From b6ae6765c5a9e5daa3799e4d65562d3184712506 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 9 Jun 2014 11:36:55 +0200 Subject: sunxi: Remove mmc DMA support The DMA code in sunxi_mmc.c is broken. mmc_trans_data_by_dma() allocates the dma descriptors on the stack, and then exits while the dma transfer is in progress, so the dma engine is reading stack memory which at that point may be re-used. So far we've gotten away with this by luck, but recent u-boot changes have shifted the stack start address by 16 bytes, which combined with dma alignment now exposes this problem. Since we end up just busy waiting for the dma engine anyway, this commit fixes things by simply removing the dma code, resulting in smaller bug-free code. Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- drivers/mmc/sunxi_mmc.c | 141 +++--------------------------------------------- 1 file changed, 7 insertions(+), 134 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index eb7b115..d4e574f 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -16,28 +16,6 @@ #include #include -struct sunxi_mmc_des { - u32 reserved1_1:1; - u32 dic:1; /* disable interrupt on completion */ - u32 last_des:1; /* 1-this data buffer is the last buffer */ - u32 first_des:1; /* 1-data buffer is the first buffer, - 0-data buffer contained in the next - descriptor is 1st buffer */ - u32 des_chain:1; /* 1-the 2nd address in the descriptor is the - next descriptor address */ - u32 end_of_ring:1; /* 1-last descriptor flag when using dual - data buffer in descriptor */ - u32 reserved1_2:24; - u32 card_err_sum:1; /* transfer error flag */ - u32 own:1; /* des owner:1-idma owns it, 0-host owns it */ -#define SDXC_DES_NUM_SHIFT 16 -#define SDXC_DES_BUFFER_MAX_LEN (1 << SDXC_DES_NUM_SHIFT) - u32 data_buf1_sz:16; - u32 data_buf2_sz:16; - u32 buf_addr_ptr1; - u32 buf_addr_ptr2; -}; - struct sunxi_mmc_host { unsigned mmc_no; uint32_t *mclkreg; @@ -189,6 +167,7 @@ static int mmc_core_init(struct mmc *mmc) /* Reset controller */ writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl); + udelay(1000); return 0; } @@ -204,6 +183,9 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data) unsigned timeout_msecs = 2000; unsigned *buff = (unsigned int *)(reading ? data->dest : data->src); + /* Always read / write data through the CPU */ + setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB); + for (i = 0; i < (byte_cnt >> 2); i++) { while (readl(&mmchost->reg->status) & status_bit) { if (!timeout_msecs--) @@ -220,85 +202,6 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data) return 0; } -static int mmc_trans_data_by_dma(struct mmc *mmc, struct mmc_data *data) -{ - struct sunxi_mmc_host *mmchost = mmc->priv; - unsigned byte_cnt = data->blocksize * data->blocks; - unsigned char *buff; - unsigned des_idx = 0; - unsigned buff_frag_num = - (byte_cnt + SDXC_DES_BUFFER_MAX_LEN - 1) >> SDXC_DES_NUM_SHIFT; - unsigned remain; - unsigned i, rval; - ALLOC_CACHE_ALIGN_BUFFER(struct sunxi_mmc_des, pdes, buff_frag_num); - - buff = data->flags & MMC_DATA_READ ? - (unsigned char *)data->dest : (unsigned char *)data->src; - remain = byte_cnt & (SDXC_DES_BUFFER_MAX_LEN - 1); - - flush_cache((unsigned long)buff, (unsigned long)byte_cnt); - for (i = 0; i < buff_frag_num; i++, des_idx++) { - memset((void *)&pdes[des_idx], 0, sizeof(struct sunxi_mmc_des)); - pdes[des_idx].des_chain = 1; - pdes[des_idx].own = 1; - pdes[des_idx].dic = 1; - if (buff_frag_num > 1 && i != buff_frag_num - 1) - pdes[des_idx].data_buf1_sz = 0; /* 0 == max_len */ - else - pdes[des_idx].data_buf1_sz = remain; - - pdes[des_idx].buf_addr_ptr1 = - (u32) buff + i * SDXC_DES_BUFFER_MAX_LEN; - if (i == 0) - pdes[des_idx].first_des = 1; - - if (i == buff_frag_num - 1) { - pdes[des_idx].dic = 0; - pdes[des_idx].last_des = 1; - pdes[des_idx].end_of_ring = 1; - pdes[des_idx].buf_addr_ptr2 = 0; - } else { - pdes[des_idx].buf_addr_ptr2 = (u32)&pdes[des_idx + 1]; - } - } - flush_cache((unsigned long)pdes, - sizeof(struct sunxi_mmc_des) * (des_idx + 1)); - - rval = readl(&mmchost->reg->gctrl); - /* Enable DMA */ - writel(rval | SUNXI_MMC_GCTRL_DMA_RESET | SUNXI_MMC_GCTRL_DMA_ENABLE, - &mmchost->reg->gctrl); - /* Reset iDMA */ - writel(SUNXI_MMC_IDMAC_RESET, &mmchost->reg->dmac); - /* Enable iDMA */ - writel(SUNXI_MMC_IDMAC_FIXBURST | SUNXI_MMC_IDMAC_ENABLE, - &mmchost->reg->dmac); - rval = readl(&mmchost->reg->idie) & - ~(SUNXI_MMC_IDIE_TXIRQ|SUNXI_MMC_IDIE_RXIRQ); - if (data->flags & MMC_DATA_WRITE) - rval |= SUNXI_MMC_IDIE_TXIRQ; - else - rval |= SUNXI_MMC_IDIE_RXIRQ; - writel(rval, &mmchost->reg->idie); - writel((u32) pdes, &mmchost->reg->dlba); - writel((0x2 << 28) | (0x7 << 16) | (0x01 << 3), - &mmchost->reg->ftrglevel); - - return 0; -} - -static void mmc_enable_dma_accesses(struct mmc *mmc, int dma) -{ - struct sunxi_mmc_host *mmchost = mmc->priv; - - unsigned int gctrl = readl(&mmchost->reg->gctrl); - if (dma) - gctrl &= ~SUNXI_MMC_GCTRL_ACCESS_BY_AHB; - else - gctrl |= SUNXI_MMC_GCTRL_ACCESS_BY_AHB; - writel(gctrl, &mmchost->reg->gctrl); -} - static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs, unsigned int done_bit, const char *what) { @@ -327,7 +230,6 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, unsigned int timeout_msecs; int error = 0; unsigned int status = 0; - unsigned int usedma = 0; unsigned int bytecnt = 0; if (mmchost->fatal_err) @@ -378,20 +280,8 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, bytecnt = data->blocksize * data->blocks; debug("trans data %d bytes\n", bytecnt); -#if defined(CONFIG_MMC_SUNXI_USE_DMA) && !defined(CONFIG_SPL_BUILD) - if (bytecnt > 64) { -#else - if (0) { -#endif - usedma = 1; - mmc_enable_dma_accesses(mmc, 1); - ret = mmc_trans_data_by_dma(mmc, data); - writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd); - } else { - mmc_enable_dma_accesses(mmc, 0); - writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd); - ret = mmc_trans_data_by_cpu(mmc, data); - } + writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd); + ret = mmc_trans_data_by_cpu(mmc, data); if (ret) { error = readl(&mmchost->reg->rint) & \ SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT; @@ -405,7 +295,7 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, goto out; if (data) { - timeout_msecs = usedma ? 