diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.14/200-mmc-add-driver.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.14/200-mmc-add-driver.patch | 1150 |
1 files changed, 0 insertions, 1150 deletions
diff --git a/target/linux/sunxi/patches-3.14/200-mmc-add-driver.patch b/target/linux/sunxi/patches-3.14/200-mmc-add-driver.patch deleted file mode 100644 index ece71540c3..0000000000 --- a/target/linux/sunxi/patches-3.14/200-mmc-add-driver.patch +++ /dev/null @@ -1,1150 +0,0 @@ -From a2fb45195f1b90058e96e09892c071ef4207b593 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?David=20Lanzend=C3=B6rfer?= <david.lanzendoerfer@o2s.ch> -Date: Sat, 22 Feb 2014 09:13:55 +0100 -Subject: [PATCH] ARM: sunxi: Add driver for SD/MMC hosts found on Allwinner - sunxi SoCs -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This is based on the driver Allwinner ships in their Android kernel sources. - -Initial porting to upstream kernels done by David Lanzendörfer, additional -fixes and cleanups by Hans de Goede. - -It uses dma in bus-master mode using a built-in designware idmac controller, -which is identical to the one found in the mmc-dw hosts. -The rest of the host is not identical to mmc-dw. - -Signed-off-by: David Lanzendörfer <david.lanzendoerfer@o2s.ch> -Signed-off-by: Hans de Goede <hdegoede@redhat.com> ---- - drivers/mmc/host/Kconfig | 7 + - drivers/mmc/host/Makefile | 2 + - drivers/mmc/host/sunxi-mmc.c | 853 +++++++++++++++++++++++++++++++++++++++++++ - drivers/mmc/host/sunxi-mmc.h | 238 ++++++++++++ - 4 files changed, 1100 insertions(+) - create mode 100644 drivers/mmc/host/sunxi-mmc.c - create mode 100644 drivers/mmc/host/sunxi-mmc.h - ---- a/drivers/mmc/host/Kconfig -+++ b/drivers/mmc/host/Kconfig -@@ -714,3 +714,10 @@ config MMC_REALTEK_PCI - help - Say Y here to include driver code to support SD/MMC card interface - of Realtek PCI-E card reader -+ -+config MMC_SUNXI -+ tristate "Allwinner sunxi SD/MMC Host Controller support" -+ depends on ARCH_SUNXI -+ help -+ This selects support for the SD/MMC Host Controller on -+ Allwinner sunxi SoCs. ---- a/drivers/mmc/host/Makefile -+++ b/drivers/mmc/host/Makefile -@@ -55,6 +55,8 @@ obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o - - obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o - -+obj-$(CONFIG_MMC_SUNXI) += sunxi-mmc.o -+ - obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o - obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o - obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o ---- /dev/null -+++ b/drivers/mmc/host/sunxi-mmc.c -@@ -0,0 +1,853 @@ -+/* -+ * Driver for sunxi SD/MMC host controllers -+ * (C) Copyright 2007-2011 Reuuimlla Technology Co., Ltd. -+ * (C) Copyright 2007-2011 Aaron Maoye <leafy.myeh@reuuimllatech.com> -+ * (C) Copyright 2013-2014 O2S GmbH <www.o2s.ch> -+ * (C) Copyright 2013-2014 David Lanzendörfer <david.lanzendoerfer@o2s.ch> -+ * (C) Copyright 2013-2014 Hans de Goede <hdegoede@redhat.com> -+ * -+ * 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. -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/io.h> -+#include <linux/device.h> -+#include <linux/interrupt.h> -+#include <linux/delay.h> -+#include <linux/err.h> -+ -+#include <linux/clk.h> -+#include <linux/clk-private.h> -+#include <linux/clk/sunxi.h> -+ -+#include <linux/gpio.h> -+#include <linux/platform_device.h> -+#include <linux/spinlock.h> -+#include <linux/scatterlist.h> -+#include <linux/dma-mapping.h> -+#include <linux/slab.h> -+#include <linux/regulator/consumer.h> -+ -+#include <linux/of_address.h> -+#include <linux/of_gpio.h> -+#include <linux/of_platform.h> -+ -+#include <linux/mmc/host.h> -+#include <linux/mmc/sd.h> -+#include <linux/mmc/sdio.h> -+#include <linux/mmc/mmc.h> -+#include <linux/mmc/core.h> -+#include <linux/mmc/card.h> -+#include <linux/mmc/slot-gpio.h> -+ -+#include "sunxi-mmc.h" -+ -+static int sunxi_mmc_init_host(struct mmc_host *mmc) -+{ -+ u32 rval; -+ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); -+ int ret; -+ -+ ret = clk_prepare_enable(smc_host->clk_ahb); -+ if (ret) { -+ dev_err(mmc_dev(smc_host->mmc), "AHB clk err %d\n", ret); -+ return ret; -+ } -+ ret = clk_prepare_enable(smc_host->clk_mod); -+ if (ret) { -+ dev_err(mmc_dev(smc_host->mmc), "MOD clk err %d\n", ret); -+ clk_disable_unprepare(smc_host->clk_ahb); -+ return ret; -+ } -+ -+ /* reset controller */ -+ rval = mci_readl(smc_host, REG_GCTRL) | SDXC_HARDWARE_RESET; -+ mci_writel(smc_host, REG_GCTRL, rval); -+ -+ mci_writel(smc_host, REG_FTRGL, 0x20070008); -+ mci_writel(smc_host, REG_TMOUT, 0xffffffff); -+ mci_writel(smc_host, REG_IMASK, smc_host->sdio_imask); -+ mci_writel(smc_host, REG_RINTR, 0xffffffff); -+ mci_writel(smc_host, REG_DBGC, 0xdeb); -+ mci_writel(smc_host, REG_FUNS, 0xceaa0000); -+ mci_writel(smc_host, REG_DLBA, smc_host->sg_dma); -+ rval = mci_readl(smc_host, REG_GCTRL)|SDXC_INTERRUPT_ENABLE_BIT; -+ rval &= ~SDXC_ACCESS_DONE_DIRECT; -+ mci_writel(smc_host, REG_GCTRL, rval); -+ -+ return 0; -+} -+ -+static void sunxi_mmc_exit_host(struct sunxi_mmc_host *smc_host) -+{ -+ mci_writel(smc_host, REG_GCTRL, SDXC_HARDWARE_RESET); -+ clk_disable_unprepare(smc_host->clk_ahb); -+ clk_disable_unprepare(smc_host->clk_mod); -+} -+ -+/* /\* UHS-I Operation Modes */ -+/* * DS 25MHz 12.5MB/s 3.3V */ -+/* * HS 50MHz 25MB/s 3.3V */ -+/* * SDR12 25MHz 12.5MB/s 1.8V */ -+/* * SDR25 50MHz 25MB/s 1.8V */ -+/* * SDR50 100MHz 50MB/s 1.8V */ -+/* * SDR104 208MHz 104MB/s 1.8V */ -+/* * DDR50 50MHz 50MB/s 1.8V */ -+/* * MMC Operation Modes */ -+/* * DS 26MHz 26MB/s 3/1.8/1.2V */ -+/* * HS 52MHz 52MB/s 3/1.8/1.2V */ -+/* * HSDDR 52MHz 104MB/s 3/1.8/1.2V */ -+/* * HS200 200MHz 200MB/s 1.8/1.2V */ -+/* * */ -+/* * Spec. Timing */ -+/* * SD3.0 */ -+/* * Fcclk Tcclk Fsclk Tsclk Tis Tih odly RTis RTih */ -+/* * 400K 2.5us 24M 41ns 5ns 5ns 1 2209ns 41ns */ -+/* * 25M 40ns 600M 1.67ns 5ns 5ns 3 14.99ns 5.01ns */ -+/* * 50M 20ns 600M 1.67ns 6ns 2ns 3 14.99ns 5.01ns */ -+/* * 50MDDR 20ns 600M 1.67ns 6ns 0.8ns 2 6.67ns 3.33ns */ -+/* * 104M 9.6ns 600M 1.67ns 3ns 0.8ns 1 7.93ns 1.67ns */ -+/* * 208M 4.8ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */ -+ -+/* * 25M 40ns 300M 3.33ns 5ns 5ns 2 13.34ns 6.66ns */ -+/* * 50M 20ns 300M 3.33ns 6ns 2ns 2 13.34ns 6.66ns */ -+/* * 50MDDR 20ns 300M 3.33ns 6ns 0.8ns 1 6.67ns 3.33ns */ -+/* * 104M 9.6ns 300M 3.33ns 3ns 0.8ns 0 7.93ns 1.67ns */ -+/* * 208M 4.8ns 300M 3.33ns 1.4ns 0.8ns 0 3.13ns 1.67ns */ -+ -+/* * eMMC4.5 */ -+/* * 400K 2.5us 24M 41ns 3ns 3ns 1 2209ns 41ns */ -+/* * 25M 40ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */ -+/* * 50M 20ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */ -+/* * 50MDDR 20ns 600M 1.67ns 2.5ns 2.5ns 2 6.67ns 3.33ns */ -+/* * 200M 5ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */ -+/* *\/ */ -+ -+static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, -+ struct mmc_data *data) -+{ -+ struct sunxi_idma_des *pdes = (struct sunxi_idma_des *)host->sg_cpu; -+ struct sunxi_idma_des *pdes_pa = (struct sunxi_idma_des *)host->sg_dma; -+ int i, max_len = (1 << host->idma_des_size_bits); -+ -+ for (i = 0; i < data->sg_len; i++) { -+ pdes[i].config = SDXC_IDMAC_DES0_CH | SDXC_IDMAC_DES0_OWN | -+ SDXC_IDMAC_DES0_DIC; -+ -+ if (data->sg[i].length == max_len) -+ pdes[i].buf_size = 0; /* 0 == max_len */ -+ else -+ pdes[i].buf_size = data->sg[i].length; -+ -+ pdes[i].buf_addr_ptr1 = sg_dma_address(&data->sg[i]); -+ pdes[i].buf_addr_ptr2 = (u32)&pdes_pa[i + 1]; -+ } -+ -+ pdes[0].config |= SDXC_IDMAC_DES0_FD; -+ pdes[i - 1].config = SDXC_IDMAC_DES0_OWN | SDXC_IDMAC_DES0_LD; -+ -+ wmb(); /* Ensure idma_des hit main mem before we start the idmac */ -+} -+ -+static enum dma_data_direction sunxi_mmc_get_dma_dir(struct mmc_data *data) -+{ -+ if (data->flags & MMC_DATA_WRITE) -+ return DMA_TO_DEVICE; -+ else -+ return DMA_FROM_DEVICE; -+} -+ -+static int sunxi_mmc_prepare_dma(struct sunxi_mmc_host *smc_host, -+ struct mmc_data *data) -+{ -+ u32 dma_len; -+ u32 i; -+ u32 temp; -+ struct scatterlist *sg; -+ -+ dma_len = dma_map_sg(mmc_dev(smc_host->mmc), data->sg, data->sg_len, -+ sunxi_mmc_get_dma_dir(data)); -+ if (dma_len == 0) { -+ dev_err(mmc_dev(smc_host->mmc), "dma_map_sg failed\n"); -+ return -ENOMEM; -+ } -+ -+ for_each_sg(data->sg, sg, data->sg_len, i) { -+ if (sg->offset & 3 || sg->length & 3) { -+ dev_err(mmc_dev(smc_host->mmc), -+ "unaligned scatterlist: os %x length %d\n", -+ sg->offset, sg->length); -+ return -EINVAL; -+ } -+ } -+ -+ sunxi_mmc_init_idma_des(smc_host, data); -+ -+ temp = mci_readl(smc_host, REG_GCTRL); -+ temp |= SDXC_DMA_ENABLE_BIT; -+ mci_writel(smc_host, REG_GCTRL, temp); -+ temp |= SDXC_DMA_RESET; -+ mci_writel(smc_host, REG_GCTRL, temp); -+ mci_writel(smc_host, REG_DMAC, SDXC_IDMAC_SOFT_RESET); -+ -+ if (!