CONFIG_DM_SERIAL=y
CONFIG_SYS_NS16550=y
CONFIG_DM_SPI=y
-CONFIG_NDS_AE3XX_SPI=y
+CONFIG_ATCSPI200_SPI=y
CONFIG_TIMER=y
CONFIG_ATCPIT100_TIMER=y
used to access the SPI NOR flash on platforms embedding this
Freescale IP core.
-config NDS_AE3XX_SPI
- bool "Andestech AE3XX SPI driver"
+config ATCSPI200_SPI
+ bool "Andestech ATCSPI200 SPI driver"
help
- Enable the Andestech AE3XX SPI driver. This driver can be
- used to access the SPI flash on platforms embedding this
- Andestech IP core.
+ Enable the Andestech ATCSPI200 SPI driver. This driver can be
+ used to access the SPI flash on AE3XX and AE250 platforms embedding
+ this Andestech IP core.
config TI_QSPI
bool "TI QSPI driver"
obj-$(CONFIG_MVEBU_A3700_SPI) += mvebu_a3700_spi.o
obj-$(CONFIG_MXC_SPI) += mxc_spi.o
obj-$(CONFIG_MXS_SPI) += mxs_spi.o
-obj-$(CONFIG_NDS_AE3XX_SPI) += nds_ae3xx_spi.o
+obj-$(CONFIG_ATCSPI200_SPI) += atcspi200_spi.o
obj-$(CONFIG_OMAP3_SPI) += omap3_spi.o
obj-$(CONFIG_PIC32_SPI) += pic32_spi.o
obj-$(CONFIG_ROCKCHIP_SPI) += rk_spi.o
--- /dev/null
+/*
+ * NDS SPI controller driver.
+ *
+ * Copyright 2017 Andes Technology, Inc.
+ * Author: Rick Chen (rick@andestech.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <malloc.h>
+#include <spi.h>
+#include <asm/io.h>
+#include <dm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define MAX_TRANSFER_LEN 512
+#define CHUNK_SIZE 1
+#define SPI_TIMEOUT 0x100000
+#define SPI0_BUS 0
+#define SPI1_BUS 1
+#define SPI0_BASE 0xf0b00000
+#define SPI1_BASE 0xf0f00000
+#define NSPI_MAX_CS_NUM 1
+
+struct ae3xx_spi_regs {
+ u32 rev;
+ u32 reserve1[3];
+ u32 format; /* 0x10 */
+#define DATA_LENGTH(x) ((x-1)<<8)
+ u32 pio;
+ u32 reserve2[2];
+ u32 tctrl; /* 0x20 */
+#define TRAMODE_OFFSET 24
+#define TRAMODE_MASK (0x0F<<TRAMODE_OFFSET)
+#define TRAMODE_WR_SYNC (0<<TRAMODE_OFFSET)
+#define TRAMODE_WO (1<<TRAMODE_OFFSET)
+#define TRAMODE_RO (2<<TRAMODE_OFFSET)
+#define TRAMODE_WR (3<<TRAMODE_OFFSET)
+#define TRAMODE_RW (4<<TRAMODE_OFFSET)
+#define TRAMODE_WDR (5<<TRAMODE_OFFSET)
+#define TRAMODE_RDW (6<<TRAMODE_OFFSET)
+#define TRAMODE_NONE (7<<TRAMODE_OFFSET)
+#define TRAMODE_DW (8<<TRAMODE_OFFSET)
+#define TRAMODE_DR (9<<TRAMODE_OFFSET)
+#define WCNT_OFFSET 12
+#define WCNT_MASK (0x1FF<<WCNT_OFFSET)
+#define RCNT_OFFSET 0
+#define RCNT_MASK (0x1FF<<RCNT_OFFSET)
+ u32 cmd;
+ u32 addr;
+ u32 data;
+ u32 ctrl; /* 0x30 */
+#define TXFTH_OFFSET 16
+#define RXFTH_OFFSET 8
+#define TXDMAEN (1<<4)
+#define RXDMAEN (1<<3)
+#define TXFRST (1<<2)
+#define RXFRST (1<<1)
+#define SPIRST (1<<0)
+ u32 status;
+#define TXFFL (1<<23)
+#define TXEPTY (1<<22)
+#define TXFVE_MASK (0x1F<<16)
+#define RXFEM (1<<14)
+#define RXFVE_OFFSET (8)
+#define RXFVE_MASK (0x1F<<RXFVE_OFFSET)
+#define SPIBSY (1<<0)
+ u32 inten;
+ u32 intsta;
+ u32 timing; /* 0x40 */
+#define SCLK_DIV_MASK 0xFF
+};
+
+struct nds_spi_slave {
+#ifndef CONFIG_DM_SPI
+ struct spi_slave slave;
+#endif
+ volatile struct ae3xx_spi_regs *regs;
+ int to;
+ unsigned int freq;
+ ulong clock;
