mmc: uniphier: Split out SoC specific bits from the driver
Factor out common code from the uniphier SD driver, change the prefix
of the functions from uniphier_sd_ to matsu_sd_ and create separate
renesas-sdhi.c driver. Thus far, all the code is still compiled when
CONFIG_UNIPHIER_MMC is selected and there is no functional change.
This patch is a preparation for further split of the SoC specific
parts of the Matsushita SD driver, used both on Uniphier and R-Car.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/mmc/uniphier-sd.c b/drivers/mmc/uniphier-sd.c
index 525b170..72f0d46 100644
--- a/drivers/mmc/uniphier-sd.c
+++ b/drivers/mmc/uniphier-sd.c
@@ -17,846 +17,15 @@
#include <power/regulator.h>
#include <asm/unaligned.h>
-DECLARE_GLOBAL_DATA_PTR;
-
-#define UNIPHIER_SD_CMD 0x000 /* command */
-#define UNIPHIER_SD_CMD_NOSTOP BIT(14) /* No automatic CMD12 issue */
-#define UNIPHIER_SD_CMD_MULTI BIT(13) /* multiple block transfer */
-#define UNIPHIER_SD_CMD_RD BIT(12) /* 1: read, 0: write */
-#define UNIPHIER_SD_CMD_DATA BIT(11) /* data transfer */
-#define UNIPHIER_SD_CMD_APP BIT(6) /* ACMD preceded by CMD55 */
-#define UNIPHIER_SD_CMD_NORMAL (0 << 8)/* auto-detect of resp-type */
-#define UNIPHIER_SD_CMD_RSP_NONE (3 << 8)/* response: none */
-#define UNIPHIER_SD_CMD_RSP_R1 (4 << 8)/* response: R1, R5, R6, R7 */
-#define UNIPHIER_SD_CMD_RSP_R1B (5 << 8)/* response: R1b, R5b */
-#define UNIPHIER_SD_CMD_RSP_R2 (6 << 8)/* response: R2 */
-#define UNIPHIER_SD_CMD_RSP_R3 (7 << 8)/* response: R3, R4 */
-#define UNIPHIER_SD_ARG 0x008 /* command argument */
-#define UNIPHIER_SD_STOP 0x010 /* stop action control */
-#define UNIPHIER_SD_STOP_SEC BIT(8) /* use sector count */
-#define UNIPHIER_SD_STOP_STP BIT(0) /* issue CMD12 */
-#define UNIPHIER_SD_SECCNT 0x014 /* sector counter */
-#define UNIPHIER_SD_RSP10 0x018 /* response[39:8] */
-#define UNIPHIER_SD_RSP32 0x020 /* response[71:40] */
-#define UNIPHIER_SD_RSP54 0x028 /* response[103:72] */
-#define UNIPHIER_SD_RSP76 0x030 /* response[127:104] */
-#define UNIPHIER_SD_INFO1 0x038 /* IRQ status 1 */
-#define UNIPHIER_SD_INFO1_CD BIT(5) /* state of card detect */
-#define UNIPHIER_SD_INFO1_INSERT BIT(4) /* card inserted */
-#define UNIPHIER_SD_INFO1_REMOVE BIT(3) /* card removed */
-#define UNIPHIER_SD_INFO1_CMP BIT(2) /* data complete */
-#define UNIPHIER_SD_INFO1_RSP BIT(0) /* response complete */
-#define UNIPHIER_SD_INFO2 0x03c /* IRQ status 2 */
-#define UNIPHIER_SD_INFO2_ERR_ILA BIT(15) /* illegal access err */
-#define UNIPHIER_SD_INFO2_CBSY BIT(14) /* command busy */
-#define UNIPHIER_SD_INFO2_BWE BIT(9) /* write buffer ready */
-#define UNIPHIER_SD_INFO2_BRE BIT(8) /* read buffer ready */
-#define UNIPHIER_SD_INFO2_DAT0 BIT(7) /* SDDAT0 */
-#define UNIPHIER_SD_INFO2_ERR_RTO BIT(6) /* response time out */
-#define UNIPHIER_SD_INFO2_ERR_ILR BIT(5) /* illegal read err */
-#define UNIPHIER_SD_INFO2_ERR_ILW BIT(4) /* illegal write err */
-#define UNIPHIER_SD_INFO2_ERR_TO BIT(3) /* time out error */
-#define UNIPHIER_SD_INFO2_ERR_END BIT(2) /* END bit error */
-#define UNIPHIER_SD_INFO2_ERR_CRC BIT(1) /* CRC error */
-#define UNIPHIER_SD_INFO2_ERR_IDX BIT(0) /* cmd index error */
-#define UNIPHIER_SD_INFO1_MASK 0x040
-#define UNIPHIER_SD_INFO2_MASK 0x044
