diff options
Diffstat (limited to 'drivers/i2c/s3c24x0_i2c.c')
| -rw-r--r-- | drivers/i2c/s3c24x0_i2c.c | 1136 |
1 files changed, 9 insertions, 1127 deletions
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c index eab49d0..2ece9f4 100644 --- a/drivers/i2c/s3c24x0_i2c.c +++ b/drivers/i2c/s3c24x0_i2c.c @@ -24,170 +24,9 @@ #include <i2c.h> #include "s3c24x0_i2c.h" -#define I2C_WRITE 0 -#define I2C_READ 1 - -#define I2C_OK 0 -#define I2C_NOK 1 -#define I2C_NACK 2 -#define I2C_NOK_LA 3 /* Lost arbitration */ -#define I2C_NOK_TOUT 4 /* time out */ - -/* HSI2C specific register description */ - -/* I2C_CTL Register bits */ -#define HSI2C_FUNC_MODE_I2C (1u << 0) -#define HSI2C_MASTER (1u << 3) -#define HSI2C_RXCHON (1u << 6) /* Write/Send */ -#define HSI2C_TXCHON (1u << 7) /* Read/Receive */ -#define HSI2C_SW_RST (1u << 31) - -/* I2C_FIFO_CTL Register bits */ -#define HSI2C_RXFIFO_EN (1u << 0) -#define HSI2C_TXFIFO_EN (1u << 1) -#define HSI2C_TXFIFO_TRIGGER_LEVEL (0x20 << 16) -#define HSI2C_RXFIFO_TRIGGER_LEVEL (0x20 << 4) - -/* I2C_TRAILING_CTL Register bits */ -#define HSI2C_TRAILING_COUNT (0xff) - -/* I2C_INT_EN Register bits */ -#define HSI2C_TX_UNDERRUN_EN (1u << 2) -#define HSI2C_TX_OVERRUN_EN (1u << 3) -#define HSI2C_RX_UNDERRUN_EN (1u << 4) -#define HSI2C_RX_OVERRUN_EN (1u << 5) -#define HSI2C_INT_TRAILING_EN (1u << 6) -#define HSI2C_INT_I2C_EN (1u << 9) - -#define HSI2C_INT_ERROR_MASK (HSI2C_TX_UNDERRUN_EN |\ - HSI2C_TX_OVERRUN_EN |\ - HSI2C_RX_UNDERRUN_EN |\ - HSI2C_RX_OVERRUN_EN |\ - HSI2C_INT_TRAILING_EN) - -/* I2C_CONF Register bits */ -#define HSI2C_AUTO_MODE (1u << 31) -#define HSI2C_10BIT_ADDR_MODE (1u << 30) -#define HSI2C_HS_MODE (1u << 29) - -/* I2C_AUTO_CONF Register bits */ -#define HSI2C_READ_WRITE (1u << 16) -#define HSI2C_STOP_AFTER_TRANS (1u << 17) -#define HSI2C_MASTER_RUN (1u << 31) - -/* I2C_TIMEOUT Register bits */ -#define HSI2C_TIMEOUT_EN (1u << 31) - -/* I2C_TRANS_STATUS register bits */ -#define HSI2C_MASTER_BUSY (1u << 17) -#define HSI2C_SLAVE_BUSY (1u << 16) -#define HSI2C_TIMEOUT_AUTO (1u << 4) -#define HSI2C_NO_DEV (1u << 3) -#define HSI2C_NO_DEV_ACK (1u << 2) -#define HSI2C_TRANS_ABORT (1u << 1) -#define HSI2C_TRANS_SUCCESS (1u << 0) -#define HSI2C_TRANS_ERROR_MASK (HSI2C_TIMEOUT_AUTO |\ - HSI2C_NO_DEV | HSI2C_NO_DEV_ACK |\ - HSI2C_TRANS_ABORT) -#define HSI2C_TRANS_FINISHED_MASK (HSI2C_TRANS_ERROR_MASK | HSI2C_TRANS_SUCCESS) - - -/* I2C_FIFO_STAT Register bits */ -#define HSI2C_RX_FIFO_EMPTY (1u << 24) -#define HSI2C_RX_FIFO_FULL (1u << 23) -#define HSI2C_TX_FIFO_EMPTY (1u << 8) -#define HSI2C_TX_FIFO_FULL (1u << 7) -#define HSI2C_RX_FIFO_LEVEL(x) (((x) >> 16) & 0x7f) -#define HSI2C_TX_FIFO_LEVEL(x) ((x) & 0x7f) - -#define HSI2C_SLV_ADDR_MAS(x) ((x & 0x3ff) << 10) - -/* S3C I2C Controller bits */ -#define I2CSTAT_BSY 0x20 /* Busy bit */ -#define I2CSTAT_NACK 0x01 /* Nack bit */ -#define I2CCON_ACKGEN 0x80 /* Acknowledge generation */ -#define I2CCON_IRPND 0x10 /* Interrupt pending bit */ -#define I2C_MODE_MT 0xC0 /* Master Transmit Mode */ -#define I2C_MODE_MR 0x80 /* Master Receive Mode */ -#define I2C_START_STOP 0x20 /* START / STOP */ -#define I2C_TXRX_ENA 0x10 /* I2C Tx/Rx enable */ - -#define I2C_TIMEOUT_MS 10 /* 10 ms */ - -#define HSI2C_TIMEOUT_US 10000 /* 10 ms, finer granularity */ - - -/* To support VCMA9 boards and other who dont define max_i2c_num */ -#ifndef CONFIG_MAX_I2C_NUM -#define CONFIG_MAX_I2C_NUM 1 -#endif - DECLARE_GLOBAL_DATA_PTR; /* - * For SPL boot some boards need i2c before SDRAM is initialised so force - * variables to live in SRAM - */ -#ifdef CONFIG_SYS_I2C -static struct s3c24x0_i2c_bus i2c_bus[CONFIG_MAX_I2C_NUM] - __attribute__((section(".data"))); -#endif - -enum exynos_i2c_type { - EXYNOS_I2C_STD, - EXYNOS_I2C_HS, -}; - -#ifdef CONFIG_SYS_I2C -/** - * Get a pointer to the given bus index - * - * @bus_idx: Bus index to look up - * @return pointer to bus, or NULL if invalid or not available - */ -static struct s3c24x0_i2c_bus *get_bus(unsigned int bus_idx) -{ - if (bus_idx < ARRAY_SIZE(i2c_bus)) { - struct s3c24x0_i2c_bus *bus; - - bus = &i2c_bus[bus_idx]; - if (bus->active) - return bus; - } - - debug("Undefined bus: %d\n", bus_idx); - return NULL; -} -#endif - -#if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) -static int GetI2CSDA(void) -{ - struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); - -#if defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440) - return (readl(&gpio->gpedat) & 0x8000) >> 15; -#endif -#ifdef CONFIG_S3C2400 - return (readl(&gpio->pgdat) & 0x0020) >> 5; -#endif -} - -static void SetI2CSCL(int x) -{ - struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); - -#if defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440) - writel((readl(&gpio->gpedat) & ~0x4000) | - (x & 1) << 14, &gpio->gpedat); -#endif -#ifdef CONFIG_S3C2400 - writel((readl(&gpio->pgdat) & ~0x0040) | (x & 1) << 6, &gpio->pgdat); -#endif -} -#endif - -/* * Wait til the byte transfer is completed. * * @param i2c- pointer to the appropriate i2c register bank. @@ -209,79 +48,11 @@ static int WaitForXfer(struct s3c24x0_i2c *i2c) return I2C_NOK_TOUT; } -/* - * Wait for transfer completion. - * - * This function reads the interrupt status register waiting for the INT_I2C - * bit to be set, which indicates copletion of a transaction. - * - * @param i2c: pointer to the appropriate register bank - * - * @return: I2C_OK in case of successful completion, I2C_NOK_TIMEOUT in case - * the status bits do not get set in time, or an approrpiate error - * value in case of transfer errors. - */ -static int hsi2c_wait_for_trx(struct exynos5_hsi2c *i2c) -{ - int i = HSI2C_TIMEOUT_US; - - while (i-- > 0) { - u32 int_status = readl(&i2c->usi_int_stat); - - if (int_status & HSI2C_INT_I2C_EN) { - u32 trans_status = readl(&i2c->usi_trans_status); - - /* Deassert pending interrupt. */ - writel(int_status, &i2c->usi_int_stat); - - if (trans_status & HSI2C_NO_DEV_ACK) { - debug("%s: no ACK from device\n", __func__); - return I2C_NACK; - } - if (trans_status & HSI2C_NO_DEV) { - debug("%s: no device\n", __func__); - return I2C_NOK; - } - if (trans_status & HSI2C_TRANS_ABORT) { - debug("%s: arbitration lost\n", __func__); - return I2C_NOK_LA; - } - if (trans_status & HSI2C_TIMEOUT_AUTO) { - debug("%s: device timed out\n", __func__); - return I2C_NOK_TOUT; - } - return I2C_OK; - } - udelay(1); - } - debug("%s: transaction timeout!\n", __func__); - return I2C_NOK_TOUT; -} - static void read_write_byte(struct s3c24x0_i2c *i2c) { clrbits_le32(&i2c->iiccon, I2CCON_IRPND); } -#ifdef CONFIG_SYS_I2C -static struct s3c24x0_i2c *get_base_i2c(int bus) -{ -#ifdef CONFIG_EXYNOS4 - struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() - + (EXYNOS4_I2C_SPACING - * bus)); - return i2c; -#elif defined CONFIG_EXYNOS5 - struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() - + (EXYNOS5_I2C_SPACING - * bus)); - return i2c; -#else - return s3c24x0_get_base_i2c(); -#endif -} -#endif - static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd) { ulong freq, pres = 16, div; @@ -309,438 +80,14 @@ static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd) writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat); } -static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus) -{ - struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; - ulong clkin; - unsigned int op_clk = i2c_bus->clock_frequency; - unsigned int i = 0, utemp0 = 0, utemp1 = 0; - unsigned int t_ftl_cycle; - -#if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) - clkin = get_i2c_clk(); -#else - clkin = get_PCLK(); -#endif - /* FPCLK / FI2C = - * (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) + 