+ unsigned int mode;
+ u8 num_cs;
+ unsigned int mtiming;
+ size_t cmd_len;
+ u8 cmd_buf[16];
+ size_t data_len;
+ size_t tran_len;
+ u8 *din;
+ u8 *dout;
+ unsigned int max_transfer_length;
+};
+
+static int __ae3xx_spi_set_speed(struct nds_spi_slave *ns)
+{
+ u32 tm;
+ u8 div;
+ tm = ns->regs->timing;
+ tm &= ~SCLK_DIV_MASK;
+
+ if(ns->freq >= ns->clock)
+ div =0xff;
+ else{
+ for (div = 0; div < 0xff; div++) {
+ if (ns->freq >= ns->clock / (2 * (div + 1)))
+ break;
+ }
+ }
+
+ tm |= div;
+ ns->regs->timing = tm;
+
+ return 0;
+
+}
+
+static int __ae3xx_spi_claim_bus(struct nds_spi_slave *ns)
+{
+ unsigned int format=0;
+ ns->regs->ctrl |= (TXFRST|RXFRST|SPIRST);
+ while((ns->regs->ctrl &(TXFRST|RXFRST|SPIRST))&&(ns->to--))
+ if(!ns->to)
+ return -EINVAL;
+
+ ns->cmd_len = 0;
+ format = ns->mode|DATA_LENGTH(8);
+ ns->regs->format = format;
+ __ae3xx_spi_set_speed(ns);
+
+ return 0;
+}
+
+static int __ae3xx_spi_release_bus(struct nds_spi_slave *ns)
+{
+ /* do nothing */
+ return 0;
+}
+
+static int __ae3xx_spi_start(struct nds_spi_slave *ns)
+{
+ int i,olen=0;
+ int tc = ns->regs->tctrl;
+
+ tc &= ~(WCNT_MASK|RCNT_MASK|TRAMODE_MASK);
+ if ((ns->din)&&(ns->cmd_len))
+ tc |= TRAMODE_WR;
+ else if (ns->din)
+ tc |= TRAMODE_RO;
+ else
+ tc |= TRAMODE_WO;
+
+ if(ns->dout)
+ olen = ns->tran_len;
+ tc |= (ns->cmd_len+olen-1) << WCNT_OFFSET;
+
+ if(ns->din)
+ tc |= (ns->tran_len-1) << RCNT_OFFSET;
+
+ ns->regs->tctrl = tc;
+ ns->regs->cmd = 1;
+
+ for (i=0;i<ns->cmd_len;i++)
+ ns->regs->data = ns->cmd_buf[i];
+
+ return 0;
+}
+
+static int __ae3xx_spi_stop(struct nds_spi_slave *ns)
+{
+ ns->regs->timing = ns->mtiming;
+ while ((ns->regs->status & SPIBSY)&&(ns->to--))
+ if (!ns->to)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void __nspi_espi_tx(struct nds_spi_slave *ns, const void *dout)
+{
+ ns->regs->data = *(u8 *)dout;
+}
+
+static int __nspi_espi_rx(struct nds_spi_slave *ns, void *din, unsigned int bytes)
+{
+ *(u8 *)din = ns->regs->data;
+ return bytes;
+}
+
+
+static int __ae3xx_spi_xfer(struct nds_spi_slave *ns,
+ unsigned int bitlen, const void *data_out, void *data_in,
+ unsigned long flags)
+{
+ unsigned int event, rx_bytes;
+ const void *dout = NULL;
+ void *din = NULL;
+ int num_blks, num_chunks, max_tran_len, tran_len;
+ int num_bytes;
+ u8 *cmd_buf = ns->cmd_buf;
+ size_t cmd_len = ns->cmd_len;
+ size_t data_len = bitlen / 8;
+ int rf_cnt;
+ int ret = 0;
+
+ max_tran_len = ns->max_transfer_length;
+ switch (flags) {
+ case SPI_XFER_BEGIN:
+ cmd_len = ns->cmd_len = data_len;
+ memcpy(cmd_buf, data_out, cmd_len);
+ return 0;
+
+ case 0:
+ case SPI_XFER_END:
+ if (bitlen == 0) {
+ return 0;
+ }
+ ns->data_len = data_len;
+ ns->din = (u8 *)data_in;
+ ns->dout = (u8 *)data_out;
+ break;
+
+ case SPI_XFER_BEGIN | SPI_XFER_END:
+ ns->data_len = 0;
+ ns->din = 0;
+ ns->dout = 0;
+ cmd_len = ns->cmd_len = data_len;
+ memcpy(cmd_buf, data_out, cmd_len);
+ data_out = 0;
+ data_len = 0;
+ __ae3xx_spi_start(ns);
+ break;