-#define UNIPHIER_SD_CLKCTL 0x048 /* clock divisor */
-#define UNIPHIER_SD_CLKCTL_DIV_MASK 0x104ff
-#define UNIPHIER_SD_CLKCTL_DIV1024 BIT(16) /* SDCLK = CLK / 1024 */
-#define UNIPHIER_SD_CLKCTL_DIV512 BIT(7) /* SDCLK = CLK / 512 */
-#define UNIPHIER_SD_CLKCTL_DIV256 BIT(6) /* SDCLK = CLK / 256 */
-#define UNIPHIER_SD_CLKCTL_DIV128 BIT(5) /* SDCLK = CLK / 128 */
-#define UNIPHIER_SD_CLKCTL_DIV64 BIT(4) /* SDCLK = CLK / 64 */
-#define UNIPHIER_SD_CLKCTL_DIV32 BIT(3) /* SDCLK = CLK / 32 */
-#define UNIPHIER_SD_CLKCTL_DIV16 BIT(2) /* SDCLK = CLK / 16 */
-#define UNIPHIER_SD_CLKCTL_DIV8 BIT(1) /* SDCLK = CLK / 8 */
-#define UNIPHIER_SD_CLKCTL_DIV4 BIT(0) /* SDCLK = CLK / 4 */
-#define UNIPHIER_SD_CLKCTL_DIV2 0 /* SDCLK = CLK / 2 */
-#define UNIPHIER_SD_CLKCTL_DIV1 BIT(10) /* SDCLK = CLK */
-#define UNIPHIER_SD_CLKCTL_OFFEN BIT(9) /* stop SDCLK when unused */
-#define UNIPHIER_SD_CLKCTL_SCLKEN BIT(8) /* SDCLK output enable */
-#define UNIPHIER_SD_SIZE 0x04c /* block size */
-#define UNIPHIER_SD_OPTION 0x050
-#define UNIPHIER_SD_OPTION_WIDTH_MASK (5 << 13)
-#define UNIPHIER_SD_OPTION_WIDTH_1 (4 << 13)
-#define UNIPHIER_SD_OPTION_WIDTH_4 (0 << 13)
-#define UNIPHIER_SD_OPTION_WIDTH_8 (1 << 13)
-#define UNIPHIER_SD_BUF 0x060 /* read/write buffer */
-#define UNIPHIER_SD_EXTMODE 0x1b0
-#define UNIPHIER_SD_EXTMODE_DMA_EN BIT(1) /* transfer 1: DMA, 0: pio */
-#define UNIPHIER_SD_SOFT_RST 0x1c0
-#define UNIPHIER_SD_SOFT_RST_RSTX BIT(0) /* reset deassert */
-#define UNIPHIER_SD_VERSION 0x1c4 /* version register */
-#define UNIPHIER_SD_VERSION_IP 0xff /* IP version */
-#define UNIPHIER_SD_HOST_MODE 0x1c8
-#define UNIPHIER_SD_IF_MODE 0x1cc
-#define UNIPHIER_SD_IF_MODE_DDR BIT(0) /* DDR mode */
-#define UNIPHIER_SD_VOLT 0x1e4 /* voltage switch */
-#define UNIPHIER_SD_VOLT_MASK (3 << 0)
-#define UNIPHIER_SD_VOLT_OFF (0 << 0)
-#define UNIPHIER_SD_VOLT_330 (1 << 0)/* 3.3V signal */
-#define UNIPHIER_SD_VOLT_180 (2 << 0)/* 1.8V signal */
-#define UNIPHIER_SD_DMA_MODE 0x410
-#define UNIPHIER_SD_DMA_MODE_DIR_RD BIT(16) /* 1: from device, 0: to dev */
-#define UNIPHIER_SD_DMA_MODE_ADDR_INC BIT(0) /* 1: address inc, 0: fixed */
-#define UNIPHIER_SD_DMA_CTL 0x414
-#define UNIPHIER_SD_DMA_CTL_START BIT(0) /* start DMA (auto cleared) */
-#define UNIPHIER_SD_DMA_RST 0x418
-#define UNIPHIER_SD_DMA_RST_RD BIT(9)
-#define UNIPHIER_SD_DMA_RST_WR BIT(8)
-#define UNIPHIER_SD_DMA_INFO1 0x420
-#define UNIPHIER_SD_DMA_INFO1_END_RD2 BIT(20) /* DMA from device is complete*/
-#define UNIPHIER_SD_DMA_INFO1_END_RD BIT(17) /* Don't use! Hardware bug */
-#define UNIPHIER_SD_DMA_INFO1_END_WR BIT(16) /* DMA to device is complete */
-#define UNIPHIER_SD_DMA_INFO1_MASK 0x424
-#define UNIPHIER_SD_DMA_INFO2 0x428
-#define UNIPHIER_SD_DMA_INFO2_ERR_RD BIT(17)
-#define UNIPHIER_SD_DMA_INFO2_ERR_WR BIT(16)
-#define UNIPHIER_SD_DMA_INFO2_MASK 0x42c
-#define UNIPHIER_SD_DMA_ADDR_L 0x440
-#define UNIPHIER_SD_DMA_ADDR_H 0x444
-
-/* alignment required by the DMA engine of this controller */
-#define UNIPHIER_SD_DMA_MINALIGN 0x10
-
-struct uniphier_sd_plat {
- struct mmc_config cfg;
- struct mmc mmc;
-};
-
-struct uniphier_sd_priv {
- void __iomem *regbase;
- unsigned long mclk;
- unsigned int version;
- u32 caps;
-#define UNIPHIER_SD_CAP_NONREMOVABLE BIT(0) /* Nonremovable e.g. eMMC */
