From 6fe4e5e34c584f7f4ad2c071b311e6b6a878b623 Mon Sep 17 00:00:00 2001 From: Vadim Bendebury Date: Sat, 6 Dec 2014 10:44:58 -0800 Subject: ipq806x: add i2c driver this change ports i2c and other relevant drivers from depthcharge for ipq806x. BUG=chrome-os-partner:33647 BRANCH=ToT TEST=Booted storm using vboot2 Change-Id: I3d9a431aa8adb9b91dbccdf031647dfadbafc24c Signed-off-by: Patrick Georgi Original-Commit-Id: a0c615d0a49fd9c0ffa231353800882fff6ab90b Original-Signed-off-by: Daisuke Nojiri Original-Change-Id: Id7cc3932ed4ae54f46336aaebde35e84125ebebd Original-Reviewed-on: https://chromium-review.googlesource.com/229428 Original-Reviewed-by: Vadim Bendebury Original-Tested-by: Vadim Bendebury Original-Commit-Queue: Vadim Bendebury Reviewed-on: http://review.coreboot.org/9685 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/soc/qualcomm/ipq806x/Makefile.inc | 3 + src/soc/qualcomm/ipq806x/gsbi.c | 28 +- src/soc/qualcomm/ipq806x/gsbi.h | 60 --- src/soc/qualcomm/ipq806x/i2c.c | 114 +++--- src/soc/qualcomm/ipq806x/include/soc/gsbi.h | 30 +- src/soc/qualcomm/ipq806x/include/soc/iomap.h | 7 + src/soc/qualcomm/ipq806x/include/soc/qup.h | 211 ++++++++++ src/soc/qualcomm/ipq806x/qup.c | 562 +++++++++++++-------------- src/soc/qualcomm/ipq806x/qup.h | 207 ---------- 9 files changed, 581 insertions(+), 641 deletions(-) delete mode 100644 src/soc/qualcomm/ipq806x/gsbi.h create mode 100644 src/soc/qualcomm/ipq806x/include/soc/qup.h delete mode 100644 src/soc/qualcomm/ipq806x/qup.h (limited to 'src/soc') diff --git a/src/soc/qualcomm/ipq806x/Makefile.inc b/src/soc/qualcomm/ipq806x/Makefile.inc index c0378bcdc9..0d5d59ca7f 100644 --- a/src/soc/qualcomm/ipq806x/Makefile.inc +++ b/src/soc/qualcomm/ipq806x/Makefile.inc @@ -25,6 +25,9 @@ bootblock-$(CONFIG_DRIVERS_UART) += uart.c verstage-y += clock.c verstage-y += gpio.c +verstage-y += gsbi.c +verstage-y += i2c.c +verstage-y += qup.c verstage-y += spi.c verstage-y += timer.c verstage-$(CONFIG_CONSOLE_SERIAL_IPQ806X) += uart.c diff --git a/src/soc/qualcomm/ipq806x/gsbi.c b/src/soc/qualcomm/ipq806x/gsbi.c index be75d9a043..3fc723a555 100644 --- a/src/soc/qualcomm/ipq806x/gsbi.c +++ b/src/soc/qualcomm/ipq806x/gsbi.c @@ -1,5 +1,5 @@ /* - * This file is part of the depthcharge project. + * This file is part of the coreboot project. * * Copyright (C) 2014 The Linux Foundation. All rights reserved. * @@ -28,8 +28,8 @@ */ #include -#include "drivers/gpio/ipq806x.h" -#include "ipq806x_gsbi.h" +#include +#include //TODO: To be implemented as part of the iomap. static int gsbi_base[] = { @@ -51,8 +51,6 @@ static int gsbi_base[] = { #define GSBI_APPS_NS_OFFSET 0x4 #define GSBI_APPS_MAX_OFFSET 0xff -#define GPIO_FUNC_I2C 0x1 - gsbi_return_t gsbi_init(gsbi_id_t gsbi_id, gsbi_protocol_t protocol) { unsigned i = 0; @@ -76,27 +74,9 @@ gsbi_return_t gsbi_init(gsbi_id_t gsbi_id, gsbi_protocol_t protocol) writel(0, GSBI_RESET(gsbi_id)); - switch (gsbi_id) { - case GSBI_ID_4: { - /* Configure GPIOs 13 - SCL, 12 - SDA, 2mA gpio_en */ - gpio_tlmm_config_set(12, GPIO_FUNC_I2C, - GPIO_NO_PULL, GPIO_2MA, 1); - gpio_tlmm_config_set(13, GPIO_FUNC_I2C, - GPIO_NO_PULL, GPIO_2MA, 1); - } - break; - case GSBI_ID_1: { - /* Configure GPIOs 54 - SCL, 53 - SDA, 2mA gpio_en */ - gpio_tlmm_config_set(54, GPIO_FUNC_I2C, - GPIO_NO_PULL, GPIO_2MA, 1); - gpio_tlmm_config_set(53, GPIO_FUNC_I2C, - GPIO_NO_PULL, GPIO_2MA, 1); - } - break; - default: { + if (gsbi_init_board(gsbi_id)) { ret = GSBI_UNSUPPORTED; goto bail_out; - } } /*Select i2c protocol*/ diff --git a/src/soc/qualcomm/ipq806x/gsbi.h b/src/soc/qualcomm/ipq806x/gsbi.h deleted file mode 100644 index 0da7a4796e..0000000000 --- a/src/soc/qualcomm/ipq806x/gsbi.h +++ /dev/null @@ -1,60 +0,0 @@ -/* - * This file is part of the depthcharge project. - * - * Copyright (C) 2014 The Linux Foundation. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef __GSBI_TYPES_H__ -#define __GSBI_TYPES_H__ - -typedef enum { - GSBI_ID_1 = 1, - GSBI_ID_2, - GSBI_ID_3, - GSBI_ID_4, - GSBI_ID_5, - GSBI_ID_6, - GSBI_ID_7, -} gsbi_id_t; - -typedef enum { - GSBI_SUCCESS = 0, - GSBI_ID_ERROR, - GSBI_ERROR, - GSBI_UNSUPPORTED -} gsbi_return_t; - -typedef enum { - GSBI_PROTO_I2C_UIM = 1, - GSBI_PROTO_I2C_ONLY, - GSBI_PROTO_SPI_ONLY, - GSBI_PROTO_UART_FLOW_CTL, - GSBI_PROTO_UIM, - GSBI_PROTO_I2C_UART, -} gsbi_protocol_t; - -gsbi_return_t gsbi_init(gsbi_id_t gsbi_id, gsbi_protocol_t protocol); -#endif diff --git a/src/soc/qualcomm/ipq806x/i2c.c b/src/soc/qualcomm/ipq806x/i2c.c index 9bae822a8e..a4d1c00856 100644 --- a/src/soc/qualcomm/ipq806x/i2c.c +++ b/src/soc/qualcomm/ipq806x/i2c.c @@ -1,5 +1,5 @@ /* - * This file is part of the depthcharge project. + * This file is part of the coreboot project. * * Copyright (C) 2014 The Linux Foundation. All rights reserved. * @@ -27,43 +27,25 @@ * SUCH DAMAGE. */ +#include #include -#include - -#include "base/container_of.h" -#include "drivers/bus/i2c/i2c.h" -#include "drivers/bus/i2c/ipq806x_qup.h" -#include "drivers/bus/i2c/ipq806x_gsbi.h" -#include "drivers/bus/i2c/ipq806x.h" - -static int i2c_init(unsigned gsbi_id) -{ - gsbi_return_t gsbi_ret = 0; - qup_return_t qup_ret = 0; - qup_config_t gsbi4_qup_config = { - QUP_MINICORE_I2C_MASTER, - 100000, - 24000000, - QUP_MODE_FIFO - }; - - gsbi_ret = gsbi_init(gsbi_id, GSBI_PROTO_I2C_ONLY); - if (GSBI_SUCCESS != gsbi_ret) - return 1; - - qup_ret = qup_init(gsbi_id, &gsbi4_qup_config); - if (QUP_SUCCESS != qup_ret) - return 1; - - qup_ret = qup_reset_i2c_master_status(gsbi_id); - if (QUP_SUCCESS != qup_ret) - return 1; - - return 0; -} +#include +#include +#include +#include +#include +#include +#include + +static const qup_config_t gsbi4_qup_config = { + QUP_MINICORE_I2C_MASTER, + 100000, + 24000000, + QUP_MODE_FIFO +}; static int i2c_read(uint32_t gsbi_id, uint8_t slave, - uint8_t *data, int data_len) + uint8_t *data, int data_len) { qup_data_t obj; qup_return_t qup_ret = 0; @@ -100,44 +82,54 @@ static int i2c_write(uint32_t gsbi_id, uint8_t slave, return 0; } -static int i2c_transfer(struct I2cOps *me, I2cSeg *segments, int seg_count) +static int i2c_init(unsigned bus) { - Ipq806xI2c *bus = container_of(me, Ipq806xI2c, ops); - I2cSeg *seg = segments; - int ret = 0; + static uint8_t initialized = 0; + unsigned gsbi_id = bus; - if (!bus->initialized) - if (0 != i2c_init(bus->gsbi_id)) - return 1; + if (initialized) + return 0; - while (seg_count--) { - if (seg->read) - ret = i2c_read(bus->gsbi_id, seg->chip, - seg->buf, seg->len); - else - ret = i2c_write(bus->gsbi_id, seg->chip, - seg->buf, seg->len, - (seg_count ? 0 : 1)); - seg++; + if (gsbi_init(gsbi_id, GSBI_PROTO_I2C_ONLY)) { + printk(BIOS_ERR, "failed to initialize gsbi\n"); + return 1; } - if (QUP_SUCCESS != ret) { - qup_set_state(bus->gsbi_id, QUP_STATE_RESET); + if (qup_init(gsbi_id, &gsbi4_qup_config)) { + printk(BIOS_ERR, "failed to initialize qup\n"); return 1; } + if (qup_reset_i2c_master_status(gsbi_id)) { + printk(BIOS_ERR, "failed to reset i2c master status\n"); + return 1; + } + + initialized = 1; return 0; } -Ipq806xI2c *new_ipq806x_i2c(unsigned gsbi_id) +int platform_i2c_transfer(unsigned bus, struct i2c_seg *segments, int seg_count) { - Ipq806xI2c *bus = 0; + struct i2c_seg *seg = segments; + int ret = 0; + + if (i2c_init(bus)) + return 1; - if (!i2c_init(gsbi_id)) { - bus = xzalloc(sizeof(*bus)); - bus->gsbi_id = gsbi_id; - bus->initialized = 1; - bus->ops.transfer = &i2c_transfer; + while (seg_count--) { + if (seg->read) + ret = i2c_read(bus, seg->chip, seg->buf, seg->len); + else + ret = i2c_write(bus, seg->chip, seg->buf, seg->len, + (seg_count ? 0 : 1)); + seg++; } - return bus; + + if (ret) { + qup_set_state(bus, QUP_STATE_RESET); + return 1; + } + + return 0; } diff --git a/src/soc/qualcomm/ipq806x/include/soc/gsbi.h b/src/soc/qualcomm/ipq806x/include/soc/gsbi.h index c12d6fd7b4..00c257c4b8 100644 --- a/src/soc/qualcomm/ipq806x/include/soc/gsbi.h +++ b/src/soc/qualcomm/ipq806x/include/soc/gsbi.h @@ -31,5 +31,33 @@ #define GSBI_HCLK_CTL_S 4 #define GSBI_HCLK_CTL_CLK_ENA 0x1 -#endif +typedef enum { + GSBI_ID_1 = 1, + GSBI_ID_2, + GSBI_ID_3, + GSBI_ID_4, + GSBI_ID_5, + GSBI_ID_6, + GSBI_ID_7, +} gsbi_id_t; + +typedef enum { + GSBI_SUCCESS = 0, + GSBI_ID_ERROR, + GSBI_ERROR, + GSBI_UNSUPPORTED +} gsbi_return_t; + +typedef enum { + GSBI_PROTO_I2C_UIM = 1, + GSBI_PROTO_I2C_ONLY, + GSBI_PROTO_SPI_ONLY, + GSBI_PROTO_UART_FLOW_CTL, + GSBI_PROTO_UIM, + GSBI_PROTO_I2C_UART, +} gsbi_protocol_t; +gsbi_return_t gsbi_init(gsbi_id_t gsbi_id, gsbi_protocol_t protocol); +int gsbi_init_board(gsbi_id_t gsbi_id); + +#endif diff --git a/src/soc/qualcomm/ipq806x/include/soc/iomap.h b/src/soc/qualcomm/ipq806x/include/soc/iomap.h index ad7056e0fe..333e2615eb 100644 --- a/src/soc/qualcomm/ipq806x/include/soc/iomap.h +++ b/src/soc/qualcomm/ipq806x/include/soc/iomap.h @@ -107,4 +107,11 @@ #define UART2_DM_BASE 0x12490000 #define UART_GSBI2_BASE 0x12480000 +#define GSBI_QUP1_BASE 0x12460000 +#define GSBI_QUP2_BASE 0x124A0000 +#define GSBI_QUP3_BASE 0x16280000 +#define GSBI_QUP4_BASE 0x16380000 +#define GSBI_QUP5_BASE 0x1A280000 +#define GSBI_QUP6_BASE 0x16580000 +#define GSBI_QUP7_BASE 0x16680000 #endif // __SOC_QUALCOMM_IPQ806X_IOMAP_H_ diff --git a/src/soc/qualcomm/ipq806x/include/soc/qup.h b/src/soc/qualcomm/ipq806x/include/soc/qup.h new file mode 100644 index 0000000000..8f6f6bcca9 --- /dev/null +++ b/src/soc/qualcomm/ipq806x/include/soc/qup.h @@ -0,0 +1,211 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef __QUP_H__ +#define __QUP_H__ + +#include + +/* QUP block registers */ +#define QUP_CONFIG 0x0 +#define QUP_STATE 0x4 +#define QUP_IO_MODES 0x8 +#define QUP_SW_RESET 0xc +#define QUP_TIME_OUT 0x10 +#define QUP_TIME_OUT_CURRENT 0x14 +#define QUP_OPERATIONAL 0x18 +#define QUP_ERROR_FLAGS 0x1c +#define QUP_ERROR_FLAGS_EN 0x20 +#define QUP_TEST_CTRL 