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rt-thread/bsp/allwinner/libraries/sunxi-hal/hal/source/spi/hal_spi.c

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sync branch rt-smart. (#6641) * Synchronize the code of the rt mart branch to the master branch. * TTY device * Add lwP code from rt-smart * Add vnode in DFS, but DFS will be re-write for rt-smart * There are three libcpu for rt-smart: * arm/cortex-a, arm/aarch64 * riscv64 Co-authored-by: Rbb666 <zhangbingru@rt-thread.com> Co-authored-by: zhkag <zhkag@foxmail.com>
2022-12-03 12:07:44 +08:00
/*
* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
*
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the People's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
*
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTY¡¯S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR
* MPEGLA, ETC.)
* IN ALLWINNERS¡¯SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT
* TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY¡¯S TECHNOLOGY.
*
*
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER 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.
*/
#define DBG_LVL DBG_WARNING
#define DBG_TAG "hal.spi"
#include <stdio.h>
#include <stdlib.h>
#include <interrupt.h>
#include <sunxi_hal_spi.h>
#include <hal_cache.h>
#include <hal_mem.h>
#include <hal_osal.h>
#include <hal_log.h>
#include <hal_gpio.h>
#include <hal_dma.h>
#include <hal_reset.h>
#ifdef CONFIG_OS_MELIS
#include <hal_cfg.h>
#include <script.h>
#endif
#define SPI_ALIGN(x, a) __ALIGN_KERNEL((x), (a))
#define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a)-1), (a))
#define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a)-1)
#define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
#define MIN(a, b) (a > b ? b : a)
#if (0)
#define CONFIG_SUNXI_SPI_CPU_XFER_ONLY
#endif
#if (0)
#define SPI_INFO_LEVEL
#endif
#if (0)
#define SPI_DATA_LEVEL
#endif
#if (0)
#define SPI_DUMPREG_LEVEL
#endif
#ifdef SPI_INFO_LEVEL
#define SPI_INFO(fmt, arg...) LOG_I("%s()%d " fmt, __func__, __LINE__, ##arg)
#define SPI_INFO_IRQ(fmt, arg...) LOG_I("%s()%d " fmt, __func__, __LINE__, ##arg)
#define SPI_ERR(fmt, arg...) LOG_E("%s()%d " fmt, __func__, __LINE__, ##arg)
#define SPI_INIT(fmt, arg...) LOG_I("%s()%d " fmt, __func__, __LINE__, ##arg)
#else
#define SPI_INFO(fmt, arg...) \
do \
{ \
} while (0);
#define SPI_INFO_IRQ(fmt, arg...) \
do \
{ \
} while (0);
#define SPI_ERR(fmt, arg...) \
do \
{ \
} while (0);
#define SPI_INIT(fmt, arg...) \
do \
{ \
} while (0);
#endif
static sunxi_spi_t g_sunxi_spi[HAL_SPI_MASTER_MAX];
struct sunxi_spi_params_t g_sunxi_spi_params[] = {
SPI0_PARAMS,
SPI1_PARAMS,
#ifdef SPI2_PARAMS
SPI2_PARAMS,
#endif
};
void spi_dump_reg(sunxi_spi_t *sspi, uint32_t offset, uint32_t len)
{
uint32_t i;
uint8_t buf[64], cnt = 0;
for (i = 0; i < len; i = i + REG_INTERVAL)
{
if (i % HEXADECIMAL == 0)
cnt += sprintf(buf + cnt, "0x%08lx: ",
(unsigned long)(sspi->base + offset + i));
cnt += sprintf(buf + cnt, "%08lx ",
(unsigned long)hal_readl(sspi->base + offset + i));
if (i % HEXADECIMAL == REG_CL)
{
rt_kprintf("%s\n", buf);
cnt = 0;
}
}
}
/* config chip select */
static spi_master_status_t spi_set_cs(hal_spi_master_slave_port_t chipselect, sunxi_spi_t *sspi)
{
spi_master_status_t ret;
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
if (chipselect < 4)
{
reg_val &= ~SPI_TC_SS_MASK; /* SS-chip select, clear two bits */
reg_val |= chipselect
<< SPI_TC_SS_BIT_POS; /* set chip select */
hal_writel(reg_val, sspi->base + SPI_TC_REG);
ret = SPI_MASTER_OK;
}
else
{
SPI_ERR("[spi%d] Chip Select set fail! cs = %d\n", sspi->port,
chipselect);
ret = SPI_MASTER_INVALID_PARAMETER;
}
return ret;
}
static void spi_config_dhb(sunxi_spi_t *sspi, uint8_t value)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
/*6.discard hash burst-DHB */
if (value)
{
reg_val &= ~SPI_TC_DHB;
}
else
{
reg_val |= SPI_TC_DHB; /*default DHB =1, discard unused burst */
}
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
/* config spi */
static void spi_config_tc(uint32_t config, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
/*1. POL */
if (config & SPI_POL_ACTIVE_)
{
reg_val |= SPI_TC_POL; /*default POL = 1 */
}
else
{
reg_val &= ~SPI_TC_POL;
}
/*2. PHA */
if (config & SPI_PHA_ACTIVE_)
{
reg_val |= SPI_TC_PHA; /*default PHA = 1 */
}
else
{
reg_val &= ~SPI_TC_PHA;
}
/*3. SSPOL,chip select signal polarity */
if (config & SPI_CS_HIGH_ACTIVE_)
{
reg_val &= ~SPI_TC_SPOL;
}
else
{
reg_val |= SPI_TC_SPOL; /*default SSPOL = 1,Low level effect */
}
/*4. LMTF--LSB/MSB transfer first select */
if (config & SPI_LSB_FIRST_ACTIVE_)
{
reg_val |= SPI_TC_FBS;
}
else
{
reg_val &= ~SPI_TC_FBS; /*default LMTF =0, MSB first */
}
/* set DDB,DHB,SMC,SSCTL */
/*5. dummy burst type */
if (config & SPI_DUMMY_ONE_ACTIVE_)
{
reg_val |= SPI_TC_DDB;
}
else
{
reg_val &= ~SPI_TC_DDB; /*default DDB =0, ZERO */
}
/*6.discard hash burst-DHB */
if (config & SPI_RECEIVE_ALL_ACTIVE_)
{
reg_val &= ~SPI_TC_DHB;
}
else
{
reg_val |= SPI_TC_DHB; /*default DHB =1, discard unused burst */
}
/*7. set SMC = 1 , SSCTL = 0 ,TPE = 1 */
reg_val &= ~SPI_TC_SSCTL;
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
/* delay internal read sample point*/
