static int mmc_resource_init(int sdc_no)
{
- struct sunxi_mmc_priv *mmchost = &mmc_host[sdc_no];
+ struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
int cd_pin, ret = 0;
switch (sdc_no) {
case 0:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC0_BASE;
- mmchost->mclkreg = &ccm->sd0_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC0_BASE;
+ priv->mclkreg = &ccm->sd0_clk_cfg;
break;
case 1:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC1_BASE;
- mmchost->mclkreg = &ccm->sd1_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC1_BASE;
+ priv->mclkreg = &ccm->sd1_clk_cfg;
break;
case 2:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC2_BASE;
- mmchost->mclkreg = &ccm->sd2_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC2_BASE;
+ priv->mclkreg = &ccm->sd2_clk_cfg;
break;
case 3:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC3_BASE;
- mmchost->mclkreg = &ccm->sd3_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC3_BASE;
+ priv->mclkreg = &ccm->sd3_clk_cfg;
break;
default:
printf("Wrong mmc number %d\n", sdc_no);
return -1;
}
- mmchost->mmc_no = sdc_no;
+ priv->mmc_no = sdc_no;
cd_pin = sunxi_mmc_getcd_gpio(sdc_no);
if (cd_pin >= 0) {
return ret;
}
-static int mmc_set_mod_clk(struct sunxi_mmc_priv *mmchost, unsigned int hz)
+static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
{
unsigned int pll, pll_hz, div, n, oclk_dly, sclk_dly;
}
if (n > 3) {
- printf("mmc %u error cannot set clock to %u\n",
- mmchost->mmc_no, hz);
+ printf("mmc %u error cannot set clock to %u\n", priv->mmc_no,
+ hz);
return -1;
}
writel(CCM_MMC_CTRL_ENABLE | pll | CCM_MMC_CTRL_SCLK_DLY(sclk_dly) |
CCM_MMC_CTRL_N(n) | CCM_MMC_CTRL_OCLK_DLY(oclk_dly) |
- CCM_MMC_CTRL_M(div), mmchost->mclkreg);
+ CCM_MMC_CTRL_M(div), priv->mclkreg);
debug("mmc %u set mod-clk req %u parent %u n %u m %u rate %u\n",
- mmchost->mmc_no, hz, pll_hz, 1u << n, div,
- pll_hz / (1u << n) / div);
+ priv->mmc_no, hz, pll_hz, 1u << n, div, pll_hz / (1u << n) / div);
return 0;
}
static int mmc_clk_io_on(int sdc_no)
{
- struct sunxi_mmc_priv *mmchost = &mmc_host[sdc_no];
+ struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
debug("init mmc %d clock and io\n", sdc_no);
SUNXI_MMC_COMMON_BASE + 4 * sdc_no);
#endif
- return mmc_set_mod_clk(mmchost, 24000000);
+ return mmc_set_mod_clk(priv, 24000000);
}
static int mmc_update_clk(struct mmc *mmc)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int cmd;
unsigned timeout_msecs = 2000;
cmd = SUNXI_MMC_CMD_START |
SUNXI_MMC_CMD_UPCLK_ONLY |
SUNXI_MMC_CMD_WAIT_PRE_OVER;
- writel(cmd, &mmchost->reg->cmd);
- while (readl(&mmchost->reg->cmd) & SUNXI_MMC_CMD_START) {
+ writel(cmd, &priv->reg->cmd);
+ while (readl(&priv->reg->cmd) & SUNXI_MMC_CMD_START) {
if (!timeout_msecs--)
return -1;
udelay(1000);
}
/* clock update sets various irq status bits, clear these */
- writel(readl(&mmchost->reg->rint), &mmchost->reg->rint);
+ writel(readl(&priv->reg->rint), &priv->reg->rint);
return 0;
}
static int mmc_config_clock(struct mmc *mmc)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
- unsigned rval = readl(&mmchost->reg->clkcr);
+ struct sunxi_mmc_priv *priv = mmc->priv;
+ unsigned rval = readl(&priv->reg->clkcr);
/* Disable Clock */
rval &= ~SUNXI_MMC_CLK_ENABLE;
- writel(rval, &mmchost->reg->clkcr);
+ writel(rval, &priv->reg->clkcr);
if (mmc_update_clk(mmc))
return -1;
/* Set mod_clk to new rate */
- if (mmc_set_mod_clk(mmchost, mmc->clock))
+ if (mmc_set_mod_clk(priv, mmc->clock))
return -1;
/* Clear internal divider */
rval &= ~SUNXI_MMC_CLK_DIVIDER_MASK;
- writel(rval, &mmchost->reg->clkcr);
+ writel(rval, &priv->reg->clkcr);
/* Re-enable Clock */
rval |= SUNXI_MMC_CLK_ENABLE;
- writel(rval, &mmchost->reg->clkcr);
+ writel(rval, &priv->reg->clkcr);
if (mmc_update_clk(mmc))
return -1;
static int sunxi_mmc_set_ios(struct mmc *mmc)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
debug("set ios: bus_width: %x, clock: %d\n",
mmc->bus_width, mmc->clock);
/* Change clock first */
if (mmc->clock && mmc_config_clock(mmc) != 0) {
- mmchost->fatal_err = 1;
+ priv->fatal_err = 1;
return -EINVAL;
}
/* Change bus width */
if (mmc->bus_width == 8)
- writel(0x2, &mmchost->reg->width);
+ writel(0x2, &priv->reg->width);
else if (mmc->bus_width == 4)
- writel(0x1, &mmchost->reg->width);
+ writel(0x1, &priv->reg->width);
else
- writel(0x0, &mmchost->reg->width);
+ writel(0x0, &priv->reg->width);
return 0;
}
static int sunxi_mmc_core_init(struct mmc *mmc)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