0x24 +#define QUP_MX_OUTPUT_COUNT 0x100 +#define QUP_MX_OUTPUT_CNT_CURRENT 0x104 +#define QUP_OUTPUT_DEBUG 0x108 +#define QUP_OUTPUT_FIFO_WORD_CNT 0x10c +#define QUP_OUTPUT_FIFO 0x110 +#define QUP_MX_WRITE_COUNT 0x150 +#define QUP_WRITE_CNT_CURRENT 0x154 +#define QUP_MX_INPUT_COUNT 0x200 +#define QUP_READ_COUNT 0x208 +#define QUP_MX_READ_CNT_CURRENT 0x20c +#define QUP_INPUT_DEBUG 0x210 +#define QUP_INPUT_FIFO_WORD_CNT 0x214 +#define QUP_INPUT_FIFO 0x218 +#define QUP_I2C_MASTER_CLK_CTL 0x400 +#define QUP_I2C_MASTER_STATUS 0x404 + +#define OUTPUT_FIFO_FULL (1<<6) +#define INPUT_FIFO_NOT_EMPTY (1<<5) +#define OUTPUT_FIFO_NOT_EMPTY (1<<4) +#define INPUT_SERVICE_FLAG (1<<9) +#define OUTPUT_SERVICE_FLAG (1<<8) +#define QUP_OUTPUT_BIT_SHIFT_EN (1<<16) + +#define QUP_MODE_MASK (0x03) +#define QUP_OUTPUT_MODE_SHFT (10) +#define QUP_INPUT_MODE_SHFT (12) + +#define QUP_FS_DIVIDER_MASK (0xFF) + +#define QUP_MINI_CORE_PROTO_SHFT (8) +#define QUP_MINI_CORE_PROTO_MASK (0x0F) + +/* Mini-core states */ +#define QUP_STATE_RESET 0x0 +#define QUP_STATE_RUN 0x1 +#define QUP_STATE_PAUSE 0x3 +#define QUP_STATE_VALID (1<<2) +#define QUP_STATE_MASK 0x3 +#define QUP_STATE_VALID_MASK (1<<2) + +/* Tags for output FIFO */ +#define QUP_I2C_1CLK_NOOP_SEQ 0x1 /*MSB 8-bit NOP, LSB 8-bits 1 clk.*/ +#define QUP_I2C_START_SEQ (0x1 << 8) +#define QUP_I2C_DATA_SEQ (0x2 << 8) +#define QUP_I2C_STOP_SEQ (0x3 << 8) +#define QUP_I2C_RECV_SEQ (0x4 << 8) + +/* Tags for input FIFO */ +#define QUP_I2C_MIDATA_SEQ (0x5 << 8) +#define QUP_I2C_MISTOP_SEQ (0x6 << 8) +#define QUP_I2C_MINACK_SEQ (0x7 << 8) + +#define QUP_I2C_ADDR(x) ((x & 0xFF) << 1) +#define QUP_I2C_DATA(x) (x & 0xFF) +#define QUP_I2C_MI_TAG(x) (x & 0xFF00) +#define QUP_I2C_SLAVE_READ (0x1) + +/*Bit vals for I2C_MASTER_CLK_CTL register */ +#define QUP_HS_DIVIDER_SHFT (8) +#define QUP_DIVIDER_MIN_VAL (0x3) + +/* Bit masks for I2C_MASTER_STATUS register */ +#define QUP_I2C_INVALID_READ_SEQ (1 << 25) +#define QUP_I2C_INVALID_READ_ADDR (1 << 24) +#define QUP_I2C_INVALID_TAG (1 << 23) +#define QUP_I2C_FAILED_MASK (0x3 << 6) +#define QUP_I2C_ARB_LOST (1 << 4) +#define QUP_I2C_BUS_ERROR (1 << 2) + +typedef enum { + QUP_SUCCESS = 0, + QUP_ERR_BAD_PARAM, + QUP_ERR_STATE_SET, + QUP_ERR_TIMEOUT, + QUP_ERR_UNSUPPORTED, + QUP_ERR_I2C_FAILED, + QUP_ERR_I2C_ARB_LOST, + QUP_ERR_I2C_BUS_ERROR, + QUP_ERR_I2C_INVALID_SLAVE_ADDR, + QUP_ERR_XFER_FAIL, + QUP_ERR_UNDEFINED, +} qup_return_t; + +typedef enum { + QUP_MINICORE_SPI = 1, + QUP_MINICORE_I2C_MASTER, + QUP_MINICORE_I2C_SLAVE +} qup_protocol_t; + +typedef enum { + QUP_MODE_FIFO = 0, + QUP_MODE_BLOCK, + QUP_MODE_DATAMOVER, +} qup_mode_t; + +typedef struct { + qup_protocol_t protocol; + unsigned clk_frequency; + unsigned src_frequency; + qup_mode_t mode; +} qup_config_t; + +typedef struct { + qup_protocol_t protocol; + union { + struct { + uint8_t addr; + uint8_t *data; + unsigned data_len; + } iic; + struct { + void *in; + void *out; + unsigned size; + } spi; + } p; +} qup_data_t; + +/* + * Initialize GSBI QUP block for FIFO I2C transfers. + * gsbi_id[IN]: GSBI for which QUP is to be initialized. + * config_ptr[IN]: configurations parameters for the QUP. + * + * return: QUP_SUCCESS, if initialization succeeds. + */ +qup_return_t qup_init(gsbi_id_t gsbi_id, const qup_config_t *config_ptr); + +/* + * Set QUP state to run, pause, reset. + * gsbi_id[IN]: GSBI block for which QUP state is to be set. + * state[IN]: New state to transition to. + * + * return: QUP_SUCCESS, if state transition succeeds. + */ +qup_return_t qup_set_state(gsbi_id_t gsbi_id, uint32_t state); + +/* + * Reset the status bits set during an i2c transfer. + * gsbi_id[IN]: GSBI block for which i2c status bits are to be cleared. + * + * return: QUP_SUCCESS, if status bits are cleared successfully. + */ +qup_return_t qup_reset_i2c_master_status(gsbi_id_t gsbi_id); + +/* + * Send data to the peripheral on the bus. + * gsbi_id[IN]: GSBI block for which data is to be sent. + * p_tx_obj[IN]: Data to be sent to the slave on the bus. + * stop_seq[IN]: When set to non-zero QUP engine sends i2c stop sequnce. + * + * return: QUP_SUCCESS, when data is sent successfully to the peripheral. + */ +qup_return_t qup_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, + uint8_t stop_seq); + +/* + * Receive data from peripheral on the bus. + * gsbi_id[IN]: GSBI block from which data is to be received. + * p_tx_obj[IN]: length of data to be received, slave address. + * [OUT]: buffer filled with data from slave. + * + * return: QUP_SUCCESS, when data is received successfully. + */ +qup_return_t qup_recv_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj); + +#endif //__QUP_H__ diff --git a/src/soc/qualcomm/ipq806x/qup.c b/src/soc/qualcomm/ipq806x/qup.c index 5ac7f07e58..0ae3990183 100644 --- a/src/soc/qualcomm/ipq806x/qup.c +++ b/src/soc/qualcomm/ipq806x/qup.c @@ -1,5 +1,5 @@ /* - * This file is part