From: Dirk Eibach dirk.eibach@gdsys.cc
IHS I2C master support was merely a hack in the osd driver. Now it is a proper u-boot I2C framework driver, supporting the v2.00 master features.
Signed-off-by: Dirk Eibach dirk.eibach@gdsys.cc ---
board/gdsys/common/Makefile | 4 +- board/gdsys/common/ihs_i2c.c | 196 +++++++++++++++++++++++++++++++++++++++++ board/gdsys/common/osd.c | 1 - include/configs/dlvision-10g.h | 20 ++++- include/configs/iocon.h | 22 +++-- include/gdsys_fpga.h | 25 +++--- 6 files changed, 245 insertions(+), 23 deletions(-) create mode 100644 board/gdsys/common/ihs_i2c.c
diff --git a/board/gdsys/common/Makefile b/board/gdsys/common/Makefile index 7f8b427..a5ee016 100644 --- a/board/gdsys/common/Makefile +++ b/board/gdsys/common/Makefile @@ -8,6 +8,6 @@ obj-$(CONFIG_SYS_FPGA_COMMON) += fpga.o obj-$(CONFIG_IO) += miiphybb.o obj-$(CONFIG_IO64) += miiphybb.o -obj-$(CONFIG_IOCON) += osd.o mclink.o dp501.o -obj-$(CONFIG_DLVISION_10G) += osd.o +obj-$(CONFIG_IOCON) += osd.o mclink.o dp501.o ihs_i2c.o +obj-$(CONFIG_DLVISION_10G) += osd.o ihs_i2c.o obj-$(CONFIG_CONTROLCENTERD) += dp501.o diff --git a/board/gdsys/common/ihs_i2c.c b/board/gdsys/common/ihs_i2c.c new file mode 100644 index 0000000..ba2f5dc --- /dev/null +++ b/board/gdsys/common/ihs_i2c.c @@ -0,0 +1,196 @@ +/* + * (C) Copyright 2013 + * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <i2c.h> +#include <gdsys_fpga.h> + +DECLARE_GLOBAL_DATA_PTR; + +enum { + I2CINT_ERROR_EV = 1 << 13, + I2CINT_TRANSMIT_EV = 1 << 14, + I2CINT_RECEIVE_EV = 1 << 15, +}; + +static int wait_for_int(bool read) +{ + u16 val; + unsigned int ctr = 0; + + FPGA_GET_REG(I2C_ADAP_HWNR, i2c.interrupt_status, &val); + while (!(val & (I2CINT_ERROR_EV + | (read ? I2CINT_RECEIVE_EV : I2CINT_TRANSMIT_EV)))) { + udelay(10); + if (ctr++ > 5000) { + printf("I2C timeout\n"); + return 1; + } + FPGA_GET_REG(I2C_ADAP_HWNR, i2c.interrupt_status, &val); + } + + return (val & I2CINT_ERROR_EV) ? 1 : 0; +} + +static int ihs_i2c_transfer(uchar chip, uchar *buffer, int len, bool read, + bool is_last) +{ + u16 val; + + FPGA_SET_REG(I2C_ADAP_HWNR, i2c.interrupt_status, I2CINT_ERROR_EV + | I2CINT_RECEIVE_EV | I2CINT_TRANSMIT_EV); + FPGA_GET_REG(I2C_ADAP_HWNR, i2c.interrupt_status, &val); + + if (!read && len) { + val = buffer[0]; + + if (len > 1) + val |= buffer[1] << 8; + FPGA_SET_REG(I2C_ADAP_HWNR, i2c.write_mailbox_ext, val); + } + + FPGA_SET_REG(I2C_ADAP_HWNR, i2c.write_mailbox, + (read ? 0x8000 : 0x8400) + | (chip << 1) + | ((len > 1) ? (1 << 11) : 0) + | (is_last ? 