summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/omap_gpio.c10
-rw-r--r--drivers/i2c/omap24xx_i2c.c20
-rw-r--r--drivers/mtd/nand/Makefile5
-rw-r--r--drivers/mtd/nand/am335x_spl_bch.c238
-rw-r--r--drivers/mtd/nand/omap_gpmc.c403
-rw-r--r--drivers/net/cpsw.c5
-rw-r--r--drivers/power/twl6035.c17
-rw-r--r--drivers/spi/omap3_spi.c76
-rw-r--r--drivers/spi/omap3_spi.h1
9 files changed, 720 insertions, 55 deletions
diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index fc89f2a42..a30d7f060 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -53,18 +53,14 @@ static inline int get_gpio_index(int gpio)
return gpio & 0x1f;
}
-static inline int gpio_valid(int gpio)
+int gpio_is_valid(int gpio)
{
- if (gpio < 0)
- return -1;
- if (gpio < 192)
- return 0;
- return -1;
+ return (gpio >= 0) && (gpio < 192);
}
static int check_gpio(int gpio)
{
- if (gpio_valid(gpio) < 0) {
+ if (!gpio_is_valid(gpio)) {
printf("ERROR : check_gpio: invalid GPIO %d\n", gpio);
return -1;
}
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index af454f901..54e9b1586 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -31,7 +31,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define I2C_TIMEOUT 1000
-static void wait_for_bb(void);
+static int wait_for_bb(void);
static u16 wait_for_pin(void);
static void flush_fifo(void);
@@ -159,7 +159,8 @@ static int i2c_read_byte(u8 devaddr, u16 regoffset, u8 alen, u8 *value)
u16 w;
/* wait until bus not busy */
- wait_for_bb();
+ if (wait_for_bb())
+ return 1;
/* one byte only */
writew(alen, &i2c_base->cnt);
@@ -263,7 +264,8 @@ int i2c_probe(uchar chip)
return res;
/* wait until bus not busy */
- wait_for_bb();
+ if (wait_for_bb())
+ return res;
/* try to read one byte */
writew(1, &i2c_base->cnt);
@@ -282,7 +284,10 @@ int i2c_probe(uchar chip)
res = 1;
writew(0xff, &i2c_base->stat);
writew (readw (&i2c_base->con) | I2C_CON_STP, &i2c_base->con);
- wait_for_bb ();
+
+ if (wait_for_bb())
+ res = 1;
+
break;
}
if (status & I2C_STAT_ARDY) {
@@ -355,7 +360,8 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
}
/* wait until bus not busy */
- wait_for_bb();
+ if (wait_for_bb())
+ return 1;
/* start address phase - will write regoffset + len bytes data */
/* TODO consider case when !CONFIG_OMAP243X/34XX/44XX */
@@ -399,7 +405,7 @@ write_exit:
return i2c_error;
}
-static void wait_for_bb(void)
+static int wait_for_bb(void)
{
int timeout = I2C_TIMEOUT;
u16 stat;
@@ -413,8 +419,10 @@ static void wait_for_bb(void)
if (timeout <= 0) {
printf("timed out in wait_for_bb: I2C_STAT=%x\n",
readw(&i2c_base->stat));
+ return 1;
}
writew(0xFFFF, &i2c_base->stat); /* clear delayed stuff*/
+ return 0;
}
static u16 wait_for_pin(void)
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 28e52bd08..2c3812c3b 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -33,6 +33,7 @@ ifdef CONFIG_SPL_NAND_DRIVERS
NORMAL_DRIVERS=y
endif
+COBJS-$(CONFIG_SPL_NAND_AM33XX_BCH) += am335x_spl_bch.o
COBJS-$(CONFIG_SPL_NAND_SIMPLE) += nand_spl_simple.o
COBJS-$(CONFIG_SPL_NAND_LOAD) += nand_spl_load.o
COBJS-$(CONFIG_SPL_NAND_ECC) += nand_ecc.o
@@ -78,10 +79,6 @@ COBJS-$(CONFIG_TEGRA_NAND) += tegra_nand.o
COBJS-$(CONFIG_NAND_OMAP_GPMC) += omap_gpmc.o
COBJS-$(CONFIG_NAND_PLAT) += nand_plat.o
-else # minimal SPL drivers
-
-COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_spl.o
-
endif # drivers
endif # nand
diff --git a/drivers/mtd/nand/am335x_spl_bch.c b/drivers/mtd/nand/am335x_spl_bch.c
new file mode 100644
index 000000000..b84528ba3
--- /dev/null
+++ b/drivers/mtd/nand/am335x_spl_bch.c
@@ -0,0 +1,238 @@
+/*
+ * (C) Copyright 2012
+ * Konstantin Kozhevnikov, Cogent Embedded
+ *
+ * based on nand_spl_simple code
+ *
+ * (C) Copyright 2006-2008
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <common.h>
+#include <nand.h>
+#include <asm/io.h>
+#include <linux/mtd/nand_ecc.h>
+
+static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS;