static void spi_sample_delay(uint32_t sdm, uint32_t sdc, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
uint32_t org_val = reg_val;
if (sdm)
{
reg_val |= SPI_TC_SDM;
}
else
{
reg_val &= ~SPI_TC_SDM;
}
if (sdc)
{
reg_val |= SPI_TC_SDC;
}
else
{
reg_val &= ~SPI_TC_SDC;
}
if (reg_val != org_val)
{
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
}
/* start spi transfer */
static void spi_start_xfer(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
reg_val |= SPI_TC_XCH;
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
/* enable spi bus */
static void spi_enable_bus(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_GC_REG);
reg_val |= SPI_GC_EN;
hal_writel(reg_val, sspi->base + SPI_GC_REG);
}
/* disbale spi bus */
static void spi_disable_bus(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_GC_REG);
reg_val &= ~SPI_GC_EN;
hal_writel(reg_val, sspi->base + SPI_GC_REG);
}
/* set master mode */
static void spi_set_master(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_GC_REG);
reg_val |= SPI_GC_MODE;
hal_writel(reg_val, sspi->base + SPI_GC_REG);
}
/* soft reset spi controller */
static void spi_soft_reset(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_GC_REG);
reg_val |= SPI_GC_SRST;
hal_writel(reg_val, sspi->base + SPI_GC_REG);
}
/* enable transmit pause */
static void spi_enable_tp(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_GC_REG);
reg_val |= SPI_GC_TP_EN;
hal_writel(reg_val, sspi->base + SPI_GC_REG);
}
/* set ss control */
static void spi_ss_owner(sunxi_spi_t *sspi, uint32_t on_off)
{
u32 reg_val = hal_readl(sspi->base + SPI_TC_REG);
on_off &= 0x1;
if (on_off)
{
reg_val |= SPI_TC_SS_OWNER;
}
else
{
reg_val &= ~SPI_TC_SS_OWNER;
}
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
/* enable irq type */
static void spi_enable_irq(uint32_t bitmap, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_INT_CTL_REG);
bitmap &= SPI_INTEN_MASK;
reg_val |= bitmap;
hal_writel(reg_val, sspi->base + SPI_INT_CTL_REG);
}
/* disable irq type */
static void spi_disable_irq(uint32_t bitmap, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_INT_CTL_REG);
bitmap &= SPI_INTEN_MASK;
reg_val &= ~bitmap;
hal_writel(reg_val, sspi->base + SPI_INT_CTL_REG);
}
/* enable dma irq */
static void spi_enable_dma_irq(uint32_t bitmap, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_FIFO_CTL_REG);
bitmap &= SPI_FIFO_CTL_DRQEN_MASK;
reg_val |= bitmap;
hal_writel(reg_val, sspi->base + SPI_FIFO_CTL_REG);
}
/* disable dma irq */
static void spi_disable_dma_irq(uint32_t bitmap, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_FIFO_CTL_REG);
bitmap &= SPI_FIFO_CTL_DRQEN_MASK;
reg_val &= ~bitmap;
hal_writel(reg_val, sspi->base + SPI_FIFO_CTL_REG);
}
/* query irq enable */
static uint32_t spi_qry_irq_enable(sunxi_spi_t *sspi)
{
return (SPI_INTEN_MASK & hal_readl(sspi->base + SPI_INT_CTL_REG));
}
/* query irq pending */
static uint32_t spi_qry_irq_pending(sunxi_spi_t *sspi)
{
return (SPI_INT_STA_MASK & hal_readl(sspi->base + SPI_INT_STA_REG));
}
/* clear irq pending */
static void spi_clr_irq_pending(uint32_t pending_bit, sunxi_spi_t *sspi)
{
pending_bit &= SPI_INT_STA_MASK;
hal_writel(pending_bit, sspi->base + SPI_INT_STA_REG);
}
/* query txfifo bytes */
static uint32_t spi_query_txfifo(sunxi_spi_t *sspi)
{
uint32_t reg_val =
(SPI_FIFO_STA_TX_CNT & hal_readl(sspi->base + SPI_FIFO_STA_REG));
reg_val >>= SPI_TXCNT_BIT_POS;
return reg_val;
}
/* query rxfifo bytes */
static uint32_t spi_query_rxfifo(sunxi_spi_t *sspi)
{
uint32_t reg_val =
(SPI_FIFO_STA_RX_CNT & hal_readl(sspi->base + SPI_FIFO_STA_REG));
reg_val >>= SPI_RXCNT_BIT_POS;
return reg_val;
}
/* reset fifo */
static void spi_reset_fifo(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_FIFO_CTL_REG);
reg_val |= (SPI_FIFO_CTL_RX_RST | SPI_FIFO_CTL_TX_RST);
/* Set the trigger level of RxFIFO/TxFIFO. */
reg_val &= ~(SPI_FIFO_CTL_RX_LEVEL | SPI_FIFO_CTL_TX_LEVEL);
reg_val |= (0x20 << 16) | 0x20;
hal_writel(reg_val, sspi->base + SPI_FIFO_CTL_REG);
}
static void spi_set_rx_trig(uint32_t val, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_FIFO_CTL_REG);
reg_val &= ~SPI_FIFO_CTL_RX_LEVEL;
reg_val |= val & SPI_FIFO_CTL_RX_LEVEL;
hal_writel(reg_val, sspi->base + SPI_FIFO_CTL_REG);
}
static void spi_set_tx_trig(uint32_t val, sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_FIFO_CTL_REG);
reg_val &= ~SPI_FIFO_CTL_TX_LEVEL;
reg_val |= (val << 16) & SPI_FIFO_CTL_TX_LEVEL;
hal_writel(reg_val, sspi->base + SPI_FIFO_CTL_REG);
}
/* set transfer total length BC, transfer length TC and single transmit length
* STC */
static void spi_set_bc_tc_stc(uint32_t tx_len, uint32_t rx_len,
uint32_t stc_len, uint32_t dummy_cnt,
sunxi_spi_t *sspi)
{
uint32_t reg_val;
/* set MBC(0x30) = tx_len + rx_len + dummy_cnt */
reg_val = hal_readl(sspi->base + SPI_BURST_CNT_REG);
reg_val &= ~SPI_BC_CNT_MASK;
reg_val |= (SPI_BC_CNT_MASK & (rx_len + dummy_cnt));
hal_writel(reg_val, sspi->base + SPI_BURST_CNT_REG);
/* set MTC(0x34) = tx_len */
reg_val = hal_readl(sspi->base + SPI_TRANSMIT_CNT_REG);
reg_val &= ~SPI_TC_CNT_MASK;
reg_val |= (SPI_TC_CNT_MASK & tx_len);
hal_writel(reg_val, sspi->base + SPI_TRANSMIT_CNT_REG);
/* set BBC(0x38) = dummy cnt & single mode transmit counter */