(data->flags & MMC_DATA_WRITE)) -+ mci_writel(smc_host, REG_IDIE, SDXC_IDMAC_RECEIVE_INTERRUPT); -+ -+ mci_writel(smc_host, REG_DMAC, SDXC_IDMAC_FIX_BURST | SDXC_IDMAC_IDMA_ON); -+ -+ return 0; -+} -+ -+static void sunxi_mmc_send_manual_stop(struct sunxi_mmc_host *host, -+ struct mmc_request *req) -+{ -+ u32 cmd_val = SDXC_START | SDXC_RESP_EXPIRE | SDXC_STOP_ABORT_CMD -+ | SDXC_CHECK_RESPONSE_CRC | MMC_STOP_TRANSMISSION; -+ u32 ri = 0; -+ unsigned long expire = jiffies + msecs_to_jiffies(1000); -+ -+ mci_writel(host, REG_CARG, 0); -+ mci_writel(host, REG_CMDR, cmd_val); -+ -+ do { -+ ri = mci_readl(host, REG_RINTR); -+ } while (!(ri & (SDXC_COMMAND_DONE | SDXC_INTERRUPT_ERROR_BIT)) && -+ time_before(jiffies, expire)); -+ -+ if (ri & SDXC_INTERRUPT_ERROR_BIT) { -+ dev_err(mmc_dev(host->mmc), "send stop command failed\n"); -+ if (req->stop) -+ req->stop->resp[0] = -ETIMEDOUT; -+ } else { -+ if (req->stop) -+ req->stop->resp[0] = mci_readl(host, REG_RESP0); -+ } -+ -+ mci_writel(host, REG_RINTR, 0xffff); -+} -+ -+static void sunxi_mmc_dump_errinfo(struct sunxi_mmc_host *smc_host) -+{ -+ struct mmc_command *cmd = smc_host->mrq->cmd; -+ struct mmc_data *data = smc_host->mrq->data; -+ -+ /* For some cmds timeout is normal with sd/mmc cards */ -+ if ((smc_host->int_sum & SDXC_INTERRUPT_ERROR_BIT) == SDXC_RESP_TIMEOUT && -+ (cmd->opcode == SD_IO_SEND_OP_COND || cmd->opcode == SD_IO_RW_DIRECT)) -+ return; -+ -+ dev_err(mmc_dev(smc_host->mmc), -+ "smc %d err, cmd %d,%s%s%s%s%s%s%s%s%s%s !!\n", -+ smc_host->mmc->index, cmd->opcode, -+ data ? (data->flags & MMC_DATA_WRITE ? " WR" : " RD") : "", -+ smc_host->int_sum & SDXC_RESP_ERROR ? " RE" : "", -+ smc_host->int_sum & SDXC_RESP_CRC_ERROR ? " RCE" : "", -+ smc_host->int_sum & SDXC_DATA_CRC_ERROR ? " DCE" : "", -+ smc_host->int_sum & SDXC_RESP_TIMEOUT ? " RTO" : "", -+ smc_host->int_sum & SDXC_DATA_TIMEOUT ? " DTO" : "", -+ smc_host->int_sum & SDXC_FIFO_RUN_ERROR ? " FE" : "", -+ smc_host->int_sum & SDXC_HARD_WARE_LOCKED ? " HL" : "", -+ smc_host->int_sum & SDXC_START_BIT_ERROR ? " SBE" : "", -+ smc_host->int_sum & SDXC_END_BIT_ERROR ? " EBE" : "" -+ ); -+} -+ -+static void sunxi_mmc_finalize_request(struct sunxi_mmc_host *host) -+{ -+ struct mmc_request *mrq; -+ unsigned long iflags; -+ -+ spin_lock_irqsave(&host->lock, iflags); -+ -+ mrq = host->mrq; -+ if (!mrq) { -+ spin_unlock_irqrestore(&host->lock, iflags); -+ dev_err(mmc_dev(host->mmc), "no request to finalize\n"); -+ return; -+ } -+ -+ if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT) { -+ sunxi_mmc_dump_errinfo(host); -+ mrq->cmd->error = -ETIMEDOUT; -+ if (mrq->data) -+ mrq->data->error = -ETIMEDOUT; -+ if (mrq->stop) -+ mrq->stop->error = -ETIMEDOUT; -+ } else { -+ if (mrq->cmd->flags & MMC_RSP_136) { -+ mrq->cmd->resp[0] = mci_readl(host, REG_RESP3); -+ mrq->cmd->resp[1] = mci_readl(host, REG_RESP2); -+ mrq->cmd->resp[2] = mci_readl(host, REG_RESP1); -+ mrq->cmd->resp[3] = mci_readl(host, REG_RESP0); -+ } else { -+ mrq->cmd->resp[0] = mci_readl(host, REG_RESP0); -+ } -+ if (mrq->data) -+ mrq->data->bytes_xfered = -+ mrq->data->blocks * mrq->data->blksz; -+ } -+ -+ if (mrq->data) { -+ struct mmc_data *data = mrq->data; -+ u32 temp; -+ -+ mci_writel(host, REG_IDST, 0x337); -+ mci_writel(host, REG_DMAC, 0); -+ temp = mci_readl(host, REG_GCTRL); -+ mci_writel(host, REG_GCTRL, temp|SDXC_DMA_RESET); -+ temp &= ~SDXC_DMA_ENABLE_BIT; -+ mci_writel(host, REG_GCTRL, temp); -+ temp |= SDXC_FIFO_RESET; -+ mci_writel(host, REG_GCTRL, temp); -+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, -+ sunxi_mmc_get_dma_dir(data)); -+ } -+ -+ mci_writel(host, REG_RINTR, 0xffff); -+ -+ dev_dbg(mmc_dev(host->mmc), "req done, resp %08x %08x %08x %08x\n", -+ mrq->cmd->resp[0], mrq->cmd->resp[1], -+ mrq->cmd->resp[2], mrq->cmd->resp[3]); -+ -+ host->mrq = NULL; -+ host->int_sum = 0; -+ host->wait_dma = 0; -+ -+ spin_unlock_irqrestore(&host->lock, iflags); -+ -+ if (mrq->data && mrq->data->error) { -+ dev_err(mmc_dev(host->mmc), -+ "data error, sending stop command\n"); -+ sunxi_mmc_send_manual_stop(host, mrq); -+ } -+ -+ mmc_request_done(host->mmc, mrq); -+} -+ -+static irqreturn_t sunxi_mmc_irq(int irq, void *dev_id) -+{ -+ struct sunxi_mmc_host *host = dev_id; -+ u32 finalize = 0; -+ u32 sdio_int = 0; -+ u32 msk_int; -+ u32 idma_int; -+ -+ spin_lock(&host->lock); -+ -+ idma_int = mci_readl(host, REG_IDST); -+ msk_int = mci_readl(host, REG_MISTA); -+ -+ dev_dbg(mmc_dev(host->mmc), "irq: rq %p mi %08x idi %08x\n", -+ host->mrq, msk_int, idma_int); -+ -+ if (host->mrq) { -+ if (idma_int & SDXC_IDMAC_RECEIVE_INTERRUPT) -+ host->wait_dma = 0; -+ -+ host->int_sum |= msk_int; -+ -+ /* Wait for COMMAND_DONE on RESPONSE_TIMEOUT before finishing the req */ -+ if ((host->int_sum & SDXC_RESP_TIMEOUT) && -+ !