From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iX16X-0006pf-GV for barebox@lists.infradead.org; Tue, 19 Nov 2019 10:51:40 +0000 From: Sascha Hauer Date: Tue, 19 Nov 2019 11:50:20 +0100 Message-Id: <20191119105036.12300-6-s.hauer@pengutronix.de> In-Reply-To: <20191119105036.12300-1-s.hauer@pengutronix.de> References: <20191119105036.12300-1-s.hauer@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 05/21] mci: tegra: use sdhci helpers To: Barebox List To use the sdhci helpers we have to switch to the sdhci accessors. Also use sdhci_read_response(). Signed-off-by: Sascha Hauer --- drivers/mci/Kconfig | 1 + drivers/mci/tegra-sdmmc.c | 122 ++++++++++++++++++++------------------ 2 files changed, 65 insertions(+), 58 deletions(-) diff --git a/drivers/mci/Kconfig b/drivers/mci/Kconfig index 23a38721aa..7c5310deaf 100644 --- a/drivers/mci/Kconfig +++ b/drivers/mci/Kconfig @@ -136,6 +136,7 @@ config MCI_MMCI config MCI_TEGRA bool "Tegra SD/MMC" depends on ARCH_TEGRA + select MCI_SDHCI help Enable this to support SD and MMC card read/write on a Tegra based systems. diff --git a/drivers/mci/tegra-sdmmc.c b/drivers/mci/tegra-sdmmc.c index 4c47918076..7618d831b1 100644 --- a/drivers/mci/tegra-sdmmc.c +++ b/drivers/mci/tegra-sdmmc.c @@ -74,9 +74,24 @@ struct tegra_sdmmc_host { struct clk *clk; struct reset_control *reset; int gpio_cd, gpio_pwr; + struct sdhci sdhci; }; #define to_tegra_sdmmc_host(mci) container_of(mci, struct tegra_sdmmc_host, mci) +static u32 tegra_sdmmc_read32(struct sdhci *sdhci, int reg) +{ + struct tegra_sdmmc_host *host = container_of(sdhci, struct tegra_sdmmc_host, sdhci); + + return readl(host->regs + reg); +} + +static void tegra_sdmmc_write32(struct sdhci *sdhci, int reg, u32 val) +{ + struct tegra_sdmmc_host *host = container_of(sdhci, struct tegra_sdmmc_host, sdhci); + + writel(val, host->regs + reg); +} + static int tegra_sdmmc_wait_inhibit(struct tegra_sdmmc_host *host, struct mci_cmd *cmd, struct mci_data *data, unsigned int timeout) @@ -91,7 +106,7 @@ static int tegra_sdmmc_wait_inhibit(struct tegra_sdmmc_host *host, val |= TEGRA_SDMMC_PRESENT_STATE_CMD_INHIBIT_DAT; wait_on_timeout(timeout * MSECOND, - !(readl(host->regs + TEGRA_SDMMC_PRESENT_STATE) & val)); + !(sdhci_read32(&host->sdhci, TEGRA_SDMMC_PRESENT_STATE) & val)); return 0; } @@ -115,18 +130,18 @@ static int tegra_sdmmc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, if (data->flags & MMC_DATA_WRITE) { dma_sync_single_for_device((unsigned long)data->src, num_bytes, DMA_TO_DEVICE); - writel((u32)data->src, host->regs + SDHCI_DMA_ADDRESS); + sdhci_write32(&host->sdhci, SDHCI_DMA_ADDRESS, (u32)data->src); } else { dma_sync_single_for_device((unsigned long)data->dest, num_bytes, DMA_FROM_DEVICE); - writel((u32)data->dest, host->regs + SDHCI_DMA_ADDRESS); + sdhci_write32(&host->sdhci, SDHCI_DMA_ADDRESS, (u32)data->dest); } - writel((7 << 12) | data->blocks << 16 | data->blocksize, - host->regs + SDHCI_BLOCK_SIZE__BLOCK_COUNT); + sdhci_write32(&host->sdhci, SDHCI_BLOCK_SIZE__BLOCK_COUNT, + (7 << 12) | data->blocks << 16 | data->blocksize); } - writel(cmd->cmdarg, host->regs + SDHCI_ARGUMENT); + sdhci_write32(&host->sdhci, SDHCI_ARGUMENT, cmd->cmdarg); if ((cmd->resp_type & MMC_RSP_136) && (cmd->resp_type & MMC_RSP_BUSY)) return -1; @@ -158,59 +173,48 @@ static int tegra_sdmmc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, if (data) val |= COMMAND_DPSEL; - writel(COMMAND_CMD(cmd->cmdidx) | val, - host->regs + SDHCI_TRANSFER_MODE__COMMAND); + sdhci_write32(&host->sdhci, SDHCI_TRANSFER_MODE__COMMAND, + COMMAND_CMD(cmd->cmdidx) | val); ret = wait_on_timeout(100 * MSECOND, - (val = readl(host->regs + SDHCI_INT_STATUS)) + (val = sdhci_read32(&host->sdhci, SDHCI_INT_STATUS)) & IRQSTAT_CC); if (ret) { - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); return ret; } if ((val & IRQSTAT_CC) && !data) - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); if (val & TEGRA_SDMMC_INTERRUPT_STATUS_CMD_TIMEOUT) { /* Timeout Error */ dev_dbg(mci->hw_dev, "timeout: %08x cmd %d\n", val, cmd->cmdidx); - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); return -ETIMEDOUT; } else if (val & TEGRA_SDMMC_INTERRUPT_STATUS_ERR_INTERRUPT) { /* Error Interrupt */ dev_dbg(mci->hw_dev, "error: %08x cmd %d\n", val, cmd->cmdidx); - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); return -EIO; } if (cmd->resp_type & MMC_RSP_PRESENT) { - if (cmd->resp_type & MMC_RSP_136) { - u32 cmdrsp[4]; - - cmdrsp[3] = readl(host->regs + SDHCI_RESPONSE_3); - cmdrsp[2] = readl(host->regs + SDHCI_RESPONSE_2); - cmdrsp[1] = readl(host->regs + SDHCI_RESPONSE_1); - cmdrsp[0] = readl(host->regs + SDHCI_RESPONSE_0); - cmd->response[0] = (cmdrsp[3] << 8) | (cmdrsp[2] >> 24); - cmd->response[1] = (cmdrsp[2] << 8) | (cmdrsp[1] >> 24); - cmd->response[2] = (cmdrsp[1] << 8) | (cmdrsp[0] >> 24); - cmd->response[3] = (cmdrsp[0] << 8); - } else if (cmd->resp_type & MMC_RSP_BUSY) { + sdhci_read_response(&host->sdhci, cmd); + + if (cmd->resp_type & MMC_RSP_BUSY) { ret = wait_on_timeout(100 * MSECOND, - readl(host->regs + TEGRA_SDMMC_PRESENT_STATE) + sdhci_read32(&host->sdhci, TEGRA_SDMMC_PRESENT_STATE) & (1 << 20)); if (ret) { dev_err(mci->hw_dev, "card is still busy\n"); - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); return ret; } - cmd->response[0] = readl(host->regs + SDHCI_RESPONSE_0); - } else { - cmd->response[0] = readl(host->regs + SDHCI_RESPONSE_0); + cmd->response[0] = sdhci_read32(&host->sdhci, SDHCI_RESPONSE_0); } } @@ -218,11 +222,11 @@ static int tegra_sdmmc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, uint64_t start = get_time_ns(); while (1) { - val = readl(host->regs + SDHCI_INT_STATUS); + val = sdhci_read32(&host->sdhci, SDHCI_INT_STATUS); if (val & TEGRA_SDMMC_INTERRUPT_STATUS_ERR_INTERRUPT) { /* Error Interrupt */ - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); dev_err(mci->hw_dev, "error during transfer: 0x%08x\n", val); return -EIO; @@ -234,27 +238,26 @@ static int tegra_sdmmc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, u32 address = readl(host->regs + SDHCI_DMA_ADDRESS); - writel(IRQSTAT_DINT, - host->regs + SDHCI_INT_STATUS); - writel(address, host->regs + SDHCI_DMA_ADDRESS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, IRQSTAT_DINT); + sdhci_write32(&host->sdhci, SDHCI_DMA_ADDRESS, address); } else if (val & IRQSTAT_TC) { /* Transfer Complete */; break; } else if (is_timeout(start, 2 * SECOND)) { - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); dev_err(mci->hw_dev, "MMC Timeout\n" " Interrupt status 0x%08x\n" " Interrupt status enable 0x%08x\n" " Interrupt signal enable 0x%08x\n" " Present status 0x%08x\n", val, - readl(host->regs + SDHCI_INT_ENABLE), - readl(host->regs + SDHCI_SIGNAL_ENABLE), - readl(host->regs + SDHCI_PRESENT_STATE)); + sdhci_read32(&host->sdhci, SDHCI_INT_ENABLE), + sdhci_read32(&host->sdhci, SDHCI_SIGNAL_ENABLE), + sdhci_read32(&host->sdhci, SDHCI_PRESENT_STATE)); return -ETIMEDOUT; } } - writel(val, host->regs + SDHCI_INT_STATUS); + sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, val); if (data->flags & MMC_DATA_WRITE) dma_sync_single_for_cpu((unsigned long)data->src, @@ -277,25 +280,25 @@ static void tegra_sdmmc_set_clock(struct tegra_sdmmc_host *host, u32 clock) } /* clear clock related bits */ - val = readl(host->regs + TEGRA_SDMMC_CLK_CNTL); + val = sdhci_read32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL); val &= 0xffff0000; - writel(val, host->regs + TEGRA_SDMMC_CLK_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL, val); /* set new frequency */ val |= prediv << 8; val |= TEGRA_SDMMC_CLK_CNTL_INTERNAL_CLOCK_EN; - writel(val, host->regs + TEGRA_SDMMC_CLK_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL, val); clk_set_rate(host->clk, adjusted_clock); /* wait for controller to settle */ wait_on_timeout(10 * MSECOND, - !(readl(host->regs + TEGRA_SDMMC_CLK_CNTL) & + !(sdhci_read32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL) & TEGRA_SDMMC_CLK_INTERNAL_CLOCK_STABLE)); /* enable card clock */ val |= TEGRA_SDMMC_CLK_CNTL_SD_CLOCK_EN; - writel(val, host->regs + TEGRA_SDMMC_CLK_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL, val); } static void tegra_sdmmc_set_ios(struct mci_host *mci, struct mci_ios *ios) @@ -308,7 +311,7 @@ static void tegra_sdmmc_set_ios(struct mci_host *mci, struct mci_ios *ios) tegra_sdmmc_set_clock(host, ios->clock); /* set bus width */ - val = readl(host->regs + TEGRA_SDMMC_PWR_CNTL); + val = sdhci_read32(&host->sdhci, TEGRA_SDMMC_PWR_CNTL); val &= ~(0x21); if (ios->bus_width == MMC_BUS_WIDTH_8) @@ -316,7 +319,7 @@ static void tegra_sdmmc_set_ios(struct mci_host *mci, struct mci_ios *ios) else if (ios->bus_width == MMC_BUS_WIDTH_4) val |= (1 << 1); - writel(val, host->regs + TEGRA_SDMMC_PWR_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_PWR_CNTL, val); } static int tegra_sdmmc_init(struct mci_host *mci, struct device_d *dev) @@ -327,8 +330,8 @@ static int tegra_sdmmc_init(struct mci_host *mci, struct device_d *dev) int ret; /* reset controller */ - writel(TEGRA_SDMMC_CLK_CNTL_SW_RESET_FOR_ALL, - regs + TEGRA_SDMMC_CLK_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL, + TEGRA_SDMMC_CLK_CNTL_SW_RESET_FOR_ALL); ret = wait_on_timeout(100 * MSECOND, !