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freifunkist-firmware/target/linux/layerscape/patches-4.14/818-qspi-support-layerscape...

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From fe21ef44284a3aa6fd80448e4ab2e1e8a55fb926 Mon Sep 17 00:00:00 2001
From: Biwen Li <biwen.li@nxp.com>
Date: Wed, 17 Apr 2019 18:58:59 +0800
Subject: [PATCH] qspi: support layerscape
This is an integrated patch of qspi for layerscape
Signed-off-by: Abhimanyu Saini <abhimanyu.saini@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Chuanhua Han <chuanhua.han@nxp.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
---
drivers/mtd/spi-nor/fsl-quadspi.c | 444 +++++++++++++++++++-----------
drivers/mtd/spi-nor/spi-nor.c | 5 +
drivers/spi/spi-fsl-dspi.c | 4 +-
3 files changed, 291 insertions(+), 162 deletions(-)
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -41,6 +41,7 @@
#define QUADSPI_QUIRK_TKT253890 (1 << 2)
/* Controller cannot wake up from wait mode, TKT245618 */
#define QUADSPI_QUIRK_TKT245618 (1 << 3)
+#define QUADSPI_ADDR_REMAP (1 << 4)
/* The registers */
#define QUADSPI_MCR 0x00
@@ -183,7 +184,7 @@
/* Macros for constructing the LUT register. */
#define LUT0(ins, pad, opr) \
- (((opr) << OPRND0_SHIFT) | ((LUT_##pad) << PAD0_SHIFT) | \
+ (((opr) << OPRND0_SHIFT) | ((pad) << PAD0_SHIFT) | \
((LUT_##ins) << INSTR0_SHIFT))
#define LUT1(ins, pad, opr) (LUT0(ins, pad, opr) << OPRND1_SHIFT)
@@ -193,27 +194,29 @@
#define QUADSPI_LUT_NUM 64
/* SEQID -- we can have 16 seqids at most. */
-#define SEQID_READ 0
-#define SEQID_WREN 1
-#define SEQID_WRDI 2
-#define SEQID_RDSR 3
-#define SEQID_SE 4
-#define SEQID_CHIP_ERASE 5
-#define SEQID_PP 6
-#define SEQID_RDID 7
-#define SEQID_WRSR 8
-#define SEQID_RDCR 9
-#define SEQID_EN4B 10
-#define SEQID_BRWR 11
+/* LUT0 programmed by bootloader, for run-time create entry for LUT seqid 1 */
+#define SEQID_LUT0_BOOTLOADER 0
+#define SEQID_LUT1_RUNTIME 1
+#define SEQID_LUT2_AHBREAD 2
#define QUADSPI_MIN_IOMAP SZ_4M
+enum fsl_qspi_ops {
+ FSL_QSPI_OPS_READ = 0,
+ FSL_QSPI_OPS_WRITE,
+ FSL_QSPI_OPS_ERASE,
+ FSL_QSPI_OPS_READ_REG,
+ FSL_QSPI_OPS_WRITE_REG,
+ FSL_QSPI_OPS_WRITE_BUF_REG,
+};
+
enum fsl_qspi_devtype {
FSL_QUADSPI_VYBRID,
FSL_QUADSPI_IMX6SX,
FSL_QUADSPI_IMX7D,
FSL_QUADSPI_IMX6UL,
FSL_QUADSPI_LS1021A,
+ FSL_QUADSPI_LS2080A,
};
struct fsl_qspi_devtype_data {
@@ -267,6 +270,15 @@ static struct fsl_qspi_devtype_data ls10
.driver_data = 0,
};
+static const struct fsl_qspi_devtype_data ls2080a_data = {
+ .devtype = FSL_QUADSPI_LS2080A,
+ .rxfifo = 128,
+ .txfifo = 64,
+ .ahb_buf_size = 1024,
+ .driver_data = QUADSPI_QUIRK_TKT253890 | QUADSPI_ADDR_REMAP,
+};
+
+
#define FSL_QSPI_MAX_CHIP 4
struct fsl_qspi {
struct spi_nor nor[FSL_QSPI_MAX_CHIP];
@@ -310,6 +322,22 @@ static inline int needs_wakeup_wait_mode
}
/*
+ * QSPI memory regions split into two parts: a 256MB region that is located
+ * in the least significant 4GB of the SoC address space and a 3.75GB region
+ * that is located above the least significant 4GB of the SoC address space.