8 + 2 * FLT_CYCLE - * uTemp0 = (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) - * uTemp1 = (TSCLK_L + TSCLK_H + 2) - * uTemp2 = TSCLK_L + TSCLK_H - */ - t_ftl_cycle = (readl(&hsregs->usi_conf) >> 16) & 0x7; - utemp0 = (clkin / op_clk) - 8 - 2 * t_ftl_cycle; - - /* CLK_DIV max is 256 */ - for (i = 0; i < 256; i++) { - utemp1 = utemp0 / (i + 1); - if ((utemp1 < 512) && (utemp1 > 4)) { - i2c_bus->clk_cycle = utemp1 - 2; - i2c_bus->clk_div = i; - return 0; - } - } - return -EINVAL; -} - -static void hsi2c_ch_init(struct s3c24x0_i2c_bus *i2c_bus) -{ - struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; - unsigned int t_sr_release; - unsigned int n_clkdiv; - unsigned int t_start_su, t_start_hd; - unsigned int t_stop_su; - unsigned int t_data_su, t_data_hd; - unsigned int t_scl_l, t_scl_h; - u32 i2c_timing_s1; - u32 i2c_timing_s2; - u32 i2c_timing_s3; - u32 i2c_timing_sla; - - n_clkdiv = i2c_bus->clk_div; - t_scl_l = i2c_bus->clk_cycle / 2; - t_scl_h = i2c_bus->clk_cycle / 2; - t_start_su = t_scl_l; - t_start_hd = t_scl_l; - t_stop_su = t_scl_l; - t_data_su = t_scl_l / 2; - t_data_hd = t_scl_l / 2; - t_sr_release = i2c_bus->clk_cycle; - - i2c_timing_s1 = t_start_su << 24 | t_start_hd << 16 | t_stop_su << 8; - i2c_timing_s2 = t_data_su << 24 | t_scl_l << 8 | t_scl_h << 0; - i2c_timing_s3 = n_clkdiv << 16 | t_sr_release << 0; - i2c_timing_sla = t_data_hd << 0; - - writel(HSI2C_TRAILING_COUNT, &hsregs->usi_trailing_ctl); - - /* Clear to enable Timeout */ - clrsetbits_le32(&hsregs->usi_timeout, HSI2C_TIMEOUT_EN, 0); - - /* set AUTO mode */ - writel(readl(&hsregs->usi_conf) | HSI2C_AUTO_MODE, &hsregs->usi_conf); - - /* Enable completion conditions' reporting. */ - writel(HSI2C_INT_I2C_EN, &hsregs->usi_int_en); - - /* Enable FIFOs */ - writel(HSI2C_RXFIFO_EN | HSI2C_TXFIFO_EN, &hsregs->usi_fifo_ctl); - - /* Currently operating in Fast speed mode. */ - writel(i2c_timing_s1, &hsregs->usi_timing_fs1); - writel(i2c_timing_s2, &hsregs->usi_timing_fs2); - writel(i2c_timing_s3, &hsregs->usi_timing_fs3); - writel(i2c_timing_sla, &hsregs->usi_timing_sla); -} - -/* SW reset for the high speed bus */ -static void exynos5_i2c_reset(struct s3c24x0_i2c_bus *i2c_bus) -{ - struct exynos5_hsi2c *i2c = i2c_bus->hsregs; - u32 i2c_ctl; - - /* Set and clear the bit for reset */ - i2c_ctl = readl(&i2c->usi_ctl); - i2c_ctl |= HSI2C_SW_RST; - writel(i2c_ctl, &i2c->usi_ctl); - - i2c_ctl = readl(&i2c->usi_ctl); - i2c_ctl &= ~HSI2C_SW_RST; - writel(i2c_ctl, &i2c->usi_ctl); - - /* Initialize the configure registers */ - hsi2c_ch_init(i2c_bus); -} - -#ifdef CONFIG_SYS_I2C -static void s3c24x0_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) -{ - struct s3c24x0_i2c *i2c; - struct s3c24x0_i2c_bus *bus; -#if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) - struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); -#endif - ulong start_time = get_timer(0); - - i2c = get_base_i2c(adap->hwadapnr); - bus = &i2c_bus[adap->hwadapnr]; - if (!bus) - return; - - /* - * In case the previous transfer is still going, wait to give it a - * chance to finish. - */ - while (readl(&i2c->iicstat) & I2CSTAT_BSY) { - if (get_timer(start_time) > I2C_TIMEOUT_MS) { - printf("%s: I2C bus busy for %p\n", __func__, - &i2c->iicstat); - return; - } - } - -#if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) - int i; - - if ((readl(&i2c->iicstat) & I2CSTAT_BSY) || GetI2CSDA() == 0) { -#if defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440) - ulong old_gpecon = readl(&gpio->gpecon); -#endif -#ifdef CONFIG_S3C2400 - ulong old_gpecon = readl(&gpio->pgcon); -#endif - /* bus still busy probably by (most) previously interrupted - transfer */ - -#if defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440) - /* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */ - writel((readl(&gpio->gpecon) & ~0xF0000000) | 0x10000000, - &gpio->gpecon); -#endif -#ifdef CONFIG_S3C2400 - /* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */ - writel((readl(&gpio->pgcon) & ~0x00003c00) | 0x00001000, - &gpio->pgcon); -#endif - - /* toggle I2CSCL until bus idle */ - SetI2CSCL(0); - udelay(1000); - i = 10; - while ((i > 0) && (GetI2CSDA() != 1)) { - SetI2CSCL(1); - udelay(1000); - SetI2CSCL(0); - udelay(1000); - i--; - } - SetI2CSCL(1); - udelay(1000); - - /* restore pin functions */ -#if defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440) - writel(old_gpecon, &gpio->gpecon); -#endif -#ifdef CONFIG_S3C2400 - writel(old_gpecon, &gpio->pgcon); -#endif - } -#endif /* #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) */ - - i2c_ch_init(i2c, speed, slaveadd); - - bus->active = true; - bus->regs = i2c; -} -#endif /* CONFIG_SYS_I2C */ - -/* - * Poll the appropriate bit of the fifo status register until the interface is - * ready to process the next byte or timeout expires. - * - * In addition to the FIFO status register this function also polls the - * interrupt status register to be able to detect unexpected transaction - * completion. - * - * When FIFO is ready to process the next byte, this function returns I2C_OK. - * If in course of polling the INT_I2C assertion is detected, the function - * returns I2C_NOK. If timeout happens before any of the above conditions is - * met - the function returns I2C_NOK_TOUT; - - * @param i2c: pointer to the appropriate i2c register bank. - * @param rx_transfer: set to True if the receive transaction is in progress. - * @return: as described above. - */ -static unsigned hsi2c_poll_fifo(struct exynos5_hsi2c *i2c, bool rx_transfer) -{ - u32 fifo_bit = rx_transfer ? HSI2C_RX_FIFO_EMPTY : HSI2C_TX_FIFO_FULL; - int i = HSI2C_TIMEOUT_US; - - while (readl(&i2c->usi_fifo_stat) & fifo_bit) { - if (readl(&i2c->usi_int_stat) & HSI2C_INT_I2C_EN) { - /* - * There is a chance that assertion of - * HSI2C_INT_I2C_EN and deassertion of - * HSI2C_RX_FIFO_EMPTY happen simultaneously. Let's - * give FIFO status priority and check it one more - * time before reporting interrupt. The interrupt will - * be reported next time this function is called. - */ - if (rx_transfer && - !(readl(&i2c->usi_fifo_stat) & fifo_bit)) - break; - return I2C_NOK; - } - if (!i--) { - debug("%s: FIFO polling timeout!\n", __func__); - return I2C_NOK_TOUT; - } - udelay(1); - } - return I2C_OK; -} - -/* - * Preapre hsi2c transaction, either read or write. - * - * Set up transfer as described in section 27.5.1.2 'I2C Channel Auto Mode' of - * the 5420 UM. - * - * @param i2c: pointer to the appropriate i2c register bank. - * @param chip: slave address on the i2c bus (with read/write bit exlcuded) - * @param len: number of bytes expected to be sent or received - * @param rx_transfer: set to true for receive transactions - * @param: issue_stop: set to true if i2c stop condition should be generated - * after this transaction. - * @return: I2C_NOK_TOUT in case the bus remained busy for HSI2C_TIMEOUT_US, - * I2C_OK otherwise. - */ -static int hsi2c_prepare_transaction(struct exynos5_hsi2c *i2c, - u8 chip, - u16 len, - bool rx_transfer, - bool issue_stop) -{ - u32 conf; - - conf = len | HSI2C_MASTER_RUN; - - if (issue_stop) - conf |= HSI2C_STOP_AFTER_TRANS; - - /* Clear to enable Timeout */ - writel(readl(&i2c->usi_timeout) & ~HSI2C_TIMEOUT_EN, &i2c->usi_timeout); - - /* Set slave address */ - writel(HSI2C_SLV_ADDR_MAS(chip), &i2c->i2c_addr); - - if (rx_transfer) { - /* i2c master, read transaction */ - writel((HSI2C_RXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), - &i2c->usi_ctl); - - /* read up to len bytes, stop after transaction is finished */ - writel(conf | HSI2C_READ_WRITE, &i2c->usi_auto_conf); - } else { - /* i2c master, write transaction */ - writel((HSI2C_TXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), - &i2c->usi_ctl); - - /* write up to len bytes, stop after transaction is finished */ - writel(conf, &i2c->usi_auto_conf); - } - - /* Reset all pending interrupt status bits we care about, if any */ - writel(HSI2C_INT_I2C_EN, &i2c->usi_int_stat); - - return I2C_OK; -} - -/* - * Wait while i2c bus is settling down (mostly stop gets completed). - */ -static int hsi2c_wait_while_busy(struct exynos5_hsi2c *i2c) -{ - int i = HSI2C_TIMEOUT_US; - - while (readl(&i2c->usi_trans_status) & HSI2C_MASTER_BUSY) { - if (!i--) { - debug("%s: bus busy\n", __func__); - return I2C_NOK_TOUT; - } - udelay(1); - } - return I2C_OK; -} - -static int hsi2c_write(struct exynos5_hsi2c *i2c, - unsigned char chip, - unsigned char addr[], - unsigned char alen, - unsigned char data[], - unsigned short len, - bool issue_stop) -{ - int i, rv = 0; - - if (!(len + alen)) { - /* Writes of zero length not supported in auto mode. */ - debug("%s: zero length writes not supported\n", __func__); - return I2C_NOK; - } - - rv = hsi2c_prepare_transaction - (i2c, chip, len + alen, false, issue_stop); - if (rv != I2C_OK) - return rv; - - /* Move address, if any, and the data, if any, into the FIFO. */ - for (i = 0; i < alen; i++) { - rv = hsi2c_poll_fifo(i2c, false); - if (rv != I2C_OK) { - debug("%s: address write failed\n", __func__); - goto write_error; - } - writel(addr[i], &i2c->usi_txdata); - } - - for (i = 0; i < len; i++) { - rv = hsi2c_poll_fifo(i2c, false); - if (rv != I2C_OK) { - debug("%s: data write failed\n", __func__); - goto write_error; - } - writel(data[i], &i2c->usi_txdata); - } - - rv = hsi2c_wait_for_trx(i2c); - - write_error: - if (issue_stop) { - int tmp_ret = hsi2c_wait_while_busy(i2c); - if (rv == I2C_OK) - rv = tmp_ret; - } - - writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ - return rv; -} - -static int hsi2c_read(struct exynos5_hsi2c *i2c, - unsigned char chip, - unsigned char addr[], - unsigned char alen, - unsigned char data[], - unsigned short len) -{ - int i, rv, tmp_ret; - bool drop_data = false; - - if (!len) { - /* Reads of zero length not supported in auto mode. */ - debug("%s: zero length read adjusted\n", __func__); - drop_data = true; - len = 1; - } - - if (alen) { - /* Internal register adress needs to be written first. */ - rv = hsi2c_write(i2c, chip, addr, alen, NULL, 0, false); - if (rv != I2C_OK) - return rv; - } - - rv = hsi2c_prepare_transaction(i2c, chip, len, true, true); - - if (rv != I2C_OK) - return rv; - - for (i = 0; i < len; i++) { - rv = hsi2c_poll_fifo(i2c, true); - if (rv != I2C_OK) - goto read_err; - if (drop_data) - continue; - data[i] = readl(&i2c->usi_rxdata); - } - - rv = hsi2c_wait_for_trx(i2c); - - read_err: - tmp_ret = hsi2c_wait_while_busy(i2c); - if (rv == I2C_OK) - rv = tmp_ret; - - writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ - return rv; -} - -#ifdef CONFIG_SYS_I2C -static unsigned int s3c24x0_i2c_set_bus_speed(struct i2c_adapter *adap, - unsigned int speed) -#else static int s3c24x0_i2c_set_bus_speed(struct udevice *dev, unsigned int speed) -#endif { - struct s3c24x0_i2c_bus *i2c_bus; + struct s3c24x0_i2c_bus *i2c_bus = dev_get_priv(dev); -#ifdef CONFIG_SYS_I2C - i2c_bus = get_bus(adap->hwadapnr); - if (!i2c_bus) - return -EFAULT; -#else - i2c_bus = dev_get_priv(dev); -#endif i2c_bus->clock_frequency = speed; - if (i2c_bus->is_highspeed) { - if (hsi2c_get_clk_details(i2c_bus)) - return -EFAULT; - hsi2c_ch_init(i2c_bus); - } else { - i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, - CONFIG_SYS_I2C_S3C24X0_SLAVE); - } + i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, + CONFIG_SYS_I2C_S3C24X0_SLAVE); return 0; } @@ -857,23 +204,12 @@ bailout: return result; } -#ifdef CONFIG_SYS_I2C -static int s3c24x0_i2c_probe(struct i2c_adapter *adap, uchar chip) -#else