From 86a93317ed71f9ad8bca7baff12930c47c235f80 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 30 Jul 2016 16:25:45 +0200 Subject: [PATCH] mmc: sunxi: Introduce a sunxi_mmc_cfg struct Create a struct to hold the various model / compatible string dependend settings. Signed-off-by: Hans de Goede Acked-by: Maxime Ripard Signed-off-by: Ulf Hansson --- drivers/mmc/host/sunxi-mmc.c | 77 ++++++++++++++++++++++++++------------------ 1 file changed, 45 insertions(+), 32 deletions(-) diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index d7dadb5..84bbf43 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -229,9 +229,15 @@ struct sunxi_idma_des { u32 buf_addr_ptr2; }; +struct sunxi_mmc_cfg { + u32 idma_des_size_bits; + const struct sunxi_mmc_clk_delay *clk_delays; +}; + struct sunxi_mmc_host { struct mmc_host *mmc; struct reset_control *reset; + const struct sunxi_mmc_cfg *cfg; /* IO mapping base */ void __iomem *reg_base; @@ -241,7 +247,6 @@ struct sunxi_mmc_host { struct clk *clk_mmc; struct clk *clk_sample; struct clk *clk_output; - const struct sunxi_mmc_clk_delay *clk_delays; /* irq */ spinlock_t lock; @@ -250,7 +255,6 @@ struct sunxi_mmc_host { u32 sdio_imask; /* dma */ - u32 idma_des_size_bits; dma_addr_t sg_dma; void *sg_cpu; bool wait_dma; @@ -322,7 +326,7 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, { struct sunxi_idma_des *pdes = (struct sunxi_idma_des *)host->sg_cpu; dma_addr_t next_desc = host->sg_dma; - int i, max_len = (1 << host->idma_des_size_bits); + int i, max_len = (1 << host->cfg->idma_des_size_bits); for (i = 0; i < data->sg_len; i++) { pdes[i].config = SDXC_IDMAC_DES0_CH | SDXC_IDMAC_DES0_OWN | @@ -656,6 +660,7 @@ static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en) static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, struct mmc_ios *ios) { + const struct sunxi_mmc_clk_delay *clk_delays = host->cfg->clk_delays; u32 rate, oclk_dly, rval, sclk_dly; u32 clock = ios->clock; int ret; @@ -694,22 +699,22 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, /* determine delays */ if (rate <= 400000) { - oclk_dly = host->clk_delays[SDXC_CLK_400K].output; - sclk_dly = host->clk_delays[SDXC_CLK_400K].sample; + oclk_dly = clk_delays[SDXC_CLK_400K].output; + sclk_dly = clk_delays[SDXC_CLK_400K].sample; } else if (rate <= 25000000) { - oclk_dly = host->clk_delays[SDXC_CLK_25M].output; - sclk_dly = host->clk_delays[SDXC_CLK_25M].sample; + oclk_dly = clk_delays[SDXC_CLK_25M].output; + sclk_dly = clk_delays[SDXC_CLK_25M].sample; } else if (rate <= 52000000) { if (ios->timing != MMC_TIMING_UHS_DDR50 && ios->timing != MMC_TIMING_MMC_DDR52) { - oclk_dly = host->clk_delays[SDXC_CLK_50M].output; - sclk_dly = host->clk_delays[SDXC_CLK_50M].sample; + oclk_dly = clk_delays[SDXC_CLK_50M].output; + sclk_dly = clk_delays[SDXC_CLK_50M].sample; } else if (ios->bus_width == MMC_BUS_WIDTH_8) { - oclk_dly = host->clk_delays[SDXC_CLK_50M_DDR_8BIT].output; - sclk_dly = host->clk_delays[SDXC_CLK_50M_DDR_8BIT].sample; + oclk_dly = clk_delays[SDXC_CLK_50M_DDR_8BIT].output; + sclk_dly = clk_delays[SDXC_CLK_50M_DDR_8BIT].sample; } else { - oclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].output; - sclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].sample; + oclk_dly = clk_delays[SDXC_CLK_50M_DDR].output; + sclk_dly = clk_delays[SDXC_CLK_50M_DDR].sample; } } else { return -EINVAL; @@ -938,14 +943,6 @@ static int sunxi_mmc_card_busy(struct mmc_host *mmc) return !!(mmc_readl(host, REG_STAS) & SDXC_CARD_DATA_BUSY); } -static const struct of_device_id sunxi_mmc_of_match[] = { - { .compatible = "allwinner,sun4i-a10-mmc", }, - { .compatible = "allwinner,sun5i-a13-mmc", }, - { .compatible = "allwinner,sun9i-a80-mmc", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); - static struct mmc_host_ops sunxi_mmc_ops = { .request = sunxi_mmc_request, .set_ios = sunxi_mmc_set_ios, @@ -974,21 +971,37 @@ static const struct sunxi_mmc_clk_delay sun9i_mmc_clk_delays[] = { [SDXC_CLK_50M_DDR_8BIT] = { .output = 72, .sample = 72 }, }; +static const struct sunxi_mmc_cfg sun4i_a10_cfg = { + .idma_des_size_bits = 13, + .clk_delays = sunxi_mmc_clk_delays, +}; + +static const struct sunxi_mmc_cfg sun5i_a13_cfg = { + .idma_des_size_bits = 16, + .clk_delays = sunxi_mmc_clk_delays, +}; + +static const struct sunxi_mmc_cfg sun9i_a80_cfg = { + .idma_des_size_bits = 16, + .clk_delays = sun9i_mmc_clk_delays, +}; + +static const struct of_device_id sunxi_mmc_of_match[] = { + { .compatible = "allwinner,sun4i-a10-mmc", .data = &sun4i_a10_cfg }, + { .compatible = "allwinner,sun5i-a13-mmc", .data = &sun5i_a13_cfg }, + { .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); + static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; int ret; - if (of_device_is_compatible(np, "allwinner,sun4i-a10-mmc")) - host->idma_des_size_bits = 13; - else - host->idma_des_size_bits = 16; - - if (of_device_is_compatible(np, "allwinner,sun9i-a80-mmc")) - host->clk_delays = sun9i_mmc_clk_delays; - else - host->clk_delays = sunxi_mmc_clk_delays; + host->cfg = of_device_get_match_data(&pdev->dev); + if (!host->cfg) + return -EINVAL; ret = mmc_regulator_get_supply(host->mmc); if (ret) { @@ -1120,7 +1133,7 @@ static int sunxi_mmc_probe(struct platform_device *pdev) mmc->max_blk_count = 8192; mmc->max_blk_size = 4096; mmc->max_segs = PAGE_SIZE / sizeof(struct sunxi_idma_des); - mmc->max_seg_size = (1 << host->idma_des_size_bits); + mmc->max_seg_size = (1 << host->cfg->idma_des_size_bits); mmc->max_req_size = mmc->max_seg_size * mmc->max_segs; /* 400kHz ~ 52MHz */ mmc->f_min = 400000; -- 2.7.4