+ *
+ * The 4GB QSPI address space map is shown below.
+ *
+ * SoC Address QSPI Address
+ * 0x00_2000_0000-0x00_2FFF_FFFF 0x00_0000_0000-0x00_0FFF_FFFF First 256MB
+ * 0x04_1000_0000-0x04_FFFF_FFFF 0x00_1000_0000-0x00_FFFF_FFFF Last 3.75GB
+ */
+static inline int need_address_remap(struct fsl_qspi *q)
+{
+ return q->devtype_data->driver_data & QUADSPI_ADDR_REMAP;
+}
+
+/*
* R/W functions for big- or little-endian registers:
* The qSPI controller's endian is independent of the CPU core's endian.
* So far, although the CPU core is little-endian but the qSPI have two
@@ -368,137 +396,160 @@ static irqreturn_t fsl_qspi_irq_handler(
return IRQ_HANDLED;
}
-static void fsl_qspi_init_lut(struct fsl_qspi *q)
+static inline s8 pad_count(s8 pad_val)
{
+ s8 count = -1;
+
+ if (!pad_val)
+ return 0;
+
+ while (pad_val) {
+ pad_val >>= 1;
+ count++;
+ }
+ return count;
+}
+
+/*
+ * Prepare LUT entry for the input cmd.
+ * Protocol info is present in instance of struct spi_nor, using which fields
+ * like cmd, data, addrlen along with pad info etc can be parsed.
+ */
+static void fsl_qspi_prepare_lut(struct spi_nor *nor,
+ enum fsl_qspi_ops ops, u8 cmd)
+{
+ struct fsl_qspi *q = nor->priv;
void __iomem *base = q->iobase;
int rxfifo = q->devtype_data->rxfifo;
+ int txfifo = q->devtype_data->txfifo;
u32 lut_base;
- int i;
+ u8 cmd_pad, addr_pad, data_pad, dummy_pad;
+ enum spi_nor_protocol protocol = 0;
+ u8 addrlen = 0;
+ u8 read_dm, opcode;
+ int stop_lut;
+
+ read_dm = opcode = cmd_pad = addr_pad = data_pad = dummy_pad = 0;
+
+ switch (ops) {
+ case FSL_QSPI_OPS_READ_REG:
+ case FSL_QSPI_OPS_WRITE_REG:
+ case FSL_QSPI_OPS_WRITE_BUF_REG:
+ opcode = cmd;
+ protocol = nor->reg_proto;
+ break;
+ case FSL_QSPI_OPS_READ:
+ opcode = cmd;
+ read_dm = nor->read_dummy;
+ protocol = nor->read_proto;
+ break;
+ case FSL_QSPI_OPS_WRITE:
+ opcode = cmd;
+ protocol = nor->write_proto;
+ break;
+ case FSL_QSPI_OPS_ERASE:
+ opcode = cmd;
+ break;
+ default:
+ dev_err(q->dev, "Unsupported operation 0x%.2x\n", ops);
+ return;
+ }
+
+ if (protocol) {
+ cmd_pad = spi_nor_get_protocol_inst_nbits(protocol);
+ addr_pad = spi_nor_get_protocol_addr_nbits(protocol);
+ data_pad = spi_nor_get_protocol_data_nbits(protocol);
+ }
+
+ dummy_pad = data_pad;
- struct spi_nor *nor = &q->nor[0];
- u8 addrlen = (nor->addr_width == 3) ? ADDR24BIT : ADDR32BIT;
- u8 read_op = nor->read_opcode;
- u8 read_dm = nor->read_dummy;
+ dev_dbg(q->dev, "ops:%x opcode:%x pad[cmd:%d, addr:%d, data:%d]\n",
+ ops, opcode, cmd_pad, addr_pad, data_pad);
fsl_qspi_unlock_lut(q);
- /* Clear all the LUT table */
- for (i = 0; i < QUADSPI_LUT_NUM; i++)
- qspi_writel(q, 0, base + QUADSPI_LUT_BASE + i * 4);
-
- /* Read */
- lut_base = SEQID_READ * 4;
-
- qspi_writel(q, LUT0(CMD, PAD1, read_op) | LUT1(ADDR, PAD1, addrlen),
- base + QUADSPI_LUT(lut_base));
- qspi_writel(q, LUT0(DUMMY, PAD1, read_dm) |
- LUT1(FSL_READ, PAD4, rxfifo),
- base + QUADSPI_LUT(lut_base + 1));
-
- /* Write enable */
- lut_base = SEQID_WREN * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_WREN),
- base + QUADSPI_LUT(lut_base));
-
- /* Page Program */
- lut_base = SEQID_PP * 4;
-
- qspi_writel(q, LUT0(CMD, PAD1, nor->program_opcode) |
- LUT1(ADDR, PAD1, addrlen),
- base + QUADSPI_LUT(lut_base));
- qspi_writel(q, LUT0(FSL_WRITE, PAD1, 0),
- base + QUADSPI_LUT(lut_base + 1));
-
- /* Read Status */
- lut_base = SEQID_RDSR * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_RDSR) |
- LUT1(FSL_READ, PAD1, 0x1),
- base + QUADSPI_LUT(lut_base));
-
- /* Erase a sector */
- lut_base = SEQID_SE * 4;
-
- qspi_writel(q, LUT0(CMD, PAD1, nor->erase_opcode) |
- LUT1(ADDR, PAD1, addrlen),
- base + QUADSPI_LUT(lut_base));
-
- /* Erase the whole chip */
- lut_base = SEQID_CHIP_ERASE * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_CHIP_ERASE),
- base + QUADSPI_LUT(lut_base));
-
- /* READ ID */
- lut_base = SEQID_RDID * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_RDID) |
- LUT1(FSL_READ, PAD1, 0x8),
- base + QUADSPI_LUT(lut_base));
-
- /* Write Register */
- lut_base = SEQID_WRSR * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_WRSR) |
- LUT1(FSL_WRITE, PAD1, 0x2),
- base + QUADSPI_LUT(lut_base));
-
- /* Read Configuration Register */
- lut_base = SEQID_RDCR * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_RDCR) |
- LUT1(FSL_READ, PAD1, 0x1),
- base + QUADSPI_LUT(lut_base));
-
- /* Write disable */
- lut_base = SEQID_WRDI * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_WRDI),
- base + QUADSPI_LUT(lut_base));
-
- /* Enter 4 Byte Mode (Micron) */
- lut_base = SEQID_EN4B * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_EN4B),
- base + QUADSPI_LUT(lut_base));
-
- /* Enter 4 Byte Mode (Spansion) */
- lut_base = SEQID_BRWR * 4;
- qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_BRWR),
- base + QUADSPI_LUT(lut_base));
+ /* Dynamic LUT */
+ lut_base = SEQID_LUT1_RUNTIME * 4;
+ if (ops == FSL_QSPI_OPS_READ)
+ lut_base = SEQID_LUT2_AHBREAD * 4;
+
+ /* default, STOP instruction to be programmed in (lut_base + 1) reg */
+ stop_lut = 1;
+ switch (ops) {
+ case FSL_QSPI_OPS_READ_REG:
+ qspi_writel(q, LUT0(CMD, pad_count(cmd_pad), opcode) |
+ LUT1(FSL_READ, pad_count(data_pad), rxfifo),
+ base + QUADSPI_LUT(lut_base));
+ break;
+ case FSL_QSPI_OPS_WRITE_REG:
+ qspi_writel(q, LUT0(CMD, pad_count(cmd_pad), opcode),
+ base + QUADSPI_LUT(lut_base));
+ break;
+ case FSL_QSPI_OPS_WRITE_BUF_REG:
+ qspi_writel(q, LUT0(CMD, pad_count(cmd_pad), opcode) |
+ LUT1(FSL_WRITE, pad_count(data_pad), txfifo),
+ base + QUADSPI_LUT(lut_base));
+ break;
+ case FSL_QSPI_OPS_READ:
+ case FSL_QSPI_OPS_WRITE:
+ case FSL_QSPI_OPS_ERASE:
+ /* Common for Read, Write and Erase ops. */
+
+ addrlen = (nor->addr_width == 3) ? ADDR24BIT : ADDR32BIT;
+
+ qspi_writel(q, LUT0(CMD, pad_count(cmd_pad), opcode) |
+ LUT1(ADDR, pad_count(addr_pad), addrlen),
+ base + QUADSPI_LUT(lut_base));
+ /*
+ * For Erase ops - Data and Dummy not required.
