CMD_EN (0x1 << 11) ++#define AST_I2CD_S_ALT_EN (0x1 << 10) ++// 0 : DMA Buffer, 1: Pool Buffer ++//AST1070 DMA register ++#define AST_I2CD_RX_DMA_ENABLE (0x1 << 9) ++#define AST_I2CD_TX_DMA_ENABLE (0x1 << 8) ++ ++/* Command Bit */ ++#define AST_I2CD_RX_BUFF_ENABLE (0x1 << 7) ++#define AST_I2CD_TX_BUFF_ENABLE (0x1 << 6) ++#define AST_I2CD_M_STOP_CMD (0x1 << 5) ++#define AST_I2CD_M_S_RX_CMD_LAST (0x1 << 4) ++#define AST_I2CD_M_RX_CMD (0x1 << 3) ++#define AST_I2CD_S_TX_CMD (0x1 << 2) ++#define AST_I2CD_M_TX_CMD (0x1 << 1) ++#define AST_I2CD_M_START_CMD (0x1 ) ++ ++/* 0x18 : I2CD Slave Device Address Register */ ++ ++/* 0x1C : I2CD Pool Buffer Control Register */ ++#define AST_I2CD_RX_BUF_ADDR_GET(x) ((x>> 24)& 0xff) ++#define AST_I2CD_RX_BUF_END_ADDR_SET(x) (x << 16) ++#define AST_I2CD_TX_DATA_BUF_END_SET(x) ((x&0xff) << 8) ++#define AST_I2CD_TX_DATA_BUF_GET(x) ((x >>8) & 0xff) ++#define AST_I2CD_BUF_BASE_ADDR_SET(x) (x & 0x3f) ++ ++/* 0x20 : I2CD Transmit/Receive Byte Buffer Register */ ++#define AST_I2CD_GET_MODE(x) ((x >> 8) & 0x1) ++ ++#define AST_I2CD_RX_BYTE_BUFFER (0xff << 8) ++#define AST_I2CD_TX_BYTE_BUFFER (0xff ) ++ ++ ++#endif /* __ASM_ARCH_REGS_IIC_H */ +diff --git a/arch/arm/mach-aspeed/ast-scu.c b/arch/arm/mach-aspeed/ast-scu.c +index 976c59b..7e8d4c8 100644 +--- a/arch/arm/mach-aspeed/ast-scu.c ++++ b/arch/arm/mach-aspeed/ast-scu.c +@@ -112,6 +112,12 @@ static struct soc_id soc_map_table[] = { + SOC_ID("AST2530-A2", 0x04030403), + }; + ++void ast_scu_init_i2c(void) ++{ ++ ast_scu_write(ast_scu_read(AST_SCU_RESET) & ~SCU_RESET_I2C, ++ AST_SCU_RESET); ++} ++ + void ast_scu_init_eth(u8 num) + { + /* Set MAC delay Timing */ +@@ -292,6 +298,23 @@ u32 ast_get_ahbclk(void) + return ((hpll / axi_div) / ahb_div); + } + ++u32 ast_get_pclk(void) ++{ ++ unsigned int div, hpll; ++ ++ hpll = ast_get_h_pll_clk(); ++ div = SCU_GET_PCLK_DIV(ast_scu_read(AST_SCU_CLK_SEL)); ++#ifdef AST_SOC_G5 ++ div = (div+1) << 2; ++#else ++ div = (div+1) << 1; ++#endif ++ ++ debug("HPLL=%d, Div=%d, PCLK=%d\n", hpll, div, hpll/div); ++ return (hpll/div); ++} ++ ++ + #else /* ! AST_SOC_G5 */ + + u32 ast_get_h_pll_clk(void) +@@ -457,6 +480,105 @@ void ast_scu_multi_func_sgpio(void) + AST_SCU_FUN_PIN_CTRL2); + } + ++extern void ast_scu_multi_func_i2c(u8 bus_no) ++{ ++#ifdef CONFIG_ARCH_AST1010 ++ ast_scu_write(ast_scu_read(AST_SCU_FUN_PIN_CTRL4) | ++ SCU_FUN_PIN_SCL13 | ++ SCU_FUN_PIN_SDA13 | ++ SCU_FUN_PIN_SCL14 | ++ SCU_FUN_PIN_SDA14, ++ AST_SCU_FUN_PIN_CTRL4); ++ ++ ast_scu_write(ast_scu_read(AST_SCU_FUN_PIN_CTRL2) | ++ SCU_FUN_PIN_SCL1 | ++ SCU_FUN_PIN_SDA1 | ++ SCU_FUN_PIN_SCL2 | ++ SCU_FUN_PIN_SDA2 | ++ SCU_FUN_PIN_SCL3 | ++ SCU_FUN_PIN_SDA3 | ++ SCU_FUN_PIN_SCL4 | ++ SCU_FUN_PIN_SDA4 | ++ SCU_FUN_PIN_SCL5 | ++ SCU_FUN_PIN_SDA5 | ++ SCU_FUN_PIN_SCL6 | ++ SCU_FUN_PIN_SDA6 | ++ SCU_FUN_PIN_SCL7 | ++ SCU_FUN_PIN_SDA7 | ++ SCU_FUN_PIN_SCL8 | ++ SCU_FUN_PIN_SDA8 | ++ SCU_FUN_PIN_SALT1 | ++ SCU_FUN_PIN_SALT2 | ++ SCU_FUN_PIN_SALT3 | ++ SCU_FUN_PIN_SALT4, ++ AST_SCU_FUN_PIN_CTRL2); ++ ++ ast_scu_write(ast_scu_read(AST_SCU_FUN_PIN_CTRL1) | ++ SCU_FUN_PIN_SCL9 | ++ SCU_FUN_PIN_SDA9 | ++ SCU_FUN_PIN_SCL10 | ++ SCU_FUN_PIN_SDA10 | ++ SCU_FUN_PIN_SCL11 | ++ SCU_FUN_PIN_SDA11 | ++ SCU_FUN_PIN_SCL12 | ++ SCU_FUN_PIN_SDA12, ++ AST_SCU_FUN_PIN_CTRL1); ++#else ++ //TODO check ... //In AST2400 Due to share pin with SD , please not enable I2C 10 ~14 ++ // AST 2400 have 14 , AST 2300 9 ... ++ u32 pin_ctrl = ast_scu_read(AST_SCU_FUN_PIN_CTRL5); ++ switch (bus_no) { ++ case 0: ++ break; ++ case 1: ++ break; ++ case 2: ++ pin_ctrl |= SCU_FUC_PIN_I2C3; ++ break; ++ case 3: ++ pin_ctrl |= SCU_FUC_PIN_I2C4; ++ break; ++ case 4: ++ pin_ctrl |= SCU_FUC_PIN_I2C5; ++ break; ++ case 5: ++ pin_ctrl |= SCU_FUC_PIN_I2C6; ++ break; ++ case 6: ++ pin_ctrl |= SCU_FUC_PIN_I2C7; ++ break; ++ case 7: ++ pin_ctrl |= SCU_FUC_PIN_I2C8; ++ break; ++ case 8: ++ pin_ctrl |= SCU_FUC_PIN_I2C9; ++ break; ++ case 9: ++ pin_ctrl |= SCU_FUC_PIN_I2C10; ++ pin_ctrl &= ~SCU_FUC_PIN_SD1; ++ break; ++ case 10: ++ pin_ctrl |= SCU_FUC_PIN_I2C11; ++ pin_ctrl &= ~SCU_FUC_PIN_SD1; ++ break; ++ case 11: ++ pin_ctrl |= SCU_FUC_PIN_I2C12; ++ pin_ctrl &= ~SCU_FUC_PIN_SD1; ++ break; ++ case 12: ++ pin_ctrl |= SCU_FUC_PIN_I2C13; ++ pin_ctrl &= ~SCU_FUC_PIN_SD1; ++ break; ++ case 13: ++ pin_ctrl |= SCU_FUC_PIN_I2C14; ++ break; ++ } ++ ++ ast_scu_write(pin_ctrl, AST_SCU_FUN_PIN_CTRL5); ++#endif ++} ++ ++ + u32 ast_scu_revision_id(void) + { + int i; +diff --git a/board/aspeed/ast-g5/ast-g5.c b/board/aspeed/ast-g5/ast-g5.c +index 0953677..7309589 100644 +--- a/board/aspeed/ast-g5/ast-g5.c ++++ b/board/aspeed/ast-g5/ast-g5.c +@@ -13,6 +13,7 @@ + #include <asm/arch/ast_scu.h> + #include <asm/arch/ast-sdmc.h> + #include <asm/io.h> ++#include <i2c.h> + + #include "ast-g5.h" + +@@ -37,6 +38,13 @@ int board_init(void) + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + gd->flags = 0; + ++ /* Initialize I2C */ ++#if defined(CONFIG_SYS_I2C) ++ i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr); ++#else ++ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); ++#endif ++ + ast_g5_intel(); + return 