mmc: tmio: convert the SDHI MMC driver from MFD to a platform driver
On sh-mobile platforms the SDHI driver was using the tmio_mmc SD/SDIO MFD cell driver. Now that the tmio_mmc driver has been split into a core and a separate MFD glue, we can support SDHI natively without the need to emulate an MFD controller. This also allows to support systems with an on-SoC SDHI controller and a separate MFD with a TMIO core. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -60,15 +60,6 @@ config MFD_ASIC3
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This driver supports the ASIC3 multifunction chip found on many
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PDAs (mainly iPAQ and HTC based ones)
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config MFD_SH_MOBILE_SDHI
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bool "Support for SuperH Mobile SDHI"
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depends on SUPERH || ARCH_SHMOBILE
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select MFD_CORE
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select TMIO_MMC_DMA
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---help---
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This driver supports the SDHI hardware block found in many
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SuperH Mobile SoCs.
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config MFD_DAVINCI_VOICECODEC
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tristate
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select MFD_CORE
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@ -265,11 +256,6 @@ config MFD_TMIO
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bool
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default n
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config TMIO_MMC_DMA
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bool
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select DMA_ENGINE
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select DMADEVICES
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config MFD_T7L66XB
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bool "Support Toshiba T7L66XB"
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depends on ARM && HAVE_CLK
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@ -6,7 +6,6 @@
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obj-$(CONFIG_MFD_88PM860X) += 88pm860x.o
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obj-$(CONFIG_MFD_SM501) += sm501.o
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obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o
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obj-$(CONFIG_MFD_SH_MOBILE_SDHI) += sh_mobile_sdhi.o
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obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
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obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
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@ -444,12 +444,19 @@ config MMC_TMIO_CORE
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config MMC_TMIO
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tristate "Toshiba Mobile IO Controller (TMIO) MMC/SD function support"
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depends on MFD_TMIO || MFD_ASIC3 || MFD_SH_MOBILE_SDHI
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depends on MFD_TMIO || MFD_ASIC3
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select MMC_TMIO_CORE
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help
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This provides support for the SD/MMC cell found in TC6393XB,
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T7L66XB and also HTC ASIC3
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config MMC_SDHI
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tristate "SH-Mobile SDHI SD/SDIO controller support"
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select MMC_TMIO_CORE
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help
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This provides support for the SDHI SD/SDIO controller found in
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SuperH and ARM SH-Mobile SoCs
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config MMC_CB710
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tristate "ENE CB710 MMC/SD Interface support"
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depends on PCI
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@ -31,8 +31,11 @@ obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o
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obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o
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obj-$(CONFIG_MMC_TMIO_CORE) += tmio_mmc_core.o
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tmio_mmc_core-y := tmio_mmc_pio.o
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tmio_mmc_core-$(CONFIG_TMIO_MMC_DMA) += tmio_mmc_dma.o
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obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
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ifneq ($(CONFIG_MMC_SDHI),n)
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tmio_mmc_core-y += tmio_mmc_dma.o
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endif
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obj-$(CONFIG_MMC_SDHI) += sh_mobile_sdhi.o
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obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
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obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o
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obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
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obj-$(CONFIG_MMC_DW) += dw_mmc.o
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@ -23,51 +23,30 @@
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/mmc/host.h>
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#include <linux/mfd/core.h>
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#include <linux/mmc/sh_mobile_sdhi.h>
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#include <linux/mfd/tmio.h>
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#include <linux/mfd/sh_mobile_sdhi.h>
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#include <linux/sh_dma.h>
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#include "tmio_mmc.h"
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struct sh_mobile_sdhi {
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struct clk *clk;
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struct tmio_mmc_data mmc_data;
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struct mfd_cell cell_mmc;
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struct sh_dmae_slave param_tx;
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struct sh_dmae_slave param_rx;
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struct tmio_mmc_dma dma_priv;
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};
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static struct resource sh_mobile_sdhi_resources[] = {
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{
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.start = 0x000,
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.end = 0x1ff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = 0,
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.end = 0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct mfd_cell sh_mobile_sdhi_cell = {
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.name = "tmio-mmc",
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.num_resources = ARRAY_SIZE(sh_mobile_sdhi_resources),
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.resources = sh_mobile_sdhi_resources,
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};
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static void sh_mobile_sdhi_set_pwr(struct platform_device *tmio, int state)
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static void sh_mobile_sdhi_set_pwr(struct platform_device *pdev, int state)
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{
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struct platform_device *pdev = to_platform_device(tmio->dev.parent);
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struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
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if (p && p->set_pwr)
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p->set_pwr(pdev, state);
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}
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static int sh_mobile_sdhi_get_cd(struct platform_device *tmio)
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static int sh_mobile_sdhi_get_cd(struct platform_device *pdev)
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{
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struct platform_device *pdev = to_platform_device(tmio->dev.parent);
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struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
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if (p && p->get_cd)
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@ -81,20 +60,9 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
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struct sh_mobile_sdhi *priv;
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struct tmio_mmc_data *mmc_data;
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struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
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struct resource *mem;
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struct tmio_mmc_host *host;
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char clk_name[8];
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int ret, irq;
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mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!mem)
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dev_err(&pdev->dev, "missing MEM resource\n");
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