120 * bytecnt : 120; + timeout_msecs = 120; debug("cacl timeout %x msec\n", timeout_msecs); error = mmc_rint_wait(mmc, timeout_msecs, data->blocks > 1 ? @@ -442,23 +332,6 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, debug("mmc resp 0x%08x\n", cmd->response[0]); } out: - if (data && usedma) { - /* IDMASTAREG - * IDST[0] : idma tx int - * IDST[1] : idma rx int - * IDST[2] : idma fatal bus error - * IDST[4] : idma descriptor invalid - * IDST[5] : idma error summary - * IDST[8] : idma normal interrupt sumary - * IDST[9] : idma abnormal interrupt sumary - */ - status = readl(&mmchost->reg->idst); - writel(status, &mmchost->reg->idst); - writel(0, &mmchost->reg->idie); - writel(0, &mmchost->reg->dmac); - writel(readl(&mmchost->reg->gctrl) & ~SUNXI_MMC_GCTRL_DMA_ENABLE, - &mmchost->reg->gctrl); - } if (error < 0) { writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl); mmc_update_clk(mmc); -- cgit v1.1 From b70ed300b0dcf23e46265904ddc4fbf9a72b99b8 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 9 Jun 2014 11:36:59 +0200 Subject: net: Rename and cleanup sunxi (Allwinner) emac driver There have been 3 versions of the sunxi_emac support patch during its development. Somehow version 2 ended up in upstream u-boot where as the u-boot-sunxi git repo got version 3. This bumps the version in upstream u-boot to version 3 of the patch: - Initialize MII clock earlier so mii access to allow independent use - Name change from WEMAC to EMAC to match mainline kernel & chip manual - Cosmetic code cleanup Signed-off-by: Stefan Roese Signed-off-by: Henrik Nordstrom Signed-off-by: Oliver Schinagl Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- drivers/net/Makefile | 2 +- drivers/net/sunxi_emac.c | 521 +++++++++++++++++++++++++++++++++++++++++++++ drivers/net/sunxi_wemac.c | 525 ---------------------------------------------- 3 files changed, 522 insertions(+), 526 deletions(-) create mode 100644 drivers/net/sunxi_emac.c delete mode 100644 drivers/net/sunxi_wemac.c (limited to 'drivers') diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 6226cb2..7cc6b6f 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_E1000) += e1000.o obj-$(CONFIG_E1000_SPI) += e1000_spi.o obj-$(CONFIG_EEPRO100) += eepro100.o +obj-$(CONFIG_SUNXI_EMAC) += sunxi_emac.o obj-$(CONFIG_ENC28J60) += enc28j60.o obj-$(CONFIG_EP93XX) += ep93xx_eth.o obj-$(CONFIG_ETHOC) += ethoc.o @@ -51,7 +52,6 @@ obj-$(CONFIG_RTL8169) += rtl8169.o obj-$(CONFIG_SH_ETHER) += sh_eth.o obj-$(CONFIG_SMC91111) += smc91111.o obj-$(CONFIG_SMC911X) += smc911x.o -obj-$(CONFIG_SUNXI_WEMAC) += sunxi_wemac.o obj-$(CONFIG_DRIVER_TI_EMAC) += davinci_emac.o obj-$(CONFIG_TSEC_ENET) += tsec.o fsl_mdio.o obj-$(CONFIG_DRIVER_TI_CPSW) += cpsw.o diff --git a/drivers/net/sunxi_emac.c b/drivers/net/sunxi_emac.c new file mode 100644 index 0000000..5a06d68 --- /dev/null +++ b/drivers/net/sunxi_emac.c @@ -0,0 +1,521 @@ +/* + * sunxi_emac.c -- Allwinner A10 ethernet driver + * + * (C) Copyright 2012, Stefan Roese + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* EMAC register */ +struct emac_regs { + u32 ctl; /* 0x00 */ + u32 tx_mode; /* 0x04 */ + u32 tx_flow; /* 0x08 */ + u32 tx_ctl0; /* 0x0c */ + u32 tx_ctl1; /* 0x10 */ + u32 tx_ins; /* 0x14 */ + u32 tx_pl0; /* 0x18 */ + u32 tx_pl1; /* 0x1c */ + u32 tx_sta; /* 0x20 */ + u32 tx_io_data; /* 0x24 */ + u32 tx_io_data1;/* 0x28 */ + u32 tx_tsvl0; /* 0x2c */ + u32 tx_tsvh0; /* 0x30 */ + u32 tx_tsvl1; /* 0x34 */ + u32 tx_tsvh1; /* 0x38 */ + u32 rx_ctl; /* 0x3c */ + u32 rx_hash0; /* 0x40 */ + u32 rx_hash1; /* 0x44 */ + u32 rx_sta; /* 0x48 */ + u32 rx_io_data; /* 0x4c */ + u32 rx_fbc; /* 0x50 */ + u32 int_ctl; /* 0x54 */ + u32 int_sta; /* 0x58 */ + u32 mac_ctl0; /* 0x5c */ + u32 mac_ctl1; /* 0x60 */ + u32 mac_ipgt; /* 0x64 */ + u32 mac_ipgr; /* 0x68 */ + u32 mac_clrt; /* 0x6c */ + u32 mac_maxf; /* 0x70 */ + u32 mac_supp; /* 0x74 */ + u32 mac_test; /* 0x78 */ + u32 mac_mcfg; /* 0x7c */ + u32 mac_mcmd; /* 0x80 */ + u32 mac_madr; /* 0x84 */ + u32 mac_mwtd; /* 0x88 */ + u32 mac_mrdd; /* 0x8c */ + u32 mac_mind; /* 0x90 */ + u32 mac_ssrr; /* 0x94 */ + u32 mac_a0; /* 0x98 */ + u32 mac_a1; /* 0x9c */ +}; + +/* SRAMC register */ +struct sunxi_sramc_regs { + u32 ctrl0; + u32 ctrl1; +}; + +/* 0: Disable 1: Aborted frame enable(default) */ +#define EMAC_TX_AB_M (0x1 << 0) +/* 0: CPU 1: DMA(default) */ +#define EMAC_TX_TM (0x1 << 1) + +#define EMAC_TX_SETUP (0) + +/* 0: DRQ asserted 1: DRQ automatically(default) */ +#define EMAC_RX_DRQ_MODE (0x1 << 1) +/* 0: CPU 1: DMA(default) */ +#define EMAC_RX_TM (0x1 << 2) +/* 0: Normal(default) 1: Pass all Frames */ +#define EMAC_RX_PA (0x1 << 4) +/* 0: Normal(default) 1: Pass Control Frames */ +#define EMAC_RX_PCF (0x1 << 5) +/* 0: Normal(default) 1: Pass Frames with CRC Error */ +#define EMAC_RX_PCRCE (0x1 << 6) +/* 0: Normal(default) 1: Pass Frames with Length Error */ +#define EMAC_RX_PLE (0x1 << 7) +/* 0: Normal 1: Pass Frames length out of range(default) */ +#define EMAC_RX_POR (0x1 << 8) +/* 0: Not accept 1: Accept unicast Packets(default) */ +#define EMAC_RX_UCAD (0x1 << 16) +/* 0: Normal(default) 1: DA Filtering */ +#define EMAC_RX_DAF (0x1 << 17) +/* 0: Not accept 1: Accept multicast Packets(default) */ +#define EMAC_RX_MCO (0x1 << 20) +/* 0: Disable(default) 1: Enable Hash filter */ +#define EMAC_RX_MHF (0x1 << 21) +/* 0: Not accept 1: Accept Broadcast Packets(default) */ +#define EMAC_RX_BCO (0x1 << 22) +/* 0: Disable(default) 1: Enable SA Filtering */ +#define EMAC_RX_SAF (0x1 << 24) +/* 0: Normal(default) 1: Inverse Filtering */ +#define EMAC_RX_SAIF (0x1 << 25) + +#define EMAC_RX_SETUP (EMAC_RX_POR | EMAC_RX_UCAD | EMAC_RX_DAF | \ + EMAC_RX_MCO | EMAC_RX_BCO) + +/* 0: Disable 1: Enable Receive Flow Control(default) */ +#define EMAC_MAC_CTL0_RFC (0x1 << 2) +/* 0: Disable 1: Enable Transmit Flow Control(default) */ +#define EMAC_MAC_CTL0_TFC (0x1 << 3) + +#define EMAC_MAC_CTL0_SETUP (EMAC_MAC_CTL0_RFC | EMAC_MAC_CTL0_TFC) + +/* 0: Disable 1: Enable MAC Frame Length Checking(default) */ +#define EMAC_MAC_CTL1_FLC (0x1 << 1) +/* 0: Disable(default) 1: Enable Huge Frame */ +#define EMAC_MAC_CTL1_HF (0x1 << 2) +/* 0: Disable(default) 1: Enable MAC Delayed CRC */ +#define EMAC_MAC_CTL1_DCRC (0x1 << 3) +/* 0: Disable 1: Enable MAC CRC(default) */ +#define EMAC_MAC_CTL1_CRC (0x1 << 4) +/* 0: Disable 1: Enable MAC PAD Short frames(default) */ +#define EMAC_MAC_CTL1_PC (0x1 << 5) +/* 0: Disable(default) 1: Enable MAC PAD Short frames and append CRC */ +#define EMAC_MAC_CTL1_VC (0x1 << 6) +/* 0: Disable(default) 1: Enable MAC auto detect Short frames */ +#define EMAC_MAC_CTL1_ADP (0x1 << 7) +/* 0: Disable(default) 1: Enable */ +#define EMAC_MAC_CTL1_PRE (0x1 << 8) +/* 0: Disable(default) 1: Enable */ +#define EMAC_MAC_CTL1_LPE (0x1 << 9) +/* 0: Disable(default) 1: Enable no back off */ +#define EMAC_MAC_CTL1_NB (0x1 << 12) +/* 0: Disable(default) 1: Enable */ +#define EMAC_MAC_CTL1_BNB (0x1 << 13) +/* 0: Disable(default) 1: Enable */ +#define EMAC_MAC_CTL1_ED (0x1 << 14) + +#define EMAC_MAC_CTL1_SETUP (EMAC_MAC_CTL1_FLC | EMAC_MAC_CTL1_CRC | \ + EMAC_MAC_CTL1_PC) + +#define EMAC_MAC_IPGT 0x15 + +#define EMAC_MAC_NBTB_IPG1 0xc +#define EMAC_MAC_NBTB_IPG2 0x12 + +#define EMAC_MAC_CW 0x37 +#define EMAC_MAC_RM 0xf + +#define EMAC_MAC_MFL 0x0600 + +/* Receive status */ +#define EMAC_CRCERR (0x1 << 4) +#define EMAC_LENERR (0x3 << 5) + +#define DMA_CPU_TRRESHOLD 2000 + +struct emac_eth_dev { + u32 speed; + u32 duplex; + u32 phy_configured; + int link_printed; +}; + +struct emac_rxhdr { + s16 rx_len; + u16 rx_status; +}; + +static void emac_inblk_32bit(void *reg, void *data, int count) +{ + int cnt = (count + 3) >> 2; + + if (cnt) { + u32 *buf = data; + + do { + u32 x = readl(reg); + *buf++ = x; + } while (--cnt); + } +} + +static void emac_outblk_32bit(void *reg, void *data, int count) +{ + int cnt = (count + 3) >> 2; + + if (cnt) { + const u32 *buf = data; + + do { + writel(*buf++, reg); + } while (--cnt); + } +} + +/* Read a word from phyxcer */ +static int emac_phy_read(const char *devname, unsigned char addr, + unsigned char reg, unsigned short *value) +{ + struct eth_device *dev = eth_get_dev_by_name(devname); + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + + /* issue the phy address and reg */ + writel(addr << 8 | reg, ®s->mac_madr); + + /* pull up the phy io line */ + writel(0x1, ®s->mac_mcmd); + + /* Wait read complete */ + mdelay(1); + + /* push down the phy io line */ + writel(0x0, ®s->mac_mcmd); + + /* and write data */ + *value = readl(®s->mac_mrdd); + + return 0; +} + +/* Write a word to phyxcer */ +static int emac_phy_write(const char *devname, unsigned char addr, + unsigned char reg, unsigned short value) +{ + struct eth_device *dev = eth_get_dev_by_name(devname); + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + + /* issue the phy address and reg */ + writel(addr << 8 | reg, ®s->mac_madr); + + /* pull up the phy io line */ + writel(0x1, ®s->mac_mcmd); + + /* Wait write complete */ + mdelay(1); + + /* push down the phy io line */ + writel(0x0, ®s->mac_mcmd); + + /* and write data */ + writel(value, ®s->mac_mwtd); + + return 0; +} + +static void emac_setup(struct eth_device *dev) +{ + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + u32 reg_val; + u16 phy_val; + u32 duplex_flag; + + /* Set up TX */ + writel(EMAC_TX_SETUP, ®s->tx_mode); + + /* Set up RX */ + writel(EMAC_RX_SETUP, ®s->rx_ctl); + + /* Set MAC */ + /* Set MAC CTL0 */ + writel(EMAC_MAC_CTL0_SETUP, ®s->mac_ctl0); + + /* Set MAC CTL1 */ + emac_phy_read(dev->name, 1, 0, &phy_val); + debug("PHY SETUP, reg 0 value: %x\n", phy_val); + duplex_flag = !!(phy_val & (1 << 8)); + + reg_val = 0; + if (duplex_flag) + reg_val = (0x1 << 0); + writel(EMAC_MAC_CTL1_SETUP | reg_val, ®s->mac_ctl1); + + /* Set up IPGT */ + writel(EMAC_MAC_IPGT, ®s->mac_ipgt); + + /* Set up IPGR */ + writel(EMAC_MAC_NBTB_IPG2 | (EMAC_MAC_NBTB_IPG1 << 8), ®s->mac_ipgr); + + /* Set up Collison window */ + writel(EMAC_MAC_RM | (EMAC_MAC_CW << 8), ®s->mac_clrt); + + /* Set up Max Frame Length */ + writel(EMAC_MAC_MFL, ®s->mac_maxf); +} + +static void emac_reset(struct eth_device *dev) +{ + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + + debug("resetting device\n"); + + /* RESET device */ + writel(0, ®s->ctl); + udelay(200); + + writel(1, ®s->ctl); + udelay(200); +} + +static int sunxi_emac_eth_init(struct eth_device *dev, bd_t *bd) +{ + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + struct emac_eth_dev *priv = dev->priv; + u16 phy_reg; + + /* Init EMAC */ + + /* Flush RX FIFO */ + setbits_le32(®s->rx_ctl, 0x8); + udelay(1); + + /* Init MAC */ + + /* Soft reset MAC */ + clrbits_le32(®s->mac_ctl0, 0x1 << 15); + + /* Clear RX counter */ + writel(0x0, ®s->rx_fbc); + udelay(1); + + /* Set up EMAC */ + emac_setup(dev); + + writel(dev->enetaddr[0] << 16 | dev->enetaddr[1] << 8 | + dev->enetaddr[2], ®s->mac_a1); + writel(dev->enetaddr[3] << 16 | dev->enetaddr[4] << 8 | + dev->enetaddr[5], ®s->mac_a0); + + mdelay(1); + + emac_reset(dev); + + /* PHY POWER UP */ + emac_phy_read(dev->name, 1, 0, &phy_reg); + emac_phy_write(dev->name, 1, 0, phy_reg & (~(0x1 << 11))); + mdelay(1); + + emac_phy_read(dev->name, 1, 0, &phy_reg); + + priv->speed = miiphy_speed(dev->name, 0); + priv->duplex = miiphy_duplex(dev->name, 0); + + /* Print link status only once */ + if (!priv->link_printed) { + printf("ENET Speed is %d Mbps - %s duplex connection\n", + priv->speed, (priv->duplex == HALF) ? "HALF" : "FULL"); + priv->link_printed = 1; + } + + /* Set EMAC SPEED depend on PHY */ + clrsetbits_le32(®s->mac_supp, 1 << 8, + ((phy_reg & (0x1 << 13)) >> 13) << 8); + + /* Set duplex depend on phy */ + clrsetbits_le32(®s->mac_ctl1, 1 << 0, + ((phy_reg & (0x1 << 8)) >> 8) << 0); + + /* Enable RX/TX */ + setbits_le32(®s->ctl, 0x7); + + return 0; +} + +static void sunxi_emac_eth_halt(struct eth_device *dev) +{ + /* Nothing to do here */ +} + +static int sunxi_emac_eth_recv(struct eth_device *dev) +{ + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + struct emac_rxhdr rxhdr; + u32 rxcount; + u32 reg_val; + int rx_len; + int rx_status; + int good_packet; + + /* Check packet ready or not */ + + /* Race warning: The first packet might arrive with + * the interrupts disabled, but the second will fix + */ + rxcount = readl(®s->rx_fbc); + if (!rxcount) { + /* Had one stuck? */ + rxcount = readl(®s->rx_fbc); + if (!rxcount) + return 0; + } + + reg_val = readl(®s->rx_io_data); + if (reg_val != 0x0143414d) { + /* Disable RX */ + clrbits_le32(®s->ctl, 0x1 << 2); + + /* Flush RX FIFO */ + setbits_le32(®s->rx_ctl, 0x1 << 3); + while (readl(®s->rx_ctl) & (0x1 << 3)) + ; + + /* Enable RX */ + setbits_le32(®s->ctl, 0x1 << 2); + + return 0; + } + + /* A packet ready now + * Get status/length + */ + good_packet = 1; + + emac_inblk_32bit(®s->rx_io_data, &rxhdr, sizeof(rxhdr)); + + rx_len = rxhdr.rx_len; + rx_status = rxhdr.rx_status; + + /* Packet Status check */ + if (rx_len < 0x40) { + good_packet = 0; + debug("RX: Bad Packet (runt)\n"); + } + + /* rx_status is identical to RSR register. */ + if (0 & rx_status & (EMAC_CRCERR | EMAC_LENERR)) { + good_packet = 