/* Reset controller */
- writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl);
+ writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
udelay(1000);
return 0;
static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
const int reading = !!(data->flags & MMC_DATA_READ);
const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
SUNXI_MMC_STATUS_FIFO_FULL;
timeout_usecs = 2000000;
/* Always read / write data through the CPU */
- setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
+ setbits_le32(&priv->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
for (i = 0; i < (byte_cnt >> 2); i++) {
- while (readl(&mmchost->reg->status) & status_bit) {
+ while (readl(&priv->reg->status) & status_bit) {
if (!timeout_usecs--)
return -1;
udelay(1);
}
if (reading)
- buff[i] = readl(&mmchost->reg->fifo);
+ buff[i] = readl(&priv->reg->fifo);
else
- writel(buff[i], &mmchost->reg->fifo);
+ writel(buff[i], &priv->reg->fifo);
}
return 0;
static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs,
unsigned int done_bit, const char *what)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int status;
do {
- status = readl(&mmchost->reg->rint);
+ status = readl(&priv->reg->rint);
if (!timeout_msecs-- ||
(status & SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT)) {
debug("%s timeout %x\n", what,
static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int cmdval = SUNXI_MMC_CMD_START;
unsigned int timeout_msecs;
int error = 0;
unsigned int status = 0;
unsigned int bytecnt = 0;
- if (mmchost->fatal_err)
+ if (priv->fatal_err)
return -1;
if (cmd->resp_type & MMC_RSP_BUSY)
debug("mmc cmd %d check rsp busy\n", cmd->cmdidx);
cmdval |= SUNXI_MMC_CMD_WRITE;
if (data->blocks > 1)
cmdval |= SUNXI_MMC_CMD_AUTO_STOP;
- writel(data->blocksize, &mmchost->reg->blksz);
- writel(data->blocks * data->blocksize, &mmchost->reg->bytecnt);
+ writel(data->blocksize, &priv->reg->blksz);
+ writel(data->blocks * data->blocksize, &priv->reg->bytecnt);
}
- debug("mmc %d, cmd %d(0x%08x), arg 0x%08x\n", mmchost->mmc_no,
+ debug("mmc %d, cmd %d(0x%08x), arg 0x%08x\n", priv->mmc_no,
cmd->cmdidx, cmdval | cmd->cmdidx, cmd->cmdarg);
- writel(cmd->cmdarg, &mmchost->reg->arg);
+ writel(cmd->cmdarg, &priv->reg->arg);
if (!data)
- writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd);
+ writel(cmdval | cmd->cmdidx, &priv->reg->cmd);
/*
* transfer data and check status
bytecnt = data->blocksize * data->blocks;
debug("trans data %d bytes\n", bytecnt);
- writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd);
+ writel(cmdval | cmd->cmdidx, &priv->reg->cmd);
ret = mmc_trans_data_by_cpu(mmc, data);
if (ret) {
- error = readl(&mmchost->reg->rint) & \
+ error = readl(&priv->reg->rint) &
SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT;
error = -ETIMEDOUT;
goto out;
if (cmd->resp_type & MMC_RSP_BUSY) {
timeout_msecs = 2000;
do {
- status = readl(&mmchost->reg->status);
+ status = readl(&priv->reg->status);
if (!timeout_msecs--) {
debug("busy timeout\n");
error = -ETIMEDOUT;
}
if (cmd->resp_type & MMC_RSP_136) {
- cmd->response[0] = readl(&mmchost->reg->resp3);
- cmd->response[1] = readl(&mmchost->reg->resp2);
- cmd->response[2] = readl(&mmchost->reg->resp1);
- cmd->response[3] = readl(&mmchost->reg->resp0);
+ cmd->response[0] = readl(&priv->reg->resp3);
+ cmd->response[1] = readl(&priv->reg->resp2);
+ cmd->response[2] = readl(&priv->reg->resp1);
+ cmd->response[3] = readl(&priv->reg->resp0);
debug("mmc resp 0x%08x 0x%08x 0x%08x 0x%08x\n",
cmd->response[3], cmd->response[2],
cmd->response[1], cmd->response[0]);
} else {
- cmd->response[0] = readl(&mmchost->reg->resp0);
+ cmd->response[0] = readl(&priv->reg->resp0);
debug("mmc resp 0x%08x\n", cmd->response[0]);
}
out:
if (error < 0) {
- writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl);
+ writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
mmc_update_clk(mmc);
}
- writel(0xffffffff, &mmchost->reg->rint);
- writel(readl(&mmchost->reg->gctrl) | SUNXI_MMC_GCTRL_FIFO_RESET,
- &mmchost->reg->gctrl);
+ writel(0xffffffff, &priv->reg->rint);
+ writel(readl(&priv->reg->gctrl) | SUNXI_MMC_GCTRL_FIFO_RESET,
+ &priv->reg->gctrl);
return error;
}
static int sunxi_mmc_getcd(struct mmc *mmc)
{
- struct sunxi_mmc_priv *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
int cd_pin;
- cd_pin = sunxi_mmc_getcd_gpio(mmchost->mmc_no);
+ cd_pin = sunxi_mmc_getcd_gpio(priv->mmc_no);
if (cd_pin < 0)
return 1;
projects / u-boot / blobdiff