+ * For Write ops - Dummy not required.
+ */
- fsl_qspi_lock_lut(q);
-}
+ if (ops == FSL_QSPI_OPS_READ) {
-/* Get the SEQID for the command */
-static int fsl_qspi_get_seqid(struct fsl_qspi *q, u8 cmd)
-{
- switch (cmd) {
- case SPINOR_OP_READ_1_1_4:
- case SPINOR_OP_READ_1_1_4_4B:
- return SEQID_READ;
- case SPINOR_OP_WREN:
- return SEQID_WREN;
- case SPINOR_OP_WRDI:
- return SEQID_WRDI;
- case SPINOR_OP_RDSR:
- return SEQID_RDSR;
- case SPINOR_OP_SE:
- return SEQID_SE;
- case SPINOR_OP_CHIP_ERASE:
- return SEQID_CHIP_ERASE;
- case SPINOR_OP_PP:
- return SEQID_PP;
- case SPINOR_OP_RDID:
- return SEQID_RDID;
- case SPINOR_OP_WRSR:
- return SEQID_WRSR;
- case SPINOR_OP_RDCR:
- return SEQID_RDCR;
- case SPINOR_OP_EN4B:
- return SEQID_EN4B;
- case SPINOR_OP_BRWR:
- return SEQID_BRWR;
+ /*
+ * For cmds SPINOR_OP_READ and SPINOR_OP_READ_4B value
+ * of dummy cycles are 0.
+ */
+ if (read_dm)
+ qspi_writel(q,
+ LUT0(DUMMY, pad_count(dummy_pad),
+ read_dm) |
+ LUT1(FSL_READ, pad_count(data_pad),
+ rxfifo),
+ base + QUADSPI_LUT(lut_base + 1));
+ else
+ qspi_writel(q,
+ LUT0(FSL_READ, pad_count(data_pad),
+ rxfifo),
+ base + QUADSPI_LUT(lut_base + 1));
+
+ stop_lut = 2;
+
+ /* TODO Add condition to check if READ is IP/AHB. */
+
+ /* For AHB read, add seqid in BFGENCR register. */
+ qspi_writel(q,
+ SEQID_LUT2_AHBREAD <<
+ QUADSPI_BFGENCR_SEQID_SHIFT,
+ q->iobase + QUADSPI_BFGENCR);
+ }
+
+ if (ops == FSL_QSPI_OPS_WRITE) {
+ qspi_writel(q, LUT0(FSL_WRITE, pad_count(data_pad), 0),
+ base + QUADSPI_LUT(lut_base + 1));
+ stop_lut = 2;
+ }
+ break;
default:
- if (cmd == q->nor[0].erase_opcode)
- return SEQID_SE;
- dev_err(q->dev, "Unsupported cmd 0x%.2x\n", cmd);
+ dev_err(q->dev, "Unsupported operation 0x%.2x\n", ops);
break;
}
- return -EINVAL;
+
+ /* prepare LUT for STOP instruction. */
+ qspi_writel(q, 0, base + QUADSPI_LUT(lut_base + stop_lut));
+
+ fsl_qspi_lock_lut(q);
}
static int
@@ -508,6 +559,10 @@ fsl_qspi_runcmd(struct fsl_qspi *q, u8 c
int seqid;
u32 reg, reg2;
int err;
+ u32 memmap_phyadd = q->memmap_phy;
+
+ if (need_address_remap(q))
+ memmap_phyadd = 0;
init_completion(&q->c);
dev_dbg(q->dev, "to 0x%.8x:0x%.8x, len:%d, cmd:%.2x\n",
@@ -516,7 +571,7 @@ fsl_qspi_runcmd(struct fsl_qspi *q, u8 c