0 : (1 << 13))); + + if (wait_for_int(read)) + return 1; + + if (read) { + FPGA_GET_REG(I2C_ADAP_HWNR, i2c.read_mailbox_ext, &val); + buffer[0] = val & 0xff; + if (len > 1) + buffer[1] = val >> 8; + } + + return 0; +} + +static int ihs_i2c_address(uchar chip, uint addr, int alen, bool hold_bus) +{ + int shift = (alen-1) * 8; + + while (alen) { + int transfer = MIN(alen, 2); + uchar buf[2]; + bool is_last = alen <= transfer; + + buf[0] = addr >> shift; + if (alen > 1) + buf[1] = addr >> (shift - 8); + + if (ihs_i2c_transfer(chip, buf, transfer, false, + hold_bus ? false : is_last)) + return 1; + + shift -= 16; + alen -= transfer; + } + + return 0; +} + +static int ihs_i2c_access(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *buffer, int len, bool read) +{ + if (len <= 0) + return 1; + + if (ihs_i2c_address(chip, addr, alen, !read)) + return 1; + + while (len) { + int transfer = MIN(len, 2); + + if (ihs_i2c_transfer(chip, buffer, transfer, read, + len <= transfer)) + return 1; + + buffer += transfer; + addr += transfer; + len -= transfer; + } + + return 0; +} + + +static void ihs_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr) +{ +#ifdef CONFIG_SYS_I2C_INIT_BOARD + /* + * Call board specific i2c bus reset routine before accessing the + * environment, which might be in a chip on that bus. For details + * about this problem see doc/I2C_Edge_Conditions. + */ + i2c_init_board(); +#endif +} + +static int ihs_i2c_probe(struct i2c_adapter *adap, uchar chip) +{ + uchar buffer[2]; + + if (ihs_i2c_transfer(chip, buffer, 0, true, true)) + return 1; + + return 0; +} + +static int ihs_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *buffer, int len) +{ + return ihs_i2c_access(adap, chip, addr, alen, buffer, len, true); +} + +static int ihs_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *buffer, int len) +{ + return ihs_i2c_access(adap, chip, addr, alen, buffer, len, false); +} + +static unsigned int ihs_i2c_set_bus_speed(struct i2c_adapter *adap, + unsigned int speed) +{ + if (speed != adap->speed) + return 1; + return speed; +} + +/* + * Register IHS i2c adapters + */ +#ifdef CONFIG_SYS_I2C_IHS_CH0 +U_BOOT_I2C_ADAP_COMPLETE(ihs0, ihs_i2c_init, ihs_i2c_probe, + ihs_i2c_read, ihs_i2c_write, + ihs_i2c_set_bus_speed, + CONFIG_SYS_I2C_IHS_SPEED_0, + CONFIG_SYS_I2C_IHS_SLAVE_0, 0) +#endif +#ifdef CONFIG_SYS_I2C_IHS_CH1 +U_BOOT_I2C_ADAP_COMPLETE(ihs1, ihs_i2c_init, ihs_i2c_probe, + ihs_i2c_read, ihs_i2c_write, + ihs_i2c_set_bus_speed, + CONFIG_SYS_I2C_IHS_SPEED_1, + CONFIG_SYS_I2C_IHS_SLAVE_1, 1) +#endif +#ifdef CONFIG_SYS_I2C_IHS_CH2 +U_BOOT_I2C_ADAP_COMPLETE(ihs2, ihs_i2c_init, ihs_i2c_probe, + ihs_i2c_read, ihs_i2c_write, + ihs_i2c_set_bus_speed, + CONFIG_SYS_I2C_IHS_SPEED_2, + CONFIG_SYS_I2C_IHS_SLAVE_2, 2) +#endif +#ifdef CONFIG_SYS_I2C_IHS_CH3 +U_BOOT_I2C_ADAP_COMPLETE(ihs3, ihs_i2c_init, ihs_i2c_probe, + ihs_i2c_read, ihs_i2c_write, + ihs_i2c_set_bus_speed, + CONFIG_SYS_I2C_IHS_SPEED_3, + CONFIG_SYS_I2C_IHS_SLAVE_3, 3) +#endif diff --git a/board/gdsys/common/osd.c b/board/gdsys/common/osd.c index 0290949..a839a4e 100644 --- a/board/gdsys/common/osd.c +++ b/board/gdsys/common/osd.c @@ -342,7 +342,6 @@ int osd_probe(unsigned screen) i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x37); #endif
- FPGA_SET_REG(screen, videocontrol, 0x0002); FPGA_SET_REG(screen, osd.control, 0x0049);
FPGA_SET_REG(screen, osd.xy_size, ((32 - 1) << 8) | (16 - 1)); diff --git a/include/configs/dlvision-10g.h b/include/configs/dlvision-10g.h index 7877897..d886740 100644 --- a/include/configs/dlvision-10g.h +++ b/include/configs/dlvision-10g.h @@ -97,9 +97,22 @@ /* * I2C stuff */ +#define CONFIG_SYS_I2C_PPC4XX +#define CONFIG_SYS_I2C_PPC4XX_CH0 #define CONFIG_SYS_I2C_PPC4XX_SPEED_0 100000 +#define CONFIG_SYS_I2C_PPC4XX_SLAVE_0 0x7F + +#define CONFIG_SYS_I2C_IHS_CH0 +#define CONFIG_SYS_I2C_IHS_SPEED_0 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_0 0x7F +#define CONFIG_SYS_I2C_IHS_CH1 +#define CONFIG_SYS_I2C_IHS_SPEED_1 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_1 0x7F + +#define CONFIG_SYS_SPD_BUS_NUM 2
/* Temp sensor/hwmon/dtt */ +#define CONFIG_SYS_DTT_BUS_NUM 2 #define CONFIG_DTT_LM63 1 /* National LM63 */ #define CONFIG_DTT_SENSORS { 0x4c, 0x4e, 0x18 } /* Sensor addresses */ #define CONFIG_DTT_PWM_LOOKUPTABLE \ @@ -107,6 +120,11 @@ { 54, 27 }, { 56, 31 }, { 58, 36 }, { 60, 40 } } #define CONFIG_DTT_TACH_LIMIT 0xa10
+#define CONFIG_SYS_ICS8N3QV01 +#define CONFIG_SYS_ICS8N3QV01_I2C {0, 1} +#define CONFIG_SYS_SIL1178 +#define CONFIG_SYS_SIL1178_I2C {0, 1} + /* EBC peripherals */
#define CONFIG_SYS_FLASH_BASE 0xFC000000 @@ -306,9 +324,7 @@ /* * OSD Setup */ -#define CONFIG_SYS_ICS8N3QV01 #define CONFIG_SYS_MPC92469AC -#define CONFIG_SYS_SIL1178 #define CONFIG_SYS_OSD_SCREENS CONFIG_SYS_FPGA_COUNT
#endif /* __CONFIG_H */ diff --git a/include/configs/iocon.h b/include/configs/iocon.h index 5636f38..7fa41ee 100644 --- a/include/configs/iocon.h +++ b/include/configs/iocon.h @@ -101,10 +101,24 @@ #define CONFIG_SYS_I2C_PPC4XX_SLAVE_0 0x7F
#define CONFIG_SYS_I2C_SPEED 400000 +#define CONFIG_SYS_SPD_BUS_NUM 4
#define CONFIG_PCA953X /* NXP PCA9554 */ #define CONFIG_PCA9698 /* NXP PCA9698 */