+static nand_info_t mtd;
+static struct nand_chip nand_chip;
+
+#define ECCSTEPS (CONFIG_SYS_NAND_PAGE_SIZE / \
+ CONFIG_SYS_NAND_ECCSIZE)
+#define ECCTOTAL (ECCSTEPS * CONFIG_SYS_NAND_ECCBYTES)
+
+
+/*
+ * NAND command for large page NAND devices (2k)
+ */
+static int nand_command(int block, int page, uint32_t offs,
+ u8 cmd)
+{
+ struct nand_chip *this = mtd.priv;
+ int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT;
+ void (*hwctrl)(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl) = this->cmd_ctrl;
+
+ while (!this->dev_ready(&mtd))
+ ;
+
+ /* Emulate NAND_CMD_READOOB */
+ if (cmd == NAND_CMD_READOOB) {
+ offs += CONFIG_SYS_NAND_PAGE_SIZE;
+ cmd = NAND_CMD_READ0;
+ }
+
+ /* Begin command latch cycle */
+ hwctrl(&mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+
+ if (cmd == NAND_CMD_RESET) {
+ hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+ while (!this->dev_ready(&mtd))
+ ;
+ return 0;
+ }
+
+ /* Shift the offset from byte addressing to word addressing. */
+ if (this->options & NAND_BUSWIDTH_16)
+ offs >>= 1;
+
+ /* Set ALE and clear CLE to start address cycle */
+ /* Column address */
+ hwctrl(&mtd, offs & 0xff,
+ NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */
+ hwctrl(&mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
+ /* Row address */
+ hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
+ hwctrl(&mtd, ((page_addr >> 8) & 0xff),
+ NAND_CTRL_ALE); /* A[27:20] */
+#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE
+ /* One more address cycle for devices > 128MiB */
+ hwctrl(&mtd, (page_addr >> 16) & 0x0f,
+ NAND_CTRL_ALE); /* A[31:28] */
+#endif
+ hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+
+ if (cmd == NAND_CMD_READ0) {
+ /* Latch in address */
+ hwctrl(&mtd, NAND_CMD_READSTART,
+ NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+ hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+
+ /*
+ * Wait a while for the data to be ready
+ */
+ while (!this->dev_ready(&mtd))
+ ;
+ } else if (cmd == NAND_CMD_RNDOUT) {
+ hwctrl(&mtd, NAND_CMD_RNDOUTSTART, NAND_CTRL_CLE |
+ NAND_CTRL_CHANGE);
+ hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+ }
+
+ return 0;
+}
+
+static int nand_is_bad_block(int block)
+{
+ struct nand_chip *this = mtd.priv;
+
+ nand_command(block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS,
+ NAND_CMD_READOOB);
+
+ /*
+ * Read one byte (or two if it's a 16 bit chip).
+ */
+ if (this->options & NAND_BUSWIDTH_16) {
+ if (readw(this->IO_ADDR_R) != 0xffff)
+ return 1;
+ } else {
+ if (readb(this->IO_ADDR_R) != 0xff)
+ return 1;
+ }
+
+ return 0;
+}
+
+static int nand_read_page(int block, int page, void *dst)
+{
+ struct nand_chip *this = mtd.priv;
+ u_char ecc_calc[ECCTOTAL];
+ u_char ecc_code[ECCTOTAL];
+ u_char oob_data[CONFIG_SYS_NAND_OOBSIZE];
+ int i;
+ int eccsize = CONFIG_SYS_NAND_ECCSIZE;
+ int eccbytes = CONFIG_SYS_NAND_ECCBYTES;
+ int eccsteps = ECCSTEPS;
+ uint8_t *p = dst;
+ uint32_t data_pos = 0;
+ uint8_t *oob = &oob_data[0] + nand_ecc_pos[0];
+ uint32_t oob_pos = eccsize * eccsteps + nand_ecc_pos[0];
+
+ nand_command(block, page, 0, NAND_CMD_READ0);
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ this->ecc.hwctl(&mtd, NAND_ECC_READ);
+ nand_command(block, page, data_pos, NAND_CMD_RNDOUT);
+
+ this->read_buf(&mtd, p, eccsize);
+
+ nand_command(block, page, oob_pos, NAND_CMD_RNDOUT);
+
+ this->read_buf(&mtd, oob, eccbytes);
+ this->ecc.calculate(&mtd, p, &ecc_calc[i]);
+
+ data_pos += eccsize;
+ oob_pos += eccbytes;
+ oob += eccbytes;
+ }
+
+ /* Pick the ECC bytes out of the oob data */
+ for (i = 0; i < ECCTOTAL; i++)
+ ecc_code[i] = oob_data[nand_ecc_pos[i]];
+
+ eccsteps = ECCSTEPS;
+ p = dst;
+
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ /* No chance to do something with the possible error message
+ * from correct_data(). We just hope that all possible errors
+ * are corrected by this routine.