reg_val = hal_readl(sspi->base + SPI_BCC_REG);
reg_val &= ~SPI_BCC_STC_MASK;
reg_val |= (SPI_BCC_STC_MASK & stc_len);
reg_val &= ~(0xf << 24);
reg_val |= (dummy_cnt << 24);
hal_writel(reg_val, sspi->base + SPI_BCC_REG);
}
/* set ss control */
static void spi_ss_ctrl(sunxi_spi_t *sspi, uint8_t on_off)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_TC_REG);
on_off &= 0x1;
if (on_off)
{
reg_val |= SPI_TC_SS_LEVEL;
}
else
{
reg_val &= ~SPI_TC_SS_LEVEL;
}
hal_writel(reg_val, sspi->base + SPI_TC_REG);
}
static void spi_disable_dual(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_BCC_REG);
reg_val &= ~SPI_BCC_DUAL_MODE;
hal_writel(reg_val, sspi->base + SPI_BCC_REG);
}
static void spi_enable_dual(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_BCC_REG);
reg_val &= ~SPI_BCC_QUAD_MODE;
reg_val |= SPI_BCC_DUAL_MODE;
hal_writel(reg_val, sspi->base + SPI_BCC_REG);
}
static void spi_disable_quad(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_BCC_REG);
reg_val &= ~SPI_BCC_QUAD_MODE;
hal_writel(reg_val, sspi->base + SPI_BCC_REG);
}
static void spi_enable_quad(sunxi_spi_t *sspi)
{
uint32_t reg_val = hal_readl(sspi->base + SPI_BCC_REG);
reg_val |= SPI_BCC_QUAD_MODE;
hal_writel(reg_val, sspi->base + SPI_BCC_REG);
}
static spi_master_status_t spi_mode_check(sunxi_spi_t *sspi)
{
uint32_t flags = 0;
if (sspi->mode_type != MODE_TYPE_NULL)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
/* full duplex */
if (sspi->transfer->tx_buf && sspi->transfer->rx_buf)
{
spi_set_bc_tc_stc(sspi->transfer->tx_len,
sspi->transfer->rx_len,
sspi->transfer->tx_single_len,
sspi->transfer->dummy_byte, sspi);
sspi->mode_type = FULL_DUPLEX_TX_RX;
if (sspi->transfer->rx_nbits == SPI_NBITS_QUAD)
{
spi_disable_dual(sspi);
spi_enable_quad(sspi);
SPI_INFO("[spi%d] Quad mode Full duplex tx rx\n",
sspi->port);
}
else if (sspi->transfer->rx_nbits == SPI_NBITS_DUAL)
{
spi_disable_quad(sspi);
spi_enable_dual(sspi);
SPI_INFO("[spi%d] Dual mode Full duplex tx rx\n",
sspi->port);
}
else
{
spi_disable_quad(sspi);
spi_disable_dual(sspi);
SPI_INFO("[spi%d] Single mode Full duplex tx rx\n",
sspi->port);
}
} /* half duplex transmit */
else if (sspi->transfer->tx_buf)
{
if (sspi->transfer->tx_nbits == SPI_NBITS_QUAD)
{
spi_disable_dual(sspi);
spi_enable_quad(sspi);
spi_set_bc_tc_stc(sspi->transfer->tx_len, sspi->transfer->tx_len,
sspi->transfer->tx_single_len,
sspi->transfer->dummy_byte, sspi);
sspi->mode_type = QUAD_HALF_DUPLEX_TX;
SPI_INFO("[spi%d] Quad mode Half duplex tx\n",
sspi->port);
}
else if (sspi->transfer->tx_nbits == SPI_NBITS_DUAL)
{
spi_disable_quad(sspi);
spi_enable_dual(sspi);
spi_set_bc_tc_stc(sspi->transfer->tx_len, sspi->transfer->tx_len,
sspi->transfer->tx_single_len,
sspi->transfer->dummy_byte, sspi);
sspi->mode_type = DUAL_HALF_DUPLEX_TX;
SPI_INFO("[spi%d] Dual mode Half duplex tx\n",
sspi->port);
}
else
{
spi_disable_quad(sspi);
spi_disable_dual(sspi);
spi_set_bc_tc_stc(sspi->transfer->tx_len, sspi->transfer->tx_len,
sspi->transfer->tx_len,
sspi->transfer->dummy_byte, sspi);
sspi->mode_type = SGLE_HALF_DUPLEX_TX;
SPI_INFO("[spi%d] Single mode Half duplex tx\n",
sspi->port);
}
} /* half duplex receive */
else if (sspi->transfer->rx_buf)
{
if (sspi->transfer->rx_nbits == SPI_NBITS_QUAD)
{
spi_disable_dual(sspi);
spi_enable_quad(sspi);
sspi->mode_type = QUAD_HALF_DUPLEX_RX;
SPI_INFO("[spi%d] Quad mode Half duplex rx\n",
sspi->port);
}
else if (sspi->transfer->rx_nbits == SPI_NBITS_DUAL)
{
spi_disable_quad(sspi);
spi_enable_dual(sspi);
sspi->mode_type = DUAL_HALF_DUPLEX_RX;
SPI_INFO("[spi%d] Dual mode Half duplex rx\n",
sspi->port);
}
else
{
spi_disable_quad(sspi);
spi_disable_dual(sspi);
sspi->mode_type = SGLE_HALF_DUPLEX_RX;
SPI_INFO("[spi%d] Single mode Half duplex rx\n",
sspi->port);
}
spi_set_bc_tc_stc(0, sspi->transfer->rx_len, 0,
sspi->transfer->dummy_byte, sspi);
}
return SPI_MASTER_OK;
}
static spi_master_status_t spi_cpu_write(sunxi_spi_t *sspi)
{
uint32_t flags = 0;
uint32_t len = sspi->transfer->tx_len;
const uint8_t *buf = sspi->transfer->tx_buf;
volatile int32_t poll_time;
#ifdef SPI_DATA_LEVEL
uint32_t i, j;
uint8_t dbuf[64], cnt = 0;
#endif
if (NULL == buf)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
#ifdef SPI_DUMPREG_LEVEL
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
#endif
#ifdef SPI_DATA_LEVEL
SPI_INFO("tx_len = %d\n", len);
for (i = 0; i < len; i += 16)
{
cnt = 0;
cnt += sprintf(dbuf + cnt, "%04x: ", i);
for (j = 0; ((i + j) < len) && (j < 16); j++)
cnt += sprintf(dbuf + cnt, "%02x ",
((uint8_t *)(buf))[i + j]);
printf("%s\n", dbuf);
}
#endif
for (; len > 0; --len)
{
poll_time = 0xFFFFFF;
while ((spi_query_txfifo(sspi) >= MAX_FIFU) && poll_time--)
;
if (poll_time <= 0)
{
SPI_ERR("[spi%d] cpu transfer data time out!\n",
sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
return SPI_MASTER_ERROR_TIMEOUT;
}
hal_writeb(*buf++, sspi->base + SPI_TXDATA_REG);
}
return SPI_MASTER_OK;
}
static spi_master_status_t spi_cpu_read(sunxi_spi_t *sspi)
{
uint32_t flags = 0;
uint32_t len = sspi->transfer->rx_len;
uint8_t *buf = sspi->transfer->rx_buf;
volatile int32_t poll_time;
uint32_t n;
#ifdef SPI_DATA_LEVEL
uint32_t i, j;
uint8_t dbuf[64], cnt = 0;
#endif