+#define CONFIG_SYS_I2C_IHS_CH0 +#define CONFIG_SYS_I2C_IHS_SPEED_0 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_0 0x7F +#define CONFIG_SYS_I2C_IHS_CH1 +#define CONFIG_SYS_I2C_IHS_SPEED_1 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_1 0x7F +#define CONFIG_SYS_I2C_IHS_CH2 +#define CONFIG_SYS_I2C_IHS_SPEED_2 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_2 0x7F +#define CONFIG_SYS_I2C_IHS_CH3 +#define CONFIG_SYS_I2C_IHS_SPEED_3 50000 +#define CONFIG_SYS_I2C_IHS_SLAVE_3 0x7F + /* * Software (bit-bang) I2C driver configuration */ @@ -121,9 +135,9 @@ #define CONFIG_SYS_I2C_SOFT_SPEED_4 50000 #define CONFIG_SYS_I2C_SOFT_SLAVE_4 0x7F
-#define CONFIG_SYS_ICS8N3QV01_I2C {1, 2, 3, 4} -#define CONFIG_SYS_CH7301_I2C {1, 2, 3, 4} -#define CONFIG_SYS_DP501_I2C {1, 2, 3, 4} +#define CONFIG_SYS_ICS8N3QV01_I2C {5, 6, 7, 8} +#define CONFIG_SYS_CH7301_I2C {5, 6, 7, 8} +#define CONFIG_SYS_DP501_I2C {0, 1, 2, 3}
#ifndef __ASSEMBLY__ void fpga_gpio_set(unsigned int bus, int pin); @@ -148,8 +162,6 @@ int fpga_gpio_get(unsigned int bus, int pin); fpga_gpio_set(I2C_ADAP_HWNR, 0x0020); \ else \ fpga_gpio_clear(I2C_ADAP_HWNR, 0x0020); \ - while (!!fpga_gpio_get(I2C_ADAP_HWNR, 0x0020) != !!bit) \ - ; \ } while (0) #define I2C_DELAY udelay(25) /* 1/4 I2C clock duration */
diff --git a/include/gdsys_fpga.h b/include/gdsys_fpga.h index 85ddbcb..276a01e 100644 --- a/include/gdsys_fpga.h +++ b/include/gdsys_fpga.h @@ -43,10 +43,12 @@ struct ihs_gpio { };
struct ihs_i2c { - u16 write_mailbox; + u16 interrupt_status; + u16 interrupt_enable; u16 write_mailbox_ext; - u16 read_mailbox; + u16 write_mailbox; u16 read_mailbox_ext; + u16 read_mailbox; };
struct ihs_osd { @@ -84,7 +86,6 @@ struct ihs_fpga { #endif
#ifdef CONFIG_IO64 - struct ihs_fpga_channel { u16 status_int; u16 config_int; @@ -121,9 +122,9 @@ struct ihs_fpga { u16 reserved_0[6]; /* 0x0008 */ struct ihs_gpio gpio; /* 0x0014 */ u16 mpc3w_control; /* 0x001a */ - u16 reserved_1[19]; /* 0x001c */ - u16 videocontrol; /* 0x0042 */ - u16 reserved_2[14]; /* 0x0044 */ + u16 reserved_1[18]; /* 0x001c */ + struct ihs_i2c i2c; /* 0x0040 */ + u16 reserved_2[10]; /* 0x004c */ u16 mc_int; /* 0x0060 */ u16 mc_int_en; /* 0x0062 */ u16 mc_status; /* 0x0064 */ @@ -150,15 +151,13 @@ struct ihs_fpga { u16 fpga_features; /* 0x0006 */ u16 reserved_0[10]; /* 0x0008 */ u16 extended_interrupt; /* 0x001c */ - u16 reserved_1[9]; /* 0x001e */ - struct ihs_i2c i2c; /* 0x0030 */ - u16 reserved_2[16]; /* 0x0038 */ + u16 reserved_1[29]; /* 0x001e */ u16 mpc3w_control; /* 0x0058 */ - u16 reserved_3[34]; /* 0x005a */ - u16 videocontrol; /* 0x009e */ - u16 reserved_4[176]; /* 0x00a0 */ + u16 reserved_2[3]; /* 0x005a */ + struct ihs_i2c i2c; /* 0x0060 */ + u16 reserved_3[205]; /* 0x0066 */ struct ihs_osd osd; /* 0x0200 */ - u16 reserved_5[761]; /* 0x020e */ + u16 reserved_4[761]; /* 0x020e */ u16 videomem[31736]; /* 0x0800 */ }; #endif