-#define UNIPHIER_SD_CAP_DMA_INTERNAL BIT(1) /* have internal DMA engine */
-#define UNIPHIER_SD_CAP_DIV1024 BIT(2) /* divisor 1024 is available */
-#define UNIPHIER_SD_CAP_64BIT BIT(3) /* Controller is 64bit */
-};
-
-static u64 uniphier_sd_readq(struct uniphier_sd_priv *priv, unsigned int reg)
-{
- if (priv->caps & UNIPHIER_SD_CAP_64BIT)
- return readq(priv->regbase + (reg << 1));
- else
- return readq(priv->regbase + reg);
-}
-
-static void uniphier_sd_writeq(struct uniphier_sd_priv *priv,
- u64 val, unsigned int reg)
-{
- if (priv->caps & UNIPHIER_SD_CAP_64BIT)
- writeq(val, priv->regbase + (reg << 1));
- else
- writeq(val, priv->regbase + reg);
-}
-
-static u32 uniphier_sd_readl(struct uniphier_sd_priv *priv, unsigned int reg)
-{
- if (priv->caps & UNIPHIER_SD_CAP_64BIT)
- return readl(priv->regbase + (reg << 1));
- else
- return readl(priv->regbase + reg);
-}
-
-static void uniphier_sd_writel(struct uniphier_sd_priv *priv,
- u32 val, unsigned int reg)
-{
- if (priv->caps & UNIPHIER_SD_CAP_64BIT)
- writel(val, priv->regbase + (reg << 1));
- else
- writel(val, priv->regbase + reg);
-}
-
-static dma_addr_t __dma_map_single(void *ptr, size_t size,
- enum dma_data_direction dir)
-{
- unsigned long addr = (unsigned long)ptr;
-
- if (dir == DMA_FROM_DEVICE)
- invalidate_dcache_range(addr, addr + size);
- else
- flush_dcache_range(addr, addr + size);
-
- return addr;
-}
-
-static void __dma_unmap_single(dma_addr_t addr, size_t size,
- enum dma_data_direction dir)
-{
- if (dir != DMA_TO_DEVICE)
- invalidate_dcache_range(addr, addr + size);
-}
-
-static int uniphier_sd_check_error(struct udevice *dev)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- u32 info2 = uniphier_sd_readl(priv, UNIPHIER_SD_INFO2);
-
- if (info2 & UNIPHIER_SD_INFO2_ERR_RTO) {
- /*
- * TIMEOUT must be returned for unsupported command. Do not
- * display error log since this might be a part of sequence to
- * distinguish between SD and MMC.
- */
- return -ETIMEDOUT;
- }
-
- if (info2 & UNIPHIER_SD_INFO2_ERR_TO) {
- dev_err(dev, "timeout error\n");
- return -ETIMEDOUT;
- }
-
- if (info2 & (UNIPHIER_SD_INFO2_ERR_END | UNIPHIER_SD_INFO2_ERR_CRC |
- UNIPHIER_SD_INFO2_ERR_IDX)) {
- dev_err(dev, "communication out of sync\n");
- return -EILSEQ;
- }
-
- if (info2 & (UNIPHIER_SD_INFO2_ERR_ILA | UNIPHIER_SD_INFO2_ERR_ILR |
- UNIPHIER_SD_INFO2_ERR_ILW)) {
- dev_err(dev, "illegal access\n");
- return -EIO;
- }
-
- return 0;
-}
-
-static int uniphier_sd_wait_for_irq(struct udevice *dev, unsigned int reg,
- u32 flag)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- long wait = 1000000;
- int ret;
-
- while (!(uniphier_sd_readl(priv, reg) & flag)) {
- if (wait-- < 0) {
- dev_err(dev, "timeout\n");
- return -ETIMEDOUT;
- }
-
- ret = uniphier_sd_check_error(dev);
- if (ret)
- return ret;
-
- udelay(1);
- }
-
- return 0;
-}
-
-static int uniphier_sd_pio_read_one_block(struct udevice *dev, char *pbuf,
- uint blocksize)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- int i, ret;
-
- /* wait until the buffer is filled with data */
- ret = uniphier_sd_wait_for_irq(dev, UNIPHIER_SD_INFO2,
- UNIPHIER_SD_INFO2_BRE);
- if (ret)
- return ret;
-
- /*
- * Clear the status flag _before_ read the buffer out because
- * UNIPHIER_SD_INFO2_BRE is edge-triggered, not level-triggered.