0; + } +diff --git a/configs/ast_g5_phy_defconfig b/configs/ast_g5_phy_defconfig +index 8f09190..47d9563 100644 +--- a/configs/ast_g5_phy_defconfig ++++ b/configs/ast_g5_phy_defconfig +@@ -15,3 +15,5 @@ CONFIG_SPI_FLASH_MACRONIX=y + CONFIG_SPI_FLASH_STMICRO=y + CONFIG_SYS_NS16550=y + CONFIG_USE_IRQ=y ++CONFIG_CMD_I2C=y ++CONFIG_SYS_I2C_AST=y +diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig +index 6e22bba..5368ba2 100644 +--- a/drivers/i2c/Kconfig ++++ b/drivers/i2c/Kconfig +@@ -58,6 +58,11 @@ config DM_I2C_GPIO + bindings are supported. + Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt + ++config SYS_I2C_AST ++ bool "Aspeed I2C bus driver" ++ help ++ Add support for Aspeed I2C busses on AST2500 processors. ++ + config SYS_I2C_FSL + bool "Freescale I2C bus driver" + depends on DM_I2C +diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile +index 167424d..b2a69ea 100644 +--- a/drivers/i2c/Makefile ++++ b/drivers/i2c/Makefile +@@ -11,6 +11,7 @@ obj-$(CONFIG_$(SPL_)I2C_CROS_EC_TUNNEL) += cros_ec_tunnel.o + obj-$(CONFIG_$(SPL_)I2C_CROS_EC_LDO) += cros_ec_ldo.o + + obj-$(CONFIG_SYS_I2C_ADI) += adi_i2c.o ++obj-$(CONFIG_SYS_I2C_AST) += ast_i2c.o + obj-$(CONFIG_I2C_MV) += mv_i2c.o + obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o + obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o +diff --git a/drivers/i2c/ast_i2c.c b/drivers/i2c/ast_i2c.c +new file mode 100644 +index 0000000..0b12fc2 +--- /dev/null ++++ b/drivers/i2c/ast_i2c.c +@@ -0,0 +1,849 @@ ++/* ++ * i2c_adap_ast.c ++ * ++ * I2C adapter for the ASPEED I2C bus access. ++ * ++ * Copyright (C) 2012-2020 ASPEED Technology 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. ++ * ++ * History: ++ * 2012.07.26: Initial version [Ryan Chen] ++ */ ++ ++#include <common.h> ++#include <configs/ast-common.h> ++#include <fdtdec.h> ++ ++#include <asm/arch/ast_scu.h> ++#include <i2c.h> ++ ++#include <asm/arch/regs-iic.h> ++#include <asm/io.h> ++ ++// AST2400 buffer mode issue , force I2C slave write use byte mode , read use ++// buffer mode ++/* Use platform_data instead of module parameters */ ++/* Fast Mode = 400 kHz, Standard = 100 kHz */ ++// static int clock = 100; /* Default: 100 kHz */ ++ ++/***************************************************************************/ ++DECLARE_GLOBAL_DATA_PTR; ++ ++#define I2C_TIMEOUT_COUNT 200 ++#define I2C_SLEEP_US 1000 ++ ++static unsigned int i2c_bus_num __attribute__((section(".data"))); ++ ++/* Information about i2c controller */ ++struct ast_i2c_bus { ++ u32 reg_base; /* virtual */ ++ u32 speed; ++ u32 state; /* I2C xfer mode state matchine */ ++ u16 addr; /* slave address */ ++ u16 flags; ++ u16 a_len; /* msg length */ ++ u8 *a_buf; /* pointer to msg data */ ++ u16 d_len; /* msg length */ ++ u8 *d_buf; /* pointer to msg data */ ++}; ++ ++static struct ast_i2c_bus ast_i2c[NUM_BUS] __attribute__((section(".data"))); ++ ++struct ast_i2c_timing_table { ++ u32 divisor; ++ u32 timing; ++}; ++ ++static struct ast_i2c_timing_table i2c_timing_table[] = { ++#if defined(AST_SOC_G5) ++ /* Divisor : Base Clock : tCK High : tCK Low */ ++ /* Divisor : [3:0] : [19:16]: [15:12] */ ++ { 6, 0x77700300 | (0x0) | (0x2 << 16) | (0x2 << 12) }, ++ { 7, 0x77700300 | (0x0) | (0x3 << 16) | (0x2 << 12) }, ++ { 8, 0x77700300 | (0x0) | (0x3 << 16) | (0x3 << 12) }, ++ { 9, 0x77700300 | (0x0) | (0x4 << 16) | (0x3 << 12) }, ++ { 10, 0x77700300 | (0x0) | (0x4 << 16) | (0x4 << 12) }, ++ { 11, 0x77700300 | (0x0) | (0x5 << 16) | (0x4 << 12) }, ++ { 12, 0x77700300 | (0x0) | (0x5 << 16) | (0x5 << 12) }, ++ { 13, 0x77700300 | (0x0) | (0x6 << 16) | (0x5 << 12) }, ++ { 14, 0x77700300 | (0x0) | (0x6 << 16) | (0x6 << 12) }, ++ { 15, 0x77700300 | (0x0) | (0x7 << 16) | (0x6 << 12) }, ++ { 16, 0x77700300 | (0x0) | (0x7 << 16) | (0x7 << 12) }, ++ { 17, 0x77700300 | (0x0) | (0x8 << 16) | (0x7 << 12) }, ++ { 18, 0x77700300 | (0x0) | (0x8 << 16) | (0x8 << 12) }, ++ { 19, 0x77700300 | (0x0) | (0x9 << 16) | (0x8 << 12) }, ++ { 20, 0x77700300 | (0x0) | (0x9 << 16) | (0x9 << 12) }, ++ { 21, 0x77700300 | (0x0) | (0xa << 16) | (0x9 << 12) }, ++ { 22, 0x77700300 | (0x0) | (0xa << 16) | (0xa << 12) }, ++ { 23, 0x77700300 | (0x0) | (0xb << 16) | (0xa << 12) }, ++ { 24, 0x77700300 | (0x0) | (0xb << 16) | (0xb << 12) }, ++ { 25, 0x77700300 | (0x0) | (0xc << 16) | (0xb << 12) }, ++ { 26, 0x77700300 | (0x0) | (0xc << 16) | (0xc << 12) }, ++ { 27, 0x77700300 | (0x0) | (0xd << 16) | (0xc << 12) }, ++ { 28, 0x77700300 | (0x0) | (0xd << 16) | (0xd << 12) }, ++ { 29, 0x77700300 | (0x0) | (0xe << 16) | (0xd << 12) }, ++ { 30, 0x77700300 | (0x0) | (0xe << 16) | (0xe << 12) }, ++ { 31, 0x77700300 | (0x0) | (0xf << 16) | (0xe << 12) }, ++ { 32, 0x77700300 | (0x0) | (0xf << 16) | (0xf << 12) }, ++ ++ { 34, 0x77700300 | (0x1) | (0x8 << 16) | (0x7 << 12) }, ++ { 36, 0x77700300 | (0x1) | (0x8 << 16) | (0x8 << 12) }, ++ { 38, 0x77700300 | (0x1) | (0x9 << 16) | (0x8 << 12) }, ++ { 40, 0x77700300 | (0x1) | (0x9 << 16) | (0x9 << 12) }, ++ { 42, 0x77700300 | (0x1) | (0xa << 16) | (0x9 << 12) }, ++ { 44, 0x77700300 | (0x1) | (0xa << 16) | (0xa << 12) }, ++ { 