+ }
+ debug("spi_xfer: data_out %08X(%p) data_in %08X(%p) data_len %u\n",
+ *(uint *)data_out, data_out, *(uint *)data_in, data_in, data_len);
+ num_chunks = DIV_ROUND_UP(data_len, max_tran_len);
+ din = data_in;
+ dout = data_out;
+ while (num_chunks--) {
+ tran_len = min(data_len, (size_t)max_tran_len);
+ ns->tran_len = tran_len;
+ num_blks = DIV_ROUND_UP(tran_len , CHUNK_SIZE);
+ num_bytes = (tran_len) % CHUNK_SIZE;
+ if(num_bytes == 0)
+ num_bytes = CHUNK_SIZE;
+ __ae3xx_spi_start(ns);
+
+ while (num_blks) {
+ event = in_le32(&ns->regs->status);
+ if ((event & TXEPTY) && (data_out)) {
+ __nspi_espi_tx(ns, dout);
+ num_blks -= CHUNK_SIZE;
+ dout += CHUNK_SIZE;
+ }
+
+ if ((event & RXFVE_MASK) && (data_in)) {
+ rf_cnt = ((event & RXFVE_MASK)>> RXFVE_OFFSET);
+ if (rf_cnt >= CHUNK_SIZE)
+ rx_bytes = CHUNK_SIZE;
+ else if (num_blks == 1 && rf_cnt == num_bytes)
+ rx_bytes = num_bytes;
+ else
+ continue;
+
+ if (__nspi_espi_rx(ns, din, rx_bytes) == rx_bytes) {
+ num_blks -= CHUNK_SIZE;
+ din = (unsigned char *)din + rx_bytes;
+ }
+ }
+ }
+
+ data_len -= tran_len;
+ if(data_len)
+ {
+ ns->cmd_buf[1] += ((tran_len>>16)&0xff);
+ ns->cmd_buf[2] += ((tran_len>>8)&0xff);
+ ns->cmd_buf[3] += ((tran_len)&0xff);
+ ns->data_len = data_len;
+ }
+ ret = __ae3xx_spi_stop(ns);
+ }
+ ret = __ae3xx_spi_stop(ns);
+
+ return ret;
+}
+
+#ifndef CONFIG_DM_SPI
+#define to_nds_spi_slave(s) container_of(s, struct nds_spi_slave, slave)
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
+ unsigned int max_hz, unsigned int mode)
+{
+ struct nds_spi_slave *ns;
+
+ if (!spi_cs_is_valid(bus, cs))
+ return NULL;
+
+ ns = spi_alloc_slave(struct nds_spi_slave, bus, cs);
+
+ switch (bus) {
+ case SPI0_BUS:
+ ns->regs = (struct ae3xx_spi_regs *)SPI0_BASE;
+ break;
+
+ case SPI1_BUS:
+ ns->regs = (struct ae3xx_spi_regs *)SPI1_BASE;
+ break;
+
+ default:
+ return NULL;
+ }
+
+ ns->freq= max_hz;
+ ns->mode = mode;
+ ns->to = SPI_TIMEOUT;
+ ns->max_transfer_length = MAX_TRANSFER_LEN;
+ ns->slave.max_write_size = MAX_TRANSFER_LEN;
+ if (!ns)
+ return NULL;
+
+ return &ns->slave;
+}
+
+void spi_free_slave(struct spi_slave *slave)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ free(ns);
+}
+
+void spi_init(void)
+{
+ /* do nothing */
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ return __ae3xx_spi_claim_bus(ns);
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ __ae3xx_spi_release_bus(ns);
+}
+
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *data_out,
+ void *data_in, unsigned long flags)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ return __ae3xx_spi_xfer(ns, bitlen, data_out, data_in, flags);
+}
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+ return bus == 0 && cs < NSPI_MAX_CS_NUM;
+}
+
+void spi_cs_activate(struct spi_slave *slave)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ __ae3xx_spi_start(ns);
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+ struct nds_spi_slave *ns = to_nds_spi_slave(slave);
+ __ae3xx_spi_stop(ns);