+ */
+ this->ecc.correct(&mtd, p, &ecc_code[i], &ecc_calc[i]);
+ }
+
+ return 0;
+}
+
+int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst)
+{
+ unsigned int block, lastblock;
+ unsigned int page;
+
+ /*
+ * offs has to be aligned to a page address!
+ */
+ block = offs / CONFIG_SYS_NAND_BLOCK_SIZE;
+ lastblock = (offs + size - 1) / CONFIG_SYS_NAND_BLOCK_SIZE;
+ page = (offs % CONFIG_SYS_NAND_BLOCK_SIZE) / CONFIG_SYS_NAND_PAGE_SIZE;
+
+ while (block <= lastblock) {
+ if (!nand_is_bad_block(block)) {
+ /*
+ * Skip bad blocks
+ */
+ while (page < CONFIG_SYS_NAND_PAGE_COUNT) {
+ nand_read_page(block, page, dst);
+ dst += CONFIG_SYS_NAND_PAGE_SIZE;
+ page++;
+ }
+
+ page = 0;
+ } else {
+ lastblock++;
+ }
+
+ block++;
+ }
+
+ return 0;
+}
+
+/* nand_init() - initialize data to make nand usable by SPL */
+void nand_init(void)
+{
+ /*
+ * Init board specific nand support
+ */
+ mtd.priv = &nand_chip;
+ nand_chip.IO_ADDR_R = nand_chip.IO_ADDR_W =
+ (void __iomem *)CONFIG_SYS_NAND_BASE;
+ board_nand_init(&nand_chip);
+
+ if (nand_chip.select_chip)
+ nand_chip.select_chip(&mtd, 0);
+
+ /* NAND chip may require reset after power-on */
+ nand_command(0, 0, 0, NAND_CMD_RESET);
+}
+
+/* Unselect after operation */
+void nand_deselect(void)
+{
+ if (nand_chip.select_chip)
+ nand_chip.select_chip(&mtd, -1);
+}
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c
index f1469d110..cee394ece 100644
--- a/drivers/mtd/nand/omap_gpmc.c
+++ b/drivers/mtd/nand/omap_gpmc.c
@@ -29,6 +29,9 @@
#include <linux/mtd/nand_ecc.h>
#include <linux/compiler.h>
#include <nand.h>
+#ifdef CONFIG_AM33XX
+#include <asm/arch/elm.h>
+#endif
static uint8_t cs;
static __maybe_unused struct nand_ecclayout hw_nand_oob =
@@ -234,6 +237,370 @@ static void __maybe_unused omap_enable_hwecc(struct mtd_info *mtd, int32_t mode)
}
}
+/*
+ * BCH8 support (needs ELM and thus AM33xx-only)
+ */
+#ifdef CONFIG_AM33XX
+struct nand_bch_priv {
+ uint8_t mode;
+ uint8_t type;
+ uint8_t nibbles;
+};
+
+/* bch types */
+#define ECC_BCH4 0
+#define ECC_BCH8 1
+#define ECC_BCH16 2
+
+/* BCH nibbles for diff bch levels */
+#define NAND_ECC_HW_BCH ((uint8_t)(NAND_ECC_HW_OOB_FIRST) + 1)
+#define ECC_BCH4_NIBBLES 13
+#define ECC_BCH8_NIBBLES 26
+#define ECC_BCH16_NIBBLES 52
+
+static struct nand_ecclayout hw_bch8_nand_oob = GPMC_NAND_HW_BCH8_ECC_LAYOUT;
+
+static struct nand_bch_priv bch_priv = {
+ .mode = NAND_ECC_HW_BCH,
+ .type = ECC_BCH8,
+ .nibbles = ECC_BCH8_NIBBLES
+};
+
+/*
+ * omap_read_bch8_result - Read BCH result for BCH8 level
+ *
+ * @mtd: MTD device structure
+ * @big_endian: When set read register 3 first
+ * @ecc_code: Read syndrome from BCH result registers
+ */
+static void omap_read_bch8_result(struct mtd_info *mtd, uint8_t big_endian,
+ uint8_t *ecc_code)
+{
+ uint32_t *ptr;
+ int8_t i = 0, j;
+
+ if (big_endian) {
+ ptr = &gpmc_cfg->bch_result_0_3[0].bch_result_x[3];
+ ecc_code[i++] = readl(ptr) & 0xFF;
+ ptr--;
+ for (j = 0; j < 3; j++) {
+ ecc_code[i++] = (readl(ptr) >> 24) & 0xFF;
+ ecc_code[i++] = (readl(ptr) >> 16) & 0xFF;
+ ecc_code[i++] = (readl(ptr) >> 8) & 0xFF;
+ ecc_code[i++] = readl(ptr) & 0xFF;
+ ptr--;
+ }
+ } else {
+ ptr = &gpmc_cfg->bch_result_0_3[0].bch_result_x[0];
+ for (j = 0; j < 3; j++) {
+ ecc_code[i++] = readl(ptr) & 0xFF;
+ ecc_code[i++] = (readl(ptr) >> 8) & 0xFF;