/* save the reg */
reg = qspi_readl(q, base + QUADSPI_MCR);
- qspi_writel(q, q->memmap_phy + q->chip_base_addr + addr,
+ qspi_writel(q, memmap_phyadd + q->chip_base_addr + addr,
base + QUADSPI_SFAR);
qspi_writel(q, QUADSPI_RBCT_WMRK_MASK | QUADSPI_RBCT_RXBRD_USEIPS,
base + QUADSPI_RBCT);
@@ -533,7 +588,7 @@ fsl_qspi_runcmd(struct fsl_qspi *q, u8 c
} while (1);
/* trigger the LUT now */
- seqid = fsl_qspi_get_seqid(q, cmd);
+ seqid = SEQID_LUT1_RUNTIME;
qspi_writel(q, (seqid << QUADSPI_IPCR_SEQID_SHIFT) | len,
base + QUADSPI_IPCR);
@@ -609,6 +664,7 @@ static ssize_t fsl_qspi_nor_write(struct
{
int ret, i, j;
u32 tmp;
+ u8 byts;
dev_dbg(q->dev, "to 0x%.8x:0x%.8x, len : %d\n",
q->chip_base_addr, to, count);
@@ -618,10 +674,18 @@ static ssize_t fsl_qspi_nor_write(struct
qspi_writel(q, tmp | QUADSPI_MCR_CLR_TXF_MASK, q->iobase + QUADSPI_MCR);
/* fill the TX data to the FIFO */
+ byts = count;
for (j = 0, i = ((count + 3) / 4); j < i; j++) {
- tmp = fsl_qspi_endian_xchg(q, *txbuf);
+ if(byts >= 4)
+ tmp = fsl_qspi_endian_xchg(q, *txbuf);
+ else {
+ memcpy(&tmp, txbuf, byts);
+ tmp = fsl_qspi_endian_xchg(q, tmp);
+ }
+
qspi_writel(q, tmp, q->iobase + QUADSPI_TBDR);
txbuf++;
+ byts -= 4;
}
/* fill the TXFIFO upto 16 bytes for i.MX7d */
@@ -642,11 +706,15 @@ static void fsl_qspi_set_map_addr(struct
{
int nor_size = q->nor_size;
void __iomem *base = q->iobase;
+ u32 memmap_phyadd = q->memmap_phy;
+
+ if (need_address_remap(q))
+ memmap_phyadd = 0;
- qspi_writel(q, nor_size + q->memmap_phy, base + QUADSPI_SFA1AD);
- qspi_writel(q, nor_size * 2 + q->memmap_phy, base + QUADSPI_SFA2AD);
- qspi_writel(q, nor_size * 3 + q->memmap_phy, base + QUADSPI_SFB1AD);
- qspi_writel(q, nor_size * 4 + q->memmap_phy, base + QUADSPI_SFB2AD);
+ qspi_writel(q, nor_size + memmap_phyadd, base + QUADSPI_SFA1AD);
+ qspi_writel(q, nor_size * 2 + memmap_phyadd, base + QUADSPI_SFA2AD);
+ qspi_writel(q, nor_size * 3 + memmap_phyadd, base + QUADSPI_SFB1AD);
+ qspi_writel(q, nor_size * 4 + memmap_phyadd, base + QUADSPI_SFB2AD);
}
/*
@@ -662,7 +730,7 @@ static void fsl_qspi_set_map_addr(struct
* causes the controller to clear the buffer, and use the sequence pointed
* by the QUADSPI_BFGENCR[SEQID] to initiate a read from the flash.