+}
+#else
+static int ae3xx_spi_set_speed(struct udevice *bus, uint max_hz)
+{
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+
+ debug("%s speed %u\n", __func__, max_hz);
+
+ ns->freq = max_hz;
+ __ae3xx_spi_set_speed(ns);
+
+ return 0;
+}
+
+static int ae3xx_spi_set_mode(struct udevice *bus, uint mode)
+{
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+
+ debug("%s mode %u\n", __func__, mode);
+ ns->mode = mode;
+
+ return 0;
+}
+
+static int ae3xx_spi_claim_bus(struct udevice *dev)
+{
+ struct dm_spi_slave_platdata *slave_plat =
+ dev_get_parent_platdata(dev);
+ struct udevice *bus = dev->parent;
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+
+ if (slave_plat->cs >= ns->num_cs) {
+ printf("Invalid SPI chipselect\n");
+ return -EINVAL;
+ }
+
+ return __ae3xx_spi_claim_bus(ns);
+}
+
+static int ae3xx_spi_release_bus(struct udevice *dev)
+{
+ struct nds_spi_slave *ns = dev_get_priv(dev->parent);
+
+ return __ae3xx_spi_release_bus(ns);
+}
+
+static int ae3xx_spi_xfer(struct udevice *dev, unsigned int bitlen,
+ const void *dout, void *din,
+ unsigned long flags)
+{
+ struct udevice *bus = dev->parent;
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+
+ return __ae3xx_spi_xfer(ns, bitlen, dout, din, flags);
+}
+
+static int ae3xx_spi_get_clk(struct udevice *bus)
+{
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+ struct clk clk;
+ ulong clk_rate;
+ int ret;
+
+ ret = clk_get_by_index(bus, 0, &clk);
+ if (ret)
+ return -EINVAL;
+
+ clk_rate = clk_get_rate(&clk);
+ if (!clk_rate)
+ return -EINVAL;
+
+ ns->clock = clk_rate;
+ clk_free(&clk);
+
+ return 0;
+}
+
+static int ae3xx_spi_probe(struct udevice *bus)
+{
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+
+ ns->to = SPI_TIMEOUT;
+ ns->max_transfer_length = MAX_TRANSFER_LEN;
+ ns->mtiming = ns->regs->timing;
+ ae3xx_spi_get_clk(bus);
+
+ return 0;
+}
+
+static int ae3xx_ofdata_to_platadata(struct udevice *bus)
+{
+ struct nds_spi_slave *ns = dev_get_priv(bus);
+ const void *blob = gd->fdt_blob;
+ int node = dev_of_offset(bus);
+
+ ns->regs = map_physmem(devfdt_get_addr(bus),
+ sizeof(struct ae3xx_spi_regs),
+ MAP_NOCACHE);
+ if (!ns->regs) {
+ printf("%s: could not map device address\n", __func__);
+ return -EINVAL;
+ }
+ ns->num_cs = fdtdec_get_int(blob, node, "num-cs", 4);
+
+ return 0;
+}
+
+static const struct dm_spi_ops ae3xx_spi_ops = {
+ .claim_bus = ae3xx_spi_claim_bus,
+ .release_bus = ae3xx_spi_release_bus,
+ .xfer = ae3xx_spi_xfer,
+ .set_speed = ae3xx_spi_set_speed,
+ .set_mode = ae3xx_spi_set_mode,
+};
+
+static const struct udevice_id ae3xx_spi_ids[] = {
+ { .compatible = "andestech,atcspi200" },
+ { }
+};
+
+U_BOOT_DRIVER(ae3xx_spi) = {
+ .name = "ae3xx_spi",
+ .id = UCLASS_SPI,
+ .of_match = ae3xx_spi_ids,
+ .ops = &ae3xx_spi_ops,
+ .ofdata_to_platdata = ae3xx_ofdata_to_platadata,
+ .priv_auto_alloc_size = sizeof(struct nds_spi_slave),
+ .probe = ae3xx_spi_probe,
+};
+#endif
+++ /dev/null
-/*
- * NDS SPI controller driver.