static int s3c24x0_i2c_probe(struct udevice *dev, uint chip, uint chip_flags) -#endif { - struct s3c24x0_i2c_bus *i2c_bus; + struct s3c24x0_i2c_bus *i2c_bus = dev_get_priv(dev); uchar buf[1]; int ret; -#ifdef CONFIG_SYS_I2C - i2c_bus = get_bus(adap->hwadapnr); - if (!i2c_bus) - return -EFAULT; -#else - i2c_bus = dev_get_priv(dev); -#endif buf[0] = 0; /* @@ -881,433 +217,11 @@ static int s3c24x0_i2c_probe(struct udevice *dev, uint chip, uint chip_flags) * address was <ACK>ed (i.e. there was a chip at that address which * drove the data line low). */ - if (i2c_bus->is_highspeed) { - ret = hsi2c_read(i2c_bus->hsregs, - chip, 0, 0, buf, 1); - } else { - ret = i2c_transfer(i2c_bus->regs, - I2C_READ, chip << 1, 0, 0, buf, 1); - } + ret = i2c_transfer(i2c_bus->regs, I2C_READ, chip << 1, 0, 0, buf, 1); return ret != I2C_OK; } -#ifdef CONFIG_SYS_I2C -static int s3c24x0_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, - int alen, uchar *buffer, int len) -{ - struct s3c24x0_i2c_bus *i2c_bus; - uchar xaddr[4]; - int ret; - - i2c_bus = get_bus(adap->hwadapnr); - if (!i2c_bus) - return -EFAULT; - - if (alen > 4) { - debug("I2C read: addr len %d not supported\n", alen); - return -EADDRNOTAVAIL; - } - - if (alen > 0) { - xaddr[0] = (addr >> 24) & 0xFF; - xaddr[1] = (addr >> 16) & 0xFF; - xaddr[2] = (addr >> 8) & 0xFF; - xaddr[3] = addr & 0xFF; - } - -#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW - /* - * EEPROM chips that implement "address overflow" are ones - * like Catalyst 24WC04/08/16 which has 9/10/11 bits of - * address and the extra bits end up in the "chip address" - * bit slots. This makes a 24WC08 (1Kbyte) chip look like - * four 256 byte chips. - * - * Note that we consider the length of the address field to - * still be one byte because the extra address bits are - * hidden in the chip address. - */ - if (alen > 0) - chip |= ((addr >> (alen * 8)) & - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); -#endif - if (i2c_bus->is_highspeed) - ret = hsi2c_read(i2c_bus->hsregs, chip, &xaddr[4 - alen], - alen, buffer, len); - else - ret = i2c_transfer(i2c_bus->regs, I2C_READ, chip << 1, - &xaddr[4 - alen], alen, buffer, len); - - if (ret) { - if (i2c_bus->is_highspeed) - exynos5_i2c_reset(i2c_bus); - debug("I2c read failed %d\n", ret); - return -EIO; - } - return 0; -} - -static int s3c24x0_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, - int alen, uchar *buffer, int len) -{ - struct s3c24x0_i2c_bus *i2c_bus; - uchar xaddr[4]; - int ret; - - i2c_bus = get_bus(adap->hwadapnr); - if (!i2c_bus) - return -EFAULT; - - if (alen > 4) { - debug("I2C write: addr len %d not supported\n", alen); - return -EINVAL; - } - - if (alen > 0) { - xaddr[0] = (addr >> 24) & 0xFF; - xaddr[1] = (addr >> 16) & 0xFF; - xaddr[2] = (addr >> 8) & 0xFF; - xaddr[3] = addr & 0xFF; - } -#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW - /* - * EEPROM chips that implement "address overflow" are ones - * like Catalyst 24WC04/08/16 which has 9/10/11 bits of - * address and the extra bits end up in the "chip address" - * bit slots. This makes a 24WC08 (1Kbyte) chip look like - * four 256 byte chips. - * - * Note that we consider the length of the address field to - * still be one byte because the extra address bits are - * hidden in the chip address. - */ - if (alen > 0) - chip |= ((addr >> (alen * 8)) & - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); -#endif - if (i2c_bus->is_highspeed) - ret = hsi2c_write(i2c_bus->hsregs, chip, &xaddr[4 - alen], - alen, buffer, len, true); - else - ret = i2c_transfer(i2c_bus->regs, I2C_WRITE, chip << 1, - &xaddr[4 - alen], alen, buffer, len); - - if (ret != 0) { - if (i2c_bus->is_highspeed) - exynos5_i2c_reset(i2c_bus); - return 1; - } else { - return 0; - } -} - -#if CONFIG_IS_ENABLED(OF_CONTROL) -static void process_nodes(const void *blob, int node_list[], int count, - int is_highspeed) -{ - struct s3c24x0_i2c_bus *bus; - int i, flags; - - for (i = 0; i < count; i++) { - int node = node_list[i]; - - if (node <= 0) - continue; - - bus = &i2c_bus[i]; - bus->active = true; - bus->is_highspeed = is_highspeed; - - if (is_highspeed) { - flags = PINMUX_FLAG_HS_MODE; - bus->hsregs = (struct exynos5_hsi2c *) - fdtdec_get_addr(blob, node, "reg"); - } else { - flags = 0; - bus->regs = (struct s3c24x0_i2c *) - fdtdec_get_addr(blob, node, "reg"); - } - - bus->id = pinmux_decode_periph_id(blob, node); - bus->clock_frequency = fdtdec_get_int(blob, node, - "clock-frequency", - CONFIG_SYS_I2C_S3C24X0_SPEED); - bus->node = node; - bus->bus_num = i; - exynos_pinmux_config(bus->id, flags); - - /* Mark position as used */ - node_list[i] = -1; - } -} - -void board_i2c_init(const void *blob) -{ - int node_list[CONFIG_MAX_I2C_NUM]; - int count; - - /* First get the normal i2c ports */ - count = fdtdec_find_aliases_for_id(blob, "i2c", - COMPAT_SAMSUNG_S3C2440_I2C, node_list, - CONFIG_MAX_I2C_NUM); - process_nodes(blob, node_list, count, 0); - - /* Now look for high speed i2c ports */ - count = fdtdec_find_aliases_for_id(blob, "i2c", - COMPAT_SAMSUNG_EXYNOS5_I2C, node_list, - CONFIG_MAX_I2C_NUM); - process_nodes(blob, node_list, count, 1); -} - -int i2c_get_bus_num_fdt(int node) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(i2c_bus); i++) { - if (node == i2c_bus[i].node) - return i; - } - - debug("%s: Can't find any matched I2C bus\n", __func__); - return -EINVAL; -} - -int i2c_reset_port_fdt(const void *blob, int node) -{ - struct s3c24x0_i2c_bus *i2c_bus; - int bus; - - bus = i2c_get_bus_num_fdt(node); - if (bus < 0) { - debug("could not get bus for node %d\n", node); - return bus; - } - - i2c_bus = get_bus(bus); - if (!i2c_bus) { - debug("get_bus() failed for node %d\n", node); - return -EFAULT; - } - - if (i2c_bus->is_highspeed) { - if (hsi2c_get_clk_details(i2c_bus)) - return -EINVAL; - hsi2c_ch_init(i2c_bus); - } else { - i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, - CONFIG_SYS_I2C_S3C24X0_SLAVE); - } - - return 0; -} -#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ - -#ifdef CONFIG_EXYNOS5 -static void exynos_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr) -{ - /* This will override the speed selected in the fdt for that port */ - debug("i2c_init(speed=%u, slaveaddr=0x%x)\n", speed, slaveaddr); - if (i2c_set_bus_speed(speed)) - error("i2c_init: failed to init bus for speed = %d", speed); -} -#endif /* CONFIG_EXYNOS5 */ - -/* - * Register s3c24x0 i2c adapters - */ -#if defined(CONFIG_EXYNOS5420) -U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) -U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) -U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) -U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) -U_BOOT_I2C_ADAP_COMPLETE(i2c04, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) -U_BOOT_I2C_ADAP_COMPLETE(i2c05, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) -U_BOOT_I2C_ADAP_COMPLETE(i2c06, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) -U_BOOT_I2C_ADAP_COMPLETE(i2c07, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) -U_BOOT_I2C_ADAP_COMPLETE(i2c08, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) -U_BOOT_I2C_ADAP_COMPLETE(i2c09, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 9) -U_BOOT_I2C_ADAP_COMPLETE(i2c10, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 10) -#elif defined(CONFIG_EXYNOS5250) -U_BOOT_I2C_ADAP_COMPLETE(i2c00, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) -U_BOOT_I2C_ADAP_COMPLETE(i2c01, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) -U_BOOT_I2C_ADAP_COMPLETE(i2c02, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) -U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) -U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) -U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) -U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) -U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) -U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) -U_BOOT_I2C_ADAP_COMPLETE(i2c09, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 