(host->int_sum & SDXC_COMMAND_DONE)) -+ mci_writel(host, REG_IMASK, -+ host->sdio_imask | SDXC_COMMAND_DONE); -+ else if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT) -+ finalize = 1; /* Don't wait for dma on error */ -+ else if (host->int_sum & SDXC_INTERRUPT_DONE_BIT && !host->wait_dma) -+ finalize = 1; /* Done */ -+ -+ if (finalize) { -+ mci_writel(host, REG_IMASK, host->sdio_imask); -+ mci_writel(host, REG_IDIE, 0); -+ } -+ } -+ -+ if (msk_int & SDXC_SDIO_INTERRUPT) -+ sdio_int = 1; -+ -+ mci_writel(host, REG_RINTR, msk_int); -+ mci_writel(host, REG_IDST, idma_int); -+ -+ spin_unlock(&host->lock); -+ -+ if (finalize) -+ tasklet_schedule(&host->tasklet); -+ -+ if (sdio_int) -+ mmc_signal_sdio_irq(host->mmc); -+ -+ return IRQ_HANDLED; -+} -+ -+static void sunxi_mmc_tasklet(unsigned long data) -+{ -+ struct sunxi_mmc_host *smc_host = (struct sunxi_mmc_host *) data; -+ sunxi_mmc_finalize_request(smc_host); -+} -+ -+static void sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en) -+{ -+ unsigned long expire = jiffies + msecs_to_jiffies(2000); -+ u32 rval; -+ -+ rval = mci_readl(host, REG_CLKCR); -+ rval &= ~(SDXC_CARD_CLOCK_ON | SDXC_LOW_POWER_ON); -+ -+ if (oclk_en) -+ rval |= SDXC_CARD_CLOCK_ON; -+ -+ mci_writel(host, REG_CLKCR, rval); -+ -+ rval = SDXC_START | SDXC_UPCLK_ONLY | SDXC_WAIT_PRE_OVER; -+ if (host->voltage_switching) -+ rval |= SDXC_VOLTAGE_SWITCH; -+ mci_writel(host, REG_CMDR, rval); -+ -+ do { -+ rval = mci_readl(host, REG_CMDR); -+ } while (time_before(jiffies, expire) && (rval & SDXC_START)); -+ -+ if (rval & SDXC_START) { -+ dev_err(mmc_dev(host->mmc), "fatal err update clk timeout\n"); -+ host->ferror = 1; -+ } -+} -+ -+struct sunxi_mmc_clk_dly mmc_clk_dly[MMC_CLK_MOD_NUM] = { -+ { MMC_CLK_400K, 0, 7 }, -+ { MMC_CLK_25M, 0, 5 }, -+ { MMC_CLK_50M, 3, 5 }, -+ { MMC_CLK_50MDDR, 2, 4 }, -+ { MMC_CLK_50MDDR_8BIT, 2, 4 }, -+ { MMC_CLK_100M, 1, 4 }, -+ { MMC_CLK_200M, 1, 4 }, -+}; -+ -+static void sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *smc_host, -+ unsigned int rate) -+{ -+ u32 newrate; -+ u32 src_clk; -+ u32 oclk_dly; -+ u32 sclk_dly; -+ u32 temp; -+ struct sunxi_mmc_clk_dly *dly = NULL; -+ struct clk_hw *hw = __clk_get_hw(smc_host->clk_mod); -+ -+ newrate = clk_round_rate(smc_host->clk_mod, rate); -+ if (smc_host->clk_mod_rate == newrate) { -+ dev_dbg(mmc_dev(smc_host->mmc), "clk already %d, rounded %d\n", -+ rate, newrate); -+ return; -+ } -+ -+ dev_dbg(mmc_dev(smc_host->mmc), "setting clk to %d, rounded %d\n", -+ rate, newrate); -+ -+ /* setting clock rate */ -+ clk_disable(smc_host->clk_mod); -+ clk_set_rate(smc_host->clk_mod, newrate); -+ clk_enable(smc_host->clk_mod); -+ smc_host->clk_mod_rate = newrate = clk_get_rate(smc_host->clk_mod); -+ dev_dbg(mmc_dev(smc_host->mmc), "clk is now %d\n", newrate); -+ -+ sunxi_mmc_oclk_onoff(smc_host, 0); -+ /* clear internal divider */ -+ temp = mci_readl(smc_host, REG_CLKCR); -+ temp &= ~0xff; -+ mci_writel(smc_host, REG_CLKCR, temp); -+ -+ /* determine delays */ -+ if (rate <= 400000) { -+ dly = &mmc_clk_dly[MMC_CLK_400K]; -+ } else if (rate <= 25000000) { -+ dly = &mmc_clk_dly[MMC_CLK_25M]; -+ } else if (rate <= 50000000) { -+ if (smc_host->ddr) { -+ if (smc_host->bus_width == 8) -+ dly = &mmc_clk_dly[MMC_CLK_50MDDR_8BIT]; -+ else -+ dly = &mmc_clk_dly[MMC_CLK_50MDDR]; -+ } else { -+ dly = &mmc_clk_dly[MMC_CLK_50M]; -+ } -+ } else if (rate <= 104000000) { -+ dly = &mmc_clk_dly[MMC_CLK_100M]; -+ } else if (rate <= 208000000) { -+ dly = &mmc_clk_dly[MMC_CLK_200M]; -+ } else { -+ dly = &mmc_clk_dly[MMC_CLK_50M]; -+ } -+ -+ oclk_dly = dly->oclk_dly; -+ sclk_dly = dly->sclk_dly; -+ -+ src_clk = clk_get_rate(clk_get_parent(smc_host->clk_mod)); -+ -+ if (src_clk >= 300000000 && src_clk <= 400000000) { -+ if (oclk_dly) -+ oclk_dly--; -+ if (sclk_dly) -+ sclk_dly--; -+ } -+ -+ clk_sunxi_mmc_phase_control(hw, sclk_dly, oclk_dly); -+ sunxi_mmc_oclk_onoff(smc_host, 1); -+ -+ /* oclk_onoff sets various irq status bits, clear these */ -+ mci_writel(smc_host, REG_RINTR, -+ mci_readl(smc_host, REG_RINTR) & ~SDXC_SDIO_INTERRUPT); -+} -+ -+static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -+{ -+ struct sunxi_mmc_host *host = mmc_priv(mmc); -+ u32 temp; -+ s32 err; -+ -+ /* Set the power state */ -+ switch (ios->power_mode) { -+ case MMC_POWER_ON: -+ break; -+ -+ case MMC_POWER_UP: -+ if (!IS_ERR(host->vmmc)) { -+ mmc_regulator_set_ocr(host->mmc, host->vmmc, ios->vdd); -+ udelay(200); -+ } -+ -+ err = sunxi_mmc_init_host(mmc); -+ if (err) { -+ host->ferror = 1; -+ return; -+ } -+ enable_irq(host->irq); -+ -+ dev_dbg(mmc_dev(host->mmc), "power on!