(readl(regs + TEGRA_SDMMC_CLK_CNTL) & @@ -342,7 +345,7 @@ static int tegra_sdmmc_init(struct mci_host *mci, struct device_d *dev) val = readl(regs + TEGRA_SDMMC_PWR_CNTL); val &= ~(0xff << 8); val |= TEGRA_SDMMC_PWR_CNTL_33_V | TEGRA_SDMMC_PWR_CNTL_SD_BUS; - writel(val, regs + TEGRA_SDMMC_PWR_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_PWR_CNTL, val); /* sdmmc1 and sdmmc3 on T30 need a bit of padctrl init */ if (of_device_is_compatible(mci->hw_dev->device_node, @@ -351,21 +354,21 @@ static int tegra_sdmmc_init(struct mci_host *mci, struct device_d *dev) val = readl(regs + TEGRA_SDMMC_SDMEMCOMPPADCTRL); val &= 0xfffffff0; val |= 0x7 << TEGRA_SDMMC_SDMEMCOMPPADCTRL_VREF_SEL_SHIFT; - writel(val, regs + TEGRA_SDMMC_SDMEMCOMPPADCTRL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_SDMEMCOMPPADCTRL, val); val = readl(regs + TEGRA_SDMMC_AUTO_CAL_CONFIG); val &= 0xffff0000; val |= (0x62 << TEGRA_SDMMC_AUTO_CAL_CONFIG_PU_OFFSET_SHIFT) | (0x70 << TEGRA_SDMMC_AUTO_CAL_CONFIG_PD_OFFSET_SHIFT) | TEGRA_SDMMC_AUTO_CAL_CONFIG_ENABLE; - writel(val, regs + TEGRA_SDMMC_AUTO_CAL_CONFIG); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_AUTO_CAL_CONFIG, val); } /* setup signaling */ - writel(0xffffffff, regs + TEGRA_SDMMC_INT_STAT_EN); - writel(0xffffffff, regs + TEGRA_SDMMC_INT_SIG_EN); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_INT_STAT_EN, 0xffffffff); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_INT_SIG_EN, 0xffffffff); - writel(0xe << 16, regs + TEGRA_SDMMC_CLK_CNTL); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_CLK_CNTL, 0xe << 16); val = readl(regs + TEGRA_SDMMC_INT_STAT_EN); val &= ~(0xffff); @@ -374,12 +377,12 @@ static int tegra_sdmmc_init(struct mci_host *mci, struct device_d *dev) TEGRA_SDMMC_INT_STAT_EN_DMA_INTERRUPT | TEGRA_SDMMC_INT_STAT_EN_BUFFER_WRITE_READY | TEGRA_SDMMC_INT_STAT_EN_BUFFER_READ_READY); - writel(val, regs + TEGRA_SDMMC_INT_STAT_EN); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_INT_STAT_EN, val); val = readl(regs + TEGRA_SDMMC_INT_SIG_EN); val &= ~(0xffff); val |= TEGRA_SDMMC_INT_SIG_EN_XFER_COMPLETE; - writel(val, regs + TEGRA_SDMMC_INT_SIG_EN); + sdhci_write32(&host->sdhci, TEGRA_SDMMC_INT_SIG_EN, val); tegra_sdmmc_set_clock(host, 400000); @@ -398,7 +401,7 @@ static int tegra_sdmmc_card_present(struct mci_host *mci) return gpio_get_value(host->gpio_cd) ? 0 : 1; } - return !(readl(host->regs + SDHCI_PRESENT_STATE) & PRSSTAT_WPSPL); + return !(sdhci_read32(&host->sdhci, SDHCI_PRESENT_STATE) & PRSSTAT_WPSPL); } static int tegra_sdmmc_detect(struct device_d *dev) @@ -442,6 +445,9 @@ static int tegra_sdmmc_probe(struct device_d *dev) } host->regs = IOMEM(iores->start); + host->sdhci.read32 = tegra_sdmmc_read32; + host->sdhci.write32 = tegra_sdmmc_write32; + mci->hw_dev = dev; mci->f_max = 48000000; mci->f_min = 375000; -- 2.24.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox