Add lpi2c driver for i.MX7ULP. Need to enable the two options to use this driver: CONFIG_DM_I2C=y CONFIG_SYS_LPI2C_IMX=y
Signed-off-by: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de Cc: Heiko Schocher hs@denx.de --- arch/arm/include/asm/arch-mx7ulp/imx_lpi2c.h | 520 +++++++++++++++++++++++++++ drivers/i2c/Kconfig | 6 + drivers/i2c/Makefile | 1 + drivers/i2c/imx_lpi2c.c | 462 ++++++++++++++++++++++++ 4 files changed, 989 insertions(+) create mode 100644 arch/arm/include/asm/arch-mx7ulp/imx_lpi2c.h create mode 100644 drivers/i2c/imx_lpi2c.c
diff --git a/arch/arm/include/asm/arch-mx7ulp/imx_lpi2c.h b/arch/arm/include/asm/arch-mx7ulp/imx_lpi2c.h new file mode 100644 index 0000000..f1b3113 --- /dev/null +++ b/arch/arm/include/asm/arch-mx7ulp/imx_lpi2c.h @@ -0,0 +1,520 @@ +/* + * Copyright 2016 Freescale Semiconductors, Inc. + * + * I2CLP driver for i.MX + * + * SPDX-License-Identifier: GPL-2.0+ + * + */ +#ifndef __IMX_LPI2C_H__ +#define __IMX_LPI2C_H__ + +struct imx_lpi2c_bus { + int index; + ulong base; + ulong driver_data; + int speed; + struct i2c_pads_info *pads_info; + struct udevice *bus; +}; + +struct imx_lpi2c_reg { + u32 verid; + u32 param; + u8 reserved_0[8]; + u32 mcr; + u32 msr; + u32 mier; + u32 mder; + u32 mcfgr0; + u32 mcfgr1; + u32 mcfgr2; + u32 mcfgr3; + u8 reserved_1[16]; + u32 mdmr; + u8 reserved_2[4]; + u32 mccr0; + u8 reserved_3[4]; + u32 mccr1; + u8 reserved_4[4]; + u32 mfcr; + u32 mfsr; + u32 mtdr; + u8 reserved_5[12]; + u32 mrdr; + u8 reserved_6[156]; + u32 scr; + u32 ssr; + u32 sier; + u32 sder; + u8 reserved_7[4]; + u32 scfgr1; + u32 scfgr2; + u8 reserved_8[20]; + u32 samr; + u8 reserved_9[12]; + u32 sasr; + u32 star; + u8 reserved_10[8]; + u32 stdr; + u8 reserved_11[12]; + u32 srdr; +}; + +typedef enum lpi2c_status { + LPI2C_SUCESS = 0, + LPI2C_END_PACKET_ERR, + LPI2C_STOP_ERR, + LPI2C_NAK_ERR, + LPI2C_ARB_LOST_ERR, + LPI2C_FIFO_ERR, + LPI2C_PIN_LOW_TIMEOUT_ERR, + LPI2C_DATA_MATCH_ERR, + LPI2C_BUSY, + LPI2C_IDLE, + LPI2C_BIT_ERR, + LPI2C_NO_TRANS_PROG, + LPI2C_DMA_REQ_FAIL, +} lpi2c_status_t; + +/* ---------------------------------------------------------------------------- + -- LPI2C Register Masks + ---------------------------------------------------------------------------- */ + +/*! + * @addtogroup LPI2C_Register_Masks LPI2C Register Masks + * @{ + */ + +/*! @name VERID - Version ID Register */ +#define LPI2C_VERID_FEATURE_MASK (0xFFFFU) +#define LPI2C_VERID_FEATURE_SHIFT (0U) +#define LPI2C_VERID_FEATURE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_VERID_FEATURE_SHIFT)) & LPI2C_VERID_FEATURE_MASK) +#define LPI2C_VERID_MINOR_MASK (0xFF0000U) +#define LPI2C_VERID_MINOR_SHIFT (16U) +#define LPI2C_VERID_MINOR(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_VERID_MINOR_SHIFT)) & LPI2C_VERID_MINOR_MASK) +#define LPI2C_VERID_MAJOR_MASK (0xFF000000U) +#define LPI2C_VERID_MAJOR_SHIFT (24U) +#define LPI2C_VERID_MAJOR(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_VERID_MAJOR_SHIFT)) & LPI2C_VERID_MAJOR_MASK) + +/*! @name PARAM - Parameter Register */ +#define LPI2C_PARAM_MTXFIFO_MASK (0xFU) +#define LPI2C_PARAM_MTXFIFO_SHIFT (0U) +#define LPI2C_PARAM_MTXFIFO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_PARAM_MTXFIFO_SHIFT)) & LPI2C_PARAM_MTXFIFO_MASK) +#define LPI2C_PARAM_MRXFIFO_MASK (0xF00U) +#define LPI2C_PARAM_MRXFIFO_SHIFT (8U) +#define LPI2C_PARAM_MRXFIFO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_PARAM_MRXFIFO_SHIFT)) & LPI2C_PARAM_MRXFIFO_MASK) + +/*! @name MCR - Master Control Register */ +#define LPI2C_MCR_MEN_MASK (0x1U) +#define LPI2C_MCR_MEN_SHIFT (0U) +#define LPI2C_MCR_MEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_MEN_SHIFT)) & LPI2C_MCR_MEN_MASK) +#define LPI2C_MCR_RST_MASK (0x2U) +#define LPI2C_MCR_RST_SHIFT (1U) +#define LPI2C_MCR_RST(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_RST_SHIFT)) & LPI2C_MCR_RST_MASK) +#define LPI2C_MCR_DOZEN_MASK (0x4U) +#define LPI2C_MCR_DOZEN_SHIFT (2U) +#define LPI2C_MCR_DOZEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_DOZEN_SHIFT)) & LPI2C_MCR_DOZEN_MASK) +#define LPI2C_MCR_DBGEN_MASK (0x8U) +#define LPI2C_MCR_DBGEN_SHIFT (3U) +#define LPI2C_MCR_DBGEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_DBGEN_SHIFT)) & LPI2C_MCR_DBGEN_MASK) +#define LPI2C_MCR_RTF_MASK (0x100U) +#define LPI2C_MCR_RTF_SHIFT (8U) +#define LPI2C_MCR_RTF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_RTF_SHIFT)) & LPI2C_MCR_RTF_MASK) +#define LPI2C_MCR_RRF_MASK (0x200U) +#define LPI2C_MCR_RRF_SHIFT (9U) +#define LPI2C_MCR_RRF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCR_RRF_SHIFT)) & LPI2C_MCR_RRF_MASK) + +/*! @name MSR - Master Status Register */ +#define LPI2C_MSR_TDF_MASK (0x1U) +#define LPI2C_MSR_TDF_SHIFT (0U) +#define LPI2C_MSR_TDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_TDF_SHIFT)) & LPI2C_MSR_TDF_MASK) +#define LPI2C_MSR_RDF_MASK (0x2U) +#define LPI2C_MSR_RDF_SHIFT (1U) +#define LPI2C_MSR_RDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_RDF_SHIFT)) & LPI2C_MSR_RDF_MASK) +#define LPI2C_MSR_EPF_MASK (0x100U) +#define LPI2C_MSR_EPF_SHIFT (8U) +#define LPI2C_MSR_EPF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_EPF_SHIFT)) & LPI2C_MSR_EPF_MASK) +#define LPI2C_MSR_SDF_MASK (0x200U) +#define LPI2C_MSR_SDF_SHIFT (9U) +#define LPI2C_MSR_SDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_SDF_SHIFT)) & LPI2C_MSR_SDF_MASK) +#define LPI2C_MSR_NDF_MASK (0x400U) +#define LPI2C_MSR_NDF_SHIFT (10U) +#define LPI2C_MSR_NDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_NDF_SHIFT)) & LPI2C_MSR_NDF_MASK) +#define LPI2C_MSR_ALF_MASK (0x800U) +#define LPI2C_MSR_ALF_SHIFT (11U) +#define LPI2C_MSR_ALF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_ALF_SHIFT)) & LPI2C_MSR_ALF_MASK) +#define LPI2C_MSR_FEF_MASK (0x1000U) +#define LPI2C_MSR_FEF_SHIFT (12U) +#define LPI2C_MSR_FEF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_FEF_SHIFT)) & LPI2C_MSR_FEF_MASK) +#define LPI2C_MSR_PLTF_MASK (0x2000U) +#define LPI2C_MSR_PLTF_SHIFT (13U) +#define LPI2C_MSR_PLTF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_PLTF_SHIFT)) & LPI2C_MSR_PLTF_MASK) +#define LPI2C_MSR_DMF_MASK (0x4000U) +#define LPI2C_MSR_DMF_SHIFT (14U) +#define LPI2C_MSR_DMF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_DMF_SHIFT)) & LPI2C_MSR_DMF_MASK) +#define LPI2C_MSR_MBF_MASK (0x1000000U) +#define LPI2C_MSR_MBF_SHIFT (24U) +#define LPI2C_MSR_MBF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_MBF_SHIFT)) & LPI2C_MSR_MBF_MASK) +#define LPI2C_MSR_BBF_MASK (0x2000000U) +#define LPI2C_MSR_BBF_SHIFT (25U) +#define LPI2C_MSR_BBF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MSR_BBF_SHIFT)) & LPI2C_MSR_BBF_MASK) + +/*! @name MIER - Master Interrupt Enable Register */ +#define LPI2C_MIER_TDIE_MASK (0x1U) +#define LPI2C_MIER_TDIE_SHIFT (0U) +#define LPI2C_MIER_TDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_TDIE_SHIFT)) & LPI2C_MIER_TDIE_MASK) +#define LPI2C_MIER_RDIE_MASK (0x2U) +#define LPI2C_MIER_RDIE_SHIFT (1U) +#define LPI2C_MIER_RDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_RDIE_SHIFT)) & LPI2C_MIER_RDIE_MASK) +#define LPI2C_MIER_EPIE_MASK (0x100U) +#define LPI2C_MIER_EPIE_SHIFT (8U) +#define LPI2C_MIER_EPIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_EPIE_SHIFT)) & LPI2C_MIER_EPIE_MASK) +#define LPI2C_MIER_SDIE_MASK (0x200U) +#define LPI2C_MIER_SDIE_SHIFT (9U) +#define LPI2C_MIER_SDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_SDIE_SHIFT)) & LPI2C_MIER_SDIE_MASK) +#define LPI2C_MIER_NDIE_MASK (0x400U) +#define LPI2C_MIER_NDIE_SHIFT (10U) +#define LPI2C_MIER_NDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_NDIE_SHIFT)) & LPI2C_MIER_NDIE_MASK) +#define LPI2C_MIER_ALIE_MASK (0x800U) +#define LPI2C_MIER_ALIE_SHIFT (11U) +#define LPI2C_MIER_ALIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_ALIE_SHIFT)) & LPI2C_MIER_ALIE_MASK) +#define LPI2C_MIER_FEIE_MASK (0x1000U) +#define LPI2C_MIER_FEIE_SHIFT (12U) +#define LPI2C_MIER_FEIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_FEIE_SHIFT)) & LPI2C_MIER_FEIE_MASK) +#define LPI2C_MIER_PLTIE_MASK (0x2000U) +#define LPI2C_MIER_PLTIE_SHIFT (13U) +#define LPI2C_MIER_PLTIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_PLTIE_SHIFT)) & LPI2C_MIER_PLTIE_MASK) +#define LPI2C_MIER_DMIE_MASK (0x4000U) +#define LPI2C_MIER_DMIE_SHIFT (14U) +#define LPI2C_MIER_DMIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MIER_DMIE_SHIFT)) & LPI2C_MIER_DMIE_MASK) + +/*! @name MDER - Master DMA Enable Register */ +#define LPI2C_MDER_TDDE_MASK (0x1U) +#define LPI2C_MDER_TDDE_SHIFT (0U) +#define LPI2C_MDER_TDDE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MDER_TDDE_SHIFT)) & LPI2C_MDER_TDDE_MASK) +#define LPI2C_MDER_RDDE_MASK (0x2U) +#define LPI2C_MDER_RDDE_SHIFT (1U) +#define LPI2C_MDER_RDDE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MDER_RDDE_SHIFT)) & LPI2C_MDER_RDDE_MASK) + +/*! @name MCFGR0 - Master Configuration Register 0 */ +#define LPI2C_MCFGR0_HREN_MASK (0x1U) +#define LPI2C_MCFGR0_HREN_SHIFT (0U) +#define LPI2C_MCFGR0_HREN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR0_HREN_SHIFT)) & LPI2C_MCFGR0_HREN_MASK) +#define LPI2C_MCFGR0_HRPOL_MASK (0x2U) +#define LPI2C_MCFGR0_HRPOL_SHIFT (1U) +#define LPI2C_MCFGR0_HRPOL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR0_HRPOL_SHIFT)) & LPI2C_MCFGR0_HRPOL_MASK) +#define LPI2C_MCFGR0_HRSEL_MASK (0x4U) +#define LPI2C_MCFGR0_HRSEL_SHIFT (2U) +#define LPI2C_MCFGR0_HRSEL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR0_HRSEL_SHIFT)) & LPI2C_MCFGR0_HRSEL_MASK) +#define LPI2C_MCFGR0_CIRFIFO_MASK (0x100U) +#define LPI2C_MCFGR0_CIRFIFO_SHIFT (8U) +#define LPI2C_MCFGR0_CIRFIFO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR0_CIRFIFO_SHIFT)) & LPI2C_MCFGR0_CIRFIFO_MASK) +#define LPI2C_MCFGR0_RDMO_MASK (0x200U) +#define LPI2C_MCFGR0_RDMO_SHIFT (9U) +#define LPI2C_MCFGR0_RDMO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR0_RDMO_SHIFT)) & LPI2C_MCFGR0_RDMO_MASK) + +/*! @name MCFGR1 - Master Configuration Register 1 */ +#define LPI2C_MCFGR1_PRESCALE_MASK (0x7U) +#define LPI2C_MCFGR1_PRESCALE_SHIFT (0U) +#define LPI2C_MCFGR1_PRESCALE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_PRESCALE_SHIFT)) & LPI2C_MCFGR1_PRESCALE_MASK) +#define LPI2C_MCFGR1_AUTOSTOP_MASK (0x100U) +#define LPI2C_MCFGR1_AUTOSTOP_SHIFT (8U) +#define LPI2C_MCFGR1_AUTOSTOP(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_AUTOSTOP_SHIFT)) & LPI2C_MCFGR1_AUTOSTOP_MASK) +#define LPI2C_MCFGR1_IGNACK_MASK (0x200U) +#define LPI2C_MCFGR1_IGNACK_SHIFT (9U) +#define LPI2C_MCFGR1_IGNACK(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_IGNACK_SHIFT)) & LPI2C_MCFGR1_IGNACK_MASK) +#define LPI2C_MCFGR1_TIMECFG_MASK (0x400U) +#define LPI2C_MCFGR1_TIMECFG_SHIFT (10U) +#define LPI2C_MCFGR1_TIMECFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_TIMECFG_SHIFT)) & LPI2C_MCFGR1_TIMECFG_MASK) +#define LPI2C_MCFGR1_MATCFG_MASK (0x70000U) +#define LPI2C_MCFGR1_MATCFG_SHIFT (16U) +#define LPI2C_MCFGR1_MATCFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_MATCFG_SHIFT)) & LPI2C_MCFGR1_MATCFG_MASK) +#define LPI2C_MCFGR1_PINCFG_MASK (0x7000000U) +#define LPI2C_MCFGR1_PINCFG_SHIFT (24U) +#define LPI2C_MCFGR1_PINCFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR1_PINCFG_SHIFT)) & LPI2C_MCFGR1_PINCFG_MASK) + +/*! @name MCFGR2 - Master Configuration Register 2 */ +#define LPI2C_MCFGR2_BUSIDLE_MASK (0xFFFU) +#define LPI2C_MCFGR2_BUSIDLE_SHIFT (0U) +#define LPI2C_MCFGR2_BUSIDLE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR2_BUSIDLE_SHIFT)) & LPI2C_MCFGR2_BUSIDLE_MASK) +#define LPI2C_MCFGR2_FILTSCL_MASK (0xF0000U) +#define LPI2C_MCFGR2_FILTSCL_SHIFT (16U) +#define LPI2C_MCFGR2_FILTSCL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR2_FILTSCL_SHIFT)) & LPI2C_MCFGR2_FILTSCL_MASK) +#define LPI2C_MCFGR2_FILTSDA_MASK (0xF000000U) +#define LPI2C_MCFGR2_FILTSDA_SHIFT (24U) +#define LPI2C_MCFGR2_FILTSDA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR2_FILTSDA_SHIFT)) & LPI2C_MCFGR2_FILTSDA_MASK) + +/*! @name MCFGR3 - Master Configuration Register 3 */ +#define LPI2C_MCFGR3_PINLOW_MASK (0xFFF00U) +#define LPI2C_MCFGR3_PINLOW_SHIFT (8U) +#define LPI2C_MCFGR3_PINLOW(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCFGR3_PINLOW_SHIFT)) & LPI2C_MCFGR3_PINLOW_MASK) + +/*! @name MDMR - Master Data Match Register */ +#define LPI2C_MDMR_MATCH0_MASK (0xFFU) +#define LPI2C_MDMR_MATCH0_SHIFT (0U) +#define LPI2C_MDMR_MATCH0(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MDMR_MATCH0_SHIFT)) & LPI2C_MDMR_MATCH0_MASK) +#define LPI2C_MDMR_MATCH1_MASK (0xFF0000U) +#define LPI2C_MDMR_MATCH1_SHIFT (16U) +#define LPI2C_MDMR_MATCH1(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MDMR_MATCH1_SHIFT)) & LPI2C_MDMR_MATCH1_MASK) + +/*! @name MCCR0 - Master Clock Configuration Register 0 */ +#define LPI2C_MCCR0_CLKLO_MASK (0x3FU) +#define LPI2C_MCCR0_CLKLO_SHIFT (0U) +#define LPI2C_MCCR0_CLKLO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR0_CLKLO_SHIFT)) & LPI2C_MCCR0_CLKLO_MASK) +#define LPI2C_MCCR0_CLKHI_MASK (0x3F00U) +#define LPI2C_MCCR0_CLKHI_SHIFT (8U) +#define LPI2C_MCCR0_CLKHI(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR0_CLKHI_SHIFT)) & LPI2C_MCCR0_CLKHI_MASK) +#define LPI2C_MCCR0_SETHOLD_MASK (0x3F0000U) +#define LPI2C_MCCR0_SETHOLD_SHIFT (16U) +#define LPI2C_MCCR0_SETHOLD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR0_SETHOLD_SHIFT)) & LPI2C_MCCR0_SETHOLD_MASK) +#define LPI2C_MCCR0_DATAVD_MASK (0x3F000000U) +#define LPI2C_MCCR0_DATAVD_SHIFT (24U) +#define LPI2C_MCCR0_DATAVD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR0_DATAVD_SHIFT)) & LPI2C_MCCR0_DATAVD_MASK) + +/*! @name MCCR1 - Master Clock Configuration Register 1 */ +#define LPI2C_MCCR1_CLKLO_MASK (0x3FU) +#define LPI2C_MCCR1_CLKLO_SHIFT (0U) +#define LPI2C_MCCR1_CLKLO(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR1_CLKLO_SHIFT)) & LPI2C_MCCR1_CLKLO_MASK) +#define LPI2C_MCCR1_CLKHI_MASK (0x3F00U) +#define LPI2C_MCCR1_CLKHI_SHIFT (8U) +#define LPI2C_MCCR1_CLKHI(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR1_CLKHI_SHIFT)) & LPI2C_MCCR1_CLKHI_MASK) +#define LPI2C_MCCR1_SETHOLD_MASK (0x3F0000U) +#define LPI2C_MCCR1_SETHOLD_SHIFT (16U) +#define LPI2C_MCCR1_SETHOLD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR1_SETHOLD_SHIFT)) & LPI2C_MCCR1_SETHOLD_MASK) +#define LPI2C_MCCR1_DATAVD_MASK (0x3F000000U) +#define LPI2C_MCCR1_DATAVD_SHIFT (24U) +#define LPI2C_MCCR1_DATAVD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MCCR1_DATAVD_SHIFT)) & LPI2C_MCCR1_DATAVD_MASK) + +/*! @name MFCR - Master FIFO Control Register */ +#define LPI2C_MFCR_TXWATER_MASK (0xFFU) +#define LPI2C_MFCR_TXWATER_SHIFT (0U) +#define LPI2C_MFCR_TXWATER(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MFCR_TXWATER_SHIFT)) & LPI2C_MFCR_TXWATER_MASK) +#define LPI2C_MFCR_RXWATER_MASK (0xFF0000U) +#define LPI2C_MFCR_RXWATER_SHIFT (16U) +#define LPI2C_MFCR_RXWATER(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MFCR_RXWATER_SHIFT)) & LPI2C_MFCR_RXWATER_MASK) + +/*! @name MFSR - Master FIFO Status Register */ +#define LPI2C_MFSR_TXCOUNT_MASK (0xFFU) +#define LPI2C_MFSR_TXCOUNT_SHIFT (0U) +#define LPI2C_MFSR_TXCOUNT(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MFSR_TXCOUNT_SHIFT)) & LPI2C_MFSR_TXCOUNT_MASK) +#define LPI2C_MFSR_RXCOUNT_MASK (0xFF0000U) +#define LPI2C_MFSR_RXCOUNT_SHIFT (16U) +#define LPI2C_MFSR_RXCOUNT(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MFSR_RXCOUNT_SHIFT)) & LPI2C_MFSR_RXCOUNT_MASK) + +/*! @name MTDR - Master Transmit Data Register */ +#define LPI2C_MTDR_DATA_MASK (0xFFU) +#define LPI2C_MTDR_DATA_SHIFT (0U) +#define LPI2C_MTDR_DATA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MTDR_DATA_SHIFT)) & LPI2C_MTDR_DATA_MASK) +#define LPI2C_MTDR_CMD_MASK (0x700U) +#define LPI2C_MTDR_CMD_SHIFT (8U) +#define LPI2C_MTDR_CMD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MTDR_CMD_SHIFT)) & LPI2C_MTDR_CMD_MASK) + +/*! @name MRDR - Master Receive Data Register */ +#define LPI2C_MRDR_DATA_MASK (0xFFU) +#define LPI2C_MRDR_DATA_SHIFT (0U) +#define LPI2C_MRDR_DATA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MRDR_DATA_SHIFT)) & LPI2C_MRDR_DATA_MASK) +#define LPI2C_MRDR_RXEMPTY_MASK (0x4000U) +#define LPI2C_MRDR_RXEMPTY_SHIFT (14U) +#define LPI2C_MRDR_RXEMPTY(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_MRDR_RXEMPTY_SHIFT)) & LPI2C_MRDR_RXEMPTY_MASK) + +/*! @name SCR - Slave Control Register */ +#define LPI2C_SCR_SEN_MASK (0x1U) +#define LPI2C_SCR_SEN_SHIFT (0U) +#define LPI2C_SCR_SEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_SEN_SHIFT)) & LPI2C_SCR_SEN_MASK) +#define LPI2C_SCR_RST_MASK (0x2U) +#define LPI2C_SCR_RST_SHIFT (1U) +#define LPI2C_SCR_RST(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_RST_SHIFT)) & LPI2C_SCR_RST_MASK) +#define LPI2C_SCR_FILTEN_MASK (0x10U) +#define LPI2C_SCR_FILTEN_SHIFT (4U) +#define LPI2C_SCR_FILTEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_FILTEN_SHIFT)) & LPI2C_SCR_FILTEN_MASK) +#define LPI2C_SCR_FILTDZ_MASK (0x20U) +#define LPI2C_SCR_FILTDZ_SHIFT (5U) +#define LPI2C_SCR_FILTDZ(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_FILTDZ_SHIFT)) & LPI2C_SCR_FILTDZ_MASK) +#define LPI2C_SCR_RTF_MASK (0x100U) +#define LPI2C_SCR_RTF_SHIFT (8U) +#define LPI2C_SCR_RTF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_RTF_SHIFT)) & LPI2C_SCR_RTF_MASK) +#define LPI2C_SCR_RRF_MASK (0x200U) +#define LPI2C_SCR_RRF_SHIFT (9U) +#define LPI2C_SCR_RRF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCR_RRF_SHIFT)) & LPI2C_SCR_RRF_MASK) + +/*! @name SSR - Slave Status Register */ +#define LPI2C_SSR_TDF_MASK (0x1U) +#define LPI2C_SSR_TDF_SHIFT (0U) +#define LPI2C_SSR_TDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_TDF_SHIFT)) & LPI2C_SSR_TDF_MASK) +#define LPI2C_SSR_RDF_MASK (0x2U) +#define LPI2C_SSR_RDF_SHIFT (1U) +#define LPI2C_SSR_RDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_RDF_SHIFT)) & LPI2C_SSR_RDF_MASK) +#define LPI2C_SSR_AVF_MASK (0x4U) +#define LPI2C_SSR_AVF_SHIFT (2U) +#define LPI2C_SSR_AVF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_AVF_SHIFT)) & LPI2C_SSR_AVF_MASK) +#define LPI2C_SSR_TAF_MASK (0x8U) +#define LPI2C_SSR_TAF_SHIFT (3U) +#define LPI2C_SSR_TAF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_TAF_SHIFT)) & LPI2C_SSR_TAF_MASK) +#define LPI2C_SSR_RSF_MASK (0x100U) +#define LPI2C_SSR_RSF_SHIFT (8U) +#define LPI2C_SSR_RSF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_RSF_SHIFT)) & LPI2C_SSR_RSF_MASK) +#define LPI2C_SSR_SDF_MASK (0x200U) +#define LPI2C_SSR_SDF_SHIFT (9U) +#define LPI2C_SSR_SDF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_SDF_SHIFT)) & LPI2C_SSR_SDF_MASK) +#define LPI2C_SSR_BEF_MASK (0x400U) +#define LPI2C_SSR_BEF_SHIFT (10U) +#define LPI2C_SSR_BEF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_BEF_SHIFT)) & LPI2C_SSR_BEF_MASK) +#define LPI2C_SSR_FEF_MASK (0x800U) +#define LPI2C_SSR_FEF_SHIFT (11U) +#define LPI2C_SSR_FEF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_FEF_SHIFT)) & LPI2C_SSR_FEF_MASK) +#define LPI2C_SSR_AM0F_MASK (0x1000U) +#define LPI2C_SSR_AM0F_SHIFT (12U) +#define LPI2C_SSR_AM0F(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_AM0F_SHIFT)) & LPI2C_SSR_AM0F_MASK) +#define LPI2C_SSR_AM1F_MASK (0x2000U) +#define LPI2C_SSR_AM1F_SHIFT (13U) +#define LPI2C_SSR_AM1F(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_AM1F_SHIFT)) & LPI2C_SSR_AM1F_MASK) +#define LPI2C_SSR_GCF_MASK (0x4000U) +#define LPI2C_SSR_GCF_SHIFT (14U) +#define LPI2C_SSR_GCF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_GCF_SHIFT)) & LPI2C_SSR_GCF_MASK) +#define LPI2C_SSR_SARF_MASK (0x8000U) +#define LPI2C_SSR_SARF_SHIFT (15U) +#define LPI2C_SSR_SARF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_SARF_SHIFT)) & LPI2C_SSR_SARF_MASK) +#define LPI2C_SSR_SBF_MASK (0x1000000U) +#define LPI2C_SSR_SBF_SHIFT (24U) +#define LPI2C_SSR_SBF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_SBF_SHIFT)) & LPI2C_SSR_SBF_MASK) +#define LPI2C_SSR_BBF_MASK (0x2000000U) +#define LPI2C_SSR_BBF_SHIFT (25U) +#define LPI2C_SSR_BBF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SSR_BBF_SHIFT)) & LPI2C_SSR_BBF_MASK) + +/*! @name SIER - Slave Interrupt Enable Register */ +#define LPI2C_SIER_TDIE_MASK (0x1U) +#define LPI2C_SIER_TDIE_SHIFT (0U) +#define LPI2C_SIER_TDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_TDIE_SHIFT)) & LPI2C_SIER_TDIE_MASK) +#define LPI2C_SIER_RDIE_MASK (0x2U) +#define LPI2C_SIER_RDIE_SHIFT (1U) +#define LPI2C_SIER_RDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_RDIE_SHIFT)) & LPI2C_SIER_RDIE_MASK) +#define LPI2C_SIER_AVIE_MASK (0x4U) +#define LPI2C_SIER_AVIE_SHIFT (2U) +#define LPI2C_SIER_AVIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_AVIE_SHIFT)) & LPI2C_SIER_AVIE_MASK) +#define LPI2C_SIER_TAIE_MASK (0x8U) +#define LPI2C_SIER_TAIE_SHIFT (3U) +#define LPI2C_SIER_TAIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_TAIE_SHIFT)) & LPI2C_SIER_TAIE_MASK) +#define LPI2C_SIER_RSIE_MASK (0x100U) +#define LPI2C_SIER_RSIE_SHIFT (8U) +#define LPI2C_SIER_RSIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_RSIE_SHIFT)) & LPI2C_SIER_RSIE_MASK) +#define LPI2C_SIER_SDIE_MASK (0x200U) +#define LPI2C_SIER_SDIE_SHIFT (9U) +#define LPI2C_SIER_SDIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_SDIE_SHIFT)) & LPI2C_SIER_SDIE_MASK) +#define LPI2C_SIER_BEIE_MASK (0x400U) +#define LPI2C_SIER_BEIE_SHIFT (10U) +#define LPI2C_SIER_BEIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_BEIE_SHIFT)) & LPI2C_SIER_BEIE_MASK) +#define LPI2C_SIER_FEIE_MASK (0x800U) +#define LPI2C_SIER_FEIE_SHIFT (11U) +#define LPI2C_SIER_FEIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_FEIE_SHIFT)) & LPI2C_SIER_FEIE_MASK) +#define LPI2C_SIER_AM0IE_MASK (0x1000U) +#define LPI2C_SIER_AM0IE_SHIFT (12U) +#define LPI2C_SIER_AM0IE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_AM0IE_SHIFT)) & LPI2C_SIER_AM0IE_MASK) +#define LPI2C_SIER_AM1F_MASK (0x2000U) +#define LPI2C_SIER_AM1F_SHIFT (13U) +#define LPI2C_SIER_AM1F(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_AM1F_SHIFT)) & LPI2C_SIER_AM1F_MASK) +#define LPI2C_SIER_GCIE_MASK (0x4000U) +#define LPI2C_SIER_GCIE_SHIFT (14U) +#define LPI2C_SIER_GCIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_GCIE_SHIFT)) & LPI2C_SIER_GCIE_MASK) +#define LPI2C_SIER_SARIE_MASK (0x8000U) +#define LPI2C_SIER_SARIE_SHIFT (15U) +#define LPI2C_SIER_SARIE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SIER_SARIE_SHIFT)) & LPI2C_SIER_SARIE_MASK) + +/*! @name SDER - Slave DMA Enable Register */ +#define LPI2C_SDER_TDDE_MASK (0x1U) +#define LPI2C_SDER_TDDE_SHIFT (0U) +#define LPI2C_SDER_TDDE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SDER_TDDE_SHIFT)) & LPI2C_SDER_TDDE_MASK) +#define LPI2C_SDER_RDDE_MASK (0x2U) +#define LPI2C_SDER_RDDE_SHIFT (1U) +#define LPI2C_SDER_RDDE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SDER_RDDE_SHIFT)) & LPI2C_SDER_RDDE_MASK) +#define LPI2C_SDER_AVDE_MASK (0x4U) +#define LPI2C_SDER_AVDE_SHIFT (2U) +#define LPI2C_SDER_AVDE(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SDER_AVDE_SHIFT)) & LPI2C_SDER_AVDE_MASK) + +/*! @name SCFGR1 - Slave Configuration Register 1 */ +#define LPI2C_SCFGR1_ADRSTALL_MASK (0x1U) +#define LPI2C_SCFGR1_ADRSTALL_SHIFT (0U) +#define LPI2C_SCFGR1_ADRSTALL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_ADRSTALL_SHIFT)) & LPI2C_SCFGR1_ADRSTALL_MASK) +#define LPI2C_SCFGR1_RXSTALL_MASK (0x2U) +#define LPI2C_SCFGR1_RXSTALL_SHIFT (1U) +#define LPI2C_SCFGR1_RXSTALL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_RXSTALL_SHIFT)) & LPI2C_SCFGR1_RXSTALL_MASK) +#define LPI2C_SCFGR1_TXDSTALL_MASK (0x4U) +#define LPI2C_SCFGR1_TXDSTALL_SHIFT (2U) +#define LPI2C_SCFGR1_TXDSTALL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_TXDSTALL_SHIFT)) & LPI2C_SCFGR1_TXDSTALL_MASK) +#define LPI2C_SCFGR1_ACKSTALL_MASK (0x8U) +#define LPI2C_SCFGR1_ACKSTALL_SHIFT (3U) +#define LPI2C_SCFGR1_ACKSTALL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_ACKSTALL_SHIFT)) & LPI2C_SCFGR1_ACKSTALL_MASK) +#define LPI2C_SCFGR1_GCEN_MASK (0x100U) +#define LPI2C_SCFGR1_GCEN_SHIFT (8U) +#define LPI2C_SCFGR1_GCEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_GCEN_SHIFT)) & LPI2C_SCFGR1_GCEN_MASK) +#define LPI2C_SCFGR1_SAEN_MASK (0x200U) +#define LPI2C_SCFGR1_SAEN_SHIFT (9U) +#define LPI2C_SCFGR1_SAEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_SAEN_SHIFT)) & LPI2C_SCFGR1_SAEN_MASK) +#define LPI2C_SCFGR1_TXCFG_MASK (0x400U) +#define LPI2C_SCFGR1_TXCFG_SHIFT (10U) +#define LPI2C_SCFGR1_TXCFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_TXCFG_SHIFT)) & LPI2C_SCFGR1_TXCFG_MASK) +#define LPI2C_SCFGR1_RXCFG_MASK (0x800U) +#define LPI2C_SCFGR1_RXCFG_SHIFT (11U) +#define LPI2C_SCFGR1_RXCFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_RXCFG_SHIFT)) & LPI2C_SCFGR1_RXCFG_MASK) +#define LPI2C_SCFGR1_IGNACK_MASK (0x1000U) +#define LPI2C_SCFGR1_IGNACK_SHIFT (12U) +#define LPI2C_SCFGR1_IGNACK(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_IGNACK_SHIFT)) & LPI2C_SCFGR1_IGNACK_MASK) +#define LPI2C_SCFGR1_HSMEN_MASK (0x2000U) +#define LPI2C_SCFGR1_HSMEN_SHIFT (13U) +#define LPI2C_SCFGR1_HSMEN(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_HSMEN_SHIFT)) & LPI2C_SCFGR1_HSMEN_MASK) +#define LPI2C_SCFGR1_ADDRCFG_MASK (0x70000U) +#define LPI2C_SCFGR1_ADDRCFG_SHIFT (16U) +#define LPI2C_SCFGR1_ADDRCFG(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR1_ADDRCFG_SHIFT)) & LPI2C_SCFGR1_ADDRCFG_MASK) + +/*! @name SCFGR2 - Slave Configuration Register 2 */ +#define LPI2C_SCFGR2_CLKHOLD_MASK (0xFU) +#define LPI2C_SCFGR2_CLKHOLD_SHIFT (0U) +#define LPI2C_SCFGR2_CLKHOLD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR2_CLKHOLD_SHIFT)) & LPI2C_SCFGR2_CLKHOLD_MASK) +#define LPI2C_SCFGR2_DATAVD_MASK (0x3F00U) +#define LPI2C_SCFGR2_DATAVD_SHIFT (8U) +#define LPI2C_SCFGR2_DATAVD(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR2_DATAVD_SHIFT)) & LPI2C_SCFGR2_DATAVD_MASK) +#define LPI2C_SCFGR2_FILTSCL_MASK (0xF0000U) +#define LPI2C_SCFGR2_FILTSCL_SHIFT (16U) +#define LPI2C_SCFGR2_FILTSCL(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR2_FILTSCL_SHIFT)) & LPI2C_SCFGR2_FILTSCL_MASK) +#define LPI2C_SCFGR2_FILTSDA_MASK (0xF000000U) +#define LPI2C_SCFGR2_FILTSDA_SHIFT (24U) +#define LPI2C_SCFGR2_FILTSDA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SCFGR2_FILTSDA_SHIFT)) & LPI2C_SCFGR2_FILTSDA_MASK) + +/*! @name SAMR - Slave Address Match Register */ +#define LPI2C_SAMR_ADDR0_MASK (0x7FEU) +#define LPI2C_SAMR_ADDR0_SHIFT (1U) +#define LPI2C_SAMR_ADDR0(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SAMR_ADDR0_SHIFT)) & LPI2C_SAMR_ADDR0_MASK) +#define LPI2C_SAMR_ADDR1_MASK (0x7FE0000U) +#define LPI2C_SAMR_ADDR1_SHIFT (17U) +#define LPI2C_SAMR_ADDR1(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SAMR_ADDR1_SHIFT)) & LPI2C_SAMR_ADDR1_MASK) + +/*! @name SASR - Slave Address Status Register */ +#define LPI2C_SASR_RADDR_MASK (0x7FFU) +#define LPI2C_SASR_RADDR_SHIFT (0U) +#define LPI2C_SASR_RADDR(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SASR_RADDR_SHIFT)) & LPI2C_SASR_RADDR_MASK) +#define LPI2C_SASR_ANV_MASK (0x4000U) +#define LPI2C_SASR_ANV_SHIFT (14U) +#define LPI2C_SASR_ANV(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SASR_ANV_SHIFT)) & LPI2C_SASR_ANV_MASK) + +/*! @name STAR - Slave Transmit ACK Register */ +#define LPI2C_STAR_TXNACK_MASK (0x1U) +#define LPI2C_STAR_TXNACK_SHIFT (0U) +#define LPI2C_STAR_TXNACK(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_STAR_TXNACK_SHIFT)) & LPI2C_STAR_TXNACK_MASK) + +/*! @name STDR - Slave Transmit Data Register */ +#define LPI2C_STDR_DATA_MASK (0xFFU) +#define LPI2C_STDR_DATA_SHIFT (0U) +#define LPI2C_STDR_DATA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_STDR_DATA_SHIFT)) & LPI2C_STDR_DATA_MASK) + +/*! @name SRDR - Slave Receive Data Register */ +#define LPI2C_SRDR_DATA_MASK (0xFFU) +#define LPI2C_SRDR_DATA_SHIFT (0U) +#define LPI2C_SRDR_DATA(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SRDR_DATA_SHIFT)) & LPI2C_SRDR_DATA_MASK) +#define LPI2C_SRDR_RXEMPTY_MASK (0x4000U) +#define LPI2C_SRDR_RXEMPTY_SHIFT (14U) +#define LPI2C_SRDR_RXEMPTY(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SRDR_RXEMPTY_SHIFT)) & LPI2C_SRDR_RXEMPTY_MASK) +#define LPI2C_SRDR_SOF_MASK (0x8000U) +#define LPI2C_SRDR_SOF_SHIFT (15U) +#define LPI2C_SRDR_SOF(x) (((uint32_t)(((uint32_t)(x)) << LPI2C_SRDR_SOF_SHIFT)) & LPI2C_SRDR_SOF_MASK) + +#endif /* __ASM_ARCH_IMX_I2C_H__ */ diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 051f911..027a83a 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -109,6 +109,12 @@ config SYS_I2C_INTEL the I2C API meaning that any I2C operations will immediately fail for now.
+config SYS_LPI2C_IMX + bool "NXP i.MX LPI2C driver" + depends on ARCH_MX7ULP + help + Add support for the NXP i.MX LPI2C driver. + config SYS_I2C_MXC bool "NXP i.MX I2C driver" depends on MX6 diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 7c86198..2cbe3bc 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o obj-$(CONFIG_SYS_I2C_FTI2C010) += fti2c010.o obj-$(CONFIG_SYS_I2C_IHS) += ihs_i2c.o obj-$(CONFIG_SYS_I2C_INTEL) += intel_i2c.o +obj-$(CONFIG_SYS_LPI2C_IMX) += imx_lpi2c.o obj-$(CONFIG_SYS_I2C_KONA) += kona_i2c.o obj-$(CONFIG_SYS_I2C_LPC32XX) += lpc32xx_i2c.o obj-$(CONFIG_SYS_I2C_MVTWSI) += mvtwsi.o diff --git a/drivers/i2c/imx_lpi2c.c b/drivers/i2c/imx_lpi2c.c new file mode 100644 index 0000000..f792d44 --- /dev/null +++ b/drivers/i2c/imx_lpi2c.c @@ -0,0 +1,462 @@ +/* + * Copyright 2016 Freescale Semiconductors, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/imx_lpi2c.h> +#include <asm/arch/sys_proto.h> +#include <dm.h> +#include <fdtdec.h> +#include <i2c.h> + +DECLARE_GLOBAL_DATA_PTR; +#define LPI2C_FIFO_SIZE 4 +#define LPI2C_TIMEOUT_MS 100 + +/* Weak linked function for overridden by some SoC power function */ +int __weak init_i2c_power(unsigned i2c_num) +{ + return 0; +} + +static int imx_lpci2c_check_busy_bus(struct udevice *bus) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 status; + + status = readl(®s->msr); + + if ((status & LPI2C_MSR_BBF_MASK) && !