46, 0x77700300 | (0x1) | (0xb << 16) | (0xa << 12) }, ++ { 48, 0x77700300 | (0x1) | (0xb << 16) | (0xb << 12) }, ++ { 50, 0x77700300 | (0x1) | (0xc << 16) | (0xb << 12) }, ++ { 52, 0x77700300 | (0x1) | (0xc << 16) | (0xc << 12) }, ++ { 54, 0x77700300 | (0x1) | (0xd << 16) | (0xc << 12) }, ++ { 56, 0x77700300 | (0x1) | (0xd << 16) | (0xd << 12) }, ++ { 58, 0x77700300 | (0x1) | (0xe << 16) | (0xd << 12) }, ++ { 60, 0x77700300 | (0x1) | (0xe << 16) | (0xe << 12) }, ++ { 62, 0x77700300 | (0x1) | (0xf << 16) | (0xe << 12) }, ++ { 64, 0x77700300 | (0x1) | (0xf << 16) | (0xf << 12) }, ++ ++ { 68, 0x77700300 | (0x2) | (0x8 << 16) | (0x7 << 12) }, ++ { 72, 0x77700300 | (0x2) | (0x8 << 16) | (0x8 << 12) }, ++ { 76, 0x77700300 | (0x2) | (0x9 << 16) | (0x8 << 12) }, ++ { 80, 0x77700300 | (0x2) | (0x9 << 16) | (0x9 << 12) }, ++ { 84, 0x77700300 | (0x2) | (0xa << 16) | (0x9 << 12) }, ++ { 88, 0x77700300 | (0x2) | (0xa << 16) | (0xa << 12) }, ++ { 92, 0x77700300 | (0x2) | (0xb << 16) | (0xa << 12) }, ++ { 96, 0x77700300 | (0x2) | (0xb << 16) | (0xb << 12) }, ++ { 100, 0x77700300 | (0x2) | (0xc << 16) | (0xb << 12) }, ++ { 104, 0x77700300 | (0x2) | (0xc << 16) | (0xc << 12) }, ++ { 108, 0x77700300 | (0x2) | (0xd << 16) | (0xc << 12) }, ++ { 112, 0x77700300 | (0x2) | (0xd << 16) | (0xd << 12) }, ++ { 116, 0x77700300 | (0x2) | (0xe << 16) | (0xd << 12) }, ++ { 120, 0x77700300 | (0x2) | (0xe << 16) | (0xe << 12) }, ++ { 124, 0x77700300 | (0x2) | (0xf << 16) | (0xe << 12) }, ++ { 128, 0x77700300 | (0x2) | (0xf << 16) | (0xf << 12) }, ++ ++ { 136, 0x77700300 | (0x3) | (0x8 << 16) | (0x7 << 12) }, ++ { 144, 0x77700300 | (0x3) | (0x8 << 16) | (0x8 << 12) }, ++ { 152, 0x77700300 | (0x3) | (0x9 << 16) | (0x8 << 12) }, ++ { 160, 0x77700300 | (0x3) | (0x9 << 16) | (0x9 << 12) }, ++ { 168, 0x77700300 | (0x3) | (0xa << 16) | (0x9 << 12) }, ++ { 176, 0x77700300 | (0x3) | (0xa << 16) | (0xa << 12) }, ++ { 184, 0x77700300 | (0x3) | (0xb << 16) | (0xa << 12) }, ++ { 192, 0x77700300 | (0x3) | (0xb << 16) | (0xb << 12) }, ++ { 200, 0x77700300 | (0x3) | (0xc << 16) | (0xb << 12) }, ++ { 208, 0x77700300 | (0x3) | (0xc << 16) | (0xc << 12) }, ++ { 216, 0x77700300 | (0x3) | (0xd << 16) | (0xc << 12) }, ++ { 224, 0x77700300 | (0x3) | (0xd << 16) | (0xd << 12) }, ++ { 232, 0x77700300 | (0x3) | (0xe << 16) | (0xd << 12) }, ++ { 240, 0x77700300 | (0x3) | (0xe << 16) | (0xe << 12) }, ++ { 248, 0x77700300 | (0x3) | (0xf << 16) | (0xe << 12) }, ++ { 256, 0x77700300 | (0x3) | (0xf << 16) | (0xf << 12) }, ++ ++ { 272, 0x77700300 | (0x4) | (0x8 << 16) | (0x7 << 12) }, ++ { 288, 0x77700300 | (0x4) | (0x8 << 16) | (0x8 << 12) }, ++ { 304, 0x77700300 | (0x4) | (0x9 << 16) | (0x8 << 12) }, ++ { 320, 0x77700300 | (0x4) | (0x9 << 16) | (0x9 << 12) }, ++ { 336, 0x77700300 | (0x4) | (0xa << 16) | (0x9 << 12) }, ++ { 352, 0x77700300 | (0x4) | (0xa << 16) | (0xa << 12) }, ++ { 368, 0x77700300 | (0x4) | (0xb << 16) | (0xa << 12) }, ++ { 384, 0x77700300 | (0x4) | (0xb << 16) | (0xb << 12) }, ++ { 400, 0x77700300 | (0x4) | (0xc << 16) | (0xb << 12) }, ++ { 416, 0x77700300 | (0x4) | (0xc << 16) | (0xc << 12) }, ++ { 432, 0x77700300 | (0x4) | (0xd << 16) | (0xc << 12) }, ++ { 448, 0x77700300 | (0x4) | (0xd << 16) | (0xd << 12) }, ++ { 464, 0x77700300 | (0x4) | (0xe << 16) | (0xd << 12) }, ++ { 480, 0x77700300 | (0x4) | (0xe << 16) | (0xe << 12) }, ++ { 496, 0x77700300 | (0x4) | (0xf << 16) | (0xe << 12) }, ++ { 512, 0x77700300 | (0x4) | (0xf << 16) | (0xf << 12) }, ++ ++ { 544, 0x77700300 | (0x5) | (0x8 << 16) | (0x7 << 12) }, ++ { 576, 0x77700300 | (0x5) | (0x8 << 16) | (0x8 << 12) }, ++ { 608, 0x77700300 | (0x5) | (0x9 << 16) | (0x8 << 12) }, ++ { 640, 0x77700300 | (0x5) | (0x9 << 16) | (0x9 << 12) }, ++ { 672, 0x77700300 | (0x5) | (0xa << 16) | (0x9 << 12) }, ++ { 704, 0x77700300 | (0x5) | (0xa << 16) | (0xa << 12) }, ++ { 736, 0x77700300 | (0x5) | (0xb << 16) | (0xa << 12) }, ++ { 768, 0x77700300 | (0x5) | (0xb << 16) | (0xb << 12) }, ++ { 800, 0x77700300 | (0x5) | (0xc << 16) | (0xb << 12) }, ++ { 832, 0x77700300 | (0x5) | (0xc << 16) | (0xc << 12) }, ++ { 864, 0x77700300 | (0x5) | (0xd << 16) | (0xc << 12) }, ++ { 896, 0x77700300 | (0x5) | (0xd << 16) | (0xd << 12) }, ++ { 928, 0x77700300 | (0x5) | (0xe << 16) | (0xd << 12) }, ++ { 960, 0x77700300 | (0x5) | (0xe << 16) | (0xe << 12) }, ++ { 992, 0x77700300 | (0x5) | (0xf << 16) | (0xe << 12) }, ++ { 1024, 0x77700300 | (0x5) | (0xf << 16) | (0xf << 12) }, ++ ++ { 1088, 0x77700300 | (0x6) | (0x8 << 16) | (0x7 << 12) }, ++ { 1152, 0x77700300 | (0x6) | (0x8 << 16) | (0x8 << 12) }, ++ { 1216, 0x77700300 | (0x6) | (0x9 << 16) | (0x8 << 12) }, ++ { 1280, 0x77700300 | (0x6) | (0x9 << 16) | (0x9 << 12) }, ++ { 1344, 0x77700300 | (0x6) | (0xa << 16) | (0x9 << 12) }, ++ { 1408, 0x77700300 | (0x6) | (0xa << 16) | (0xa << 12) }, ++ { 1472, 0x77700300 | (0x6) | (0xb << 16) | (0xa << 12) }, ++ { 1536, 0x77700300 | (0x6) | (0xb << 16) | (0xb << 12) }, ++ { 1600, 0x77700300 | (0x6) | (0xc << 16) | (0xb << 12) }, ++ { 1664, 0x77700300 | (0x6) | (0xc << 16) | (0xc << 12) }, ++ { 1728, 0x77700300 | (0x6) | (0xd << 16) | (0xc << 12) }, ++ { 1792, 0x77700300 | (0x6) | (0xd << 16) | (0xd << 12) }, ++ { 1856, 0x77700300 | (0x6) | (0xe << 16) | (0xd << 12) }, ++ { 1920, 0x77700300 | (0x6) | (0xe << 16) | (0xe << 12) }, ++ { 1984, 0x77700300 | (0x6) | (0xf << 16) | (0xe << 12) }, ++ { 2048, 0x77700300 | (0x6) | (0xf << 16) | (0xf << 12) }, ++ ++ { 2176, 0x77700300 | (0x7) | (0x8 << 16) | (0x7 << 12) }, ++ { 2304, 0x77700300 | (0x7) | (0x8 << 16) | (0x8 << 12) }, ++ { 2432, 0x77700300 | (0x7) | (0x9 << 16) | (0x8 << 12) }, ++ { 2560, 0x77700300 | (0x7) | (0x9 << 16) | (0x9 << 12) }, ++ { 2688, 0x77700300 | (0x7) | (0xa << 16) | (0x9 << 12) }, ++ { 2816, 0x77700300 | (0x7) | (0xa << 16) | (0xa << 12) }, ++ { 2944, 0x77700300 | (0x7) | (0xb << 16) | (0xa << 12) }, ++ { 3072, 0x77700300 | (0x7) | (0xb << 16) | (0xb << 12) }, ++#else ++ /* Divisor : [3:0] : [18:16]: [13:12] */ ++ { 6, 0x77700300 | (0x0) | (0x2 << 16) | (0x2 << 12) }, ++ { 7, 0x77700300 | (0x0) | (0x3 << 16) | (0x2 << 12) }, ++ { 8, 0x77700300 | (0x0) | (0x3 << 16) | (0x3 << 12) }, ++ { 9, 0x77700300 | (0x0) | (0x4 << 16) | (0x3 << 12) }, ++ { 10, 0x77700300 | (0x0) | (0x4 << 16) | (0x4 << 12) }, ++ { 11, 0x77700300 | (0x0) | (0x5 << 16) | (0x4 << 12) }, ++ { 12, 0x77700300 | (0x0) | (0x5 << 16) | (0x5 << 12) }, ++ { 13, 0x77700300 | (0x0) | (0x6 << 16) | (0x5 << 12) }, ++ { 14, 0x77700300 | (0x0) | (0x6 << 16) | (0x6 << 12) }, ++ { 15, 0x77700300 | (0x0) | (0x7 << 16) | (0x6 << 12) }, ++ { 16, 0x77700300 | (0x0) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 18, 0x77700300 | (0x1) | (0x4 << 16) | (0x3 << 12) }, ++ { 20, 0x77700300 | (0x1) | (0x4 << 16) | (0x4 << 12) }, ++ { 22, 0x77700300 | (0x1) | (0x5 << 16) | (0x4 << 12) }, ++ { 24, 0x77700300 | (0x1) | (0x5 << 16) | (0x5 << 12) }, ++ { 26, 0x77700300 | (0x1) | (0x6 << 16) | (0x5 << 12) }, ++ { 28, 0x77700300 | (0x1) | (0x6 << 16) | (0x6 << 12) }, ++ { 30, 0x77700300 | (0x1) | (0x7 << 16) | (0x6 << 12) }, ++ { 32, 0x77700300 | (0x1) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 36, 0x77700300 | (0x2) | (0x4 << 16) | (0x3 << 12) }, ++ { 40, 0x77700300 | (0x2) | (0x4 << 16) | (0x4 << 12) }, ++ { 44, 0x77700300 | (0x2) | (0x5 << 16) | (0x4 << 12) }, ++ { 48, 0x77700300 | (0x2) | (0x5 << 16) | (0x5 << 12) }, ++ { 52, 0x77700300 | (0x2) | (0x6 << 16) | (0x5 << 12) }, ++ { 56, 0x77700300 | (0x2) | (0x6 << 16) | (0x6 << 12) }, ++ { 60, 0x77700300 | (0x2) | (0x7 << 16) | (0x6 << 12) }, ++ { 64, 0x77700300 | (0x2) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 72, 0x77700300 | (0x3) | (0x4 << 16) | (0x3 << 12) }, ++ { 80, 0x77700300 | (0x3) | (0x4 << 16) | (0x4 << 12) }, ++ { 88, 0x77700300 | (0x3) | (0x5 << 16) | (0x4 << 12) }, ++ { 96, 0x77700300 | (0x3) | (0x5 << 16) | (0x5 << 12) }, ++ { 104, 0x77700300 | (0x3) | (0x6 << 16) | (0x5 << 12) }, ++ { 112, 0x77700300 | (0x3) | (0x6 << 16) | (0x6 << 12) }, ++ { 120, 0x77700300 | (0x3) | (0x7 << 16) | (0x6 << 12) }, ++ { 128, 0x77700300 | (0x3) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 144, 0x77700300 | (0x4) | (0x4 << 16) | (0x3 << 12) }, ++ { 160, 0x77700300 | (0x4) | (0x4 << 16) | (0x4 << 12) }, ++ { 176, 0x77700300 | (0x4) | (0x5 << 16) | (0x4 << 12) }, ++ { 192, 0x77700300 | (0x4) | (0x5 << 16) | (0x5 << 12) }, ++ { 208, 0x77700300 | (0x4) | (0x6 << 16) | (0x5 << 12) }, ++ { 224, 0x77700300 | (0x4) | (0x6 << 16) | (0x6 << 12) }, ++ { 240, 0x77700300 | (0x4) | (0x7 << 16) | (0x6 << 12) }, ++ { 256, 0x77700300 | (0x4) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 288, 0x77700300 | (0x5) | (0x4 << 16) | (0x3 << 12) }, ++ { 320, 0x77700300 | (0x5) | (0x4 << 16) | (0x4 << 12) }, ++ { 352, 0x77700300 | (0x5) | (0x5 << 16) | (0x4 << 12) }, ++ { 384, 0x77700300 | (0x5) | (0x5 << 16) | (0x5 << 12) }, ++ { 416, 0x77700300 | (0x5) | (0x6 << 16) | (0x5 << 12) }, ++ { 448, 0x77700300 | (0x5) | (0x6 << 16) | (0x6 << 12) }, ++ { 480, 0x77700300 | (0x5) | (0x7 << 16) | (0x6 << 12) }, ++ { 512, 0x77700300 | (0x5) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 576, 0x77700300 | (0x6) | (0x4 << 16) | (0x3 << 12) }, ++ { 640, 0x77700300 | (0x6) | (0x4 << 16) | (0x4 << 12) }, ++ { 704, 0x77700300 | (0x6) | (0x5 << 16) | (0x4 << 12) }, ++ { 768, 0x77700300 | (0x6) | (0x5 << 16) | (0x5 << 12) }, ++ { 832, 0x77700300 | (0x6) | (0x6 << 16) | (0x5 << 12) }, ++ { 896, 0x77700300 | (0x6) | (0x6 << 16) | (0x6 << 12) }, ++ { 960, 0x77700300 | (0x6) | (0x7 << 16) | (0x6 << 12) }, ++ { 1024, 0x77700300 | (0x6) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 1152, 0x77700300 | (0x7) | (0x4 << 16) | (0x3 << 12) }, ++ { 1280, 0x77700300 | (0x7) | (0x4 << 16) | (0x4 << 12) }, ++ { 1408, 0x77700300 | (0x7) | (0x5 << 16) | (0x4 << 12) }, ++ { 1536, 0x77700300 | (0x7) | (0x5 << 16) | (0x5 << 12) }, ++ { 1664, 0x77700300 | (0x7) | (0x6 << 16) | (0x5 << 12) }, ++ { 1792, 0x77700300 | (0x7) | (0x6 << 16) | (0x6 << 12) }, ++ { 1920, 0x77700300 | (0x7) | (0x7 << 16) | (0x6 << 12) }, ++ { 2048, 0x77700300 | (0x7) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 2304, 0x77700300 | (0x8) | (0x4 << 16) | (0x3 << 12) }, ++ { 2560, 0x77700300 | (0x8) | (0x4 << 16) | (0x4 << 