- */
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO2);
-
- if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
- u64 *buf = (u64 *)pbuf;
- if (likely(IS_ALIGNED((uintptr_t)buf, 8))) {
- for (i = 0; i < blocksize / 8; i++) {
- *buf++ = uniphier_sd_readq(priv,
- UNIPHIER_SD_BUF);
- }
- } else {
- for (i = 0; i < blocksize / 8; i++) {
- u64 data;
- data = uniphier_sd_readq(priv,
- UNIPHIER_SD_BUF);
- put_unaligned(data, buf++);
- }
- }
- } else {
- u32 *buf = (u32 *)pbuf;
- if (likely(IS_ALIGNED((uintptr_t)buf, 4))) {
- for (i = 0; i < blocksize / 4; i++) {
- *buf++ = uniphier_sd_readl(priv,
- UNIPHIER_SD_BUF);
- }
- } else {
- for (i = 0; i < blocksize / 4; i++) {
- u32 data;
- data = uniphier_sd_readl(priv, UNIPHIER_SD_BUF);
- put_unaligned(data, buf++);
- }
- }
- }
-
- return 0;
-}
-
-static int uniphier_sd_pio_write_one_block(struct udevice *dev,
- const char *pbuf, uint blocksize)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- int i, ret;
-
- /* wait until the buffer becomes empty */
- ret = uniphier_sd_wait_for_irq(dev, UNIPHIER_SD_INFO2,
- UNIPHIER_SD_INFO2_BWE);
- if (ret)
- return ret;
-
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO2);
-
- if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
- const u64 *buf = (const u64 *)pbuf;
- if (likely(IS_ALIGNED((uintptr_t)buf, 8))) {
- for (i = 0; i < blocksize / 8; i++) {
- uniphier_sd_writeq(priv, *buf++,
- UNIPHIER_SD_BUF);
- }
- } else {
- for (i = 0; i < blocksize / 8; i++) {
- u64 data = get_unaligned(buf++);
- uniphier_sd_writeq(priv, data,
- UNIPHIER_SD_BUF);
- }
- }
- } else {
- const u32 *buf = (const u32 *)pbuf;
- if (likely(IS_ALIGNED((uintptr_t)buf, 4))) {
- for (i = 0; i < blocksize / 4; i++) {
- uniphier_sd_writel(priv, *buf++,
- UNIPHIER_SD_BUF);
- }
- } else {
- for (i = 0; i < blocksize / 4; i++) {
- u32 data = get_unaligned(buf++);
- uniphier_sd_writel(priv, data,
- UNIPHIER_SD_BUF);
- }
- }
- }
-
- return 0;
-}
-
-static int uniphier_sd_pio_xfer(struct udevice *dev, struct mmc_data *data)
-{
- const char *src = data->src;
- char *dest = data->dest;
- int i, ret;
-
- for (i = 0; i < data->blocks; i++) {
- if (data->flags & MMC_DATA_READ)
- ret = uniphier_sd_pio_read_one_block(dev, dest,
- data->blocksize);
- else
- ret = uniphier_sd_pio_write_one_block(dev, src,
- data->blocksize);
- if (ret)
- return ret;
-
- if (data->flags & MMC_DATA_READ)
- dest += data->blocksize;
- else
- src += data->blocksize;
- }
-
- return 0;
-}
-
-static void uniphier_sd_dma_start(struct uniphier_sd_priv *priv,
- dma_addr_t dma_addr)
-{
- u32 tmp;
-
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_DMA_INFO1);
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_DMA_INFO2);
-
- /* enable DMA */
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_EXTMODE);
- tmp |= UNIPHIER_SD_EXTMODE_DMA_EN;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_EXTMODE);
-
- uniphier_sd_writel(priv, dma_addr & U32_MAX, UNIPHIER_SD_DMA_ADDR_L);
-
- /* suppress the warning "right shift count >= width of type" */
- dma_addr >>= min_t(int, 32, 8 * sizeof(dma_addr));
-
- uniphier_sd_writel(priv, dma_addr & U32_MAX, UNIPHIER_SD_DMA_ADDR_H);
-
- uniphier_sd_writel(priv, UNIPHIER_SD_DMA_CTL_START, UNIPHIER_SD_DMA_CTL);
-}
-