+ ecc_code[i++] = (readl(ptr) >> 16) & 0xFF;
+ ecc_code[i++] = (readl(ptr) >> 24) & 0xFF;
+ ptr++;
+ }
+ ecc_code[i++] = readl(ptr) & 0xFF;
+ ecc_code[i++] = 0; /* 14th byte is always zero */
+ }
+}
+
+/*
+ * omap_ecc_disable - Disable H/W ECC calculation
+ *
+ * @mtd: MTD device structure
+ *
+ */
+static void omap_ecc_disable(struct mtd_info *mtd)
+{
+ writel((readl(&gpmc_cfg->ecc_config) & ~0x1),
+ &gpmc_cfg->ecc_config);
+}
+
+/*
+ * omap_rotate_ecc_bch - Rotate the syndrome bytes
+ *
+ * @mtd: MTD device structure
+ * @calc_ecc: ECC read from ECC registers
+ * @syndrome: Rotated syndrome will be retuned in this array
+ *
+ */
+static void omap_rotate_ecc_bch(struct mtd_info *mtd, uint8_t *calc_ecc,
+ uint8_t *syndrome)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct nand_bch_priv *bch = chip->priv;
+ uint8_t n_bytes = 0;
+ int8_t i, j;
+
+ switch (bch->type) {
+ case ECC_BCH4:
+ n_bytes = 8;
+ break;
+
+ case ECC_BCH16:
+ n_bytes = 28;
+ break;
+
+ case ECC_BCH8:
+ default:
+ n_bytes = 13;
+ break;
+ }
+
+ for (i = 0, j = (n_bytes-1); i < n_bytes; i++, j--)
+ syndrome[i] = calc_ecc[j];
+}
+
+/*
+ * omap_calculate_ecc_bch - Read BCH ECC result
+ *
+ * @mtd: MTD structure
+ * @dat: unused
+ * @ecc_code: ecc_code buffer
+ */
+static int omap_calculate_ecc_bch(struct mtd_info *mtd, const uint8_t *dat,
+ uint8_t *ecc_code)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct nand_bch_priv *bch = chip->priv;
+ uint8_t big_endian = 1;
+ int8_t ret = 0;
+
+ if (bch->type == ECC_BCH8)
+ omap_read_bch8_result(mtd, big_endian, ecc_code);
+ else /* BCH4 and BCH16 currently not supported */
+ ret = -1;
+
+ /*
+ * Stop reading anymore ECC vals and clear old results
+ * enable will be called if more reads are required
+ */
+ omap_ecc_disable(mtd);
+
+ return ret;
+}
+
+/*
+ * omap_fix_errors_bch - Correct bch error in the data
+ *
+ * @mtd: MTD device structure
+ * @data: Data read from flash
+ * @error_count:Number of errors in data
+ * @error_loc: Locations of errors in the data
+ *
+ */
+static void omap_fix_errors_bch(struct mtd_info *mtd, uint8_t *data,
+ uint32_t error_count, uint32_t *error_loc)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct nand_bch_priv *bch = chip->priv;
+ uint8_t count = 0;
+ uint32_t error_byte_pos;
+ uint32_t error_bit_mask;
+ uint32_t last_bit = (bch->nibbles * 4) - 1;
+
+ /* Flip all bits as specified by the error location array. */
+ /* FOR( each found error location flip the bit ) */
+ for (count = 0; count < error_count; count++) {
+ if (error_loc[count] > last_bit) {
+ /* Remove the ECC spare bits from correction. */
+ error_loc[count] -= (last_bit + 1);
+ /* Offset bit in data region */
+ error_byte_pos = ((512 * 8) -
+ (error_loc[count]) - 1) / 8;
+ /* Error Bit mask */
+ error_bit_mask = 0x1 << (error_loc[count] % 8);
+ /* Toggle the error bit to make the correction. */
+ data[error_byte_pos] ^= error_bit_mask;
+ }
+ }
+}
+
+/*
+ * omap_correct_data_bch - Compares the ecc read from nand spare area
+ * with ECC registers values and corrects one bit error if it has occured
+ *
+ * @mtd: MTD device structure
+ * @dat: page data
+ * @read_ecc: ecc read from nand flash (ignored)
+ * @calc_ecc: ecc read from ECC registers
+ *
+ * @return 0 if data is OK or corrected, else returns -1
+ */
+static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat,