\n"); -+ host->ferror = 0; -+ break; -+ -+ case MMC_POWER_OFF: -+ dev_dbg(mmc_dev(host->mmc), "power off!\n"); -+ disable_irq(host->irq); -+ sunxi_mmc_exit_host(host); -+ if (!IS_ERR(host->vmmc)) -+ mmc_regulator_set_ocr(host->mmc, host->vmmc, 0); -+ host->ferror = 0; -+ break; -+ } -+ -+ /* set bus width */ -+ switch (ios->bus_width) { -+ case MMC_BUS_WIDTH_1: -+ mci_writel(host, REG_WIDTH, SDXC_WIDTH1); -+ host->bus_width = 1; -+ break; -+ case MMC_BUS_WIDTH_4: -+ mci_writel(host, REG_WIDTH, SDXC_WIDTH4); -+ host->bus_width = 4; -+ break; -+ case MMC_BUS_WIDTH_8: -+ mci_writel(host, REG_WIDTH, SDXC_WIDTH8); -+ host->bus_width = 8; -+ break; -+ } -+ -+ /* set ddr mode */ -+ temp = mci_readl(host, REG_GCTRL); -+ if (ios->timing == MMC_TIMING_UHS_DDR50) { -+ temp |= SDXC_DDR_MODE; -+ host->ddr = 1; -+ } else { -+ temp &= ~SDXC_DDR_MODE; -+ host->ddr = 0; -+ } -+ mci_writel(host, REG_GCTRL, temp); -+ -+ /* set up clock */ -+ if (ios->clock && ios->power_mode) { -+ dev_dbg(mmc_dev(host->mmc), "ios->clock: %d\n", ios->clock); -+ sunxi_mmc_clk_set_rate(host, ios->clock); -+ usleep_range(50000, 55000); -+ } -+} -+ -+static void sunxi_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) -+{ -+ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); -+ unsigned long flags; -+ u32 imask; -+ -+ spin_lock_irqsave(&smc_host->lock, flags); -+ -+ imask = mci_readl(smc_host, REG_IMASK); -+ if (enable) { -+ smc_host->sdio_imask = SDXC_SDIO_INTERRUPT; -+ imask |= SDXC_SDIO_INTERRUPT; -+ } else { -+ smc_host->sdio_imask = 0; -+ imask &= ~SDXC_SDIO_INTERRUPT; -+ } -+ mci_writel(smc_host, REG_IMASK, imask); -+ spin_unlock_irqrestore(&smc_host->lock, flags); -+} -+ -+static void sunxi_mmc_hw_reset(struct mmc_host *mmc) -+{ -+ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); -+ mci_writel(smc_host, REG_HWRST, 0); -+ udelay(10); -+ mci_writel(smc_host, REG_HWRST, 1); -+ udelay(300); -+} -+ -+static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) -+{ -+ struct sunxi_mmc_host *host = mmc_priv(mmc); -+ struct mmc_command *cmd = mrq->cmd; -+ struct mmc_data *data = mrq->data; -+ unsigned long iflags; -+ u32 imask = SDXC_INTERRUPT_ERROR_BIT; -+ u32 cmd_val = SDXC_START | (cmd->opcode & 0x3f); -+ u32 byte_cnt = 0; -+ int ret; -+ -+ if (!mmc_gpio_get_cd(mmc) || host->ferror) { -+ dev_dbg(mmc_dev(host->mmc), "no medium present\n"); -+ mrq->cmd->error = -ENOMEDIUM; -+ mmc_request_done(mmc, mrq); -+ return; -+ } -+ -+ if (data) { -+ byte_cnt = data->blksz * data->blocks; -+ mci_writel(host, REG_BLKSZ, data->blksz); -+ mci_writel(host, REG_BCNTR, byte_cnt); -+ ret = sunxi_mmc_prepare_dma(host, data); -+ if (ret < 0) { -+ dev_err(mmc_dev(host->mmc), "prepare DMA failed\n"); -+ cmd->error = ret; -+ cmd->data->error = ret; -+ mmc_request_done(host->mmc, mrq); -+ return; -+ } -+ } -+ -+ if (cmd->opcode == MMC_GO_IDLE_STATE) { -+ cmd_val |= SDXC_SEND_INIT_SEQUENCE; -+ imask |= SDXC_COMMAND_DONE; -+ } -+ -+ if (cmd->opcode == SD_SWITCH_VOLTAGE) { -+ cmd_val |= SDXC_VOLTAGE_SWITCH; -+ imask |= SDXC_VOLTAGE_CHANGE_DONE; -+ host->voltage_switching = 1; -+ sunxi_mmc_oclk_onoff(host, 1); -+ } -+ -+ if (cmd->flags & MMC_RSP_PRESENT) { -+ cmd_val |= SDXC_RESP_EXPIRE; -+ if (cmd->flags & MMC_RSP_136) -+ cmd_val |= SDXC_LONG_RESPONSE; -+ if (cmd->flags & MMC_RSP_CRC) -+ cmd_val |= SDXC_CHECK_RESPONSE_CRC; -+ -+ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC) { -+ cmd_val |= SDXC_DATA_EXPIRE | SDXC_WAIT_PRE_OVER; -+ if (cmd->data->flags & MMC_DATA_STREAM) { -+ imask |= SDXC_AUTO_COMMAND_DONE; -+ cmd_val |= SDXC_SEQUENCE_MODE | SDXC_SEND_AUTO_STOP; -+ } -+ if (cmd->data->stop) { -+ imask |= SDXC_AUTO_COMMAND_DONE; -+ cmd_val |= SDXC_SEND_AUTO_STOP; -+ } else -+ imask |= SDXC_DATA_OVER; -+ -+ if (cmd->data->flags & MMC_DATA_WRITE) -+ cmd_val |= SDXC_WRITE; -+ else -+ host->wait_dma = 1; -+ } else -+ imask |= SDXC_COMMAND_DONE; -+ } else -+ imask |= SDXC_COMMAND_DONE; -+ -+ dev_dbg(mmc_dev(host->mmc), "cmd %d(%08x) arg %x ie 0x%08x len %d\n", -+ cmd_val & 0x3f, cmd_val, cmd->arg, imask, -+ mrq->data ? mrq->data->blksz * mrq->data->blocks : 0); -+ -+ spin_lock_irqsave(&host->lock, iflags); -+ host->mrq = mrq; -+ mci_writel(host, REG_IMASK, host->sdio_imask | imask); -+ spin_unlock_irqrestore(&host->lock, iflags); -+ -+ mci_writel(host, REG_CARG, cmd->arg); -+ mci_writel(host, REG_CMDR, cmd_val); -+} -+ -+static const struct of_device_id sunxi_mmc_of_match[] = { -+ { .compatible = "allwinner,sun4i-a10-mmc", }, -+ { .compatible = "allwinner,sun5i-a13-mmc", }, -+ { /* sentinel */ } -+}; -+MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); -+ -+static struct mmc_host_ops sunxi_mmc_ops = { -+ .request = sunxi_mmc_request, -+ .set_ios = sunxi_mmc_set_ios, -+ .get_ro = mmc_gpio_get_ro, -+ .get_cd = mmc_gpio_get_cd, -+ .enable_sdio_irq = sunxi_mmc_enable_sdio_irq, -+ .hw_reset = sunxi_mmc_hw_reset, -+}; -+ -+static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, -+ struct platform_device *pdev) -+{ -+ struct device_node *np = pdev->dev.of_node; -+ int ret; -+ -+ if (of_device_is_compatible(np, "allwinner,sun4i-a10-mmc")) -+ host->idma_des_size_bits = 13; -+ else -+ host->idma_des_size_bits = 16; -+ -+ host->vmmc = devm_regulator_get_optional(&pdev->dev, "vmmc"); -+ if (IS_ERR(host->vmmc) && PTR_ERR(host->vmmc) == -EPROBE_DEFER) -+ return -EPROBE_DEFER; -+ -+ host->reg_base = devm_ioremap_resource(&pdev->dev, -+ platform_get_resource(pdev, IORESOURCE_MEM, 0)); -+ if (IS_ERR(host->reg_base)) -+ return PTR_ERR(host->reg_base); -+ -+ host->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); -+ if (IS_ERR(host->clk_ahb)) { -+ dev_err(&pdev->dev, "Could not get ahb clock\n"); -+ return PTR_ERR(host->clk_ahb); -+ } -+ -+ host->clk_mod = devm_clk_get(&pdev->dev, "mod"); -+ if (IS_ERR(host->clk_mod)) { -+ dev_err(&pdev->dev, "Could not get mod clock\n"); -+ return PTR_ERR(host->clk_mod); -+ } -+ -+ /* Make sure the controller is in a sane state before enabling irqs */ -+ ret = sunxi_mmc_init_host(host->mmc); -+ if (ret) -+ return ret; -+ -+ host->irq = platform_get_irq(pdev, 0); -+ ret = devm_request_irq(&pdev->dev, host->irq, sunxi_mmc_irq, 0, -+ "sunxi-mmc", host); -+ if (ret == 0) -+ disable_irq(host->irq); -+ -+ /* And put it back in reset */ -+ sunxi_mmc_exit_host(host); -+ -+ return ret; -+} -+ -+static int sunxi_mmc_probe(struct platform_device *pdev) -+{ -+ struct sunxi_mmc_host *host; -+ struct mmc_host *mmc; -+ int ret; -+ -+ mmc = mmc_alloc_host(sizeof(struct sunxi_mmc_host), &pdev->dev); -+ if (!mmc) { -+ dev_err(&pdev->dev, "mmc alloc host failed\n"); -+ return -ENOMEM; -+ } -+ -+ host = mmc_priv(mmc); -+ host->mmc = mmc; -+ spin_lock_init(&host->lock); -+ tasklet_init(&host->tasklet, sunxi_mmc_tasklet, (unsigned long)host); -+ -+ ret = sunxi_mmc_resource_request(host, pdev); -+ if (ret) -+ goto error_free_host; -+ -+ host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, -+ &host->sg_dma, GFP_KERNEL); -+ if (!host->sg_cpu) { -+ dev_err(&pdev->dev, "Failed to allocate DMA descriptor mem\n"); -+ ret = -ENOMEM; -+ goto error_free_host; -+ } -+ -+ mmc->ops = &sunxi_mmc_ops; -+ mmc->max_blk_count = 8192; -+ mmc->max_blk_size = 4096; -+ mmc->max_segs = PAGE_SIZE / sizeof(struct sunxi_idma_des); -+ mmc->max_seg_size = (1 << host->idma_des_size_bits); -+ mmc->max_req_size = mmc->max_seg_size * mmc->max_segs; -+ /* 400kHz ~ 50MHz */ -+ mmc->f_min = 400000; -+ mmc->f_max = 50000000; -+ /* available voltages */ -+ if (!IS_ERR(host->vmmc)) -+ mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vmmc); -+ else -+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; -+ -+ mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | -+ MMC_CAP_SDIO_IRQ; -+ mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; -+ -+ ret = mmc_of_parse(mmc); -+ if (ret) -+ goto error_free_dma; -+ -+ ret = mmc_add_host(mmc); -+ if (ret) -+ goto error_free_dma; -+ -+ dev_info(&pdev->dev, "base:0x%p irq:%u\n", host->reg_base, host->irq); -+ platform_set_drvdata(pdev, mmc); -+ return 0; -+ -+error_free_dma: -+ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); -+error_free_host: -+ mmc_free_host(mmc); -+ return ret; -+} -+ -+static int sunxi_mmc_remove(struct platform_device *pdev) -+{ -+ struct mmc_host *mmc = platform_get_drvdata(pdev); -+ struct sunxi_mmc_host *host = mmc_priv(mmc); -+ -+ mmc_remove_host(mmc); -+ sunxi_mmc_exit_host(host); -+ tasklet_disable(&host->tasklet); -+ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); -+ mmc_free_host(mmc); -+ -+ return 0; -+} -+ -+static struct platform_driver sunxi_mmc_driver = { -+ .driver = { -+ .name = "sunxi-mmc", -+ .owner = THIS_MODULE, -+ .of_match_table = of_match_ptr(sunxi_mmc_of_match), -+ }, -+ .probe = sunxi_mmc_probe, -+ .remove = sunxi_mmc_remove, -+}; -+module_platform_driver(sunxi_mmc_driver); -+ -+MODULE_DESCRIPTION("Allwinner's SD/MMC Card Controller Driver"); -+MODULE_LICENSE("GPL v2"); -+MODULE_AUTHOR("David Lanzendörfer <david.lanzendoerfer@o2s.ch>"); -+MODULE_ALIAS("platform:sunxi-mmc"); ---- /dev/null -+++ b/drivers/mmc/host/sunxi-mmc.h -@@ -0,0 +1,238 @@ -+/* -+ * Driver for sunxi SD/MMC host controllers -+ * (C) Copyright 2007-2011 Reuuimlla Technology Co., Ltd. -+ * (C) Copyright 2007-2011 Aaron Maoye <leafy.myeh@reuuimllatech.com> -+ * (C) Copyright 2013-2014 O2S GmbH <www.o2s.ch> -+ * (C) Copyright 2013-2014 David Lanzendörfer <david.lanzendoerfer@o2s.ch> -+ * (C) Copyright 2013-2014 Hans de Goede <hdegoede@redhat.com> -+ * -+ * 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. -+ */ -+ -+#ifndef __SUNXI_MMC_H__ -+#define __SUNXI_MMC_H__ -+ -+/* register offset definitions */ -+#define SDXC_REG_GCTRL (0x00) /* SMC Global Control Register */ -+#define SDXC_REG_CLKCR (0x04) /* SMC Clock Control Register */ -+#define SDXC_REG_TMOUT (0x08) /* SMC Time Out Register */ -+#define SDXC_REG_WIDTH (0x0C) /* SMC Bus Width Register */ -+#define SDXC_REG_BLKSZ (0x10) /* SMC Block Size Register */ -+#define SDXC_REG_BCNTR (0x14) /* SMC Byte Count Register */ -+#define SDXC_REG_CMDR (0x18) /* SMC Command Register */ -+#define SDXC_REG_CARG (0x1C) /* SMC Argument Register */ -+#define SDXC_REG_RESP0 (0x20) /* SMC Response Register 0 */ -+#define SDXC_REG_RESP1 (0x24) /* SMC Response Register 1 */ -+#define SDXC_REG_RESP2 (0x28) /* SMC Response Register 2 */ -+#define SDXC_REG_RESP3 (0x2C) /* SMC Response Register 3 */ -+#define SDXC_REG_IMASK (0x30) /* SMC Interrupt Mask Register */ -+#define SDXC_REG_MISTA (0x34) /* SMC Masked Interrupt Status Register */ -+#define SDXC_REG_RINTR (0x38) /* SMC Raw Interrupt Status Register */ -+#define SDXC_REG_STAS (0x3C) /* SMC Status Register */ -+#define SDXC_REG_FTRGL (0x40) /* SMC FIFO Threshold Watermark Registe */ -+#define SDXC_REG_FUNS (0x44) /* SMC Function Select Register */ -+#define SDXC_REG_CBCR (0x48) /* SMC CIU Byte Count Register */ -+#define SDXC_REG_BBCR (0x4C) /* SMC BIU Byte Count Register */ -+#define SDXC_REG_DBGC (0x50) /* SMC Debug Enable Register */ -+#define SDXC_REG_HWRST (0x78) /* SMC Card Hardware Reset for Register */ -+#define SDXC_REG_DMAC (0x80) /* SMC IDMAC Control Register */ -+#define SDXC_REG_DLBA (0x84) /* SMC IDMAC Descriptor List Base Addre */ -+#define SDXC_REG_IDST (0x88) /* SMC IDMAC Status Register */ -+#define SDXC_REG_IDIE (0x8C) /* SMC IDMAC Interrupt Enable Register */ -+#define SDXC_REG_CHDA (0x90) -+#define SDXC_REG_CBDA (0x94) -+ -+#define mci_readl(host, reg) \ -+ readl((host)->reg_base + SDXC_##reg) -+#define mci_writel(host, reg, value) \ -+ writel((value), (host)->reg_base + SDXC_##reg) -+ -+/* global control register bits */ -+#define SDXC_SOFT_RESET BIT(0) -+#define SDXC_FIFO_RESET BIT(1) -+#define SDXC_DMA_RESET BIT(2) -+#define SDXC_HARDWARE_RESET (SDXC_SOFT_RESET|SDXC_FIFO_RESET|SDXC_DMA_RESET) -+#define SDXC_INTERRUPT_ENABLE_BIT BIT(4) -+#define SDXC_DMA_ENABLE_BIT BIT(5) -+#define SDXC_DEBOUNCE_ENABLE_BIT BIT(8) -+#define SDXC_POSEDGE_LATCH_DATA BIT(9) -+#define SDXC_DDR_MODE BIT(10) -+#define SDXC_MEMORY_ACCESS_DONE BIT(29) -+#define SDXC_ACCESS_DONE_DIRECT BIT(30) -+#define SDXC_ACCESS_BY_AHB BIT(31) -+#define SDXC_ACCESS_BY_DMA (0U << 31) -+/* clock control bits */ -+#define SDXC_CARD_CLOCK_ON BIT(16) -+#define SDXC_LOW_POWER_ON BIT(17) -+/* bus width */ -+#define SDXC_WIDTH1 (0) -+#define SDXC_WIDTH4 (1) -+#define SDXC_WIDTH8 (2) -+/* smc command bits */ -+#define SDXC_RESP_EXPIRE BIT(6) -+#define SDXC_LONG_RESPONSE BIT(7) -+#define SDXC_CHECK_RESPONSE_CRC BIT(8) -+#define SDXC_DATA_EXPIRE BIT(9) -+#define SDXC_WRITE BIT(10) -+#define SDXC_SEQUENCE_MODE BIT(11) -+#define SDXC_SEND_AUTO_STOP BIT(12) -+#define SDXC_WAIT_PRE_OVER BIT(13) -+#define SDXC_STOP_ABORT_CMD BIT(14) -+#define SDXC_SEND_INIT_SEQUENCE BIT(15) -+#define SDXC_UPCLK_ONLY BIT(21) -+#define SDXC_READ_CEATA_DEV BIT(22) -+#define SDXC_CCS_EXPIRE BIT(23) -+#define SDXC_ENABLE_BIT_BOOT BIT(24) -+#define SDXC_ALT_BOOT_OPTIONS BIT(25) -+#define SDXC_BOOT_ACK_EXPIRE BIT(26) -+#define SDXC_BOOT_ABORT BIT(27) -+#define SDXC_VOLTAGE_SWITCH BIT(28) -+#define SDXC_USE_HOLD_REGISTER BIT(29) -+#define SDXC_START