-static int uniphier_sd_dma_wait_for_irq(struct udevice *dev, u32 flag,
- unsigned int blocks)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- long wait = 1000000 + 10 * blocks;
-
- while (!(uniphier_sd_readl(priv, UNIPHIER_SD_DMA_INFO1) & flag)) {
- if (wait-- < 0) {
- dev_err(dev, "timeout during DMA\n");
- return -ETIMEDOUT;
- }
-
- udelay(10);
- }
-
- if (uniphier_sd_readl(priv, UNIPHIER_SD_DMA_INFO2)) {
- dev_err(dev, "error during DMA\n");
- return -EIO;
- }
-
- return 0;
-}
-
-static int uniphier_sd_dma_xfer(struct udevice *dev, struct mmc_data *data)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- size_t len = data->blocks * data->blocksize;
- void *buf;
- enum dma_data_direction dir;
- dma_addr_t dma_addr;
- u32 poll_flag, tmp;
- int ret;
-
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_DMA_MODE);
-
- if (data->flags & MMC_DATA_READ) {
- buf = data->dest;
- dir = DMA_FROM_DEVICE;
- poll_flag = UNIPHIER_SD_DMA_INFO1_END_RD2;
- tmp |= UNIPHIER_SD_DMA_MODE_DIR_RD;
- } else {
- buf = (void *)data->src;
- dir = DMA_TO_DEVICE;
- poll_flag = UNIPHIER_SD_DMA_INFO1_END_WR;
- tmp &= ~UNIPHIER_SD_DMA_MODE_DIR_RD;
- }
-
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_DMA_MODE);
-
- dma_addr = __dma_map_single(buf, len, dir);
-
- uniphier_sd_dma_start(priv, dma_addr);
-
- ret = uniphier_sd_dma_wait_for_irq(dev, poll_flag, data->blocks);
-
- __dma_unmap_single(dma_addr, len, dir);
-
- return ret;
-}
-
-/* check if the address is DMA'able */
-static bool uniphier_sd_addr_is_dmaable(unsigned long addr)
-{
- if (!IS_ALIGNED(addr, UNIPHIER_SD_DMA_MINALIGN))
- return false;
-
-#if defined(CONFIG_ARCH_UNIPHIER) && !defined(CONFIG_ARM64) && \
- defined(CONFIG_SPL_BUILD)
- /*
- * For UniPhier ARMv7 SoCs, the stack is allocated in the locked ways
- * of L2, which is unreachable from the DMA engine.
- */
- if (addr < CONFIG_SPL_STACK)
- return false;
-#endif
-
- return true;
-}
-
-static int uniphier_sd_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
- struct mmc_data *data)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- int ret;
- u32 tmp;
-
- if (uniphier_sd_readl(priv, UNIPHIER_SD_INFO2) & UNIPHIER_SD_INFO2_CBSY) {
- dev_err(dev, "command busy\n");
- return -EBUSY;
- }
-
- /* clear all status flags */
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO1);
- uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO2);
-
- /* disable DMA once */
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_EXTMODE);
- tmp &= ~UNIPHIER_SD_EXTMODE_DMA_EN;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_EXTMODE);
-
- uniphier_sd_writel(priv, cmd->cmdarg, UNIPHIER_SD_ARG);
-
- tmp = cmd->cmdidx;
-
- if (data) {
- uniphier_sd_writel(priv, data->blocksize, UNIPHIER_SD_SIZE);
- uniphier_sd_writel(priv, data->blocks, UNIPHIER_SD_SECCNT);
-
- /* Do not send CMD12 automatically */
- tmp |= UNIPHIER_SD_CMD_NOSTOP | UNIPHIER_SD_CMD_DATA;
-
- if (data->blocks > 1)
- tmp |= UNIPHIER_SD_CMD_MULTI;
-
- if (data->flags & MMC_DATA_READ)
- tmp |= UNIPHIER_SD_CMD_RD;
- }
-
- /*
- * Do not use the response type auto-detection on this hardware.
- * CMD8, for example, has different response types on SD and eMMC,
- * while this controller always assumes the response type for SD.
- * Set the response type manually.