0; + if (rx_status & EMAC_CRCERR) + printf("crc error\n"); + if (rx_status & EMAC_LENERR) + printf("length error\n"); + } + + /* Move data from EMAC */ + if (good_packet) { + if (rx_len > DMA_CPU_TRRESHOLD) { + printf("Received packet is too big (len=%d)\n", rx_len); + } else { + emac_inblk_32bit((void *)®s->rx_io_data, + NetRxPackets[0], rx_len); + + /* Pass to upper layer */ + NetReceive(NetRxPackets[0], rx_len); + return rx_len; + } + } + + return 0; +} + +static int sunxi_emac_eth_send(struct eth_device *dev, void *packet, int len) +{ + struct emac_regs *regs = (struct emac_regs *)dev->iobase; + + /* Select channel 0 */ + writel(0, ®s->tx_ins); + + /* Write packet */ + emac_outblk_32bit((void *)®s->tx_io_data, packet, len); + + /* Set TX len */ + writel(len, ®s->tx_pl0); + + /* Start translate from fifo to phy */ + setbits_le32(®s->tx_ctl0, 1); + + return 0; +} + +int sunxi_emac_initialize(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_sramc_regs *sram = + (struct sunxi_sramc_regs *)SUNXI_SRAMC_BASE; + struct emac_regs *regs = + (struct emac_regs *)SUNXI_EMAC_BASE; + struct eth_device *dev; + struct emac_eth_dev *priv; + int pin; + + dev = malloc(sizeof(*dev)); + if (dev == NULL) + return -ENOMEM; + + priv = (struct emac_eth_dev *)malloc(sizeof(struct emac_eth_dev)); + if (!priv) { + free(dev); + return -ENOMEM; + } + + memset(dev, 0, sizeof(*dev)); + memset(priv, 0, sizeof(struct emac_eth_dev)); + + /* Map SRAM to EMAC */ + setbits_le32(&sram->ctrl1, 0x5 << 2); + + /* Configure pin mux settings for MII Ethernet */ + for (pin = SUNXI_GPA(0); pin <= SUNXI_GPA(17); pin++) + sunxi_gpio_set_cfgpin(pin, SUNXI_GPA0_EMAC); + + /* Set up clock gating */ + setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_EMAC); + + /* Set MII clock */ + clrsetbits_le32(®s->mac_mcfg, 0xf << 2, 0xd << 2); + + dev->iobase = (int)regs; + dev->priv = priv; + dev->init = sunxi_emac_eth_init; + dev->halt = sunxi_emac_eth_halt; + dev->send = sunxi_emac_eth_send; + dev->recv = sunxi_emac_eth_recv; + strcpy(dev->name, "emac"); + + eth_register(dev); + + miiphy_register(dev->name, emac_phy_read, emac_phy_write); + + return 0; +} diff --git a/drivers/net/sunxi_wemac.c b/drivers/net/sunxi_wemac.c deleted file mode 100644 index 699a381..0000000 --- a/drivers/net/sunxi_wemac.c +++ /dev/null @@ -1,525 +0,0 @@ -/* - * sunxi_wemac.c -- Allwinner A10 ethernet driver - * - * (C) Copyright 2012, Stefan Roese - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* EMAC register */ -struct wemac_regs { - u32 ctl; /* 0x00 */ - u32 tx_mode; /* 0x04 */ - u32 tx_flow; /* 0x08 */ - u32 tx_ctl0; /* 0x0c */ - u32 tx_ctl1; /* 0x10 */ - u32 tx_ins; /* 0x14 */ - u32 tx_pl0; /* 0x18 */ - u32 tx_pl1; /* 0x1c */ - u32 tx_sta; /* 0x20 */ - u32 tx_io_data; /* 0x24 */ - u32 tx_io_data1; /* 0x28 */ - u32 tx_tsvl0; /* 0x2c */ - u32 tx_tsvh0; /* 0x30 */ - u32 tx_tsvl1; /* 0x34 */ - u32 tx_tsvh1; /* 0x38 */ - u32 rx_ctl; /* 0x3c */ - u32 rx_hash0; /* 0x40 */ - u32 rx_hash1; /* 0x44 */ - u32 rx_sta; /* 0x48 */ - u32 rx_io_data; /* 0x4c */ - u32 rx_fbc; /* 0x50 */ - u32 int_ctl; /* 0x54 */ - u32 int_sta; /* 0x58 */ - u32 mac_ctl0; /* 0x5c */ - u32 mac_ctl1; /* 0x60 */ - u32 mac_ipgt; /* 0x64 */ - u32 mac_ipgr; /* 0x68 */ - u32 mac_clrt; /* 0x6c */ - u32 mac_maxf; /* 0x70 */ - u32 mac_supp; /* 0x74 */ - u32 mac_test; /* 0x78 */ - u32 mac_mcfg; /* 0x7c */ - u32 mac_mcmd; /* 0x80 */ - u32 mac_madr; /* 0x84 */ - u32 mac_mwtd; /* 0x88 */ - u32 mac_mrdd; /* 0x8c */ - u32 mac_mind; /* 0x90 */ - u32 mac_ssrr; /* 0x94 */ - u32 mac_a0; /* 0x98 */ - u32 mac_a1; /* 0x9c */ -}; - -/* SRAMC register */ -struct sunxi_sramc_regs { - u32 ctrl0; - u32 ctrl1; -}; - -/* 0: Disable 1: Aborted frame enable(default) */ -#define EMAC_TX_AB_M (0x1 << 0) -/* 0: CPU 1: DMA(default) */ -#define EMAC_TX_TM (0x1 << 1) - -#define EMAC_TX_SETUP (0) - -/* 0: DRQ asserted 1: DRQ automatically(default) */ -#define EMAC_RX_DRQ_MODE (0x1 << 1) -/* 0: CPU 1: DMA(default) */ -#define EMAC_RX_TM (0x1 << 2) -/* 0: Normal(default) 1: Pass all Frames */ -#define EMAC_RX_PA (0x1 << 4) -/* 0: Normal(default) 1: Pass Control Frames */ -#define EMAC_RX_PCF (0x1 << 5) -/* 0: Normal(default) 1: Pass Frames with CRC Error */ -#define EMAC_RX_PCRCE (0x1 << 6) -/* 0: Normal(default) 1: Pass Frames with Length Error */ -#define EMAC_RX_PLE (0x1 << 7) -/* 0: Normal 1: Pass Frames length out of range(default) */ -#define EMAC_RX_POR (0x1 << 8) -/* 0: Not accept 1: Accept unicast Packets(default) */ -#define EMAC_RX_UCAD (0x1 << 16) -/* 0: Normal(default) 1: DA Filtering */ -#define EMAC_RX_DAF (0x1 << 17) -/* 0: Not accept 1: Accept multicast Packets(default) */ -#define EMAC_RX_MCO (0x1 << 20) -/* 0: Disable(default) 1: Enable Hash filter */ -#define EMAC_RX_MHF (0x1 << 21) -/* 0: Not accept 1: Accept Broadcast Packets(default) */ -#define EMAC_RX_BCO (0x1 << 22) -/* 0: Disable(default) 1: Enable SA Filtering */ -#define EMAC_RX_SAF (0x1 << 24) -/* 0: Normal(default) 1: Inverse Filtering */ -#define EMAC_RX_SAIF (0x1 << 25) - -#define EMAC_RX_SETUP (EMAC_RX_POR | EMAC_RX_UCAD | EMAC_RX_DAF | \ - EMAC_RX_MCO | EMAC_RX_BCO) - -/* 0: Disable 1: Enable Receive Flow Control(default) */ -#define EMAC_MAC_CTL0_RFC (0x1 << 2) -/* 0: Disable 1: Enable Transmit Flow Control(default) */ -#define EMAC_MAC_CTL0_TFC (0x1 << 3) - -#define EMAC_MAC_CTL0_SETUP (EMAC_MAC_CTL0_RFC | EMAC_MAC_CTL0_TFC) - -/* 0: Disable 1: Enable MAC Frame Length Checking(default) */ -#define EMAC_MAC_CTL1_FLC (0x1 << 1) -/* 0: Disable(default) 1: Enable Huge Frame */ -#define EMAC_MAC_CTL1_HF (0x1 << 2) -/* 0: Disable(default) 1: Enable MAC Delayed CRC */ -#define EMAC_MAC_CTL1_DCRC (0x1 << 3) -/* 0: Disable 1: Enable MAC CRC(default) */ -#define EMAC_MAC_CTL1_CRC (0x1 << 4) -/* 0: Disable 1: Enable MAC PAD Short frames(default) */ -#define EMAC_MAC_CTL1_PC (0x1 << 5) -/* 0: Disable(default) 1: Enable MAC PAD Short frames and append CRC */ -#define EMAC_MAC_CTL1_VC (0x1 << 6) -/* 0: Disable(default) 1: Enable MAC auto detect Short frames */ -#define EMAC_MAC_CTL1_ADP (0x1 << 7) -/* 0: Disable(default) 1: Enable */ -#define EMAC_MAC_CTL1_PRE (0x1 << 8) -/* 0: Disable(default) 1: Enable */ -#define EMAC_MAC_CTL1_LPE (0x1 << 9) -/* 0: Disable(default) 1: Enable no back off */ -#define EMAC_MAC_CTL1_NB (0x1 << 12) -/* 0: Disable(default) 1: Enable */ -#define EMAC_MAC_CTL1_BNB (0x1 << 13) -/* 0: Disable(default) 1: Enable */ -#define EMAC_MAC_CTL1_ED (0x1 << 14) - -#define EMAC_MAC_CTL1_SETUP (EMAC_MAC_CTL1_FLC | EMAC_MAC_CTL1_CRC | \ - EMAC_MAC_CTL1_PC) - -#define EMAC_MAC_IPGT 0x15 - -#define EMAC_MAC_NBTB_IPG1 0xC -#define EMAC_MAC_NBTB_IPG2 0x12 - -#define EMAC_MAC_CW 0x37 -#define EMAC_MAC_RM 0xF - -#define EMAC_MAC_MFL 0x0600 - -/* Receive status */ -#define EMAC_CRCERR (1 << 4) -#define EMAC_LENERR (3 << 5) - -#define DMA_CPU_TRRESHOLD 2000 - -struct wemac_eth_dev { - u32 speed; - u32 duplex; - u32 phy_configured; - int link_printed; -}; - -struct wemac_rxhdr { - s16 rx_len; - u16 rx_status; -}; - -static void wemac_inblk_32bit(void *reg, void *data, int count) -{ - int cnt = (count + 3) >> 2; - - if (cnt) { - u32 *buf = data; - - do { - u32 x = readl(reg); - *buf++ = x; - } while (--cnt); - } -} - -static void wemac_outblk_32bit(void *reg, void *data, int count) -{ - int cnt = (count + 3) >> 2; - - if (cnt) { - const u32 *buf = data; - - do { - writel(*buf++, reg); - } while (--cnt); - } -} - -/* - * Read a word from phyxcer - */ -static int wemac_phy_read(const char *devname, unsigned char addr, - unsigned char reg, unsigned short *value) -{ - struct eth_device *dev = eth_get_dev_by_name(devname); - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - - /* issue the phy address and reg */ - writel(addr << 8 | reg, ®s->mac_madr); - - /* pull up the phy io line */ - writel(0x1, ®s->mac_mcmd); - - /* Wait read complete */ - mdelay(1); - - /* push down the phy io line */ - writel(0x0, ®s->mac_mcmd); - - /* and write data */ - *value = readl(®s->mac_mrdd); - - return 0; -} - -/* - * Write a word to phyxcer - */ -static int wemac_phy_write(const char *devname, unsigned char addr, - unsigned char reg, unsigned short value) -{ - struct eth_device *dev = eth_get_dev_by_name(devname); - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - - /* issue the phy address and reg */ - writel(addr << 8 | reg, ®s->mac_madr); - - /* pull up the phy io line */ - writel(0x1, ®s->mac_mcmd); - - /* Wait write complete */ - mdelay(1); - - /* push down the phy io line */ - writel(0x0, ®s->mac_mcmd); - - /* and write data */ - writel(value, ®s->mac_mwtd); - - return 0; -} - -static void emac_setup(struct eth_device *dev) -{ - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - u32 reg_val; - u16 phy_val; - u32 duplex_flag; - - /* Set up TX */ - writel(EMAC_TX_SETUP, ®s->tx_mode); - - /* Set up RX */ - writel(EMAC_RX_SETUP, ®s->rx_ctl); - - /* Set MAC */ - /* Set MAC CTL0 */ - writel(EMAC_MAC_CTL0_SETUP, ®s->mac_ctl0); - - /* Set MAC CTL1 */ - wemac_phy_read(dev->name, 1, 0, &phy_val); - debug("PHY SETUP, reg 0 value: %x\n", phy_val); - duplex_flag = !!(phy_val & (1 << 8)); - - reg_val = 0; - if (duplex_flag) - reg_val = (0x1 << 0); - writel(EMAC_MAC_CTL1_SETUP | reg_val, ®s->mac_ctl1); - - /* Set up IPGT */ - writel(EMAC_MAC_IPGT, ®s->mac_ipgt); - - /* Set up IPGR */ - writel(EMAC_MAC_NBTB_IPG2 | (EMAC_MAC_NBTB_IPG1 << 8), ®s->mac_ipgr); - - /* Set up Collison window */ - writel(EMAC_MAC_RM | (EMAC_MAC_CW << 8), ®s->mac_clrt); - - /* Set up Max Frame Length */ - writel(EMAC_MAC_MFL, ®s->mac_maxf); -} - -static void wemac_reset(struct eth_device *dev) -{ - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - - debug("resetting device\n"); - - /* RESET device */ - writel(0, ®s->ctl); - udelay(200); - - writel(1, ®s->ctl); - udelay(200); -} - -static int sunxi_wemac_eth_init(struct eth_device *dev, bd_t *bd) -{ - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - struct wemac_eth_dev *priv = dev->priv; - u16 phy_reg; - - /* Init EMAC */ - - /* Flush RX FIFO */ - setbits_le32(®s->rx_ctl, 0x8); - udelay(1); - - /* Init MAC */ - - /* Soft reset MAC */ - clrbits_le32(®s->mac_ctl0, 1 << 15); - - /* Set MII clock */ - clrsetbits_le32(®s->mac_mcfg, 0xf << 2, 0xd << 2); - - /* Clear RX counter */ - writel(0x0, ®s->rx_fbc); - udelay(1); - - /* Set up EMAC */ - emac_setup(dev); - - writel(dev->enetaddr[0] << 16 | dev->enetaddr[1] << 8 | - dev->enetaddr[2], ®s->mac_a1); - writel(dev->enetaddr[3] << 16 | dev->enetaddr[4] << 8 | - dev->enetaddr[5], ®s->mac_a0); - - mdelay(1); - - wemac_reset(dev); - - /* PHY POWER UP */ - wemac_phy_read(dev->name, 1, 0, &phy_reg); - wemac_phy_write(dev->name, 1, 0, phy_reg & (~(1 << 11))); - mdelay(1); - - wemac_phy_read(dev->name, 1, 0, &phy_reg); - - priv->speed = miiphy_speed(dev->name, 0); - priv->duplex = miiphy_duplex(dev->name, 0); - - /* Print link status only once */ - if (!priv->link_printed) { - printf("ENET Speed is %d Mbps - %s duplex connection\n", - priv->speed, (priv->duplex == HALF) ? "HALF" : "FULL"); - priv->link_printed = 1; - } - - /* Set EMAC SPEED depend on PHY */ - clrsetbits_le32(®s->mac_supp, 1 << 8, - ((phy_reg & (1 << 13)) >> 13) << 8); - - /* Set duplex depend on phy */ - clrsetbits_le32(®s->mac_ctl1, 1 << 0, - ((phy_reg & (1 << 8)) >> 8) << 0); - - /* Enable RX/TX */ - setbits_le32(®s->ctl, 0x7); - - return 0; -} - -static void sunxi_wemac_eth_halt(struct eth_device *dev) -{ - /* Nothing to do here */ -} - -static int sunxi_wemac_eth_recv(struct eth_device *dev) -{ - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - struct wemac_rxhdr rxhdr; - u32 rxcount; - u32 reg_val; - int rx_len; - int rx_status; - int good_packet; - - /* Check packet ready or not */ - - /* - * Race warning: The first packet might arrive with - * the interrupts disabled, but the second will fix - */ - rxcount = readl(®s->rx_fbc); - if (!rxcount) { - /* Had one stuck? */ - rxcount = readl(®s->rx_fbc); - if (!rxcount) - return 0; - } - - reg_val = readl(®s->rx_io_data); - if (reg_val != 0x0143414d) { - /* Disable RX */ - clrbits_le32(®s->ctl, 1 << 2); - - /* Flush RX FIFO */ - setbits_le32(®s->rx_ctl, 1 << 3); - while (readl(®s->rx_ctl) & (1 << 3)) - ; - - /* Enable RX */ - setbits_le32(®s->ctl, 1 << 2); - - return 0; - } - - /* - * A packet ready now - * Get status/length - */ - good_packet = 1; - - wemac_inblk_32bit(®s->rx_io_data, &rxhdr, sizeof(rxhdr)); - - rx_len = rxhdr.rx_len; - rx_status = rxhdr.rx_status; - - /* Packet Status check */ - if (rx_len < 0x40) { - good_packet = 0; - debug("RX: Bad Packet (runt)\n"); - } - - /* rx_status is identical to RSR register. */ - if (0 & rx_status & (EMAC_CRCERR | EMAC_LENERR)) { - good_packet = 0; - if (rx_status & EMAC_CRCERR) - printf("crc error\n"); - if (rx_status & EMAC_LENERR) - printf("length error\n"); - } - - /* Move data from WEMAC */ - if (good_packet) { - if (rx_len > DMA_CPU_TRRESHOLD) { - printf("Received packet is too big (len=%d)\n", rx_len); - } else { - wemac_inblk_32bit((void *)®s->rx_io_data, - NetRxPackets[0], rx_len); - - /* Pass to upper layer */ - NetReceive(NetRxPackets[0], rx_len); - return rx_len; - } - } - - return 0; -} - -static int sunxi_wemac_eth_send(struct eth_device *dev, void *packet, int len) -{ - struct wemac_regs *regs = (struct wemac_regs *)dev->iobase; - - /* Select channel 0 */ - writel(0, ®s->tx_ins); - - /* Write packet */ - wemac_outblk_32bit((void *)®s->tx_io_data, packet, len); - - /* Set TX len */ - writel(len, ®s->tx_pl0); - - /* Start translate from fifo to phy */ - setbits_le32(®s->tx_ctl0, 1); - - return 0; -} - -int sunxi_wemac_initialize(void) -{ - struct sunxi_ccm_reg *const ccm = - (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - struct sunxi_sramc_regs *sram = - (struct sunxi_sramc_regs *)SUNXI_SRAMC_BASE; - struct eth_device *dev; - struct wemac_eth_dev *priv; - int pin; - - dev = malloc(sizeof(*dev)); - if (dev == NULL) - return -ENOMEM; - - priv = (struct wemac_eth_dev *)malloc(sizeof(struct wemac_eth_dev)); - if (!priv) { - free(dev); - return -ENOMEM; - } - - memset(dev, 0, sizeof(*dev)); - memset(priv, 0, sizeof(struct wemac_eth_dev)); - - /* Map SRAM to EMAC */ - setbits_le32(&sram->ctrl1, 0x5 << 2); - - /* Configure pin mux settings for MII Ethernet */ - for (pin = SUNXI_GPA(0); pin <= SUNXI_GPA(17); pin++) - sunxi_gpio_set_cfgpin(pin, 2); - - /* Set up clock gating */ - setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_EMAC); - - dev->iobase = SUNXI_EMAC_BASE; - dev->priv = priv; - dev->init = sunxi_wemac_eth_init; - dev->halt = sunxi_wemac_eth_halt; - dev->send = sunxi_wemac_eth_send; - dev->recv = sunxi_wemac_eth_recv; - strcpy(dev->name, "wemac"); - - eth_register(dev); - - miiphy_register(dev->name, wemac_phy_read, wemac_phy_write); - - return 0; -} -- cgit v1.1 From 0db2bbdc04c7ba41861e686acb815fce5a227a01 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 13 Jun 2014 22:55:48 +0200 Subject: mvtwsi: convert to CONFIG_SYS_I2C framework Note this has only been tested on Allwinner sunxi devices (support for which gets introduced by a later patch). The kirkwood changes have been compile tested using the wireless_space board config, the orion5x changes have been compile tested using the edminiv2 board config. Signed-off-by: Hans de Goede Acked-by: Heiko Schocher --- drivers/i2c/Makefile | 2 +- drivers/i2c/mvtwsi.c | 70 ++++++++++++++++++++++++---------------------------- 2 files changed, 33 insertions(+), 39 deletions(-) (limited to 'drivers') diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index e33586d..61e9f3c 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_BFIN_TWI_I2C) += bfin-twi_i2c.o obj-$(CONFIG_DW_I2C) += designware_i2c.o -obj-$(CONFIG_I2C_MVTWSI) += mvtwsi.o obj-$(CONFIG_I2C_MV) += mv_i2c.o obj-$(CONFIG_I2C_MXS) += mxs_i2c.o obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o @@ -19,6 +18,7 @@ obj-$(CONFIG_SYS_I2C_DAVINCI) += davinci_i2c.o obj-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o obj-$(CONFIG_SYS_I2C_FTI2C010) += fti2c010.o obj-$(CONFIG_SYS_I2C_KONA) += kona_i2c.o +obj-$(CONFIG_SYS_I2C_MVTWSI) += mvtwsi.o obj-$(CONFIG_SYS_I2C_MXC) += mxc_i2c.o obj-$(CONFIG_SYS_I2C_OMAP24XX) += omap24xx_i2c.o obj-$(CONFIG_SYS_I2C_OMAP34XX) += omap24xx_i2c.o diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index 5ba0e03..c8b5425 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -220,11 +220,10 @@ static int twsi_stop(int status) /* * Reset controller. - * Called at end of i2c_init unsuccessful i2c transactions. * Controller reset also resets the baud rate and slave address, so - * re-establish them. + * they must be re-established afterwards. */ -static void twsi_reset(u8 baud_rate, u8 slave_address) +static void twsi_reset(struct i2c_adapter *adap) { /* ensure controller will be enabled by any twsi*() function */ twsi_control_flags = MVTWSI_CONTROL_TWSIEN; @@ -232,23 +231,17 @@ static void twsi_reset(u8 baud_rate, u8 slave_address) writel(0, &twsi->soft_reset); /* wait 2 ms -- this is what the Marvell LSP does */ udelay(20000); - /* set baud rate */ - writel(baud_rate, &twsi->baudrate); - /* set slave address even though we don't use it */ - writel(slave_address, &twsi->slave_address); - writel(0, &twsi->xtnd_slave_addr); - /* assert STOP but don't care for the result */ - (void) twsi_stop(0); } /* * I2C init called by cmd_i2c when doing 'i2c reset'. * Sets baud to the highest possible value not exceeding requested one. */ -void i2c_init(int requested_speed, int slaveadd) +static unsigned int twsi_i2c_set_bus_speed(struct i2c_adapter *adap, + unsigned int requested_speed) { - int tmp_speed, highest_speed, n, m; - int baud = 0x44; /* baudrate at controller reset */ + unsigned int tmp_speed, highest_speed, n, m; + unsigned int baud = 0x44; /* baudrate at controller reset */ /* use actual speed to collect progressively higher values */ highest_speed = 0; @@ -263,8 +256,21 @@ void i2c_init(int requested_speed, int slaveadd) } } } + writel(baud, &twsi->baudrate); + return 0; +} + +static void twsi_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) +{ /* reset controller */ - twsi_reset(baud, slaveadd); + twsi_reset(adap); + /* set speed */ + twsi_i2c_set_bus_speed(adap, speed); + /* set slave address even though we don't use it */ + writel(slaveadd, &twsi->slave_address); + writel(0, &twsi->xtnd_slave_addr); + /* assert STOP but don't care for the result */ + (void) twsi_stop(0); } /* @@ -294,7 +300,7 @@ static int i2c_begin(int expected_start_status, u8 addr) * I2C probe called by cmd_i2c when doing 'i2c probe'. * Begin read, nak data byte, end. */ -int i2c_probe(uchar chip) +static int twsi_i2c_probe(struct i2c_adapter *adap, uchar chip) { u8 dummy_byte; int status; @@ -320,12 +326,13 @@ int i2c_probe(uchar chip) * cmd_eeprom, so we have to choose here, and for the moment that'll be * a repeated start without a preceding stop. */ -int i2c_read(u8 dev, uint addr, int alen, u8 *data, int length) +static int twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) { int status; /* begin i2c write to send the address bytes */ - status = i2c_begin(MVTWSI_STATUS_START, (dev << 1)); + status = i2c_begin(MVTWSI_STATUS_START, (chip << 1)); /* send addr bytes */ while ((status == 0) && alen--) status = twsi_send(addr >> (8*alen), @@ -333,7 +340,7 @@ int i2c_read(u8 dev, uint addr, int alen, u8 *data, int length) /* begin i2c read to receive eeprom data bytes */ if (status == 0) status = i2c_begin( - MVTWSI_STATUS_REPEATED_START, (dev << 1) | 1); + MVTWSI_STATUS_REPEATED_START, (chip << 1) | 1); /* prepare ACK if at least one byte must be received */ if (length > 0) twsi_control_flags |= MVTWSI_CONTROL_ACK; @@ -355,12 +362,13 @@ int i2c_read(u8 dev, uint addr, int alen, u8 *data, int length) * I2C write called by cmd_i2c when doing 'i2c write' and by cmd_eeprom.c * Begin write, send address byte(s), send data bytes, end. */ -int i2c_write(u8 dev, uint addr, int alen, u8 *data, int length) +static int twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, + int alen, uchar *data, int length) { int status; /* begin i2c write to send the eeprom adress bytes then data bytes */ - status = i2c_begin(MVTWSI_STATUS_START, (dev << 1)); + status = i2c_begin(MVTWSI_STATUS_START, (chip << 1)); /* send addr bytes */ while ((status == 0) && alen--) status = twsi_send(addr >> (8*alen), @@ -374,21 +382,7 @@ int i2c_write(u8 dev, uint addr, int alen, u8 *data, int length) return status; } -/* - * Bus set routine: we only support bus 0. - */ -int i2c_set_bus_num(unsigned int bus) -{ - if (bus > 0) { - return -1; - } - return 0; -} - -/* - * Bus get routine: hard-return bus 0. - */ -unsigned int i2c_get_bus_num(void) -{ - return 0; -} +U_BOOT_I2C_ADAP_COMPLETE(twsi0, twsi_i2c_init, twsi_i2c_probe, + twsi_i2c_read, twsi_i2c_write, + twsi_i2c_set_bus_speed, + CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, 0) -- cgit v1.1 From 6620377e4b8be3c232c59d673efcd673c30bc69f Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 13 Jun 2014 22:55:49 +0200 Subject: sunxi: Add i2c support Add support for the i2c controller found on all Allwinner sunxi SoCs, this is the same controller as found on the Marvell orion5x and kirkwood SoC families, with a slightly different register layout, so this patch uses the existing mvtwsi code. Signed-off-by: Hans de Goede Acked-by: Ian Campbell Acked-By: Prafulla Wadaskar Acked-by: Heiko Schocher [ ijc -- updated u-boot-spl-fel.lds ] --- drivers/i2c/mvtwsi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers') diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index c8b5425..ab3ffa0 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -22,6 +22,8 @@ #include #elif defined(CONFIG_KIRKWOOD) #include +#elif defined(CONFIG_SUNXI) +#include #else #error Driver mvtwsi not supported by SoC or board #endif @@ -30,6 +32,20 @@ * TWSI register structure */ +#ifdef CONFIG_SUNXI + +struct mvtwsi_registers { + u32 slave_address; + u32 xtnd_slave_addr; + u32 data; + u32 control; + u32 status; + u32 baudrate; + u32 soft_reset; +}; + +#else + struct mvtwsi_registers { u32 slave_address; u32 data; @@ -43,6 +59,8 @@ struct mvtwsi_registers { u32 soft_reset; }; +#endif + /* * Control register fields */ -- cgit v1.1 From 14bc66bd9a1d8073a12c6e785ab379909f620356 Mon Sep 17 00:00:00 2001 From: Henrik Nordstrom Date: Fri, 13 Jun 2014 22:55:50 +0200 Subject: sunxi: Add axp209 pmic support Add support for the x-powers axp209 pmic which is found on most A10, A13 and A20 boards. And enable AXP209 support for the Cubietruck and Cubieboard boards. Signed-off-by: Henrik Nordstrom Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- drivers/power/Makefile | 1 + drivers/power/axp209.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 168 insertions(+) create mode 100644 drivers/power/axp209.c (limited to 'drivers') diff --git a/drivers/power/Makefile b/drivers/power/Makefile index 53ff97d..063ac8f 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -5,6 +5,7 @@ # SPDX-License-Identifier: GPL-2.0+ # +obj-$(CONFIG_AXP209_POWER) += axp209.o obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c new file mode 100644 index 0000000..9798e5b --- /dev/null +++ b/drivers/power/axp209.c @@ -0,0 +1,167 @@ +/* + * (C) Copyright 2012 + * Henrik Nordstrom + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +enum axp209_reg { + AXP209_POWER_STATUS = 0x00, + AXP209_CHIP_VERSION = 0x03, + AXP209_DCDC2_VOLTAGE = 0x23, + AXP209_DCDC3_VOLTAGE = 0x27, + AXP209_LDO24_VOLTAGE = 0x28, + AXP209_LDO3_VOLTAGE = 0x29, + AXP209_IRQ_STATUS5 = 0x4c, + AXP209_SHUTDOWN = 0x32, +}; + +#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0) + +#define AXP209_IRQ5_PEK_UP (1 << 6) +#define AXP209_IRQ5_PEK_DOWN (1 << 5) + +#define AXP209_POWEROFF (1 << 7) + +static int axp209_write(enum axp209_reg reg, u8 val) +{ + return i2c_write(0x34, reg, 1, &val, 1); +} + +static int axp209_read(enum axp209_reg reg, u8 *val) +{ + return i2c_read(0x34, reg, 1, val, 1); +} + +static u8 axp209_mvolt_to_cfg(int mvolt, int min, int max, int div) +{ + if (mvolt < min) + mvolt = min; + else if (mvolt > max) + mvolt = max; + + return (mvolt - min) / div; +} + +int axp209_set_dcdc2(int mvolt) +{ + int rc; + u8 cfg, current; + + cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25); + + /* Do we really need to be this gentle? It has built-in voltage slope */ + while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 && + current != cfg) { + if (current < cfg) + current++; + else + current--; + + rc = axp209_write(AXP209_DCDC2_VOLTAGE, current); + if (rc) + break; + } + + return rc; +} + +int axp209_set_dcdc3(int mvolt) +{ + u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25); + + return axp209_write(AXP209_DCDC3_VOLTAGE, cfg); +} + +int axp209_set_ldo2(int mvolt) +{ + int rc; + u8 cfg, reg; + + cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100); + + rc = axp209_read(AXP209_LDO24_VOLTAGE, ®); + if (rc) + return rc; + + /* LDO2 configuration is in upper 4 bits */ + reg = (reg & 0x0f) | (cfg << 4); + return axp209_write(AXP209_LDO24_VOLTAGE, reg); +} + +int axp209_set_ldo3(int mvolt) +{ + u8 cfg; + + if (mvolt == -1) + cfg = 0x80; /* determined by LDO3IN pin */ + else + cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25); + + return axp209_write(AXP209_LDO3_VOLTAGE, cfg); +} + +int axp209_set_ldo4(int mvolt) +{ + int rc; + static const int vindex[] = { + 1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500, + 2700, 2800, 3000, 3100, 3200, 3300 + }; + u8 cfg, reg; + + /* Translate mvolt to register cfg value, requested <= selected */ + for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--); + + rc = axp209_read(AXP209_LDO24_VOLTAGE, ®); + if (rc) + return rc; + + /* LDO4 configuration is in lower 4 bits */ + reg = (reg & 0xf0) | (cfg << 0); + return axp209_write(AXP209_LDO24_VOLTAGE, reg); +} + +int axp209_init(void) +{ + u8 ver; + int rc; + + rc = axp209_read(AXP209_CHIP_VERSION, &ver); + if (rc) + return rc; + + /* Low 4 bits is chip version */ + ver &= 0x0f; + + if (ver != 0x1) + return -1; + + return 0; +} + +int axp209_poweron_by_dc(void) +{ + u8 v; + + if (axp209_read(AXP209_POWER_STATUS, &v)) + return 0; + + return (v & AXP209_POWER_STATUS_ON_BY_DC); +} + +int axp209_power_button(void) +{ + u8 v; + + if (axp209_read(AXP209_IRQ_STATUS5, &v)) + return 0; + + axp209_write(AXP209_IRQ_STATUS5, AXP209_IRQ5_PEK_DOWN); + + return v & AXP209_IRQ5_PEK_DOWN; +} -- cgit v1.1 From 24289208354c143967968755cff5c825a12e3f90 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 13 Jun 2014 22:55:51 +0200 Subject: sunxi: Add axp152 pmic support Add support for the x-powers axp152 pmic which is found on most A10s boards and enable it for the r7-tv-dongle board. Signed-off-by: Henrik Nordstrom Signed-off-by: Ian Campbell Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- drivers/power/Makefile | 1 + drivers/power/axp152.