(status & LPI2C_MSR_MBF_MASK)) + result = LPI2C_BUSY; + + return result; +} + +static int imx_lpci2c_check_clear_error(struct udevice *bus) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 val, status; + + status = readl(®s->msr); + /* errors to check for */ + status &= LPI2C_MSR_NDF_MASK | LPI2C_MSR_ALF_MASK | + LPI2C_MSR_FEF_MASK | LPI2C_MSR_PLTF_MASK; + + if (status) { + if (status & LPI2C_MSR_PLTF_MASK) + result = LPI2C_PIN_LOW_TIMEOUT_ERR; + else if (status & LPI2C_MSR_ALF_MASK) + result = LPI2C_ARB_LOST_ERR; + else if (status & LPI2C_MSR_NDF_MASK) + result = LPI2C_NAK_ERR; + else if (status & LPI2C_MSR_FEF_MASK) + result = LPI2C_FIFO_ERR; + + /* clear status flags */ + writel(0x7f00, ®s->msr); + /* reset fifos */ + val = readl(®s->mcr); + val |= LPI2C_MCR_RRF_MASK | LPI2C_MCR_RTF_MASK; + writel(val, ®s->mcr); + } + + return result; +} + +static int bus_i2c_wait_for_tx_ready(struct udevice *bus) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 txcount = 0; + ulong start_time = get_timer(0); + + do { + txcount = LPI2C_MFSR_TXCOUNT(readl(®s->mfsr)); + txcount = LPI2C_FIFO_SIZE - txcount; + result = imx_lpci2c_check_clear_error(bus); + if (result) { + debug("i2c: wait for tx ready: result 0x%x\n", result); + return result; + } + if (get_timer(start_time) > LPI2C_TIMEOUT_MS) { + debug("i2c: wait for tx ready: timeout\n"); + return -1; + } + } while (!txcount); + + return result; +} + +static int bus_i2c_send(struct udevice *bus, u8 *txbuf, int len) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + + /* empty tx */ + if (!len) + return result; + + while (len--) { + result = bus_i2c_wait_for_tx_ready(bus); + if (result) { + debug("i2c: send wait fot tx ready: %d\n", result); + return result; + } + writel(*txbuf++, ®s->mtdr); + } + + return result; +} + +static int bus_i2c_receive(struct udevice *bus, u8 *rxbuf, int len) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 val; + ulong start_time = get_timer(0); + + /* empty read */ + if (!len) + return result; + + result = bus_i2c_wait_for_tx_ready(bus); + if (result) { + debug("i2c: receive wait fot tx ready: %d\n", result); + return result; + } + + /* clear all status flags */ + writel(0x7f00, ®s->msr); + /* send receive command */ + val = LPI2C_MTDR_CMD(0x1) | LPI2C_MTDR_DATA(len - 1); + writel(val, ®s->mtdr); + + while (len--) { + do { + result = imx_lpci2c_check_clear_error(bus); + if (result) { + debug("i2c: receive check clear error: %d\n", result); + return result; + } + if (get_timer(start_time) > LPI2C_TIMEOUT_MS) { + debug("i2c: receive mrdr: timeout\n"); + return -1; + } + val = readl(®s->mrdr); + } while (val & LPI2C_MRDR_RXEMPTY_MASK); + *rxbuf++ = LPI2C_MRDR_DATA(val); + } + + return result; +} + +static int bus_i2c_start(struct udevice *bus, u8 addr, u8 dir) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 val; + + result = imx_lpci2c_check_busy_bus(bus); + if (result) { + debug("i2c: start check busy bus: 0x%x\n", result); + return result; + } + /* clear all status flags */ + writel(0x7f00, ®s->msr); + /* turn off auto-stop condition */ + val = readl(®s->mcfgr1) & ~LPI2C_MCFGR1_AUTOSTOP_MASK; + writel(val, ®s->mcfgr1); + /* wait tx fifo ready */ + result = bus_i2c_wait_for_tx_ready(bus); + if (result) { + debug("i2c: start wait for tx ready: 0x%x\n", result); + return result; + } + /* issue start command */ + val = LPI2C_MTDR_CMD(0x4) | (addr << 0x1) | dir; + writel(val, ®s->mtdr); + + return result; +} +static int bus_i2c_stop(struct udevice *bus) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + lpi2c_status_t result = LPI2C_SUCESS; + u32 status; + + result = bus_i2c_wait_for_tx_ready(bus); + if (result) { + debug("i2c: stop wait for tx ready: 0x%x\n", result); + return result; + } + + /* send stop command */ + writel(LPI2C_MTDR_CMD(0x2), ®s->mtdr); + + while (result == LPI2C_SUCESS) { + status = readl(®s->msr); + result = imx_lpci2c_check_clear_error(bus); + /* stop detect flag */ + if (status & LPI2C_MSR_SDF_MASK) { + /* clear stop flag */ + status &= LPI2C_MSR_SDF_MASK; + writel(status, ®s->msr); + break; + } + } + + return result; +} + +static int bus_i2c_read(struct udevice *bus, u32 chip, u8 *buf, int len) +{ + lpi2c_status_t result = LPI2C_SUCESS; + + result = bus_i2c_start(bus, chip, 1); + if (result) + return result; + result = bus_i2c_receive(bus, buf, len); + if (result) + return result; + result = bus_i2c_stop(bus); + if (result) + return result; + + return result; +} + +static int bus_i2c_write(struct udevice *bus, u32 chip, u8 *buf, int len) +{ + lpi2c_status_t result = LPI2C_SUCESS; + + result = bus_i2c_start(bus, chip, 0); + if (result) + return result; + result = bus_i2c_send(bus, buf, len); + if (result) + return result; + result = bus_i2c_stop(bus); + if (result) + return result; + + return result; +} + + +static int bus_i2c_set_bus_speed(struct udevice *bus, int speed) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + u32 val; + u32 preescale = 0, best_pre = 0, clkhi = 0; + u32 best_clkhi = 0, abs_error = 0, rate; + u32 error = 0xffffffff; + u32 clock_rate; + bool mode; + int i; + + clock_rate = imx_get_i2cclk(bus->seq + 4); + if (!clock_rate) + return -EPERM; + + mode = (readl(®s->mcr) & LPI2C_MCR_MEN_MASK) >> LPI2C_MCR_MEN_SHIFT; + /* disable master mode */ + val = readl(®s->mcr) & ~LPI2C_MCR_MEN_MASK; + writel(val | LPI2C_MCR_MEN(0), ®s->mcr); + + for (preescale = 1; (preescale <= 128) && + (error != 0); preescale = 2 * preescale) { + for (clkhi = 1; clkhi < 32; clkhi++) { + if (clkhi == 1) + rate = (clock_rate / preescale) / (1 + 3 + 2 + 2 / preescale); + else + rate = (clock_rate / preescale / (3 * clkhi + 2 + 2 / preescale)); + + abs_error = speed > rate ? speed - rate : rate - speed; + + if (abs_error < error) { + best_pre = preescale; + best_clkhi = clkhi; + error = abs_error; + if (abs_error == 0) + break; + } + } + } + + /* Standard, fast, fast mode plus and ultra-fast transfers. */ + val = LPI2C_MCCR0_CLKHI(best_clkhi); + if (best_clkhi < 2) + val |= LPI2C_MCCR0_CLKLO(3) | LPI2C_MCCR0_SETHOLD(2) | LPI2C_MCCR0_DATAVD(1); + else + val |= LPI2C_MCCR0_CLKLO(2 * best_clkhi) | LPI2C_MCCR0_SETHOLD(best_clkhi) | + LPI2C_MCCR0_DATAVD(best_clkhi / 2); + writel(val, ®s->mccr0); + + for (i = 0; i < 8; i++) { + if (best_pre == (1 << i)) { + best_pre = i; + break; + } + } + + val = readl(®s->mcfgr1) & ~LPI2C_MCFGR1_PRESCALE_MASK; + writel(val | LPI2C_MCFGR1_PRESCALE(best_pre), ®s->mcfgr1); + + if (mode) { + val = readl(®s->mcr) & ~LPI2C_MCR_MEN_MASK; + writel(val | LPI2C_MCR_MEN(1), ®s->mcr); + } + + return 0; +} + +static int bus_i2c_init(struct udevice *bus, int speed) +{ + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)dev_get_addr(bus); + u32 val; + int ret; + + /* reset peripheral */ + writel(LPI2C_MCR_RST_MASK, ®s->mcr); + writel(0x0, ®s->mcr); + /* Disable Dozen mode */ + writel(LPI2C_MCR_DBGEN(0) | LPI2C_MCR_DOZEN(1), ®s->mcr); + /* host request disable, active high, external pin */ + val = readl(®s->mcfgr0); + val &= (~(LPI2C_MCFGR0_HREN_MASK | LPI2C_MCFGR0_HRPOL_MASK | + LPI2C_MCFGR0_HRSEL_MASK)); + val |= LPI2C_MCFGR0_HRPOL(0x1); + writel(val, ®s->mcfgr0); + /* pincfg and ignore ack */ + val = readl(®s->mcfgr1); + val &= ~(LPI2C_MCFGR1_PINCFG_MASK | LPI2C_MCFGR1_IGNACK_MASK); + val |= LPI2C_MCFGR1_PINCFG(0x0); /* 2 pin open drain */ + val |= LPI2C_MCFGR1_IGNACK(0x0); /* ignore nack */ + writel(val, ®s->mcfgr1); + + ret = bus_i2c_set_bus_speed(bus, speed); + + /* enable lpi2c in master mode */ + val = readl(®s->mcr) & ~LPI2C_MCR_MEN_MASK; + writel(val | LPI2C_MCR_MEN(1), ®s->mcr); + + debug("i2c : controller bus %d, speed %d:\n", bus->seq, speed); + + return ret; +} + +static int imx_lpi2c_probe_chip(struct udevice *bus, u32 chip, + u32 chip_flags) +{ + lpi2c_status_t result = LPI2C_SUCESS; + + result = bus_i2c_start(bus, chip, 0); + if (result) { + bus_i2c_stop(bus); + bus_i2c_init(bus, 100000); + return result; + } + + result = bus_i2c_stop(bus); + if (result) { + bus_i2c_init(bus, 100000); + return -result; + } + + return result; +} + +static int imx_lpi2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs) +{ + int ret = 0; + + for (; nmsgs > 0; nmsgs--, msg++) { + debug("i2c_xfer: chip=0x%x, len=0x%x\n", msg->addr, msg->len); + if (msg->flags & I2C_M_RD) + ret = bus_i2c_read(bus, msg->addr, msg->buf, + msg->len); + else { + ret = bus_i2c_write(bus, msg->addr, msg->buf, + msg->len); + if (ret) + break; + } + } + + if (ret) + debug("i2c_write: error sending\n"); + + return ret; +} + +static int imx_lpi2c_set_bus_speed(struct udevice *bus, unsigned int speed) +{ + return bus_i2c_set_bus_speed(bus, speed); +} + +static int imx_lpi2c_probe(struct udevice *bus) +{ + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + fdt_addr_t addr; + int ret; + + i2c_bus->driver_data = dev_get_driver_data(bus); + + addr = dev_get_addr(bus); + if (addr == FDT_ADDR_T_NONE) + return -ENODEV; + + i2c_bus->base = addr; + i2c_bus->index = bus->seq; + i2c_bus->bus = bus; + + /* power up i2c resource */ + ret = init_i2c_power(bus->seq + 4); + if (ret) { + debug("init_i2c_power err = %d\n", ret); + return ret; + } + + /* Enable clk, only i2c4-7 can be handled by A7 core */ + ret = enable_i2c_clk(1, bus->seq + 4); + if (ret < 0) + return ret; + + ret = bus_i2c_init(bus, 100000); + if (ret < 0) + return ret; + + debug("i2c : controller bus %d at %lu , speed %d: ", + bus->seq, i2c_bus->base, + i2c_bus->speed); + + return 0; +} + +static const struct dm_i2c_ops imx_lpi2c_ops = { + .xfer = imx_lpi2c_xfer, + .probe_chip = imx_lpi2c_probe_chip, + .set_bus_speed = imx_lpi2c_set_bus_speed, +}; + +static const struct udevice_id imx_lpi2c_ids[] = { + { .compatible = "fsl,imx7ulp-lpi2c", }, + {} +}; + +U_BOOT_DRIVER(imx_lpi2c) = { + .name = "imx_lpi2c", + .id = UCLASS_I2C, + .of_match = imx_lpi2c_ids, + .probe = imx_lpi2c_probe, + .priv_auto_alloc_size = sizeof(struct imx_lpi2c_bus), + .ops = &imx_lpi2c_ops, +};