12) }, ++ { 2816, 0x77700300 | (0x8) | (0x5 << 16) | (0x4 << 12) }, ++ { 3072, 0x77700300 | (0x8) | (0x5 << 16) | (0x5 << 12) }, ++ { 3328, 0x77700300 | (0x8) | (0x6 << 16) | (0x5 << 12) }, ++ { 3584, 0x77700300 | (0x8) | (0x6 << 16) | (0x6 << 12) }, ++ { 3840, 0x77700300 | (0x8) | (0x7 << 16) | (0x6 << 12) }, ++ { 4096, 0x77700300 | (0x8) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 4608, 0x77700300 | (0x9) | (0x4 << 16) | (0x3 << 12) }, ++ { 5120, 0x77700300 | (0x9) | (0x4 << 16) | (0x4 << 12) }, ++ { 5632, 0x77700300 | (0x9) | (0x5 << 16) | (0x4 << 12) }, ++ { 6144, 0x77700300 | (0x9) | (0x5 << 16) | (0x5 << 12) }, ++ { 6656, 0x77700300 | (0x9) | (0x6 << 16) | (0x5 << 12) }, ++ { 7168, 0x77700300 | (0x9) | (0x6 << 16) | (0x6 << 12) }, ++ { 7680, 0x77700300 | (0x9) | (0x7 << 16) | (0x6 << 12) }, ++ { 8192, 0x77700300 | (0x9) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 9216, 0x77700300 | (0xa) | (0x4 << 16) | (0x3 << 12) }, ++ { 10240, 0x77700300 | (0xa) | (0x4 << 16) | (0x4 << 12) }, ++ { 11264, 0x77700300 | (0xa) | (0x5 << 16) | (0x4 << 12) }, ++ { 12288, 0x77700300 | (0xa) | (0x5 << 16) | (0x5 << 12) }, ++ { 13312, 0x77700300 | (0xa) | (0x6 << 16) | (0x5 << 12) }, ++ { 14336, 0x77700300 | (0xa) | (0x6 << 16) | (0x6 << 12) }, ++ { 15360, 0x77700300 | (0xa) | (0x7 << 16) | (0x6 << 12) }, ++ { 16384, 0x77700300 | (0xa) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 18432, 0x77700300 | (0xb) | (0x4 << 16) | (0x3 << 12) }, ++ { 20480, 0x77700300 | (0xb) | (0x4 << 16) | (0x4 << 12) }, ++ { 22528, 0x77700300 | (0xb) | (0x5 << 16) | (0x4 << 12) }, ++ { 24576, 0x77700300 | (0xb) | (0x5 << 16) | (0x5 << 12) }, ++ { 26624, 0x77700300 | (0xb) | (0x6 << 16) | (0x5 << 12) }, ++ { 28672, 0x77700300 | (0xb) | (0x6 << 16) | (0x6 << 12) }, ++ { 30720, 0x77700300 | (0xb) | (0x7 << 16) | (0x6 << 12) }, ++ { 32768, 0x77700300 | (0xb) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 36864, 0x77700300 | (0xc) | (0x4 << 16) | (0x3 << 12) }, ++ { 40960, 0x77700300 | (0xc) | (0x4 << 16) | (0x4 << 12) }, ++ { 45056, 0x77700300 | (0xc) | (0x5 << 16) | (0x4 << 12) }, ++ { 49152, 0x77700300 | (0xc) | (0x5 << 16) | (0x5 << 12) }, ++ { 53248, 0x77700300 | (0xc) | (0x6 << 16) | (0x5 << 12) }, ++ { 57344, 0x77700300 | (0xc) | (0x6 << 16) | (0x6 << 12) }, ++ { 61440, 0x77700300 | (0xc) | (0x7 << 16) | (0x6 << 12) }, ++ { 65536, 0x77700300 | (0xc) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 73728, 0x77700300 | (0xd) | (0x4 << 16) | (0x3 << 12) }, ++ { 81920, 0x77700300 | (0xd) | (0x4 << 16) | (0x4 << 12) }, ++ { 90112, 0x77700300 | (0xd) | (0x5 << 16) | (0x4 << 12) }, ++ { 98304, 0x77700300 | (0xd) | (0x5 << 16) | (0x5 << 12) }, ++ { 106496, 0x77700300 | (0xd) | (0x6 << 16) | (0x5 << 12) }, ++ { 114688, 0x77700300 | (0xd) | (0x6 << 16) | (0x6 << 12) }, ++ { 122880, 0x77700300 | (0xd) | (0x7 << 16) | (0x6 << 12) }, ++ { 131072, 0x77700300 | (0xd) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 147456, 0x77700300 | (0xe) | (0x4 << 16) | (0x3 << 12) }, ++ { 163840, 0x77700300 | (0xe) | (0x4 << 16) | (0x4 << 12) }, ++ { 180224, 0x77700300 | (0xe) | (0x5 << 16) | (0x4 << 12) }, ++ { 196608, 0x77700300 | (0xe) | (0x5 << 16) | (0x5 << 12) }, ++ { 212992, 0x77700300 | (0xe) | (0x6 << 16) | (0x5 << 12) }, ++ { 229376, 0x77700300 | (0xe) | (0x6 << 16) | (0x6 << 12) }, ++ { 245760, 0x77700300 | (0xe) | (0x7 << 16) | (0x6 << 12) }, ++ { 262144, 0x77700300 | (0xe) | (0x7 << 16) | (0x7 << 12) }, ++ ++ { 294912, 0x77700300 | (0xf) | (0x4 << 16) | (0x3 << 12) }, ++ { 327680, 0x77700300 | (0xf) | (0x4 << 16) | (0x4 << 12) }, ++ { 360448, 0x77700300 | (0xf) | (0x5 << 16) | (0x4 << 12) }, ++ { 393216, 0x77700300 | (0xf) | (0x5 << 16) | (0x5 << 12) }, ++ { 425984, 0x77700300 | (0xf) | (0x6 << 16) | (0x5 << 12) }, ++ { 458752, 0x77700300 | (0xf) | (0x6 << 16) | (0x6 << 12) }, ++ { 491520, 0x77700300 | (0xf) | (0x7 << 16) | (0x6 << 12) }, ++ { 524288, 0x77700300 | (0xf) | (0x7 << 16) | (0x7 << 12) }, ++#endif ++}; ++ ++static inline void ast_i2c_write(struct ast_i2c_bus *i2c_bus, u32 val, u32 reg) ++{ ++#if 0 ++ printf("%x: W : reg %x , val: %x \n",i2c_bus->reg_base, reg, val); ++#endif ++ __raw_writel(val, i2c_bus->reg_base + reg); ++} ++ ++static inline u32 ast_i2c_read(struct ast_i2c_bus *i2c_bus, u32 reg) ++{ ++#if 0 ++ u32 val = __raw_readl(i2c_bus->reg_base + reg); ++ printf("%x: R : reg %x , val: %x \n",i2c_bus->reg_base, reg, val); ++ return val; ++#else ++ return __raw_readl(i2c_bus->reg_base + reg); ++#endif ++} ++ ++static u32 select_i2c_clock(unsigned int bus_clk) ++{ ++#if 0 ++ unsigned int clk, inc = 0, div, divider_ratio; ++ u32 SCL_Low, SCL_High, data; ++ ++ clk = ast_get_pclk(); ++// debug("pclk = %d \n",clk); ++ divider_ratio = clk / bus_clk; ++ for (div = 0; divider_ratio >= 16; div++) ++ { ++ inc |= (divider_ratio & 1); ++ divider_ratio >>= 1; ++ } ++ divider_ratio += inc; ++ SCL_Low = (divider_ratio >> 1) - 1; ++ SCL_High = divider_ratio - SCL_Low - 2; ++ data = 0x77700300 | (SCL_High << 16) | (SCL_Low << 12) | div; ++// printk("I2CD04 for %d = %08X\n", target_speed, data); ++ return data; ++#else ++ int i; ++ unsigned int clk; ++ u32 data; ++ ++ clk = ast_get_pclk(); ++ // debug("pclk = %d \n",clk); ++ ++ for (i = 0; ++ i < sizeof(i2c_timing_table) / sizeof(struct ast_i2c_timing_table); ++ i++) { ++ if ((clk / i2c_timing_table[i].divisor) < bus_clk) { ++ break; ++ } ++ } ++ data = i2c_timing_table[i].timing; ++ // printk("divisor [%d], timing [%x] \n", i2c_timing_table[i].divisor, ++ // i2c_timing_table[i].timing); ++ return data; ++#endif ++} ++ ++static int ast_i2c_wait_isr(struct ast_i2c_bus *i2c_bus, u32 flag) ++{ ++ int timeout = 0; ++ ++ while (!