- */
- switch (cmd->resp_type) {
- case MMC_RSP_NONE:
- tmp |= UNIPHIER_SD_CMD_RSP_NONE;
- break;
- case MMC_RSP_R1:
- tmp |= UNIPHIER_SD_CMD_RSP_R1;
- break;
- case MMC_RSP_R1b:
- tmp |= UNIPHIER_SD_CMD_RSP_R1B;
- break;
- case MMC_RSP_R2:
- tmp |= UNIPHIER_SD_CMD_RSP_R2;
- break;
- case MMC_RSP_R3:
- tmp |= UNIPHIER_SD_CMD_RSP_R3;
- break;
- default:
- dev_err(dev, "unknown response type\n");
- return -EINVAL;
- }
-
- dev_dbg(dev, "sending CMD%d (SD_CMD=%08x, SD_ARG=%08x)\n",
- cmd->cmdidx, tmp, cmd->cmdarg);
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_CMD);
-
- ret = uniphier_sd_wait_for_irq(dev, UNIPHIER_SD_INFO1,
- UNIPHIER_SD_INFO1_RSP);
- if (ret)
- return ret;
-
- if (cmd->resp_type & MMC_RSP_136) {
- u32 rsp_127_104 = uniphier_sd_readl(priv, UNIPHIER_SD_RSP76);
- u32 rsp_103_72 = uniphier_sd_readl(priv, UNIPHIER_SD_RSP54);
- u32 rsp_71_40 = uniphier_sd_readl(priv, UNIPHIER_SD_RSP32);
- u32 rsp_39_8 = uniphier_sd_readl(priv, UNIPHIER_SD_RSP10);
-
- cmd->response[0] = ((rsp_127_104 & 0x00ffffff) << 8) |
- ((rsp_103_72 & 0xff000000) >> 24);
- cmd->response[1] = ((rsp_103_72 & 0x00ffffff) << 8) |
- ((rsp_71_40 & 0xff000000) >> 24);
- cmd->response[2] = ((rsp_71_40 & 0x00ffffff) << 8) |
- ((rsp_39_8 & 0xff000000) >> 24);
- cmd->response[3] = (rsp_39_8 & 0xffffff) << 8;
- } else {
- /* bit 39-8 */
- cmd->response[0] = uniphier_sd_readl(priv, UNIPHIER_SD_RSP10);
- }
-
- if (data) {
- /* use DMA if the HW supports it and the buffer is aligned */
- if (priv->caps & UNIPHIER_SD_CAP_DMA_INTERNAL &&
- uniphier_sd_addr_is_dmaable((long)data->src))
- ret = uniphier_sd_dma_xfer(dev, data);
- else
- ret = uniphier_sd_pio_xfer(dev, data);
-
- ret = uniphier_sd_wait_for_irq(dev, UNIPHIER_SD_INFO1,
- UNIPHIER_SD_INFO1_CMP);
- if (ret)
- return ret;
- }
-
- return ret;
-}
-
-static int uniphier_sd_set_bus_width(struct uniphier_sd_priv *priv,
- struct mmc *mmc)
-{
- u32 val, tmp;
-
- switch (mmc->bus_width) {
- case 1:
- val = UNIPHIER_SD_OPTION_WIDTH_1;
- break;
- case 4:
- val = UNIPHIER_SD_OPTION_WIDTH_4;
- break;
- case 8:
- val = UNIPHIER_SD_OPTION_WIDTH_8;
- break;
- default:
- return -EINVAL;
- }
-
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_OPTION);
- tmp &= ~UNIPHIER_SD_OPTION_WIDTH_MASK;
- tmp |= val;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_OPTION);
-
- return 0;
-}
-
-static void uniphier_sd_set_ddr_mode(struct uniphier_sd_priv *priv,
- struct mmc *mmc)
-{
- u32 tmp;
-
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_IF_MODE);
- if (mmc->ddr_mode)
- tmp |= UNIPHIER_SD_IF_MODE_DDR;
- else
- tmp &= ~UNIPHIER_SD_IF_MODE_DDR;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_IF_MODE);
-}
-
-static void uniphier_sd_set_clk_rate(struct uniphier_sd_priv *priv,
- struct mmc *mmc)
-{
- unsigned int divisor;
- u32 val, tmp;
-
- if (!mmc->clock)
- return;
-
- divisor = DIV_ROUND_UP(priv->mclk, mmc->clock);
-