if (NULL == buf)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
#ifdef SPI_DUMPREG_LEVEL
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
#endif
for (n = 0; n < len; n++)
{
poll_time = 0xFFFFFF;
while (!spi_query_rxfifo(sspi) && poll_time--)
{
}
if (poll_time <= 0)
{
SPI_ERR("[spi%d] cpu receive data time out!\n",
sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
return SPI_MASTER_ERROR_TIMEOUT;
}
*(buf + n) = hal_readb(sspi->base + SPI_RXDATA_REG);
}
#ifdef SPI_DATA_LEVEL
SPI_INFO("rx_len = %d\n", len);
for (i = 0; i < len; i += 16)
{
cnt = 0;
cnt += sprintf(dbuf + cnt, "%04x: ", i);
for (j = 0; ((i + j) < len) && (j < 16); j++)
cnt += sprintf(dbuf + cnt, "%02x ",
((uint8_t *)(buf))[i + j]);
printf("%s\n", dbuf);
}
#endif
return SPI_MASTER_OK;
}
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
static spi_master_status_t spi_dma_tx_config(struct sunxi_spi *sspi)
{
hal_dma_chan_status_t ret;
uint32_t flags = 0;
uint32_t len = sspi->transfer->tx_len;
uint8_t const *buf = sspi->transfer->tx_buf;
struct dma_slave_config *config = &sspi->dma_tx.config;
#ifdef SPI_DATA_LEVEL
unsigned int i, j;
u8 dbuf[64], cnt = 0;
#endif
if (NULL == buf)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
if (len <= ALIGN_DMA_BUF_SIZE)
{
memcpy(sspi->align_dma_buf, buf, len);
buf = sspi->align_dma_buf;
}
else
{
SPI_ERR("[spi%d] tx size over dma align buf size\n",
sspi->port);
/* buffer on DMA must align to cache line */
if ((unsigned long)buf & (64 - 1) || len & (64 - 1))
{
SPI_ERR("[spi%d] tx buf or len not align to 64\n",
sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
}
hal_dcache_clean((unsigned long)buf, SPI_ALIGN(len, 64));
#ifdef SPI_DATA_LEVEL
SPI_INFO("tx_len = %d\n", len);
for (i = 0; i < len; i += 16)
{
cnt = 0;
cnt += sprintf(dbuf + cnt, "%03x: ", i);
for (j = 0; ((i + j) < len) && (j < 16); j++)
cnt += sprintf(dbuf + cnt, "%02x ",
((uint8_t *)(buf))[i + j]);
printf("%s\n", dbuf);
}
#endif
ret = hal_dma_chan_request(&sspi->dma_tx.chan);
if (ret == HAL_DMA_CHAN_STATUS_BUSY)
{
SPI_ERR("[spi%d] request dma_rx failed\n", sspi->port);
return SPI_MASTER_ERROR;
}
spi_set_tx_trig(0x20, sspi);
spi_enable_dma_irq(SPI_FIFO_CTL_TX_DRQEN, sspi);
#ifdef SPI_DUMPREG_LEVEL
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
#endif
config->direction = DMA_MEM_TO_DEV;
config->dst_addr = sspi->base + SPI_TXDATA_REG;
config->src_addr = (unsigned long)buf;
if (len % DMA_SLAVE_BUSWIDTH_4_BYTES)
{
config->src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
config->dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
config->dst_maxburst = DMA_SLAVE_BURST_16;
config->src_maxburst = DMA_SLAVE_BURST_16;
}
else
{
config->src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
config->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
config->dst_maxburst = DMA_SLAVE_BURST_8;
config->src_maxburst = DMA_SLAVE_BURST_8;
}
config->slave_id =
sunxi_slave_id(SUNXI_SPI_DRQ_TX(sspi->port), DRQSRC_SDRAM);
SPI_INFO("[spi%d] config:\n"
" direction: %d\n"
" src_addr: 0x%08lx,"
" dst_addr: 0x%08lx\n"
" src_addr_width: %d,"
" dst_addr_width: %d\n"
" src_maxburst: %lu,"
" dst_maxburst: %lu\n"
" slave_id: 0x%08lx\n",
sspi->port, config->direction, config->src_addr,
config->dst_addr, config->src_addr_width,
config->dst_addr_width, config->src_maxburst,
config->dst_maxburst, config->slave_id);
return SPI_MASTER_OK;
}
#ifdef SPI_INFO_LEVEL
static void spi_dma_tx_callback(void *para)
{
sunxi_spi_t *sspi = (sunxi_spi_t *)para;
SPI_INFO("[spi%d] DMA TX callback function\n", sspi->port);
}
#endif
static spi_master_status_t spi_dma_tx_submit(struct sunxi_spi *sspi)
{
hal_dma_status_t ret;
uint32_t len = sspi->transfer->tx_len;
struct dma_slave_config *config = &sspi->dma_tx.config;
struct sunxi_dma_chan *chan = sspi->dma_tx.chan;
ret = hal_dma_slave_config(chan, config);
if (ret)
{
SPI_ERR("[spi%d] dma slave config failed! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
ret = hal_dma_prep_device(chan, config->dst_addr, config->src_addr, len,
config->direction);
if (ret)
{
SPI_ERR("[spi%d] dma prep device failed! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
#ifdef SPI_INFO_LEVEL
chan->callback = spi_dma_tx_callback;
chan->callback_param = sspi;
#endif
ret = hal_dma_start(chan);
if (ret)
{
SPI_ERR("[spi%d] dma start error! return %d\n", sspi->port,
ret);
return SPI_MASTER_ERROR;
}
return SPI_MASTER_OK;
}
static void spi_dma_rx_callback(void *para)
{
sunxi_spi_t *sspi = (sunxi_spi_t *)para;
if (hal_sem_post(sspi->xSemaphore_rx))
{
SPI_ERR("[spi%d] xSemaphoreGive failed.\n", sspi->port);
}
}
static spi_master_status_t spi_dma_rx_config(struct sunxi_spi *sspi)
{
hal_dma_chan_status_t ret;
uint32_t flags = 0;
uint32_t len = sspi->transfer->rx_len, size = 0;
uint8_t *buf = sspi->transfer->rx_buf;
struct dma_slave_config *config = &sspi->dma_rx.config;
if (NULL == buf)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
if (len <= ALIGN_DMA_BUF_SIZE)
{
buf = sspi->align_dma_buf;
memset(buf, 0, ALIGN_DMA_BUF_SIZE);
}
else
{
SPI_ERR("[spi%d] rx size over dma align buf size\n",
sspi->port);
/* buffer on DMA must align to cache line */
if ((unsigned long)buf & (64 - 1) || len & (64 - 1))
{
SPI_ERR("[spi%d] rx buf or len not align to 64\n",
sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
}
hal_dcache_clean_invalidate((unsigned long)buf, SPI_ALIGN(len, 64));
spi_enable_dma_irq(SPI_FIFO_CTL_RX_DRQEN, sspi);
#ifdef SPI_DUMPREG_LEVEL
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
#endif
ret = hal_dma_chan_request(&sspi->dma_rx.chan);
if (ret == HAL_DMA_CHAN_STATUS_BUSY)
{
SPI_ERR("[spi%d] request dma_rx failed\n", sspi->port);
return SPI_MASTER_ERROR;
}
config->direction = DMA_DEV_TO_MEM;
config->dst_addr = (unsigned long)buf;
config->src_addr = sspi->base + SPI_RXDATA_REG;
if (len % DMA_SLAVE_BUSWIDTH_4_BYTES)
{
config->src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
config->dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
config->dst_maxburst = DMA_SLAVE_BURST_16;
config->src_maxburst = DMA_SLAVE_BURST_16;
}
else
{
config->src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
config->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
config->dst_maxburst = DMA_SLAVE_BURST_8;
config->src_maxburst = DMA_SLAVE_BURST_8;
}
config->slave_id =
sunxi_slave_id(DRQDST_SDRAM, SUNXI_SPI_DRQ_RX(sspi->port));
SPI_INFO("[spi%d] config:\n"
" direction: %d\n"
" src_addr: 0x%08lx,"
" dst_addr: 0x%08lx\n"
" src_addr_width: %d,"
" dst_addr_width: %d\n"
" src_maxburst: %lu,"
" dst_maxburst: %lu\n"
" slave_id: 0x%08lx\n",
sspi->port, config->direction, config->src_addr,
config->dst_addr, config->src_addr_width,
config->dst_addr_width, config->src_maxburst,
config->dst_maxburst, config->slave_id);
return SPI_MASTER_OK;
}
static spi_master_status_t spi_dma_rx_submit(struct sunxi_spi *sspi)
{
hal_dma_status_t ret;
uint32_t flags = 0;
uint32_t len = sspi->transfer->rx_len, size = 0;
struct sunxi_dma_chan *chan = sspi->dma_rx.chan;
struct dma_slave_config *config = &sspi->dma_rx.config;
ret = hal_dma_slave_config(chan, config);
if (ret)
{
SPI_ERR("[spi%d] dma slave config failed! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
ret = hal_dma_prep_device(chan, config->dst_addr, config->src_addr, len,
config->direction);
if (ret)
{
SPI_ERR("[spi%d] dma prep device failed! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
chan->callback = spi_dma_rx_callback;
chan->callback_param = sspi;
ret = hal_dma_start(chan);
if (ret)
{
SPI_ERR("[spi%d] dma start error! return %d\n", sspi->port,
ret);
return SPI_MASTER_ERROR;
}
return SPI_MASTER_OK;
}
#endif
static spi_master_status_t spi_transfer(sunxi_spi_t *sspi)
{
spi_config_dhb(sspi, 1);
switch (sspi->mode_type)
{
case SGLE_HALF_DUPLEX_RX:
case DUAL_HALF_DUPLEX_RX:
case QUAD_HALF_DUPLEX_RX:
{
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
/* >64 use DMA transfer, or use cpu */
if (sspi->transfer->rx_len > BULK_DATA_BOUNDARY)
{
SPI_INFO("[spi%d] rx by dma\n", sspi->port);
/* For Rx mode, the DMA end(not TC flag) is real end. */
spi_disable_irq(SPI_INTEN_TC, sspi);
if (spi_dma_rx_config(sspi))
{
return SPI_MASTER_ERROR;
}
if (spi_dma_rx_submit(sspi))
{
return SPI_MASTER_ERROR;
}
spi_start_xfer(sspi);
}
else
{
#endif
SPI_INFO("[spi%d] rx by cpu\n", sspi->port);
spi_clr_irq_pending(SPI_INT_STA_MASK, sspi);
spi_start_xfer(sspi);
spi_cpu_read(sspi);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
}
#endif
break;
}
case SGLE_HALF_DUPLEX_TX:
case DUAL_HALF_DUPLEX_TX:
case QUAD_HALF_DUPLEX_TX:
{
spi_config_dhb(sspi, 0);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
/* >64 use DMA transfer, or use cpu */
if (sspi->transfer->tx_len > BULK_DATA_BOUNDARY)
{
SPI_INFO("[spi%d] tx by dma\n", sspi->port);
sspi->sem = 1;
spi_start_xfer(sspi);
if (spi_dma_tx_config(sspi))
{
return SPI_MASTER_ERROR;
}
if (spi_dma_tx_submit(sspi))
{
return SPI_MASTER_ERROR;
}
}
else
{
#endif
SPI_INFO("[spi%d] tx by cpu\n", sspi->port);
spi_start_xfer(sspi);
spi_cpu_write(sspi);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
}
#endif
break;
}
case FULL_DUPLEX_TX_RX:
{
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
/* >64 use DMA transfer, or use cpu */
if (sspi->transfer->rx_len > BULK_DATA_BOUNDARY)
{
SPI_INFO("[spi%d] tx and rx by dma\n", sspi->port);
/* For Rx mode, the DMA end(not TC flag) is real end. */
spi_disable_irq(SPI_INTEN_TC, sspi);
spi_start_xfer(sspi);
if (spi_dma_rx_config(sspi))
{
return SPI_MASTER_ERROR;
}
if (spi_dma_rx_submit(sspi))
{
return SPI_MASTER_ERROR;
}
spi_cpu_write(sspi);
}
else
{
#endif
SPI_INFO("[spi%d] tx and rx by cpu\n", sspi->port);
spi_start_xfer(sspi);
spi_cpu_write(sspi);
spi_cpu_read(sspi);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
}
#endif
break;
}
default:
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
}
return SPI_MASTER_OK;
}
/* wake up the sleep thread, and give the result code */
static irqreturn_t spi_irq_handler(int irq, void *ptr)
{
uint32_t flags = 0;
uint32_t status = 0, enable = 0;
sunxi_spi_t *sspi = (sunxi_spi_t *)ptr;
enable = spi_qry_irq_enable(sspi);
status = spi_qry_irq_pending(sspi);
spi_clr_irq_pending(status, sspi);
sspi->result = SPI_XFER_OK;
/* master mode, Transfer Complete Interrupt */
if (status & SPI_INT_STA_TC)
{
SPI_INFO_IRQ("[spi%d] SPI TC COME\n", sspi->port);
spi_disable_irq(SPI_INT_STA_TC | SPI_INT_STA_ERR, sspi);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
if (sspi->sem)
{