- *
- * Copyright 2017 Andes Technology, Inc.
- * Author: Rick Chen (rick@andestech.com)
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <clk.h>
-#include <common.h>
-#include <malloc.h>
-#include <spi.h>
-#include <asm/io.h>
-#include <dm.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define MAX_TRANSFER_LEN 512
-#define CHUNK_SIZE 1
-#define SPI_TIMEOUT 0x100000
-#define SPI0_BUS 0
-#define SPI1_BUS 1
-#define SPI0_BASE 0xf0b00000
-#define SPI1_BASE 0xf0f00000
-#define NSPI_MAX_CS_NUM 1
-
-struct ae3xx_spi_regs {
- u32 rev;
- u32 reserve1[3];
- u32 format; /* 0x10 */
-#define DATA_LENGTH(x) ((x-1)<<8)
- u32 pio;
- u32 reserve2[2];
- u32 tctrl; /* 0x20 */
-#define TRAMODE_OFFSET 24
-#define TRAMODE_MASK (0x0F<<TRAMODE_OFFSET)
-#define TRAMODE_WR_SYNC (0<<TRAMODE_OFFSET)
-#define TRAMODE_WO (1<<TRAMODE_OFFSET)
-#define TRAMODE_RO (2<<TRAMODE_OFFSET)
-#define TRAMODE_WR (3<<TRAMODE_OFFSET)
-#define TRAMODE_RW (4<<TRAMODE_OFFSET)
-#define TRAMODE_WDR (5<<TRAMODE_OFFSET)
-#define TRAMODE_RDW (6<<TRAMODE_OFFSET)
-#define TRAMODE_NONE (7<<TRAMODE_OFFSET)
-#define TRAMODE_DW (8<<TRAMODE_OFFSET)
-#define TRAMODE_DR (9<<TRAMODE_OFFSET)
-#define WCNT_OFFSET 12
-#define WCNT_MASK (0x1FF<<WCNT_OFFSET)
-#define RCNT_OFFSET 0
-#define RCNT_MASK (0x1FF<<RCNT_OFFSET)
- u32 cmd;
- u32 addr;
- u32 data;
- u32 ctrl; /* 0x30 */
-#define TXFTH_OFFSET 16
-#define RXFTH_OFFSET 8
-#define TXDMAEN (1<<4)
-#define RXDMAEN (1<<3)
-#define TXFRST (1<<2)
-#define RXFRST (1<<1)
-#define SPIRST (1<<0)
- u32 status;
-#define TXFFL (1<<23)
-#define TXEPTY (1<<22)
-#define TXFVE_MASK (0x1F<<16)
-#define RXFEM (1<<14)
-#define RXFVE_OFFSET (8)
-#define RXFVE_MASK (0x1F<<RXFVE_OFFSET)
-#define SPIBSY (1<<0)
- u32 inten;
- u32 intsta;
- u32 timing; /* 0x40 */
-#define SCLK_DIV_MASK 0xFF
-};
-
-struct nds_spi_slave {
-#ifndef CONFIG_DM_SPI
- struct spi_slave slave;
-#endif
- volatile struct ae3xx_spi_regs *regs;
- int to;
- unsigned int freq;
- ulong clock;
- unsigned int mode;
- u8 num_cs;
- unsigned int mtiming;
- size_t cmd_len;
- u8 cmd_buf[16];
- size_t data_len;
- size_t tran_len;
- u8 *din;
- u8 *dout;
- unsigned int max_transfer_length;
-};
-
-static int __ae3xx_spi_set_speed(struct nds_spi_slave *ns)
-{
- u32 tm;
- u8 div;
- tm = ns->regs->timing;
- tm &= ~SCLK_DIV_MASK;
-
- if(ns->freq >= ns->clock)
- div =0xff;
- else{
- for (div = 0; div < 0xff; div++) {
- if (ns->freq >= ns->clock / (2 * (div + 1)))
- break;
- }
- }
-
- tm |= div;
- ns->regs->timing = tm;
-
- return 0;
-
-}
-
-static int __ae3xx_spi_claim_bus(struct nds_spi_slave *ns)
-{
- unsigned int format=0;
- ns->regs->ctrl |= (TXFRST|RXFRST|SPIRST);
- while((ns->regs->ctrl &(TXFRST|RXFRST|SPIRST))&&(ns->to--))