BIT(31) -+/* interrupt bits */ -+#define SDXC_RESP_ERROR BIT(1) -+#define SDXC_COMMAND_DONE BIT(2) -+#define SDXC_DATA_OVER BIT(3) -+#define SDXC_TX_DATA_REQUEST BIT(4) -+#define SDXC_RX_DATA_REQUEST BIT(5) -+#define SDXC_RESP_CRC_ERROR BIT(6) -+#define SDXC_DATA_CRC_ERROR BIT(7) -+#define SDXC_RESP_TIMEOUT BIT(8) -+#define SDXC_DATA_TIMEOUT BIT(9) -+#define SDXC_VOLTAGE_CHANGE_DONE BIT(10) -+#define SDXC_FIFO_RUN_ERROR BIT(11) -+#define SDXC_HARD_WARE_LOCKED BIT(12) -+#define SDXC_START_BIT_ERROR BIT(13) -+#define SDXC_AUTO_COMMAND_DONE BIT(14) -+#define SDXC_END_BIT_ERROR BIT(15) -+#define SDXC_SDIO_INTERRUPT BIT(16) -+#define SDXC_CARD_INSERT BIT(30) -+#define SDXC_CARD_REMOVE BIT(31) -+#define SDXC_INTERRUPT_ERROR_BIT (SDXC_RESP_ERROR | SDXC_RESP_CRC_ERROR | \ -+ SDXC_DATA_CRC_ERROR | SDXC_RESP_TIMEOUT | \ -+ SDXC_DATA_TIMEOUT | SDXC_FIFO_RUN_ERROR | \ -+ SDXC_HARD_WARE_LOCKED | SDXC_START_BIT_ERROR | \ -+ SDXC_END_BIT_ERROR) /* 0xbbc2 */ -+#define SDXC_INTERRUPT_DONE_BIT (SDXC_AUTO_COMMAND_DONE | SDXC_DATA_OVER | \ -+ SDXC_COMMAND_DONE | SDXC_VOLTAGE_CHANGE_DONE) -+/* status */ -+#define SDXC_RXWL_FLAG BIT(0) -+#define SDXC_TXWL_FLAG BIT(1) -+#define SDXC_FIFO_EMPTY BIT(2) -+#define SDXC_FIFO_FULL BIT(3) -+#define SDXC_CARD_PRESENT BIT(8) -+#define SDXC_CARD_DATA_BUSY BIT(9) -+#define SDXC_DATA_FSM_BUSY BIT(10) -+#define SDXC_DMA_REQUEST BIT(31) -+#define SDXC_FIFO_SIZE (16) -+/* Function select */ -+#define SDXC_CEATA_ON (0xceaaU << 16) -+#define SDXC_SEND_IRQ_RESPONSE BIT(0) -+#define SDXC_SDIO_READ_WAIT BIT(1) -+#define SDXC_ABORT_READ_DATA BIT(2) -+#define SDXC_SEND_CCSD BIT(8) -+#define SDXC_SEND_AUTO_STOPCCSD BIT(9) -+#define SDXC_CEATA_DEV_INTERRUPT_ENABLE_BIT BIT(10) -+/* IDMA controller bus mod bit field */ -+#define SDXC_IDMAC_SOFT_RESET BIT(0) -+#define SDXC_IDMAC_FIX_BURST BIT(1) -+#define SDXC_IDMAC_IDMA_ON BIT(7) -+#define SDXC_IDMAC_REFETCH_DES BIT(31) -+/* IDMA status bit field */ -+#define SDXC_IDMAC_TRANSMIT_INTERRUPT BIT(0) -+#define SDXC_IDMAC_RECEIVE_INTERRUPT BIT(1) -+#define SDXC_IDMAC_FATAL_BUS_ERROR BIT(2) -+#define SDXC_IDMAC_DESTINATION_INVALID BIT(4) -+#define SDXC_IDMAC_CARD_ERROR_SUM BIT(5) -+#define SDXC_IDMAC_NORMAL_INTERRUPT_SUM BIT(8) -+#define SDXC_IDMAC_ABNORMAL_INTERRUPT_SUM BIT(9) -+#define SDXC_IDMAC_HOST_ABORT_INTERRUPT_TX BIT(10) -+#define SDXC_IDMAC_HOST_ABORT_INTERRUPT_RX BIT(10) -+#define SDXC_IDMAC_IDLE (0U << 13) -+#define SDXC_IDMAC_SUSPEND (1U << 13) -+#define SDXC_IDMAC_DESC_READ (2U << 13) -+#define SDXC_IDMAC_DESC_CHECK (3U << 13) -+#define SDXC_IDMAC_READ_REQUEST_WAIT (4U << 13) -+#define SDXC_IDMAC_WRITE_REQUEST_WAIT (5U << 13) -+#define SDXC_IDMAC_READ (6U << 13) -+#define SDXC_IDMAC_WRITE (7U << 13) -+#define SDXC_IDMAC_DESC_CLOSE (8U << 13) -+ -+/* -+* If the idma-des-size-bits of property is ie 13, bufsize bits are: -+* Bits 0-12: buf1 size -+* Bits 13-25: buf2 size -+* Bits 26-31: not used -+* Since we only ever set buf1 size, we can simply store it directly. -+*/ -+#define SDXC_IDMAC_DES0_DIC BIT(1) /* disable interrupt on completion */ -+#define SDXC_IDMAC_DES0_LD BIT(2) /* last descriptor */ -+#define SDXC_IDMAC_DES0_FD BIT(3) /* first descriptor */ -+#define SDXC_IDMAC_DES0_CH BIT(4) /* chain mode */ -+#define SDXC_IDMAC_DES0_ER BIT(5) /* end of ring */ -+#define SDXC_IDMAC_DES0_CES BIT(30) /* card error summary */ -+#define SDXC_IDMAC_DES0_OWN BIT(31) /* 1-idma owns it, 0-host owns it */ -+ -+struct sunxi_idma_des { -+ u32 config; -+ u32 buf_size; -+ u32 buf_addr_ptr1; -+ u32 buf_addr_ptr2; -+}; -+ -+struct sunxi_mmc_host { -+ struct mmc_host *mmc; -+ struct regulator *vmmc; -+ -+ /* IO mapping base */ -+ void __iomem *reg_base; -+ -+ spinlock_t lock; -+ struct tasklet_struct tasklet; -+ -+ /* clock management */ -+ struct clk *clk_ahb; -+ struct clk *clk_mod; -+ -+ /* ios information */ -+ u32 clk_mod_rate; -+ u32 bus_width; -+ u32 idma_des_size_bits; -+ u32 ddr; -+ u32 voltage_switching; -+ -+ /* irq */ -+ int irq; -+ u32 int_sum; -+ u32 sdio_imask; -+ -+ /* flags */ -+ u32 power_on:1; -+ u32 wait_dma:1; -+ -+ dma_addr_t sg_dma; -+ void *sg_cpu; -+ -+ struct mmc_request *mrq; -+ u32 ferror; -+}; -+ -+#define MMC_CLK_400K 0 -+#define MMC_CLK_25M 1 -+#define MMC_CLK_50M 2 -+#define MMC_CLK_50MDDR 3 -+#define MMC_CLK_50MDDR_8BIT 4 -+#define MMC_CLK_100M 5 -+#define MMC_CLK_200M 6 -+#define MMC_CLK_MOD_NUM 7 -+ -+struct sunxi_mmc_clk_dly { -+ u32 mode; -+ u32 oclk_dly; -+ u32 sclk_dly; -+}; -+ -+#endif |