diff options
Diffstat (limited to 'chip/mchp/spi.c')
| -rw-r--r-- | chip/mchp/spi.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/chip/mchp/spi.c b/chip/mchp/spi.c deleted file mode 100644 index 48712e8b7e..0000000000 --- a/chip/mchp/spi.c +++ /dev/null @@ -1,294 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* QMSPI master module for MCHP MEC family */ - -#include "common.h" -#include "console.h" -#include "dma.h" -#include "gpio.h" -#include "registers.h" -#include "spi.h" -#include "timer.h" -#include "util.h" -#include "hooks.h" -#include "task.h" -#include "spi_chip.h" -#include "qmspi_chip.h" -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) -#include "gpspi_chip.h" -#endif -#include "tfdp_chip.h" - -#define CPUTS(outstr) cputs(CC_SPI, outstr) -#define CPRINTS(format, args...) cprints(CC_SPI, format, ## args) - -#define SPI_BYTE_TRANSFER_TIMEOUT_US (3 * MSEC) -#define SPI_BYTE_TRANSFER_POLL_INTERVAL_US 100 - -#if defined(CONFIG_MCHP_GPSPI) && defined(CHIP_FAMILY_MEC152X) -#error "FORCED BUILD ERROR: MEC152X does not implement GPSPI!" -#endif - -static const struct dma_option spi_rx_option[] = { - { - MCHP_DMAC_QMSPI0_RX, - (void *)(MCHP_QMSPI0_RX_FIFO_ADDR), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) -#if CONFIG_MCHP_GPSPI & 0x01 - { - MCHP_DMAC_SPI0_RX, - (void *)&MCHP_SPI_RD(0), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#endif -#if CONFIG_MCHP_GPSPI & 0x02 - { - MCHP_DMAC_SPI1_RX, - (void *)&MCHP_SPI_RD(1), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#endif -#endif -}; - -static const struct dma_option spi_tx_option[] = { - { - MCHP_DMAC_QMSPI0_TX, - (void *)(MCHP_QMSPI0_TX_FIFO_ADDR), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) -#if CONFIG_MCHP_GPSPI & 0x01 - { - MCHP_DMAC_SPI0_TX, - (void *)&MCHP_SPI_TD(0), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#endif -#if CONFIG_MCHP_GPSPI & 0x02 - { - MCHP_DMAC_SPI1_TX, - (void *)&MCHP_SPI_TD(1), - MCHP_DMA_XFER_SIZE(1) + MCHP_DMA_INC_MEM - }, -#endif -#endif -}; - -/* only regular image needs mutex, LFW does not have scheduling */ -#ifndef LFW -static struct mutex spi_mutex[ARRAY_SIZE(spi_rx_option)]; - -/* - * Acquire mutex for specified SPI controller/port. - * Note if mutex is owned by another task this routine - * will block until mutex is released. - */ -static void spi_mutex_lock(uint8_t hw_port) -{ - uint32_t n; - - n = 0; -#ifdef CONFIG_MCHP_GPSPI - if (hw_port & 0xF0) { -#if (CONFIG_MCHP_GPSPI & 0x03) == 0x03 - n = (hw_port & 0x0F) + 1; -#else - n = 1; -#endif - } -#endif - mutex_lock(&spi_mutex[n]); -} - -/* - * Release mutex for specified SPI controller/port. - */ -static void spi_mutex_unlock(uint8_t hw_port) -{ - uint32_t n; - - n = 0; -#ifdef CONFIG_MCHP_GPSPI - if (hw_port & 0xF0) { -#if (CONFIG_MCHP_GPSPI & 0x03) == 0x03 - n = (hw_port & 0x0F) + 1; -#else - n = 1; -#endif - } -#endif - mutex_unlock(&spi_mutex[n]); -} -#endif /* #ifndef LFW */ - -/* - * Public SPI interface - */ - -const void *spi_dma_option(const struct spi_device_t *spi_device, - int is_tx) -{ - uint32_t n; - - if (spi_device == NULL) - return NULL; - - n = 0; -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) - if (spi_device->port & 0xF0) { -#if (CONFIG_MCHP_GPSPI & 0x03) == 0x03 - n = (spi_device->port & 0x0F) + 1; -#else - n = 1; -#endif - } -#endif - - if (is_tx) - return &spi_tx_option[n]; - else - return &spi_rx_option[n]; -} - -int spi_transaction_async(const struct spi_device_t *spi_device, - const uint8_t *txdata, int txlen, - uint8_t *rxdata, int rxlen) -{ - int rc; - - if (spi_device == NULL) - return EC_ERROR_INVAL; - - switch (spi_device->port) { -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) - case GPSPI0_PORT: - case GPSPI1_PORT: - rc = gpspi_transaction_async(spi_device, txdata, - txlen, rxdata, rxlen); - break; -#endif - case QMSPI0_PORT: - rc = qmspi_transaction_async(spi_device, txdata, - txlen, rxdata, rxlen); - break; - default: - rc = EC_ERROR_INVAL; - } - - return rc; -} - -int spi_transaction_flush(const struct spi_device_t *spi_device) -{ - int rc; - - if (spi_device == NULL) - return EC_ERROR_INVAL; - - switch (spi_device->port) { -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) - case GPSPI0_PORT: - case GPSPI1_PORT: - rc = gpspi_transaction_flush(spi_device); - break; -#endif - case QMSPI0_PORT: - rc = qmspi_transaction_flush(spi_device); - break; - default: - rc = EC_ERROR_INVAL; - } - - return rc; -} - -/* Wait for async response received but do not de-assert chip select */ -int spi_transaction_wait(const struct spi_device_t *spi_device) -{ - int rc; - - if (spi_device == NULL) - return EC_ERROR_INVAL; - - switch (spi_device->port) { -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) -#ifndef LFW - case GPSPI0_PORT: - case GPSPI1_PORT: - rc = gpspi_transaction_wait(spi_device); - break; -#endif -#endif - case QMSPI0_PORT: - rc = qmspi_transaction_wait(spi_device); - break; - default: - rc = EC_ERROR_INVAL; - } - - return rc; -} - -/* - * called from common/spi_flash.c - * For tranfers reading less than the size of QMSPI RX FIFO call - * a routine where reads use FIFO only no DMA. - * GP-SPI only has a one byte RX FIFO but small data transfers will be OK - * without the overhead of DMA setup. - */ -int spi_transaction(const struct spi_device_t *spi_device, - const uint8_t *txdata, int txlen, - uint8_t *rxdata, int rxlen) -{ - int rc; - - if (spi_device == NULL) - return EC_ERROR_PARAM1; - -#ifndef LFW - spi_mutex_lock(spi_device->port); -#endif - - rc = spi_transaction_async(spi_device, txdata, txlen, rxdata, rxlen); - if (rc == EC_SUCCESS) - rc = spi_transaction_flush(spi_device); - -#ifndef LFW - spi_mutex_unlock(spi_device->port); -#endif - - return rc; -} - -/** - * Enable SPI port and associated controller - * - * @param spi_device SPI device - * @param enable - * @return EC_SUCCESS or EC_ERROR_INVAL if port is unrecognized - * @note called from common/spi_flash.c - * - * spi_device->port is defined as - * bits[3:0] = controller instance - * bits[7:4] = controller family 0 = QMSPI, 1 = GPSPI - */ -int spi_enable(const struct spi_device_t *spi_device, int enable) -{ - int rc; - uint8_t hw_port = spi_device->port; - rc = EC_ERROR_INVAL; - - if ((hw_port & 0xF0) == QMSPI_CLASS) - rc = qmspi_enable(hw_port, enable); -#if defined(CONFIG_MCHP_GPSPI) && !defined(LFW) - if ((hw_port & 0xF0) == GPSPI_CLASS) - rc = gpspi_enable(hw_port, enable); -#endif - return rc; -} |