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dev_err(&pdev->dev, "missing IRQ resource\n");
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if (!mem || (irq < 0))
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return -EINVAL;
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int ret;
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priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
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if (priv == NULL) {
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@ -109,8 +77,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
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if (IS_ERR(priv->clk)) {
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dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
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ret = PTR_ERR(priv->clk);
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kfree(priv);
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return ret;
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goto eclkget;
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}
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clk_enable(priv->clk);
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@ -123,6 +90,15 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
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mmc_data->flags = p->tmio_flags;
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mmc_data->ocr_mask = p->tmio_ocr_mask;
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mmc_data->capabilities |= p->tmio_caps;
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if (p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) {
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priv->param_tx.slave_id = p->dma_slave_tx;
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priv->param_rx.slave_id = p->dma_slave_rx;
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priv->dma_priv.chan_priv_tx = &priv->param_tx;
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priv->dma_priv.chan_priv_rx = &priv->param_rx;
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priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
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mmc_data->dma = &priv->dma_priv;
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}
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}
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/*
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@ -136,36 +112,30 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
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*/
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mmc_data->flags |= TMIO_MMC_SDIO_IRQ;
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if (p && p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) {
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priv->param_tx.slave_id = p->dma_slave_tx;
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priv->param_rx.slave_id = p->dma_slave_rx;
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priv->dma_priv.chan_priv_tx = &priv->param_tx;
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priv->dma_priv.chan_priv_rx = &priv->param_rx;
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priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
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mmc_data->dma = &priv->dma_priv;
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}
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ret = tmio_mmc_host_probe(&host, pdev, mmc_data);
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if (ret < 0)
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goto eprobe;
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memcpy(&priv->cell_mmc, &sh_mobile_sdhi_cell, sizeof(priv->cell_mmc));
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priv->cell_mmc.mfd_data = mmc_data;
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pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
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(unsigned long)host->ctl, host->irq);
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platform_set_drvdata(pdev, priv);
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ret = mfd_add_devices(&pdev->dev, pdev->id,
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&priv->cell_mmc, 1, mem, irq);
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if (ret) {
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clk_disable(priv->clk);
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clk_put(priv->clk);
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kfree(priv);
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}
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return ret;
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eprobe:
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clk_disable(priv->clk);
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clk_put(priv->clk);
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eclkget:
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kfree(priv);
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return ret;
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}
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static int sh_mobile_sdhi_remove(struct platform_device *pdev)
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{
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struct sh_mobile_sdhi *priv = platform_get_drvdata(pdev);
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struct mmc_host *mmc = platform_get_drvdata(pdev);
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struct tmio_mmc_host *host = mmc_priv(mmc);
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struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
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mfd_remove_devices(&pdev->dev);
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tmio_mmc_host_remove(host);
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clk_disable(priv->clk);
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clk_put(priv->clk);
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kfree(priv);
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@ -198,3 +168,4 @@ module_exit(sh_mobile_sdhi_exit);
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MODULE_DESCRIPTION("SuperH Mobile SDHI driver");
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MODULE_AUTHOR("Magnus Damm");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:sh_mobile_sdhi");
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@ -120,7 +120,7 @@ static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
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local_irq_restore(*flags);
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}
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#ifdef CONFIG_TMIO_MMC_DMA
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#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE)
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void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data);
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void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata);
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void tmio_mmc_release_dma(struct tmio_mmc_host *host);
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@ -1,16 +1,7 @@
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#ifndef __SH_MOBILE_SDHI_H__
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#define __SH_MOBILE_SDHI_H__
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#ifndef MFD_SH_MOBILE_SDHI_H
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#define MFD_SH_MOBILE_SDHI_H
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#include <linux/types.h>
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/* Compatibility header - will disappear once all platforms are converted */
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#include <linux/mmc/sh_mobile_sdhi.h>
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struct sh_mobile_sdhi_info {
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int dma_slave_tx;
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int dma_slave_rx;
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unsigned long tmio_flags;
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unsigned long tmio_caps;
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u32 tmio_ocr_mask; /* available MMC voltages */
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void (*set_pwr)(struct platform_device *pdev, int state);
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int (*get_cd)(struct platform_device *pdev);
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};
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#endif /* __SH_MOBILE_SDHI_H__ */
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#endif /* MFD_SH_MOBILE_SDHI_H */
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16
include/linux/mmc/sh_mobile_sdhi.h
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16
include/linux/mmc/sh_mobile_sdhi.h
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#ifndef __SH_MOBILE_SDHI_H__
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#define __SH_MOBILE_SDHI_H__
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#include <linux/types.h>
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struct sh_mobile_sdhi_info {
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int dma_slave_tx;
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int dma_slave_rx;
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unsigned long tmio_flags;
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unsigned long tmio_caps;
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u32 tmio_ocr_mask; /* available MMC voltages */
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void (*set_pwr)(struct platform_device *pdev, int state);
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int (*get_cd)(struct platform_device *pdev);
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};
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#endif /* __SH_MOBILE_SDHI_H__ */
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