+ uint8_t *read_ecc, uint8_t *calc_ecc)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct nand_bch_priv *bch = chip->priv;
+ uint8_t syndrome[28];
+ uint32_t error_count = 0;
+ uint32_t error_loc[8];
+ uint32_t i, ecc_flag;
+
+ ecc_flag = 0;
+ for (i = 0; i < chip->ecc.bytes; i++)
+ if (read_ecc[i] != 0xff)
+ ecc_flag = 1;
+
+ if (!ecc_flag)
+ return 0;
+
+ elm_reset();
+ elm_config((enum bch_level)(bch->type));
+
+ /*
+ * while reading ECC result we read it in big endian.
+ * Hence while loading to ELM we have rotate to get the right endian.
+ */
+ omap_rotate_ecc_bch(mtd, calc_ecc, syndrome);
+
+ /* use elm module to check for errors */
+ if (elm_check_error(syndrome, bch->nibbles, &error_count,
+ error_loc) != 0) {
+ printf("ECC: uncorrectable.\n");
+ return -1;
+ }
+
+ /* correct bch error */
+ if (error_count > 0)
+ omap_fix_errors_bch(mtd, dat, error_count, error_loc);
+
+ return 0;
+}
+/*
+ * omap_hwecc_init_bch - Initialize the BCH Hardware ECC for NAND flash in
+ * GPMC controller
+ * @mtd: MTD device structure
+ * @mode: Read/Write mode
+ */
+static void omap_hwecc_init_bch(struct nand_chip *chip, int32_t mode)
+{
+ uint32_t val, dev_width = (chip->options & NAND_BUSWIDTH_16) >> 1;
+ uint32_t unused_length = 0;
+ struct nand_bch_priv *bch = chip->priv;
+
+ switch (bch->nibbles) {
+ case ECC_BCH4_NIBBLES:
+ unused_length = 3;
+ break;
+ case ECC_BCH8_NIBBLES:
+ unused_length = 2;
+ break;
+ case ECC_BCH16_NIBBLES:
+ unused_length = 0;
+ break;
+ }
+
+ /* Clear the ecc result registers, select ecc reg as 1 */
+ writel(ECCCLEAR | ECCRESULTREG1, &gpmc_cfg->ecc_control);
+
+ switch (mode) {
+ case NAND_ECC_WRITE:
+ /* eccsize1 config */
+ val = ((unused_length + bch->nibbles) << 22);
+ break;
+
+ case NAND_ECC_READ:
+ default:
+ /* by default eccsize0 selected for ecc1resultsize */
+ /* eccsize0 config */
+ val = (bch->nibbles << 12);
+ /* eccsize1 config */
+ val |= (unused_length << 22);
+ break;
+ }
+ /* ecc size configuration */
+ writel(val, &gpmc_cfg->ecc_size_config);
+ /* by default 512bytes sector page is selected */
+ /* set bch mode */
+ val = (1 << 16);
+ /* bch4 / bch8 / bch16 */
+ val |= (bch->type << 12);
+ /* set wrap mode to 1 */
+ val |= (1 << 8);
+ val |= (dev_width << 7);
+ val |= (cs << 1);
+ writel(val, &gpmc_cfg->ecc_config);
+}
+
+/*
+ * omap_enable_ecc_bch- This function enables the bch h/w ecc functionality
+ * @mtd: MTD device structure
+ * @mode: Read/Write mode
+ *
+ */
+static void omap_enable_ecc_bch(struct mtd_info *mtd, int32_t mode)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ omap_hwecc_init_bch(chip, mode);
+ /* enable ecc */
+ writel((readl(&gpmc_cfg->ecc_config) | 0x1), &gpmc_cfg->ecc_config);
+}
+
+/**
+ * omap_read_page_bch - hardware ecc based page read function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
+ * @page: page number to read
+ *
+ */
+static int omap_read_page_bch(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int page)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+ uint32_t *eccpos = chip->ecc.layout->eccpos;
+ uint8_t *oob = chip->oob_poi;
+ uint32_t data_pos;
+ uint32_t oob_pos;
+
+ data_pos = 0;
+ /* oob area start */
+ oob_pos = (eccsize * eccsteps) + chip->ecc.layout->eccpos[0];
+ oob += chip->ecc.layout->eccpos[0];
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize,
+ oob += eccbytes) {
+ chip->ecc.hwctl(mtd, NAND_ECC_READ);
+ /* read data */
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_pos, page);
+ chip->read_buf(mtd, p, eccsize);
+
+ /* read respective ecc from oob area */
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, oob_pos, page);
+ chip->read_buf(mtd, oob, eccbytes);
+ /* read syndrome */
+ chip->ecc.calculate(mtd, p, &ecc_calc[i]);
+
+ data_pos += eccsize;
+ oob_pos += eccbytes;
+ }
+
+ for (i = 0; i < chip->ecc.total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+
+ eccsteps = chip->ecc.steps;
+ p = buf;
+
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+ stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+ if (stat < 0)
+ mtd->ecc_stats.failed++;
+ else
+ mtd->ecc_stats.corrected += stat;
+ }
+ return 0;
+}
+#endif /* CONFIG_AM33XX */
+
#ifndef CONFIG_SPL_BUILD
/*
* omap_nand_switch_ecc - switch the ECC operation b/w h/w ecc and s/w ecc.
@@ -269,7 +636,7 @@ void omap_nand_switch_ecc(int32_t hardware)
nand->ecc.calculate = NULL;
/* Setup the ecc configurations again */
- if (hardware) {
+ if (hardware == 1) {
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.layout = &hw_nand_oob;
nand->ecc.size = 512;
@@ -279,6 +646,19 @@ void omap_nand_switch_ecc(int32_t hardware)
nand->ecc.calculate = omap_calculate_ecc;
omap_hwecc_init(nand);
printf("HW ECC selected\n");
+#ifdef CONFIG_AM33XX
+ } else if (hardware == 2) {
+ nand->ecc.mode = NAND_ECC_HW;
+ nand->ecc.layout = &hw_bch8_nand_oob;
+ nand->ecc.size = 512;
+ nand->ecc.bytes = 14;
+ nand->ecc.read_page = omap_read_page_bch;
+ nand->ecc.hwctl = omap_enable_ecc_bch;
+ nand->ecc.correct = omap_correct_data_bch;
+ nand->ecc.calculate = omap_calculate_ecc_bch;
+ omap_hwecc_init_bch(nand, NAND_ECC_READ);
+ printf("HW BCH8 selected\n");
+#endif
} else {
nand->ecc.mode = NAND_ECC_SOFT;
/* Use mtd default settings */
@@ -350,7 +730,27 @@ int board_nand_init(struct nand_chip *nand)
nand->options |= NAND_BUSWIDTH_16;
nand->chip_delay = 100;
+
+#ifdef CONFIG_AM33XX
+ /* required in case of BCH */
+ elm_init();
+
+ /* BCH info that will be correct for SPL or overridden otherwise. */
+ nand->priv = &bch_priv;
+#endif
+
/* Default ECC mode */
+#ifdef CONFIG_AM33XX
+ nand->ecc.mode = NAND_ECC_HW;
+ nand->ecc.layout = &hw_bch8_nand_oob;
+ nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE;
+ nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES;
+ nand->ecc.hwctl = omap_enable_ecc_bch;
+ nand->ecc.correct = omap_correct_data_bch;
+ nand->ecc.calculate = omap_calculate_ecc_bch;
+ nand->ecc.read_page = omap_read_page_bch;
+ omap_hwecc_init_bch(nand, NAND_ECC_READ);
+#else
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_NAND_SOFTECC)
nand->ecc.mode = NAND_ECC_SOFT;
#else
@@ -363,6 +763,7 @@ int board_nand_init(struct nand_chip *nand)
nand->ecc.calculate = omap_calculate_ecc;
omap_hwecc_init(nand);
#endif
+#endif
#ifdef CONFIG_SPL_BUILD
if (nand->options & NAND_BUSWIDTH_16)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index af3d8593e..db04795df 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -920,7 +920,10 @@ static int cpsw_phy_init(struct eth_device *dev, struct cpsw_slave *slave)
SUPPORTED_100baseT_Full |
SUPPORTED_1000baseT_Full);
- phydev = phy_connect(priv->bus, 0, dev, slave->data->phy_if);