of the depthcharge project. + * This file is part of the coreboot project. * * Copyright (C) 2014 The Linux Foundation. All rights reserved. * @@ -28,292 +28,283 @@ */ #include -#include -#include "ipq806x_qup.h" +#include +#include +#include +#include +#include + +#define TIMEOUT_CNT 100000 //TODO: refactor the following array to iomap driver. static unsigned gsbi_qup_base[] = { - 0x12460000, /*gsbi 1*/ - 0x124A0000, /*gsbi 2*/ - 0x16280000, /*gsbi 3*/ - 0x16380000, /*gsbi 4*/ - 0x1A280000, /*gsbi 5*/ - 0x16580000, /*gsbi 6*/ - 0x16680000, /*gsbi 7*/ + GSBI_QUP1_BASE, + GSBI_QUP2_BASE, + GSBI_QUP3_BASE, + GSBI_QUP4_BASE, + GSBI_QUP5_BASE, + GSBI_QUP6_BASE, + GSBI_QUP7_BASE, }; #define QUP_ADDR(gsbi_num, reg) ((void *)((gsbi_qup_base[gsbi_num-1]) + (reg))) -#define MAX_DELAY_MS 100 - -static char *get_error_string(qup_return_t error) -{ - char *msg; - switch (error) { - case QUP_ERR_BAD_PARAM: - msg = "bad parameter"; - break; - case QUP_ERR_STATE_SET: - msg = "setting state failed"; - break; - case QUP_ERR_TIMEOUT: - msg = "timeout"; - break; - case QUP_ERR_UNSUPPORTED: - msg = "unsupported"; - break; - case QUP_ERR_I2C_INVALID_SLAVE_ADDR: - msg = "invalid slave address"; - break; - case QUP_ERR_XFER_FAIL: - msg = "transfer failed"; - break; - case QUP_ERR_UNDEFINED: - default: - msg = "undefined"; - break; - } - return msg; -} static qup_return_t qup_i2c_master_status(gsbi_id_t gsbi_id) { - qup_return_t ret = QUP_SUCCESS; uint32_t reg_val = readl(QUP_ADDR(gsbi_id, QUP_I2C_MASTER_STATUS)); if (readl(QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS))) - ret = QUP_ERR_XFER_FAIL; - else if (reg_val & QUP_I2C_INVALID_READ_ADDR) - ret = QUP_ERR_I2C_INVALID_SLAVE_ADDR; - else if (reg_val & (QUP_I2C_FAILED_MASK | - QUP_I2C_ARB_LOST | - QUP_I2C_BUS_ERROR)) - ret = QUP_ERR_XFER_FAIL; + return QUP_ERR_XFER_FAIL; + if (reg_val & QUP_I2C_INVALID_READ_ADDR) + return QUP_ERR_I2C_INVALID_SLAVE_ADDR; + if (reg_val & QUP_I2C_FAILED_MASK) + return QUP_ERR_I2C_FAILED; + if (reg_val & QUP_I2C_ARB_LOST) + return QUP_ERR_I2C_ARB_LOST; + if (reg_val & QUP_I2C_BUS_ERROR) + return QUP_ERR_I2C_BUS_ERROR; - return ret; + return QUP_SUCCESS; +} + +static int check_bit_state(uint32_t *reg, int wait_for) +{ + unsigned int count = TIMEOUT_CNT; + + while ((readl(reg) & (QUP_STATE_VALID_MASK | QUP_STATE_MASK)) != + (QUP_STATE_VALID | wait_for)) { + if (count == 0) + return QUP_ERR_TIMEOUT; + count--; + udelay(1); + } + + return QUP_SUCCESS; } +/* + * Check whether GSBIn_QUP State is valid + */ static qup_return_t qup_wait_for_state(gsbi_id_t gsbi_id, unsigned wait_for) { - qup_return_t ret = QUP_ERR_STATE_SET; - uint32_t val = 0; - uint32_t start_ts; - uint32_t d = MAX_DELAY_MS * timer_hz() / 1000; - uint8_t final_state = 0; - - start_ts = timer_raw_value(); - do { - val = readl(QUP_ADDR(gsbi_id, QUP_STATE)); - final_state = ((val & (QUP_STATE_VALID_MASK|QUP_STATE_MASK)) - == (QUP_STATE_VALID|wait_for)); - } while ((!final_state) && (start_ts > (timer_raw_value() - d))); - - if (final_state) - ret = QUP_SUCCESS; + return check_bit_state(QUP_ADDR(gsbi_id, QUP_STATE), wait_for); +} - return ret; +qup_return_t qup_reset_i2c_master_status(gsbi_id_t gsbi_id) +{ + /* + * Writing a one clears the status bits. + * Bit31-25, Bit1 and Bit0 are reserved. + */ + //TODO: Define each status bit. OR all status bits in a single macro. + writel(0x3FFFFFC, QUP_ADDR(gsbi_id, QUP_I2C_MASTER_STATUS)); + return QUP_SUCCESS; } -static qup_return_t qup_i2c_write(gsbi_id_t gsbi_id, uint8_t mode, - qup_data_t *p_tx_obj, uint8_t stop_seq) +static qup_return_t qup_reset_master_status(gsbi_id_t gsbi_id) +{ + writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS)); + writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS_EN)); + qup_reset_i2c_master_status(gsbi_id); + return QUP_SUCCESS; +} + +static qup_return_t qup_fifo_wait_for(gsbi_id_t gsbi_id, uint32_t status) { qup_return_t ret = QUP_ERR_UNDEFINED; - uint32_t start_ts; - uint32_t d = MAX_DELAY_MS * timer_hz() / 1000; + unsigned int count = TIMEOUT_CNT; + + while (!(readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL)) & status)) { + ret = qup_i2c_master_status(gsbi_id); + if (ret) + return ret; + if (count == 0) + return QUP_ERR_TIMEOUT; + count--; + } - switch (mode) { - case QUP_MODE_FIFO: { - uint8_t addr = p_tx_obj->p.iic.addr; - uint8_t *data_ptr = p_tx_obj->p.iic.data; - unsigned data_len = p_tx_obj->p.iic.data_len; - unsigned idx = 0; - - writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS)); - writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS_EN)); - qup_reset_i2c_master_status(gsbi_id); - qup_set_state(gsbi_id, QUP_STATE_RUN); - - writel((QUP_I2C_START_SEQ | QUP_I2C_ADDR(addr)), - QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); - - while (data_len) { - if (data_len == 1 && stop_seq) { - writel((QUP_I2C_STOP_SEQ | - QUP_I2C_DATA(data_ptr[idx])), - QUP_ADDR(gsbi_id, - QUP_OUTPUT_FIFO)); - } else { - writel((QUP_I2C_DATA_SEQ | - QUP_I2C_DATA(data_ptr[idx])), - QUP_ADDR(gsbi_id, - QUP_OUTPUT_FIFO)); - } - data_len--; - idx++; - start_ts = timer_raw_value(); - while (data_len && readl(QUP_ADDR(gsbi_id, - QUP_OPERATIONAL)) & - OUTPUT_FIFO_FULL) { - ret = qup_i2c_master_status(gsbi_id); - if (QUP_SUCCESS != ret) - goto bailout; - if (start_ts < (timer_raw_value() - d)) { - ret = QUP_ERR_TIMEOUT; - goto bailout; - } - } - /* Hardware sets the OUTPUT_SERVICE_FLAG flag to 1 when + return QUP_SUCCESS; +} + +static qup_return_t qup_fifo_wait_while(gsbi_id_t gsbi_id, uint32_t status) +{ + qup_return_t ret = QUP_ERR_UNDEFINED; + unsigned int count = TIMEOUT_CNT; + + while (readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL)) & status) { + ret = qup_i2c_master_status(gsbi_id); + if (ret) + return ret; + if (count == 0) + return QUP_ERR_TIMEOUT; + count--; + } + + return QUP_SUCCESS; +} + +static qup_return_t qup_i2c_write_fifo(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, + uint8_t stop_seq) +{ + qup_return_t ret = QUP_ERR_UNDEFINED; + uint8_t addr = p_tx_obj->p.iic.addr; + uint8_t *data_ptr = p_tx_obj->p.iic.data; + unsigned data_len = p_tx_obj->p.iic.data_len; + unsigned idx = 0; + + qup_reset_master_status(gsbi_id); + qup_set_state(gsbi_id, QUP_STATE_RUN); + + writel((QUP_I2C_START_SEQ | QUP_I2C_ADDR(addr)), + QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); + + while (data_len) { + if (data_len == 1 && stop_seq) { + writel((QUP_I2C_STOP_SEQ | QUP_I2C_DATA(data_ptr[idx])), + QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); + } else { + writel((QUP_I2C_DATA_SEQ | QUP_I2C_DATA(data_ptr[idx])), + QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); + } + data_len--; + idx++; + if (data_len) { + ret = qup_fifo_wait_while(gsbi_id, OUTPUT_FIFO_FULL); + if (ret) + return ret; + } + /* Hardware sets the OUTPUT_SERVICE_FLAG flag to 1 when OUTPUT_FIFO_NOT_EMPTY flag in the QUP_OPERATIONAL register changes from 1 to 0, indicating that software can write more data to the output FIFO. Software should set OUTPUT_SERVICE_FLAG to 1 to clear it to 0, which means that software knows to return to fill the output FIFO with data. - */ - if (readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL)) & - OUTPUT_SERVICE_FLAG) { - writel(OUTPUT_SERVICE_FLAG, - QUP_ADDR(gsbi_id, - QUP_OPERATIONAL)); - } + */ + if (readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL)) & + OUTPUT_SERVICE_FLAG) { + writel(OUTPUT_SERVICE_FLAG, + QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); } + } - start_ts = timer_raw_value(); - while (((readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL))) & - OUTPUT_FIFO_NOT_EMPTY)) { - ret = qup_i2c_master_status(gsbi_id); - if (QUP_SUCCESS != ret) - goto bailout; - if (start_ts < (timer_raw_value() - d)) { - ret = QUP_ERR_TIMEOUT; - goto bailout; - } - } + ret = qup_fifo_wait_while(gsbi_id, OUTPUT_FIFO_NOT_EMPTY); + if (ret) + return ret; - qup_set_state(gsbi_id, QUP_STATE_PAUSE); - ret = QUP_SUCCESS; - } - break; + qup_set_state(gsbi_id, QUP_STATE_PAUSE); + return QUP_SUCCESS; +} +static qup_return_t qup_i2c_write(gsbi_id_t gsbi_id, uint8_t mode, + qup_data_t *p_tx_obj, uint8_t stop_seq) +{ + qup_return_t ret = QUP_ERR_UNDEFINED; + + switch (mode) { + case QUP_MODE_FIFO: + ret = qup_i2c_write_fifo(gsbi_id, p_tx_obj, stop_seq); + break; default: ret = QUP_ERR_UNSUPPORTED; } -bailout: - if (QUP_SUCCESS != ret) { + if (ret) { qup_set_state(gsbi_id, QUP_STATE_RESET); - printf("%s() returns %s\n", __func__, get_error_string(ret)); + printk(BIOS_ERR, "%s() failed (%d)\n", __func__, ret); } return ret; } -static qup_return_t qup_i2c_read(gsbi_id_t gsbi_id, uint8_t mode, - qup_data_t *p_tx_obj) +static qup_return_t qup_i2c_read_fifo(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj) { qup_return_t ret = QUP_ERR_UNDEFINED; - uint32_t start_ts; - uint32_t d = MAX_DELAY_MS * timer_hz() / 1000; + uint8_t addr = p_tx_obj->p.iic.addr; + uint8_t *data_ptr = p_tx_obj->p.iic.data; + unsigned data_len = p_tx_obj->p.iic.data_len; + unsigned idx = 0; - switch (mode) { - case QUP_MODE_FIFO: { - uint8_t addr = p_tx_obj->p.iic.addr; - uint8_t *data_ptr = p_tx_obj->p.iic.data; - unsigned data_len = p_tx_obj->p.iic.data_len; - unsigned idx = 0; - - writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS)); - writel(0x7C, QUP_ADDR(gsbi_id, QUP_ERROR_FLAGS_EN)); - qup_reset_i2c_master_status(gsbi_id); - qup_set_state(gsbi_id, QUP_STATE_RUN); - - writel((QUP_I2C_START_SEQ | - (QUP_I2C_ADDR(addr)| - QUP_I2C_SLAVE_READ)), - QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); - - writel((QUP_I2C_RECV_SEQ | data_len), - QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); - - start_ts = timer_raw_value(); - while ((readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL)) & - OUTPUT_FIFO_NOT_EMPTY)) { - ret = qup_i2c_master_status(gsbi_id); - if (QUP_SUCCESS != ret) - goto bailout; - if (start_ts < (timer_raw_value() - d)) { - ret = QUP_ERR_TIMEOUT; - goto bailout; - } - } + qup_reset_master_status(gsbi_id); + qup_set_state(gsbi_id, QUP_STATE_RUN); + + writel((QUP_I2C_START_SEQ | (QUP_I2C_ADDR(addr) | QUP_I2C_SLAVE_READ)), + QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); - writel(OUTPUT_SERVICE_FLAG, - QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); - - while (data_len) { - unsigned data; - start_ts = timer_raw_value(); - while ((!