Esempi in C++ (Cpp) per mxs_ssp_regs_by_bus

Esempio n. 1

File: mxsmmc.c Progetto: 13xiaobang/mini2440-uboot_2016.01

int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int))
{
	struct mmc *mmc = NULL;
	struct mxsmmc_priv *priv = NULL;
	int ret;
	const unsigned int mxsmmc_clk_id = mxs_ssp_clock_by_bus(id);

	if (!mxs_ssp_bus_id_valid(id))
		return -ENODEV;

	priv = malloc(sizeof(struct mxsmmc_priv));
	if (!priv)
		return -ENOMEM;

	priv->desc = mxs_dma_desc_alloc();
	if (!priv->desc) {
		free(priv);
		return -ENOMEM;
	}

	ret = mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + id);
	if (ret)
		return ret;

	priv->mmc_is_wp = wp;
	priv->mmc_cd = cd;
	priv->id = id;
	priv->regs = mxs_ssp_regs_by_bus(id);

	priv->cfg.name = "MXS MMC";
	priv->cfg.ops = &mxsmmc_ops;

	priv->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

	priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
			 MMC_MODE_HS_52MHz | MMC_MODE_HS;

	/*
	 * SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
	 * SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)),
	 * CLOCK_DIVIDE has to be an even value from 2 to 254, and
	 * CLOCK_RATE could be any integer from 0 to 255.
	 */
	priv->cfg.f_min = 400000;
	priv->cfg.f_max = mxc_get_clock(MXC_SSP0_CLK + mxsmmc_clk_id) * 1000 / 2;
	priv->cfg.b_max = 0x20;

	mmc = mmc_create(&priv->cfg, priv);
	if (mmc == NULL) {
		mxs_dma_desc_free(priv->desc);
		free(priv);
		return -ENOMEM;
	}
	return 0;
}

Esempio n. 2

File: mxsmmc.c Progetto: emanbehere/MySoCkit

int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int))
{
	struct mmc *mmc = NULL;
	struct mxsmmc_priv *priv = NULL;
	int ret;
#if defined(CONFIG_MX23)
	const unsigned int mxsmmc_max_id = 2;
	const unsigned int mxsmmc_clk_id = 0;
#elif defined(CONFIG_MX28)
	const unsigned int mxsmmc_max_id = 4;
	const unsigned int mxsmmc_clk_id = id;
#endif

	if (id >= mxsmmc_max_id)
		return -ENODEV;

	mmc = malloc(sizeof(struct mmc));
	if (!mmc)
		return -ENOMEM;

	priv = malloc(sizeof(struct mxsmmc_priv));
	if (!priv) {
		free(mmc);
		return -ENOMEM;
	}

	priv->desc = mxs_dma_desc_alloc();
	if (!priv->desc) {
		free(priv);
		free(mmc);
		return -ENOMEM;
	}

	ret = mxs_dma_init_channel(id + mxsmmc_id_offset);
	if (ret)
		return ret;

	priv->mmc_is_wp = wp;
	priv->mmc_cd = cd;
	priv->id = id;
	priv->regs = mxs_ssp_regs_by_bus(id);

	sprintf(mmc->name, "MXS MMC");
	mmc->send_cmd = mxsmmc_send_cmd;
	mmc->set_ios = mxsmmc_set_ios;
	mmc->init = mxsmmc_init;
	mmc->getcd = NULL;
	mmc->priv = priv;

	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

	mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
			 MMC_MODE_HS_52MHz | MMC_MODE_HS;

	/*
	 * SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
	 * SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)),
	 * CLOCK_DIVIDE has to be an even value from 2 to 254, and
	 * CLOCK_RATE could be any integer from 0 to 255.
	 */
	mmc->f_min = 400000;
	mmc->f_max = mxc_get_clock(MXC_SSP0_CLK + mxsmmc_clk_id) * 1000 / 2;
	mmc->b_max = 0x20;

	mmc_register(mmc);
	return 0;
}