+ phydev = phy_connect(priv->bus,
+ CONFIG_PHY_ADDR,
+ dev,
+ slave->data->phy_if);
phydev->supported &= supported;
phydev->advertising = phydev->supported;
diff --git a/drivers/power/twl6035.c b/drivers/power/twl6035.c
index 624c09e85..d3de698cd 100644
--- a/drivers/power/twl6035.c
+++ b/drivers/power/twl6035.c
@@ -50,16 +50,25 @@ void twl6035_init_settings(void)
return;
}
-void twl6035_mmc1_poweron_ldo(void)
+int twl6035_mmc1_poweron_ldo(void)
{
u8 val = 0;
/* set LDO9 TWL6035 to 3V */
val = 0x2b; /* (3 -.9)*28 +1 */
- palmas_write_u8(0x48, LDO9_VOLTAGE, val);
+
+ if (palmas_write_u8(0x48, LDO9_VOLTAGE, val)) {
+ printf("twl6035: could not set LDO9 voltage.\n");
+ return 1;
+ }
/* TURN ON LDO9 */
val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE;
- palmas_write_u8(0x48, LDO9_CTRL, val);
- return;
+
+ if (palmas_write_u8(0x48, LDO9_CTRL, val)) {
+ printf("twl6035: could not turn on LDO9.\n");
+ return 1;
+ }
+
+ return 0;
}
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index 6791a7e0e..344d5b8a7 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -57,6 +57,20 @@ static void spi_reset(struct omap3_spi_slave *ds)
writel(OMAP3_MCSPI_WAKEUPENABLE_WKEN, &ds->regs->wakeupenable);
}
+static void omap3_spi_write_chconf(struct omap3_spi_slave *ds, int val)
+{
+ writel(val, &ds->regs->channel[ds->slave.cs].chconf);
+ /* Flash post writes to make immediate effect */
+ readl(&ds->regs->channel[ds->slave.cs].chconf);
+}
+
+static void omap3_spi_set_enable(struct omap3_spi_slave *ds, int enable)
+{
+ writel(enable, &ds->regs->channel[ds->slave.cs].chctrl);
+ /* Flash post writes to make immediate effect */
+ readl(&ds->regs->channel[ds->slave.cs].chctrl);
+}
+
void spi_init()
{
/* do nothing */
@@ -212,7 +226,7 @@ int spi_claim_bus(struct spi_slave *slave)
/* Transmit & receive mode */
conf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
- writel(conf, &ds->regs->channel[ds->slave.cs].chconf);
+ omap3_spi_write_chconf(ds,conf);
return 0;
}
@@ -233,14 +247,13 @@ int omap3_spi_write(struct spi_slave *slave, unsigned int len, const u8 *txp,
int timeout = SPI_WAIT_TIMEOUT;
int chconf = readl(&ds->regs->channel[ds->slave.cs].chconf);
- if (flags & SPI_XFER_BEGIN)
- writel(OMAP3_MCSPI_CHCTRL_EN,
- &ds->regs->channel[ds->slave.cs].chctrl);
+ /* Enable the channel */
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_EN);
chconf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
chconf |= OMAP3_MCSPI_CHCONF_TRM_TX_ONLY;
chconf |= OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
+ omap3_spi_write_chconf(ds,chconf);
for (i = 0; i < len; i++) {
/* wait till TX register is empty (TXS == 1) */
@@ -256,15 +269,17 @@ int omap3_spi_write(struct spi_slave *slave, unsigned int len, const u8 *txp,
writel(txp[i], &ds->regs->channel[ds->slave.cs].tx);
}
+ /* wait to finish of transfer */
+ while (!(readl(&ds->regs->channel[ds->slave.cs].chstat) &
+ OMAP3_MCSPI_CHSTAT_EOT));
+
+ /* Disable the channel otherwise the next immediate RX will get affected */
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_DIS);
+
if (flags & SPI_XFER_END) {
- /* wait to finish of transfer */
- while (!(readl(&ds->regs->channel[ds->slave.cs].chstat) &
- OMAP3_MCSPI_CHSTAT_EOT));
chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
-
- writel(0, &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_write_chconf(ds,chconf);