- if(!ns->to)
- return -EINVAL;
-
- ns->cmd_len = 0;
- format = ns->mode|DATA_LENGTH(8);
- ns->regs->format = format;
- __ae3xx_spi_set_speed(ns);
-
- return 0;
-}
-
-static int __ae3xx_spi_release_bus(struct nds_spi_slave *ns)
-{
- /* do nothing */
- return 0;
-}
-
-static int __ae3xx_spi_start(struct nds_spi_slave *ns)
-{
- int i,olen=0;
- int tc = ns->regs->tctrl;
-
- tc &= ~(WCNT_MASK|RCNT_MASK|TRAMODE_MASK);
- if ((ns->din)&&(ns->cmd_len))
- tc |= TRAMODE_WR;
- else if (ns->din)
- tc |= TRAMODE_RO;
- else
- tc |= TRAMODE_WO;
-
- if(ns->dout)
- olen = ns->tran_len;
- tc |= (ns->cmd_len+olen-1) << WCNT_OFFSET;
-
- if(ns->din)
- tc |= (ns->tran_len-1) << RCNT_OFFSET;
-
- ns->regs->tctrl = tc;
- ns->regs->cmd = 1;
-
- for (i=0;i<ns->cmd_len;i++)
- ns->regs->data = ns->cmd_buf[i];
-
- return 0;
-}
-
-static int __ae3xx_spi_stop(struct nds_spi_slave *ns)
-{
- ns->regs->timing = ns->mtiming;
- while ((ns->regs->status & SPIBSY)&&(ns->to--))
- if (!ns->to)
- return -EINVAL;
-
- return 0;
-}
-
-static void __nspi_espi_tx(struct nds_spi_slave *ns, const void *dout)
-{
- ns->regs->data = *(u8 *)dout;
-}
-
-static int __nspi_espi_rx(struct nds_spi_slave *ns, void *din, unsigned int bytes)
-{
- *(u8 *)din = ns->regs->data;
- return bytes;
-}
-
-
-static int __ae3xx_spi_xfer(struct nds_spi_slave *ns,
- unsigned int bitlen, const void *data_out, void *data_in,
- unsigned long flags)
-{
- unsigned int event, rx_bytes;
- const void *dout = NULL;
- void *din = NULL;
- int num_blks, num_chunks, max_tran_len, tran_len;
- int num_bytes;
- u8 *cmd_buf = ns->cmd_buf;
- size_t cmd_len = ns->cmd_len;
- size_t data_len = bitlen / 8;
- int rf_cnt;
- int ret = 0;
-
- max_tran_len = ns->max_transfer_length;
- switch (flags) {
- case SPI_XFER_BEGIN:
- cmd_len = ns->cmd_len = data_len;
- memcpy(cmd_buf, data_out, cmd_len);
- return 0;
-
- case 0:
- case SPI_XFER_END:
- if (bitlen == 0) {
- return 0;
- }
- ns->data_len = data_len;
- ns->din = (u8 *)data_in;
- ns->dout = (u8 *)data_out;
- break;
-
- case SPI_XFER_BEGIN | SPI_XFER_END:
- ns->data_len = 0;
- ns->din = 0;
- ns->dout = 0;
- cmd_len = ns->cmd_len = data_len;
- memcpy(cmd_buf, data_out, cmd_len);
- data_out = 0;
- data_len = 0;
- __ae3xx_spi_start(ns);
- break;
- }
- debug("spi_xfer: data_out %08X(%p) data_in %08X(%p) data_len %u\n",
- *(uint *)data_out, data_out, *(uint *)data_in, data_in, data_len);
- num_chunks = DIV_ROUND_UP(data_len, max_tran_len);
- din = data_in;
- dout = data_out;
- while (num_chunks--) {
- tran_len = min(data_len, (size_t)max_tran_len);
- ns->tran_len = tran_len;
- num_blks = DIV_ROUND_UP(tran_len , CHUNK_SIZE);
- num_bytes = (tran_len) % CHUNK_SIZE;
- if(num_bytes == 0)