9) -U_BOOT_I2C_ADAP_COMPLETE(s3c10, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 10) -#elif defined(CONFIG_EXYNOS4) -U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) -U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) -U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) -U_BOOT_I2C_ADAP_COMPLETE(i2c03, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) -U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) -U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) -U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) -U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) -U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) -#else -U_BOOT_I2C_ADAP_COMPLETE(s3c0, s3c24x0_i2c_init, s3c24x0_i2c_probe, - s3c24x0_i2c_read, s3c24x0_i2c_write, - s3c24x0_i2c_set_bus_speed, - CONFIG_SYS_I2C_S3C24X0_SPEED, - CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) -#endif -#endif /* CONFIG_SYS_I2C */ - -#ifdef CONFIG_DM_I2C -static int exynos_hs_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, - int nmsgs) -{ - struct s3c24x0_i2c_bus *i2c_bus = dev_get_priv(dev); - struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; - int ret; - - for (; nmsgs > 0; nmsgs--, msg++) { - if (msg->flags & I2C_M_RD) { - ret = hsi2c_read(hsregs, msg->addr, 0, 0, msg->buf, - msg->len); - } else { - ret = hsi2c_write(hsregs, msg->addr, 0, 0, msg->buf, - msg->len, true); - } - if (ret) { - exynos5_i2c_reset(i2c_bus); - return -EREMOTEIO; - } - } - - return 0; -} - static int s3c24x0_do_msg(struct s3c24x0_i2c_bus *i2c_bus, struct i2c_msg *msg, int seq) { @@ -1390,18 +304,11 @@ static int s3c_i2c_ofdata_to_platdata(struct udevice *dev) { const void *blob = gd->fdt_blob; struct s3c24x0_i2c_bus *i2c_bus = dev_get_priv(dev); - int node, flags; + int node; - i2c_bus->is_highspeed = dev_get_driver_data(dev); node = dev->of_offset; - if (i2c_bus->is_highspeed) { - flags = PINMUX_FLAG_HS_MODE; - i2c_bus->hsregs = (struct exynos5_hsi2c *)dev_get_addr(dev); - } else { - flags = 0; - i2c_bus->regs = (struct s3c24x0_i2c *)dev_get_addr(dev); - } + i2c_bus->regs = (struct s3c24x0_i2c *)dev_get_addr(dev); i2c_bus->id = pinmux_decode_periph_id(blob, node); @@ -1410,7 +317,7 @@ static int s3c_i2c_ofdata_to_platdata(struct udevice *dev) i2c_bus->node = node; i2c_bus->bus_num = dev->seq; - exynos_pinmux_config(i2c_bus->id, flags); + exynos_pinmux_config(i2c_bus->id, 0); i2c_bus->active = true; @@ -1424,7 +331,7 @@ static const struct dm_i2c_ops s3c_i2c_ops = { }; static const struct udevice_id s3c_i2c_ids[] = { - { .compatible = "samsung,s3c2440-i2c", .data = EXYNOS_I2C_STD }, + { .compatible = "samsung,s3c2440-i2c" }, { } }; @@ -1436,28 +343,3 @@ U_BOOT_DRIVER(i2c_s3c) = { .priv_auto_alloc_size = sizeof(struct s3c24x0_i2c_bus), .ops = &s3c_i2c_ops, }; - -/* - * TODO(sjg@chromium.org): Move this to a separate file when everything uses - * driver model - */ -static const struct dm_i2c_ops exynos_hs_i2c_ops = { - .xfer = exynos_hs_i2c_xfer, - .probe_chip = s3c24x0_i2c_probe, - .set_bus_speed = s3c24x0_i2c_set_bus_speed, -}; - -static const struct udevice_id exynos_hs_i2c_ids[] = { - { .compatible = "samsung,exynos5-hsi2c", .data = EXYNOS_I2C_HS }, - { } -}; - -U_BOOT_DRIVER(hs_i2c) = { - .name = "i2c_s3c_hs", - .id = UCLASS_I2C, - .of_match = exynos_hs_i2c_ids, - .ofdata_to_platdata = s3c_i2c_ofdata_to_platdata, - .priv_auto_alloc_size = sizeof(struct s3c24x0_i2c_bus), - .ops = &exynos_hs_i2c_ops, -}; -#endif /* CONFIG_DM_I2C */ |