(ast_i2c_read(i2c_bus, I2C_INTR_STS_REG) & flag) && ++ (timeout < I2C_TIMEOUT_COUNT)) { ++ udelay(I2C_SLEEP_US); ++ timeout++; ++ } ++ ++ /* Clear Interrupt */ ++ ast_i2c_write(i2c_bus, 0xfffffff, I2C_INTR_STS_REG); ++ ++ if (timeout >= I2C_TIMEOUT_COUNT) { ++ debug("%s timed out:- flag: %x\n", __func__, flag); ++ return -ETIMEDOUT; ++ } ++ ++ return 0; ++} ++ ++static int ast_i2c_wait_tx(struct ast_i2c_bus *i2c_bus) ++{ ++ int sts; ++ int timeout = 0; ++ while (1) { ++ sts = ast_i2c_read(i2c_bus, I2C_INTR_STS_REG); ++ ++ if (timeout > I2C_TIMEOUT_COUNT) { ++ /* I2C Reset */ ++ debug("Timeout: Bus:%d, Addr:0x%02x\n", i2c_bus_num, ++ i2c_bus->addr); ++ ast_i2c_write(i2c_bus, 0, I2C_FUN_CTRL_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_MASTER_EN, ++ I2C_FUN_CTRL_REG); ++ ++ return -ETIMEDOUT; ++ } else if (sts & AST_I2CD_INTR_STS_TX_NAK) { ++ ast_i2c_write(i2c_bus, AST_I2CD_INTR_STS_TX_NAK, ++ I2C_INTR_STS_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_STOP_CMD, ++ I2C_CMD_REG); ++ ast_i2c_wait_isr(i2c_bus, ++ AST_I2CD_INTR_STS_NORMAL_STOP); ++ ++ return -EREMOTEIO; ++ } else if (sts & AST_I2CD_INTR_STS_TX_ACK) { ++ ast_i2c_write(i2c_bus, AST_I2CD_INTR_STS_TX_ACK, ++ I2C_INTR_STS_REG); ++ break; ++ } else { ++ timeout++; ++ } ++ udelay(I2C_SLEEP_US); ++ } ++ ++ return 0; ++} ++ ++static int ast_i2c_deblock(struct ast_i2c_bus *i2c_bus) ++{ ++ u32 csr; ++ int ret = 0; ++ ++ if ((csr = ast_i2c_read(i2c_bus, I2C_CMD_REG)) & ++ AST_I2CD_BUS_BUSY_STS) { ++ if ((csr & AST_I2CD_SDA_LINE_STS) && ++ (csr & AST_I2CD_SCL_LINE_STS)) { ++ /* Bus idle */ ++ debug("Bus(%d) idle\n", i2c_bus_num); ++ ret = 0; ++ } else if (csr & AST_I2CD_SDA_LINE_STS) { ++ /* send stop command */ ++ debug("Unterminated TXN in (%x), sending stop...\n", ++ csr); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_STOP_CMD, ++ I2C_CMD_REG); ++ ret = ast_i2c_wait_isr(i2c_bus, ++ AST_I2CD_INTR_STS_NORMAL_STOP); ++ } else if (csr & AST_I2CD_SCL_LINE_STS) { ++ /* Possibly stuck slave */ ++ debug("Bus stuck (%x), attempting recovery...\n", csr); ++ ast_i2c_write(i2c_bus, AST_I2CD_BUS_RECOVER_CMD_EN, ++ I2C_CMD_REG); ++ ret = ast_i2c_wait_isr(i2c_bus, ++ AST_I2CD_INTR_STS_BUS_RECOVER); ++ } else { ++ debug("Bus(%d) slave(0x%02x) busy. Reseting bus...\n", ++ i2c_bus_num, i2c_bus->addr); ++ ast_i2c_write(i2c_bus, 0, I2C_FUN_CTRL_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_MASTER_EN, ++ I2C_FUN_CTRL_REG); ++ ret = 0; ++ } ++ } ++ ++ return ret; ++} ++ ++static int ast_i2c_xfer(struct ast_i2c_bus *i2c_bus) ++{ ++ int sts, i, ret = 0; ++ ++ /* Clear Interrupt */ ++ ast_i2c_write(i2c_bus, 0xfffffff, I2C_INTR_STS_REG); ++ ++ /* Check for bus busy */ ++ ret = ast_i2c_deblock(i2c_bus); ++ if (ret != 0) ++ return ret; ++ ++ // first start ++ debug(" %sing %d byte%s %s 0x%02x\n", i2c_bus->flags ? "read" : "write", ++ i2c_bus->d_len, i2c_bus->d_len > 1 ? "s" : "", ++ i2c_bus->flags ? "from" : "to", i2c_bus->addr); ++ ++ if (i2c_bus->flags) { ++ // READ ++ if (i2c_bus->a_len) { ++ // send start ++ ast_i2c_write(i2c_bus, (i2c_bus->addr << 1), ++ I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, ++ AST_I2CD_M_TX_CMD | AST_I2CD_M_START_CMD, ++ I2C_CMD_REG); ++ ++ /* Wait for ACK */ ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ ++ /* Send Offset */ ++ for (i = 0; i < i2c_bus->a_len; i++) { ++ debug("offset [%x] \n", i2c_bus->a_buf[i]); ++ ast_i2c_write(i2c_bus, i2c_bus->a_buf[i], ++ I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_TX_CMD, ++ I2C_CMD_REG); ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ } ++ } ++ ++ // repeat-start ++ ast_i2c_write(i2c_bus, (i2c_bus->addr << 1) | 0x1, ++ I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_TX_CMD | AST_I2CD_M_START_CMD, ++ I2C_CMD_REG); ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ ++ for (i = 0; i < i2c_bus->d_len; i++) { ++ if (i == (i2c_bus->d_len - 1)) { ++ ast_i2c_write(i2c_bus, ++ AST_I2CD_M_RX_CMD | ++ AST_I2CD_M_S_RX_CMD_LAST, ++ I2C_CMD_REG); ++ } else { ++ ast_i2c_write(i2c_bus, AST_I2CD_M_RX_CMD, ++ I2C_CMD_REG); ++ } ++ ++ ret = ast_i2c_wait_isr(i2c_bus, ++ AST_I2CD_INTR_STS_RX_DOWN); ++ if (ret != 0) ++ return ret; ++ ++ i2c_bus->d_buf[i] = ++ (ast_i2c_read(i2c_bus, I2C_BYTE_BUF_REG) & ++ AST_I2CD_RX_BYTE_BUFFER) >> ++ 8; ++ } ++ ast_i2c_write(i2c_bus, AST_I2CD_M_STOP_CMD, I2C_CMD_REG); ++ ret = ast_i2c_wait_isr(i2c_bus, AST_I2CD_INTR_STS_NORMAL_STOP); ++ if (ret != 0) ++ return ret; ++ ++ } else { ++ // Write ++ // send start ++ ast_i2c_write(i2c_bus, (i2c_bus->addr << 