}
return 0;
}
@@ -277,14 +292,13 @@ int omap3_spi_read(struct spi_slave *slave, unsigned int len, u8 *rxp,
int timeout = SPI_WAIT_TIMEOUT;
int chconf = readl(&ds->regs->channel[ds->slave.cs].chconf);
- if (flags & SPI_XFER_BEGIN)
- writel(OMAP3_MCSPI_CHCTRL_EN,
- &ds->regs->channel[ds->slave.cs].chctrl);
+ /* Enable the channel */
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_EN);
chconf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
chconf |= OMAP3_MCSPI_CHCONF_TRM_RX_ONLY;
chconf |= OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
+ omap3_spi_write_chconf(ds,chconf);
writel(0, &ds->regs->channel[ds->slave.cs].tx);
@@ -298,15 +312,18 @@ int omap3_spi_read(struct spi_slave *slave, unsigned int len, u8 *rxp,
return -1;
}
}
+
+ /* Disable the channel to prevent furher receiving */
+ if(i == (len - 1))
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_DIS);
+
/* Read the data */
rxp[i] = readl(&ds->regs->channel[ds->slave.cs].rx);
}
if (flags & SPI_XFER_END) {
chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
-
- writel(0, &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_write_chconf(ds,chconf);
}
return 0;
@@ -323,14 +340,12 @@ int omap3_spi_txrx(struct spi_slave *slave,
int i=0;
/*Enable SPI channel*/
- if (flags & SPI_XFER_BEGIN)
- writel(OMAP3_MCSPI_CHCTRL_EN,
- &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_EN);
/*set TRANSMIT-RECEIVE Mode*/
chconf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
chconf |= OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
+ omap3_spi_write_chconf(ds,chconf);
/*Shift in and out 1 byte at time*/
for (i=0; i < len; i++){
@@ -359,13 +374,13 @@ int omap3_spi_txrx(struct spi_slave *slave,
/* Read the data */
rxp[i] = readl(&ds->regs->channel[ds->slave.cs].rx);
}
+ /* Disable the channel */
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_DIS);
/*if transfer must be terminated disable the channel*/
if (flags & SPI_XFER_END) {
chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf, &ds->regs->channel[ds->slave.cs].chconf);
-
- writel(0, &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_write_chconf(ds,chconf);
}
return 0;
@@ -389,17 +404,14 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
int chconf = readl(&ds->regs->channel[ds->slave.cs].chconf);
if (flags & SPI_XFER_BEGIN) {
- writel(OMAP3_MCSPI_CHCTRL_EN,
- &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_EN);
chconf |= OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf,
- &ds->regs->channel[ds->slave.cs].chconf);
+ omap3_spi_write_chconf(ds,chconf);
}
if (flags & SPI_XFER_END) {
chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
- writel(chconf,
- &ds->regs->channel[ds->slave.cs].chconf);
- writel(0, &ds->regs->channel[ds->slave.cs].chctrl);
+ omap3_spi_write_chconf(ds,chconf);
+ omap3_spi_set_enable(ds,OMAP3_MCSPI_CHCTRL_DIS);
}
ret = 0;
} else {
diff --git a/drivers/spi/omap3_spi.h b/drivers/spi/omap3_spi.h
index bffa43cb6..5e00208c5 100644
--- a/drivers/spi/omap3_spi.h
+++ b/drivers/spi/omap3_spi.h
@@ -99,6 +99,7 @@ struct mcspi {
#define OMAP3_MCSPI_CHSTAT_EOT (1 << 2)
#define OMAP3_MCSPI_CHCTRL_EN (1 << 0)
+#define OMAP3_MCSPI_CHCTRL_DIS (0 << 0)
#define OMAP3_MCSPI_WAKEUPENABLE_WKEN (1 << 0)
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 19:49:24 +0000