- if (divisor <= 1)
- val = UNIPHIER_SD_CLKCTL_DIV1;
- else if (divisor <= 2)
- val = UNIPHIER_SD_CLKCTL_DIV2;
- else if (divisor <= 4)
- val = UNIPHIER_SD_CLKCTL_DIV4;
- else if (divisor <= 8)
- val = UNIPHIER_SD_CLKCTL_DIV8;
- else if (divisor <= 16)
- val = UNIPHIER_SD_CLKCTL_DIV16;
- else if (divisor <= 32)
- val = UNIPHIER_SD_CLKCTL_DIV32;
- else if (divisor <= 64)
- val = UNIPHIER_SD_CLKCTL_DIV64;
- else if (divisor <= 128)
- val = UNIPHIER_SD_CLKCTL_DIV128;
- else if (divisor <= 256)
- val = UNIPHIER_SD_CLKCTL_DIV256;
- else if (divisor <= 512 || !(priv->caps & UNIPHIER_SD_CAP_DIV1024))
- val = UNIPHIER_SD_CLKCTL_DIV512;
- else
- val = UNIPHIER_SD_CLKCTL_DIV1024;
-
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_CLKCTL);
- if (tmp & UNIPHIER_SD_CLKCTL_SCLKEN &&
- (tmp & UNIPHIER_SD_CLKCTL_DIV_MASK) == val)
- return;
-
- /* stop the clock before changing its rate to avoid a glitch signal */
- tmp &= ~UNIPHIER_SD_CLKCTL_SCLKEN;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_CLKCTL);
-
- tmp &= ~UNIPHIER_SD_CLKCTL_DIV_MASK;
- tmp |= val | UNIPHIER_SD_CLKCTL_OFFEN;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_CLKCTL);
-
- tmp |= UNIPHIER_SD_CLKCTL_SCLKEN;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_CLKCTL);
-
- udelay(1000);
-}
-
-static int uniphier_sd_set_ios(struct udevice *dev)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- struct mmc *mmc = mmc_get_mmc_dev(dev);
- int ret;
-
- dev_dbg(dev, "clock %uHz, DDRmode %d, width %u\n",
- mmc->clock, mmc->ddr_mode, mmc->bus_width);
-
- ret = uniphier_sd_set_bus_width(priv, mmc);
- if (ret)
- return ret;
- uniphier_sd_set_ddr_mode(priv, mmc);
- uniphier_sd_set_clk_rate(priv, mmc);
-
- return 0;
-}
-
-static int uniphier_sd_get_cd(struct udevice *dev)
-{
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
-
- if (priv->caps & UNIPHIER_SD_CAP_NONREMOVABLE)
- return 1;
-
- return !!(uniphier_sd_readl(priv, UNIPHIER_SD_INFO1) &
- UNIPHIER_SD_INFO1_CD);
-}
+#include "matsushita-common.h"
static const struct dm_mmc_ops uniphier_sd_ops = {
- .send_cmd = uniphier_sd_send_cmd,
- .set_ios = uniphier_sd_set_ios,
- .get_cd = uniphier_sd_get_cd,
+ .send_cmd = matsu_sd_send_cmd,
+ .set_ios = matsu_sd_set_ios,
+ .get_cd = matsu_sd_get_cd,
};
-static void uniphier_sd_host_init(struct uniphier_sd_priv *priv)
-{
- u32 tmp;
-
- /* soft reset of the host */
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_SOFT_RST);
- tmp &= ~UNIPHIER_SD_SOFT_RST_RSTX;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_SOFT_RST);
- tmp |= UNIPHIER_SD_SOFT_RST_RSTX;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_SOFT_RST);
-
- /* FIXME: implement eMMC hw_reset */
-
- uniphier_sd_writel(priv, UNIPHIER_SD_STOP_SEC, UNIPHIER_SD_STOP);
-
- /*
- * Connected to 32bit AXI.
- * This register dropped backward compatibility at version 0x10.
- * Write an appropriate value depending on the IP version.