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) create mode 100644 drivers/power/axp152.c (limited to 'drivers') diff --git a/drivers/power/Makefile b/drivers/power/Makefile index 063ac8f..dc64e4d 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -5,6 +5,7 @@ # SPDX-License-Identifier: GPL-2.0+ # +obj-$(CONFIG_AXP152_POWER) += axp152.o obj-$(CONFIG_AXP209_POWER) += axp209.o obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o diff --git a/drivers/power/axp152.c b/drivers/power/axp152.c new file mode 100644 index 0000000..fa4ea05 --- /dev/null +++ b/drivers/power/axp152.c @@ -0,0 +1,97 @@ +/* + * (C) Copyright 2012 + * Henrik Nordstrom + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include +#include + +enum axp152_reg { + AXP152_CHIP_VERSION = 0x3, + AXP152_DCDC2_VOLTAGE = 0x23, + AXP152_DCDC3_VOLTAGE = 0x27, + AXP152_DCDC4_VOLTAGE = 0x2B, + AXP152_LDO2_VOLTAGE = 0x2A, + AXP152_SHUTDOWN = 0x32, +}; + +#define AXP152_POWEROFF (1 << 7) + +static int axp152_write(enum axp152_reg reg, u8 val) +{ + return i2c_write(0x30, reg, 1, &val, 1); +} + +static int axp152_read(enum axp152_reg reg, u8 *val) +{ + return i2c_read(0x30, reg, 1, val, 1); +} + +static u8 axp152_mvolt_to_target(int mvolt, int min, int max, int div) +{ + if (mvolt < min) + mvolt = min; + else if (mvolt > max) + mvolt = max; + + return (mvolt - min) / div; +} + +int axp152_set_dcdc2(int mvolt) +{ + int rc; + u8 current, target; + + target = axp152_mvolt_to_target(mvolt, 700, 2275, 25); + + /* Do we really need to be this gentle? It has built-in voltage slope */ + while ((rc = axp152_read(AXP152_DCDC2_VOLTAGE, ¤t)) == 0 && + current != target) { + if (current < target) + current++; + else + current--; + rc = axp152_write(AXP152_DCDC2_VOLTAGE, current); + if (rc) + break; + } + return rc; +} + +int axp152_set_dcdc3(int mvolt) +{ + u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 25); + + return axp152_write(AXP152_DCDC3_VOLTAGE, target); +} + +int axp152_set_dcdc4(int mvolt) +{ + u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 25); + + return axp152_write(AXP152_DCDC4_VOLTAGE, target); +} + +int axp152_set_ldo2(int mvolt) +{ + u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 100); + + return axp152_write(AXP152_LDO2_VOLTAGE, target); +} + +int axp152_init(void) +{ + u8 ver; + int rc; + + rc = axp152_read(AXP152_CHIP_VERSION, &ver); + if (rc) + return rc; + + if (ver != 0x05) + return -1; + + return 0; +} -- cgit v1.1 From abce2c6220c1f8f4b66e464adc1074e04a8f19eb Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Thu, 5 Jun 2014 19:00:15 +0100 Subject: sunxi: add gpio driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch enables CONFIG_CMD_GPIO for the Allwinner (sunxi) platform as well as providing the common gpio API (gpio_request/free, direction in/out, get/set etc). Signed-off-by: Chen-Yu Tsai Signed-off-by: Hans de Goede Signed-off-by: Ma Haijun Signed-off-by: Oliver Schinagl Signed-off-by: Ian Campbell Cc: Henrik Nordström Cc: Tom Cubie Acked-by: Hans de Goede --- drivers/gpio/Makefile | 1 + drivers/gpio/sunxi_gpio.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 103 insertions(+) create mode 100644 drivers/gpio/sunxi_gpio.c (limited to 'drivers') diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 4e001e1..86813b9 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -34,3 +34,4 @@ obj-$(CONFIG_XILINX_GPIO) += xilinx_gpio.o obj-$(CONFIG_ADI_GPIO2) += adi_gpio2.o obj-$(CONFIG_TCA642X) += tca642x.o oby-$(CONFIG_SX151X) += sx151x.o +obj-$(CONFIG_SUNXI_GPIO) += sunxi_gpio.o diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c new file mode 100644 index 0000000..0c50a8f --- /dev/null +++ b/drivers/gpio/sunxi_gpio.c @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2012 Henrik Nordstrom + * + * Based on earlier arch/arm/cpu/armv7/sunxi/gpio.c: + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. + * Tom Cubie + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +static int sunxi_gpio_output(u32 pin, u32 val) +{ + u32 dat; + u32 bank = GPIO_BANK(pin); + u32 num = GPIO_NUM(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + dat = readl(&pio->dat); + if (val) + dat |= 0x1 << num; + else + dat &= ~(0x1 << num); + + writel(dat, &pio->dat); + + return 0; +} + +static int sunxi_gpio_input(u32 pin) +{ + u32 dat; + u32 bank = GPIO_BANK(pin); + u32 num = GPIO_NUM(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + dat = readl(&pio->dat); + dat >>= num; + + return dat & 0x1; +} + +int gpio_request(unsigned gpio, const char *label) +{ + return 0; +} + +int gpio_free(unsigned gpio) +{ + return 0; +} + +int gpio_direction_input(unsigned gpio) +{ + sunxi_gpio_set_cfgpin(gpio, SUNXI_GPIO_INPUT); + + return sunxi_gpio_input(gpio); +} + +int gpio_direction_output(unsigned gpio, int value) +{ + sunxi_gpio_set_cfgpin(gpio, SUNXI_GPIO_OUTPUT); + + return sunxi_gpio_output(gpio, value); +} + +int gpio_get_value(unsigned gpio) +{ + return sunxi_gpio_input(gpio); +} + +int gpio_set_value(unsigned gpio, int value) +{ + return sunxi_gpio_output(gpio, value); +} + +int sunxi_name_to_gpio(const char *name) +{ + int group = 0; + int groupsize = 9 * 32; + long pin; + char *eptr; + if (*name == 'P' || *name == 'p') + name++; + if (*name >= 'A') { + group = *name - (*name > 'a' ? 'a' : 'A'); + groupsize = 32; + name++; + } + + pin = simple_strtol(name, &eptr, 10); + if (!*name || *eptr) + return -1; + if (pin < 0 || pin > groupsize || group >= 9) + return -1; + return group * 32 + pin; +} -- cgit v1.1