((readl(QUP_ADDR(gsbi_id, QUP_OPERATIONAL))) & - INPUT_SERVICE_FLAG))) { - ret = qup_i2c_master_status(gsbi_id); - if (QUP_SUCCESS != ret) - goto bailout; - if (start_ts < (timer_raw_value() - d)) { - ret = QUP_ERR_TIMEOUT; - goto bailout; - } - } - - data = readl(QUP_ADDR(gsbi_id, QUP_INPUT_FIFO)); - - /*Process tag and corresponding data value. - For I2C master mini-core, data in FIFO is composed of - 16 bits and is divided into an 8-bit tag for the upper - bits and 8-bit data for the lower bits. - The 8-bit tag indicates whether the byte is the last - byte, or if a bus error happened during the receipt of - the byte.*/ - if ((QUP_I2C_MI_TAG(data)) == QUP_I2C_MIDATA_SEQ) { - /* Tag: MIDATA = Master input data.*/ - data_ptr[idx] = QUP_I2C_DATA(data); - idx++; - data_len--; - writel(INPUT_SERVICE_FLAG, QUP_ADDR(gsbi_id, - QUP_OPERATIONAL)); - } else if (QUP_I2C_MI_TAG(data) == - QUP_I2C_MISTOP_SEQ) { - /* Tag: MISTOP: Last byte of master input. */ - data_ptr[idx] = QUP_I2C_DATA(data); - idx++; - data_len--; - goto recv_done; - } else { - /* Tag: MINACK: Invalid master input data.*/ - goto recv_done; - } + writel((QUP_I2C_RECV_SEQ | data_len), + QUP_ADDR(gsbi_id, QUP_OUTPUT_FIFO)); + + ret = qup_fifo_wait_while(gsbi_id, OUTPUT_FIFO_NOT_EMPTY); + if (ret) + return ret; + + writel(OUTPUT_SERVICE_FLAG, QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); + + while (data_len) { + uint32_t data; + + ret = qup_fifo_wait_for(gsbi_id, INPUT_SERVICE_FLAG); + if (ret) + return ret; + + data = readl(QUP_ADDR(gsbi_id, QUP_INPUT_FIFO)); + + /* + * Process tag and corresponding data value. For I2C master + * mini-core, data in FIFO is composed of 16 bits and is divided + * into an 8-bit tag for the upper bits and 8-bit data for the + * lower bits. The 8-bit tag indicates whether the byte is the + * last byte, or if a bus error happened during the receipt of + * the byte. + */ + if ((QUP_I2C_MI_TAG(data)) == QUP_I2C_MIDATA_SEQ) { + /* Tag: MIDATA = Master input data.*/ + data_ptr[idx] = QUP_I2C_DATA(data); + idx++; + data_len--; + writel(INPUT_SERVICE_FLAG, + QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); + } else if (QUP_I2C_MI_TAG(data) == QUP_I2C_MISTOP_SEQ) { + /* Tag: MISTOP: Last byte of master input. */ + data_ptr[idx] = QUP_I2C_DATA(data); + idx++; + data_len--; + break; + } else { + /* Tag: MINACK: Invalid master input data.*/ + break; } -recv_done: - writel(INPUT_SERVICE_FLAG, - QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); - p_tx_obj->p.iic.data_len = idx; - qup_set_state(gsbi_id, QUP_STATE_PAUSE); - ret = QUP_SUCCESS; } - break; + writel(INPUT_SERVICE_FLAG, QUP_ADDR(gsbi_id, QUP_OPERATIONAL)); + p_tx_obj->p.iic.data_len = idx; + qup_set_state(gsbi_id, QUP_STATE_PAUSE); + + return QUP_SUCCESS; +} + +static qup_return_t qup_i2c_read(gsbi_id_t gsbi_id, uint8_t mode, + qup_data_t *p_tx_obj) +{ + qup_return_t ret = QUP_ERR_UNDEFINED; + + switch (mode) { + case QUP_MODE_FIFO: + ret = qup_i2c_read_fifo(gsbi_id, p_tx_obj); + break; default: ret = QUP_ERR_UNSUPPORTED; } -bailout: - if (QUP_SUCCESS != ret) { + if (ret) { qup_set_state(gsbi_id, QUP_STATE_RESET); - printf("%s() returns %s\n", __func__, get_error_string(ret)); + printk(BIOS_ERR, "%s() failed (%d)\n", __func__, ret); } return ret; } -qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr) +qup_return_t qup_init(gsbi_id_t gsbi_id, const qup_config_t *config_ptr) { qup_return_t ret = QUP_ERR_UNDEFINED; uint32_t reg_val; @@ -323,11 +314,10 @@ qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr) /*Wait till the reset takes effect */ ret = qup_wait_for_state(gsbi_id, QUP_STATE_RESET); + if (ret) + goto bailout; - if (QUP_SUCCESS != ret) - return ret; - - /*Reset the config*/ + /* Reset the config */ writel(0, QUP_ADDR(gsbi_id, QUP_CONFIG)); /*Program the config register*/ @@ -335,16 +325,14 @@ qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr) reg_val = 0x0F; /*Set protocol*/ switch (config_ptr->protocol) { - case QUP_MINICORE_I2C_MASTER: { + case QUP_MINICORE_I2C_MASTER: reg_val |= ((config_ptr->protocol & QUP_MINI_CORE_PROTO_MASK) << QUP_MINI_CORE_PROTO_SHFT); - } break; - default: { + default: ret = QUP_ERR_UNSUPPORTED; goto bailout; - } } writel(reg_val, QUP_ADDR(gsbi_id, QUP_CONFIG)); @@ -353,18 +341,16 @@ qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr) /*Set QUP IO Mode*/ switch (config_ptr->mode) { - case QUP_MODE_FIFO: { + case QUP_MODE_FIFO: reg_val = QUP_OUTPUT_BIT_SHIFT_EN | ((config_ptr->mode & QUP_MODE_MASK) << QUP_OUTPUT_MODE_SHFT) | ((config_ptr->mode & QUP_MODE_MASK) << QUP_INPUT_MODE_SHFT); - } break; - default: { + default: ret = QUP_ERR_UNSUPPORTED; goto bailout; - } } writel(reg_val, QUP_ADDR(gsbi_id, QUP_IO_MODES)); @@ -376,8 +362,8 @@ qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr) writel(reg_val, QUP_ADDR(gsbi_id, QUP_I2C_MASTER_CLK_CTL)); bailout: - if (QUP_SUCCESS != ret) - printf("%s() returns %s\n", __func__, get_error_string(ret)); + if (ret) + printk(BIOS_ERR, "failed to init qup (%d)\n", ret); return ret; } @@ -394,8 +380,7 @@ qup_return_t qup_set_state(gsbi_id_t gsbi_id, uint32_t state) * two writes of 10[binary]) are required for the * transition to complete. */ - if (QUP_STATE_PAUSE == curr_state && - QUP_STATE_RESET == state) { + if (QUP_STATE_PAUSE == curr_state && QUP_STATE_RESET == state) { writel(0x2, QUP_ADDR(gsbi_id, QUP_STATE)); writel(0x2, QUP_ADDR(gsbi_id, QUP_STATE)); } else { @@ -403,18 +388,28 @@ qup_return_t qup_set_state(gsbi_id_t gsbi_id, uint32_t state) } ret = qup_wait_for_state(gsbi_id, state); } + return ret; } -qup_return_t qup_reset_i2c_master_status(gsbi_id_t gsbi_id) +static qup_return_t qup_i2c_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, + uint8_t stop_seq) { - /* - * Writing a one clears the status bits. - * Bit31-25, Bit1 and Bit0 are reserved. - */ - //TODO: Define each status bit. OR all status bits in a single macro. - writel(0x3FFFFFC, QUP_ADDR(gsbi_id, QUP_I2C_MASTER_STATUS)); - return QUP_SUCCESS; + qup_return_t ret = QUP_ERR_UNDEFINED; + uint8_t mode = (readl(QUP_ADDR(gsbi_id, QUP_IO_MODES)) >> + QUP_OUTPUT_MODE_SHFT) & QUP_MODE_MASK; + + ret = qup_i2c_write(gsbi_id, mode, p_tx_obj, stop_seq); + if (0) { + int i; + printk(BIOS_DEBUG, "i2c tx bus %d device %2.2x:", + gsbi_id, p_tx_obj->p.iic.addr); + for (i = 0; i < p_tx_obj->p.iic.data_len; i++) + printk(BIOS_DEBUG, " %2.2x", p_tx_obj->p.iic.data[i]); + printk(BIOS_DEBUG, "\n"); + } + + return ret; } qup_return_t qup_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, @@ -423,61 +418,52 @@ qup_return_t qup_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, qup_return_t ret = QUP_ERR_UNDEFINED; if (p_tx_obj->protocol == ((readl(QUP_ADDR(gsbi_id, QUP_CONFIG)) >> - QUP_MINI_CORE_PROTO_SHFT) & - QUP_MINI_CORE_PROTO_MASK)) { + QUP_MINI_CORE_PROTO_SHFT) & QUP_MINI_CORE_PROTO_MASK)) { switch (p_tx_obj->protocol) { - case QUP_MINICORE_I2C_MASTER: { - uint8_t mode = (readl(QUP_ADDR(gsbi_id, - QUP_IO_MODES)) >> - QUP_OUTPUT_MODE_SHFT) & - QUP_MODE_MASK; - ret = qup_i2c_write(gsbi_id, mode, p_tx_obj, stop_seq); - if (0) { - int i; - printf("i2c tx bus %d device %2.2x:", - gsbi_id, p_tx_obj->p.iic.addr); - for (i = 0; i < p_tx_obj->p.iic.data_len; i++) - printf(" %2.2x", - p_tx_obj->p.iic.data[i]); - printf("\n"); - } + case QUP_MINICORE_I2C_MASTER: + ret = qup_i2c_send_data(gsbi_id, p_tx_obj, stop_seq); break; - } - default: ret = QUP_ERR_UNSUPPORTED; } } + + return ret; +} + +static qup_return_t qup_i2c_recv_data(gsbi_id_t gsbi_id, qup_data_t *p_rx_obj) +{ + qup_return_t ret = QUP_ERR_UNDEFINED; + uint8_t mode = (readl(QUP_ADDR(gsbi_id, QUP_IO_MODES)) >> + QUP_INPUT_MODE_SHFT) & QUP_MODE_MASK; + + ret = qup_i2c_read(gsbi_id, mode, p_rx_obj); + if (0) { + int i; + printk(BIOS_DEBUG, "i2c rxed on bus %d device %2.2x:", + gsbi_id, p_rx_obj->p.iic.addr); + for (i = 0; i < p_rx_obj->p.iic.data_len; i++) + printk(BIOS_DEBUG, " %2.2x", p_rx_obj->p.iic.data[i]); + printk(BIOS_DEBUG, "\n"); + } + return ret; } qup_return_t qup_recv_data(gsbi_id_t gsbi_id, qup_data_t *p_rx_obj) { qup_return_t ret = QUP_ERR_UNDEFINED; + if (p_rx_obj->protocol == ((readl(QUP_ADDR(gsbi_id, QUP_CONFIG)) >> - QUP_MINI_CORE_PROTO_SHFT) & - QUP_MINI_CORE_PROTO_MASK)) { + QUP_MINI_CORE_PROTO_SHFT) & QUP_MINI_CORE_PROTO_MASK)) { switch (p_rx_obj->protocol) { - case QUP_MINICORE_I2C_MASTER: { - uint8_t mode = (readl(QUP_ADDR(gsbi_id, - QUP_IO_MODES)) >> - QUP_INPUT_MODE_SHFT) & - QUP_MODE_MASK; - ret = qup_i2c_read(gsbi_id, mode, p_rx_obj); - if (0) { - int i; - printf("i2c rxed on bus %d device %2.2x:", - gsbi_id, p_rx_obj->p.iic.addr); - for (i = 0; i < p_rx_obj->p.iic.data_len; i++) - printf(" %2.2x", - p_rx_obj->p.iic.data[i]); - printf("\n"); - } + case QUP_MINICORE_I2C_MASTER: + ret = qup_i2c_recv_data(gsbi_id, p_rx_obj); break; - } default: ret = QUP_ERR_UNSUPPORTED; } } + return ret; } diff --git a/src/soc/qualcomm/ipq806x/qup.h b/src/soc/qualcomm/ipq806x/qup.h deleted file mode 100644 index f848cf6413..0000000000 --- a/src/soc/qualcomm/ipq806x/qup.h +++ /dev/null @@ -1,207 +0,0 @@ -/* - * This file is part of the depthcharge project. - * - * Copyright (C) 2014 The Linux Foundation. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef __QUP_H__ -#define __QUP_H__ -#include "ipq806x_gsbi.h" - -/* QUP block registers */ -#define QUP_CONFIG 0x0 -#define QUP_STATE 0x4 -#define QUP_IO_MODES 0x8 -#define QUP_SW_RESET 0xc -#define QUP_TIME_OUT 0x10 -#define QUP_TIME_OUT_CURRENT 0x14 -#define QUP_OPERATIONAL 0x18 -#define QUP_ERROR_FLAGS 0x1c -#define QUP_ERROR_FLAGS_EN 0x20 -#define QUP_TEST_CTRL 0x24 -#define QUP_MX_OUTPUT_COUNT 0x100 -#define QUP_MX_OUTPUT_CNT_CURRENT 0x104 -#define QUP_OUTPUT_DEBUG 0x108 -#define QUP_OUTPUT_FIFO_WORD_CNT 0x10c -#define QUP_OUTPUT_FIFO 0x110 -#define QUP_MX_WRITE_COUNT 0x150 -#define QUP_WRITE_CNT_CURRENT 0x154 -#define QUP_MX_INPUT_COUNT 0x200 -#define QUP_READ_COUNT 0x208 -#define QUP_MX_READ_CNT_CURRENT 0x20c -#define QUP_INPUT_DEBUG 0x210 -#define QUP_INPUT_FIFO_WORD_CNT 0x214 -#define QUP_INPUT_FIFO 0x218 -#define QUP_I2C_MASTER_CLK_CTL 0x400 -#define QUP_I2C_MASTER_STATUS 0x404 - -#define OUTPUT_FIFO_FULL (1<<6) -#define INPUT_FIFO_NOT_EMPTY (1<<5) -#define OUTPUT_FIFO_NOT_EMPTY (1<<4) -#define INPUT_SERVICE_FLAG (1<<9) -#define OUTPUT_SERVICE_FLAG (1<<8) -#define QUP_OUTPUT_BIT_SHIFT_EN (1<<16) - -#define QUP_MODE_MASK (0x03) -#define QUP_OUTPUT_MODE_SHFT (10) -#define QUP_INPUT_MODE_SHFT (12) - -#define QUP_FS_DIVIDER_MASK (0xFF) - -#define QUP_MINI_CORE_PROTO_SHFT (8) -#define QUP_MINI_CORE_PROTO_MASK (0x0F) - -/* Mini-core states */ -#define QUP_STATE_RESET 0x0 -#define QUP_STATE_RUN 0x1 -#define QUP_STATE_PAUSE 0x3 -#define QUP_STATE_VALID (1<<2) -#define QUP_STATE_MASK 0x3 -#define QUP_STATE_VALID_MASK (1<<2) - -/* Tags for output FIFO */ -#define QUP_I2C_1CLK_NOOP_SEQ 0x1 /*MSB 8-bit NOP, LSB 8-bits 1 clk.*/ -#define QUP_I2C_START_SEQ (0x1 << 8) -#define QUP_I2C_DATA_SEQ (0x2 << 8) -#define QUP_I2C_STOP_SEQ (0x3 << 8) -#define QUP_I2C_RECV_SEQ (0x4 << 8) - -/* Tags for input FIFO */ -#define QUP_I2C_MIDATA_SEQ (0x5 << 8) -#define QUP_I2C_MISTOP_SEQ (0x6 << 8) -#define QUP_I2C_MINACK_SEQ (0x7 << 8) - -#define QUP_I2C_ADDR(x) ((x & 0xFF) << 1) -#define QUP_I2C_DATA(x) (x & 0xFF) -#define QUP_I2C_MI_TAG(x) (x & 0xFF00) -#define QUP_I2C_SLAVE_READ (0x1) - -/*Bit vals for I2C_MASTER_CLK_CTL register */ -#define QUP_HS_DIVIDER_SHFT (8) -#define QUP_DIVIDER_MIN_VAL (0x3) - -/* Bit masks for I2C_MASTER_STATUS register */ -#define QUP_I2C_INVALID_READ_SEQ (1 << 25) -#define QUP_I2C_INVALID_READ_ADDR (1 << 24) -#define QUP_I2C_INVALID_TAG (1 << 23) -#define QUP_I2C_FAILED_MASK (0x3 << 6) -#define QUP_I2C_ARB_LOST (1 << 4) -#define QUP_I2C_BUS_ERROR (1 << 2) - -typedef enum { - QUP_SUCCESS = 0, - QUP_ERR_BAD_PARAM, - QUP_ERR_STATE_SET, - QUP_ERR_TIMEOUT, - QUP_ERR_UNSUPPORTED, - QUP_ERR_I2C_INVALID_SLAVE_ADDR, - QUP_ERR_XFER_FAIL, - QUP_ERR_UNDEFINED, -} qup_return_t; - -typedef enum { - QUP_MINICORE_SPI = 1, - QUP_MINICORE_I2C_MASTER, - QUP_MINICORE_I2C_SLAVE -} qup_protocol_t; - -typedef enum { - QUP_MODE_FIFO = 0, - QUP_MODE_BLOCK, - QUP_MODE_DATAMOVER, -} qup_mode_t; - -typedef struct { - qup_protocol_t protocol; - unsigned clk_frequency; - unsigned src_frequency; - qup_mode_t mode; -} qup_config_t; - -typedef struct { - qup_protocol_t protocol; - union { - struct { - uint8_t addr; - uint8_t *data; - unsigned data_len; - } iic; - struct { - void *in; - void *out; - unsigned size; - } spi; - } p; -} qup_data_t; - -/* - * Initialize GSBI QUP block for FIFO I2C transfers. - * gsbi_id[IN]: GSBI for which QUP is to be initialized. - * config_ptr[IN]: configurations parameters for the QUP. - * - * return: QUP_SUCCESS, if initialization succeeds. - */ -qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr); - -/* - * Set QUP state to run, pause, reset. - * gsbi_id[IN]: GSBI block for which QUP state is to be set. - * state[IN]: New state to transition to. - * - * return: QUP_SUCCESS, if state transition succeeds. - */ -qup_return_t qup_set_state(gsbi_id_t gsbi_id, uint32_t state); - -/* - * Reset the status bits set during an i2c transfer. - * gsbi_id[IN]: GSBI block for which i2c status bits are to be cleared. - * - * return: QUP_SUCCESS, if status bits are cleared successfully. - */ -qup_return_t qup_reset_i2c_master_status(gsbi_id_t gsbi_id); - -/* - * Send data to the peripheral on the bus. - * gsbi_id[IN]: GSBI block for which data is to be sent. - * p_tx_obj[IN]: Data to be sent to the slave on the bus. - * stop_seq[IN]: When set to non-zero QUP engine sends i2c stop sequnce. - * - * return: QUP_SUCCESS, when data is sent successfully to the peripheral. - */ -qup_return_t qup_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, - uint8_t stop_seq); - -/* - * Receive data from peripheral on the bus. - * gsbi_id[IN]: GSBI block from which data is to be received. - * p_tx_obj[IN]: length of data to be received, slave address. - * [OUT]: buffer filled with data from slave. - * - * return: QUP_SUCCESS, when data is received successfully. - */ -qup_return_t qup_recv_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj); - -#endif //__QUP_H__ -- cgit v1.2.3