- */
- uniphier_sd_writel(priv, priv->version >= 0x10 ? 0x00000101 : 0x00000000,
- UNIPHIER_SD_HOST_MODE);
-
- if (priv->caps & UNIPHIER_SD_CAP_DMA_INTERNAL) {
- tmp = uniphier_sd_readl(priv, UNIPHIER_SD_DMA_MODE);
- tmp |= UNIPHIER_SD_DMA_MODE_ADDR_INC;
- uniphier_sd_writel(priv, tmp, UNIPHIER_SD_DMA_MODE);
- }
-}
-
-static int uniphier_sd_bind(struct udevice *dev)
-{
- struct uniphier_sd_plat *plat = dev_get_platdata(dev);
-
- return mmc_bind(dev, &plat->mmc, &plat->cfg);
-}
-
-static int uniphier_sd_probe(struct udevice *dev)
-{
- struct uniphier_sd_plat *plat = dev_get_platdata(dev);
- struct uniphier_sd_priv *priv = dev_get_priv(dev);
- struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
- const u32 quirks = dev_get_driver_data(dev);
- fdt_addr_t base;
- struct clk clk;
- int ret;
-#ifdef CONFIG_DM_REGULATOR
- struct udevice *vqmmc_dev;
-#endif
-
- base = devfdt_get_addr(dev);
- if (base == FDT_ADDR_T_NONE)
- return -EINVAL;
-
- priv->regbase = devm_ioremap(dev, base, SZ_2K);
- if (!priv->regbase)
- return -ENOMEM;
-
-#ifdef CONFIG_DM_REGULATOR
- ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev);
- if (!ret) {
- /* Set the regulator to 3.3V until we support 1.8V modes */
- regulator_set_value(vqmmc_dev, 3300000);
- regulator_set_enable(vqmmc_dev, true);
- }
-#endif
-
- ret = clk_get_by_index(dev, 0, &clk);
- if (ret < 0) {
- dev_err(dev, "failed to get host clock\n");
- return ret;
- }
-
- /* set to max rate */
- priv->mclk = clk_set_rate(&clk, ULONG_MAX);
- if (IS_ERR_VALUE(priv->mclk)) {
- dev_err(dev, "failed to set rate for host clock\n");
- clk_free(&clk);
- return priv->mclk;
- }
-
- ret = clk_enable(&clk);
- clk_free(&clk);
- if (ret) {
- dev_err(dev, "failed to enable host clock\n");
- return ret;
- }
-
- plat->cfg.name = dev->name;
- plat->cfg.host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
-
- switch (fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "bus-width",
- 1)) {
- case 8:
- plat->cfg.host_caps |= MMC_MODE_8BIT;
- break;
- case 4:
- plat->cfg.host_caps |= MMC_MODE_4BIT;
- break;
- case 1:
- break;
- default:
- dev_err(dev, "Invalid \"bus-width\" value\n");
- return -EINVAL;
- }
-
- if (quirks) {
- priv->caps = quirks;
- } else {
- priv->version = uniphier_sd_readl(priv, UNIPHIER_SD_VERSION) &
- UNIPHIER_SD_VERSION_IP;
- dev_dbg(dev, "version %x\n", priv->version);
- if (priv->version >= 0x10) {
- priv->caps |= UNIPHIER_SD_CAP_DMA_INTERNAL;
- priv->caps |= UNIPHIER_SD_CAP_DIV1024;
- }
- }
-
- if (fdt_get_property(gd->fdt_blob, dev_of_offset(dev), "non-removable",
- NULL))
- priv->caps |= UNIPHIER_SD_CAP_NONREMOVABLE;
-
- uniphier_sd_host_init(priv);
-
- plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
- plat->cfg.f_min = priv->mclk /
- (priv->caps & UNIPHIER_SD_CAP_DIV1024 ? 1024 : 512);
- plat->cfg.f_max = priv->mclk;
- plat->cfg.b_max = U32_MAX; /* max value of UNIPHIER_SD_SECCNT */
-
- upriv->mmc = &plat->mmc;
-
- return 0;
-}
-
static const struct udevice_id uniphier_sd_match[] = {
- { .compatible = "renesas,sdhi-r8a7790", .data = 0 },
- { .compatible = "renesas,sdhi-r8a7791", .data = 0 },
- { .compatible = "renesas,sdhi-r8a7792", .data = 0 },
- { .compatible = "renesas,sdhi-r8a7793", .data = 0 },
- { .compatible = "renesas,sdhi-r8a7794", .data = 0 },
- { .compatible = "renesas,sdhi-r8a7795", .data = UNIPHIER_SD_CAP_64BIT },
- { .compatible = "renesas,sdhi-r8a7796", .data = UNIPHIER_SD_CAP_64BIT },
- { .compatible = "renesas,sdhi-r8a77965", .data = UNIPHIER_SD_CAP_64BIT },
- { .compatible = "renesas,sdhi-r8a77970", .data = UNIPHIER_SD_CAP_64BIT },
- { .compatible = "renesas,sdhi-r8a77995", .data = UNIPHIER_SD_CAP_64BIT },
{ .compatible = "socionext,uniphier-sdhc", .data = 0 },
{ /* sentinel */ }
};
@@ -865,9 +34,9 @@
.name = "uniphier-mmc",
.id = UCLASS_MMC,
.of_match = uniphier_sd_match,
- .bind = uniphier_sd_bind,
- .probe = uniphier_sd_probe,
- .priv_auto_alloc_size = sizeof(struct uniphier_sd_priv),
- .platdata_auto_alloc_size = sizeof(struct uniphier_sd_plat),
+ .bind = matsu_sd_bind,
+ .probe = matsu_sd_probe,
+ .priv_auto_alloc_size = sizeof(struct matsu_sd_priv),
+ .platdata_auto_alloc_size = sizeof(struct matsu_sd_plat),
.ops = &uniphier_sd_ops,
};