- num_bytes = CHUNK_SIZE;
- __ae3xx_spi_start(ns);
-
- while (num_blks) {
- event = in_le32(&ns->regs->status);
- if ((event & TXEPTY) && (data_out)) {
- __nspi_espi_tx(ns, dout);
- num_blks -= CHUNK_SIZE;
- dout += CHUNK_SIZE;
- }
-
- if ((event & RXFVE_MASK) && (data_in)) {
- rf_cnt = ((event & RXFVE_MASK)>> RXFVE_OFFSET);
- if (rf_cnt >= CHUNK_SIZE)
- rx_bytes = CHUNK_SIZE;
- else if (num_blks == 1 && rf_cnt == num_bytes)
- rx_bytes = num_bytes;
- else
- continue;
-
- if (__nspi_espi_rx(ns, din, rx_bytes) == rx_bytes) {
- num_blks -= CHUNK_SIZE;
- din = (unsigned char *)din + rx_bytes;
- }
- }
- }
-
- data_len -= tran_len;
- if(data_len)
- {
- ns->cmd_buf[1] += ((tran_len>>16)&0xff);
- ns->cmd_buf[2] += ((tran_len>>8)&0xff);
- ns->cmd_buf[3] += ((tran_len)&0xff);
- ns->data_len = data_len;
- }
- ret = __ae3xx_spi_stop(ns);
- }
- ret = __ae3xx_spi_stop(ns);
-
- return ret;
-}
-
-#ifndef CONFIG_DM_SPI
-#define to_nds_spi_slave(s) container_of(s, struct nds_spi_slave, slave)
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct nds_spi_slave *ns;
-
- if (!spi_cs_is_valid(bus, cs))
- return NULL;
-
- ns = spi_alloc_slave(struct nds_spi_slave, bus, cs);
-
- switch (bus) {
- case SPI0_BUS:
- ns->regs = (struct ae3xx_spi_regs *)SPI0_BASE;
- break;
-
- case SPI1_BUS:
- ns->regs = (struct ae3xx_spi_regs *)SPI1_BASE;
- break;
-
- default:
- return NULL;
- }
-
- ns->freq= max_hz;
- ns->mode = mode;
- ns->to = SPI_TIMEOUT;
- ns->max_transfer_length = MAX_TRANSFER_LEN;
- ns->slave.max_write_size = MAX_TRANSFER_LEN;
- if (!ns)
- return NULL;
-
- return &ns->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- free(ns);
-}
-
-void spi_init(void)
-{
- /* do nothing */
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- return __ae3xx_spi_claim_bus(ns);
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- __ae3xx_spi_release_bus(ns);
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *data_out,
- void *data_in, unsigned long flags)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- return __ae3xx_spi_xfer(ns, bitlen, data_out, data_in, flags);
-}
-
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
- return bus == 0 && cs < NSPI_MAX_CS_NUM;
-}
-
-void spi_cs_activate(struct spi_slave *slave)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- __ae3xx_spi_start(ns);
-}
-
-void spi_cs_deactivate(struct spi_slave *slave)
-{
- struct nds_spi_slave *ns = to_nds_spi_slave(slave);
- __ae3xx_spi_stop(ns);
-}
-#else
-static int ae3xx_spi_set_speed(struct udevice *bus, uint max_hz)
-{
- struct nds_spi_slave *ns = dev_get_priv(bus);
-
- debug("%s speed %u\n", __func__, max_hz);
-
- ns->freq = max_hz;
- __ae3xx_spi_set_speed(ns);
-
- return 0;
-}
-