sspi->sem = 0;
if (hal_sem_post(sspi->xSemaphore_tx))
SPI_INFO_IRQ("[spi%d] xSemaphorePostFromISR failed.\n",
sspi->port);
}
#endif
return 0;
}
else if (status & SPI_INT_STA_ERR) /* master mode:err */
{
SPI_INFO_IRQ("[spi%d] SPI ERR! status %#lx\n", sspi->port, status);
/* __log("[spi%d] dump reg:\n", sspi->port); */
/* spi_dump_reg(sspi, 0, 0x60); */
spi_disable_irq(SPI_INT_STA_TC | SPI_INT_STA_ERR, sspi);
sspi->result = SPI_XFER_FAILED;
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
if (sspi->sem)
{
sspi->sem = 0;
if (hal_sem_post(sspi->xSemaphore_tx))
SPI_INFO_IRQ("[spi%d] xSemaphorePostFromISR failed.\n",
sspi->port);
}
#endif
return 0;
}
return 0;
}
static spi_master_status_t spi_pinctrl_init(sunxi_spi_t *sspi)
{
#ifdef CONFIG_OS_MELIS
user_gpio_set_t gpio_cfg[6] = {0};
gpio_pin_t spi_pin[6];
gpio_muxsel_t spi_muxsel[6];
int count, i;
char spi_name[16];
int ret = SPI_MASTER_OK;
if (sspi->port >= HAL_SPI_MASTER_MAX)
{
SPI_ERR("[spi%d] invalid port\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
sprintf(spi_name, "spi%d", sspi->port);
count = Hal_Cfg_GetGPIOSecKeyCount(spi_name);
if (!count)
{
SPI_ERR("[spi%d] not support in sys_config\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
Hal_Cfg_GetGPIOSecData(spi_name, gpio_cfg, count);
for (i = 0; i < count; i++)
{
spi_pin[i] = (gpio_cfg[i].port - 1) * 32 + gpio_cfg[i].port_num;
spi_muxsel[i] = gpio_cfg[i].mul_sel;
ret = hal_gpio_pinmux_set_function(spi_pin[i], spi_muxsel[i]);
if (ret)
{
SPI_ERR("[spi%d] PIN%u set function failed! return %d\n",
sspi->port, spi_pin[i], ret);
return SPI_MASTER_ERROR;
}
ret = hal_gpio_set_driving_level(spi_pin[i], gpio_cfg[i].drv_level);
if (ret)
{
SPI_ERR("[spi%d] PIN%u set driving level failed! return %d\n",
sspi->port, gpio_cfg[i].drv_level, ret);
return SPI_MASTER_ERROR;
}
if (gpio_cfg[i].pull)
{
ret = hal_gpio_set_pull(spi_pin[i], gpio_cfg[i].pull);
}
}
return ret;
#else
SPI_ERR("[spi%d] not support sys_config format\n", sspi->port);
#endif
}
static spi_master_status_t spi_clk_init(sunxi_spi_t *sspi, u32 mode_clk)
{
unsigned long rate;
hal_clk_status_t ret;
hal_reset_type_t reset_type = HAL_SUNXI_RESET;
u32 reset_id;
hal_clk_type_t clk_type = HAL_SUNXI_CCU;
hal_clk_id_t clk_id;
hal_clk_id_t clk_bus_id;
/* hal_clk_t clk; */
switch (sspi->port)
{
case 0:
clk_id = SUNXI_CLK_SPI(0);
clk_bus_id = SUNXI_CLK_BUS_SPI(0);
reset_id = SUNXI_CLK_RST_SPI(0);
break;
case 1:
clk_id = SUNXI_CLK_SPI(1);
clk_bus_id = SUNXI_CLK_BUS_SPI(1);
reset_id = SUNXI_CLK_RST_SPI(1);
break;
case 2:
clk_id = SUNXI_CLK_SPI(2);
clk_bus_id = SUNXI_CLK_BUS_SPI(2);
reset_id = SUNXI_CLK_RST_SPI(2);
break;
default:
SPI_ERR("spi%d is invalid\n", sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
sspi->reset = hal_reset_control_get(reset_type, reset_id);
hal_reset_control_deassert(sspi->reset);
sspi->mclk = hal_clock_get(clk_type, clk_id);
sspi->bus_clk = hal_clock_get(clk_type, clk_bus_id);
sspi->pclk = hal_clock_get(clk_type, SUNXI_CLK_PLL_SPI);
ret = hal_clk_set_parent(sspi->mclk, sspi->pclk);
if (ret)
{
SPI_ERR("[spi%d] clk set parent failed! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
rate = mode_clk;
/* rate = hal_clk_round_rate(sspi->mclk, mode_clk); */
/* if (!rate) */
/* { */
/* SPI_ERR("[spi%d] clk round rate failed! return %ld\n", */
/* sspi->port, rate); */
/* return SPI_MASTER_ERROR; */
/* } */
ret = hal_clk_set_rate(sspi->mclk, rate);
if (ret)
{
SPI_ERR("[spi%d] clk set rate failed! return %d\n", sspi->port,
ret);
return SPI_MASTER_ERROR;
}
rate = hal_clk_get_rate(sspi->mclk);
if (!rate)
{
SPI_ERR("[spi%d] clk get rate failed! return %ld\n", sspi->port,
rate);
return SPI_MASTER_ERROR;
}
ret = hal_clock_enable(sspi->bus_clk);
ret = hal_clock_enable(sspi->mclk);
if (ret)
{
SPI_ERR("[spi%d] couldn't enable mlck! return %d\n", sspi->port,
ret);
return SPI_MASTER_ERROR;
}
return SPI_MASTER_OK;
}
static spi_master_status_t spi_clk_exit(sunxi_spi_t *sspi)
{
hal_clk_status_t ret;
ret = hal_clock_disable(sspi->mclk);
ret = hal_clock_disable(sspi->bus_clk);
if (ret)
{
SPI_ERR("[spi%d] couldn't disable mlck! return %d\n",
sspi->port, ret);
return SPI_MASTER_ERROR;
}
hal_clock_put(sspi->mclk);
hal_clock_put(sspi->bus_clk);
hal_reset_control_assert(sspi->reset);
hal_reset_control_put(sspi->reset);
return SPI_MASTER_OK;
}
static spi_master_status_t spi_cpu_complete(sunxi_spi_t *sspi)
{
uint32_t timeout = 0xffff;
while (!sspi->result && timeout--)
;
if (timeout <= 0)
{
SPI_ERR("[spi%d] xfer timeout\n", sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
return SPI_MASTER_ERROR_TIMEOUT;
}
else if (SPI_XFER_FAILED == sspi->result)
{
SPI_ERR("[spi%d] xfer failed...\n", sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
return SPI_MASTER_ERROR;
}
return SPI_MASTER_OK;
}
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
static spi_master_status_t spi_dma_tx_complete(sunxi_spi_t *sspi)
{
uint32_t flags = 0;
uint32_t timeout = 0x7fffffff;
struct sunxi_dma_chan *chan = sspi->dma_tx.chan;
hal_dma_status_t dma_ret;
spi_master_status_t ret = 0;
int xResult;
xResult = hal_sem_timedwait(sspi->xSemaphore_tx, 100); //100*10ms
if (xResult == 0)
{
if (SPI_XFER_OK == sspi->result)
{
SPI_INFO("ok\n");
ret = SPI_MASTER_OK;
}
else if (SPI_XFER_FAILED == sspi->result)
{
SPI_ERR("[spi%d] xfer failed...\n", sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
ret = SPI_MASTER_ERROR;
}
}
else
{
SPI_ERR("[spi%d] dma xfer timeout\n", sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x60);
sspi->result = SPI_XFER_FAILED;
if (hal_sem_post(sspi->xSemaphore_tx))
{
SPI_ERR("[spi%d] xSemaphoreGive failed.\n", sspi->port);
}
ret = SPI_MASTER_ERROR_TIMEOUT;
}
end:
dma_ret = hal_dma_stop(chan);
if (dma_ret)
{
SPI_ERR("[spi%d] dma stop error! ret %d\n", sspi->port,
dma_ret);
return SPI_MASTER_ERROR;
}
dma_ret = hal_dma_chan_free(chan);
if (dma_ret)
{
SPI_ERR("[spi%d] free dma_tx failed, ret %d\n", sspi->port,
dma_ret);
return SPI_MASTER_ERROR;
}
return ret;
}
static spi_master_status_t spi_dma_rx_complete(sunxi_spi_t *sspi)
{
uint32_t flags = 0;
uint32_t len = sspi->transfer->rx_len, size = 0;
uint8_t *buf = sspi->transfer->rx_buf;
struct sunxi_dma_chan *chan = sspi->dma_rx.chan;
hal_dma_status_t dma_ret;
spi_master_status_t ret;
int xResult;
#ifdef SPI_DATA_LEVEL
unsigned int i, j;
u8 dbuf[64], cnt = 0;
#endif
xResult = hal_sem_timedwait(sspi->xSemaphore_rx, 1000); //100*10ms
if (xResult != 0)
{
rt_kprintf("[spi%d] dma rx timeout\n", sspi->port);
SPI_INFO("[spi%d] dump reg:\n", sspi->port);
spi_dump_reg(sspi, 0, 0x40);
sspi->result = SPI_XFER_FAILED;
ret = SPI_MASTER_ERROR_TIMEOUT;
goto end;
}
hal_dcache_invalidate((unsigned long)sspi->align_dma_buf, SPI_ALIGN(len, 64));
sspi->result = SPI_XFER_OK;
if (len <= ALIGN_DMA_BUF_SIZE)
{
memcpy(buf, sspi->align_dma_buf, len);
}
ret = SPI_MASTER_OK;
SPI_INFO("ok\n");
#ifdef SPI_DATA_LEVEL
SPI_INFO("rx_len = %d\n", len);
for (i = 0; i < len; i += 16)
{
cnt = 0;
cnt += sprintf(dbuf + cnt, "%03x: ", i);
for (j = 0; ((i + j) < len) && (j < 16); j++)
cnt += sprintf(dbuf + cnt, "%02x ",
((uint8_t *)(buf))[i + j]);
printf("%s\n", dbuf);
}
#endif
end:
spi_disable_irq(SPI_INT_STA_TC | SPI_INT_STA_ERR, sspi);
dma_ret = hal_dma_stop(chan);
if (dma_ret)
{
SPI_ERR("[spi%d] dma stop error! ret %d\n", sspi->port,
dma_ret);
ret = SPI_MASTER_ERROR;
}
dma_ret = hal_dma_chan_free(chan);
if (dma_ret)
{
SPI_ERR("[spi%d] free dma_rx failed, ret %d\n", sspi->port,
dma_ret);
return SPI_MASTER_ERROR;
}
return ret;
}
#endif
/*
* < 64 : cpu ; >= 64 : dma
* wait for done completion in this function, wakup in the irq hanlder
*/
spi_master_status_t hal_spi_xfer(hal_spi_master_port_t port,
hal_spi_master_transfer_t *transfer)
{
uint32_t flags = 0;
spi_master_status_t ret = 0;
sunxi_spi_t *sspi = &g_sunxi_spi[port];
if (NULL == transfer)
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
ret = SPI_MASTER_INVALID_PARAMETER;
goto end;
}
SPI_INFO("[spi%d] tl=%lu rl=%lu, tsl=%lu\n", sspi->port, transfer->tx_len,
transfer->rx_len, transfer->tx_single_len);
if ((!transfer->tx_buf && !transfer->rx_buf) ||
(!transfer->tx_len && !transfer->rx_buf))
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
ret = SPI_MASTER_INVALID_PARAMETER;
goto end;
}
sspi->result = SPI_XFER_READY;
sspi->transfer = transfer;
if (spi_mode_check(sspi))
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
ret = SPI_MASTER_INVALID_PARAMETER;
goto end;
}
spi_clr_irq_pending(SPI_INT_STA_MASK, sspi);
spi_disable_dma_irq(SPI_FIFO_CTL_DRQEN_MASK, sspi);
spi_reset_fifo(sspi);
spi_enable_irq(SPI_INTEN_TC | SPI_INTEN_ERR, sspi);
// cpu_dcache_clean_all();
if (spi_transfer(sspi))
{
ret = SPI_MASTER_ERROR;
goto end;
}
switch (sspi->mode_type)
{
case SGLE_HALF_DUPLEX_RX:
case DUAL_HALF_DUPLEX_RX:
case QUAD_HALF_DUPLEX_RX:
case FULL_DUPLEX_TX_RX:
{
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
/* >64 use DMA transfer, or use cpu */
if (sspi->transfer->rx_len > BULK_DATA_BOUNDARY)
{
if (spi_dma_rx_complete(sspi))
{
ret = SPI_MASTER_ERROR;
goto end;
}
}
else
{
#endif
if (spi_cpu_complete(sspi))
{
ret = SPI_MASTER_ERROR;
goto end;
}
else
{
ret = SPI_MASTER_OK;
}
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
}
#endif
break;
}
case SGLE_HALF_DUPLEX_TX:
case DUAL_HALF_DUPLEX_TX:
case QUAD_HALF_DUPLEX_TX:
{
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
/* >64 use DMA transfer, or use cpu */
if (sspi->transfer->tx_len > BULK_DATA_BOUNDARY)
{
if (spi_dma_tx_complete(sspi))
{
ret = SPI_MASTER_ERROR;
goto end;
}
}
else
{
#endif
if (spi_cpu_complete(sspi))
{
ret = SPI_MASTER_ERROR;
goto end;
}
else
{
ret = SPI_MASTER_OK;
}
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
}
#endif
break;
}
default:
{
SPI_ERR("[spi%d] invalid parameter\n", sspi->port);
ret = SPI_MASTER_INVALID_PARAMETER;
}
}
end:
if (sspi->mode_type != MODE_TYPE_NULL)
{
sspi->mode_type = MODE_TYPE_NULL;
}
return ret;
}
static int sunxi_get_spic_clk(sunxi_spi_t *sspi)
{
unsigned long rate;
rate = hal_clk_get_rate(sspi->mclk);
if (!rate)
SPI_ERR("[spi%d] clk get rate failed! return %ld\n", sspi->port, rate);
return rate;
}
/* legacy interface*/
static void spi_set_clk(u32 spi_clk, u32 ahb_clk, unsigned long base_addr, u32 cdr)
{
u32 reg_val = 0;
u32 div_clk = 0;
SPI_INFO("set spi clock %ld, mclk %ld\n", spi_clk, ahb_clk);
reg_val = hal_readl(base_addr + SPI_CLK_CTL_REG);
/* CDR2 */
if (cdr)
{
div_clk = ahb_clk / (spi_clk * 2) - 1;
reg_val &= ~SPI_CLK_CTL_CDR2;
reg_val |= (div_clk | SPI_CLK_CTL_DRS);
SPI_INFO("CDR2 - n = %ld\n", div_clk);
}
else /* CDR1 */
{
while (ahb_clk > spi_clk)
{
div_clk++;
ahb_clk >>= 1;
}
reg_val &= ~(SPI_CLK_CTL_CDR1 | SPI_CLK_CTL_DRS);
reg_val |= (div_clk << 8);
SPI_INFO("CDR1 - n = %ld\n", div_clk);
}
hal_writel(reg_val, base_addr + SPI_CLK_CTL_REG);
}
spi_master_status_t hal_spi_hw_config(hal_spi_master_port_t port, hal_spi_master_config_t *spi_config)
{
int sclk_freq = 0;
unsigned long clock_frequency;
sunxi_spi_t *sspi = &g_sunxi_spi[port];
uint32_t config = 0;
if (NULL == spi_config)
{
SPI_ERR("[spi%d] invalid parameter\n", port);
return SPI_MASTER_INVALID_PARAMETER;
}
sspi->base = g_sunxi_spi_params[port].reg_base;
sspi->port = port;
sspi->mode_type = MODE_TYPE_NULL;
if (spi_config->clock_frequency)
clock_frequency = spi_config->clock_frequency;
else
clock_frequency = SPI_MOD_CLK;
if (clock_frequency > SPI_MAX_FREQUENCY)
{
SPI_ERR("[spi%d] invalid parameter! max_frequency is 100MHZ\n",
sspi->port);
}
else
{
SPI_INIT("[spi%d] clock_frequency = %ldHZ\n", sspi->port,
clock_frequency);
}
if (clock_frequency >= SPI_HIGH_FREQUENCY)
{
spi_sample_delay(0, 1, sspi);
}
else if (clock_frequency <= SPI_LOW_FREQUENCY)
{
spi_sample_delay(1, 0, sspi);
}
else
{
spi_sample_delay(0, 0, sspi);
}
spi_soft_reset(sspi);
sclk_freq = sunxi_get_spic_clk(sspi);
if (!sclk_freq)
{
SPI_INFO("spi clk error ! \n");
}
else if (sclk_freq != clock_frequency)
{
spi_clk_exit(sspi);
if (spi_clk_init(sspi, clock_frequency))
{
SPI_ERR("[spi%d] init clk error\n", sspi->port);
return SPI_MASTER_ERROR;
}
}
//spi_set_clk(clock_frequency, sclk_freq, sspi->base, 0);
if (spi_config->slave_port)
{
SPI_ERR("[spi%d] software control cs isn't support \n",
sspi->port);
return SPI_MASTER_INVALID_PARAMETER;
}
else
{
spi_set_cs(spi_config->slave_port, sspi);
}
if (spi_config->bit_order)
{
config |= SPI_LSB_FIRST_ACTIVE_;
// spi_config_tc(SPI_LSB_FIRST_ACTIVE_, sspi);
}
config |= (spi_config->cpol) | (spi_config->cpha);
spi_config_tc(config, sspi);
spi_enable_bus(sspi);
spi_set_master(sspi);
spi_enable_tp(sspi);
/*spi controller sends ss signal automatically*/
spi_ss_owner(sspi, spi_config->csmode);
/* reset fifo */
spi_reset_fifo(sspi);
return SPI_MASTER_OK;
}
spi_master_status_t hal_spi_init(hal_spi_master_port_t port,
hal_spi_master_config_t *cfg)
{
sunxi_spi_t *sspi = &g_sunxi_spi[port];
if (port >= HAL_SPI_MASTER_MAX)
{
SPI_ERR("[spi%d] invalid port\n", sspi->port);
return SPI_MASTER_ERROR;
}
sspi->base = g_sunxi_spi_params[port].reg_base;
sspi->irqnum = g_sunxi_spi_params[port].irq_num;
sspi->port = port;
sspi->mode_type = MODE_TYPE_NULL;
SPI_INFO("spi[%d] init ,reg base is %lx \n", port, sspi->base);
if (request_irq(sspi->irqnum, spi_irq_handler, 0, "spi-ctl", sspi) < 0)
{
SPI_ERR("[spi%d] request irq error\n", sspi->port);
return SPI_MASTER_ERROR;
}
enable_irq(sspi->irqnum);
if (spi_pinctrl_init(sspi))
{
SPI_ERR("[spi%d] init pinctrl error\n", sspi->port);
return SPI_MASTER_ERROR;
}
if (spi_clk_init(sspi, SPI_MAX_FREQUENCY))
{
SPI_ERR("[spi%d] init clk error\n", sspi->port);
return SPI_MASTER_ERROR;
}
spi_soft_reset(sspi);
hal_spi_hw_config(port, cfg);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
sspi->xSemaphore_tx = hal_sem_create(0);
if (sspi->xSemaphore_tx == NULL)
{
SPI_ERR("[spi%d] creating semaphore_tx failed.\n", sspi->port);
return SPI_MASTER_ERROR;
}
sspi->xSemaphore_rx = hal_sem_create(0);
if (sspi->xSemaphore_rx == NULL)
{
SPI_ERR("[spi%d] creating semaphore_rx failed.\n", sspi->port);
return SPI_MASTER_ERROR;
}
sspi->align_dma_buf = dma_alloc_coherent(ALIGN_DMA_BUF_SIZE);
if (!sspi->align_dma_buf)
{
SPI_ERR("[spi%d] alloc memory failed\n", sspi->port);
return SPI_MASTER_ERROR_NOMEM;
}
SPI_INIT("[spi%d] DMA xfer enable\n", sspi->port);
#else
SPI_INIT("[spi%d] CPU xfer only\n", sspi->port);
#endif
return SPI_MASTER_OK;
}
spi_master_status_t hal_spi_deinit(hal_spi_master_port_t port)
{
uint8_t i;
sunxi_spi_t *sspi = &g_sunxi_spi[port];
spi_disable_bus(sspi);
disable_irq(sspi->irqnum);
#ifndef CONFIG_SUNXI_SPI_CPU_XFER_ONLY
dma_free_coherent(sspi->align_dma_buf);
hal_sem_delete(sspi->xSemaphore_tx);
hal_sem_delete(sspi->xSemaphore_rx);
#endif
if (spi_clk_exit(sspi))
{
SPI_ERR("[spi%d] exit clk error\n", sspi->port);
return SPI_MASTER_ERROR;
}
free_irq(sspi->irqnum, sspi);
return SPI_MASTER_OK;
}
spi_master_status_t hal_spi_write(hal_spi_master_port_t port,
const void *buf, uint32_t size)
{
spi_master_status_t ret;
hal_spi_master_transfer_t tr;
tr.tx_buf = buf;
tr.tx_len = size;
tr.rx_buf = NULL;
tr.rx_len = 0;
tr.dummy_byte = 0;
tr.tx_single_len = size;
tr.tx_nbits = SPI_NBITS_SINGLE;
SPI_INFO("spi[%d] write data,len is %ld \n", port, size);
ret = hal_spi_xfer(port, &tr);
return ret;
}
spi_master_status_t hal_spi_read(hal_spi_master_port_t port,
void *buf, uint32_t size)
{
spi_master_status_t ret;
hal_spi_master_transfer_t tr;
tr.rx_buf = buf;
tr.rx_len = size;
tr.tx_buf = NULL;
tr.tx_len = 0;
tr.dummy_byte = 0;
tr.tx_single_len = size;
tr.rx_nbits = SPI_NBITS_SINGLE;
SPI_INFO("spi[%d] read data,len is %ld \n", port, size);
ret = hal_spi_xfer(port, &tr);
return ret;
}
void hal_spi_cs(hal_spi_master_port_t port, uint8_t on_off)
{
sunxi_spi_t *sspi = &g_sunxi_spi[port];
spi_ss_ctrl(sspi, on_off);
}