1), I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_TX_CMD | AST_I2CD_M_START_CMD, ++ I2C_CMD_REG); ++ ++ /* Wait for ACK */ ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ ++ /* Send Offset */ ++ for (i = 0; i < i2c_bus->a_len; i++) { ++ debug("offset [%x] \n", i2c_bus->a_buf[i]); ++ ast_i2c_write(i2c_bus, i2c_bus->a_buf[i], ++ I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_TX_CMD, I2C_CMD_REG); ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ } ++ ++ /* Tx data */ ++ for (i = 0; i < i2c_bus->d_len; i++) { ++ debug("Tx data [%x] \n", i2c_bus->d_buf[i]); ++ ast_i2c_write(i2c_bus, i2c_bus->d_buf[i], ++ I2C_BYTE_BUF_REG); ++ ast_i2c_write(i2c_bus, AST_I2CD_M_TX_CMD, I2C_CMD_REG); ++ ret = ast_i2c_wait_tx(i2c_bus); ++ if (ret != 0) ++ return ret; ++ } ++ ast_i2c_write(i2c_bus, AST_I2CD_M_STOP_CMD, I2C_CMD_REG); ++ ret = ast_i2c_wait_isr(i2c_bus, AST_I2CD_INTR_STS_NORMAL_STOP); ++ if (ret != 0) ++ return ret; ++ } ++ ++ return 0; ++} ++ ++/*****************************************************************************/ ++ ++unsigned int i2c_get_bus_speed(void) ++{ ++ return ast_i2c[i2c_bus_num].speed; ++} ++ ++int i2c_set_bus_speed(unsigned int speed) ++{ ++ struct ast_i2c_bus *i2c_bus = &ast_i2c[i2c_bus_num]; ++ ++ /* Set AC Timing */ ++ ast_i2c_write(i2c_bus, select_i2c_clock(speed), I2C_AC_TIMING_REG1); ++ ast_i2c_write(i2c_bus, AST_NO_TIMEOUT_CTRL, I2C_AC_TIMING_REG2); ++ ++ i2c_bus->speed = speed; ++ ++ return 0; ++} ++ ++unsigned int i2c_get_base(int bus_no) ++{ ++ switch (bus_no) { ++ case 0: ++ return AST_I2C_DEV0_BASE; ++ break; ++ case 1: ++ return AST_I2C_DEV1_BASE; ++ break; ++ case 2: ++ return AST_I2C_DEV2_BASE; ++ break; ++ case 3: ++ return AST_I2C_DEV3_BASE; ++ break; ++ case 4: ++ return AST_I2C_DEV4_BASE; ++ break; ++ case 5: ++ return AST_I2C_DEV5_BASE; ++ break; ++ case 6: ++ return AST_I2C_DEV6_BASE; ++ break; ++ case 7: ++ return AST_I2C_DEV7_BASE; ++ break; ++ case 8: ++ return AST_I2C_DEV8_BASE; ++ break; ++ case 9: ++ return AST_I2C_DEV9_BASE; ++ break; ++ case 10: ++ return AST_I2C_DEV10_BASE; ++ break; ++ case 11: ++ return AST_I2C_DEV11_BASE; ++ break; ++ case 12: ++ return AST_I2C_DEV12_BASE; ++ break; ++ case 13: ++ return AST_I2C_DEV13_BASE; ++ break; ++ default: ++ printf("i2c base error \n"); ++ break; ++ }; ++ return 0; ++} ++ ++void i2c_init(int speed, int slaveaddr) ++{ ++ int i = 0; ++ struct ast_i2c_bus *i2c_bus; ++ ++ // SCU I2C Reset ++ ast_scu_init_i2c(); ++ ++ /* This will override the speed selected in the fdt for that port */ ++ debug("i2c_init(speed=%u, slaveaddr=0x%x)\n", speed, slaveaddr); ++ ++ for (i = 0; i < CONFIG_SYS_MAX_I2C_BUS; i++) { ++ i2c_bus = &ast_i2c[i]; ++ i2c_bus->reg_base = i2c_get_base(i); ++ ++ i2c_bus->speed = CONFIG_SYS_I2C_SPEED; ++ i2c_bus->state = 0; ++ ++ // I2C Multi-Pin ++ ast_scu_multi_func_i2c(i); ++ ++ // I2CG Reset ++ ast_i2c_write(i2c_bus, 0, I2C_FUN_CTRL_REG); ++ ++ // Enable Master Mode ++ ast_i2c_write(i2c_bus, AST_I2CD_MASTER_EN, I2C_FUN_CTRL_REG); ++ ++ // SLAVE mode enable ++#if 0 ++ if(slaveaddr) { ++ ast_i2c_write(i2c_bus, slaveaddr, I2C_DEV_ADDR_REG); ++ ast_i2c_write(i2c_bus, ast_i2c_read(i2c_bus,I2C_FUN_CTRL_REG) | AST_I2CD_SLAVE_EN, I2C_FUN_CTRL_REG); ++ } ++#endif ++ ++ /* Set AC Timing */ ++ i2c_set_bus_speed(speed); ++ ++ // Clear Interrupt ++ ast_i2c_write(i2c_bus, 0xfffffff, I2C_INTR_STS_REG); ++ ++ /* Set interrupt generation of I2C controller */ ++ ast_i2c_write(i2c_bus, 0, I2C_INTR_CTRL_REG); ++ } ++ ++ i2c_bus_num = 0; ++ debug("end\n"); ++} ++ ++/* Probe to see if a chip is present. */ ++int i2c_probe(uchar addr) ++{ ++ uchar a_buf[1] = { 0 }; ++ ++ struct ast_i2c_bus *i2c_bus = &ast_i2c[i2c_bus_num]; ++ ++ debug("i2c_probe[bus:%d]: addr=0x%x\n", i2c_bus_num, addr); ++ ++ i2c_bus->addr = addr; ++ i2c_bus->flags = 1; ++ i2c_bus->a_len = 1; ++ i2c_bus->a_buf = (u8 *)&a_buf; ++ i2c_bus->d_len = 1; ++ i2c_bus->d_buf = (u8 *)&a_buf; ++ ++ return ast_i2c_xfer(i2c_bus); ++} ++ ++/* Read bytes */ ++int i2c_read(uchar addr, uint offset, int alen, uchar *buffer, int len) ++{ ++ uchar xoffset[4]; ++ struct ast_i2c_bus *i2c_bus = &ast_i2c[i2c_bus_num]; ++ ++ debug("i2c_read[bus:%d]: addr=0x%x, offset=0x%x, alen=0x%x len=0x%x\n", ++ i2c_bus_num, addr, offset, alen, len); ++ ++ if (alen > 4) { ++ debug("I2C read: addr len %d not supported\n", alen); ++ return 1; ++ } ++ ++ if (alen > 0) { ++ xoffset[0] = (offset >> 24) & 0xFF; ++ xoffset[1] = (offset >> 16) & 0xFF; ++ xoffset[2] = (offset >> 8) & 0xFF; ++ xoffset[3] = offset & 0xFF; ++ } ++ ++ i2c_bus->addr = addr; ++ i2c_bus->flags = 1; ++ i2c_bus->a_len = alen; ++ i2c_bus->a_buf = &xoffset[4 - alen]; ++ i2c_bus->d_len = len; ++ i2c_bus->d_buf = buffer; ++ ++ return ast_i2c_xfer(i2c_bus); ++} ++ ++/* Write bytes */ ++int i2c_write(uchar addr, uint offset, int alen, uchar *buffer, int len) ++{ ++ uchar xoffset[4]; ++ struct ast_i2c_bus *i2c_bus = &ast_i2c[i2c_bus_num]; ++ ++ debug("i2c_write[bus:%d]: addr=0x%x, offset=0x%x, alen=0x%x len=0x%x\n", ++ i2c_bus_num, addr, offset, alen, len); ++ ++ if (alen > 0) { ++ xoffset[0] = (offset >> 24) & 0xFF; ++ xoffset[1] = (offset >> 16) & 0xFF; ++ xoffset[2] = (offset >> 8) & 0xFF; ++ xoffset[3] = offset & 0xFF; ++ } ++ ++ i2c_bus->addr = addr; ++ i2c_bus->flags = 0; ++ i2c_bus->a_len = alen; ++ i2c_bus->a_buf = &xoffset[4 - alen]; ++ i2c_bus->d_len = len; ++ i2c_bus->d_buf = buffer; ++ ++ return ast_i2c_xfer(i2c_bus); ++} ++ ++#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 (bus >= NUM_BUS) ++ return -1; ++ i2c_bus_num = bus; ++ ++ return 0; ++} ++#endif +diff --git a/drivers/i2c/ast_i2c.h b/drivers/i2c/ast_i2c.h +new file mode 100644 +index 0000000..7cff0e5 +--- /dev/null ++++ b/drivers/i2c/ast_i2c.h +@@ -0,0 +1,131 @@ ++/* SPDX-License-Identifier: GPL-2.0+ */ ++/* ++ * Copyright (C) 2012-2020 ASPEED Technology Inc. ++ * Copyright 2016 IBM Corporation ++ * Copyright 2017 Google, Inc. ++ */ ++#ifndef __AST_I2C_H_ ++#define __AST_I2C_H_ ++ ++struct ast_i2c_regs { ++ u32 fcr; ++ u32 cactcr1; ++ u32 cactcr2; ++ u32 icr; ++ u32 isr; ++ u32 csr; ++ u32 sdar; ++ u32 pbcr; ++ u32 trbbr; ++#ifdef CONFIG_ASPEED_AST2500 ++ u32 dma_mbar; ++ u32 dma_tlr; ++#endif ++}; ++ ++/* Device Register Definition */ ++/* 0x00 : I2CD Function Control Register */ ++#define I2CD_BUFF_SEL_MASK (0x7 << 20) ++#define I2CD_BUFF_SEL(x) (x << 20) ++#define I2CD_M_SDA_LOCK_EN (0x1 << 16) ++#define I2CD_MULTI_MASTER_DIS (0x1 << 15) ++#define I2CD_M_SCL_DRIVE_EN (0x1 << 14) ++#define I2CD_MSB_STS (0x1 << 9) ++#define I2CD_SDA_DRIVE_1T_EN (0x1 << 8) ++#define I2CD_M_SDA_DRIVE_1T_EN (0x1 << 7) ++#define I2CD_M_HIGH_SPEED_EN (0x1 << 6) ++#define I2CD_DEF_ADDR_EN (0x1 << 5) ++#define I2CD_DEF_ALERT_EN (0x1 << 4) ++#define I2CD_DEF_ARP_EN (0x1 << 3) ++#define I2CD_DEF_GCALL_EN (0x1 << 2) ++#define I2CD_SLAVE_EN (0x1 << 1) ++#define I2CD_MASTER_EN (0x1) ++ ++/* 0x04 : I2CD Clock and AC Timing Control Register #1 */ ++/* Base register value. These bits are always set by the driver. */ ++#define I2CD_CACTC_BASE 0xfff00300 ++#define I2CD_TCKHIGH_SHIFT 16 ++#define I2CD_TCKLOW_SHIFT 12 ++#define I2CD_THDDAT_SHIFT 10 ++#define I2CD_TO_DIV_SHIFT 8 ++#define I2CD_BASE_DIV_SHIFT 0 ++ ++/* 0x08 : I2CD Clock and AC Timing Control Register #2 */ ++#define I2CD_tTIMEOUT 1 ++#define I2CD_NO_TIMEOUT_CTRL 0 ++ ++/* 0x0c : I2CD Interrupt Control Register & ++ * 0x10 : I2CD Interrupt Status Register ++ * ++ * These share bit definitions, so use the same values for the enable & ++ * status bits. ++ */ ++#define I2CD_INTR_SDA_DL_TIMEOUT (0x1 << 14) ++#define I2CD_INTR_BUS_RECOVER_DONE (0x1 << 13) ++#define I2CD_INTR_SMBUS_ALERT (0x1 << 12) ++#define I2CD_INTR_SMBUS_ARP_ADDR (0x1 << 11) ++#define I2CD_INTR_SMBUS_DEV_ALERT_ADDR (0x1 << 10) ++#define I2CD_INTR_SMBUS_DEF_ADDR (0x1 << 9) ++#define I2CD_INTR_GCALL_ADDR (0x1 << 8) ++#define I2CD_INTR_SLAVE_MATCH (0x1 << 7) ++#define I2CD_INTR_SCL_TIMEOUT (0x1 << 6) ++#define I2CD_INTR_ABNORMAL (0x1 << 5) ++#define I2CD_INTR_NORMAL_STOP (0x1 << 4) ++#define I2CD_INTR_ARBIT_LOSS (0x1 << 3) ++#define I2CD_INTR_RX_DONE (0x1 << 2) ++#define I2CD_INTR_TX_NAK (0x1 << 1) ++#define I2CD_INTR_TX_ACK (0x1 << 0) ++ ++/* 0x14 : I2CD Command/Status Register */ ++#define I2CD_SDA_OE (0x1 << 28) ++#define I2CD_SDA_O (0x1 << 27) ++#define I2CD_SCL_OE (0x1 << 26) ++#define I2CD_SCL_O (0x1 << 25) ++#define I2CD_TX_TIMING (0x1 << 24) ++#define I2CD_TX_STATUS (0x1 << 23) ++ ++/* Tx State Machine */ ++#define I2CD_IDLE 0x0 ++#define I2CD_MACTIVE 0x8 ++#define I2CD_MSTART 0x9 ++#define I2CD_MSTARTR 0xa ++#define I2CD_MSTOP 0xb ++#define I2CD_MTXD 0xc ++#define I2CD_MRXACK 0xd ++#define I2CD_MRXD 0xe ++#define I2CD_MTXACK 0xf ++#define I2CD_SWAIT 0x1 ++#define I2CD_SRXD 0x4 ++#define I2CD_STXACK 0x5 ++#define I2CD_STXD 0x6 ++#define I2CD_SRXACK 0x7 ++#define I2CD_RECOVER 0x3 ++ ++#define I2CD_SCL_LINE_STS (0x1 << 18) ++#define I2CD_SDA_LINE_STS (0x1 << 17) ++#define I2CD_BUS_BUSY_STS (0x1 << 16) ++#define I2CD_SDA_OE_OUT_DIR (0x1 << 15) ++#define I2CD_SDA_O_OUT_DIR (0x1 << 14) ++#define I2CD_SCL_OE_OUT_DIR (0x1 << 13) ++#define I2CD_SCL_O_OUT_DIR (0x1 << 12) ++#define I2CD_BUS_RECOVER_CMD (0x1 << 11) ++#define I2CD_S_ALT_EN (0x1 << 10) ++#define I2CD_RX_DMA_ENABLE (0x1 << 9) ++#define I2CD_TX_DMA_ENABLE (0x1 << 8) ++ ++/* Command Bit */ ++#define I2CD_RX_BUFF_ENABLE (0x1 << 7) ++#define I2CD_TX_BUFF_ENABLE (0x1 << 6) ++#define I2CD_M_STOP_CMD (0x1 << 5) ++#define I2CD_M_S_RX_CMD_LAST (0x1 << 4) ++#define I2CD_M_RX_CMD (0x1 << 3) ++#define I2CD_S_TX_CMD (0x1 << 2) ++#define I2CD_M_TX_CMD (0x1 << 1) ++#define I2CD_M_START_CMD 0x1 ++ ++#define I2CD_RX_DATA_SHIFT 8 ++#define I2CD_RX_DATA_MASK (0xff << I2CD_RX_DATA_SHIFT) ++ ++#define I2C_HIGHSPEED_RATE 400000 ++ ++#endif /* __AST_I2C_H_ */ +diff --git a/include/configs/ast-common.h b/include/configs/ast-common.h +index b7d7192..0bc7f2d 100644 +--- a/include/configs/ast-common.h ++++ b/include/configs/ast-common.h +@@ -84,6 +84,11 @@ + #define CONFIG_SYS_MAXARGS 16 + #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE + ++/* I2C config */ ++#define CONFIG_I2C_MULTI_BUS 1 ++#define CONFIG_SYS_MAX_I2C_BUS 8 ++#define CONFIG_SYS_I2C_SPEED 100000 ++ + /* + * Optional MTD and UBI support + */ +-- +2.7.4 + |