-static int ae3xx_spi_set_mode(struct udevice *bus, uint mode)
-{
- struct nds_spi_slave *ns = dev_get_priv(bus);
-
- debug("%s mode %u\n", __func__, mode);
- ns->mode = mode;
-
- return 0;
-}
-
-static int ae3xx_spi_claim_bus(struct udevice *dev)
-{
- struct dm_spi_slave_platdata *slave_plat =
- dev_get_parent_platdata(dev);
- struct udevice *bus = dev->parent;
- struct nds_spi_slave *ns = dev_get_priv(bus);
-
- if (slave_plat->cs >= ns->num_cs) {
- printf("Invalid SPI chipselect\n");
- return -EINVAL;
- }
-
- return __ae3xx_spi_claim_bus(ns);
-}
-
-static int ae3xx_spi_release_bus(struct udevice *dev)
-{
- struct nds_spi_slave *ns = dev_get_priv(dev->parent);
-
- return __ae3xx_spi_release_bus(ns);
-}
-
-static int ae3xx_spi_xfer(struct udevice *dev, unsigned int bitlen,
- const void *dout, void *din,
- unsigned long flags)
-{
- struct udevice *bus = dev->parent;
- struct nds_spi_slave *ns = dev_get_priv(bus);
-
- return __ae3xx_spi_xfer(ns, bitlen, dout, din, flags);
-}
-
-static int ae3xx_spi_get_clk(struct udevice *bus)
-{
- struct nds_spi_slave *ns = dev_get_priv(bus);
- struct clk clk;
- ulong clk_rate;
- int ret;
-
- ret = clk_get_by_index(bus, 0, &clk);
- if (ret)
- return -EINVAL;
-
- clk_rate = clk_get_rate(&clk);
- if (!clk_rate)
- return -EINVAL;
-
- ns->clock = clk_rate;
- clk_free(&clk);
-
- return 0;
-}
-
-static int ae3xx_spi_probe(struct udevice *bus)
-{
- struct nds_spi_slave *ns = dev_get_priv(bus);
-
- ns->to = SPI_TIMEOUT;
- ns->max_transfer_length = MAX_TRANSFER_LEN;
- ns->mtiming = ns->regs->timing;
- ae3xx_spi_get_clk(bus);
-
- return 0;
-}
-
-static int ae3xx_ofdata_to_platadata(struct udevice *bus)
-{
- struct nds_spi_slave *ns = dev_get_priv(bus);
- const void *blob = gd->fdt_blob;
- int node = dev_of_offset(bus);
-
- ns->regs = map_physmem(devfdt_get_addr(bus),
- sizeof(struct ae3xx_spi_regs),
- MAP_NOCACHE);
- if (!ns->regs) {
- printf("%s: could not map device address\n", __func__);
- return -EINVAL;
- }
- ns->num_cs = fdtdec_get_int(blob, node, "num-cs", 4);
-
- return 0;
-}
-
-static const struct dm_spi_ops ae3xx_spi_ops = {
- .claim_bus = ae3xx_spi_claim_bus,
- .release_bus = ae3xx_spi_release_bus,
- .xfer = ae3xx_spi_xfer,
- .set_speed = ae3xx_spi_set_speed,
- .set_mode = ae3xx_spi_set_mode,
-};
-
-static const struct udevice_id ae3xx_spi_ids[] = {
- { .compatible = "andestech,atcspi200" },
- { }
-};
-
-U_BOOT_DRIVER(ae3xx_spi) = {
- .name = "ae3xx_spi",
- .id = UCLASS_SPI,
- .of_match = ae3xx_spi_ids,
- .ops = &ae3xx_spi_ops,
- .ofdata_to_platdata = ae3xx_ofdata_to_platadata,
- .priv_auto_alloc_size = sizeof(struct nds_spi_slave),
- .probe = ae3xx_spi_probe,
-};
-#endif
projects / oweals / u-boot.git / commitdiff