*/
-static void fsl_qspi_init_abh_read(struct fsl_qspi *q)
+static void fsl_qspi_init_ahb_read(struct fsl_qspi *q)
{
void __iomem *base = q->iobase;
int seqid;
@@ -685,8 +753,8 @@ static void fsl_qspi_init_abh_read(struc
qspi_writel(q, 0, base + QUADSPI_BUF1IND);
qspi_writel(q, 0, base + QUADSPI_BUF2IND);
- /* Set the default lut sequence for AHB Read. */
- seqid = fsl_qspi_get_seqid(q, q->nor[0].read_opcode);
+ /* Set dynamic LUT entry as lut sequence for AHB Read . */
+ seqid = SEQID_LUT2_AHBREAD;
qspi_writel(q, seqid << QUADSPI_BFGENCR_SEQID_SHIFT,
q->iobase + QUADSPI_BFGENCR);
}
@@ -729,7 +797,6 @@ static int fsl_qspi_nor_setup(struct fsl
void __iomem *base = q->iobase;
u32 reg;
int ret;
-
/* disable and unprepare clock to avoid glitch pass to controller */
fsl_qspi_clk_disable_unprep(q);
@@ -747,9 +814,6 @@ static int fsl_qspi_nor_setup(struct fsl
base + QUADSPI_MCR);
udelay(1);
- /* Init the LUT table. */
- fsl_qspi_init_lut(q);
-
/* Disable the module */
qspi_writel(q, QUADSPI_MCR_MDIS_MASK | QUADSPI_MCR_RESERVED_MASK,
base + QUADSPI_MCR);
@@ -770,6 +834,9 @@ static int fsl_qspi_nor_setup(struct fsl
/* enable the interrupt */
qspi_writel(q, QUADSPI_RSER_TFIE, q->iobase + QUADSPI_RSER);
+ /* Init for AHB read */
+ fsl_qspi_init_ahb_read(q);
+
return 0;
}
@@ -792,12 +859,6 @@ static int fsl_qspi_nor_setup_last(struc
if (ret)
return ret;
- /* Init the LUT table again. */
- fsl_qspi_init_lut(q);
-
- /* Init for AHB read */
- fsl_qspi_init_abh_read(q);
-
return 0;
}
@@ -807,6 +868,7 @@ static const struct of_device_id fsl_qsp
{ .compatible = "fsl,imx7d-qspi", .data = (void *)&imx7d_data, },
{ .compatible = "fsl,imx6ul-qspi", .data = (void *)&imx6ul_data, },
{ .compatible = "fsl,ls1021a-qspi", .data = (void *)&ls1021a_data, },
+ { .compatible = "fsl,ls2080a-qspi", .data = &ls2080a_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, fsl_qspi_dt_ids);
@@ -821,6 +883,7 @@ static int fsl_qspi_read_reg(struct spi_
int ret;
struct fsl_qspi *q = nor->priv;
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_READ_REG, opcode);
ret = fsl_qspi_runcmd(q, opcode, 0, len);
if (ret)
return ret;
@@ -835,6 +898,8 @@ static int fsl_qspi_write_reg(struct spi
int ret;
if (!buf) {
+ /* Prepare LUT for WRITE_REG cmd with input BUF as NULL. */
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_WRITE_REG, opcode);
ret = fsl_qspi_runcmd(q, opcode, 0, 1);
if (ret)
return ret;
@@ -843,6 +908,8 @@ static int fsl_qspi_write_reg(struct spi
fsl_qspi_invalid(q);
} else if (len > 0) {
+ /* Prepare LUT for WRITE_REG cmd with input BUF non-NULL. */
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_WRITE_BUF_REG, opcode);
ret = fsl_qspi_nor_write(q, nor, opcode, 0,
(u32 *)buf, len);
if (ret > 0)
@@ -859,8 +926,11 @@ static ssize_t fsl_qspi_write(struct spi
size_t len, const u_char *buf)
{
struct fsl_qspi *q = nor->priv;
- ssize_t ret = fsl_qspi_nor_write(q, nor, nor->program_opcode, to,
- (u32 *)buf, len);
+ ssize_t ret;
+
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_WRITE, nor->program_opcode);
+ ret = fsl_qspi_nor_write(q, nor, nor->program_opcode, to,
+ (u32 *)buf, len);
/* invalid the data in the AHB buffer. */
fsl_qspi_invalid(q);
@@ -873,6 +943,8 @@ static ssize_t fsl_qspi_read(struct spi_
struct fsl_qspi *q = nor->priv;
u8 cmd = nor->read_opcode;
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_READ, nor->read_opcode);
+
/* if necessary,ioremap buffer before AHB read, */
if (!q->ahb_addr) {
q->memmap_offs = q->chip_base_addr + from;
@@ -907,8 +979,9 @@ static ssize_t fsl_qspi_read(struct spi_
len);
/* Read out the data directly from the AHB buffer.*/
- memcpy(buf, q->ahb_addr + q->chip_base_addr + from - q->memmap_offs,
- len);
+ memcpy_fromio(buf,
+ q->ahb_addr + q->chip_base_addr + from - q->memmap_offs,
+ len);
return len;
}
@@ -921,6 +994,7 @@ static int fsl_qspi_erase(struct spi_nor
dev_dbg(nor->dev, "%dKiB at 0x%08x:0x%08x\n",
nor->mtd.erasesize / 1024, q->chip_base_addr, (u32)offs);
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_ERASE, nor->erase_opcode);
ret = fsl_qspi_runcmd(q, nor->erase_opcode, offs, 0);
if (ret)
return ret;
@@ -958,17 +1032,14 @@ static void fsl_qspi_unprep(struct spi_n
static int fsl_qspi_probe(struct platform_device *pdev)
{
- const struct spi_nor_hwcaps hwcaps = {
- .mask = SNOR_HWCAPS_READ_1_1_4 |
- SNOR_HWCAPS_PP,
- };
+ struct spi_nor_hwcaps hwcaps;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct fsl_qspi *q;
struct resource *res;
struct spi_nor *nor;
struct mtd_info *mtd;
- int ret, i = 0;
+ int ret, i = 0, value;
q = devm_kzalloc(dev, sizeof(*q), GFP_KERNEL);
if (!q)
@@ -1041,6 +1112,10 @@ static int fsl_qspi_probe(struct platfor
/* iterate the subnodes. */
for_each_available_child_of_node(dev->of_node, np) {
+ /* Reset hwcaps mask to minimal caps for the slave node. */
+ hwcaps.mask = SNOR_HWCAPS_READ | SNOR_HWCAPS_PP;
+ value = 0;
+
/* skip the holes */
if (!q->has_second_chip)
i *= 2;
@@ -1070,6 +1145,51 @@ static int fsl_qspi_probe(struct platfor
/* set the chip address for READID */
fsl_qspi_set_base_addr(q, nor);
+ /*
+ * If spi-rx-bus-width and spi-tx-bus-width not defined assign
+ * default hardware capabilities SNOR_HWCAPS_READ_1_1_4 and
+ * SNOR_HWCAPS_PP supported by the Quad-SPI controller.
+ */
+ if (!of_property_read_u32(np, "spi-rx-bus-width", &value)) {
+ switch (value) {
+ case 1:
+ hwcaps.mask |= SNOR_HWCAPS_READ |
+ SNOR_HWCAPS_READ_FAST;
+ break;
+ case 2:
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_2 |
+ SNOR_HWCAPS_READ_1_2_2;
+ break;
+ case 4:
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4 |
+ SNOR_HWCAPS_READ_1_4_4;
+ break;
+ default:
+ dev_err(dev,
+ "spi-rx-bus-width %d not supported\n",
+ value);
+ break;
+ }
+ } else
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;
+
+ if (!of_property_read_u32(np, "spi-tx-bus-width", &value)) {
+ switch (value) {
+ case 1:
+ hwcaps.mask |= SNOR_HWCAPS_PP;
+ break;
+ case 4:
+ hwcaps.mask |= SNOR_HWCAPS_PP_1_1_4 |
+ SNOR_HWCAPS_PP_1_4_4;
+ break;
+ default:
+ dev_err(dev,
+ "spi-tx-bus-width %d not supported\n",
+ value);
+ break;
+ }
+ }
+
ret = spi_nor_scan(nor, NULL, &hwcaps);
if (ret)
goto mutex_failed;
@@ -1098,6 +1218,8 @@ static int fsl_qspi_probe(struct platfor
if (nor->page_size > q->devtype_data->txfifo)
nor->page_size = q->devtype_data->txfifo;
+ /*required for memory mapped AHB read*/
+ fsl_qspi_prepare_lut(nor, FSL_QSPI_OPS_READ, nor->read_opcode);
i++;
}
@@ -1106,6 +1228,8 @@ static int fsl_qspi_probe(struct platfor
if (ret)
goto last_init_failed;
+
+
fsl_qspi_clk_disable_unprep(q);
return 0;
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1154,6 +1154,11 @@ static const struct flash_info spi_nor_i
{ "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
{ "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) },
+ {
+ "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
{ "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) },
{ "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) },
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -1024,8 +1024,8 @@ static int dspi_probe(struct platform_de
goto out_clk_put;
}
- ret = devm_request_irq(&pdev->dev, dspi->irq, dspi_interrupt, 0,
- pdev->name, dspi);
+ ret = devm_request_irq(&pdev->dev, dspi->irq, dspi_interrupt,
+ IRQF_SHARED, pdev->name, dspi);
if (ret < 0) {
dev_err(&pdev->dev, "Unable to attach DSPI interrupt\n");
goto out_clk_put;