[PATCH 02/10] mmc: mxs-mmc: let ssp_is_old take host as parameter
Marek Vasut
marex at denx.de
Mon May 7 19:43:49 EDT 2012
Dear Shawn Guo,
> Let macro ssp_is_old take host as parameter to make the code easy
> to read.
>
> Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
> ---
> drivers/mmc/host/mxs-mmc.c | 59
> ++++++++++++++++++++++--------------------- 1 files changed, 30
> insertions(+), 29 deletions(-)
>
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 2ea5361..13907e4 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -51,7 +51,7 @@
> #define MXS_MMC_DETECT_TIMEOUT (HZ/2)
>
> #define SSP_VERSION_LATEST 4
> -#define ssp_is_old() (host->version < SSP_VERSION_LATEST)
> +#define ssp_is_old(host) (host->version < SSP_VERSION_LATEST)
(host)->version ... to make the macro safer.
>
> /* SSP registers */
> #define HW_SSP_CTRL0 0x000
> @@ -86,14 +86,14 @@
> #define BM_SSP_BLOCK_SIZE_BLOCK_COUNT (0xffffff << 4)
> #define BP_SSP_BLOCK_SIZE_BLOCK_SIZE (0)
> #define BM_SSP_BLOCK_SIZE_BLOCK_SIZE (0xf)
> -#define HW_SSP_TIMING (ssp_is_old() ? 0x050 :
0x070)
> +#define HW_SSP_TIMING(h) (ssp_is_old(h) ? 0x050 : 0x070)
> #define BP_SSP_TIMING_TIMEOUT (16)
> #define BM_SSP_TIMING_TIMEOUT (0xffff << 16)
> #define BP_SSP_TIMING_CLOCK_DIVIDE (8)
> #define BM_SSP_TIMING_CLOCK_DIVIDE (0xff << 8)
> #define BP_SSP_TIMING_CLOCK_RATE (0)
> #define BM_SSP_TIMING_CLOCK_RATE (0xff)
> -#define HW_SSP_CTRL1 (ssp_is_old() ? 0x060 : 0x080)
> +#define HW_SSP_CTRL1(h) (ssp_is_old(h) ? 0x060 :
0x080)
> #define BM_SSP_CTRL1_SDIO_IRQ (1 << 31)
> #define BM_SSP_CTRL1_SDIO_IRQ_EN (1 << 30)
> #define BM_SSP_CTRL1_RESP_ERR_IRQ (1 << 29)
> @@ -116,11 +116,11 @@
> #define BM_SSP_CTRL1_WORD_LENGTH (0xf << 4)
> #define BP_SSP_CTRL1_SSP_MODE (0)
> #define BM_SSP_CTRL1_SSP_MODE (0xf)
> -#define HW_SSP_SDRESP0 (ssp_is_old() ? 0x080 :
0x0a0)
> -#define HW_SSP_SDRESP1 (ssp_is_old() ? 0x090 :
0x0b0)
> -#define HW_SSP_SDRESP2 (ssp_is_old() ? 0x0a0 :
0x0c0)
> -#define HW_SSP_SDRESP3 (ssp_is_old() ? 0x0b0 :
0x0d0)
> -#define HW_SSP_STATUS (ssp_is_old() ? 0x0c0 :
0x100)
> +#define HW_SSP_SDRESP0(h) (ssp_is_old(h) ? 0x080 : 0x0a0)
> +#define HW_SSP_SDRESP1(h) (ssp_is_old(h) ? 0x090 : 0x0b0)
> +#define HW_SSP_SDRESP2(h) (ssp_is_old(h) ? 0x0a0 : 0x0c0)
> +#define HW_SSP_SDRESP3(h) (ssp_is_old(h) ? 0x0b0 : 0x0d0)
> +#define HW_SSP_STATUS(h) (ssp_is_old(h) ? 0x0c0 : 0x100)
> #define BM_SSP_STATUS_CARD_DETECT (1 << 28)
> #define BM_SSP_STATUS_SDIO_IRQ (1 << 17)
> #define HW_SSP_VERSION (cpu_is_mx23() ? 0x110 :
0x130)
> @@ -183,7 +183,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
> {
> struct mxs_mmc_host *host = mmc_priv(mmc);
>
> - return !(readl(host->base + HW_SSP_STATUS) &
> + return !(readl(host->base + HW_SSP_STATUS(host)) &
> BM_SSP_STATUS_CARD_DETECT);
> }
>
> @@ -207,7 +207,7 @@ static void mxs_mmc_reset(struct mxs_mmc_host *host)
> writel(BF_SSP(0xffff, TIMING_TIMEOUT) |
> BF_SSP(2, TIMING_CLOCK_DIVIDE) |
> BF_SSP(0, TIMING_CLOCK_RATE),
> - host->base + HW_SSP_TIMING);
> + host->base + HW_SSP_TIMING(host));
>
> if (host->sdio_irq_en) {
> ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
> @@ -215,7 +215,7 @@ static void mxs_mmc_reset(struct mxs_mmc_host *host)
> }
>
> writel(ctrl0, host->base + HW_SSP_CTRL0);
> - writel(ctrl1, host->base + HW_SSP_CTRL1);
> + writel(ctrl1, host->base + HW_SSP_CTRL1(host));
> }
>
> static void mxs_mmc_start_cmd(struct mxs_mmc_host *host,
> @@ -229,12 +229,12 @@ static void mxs_mmc_request_done(struct mxs_mmc_host
> *host)
>
> if (mmc_resp_type(cmd) & MMC_RSP_PRESENT) {
> if (mmc_resp_type(cmd) & MMC_RSP_136) {
> - cmd->resp[3] = readl(host->base + HW_SSP_SDRESP0);
> - cmd->resp[2] = readl(host->base + HW_SSP_SDRESP1);
> - cmd->resp[1] = readl(host->base + HW_SSP_SDRESP2);
> - cmd->resp[0] = readl(host->base + HW_SSP_SDRESP3);
> + cmd->resp[3] = readl(host->base + HW_SSP_SDRESP0(host));
> + cmd->resp[2] = readl(host->base + HW_SSP_SDRESP1(host));
> + cmd->resp[1] = readl(host->base + HW_SSP_SDRESP2(host));
> + cmd->resp[0] = readl(host->base + HW_SSP_SDRESP3(host));
> } else {
> - cmd->resp[0] = readl(host->base + HW_SSP_SDRESP0);
> + cmd->resp[0] = readl(host->base + HW_SSP_SDRESP0(host));
> }
> }
>
> @@ -277,11 +277,11 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void
> *dev_id)
>
> spin_lock(&host->lock);
>
> - stat = readl(host->base + HW_SSP_CTRL1);
> + stat = readl(host->base + HW_SSP_CTRL1(host));
> writel(stat & MXS_MMC_IRQ_BITS,
> - host->base + HW_SSP_CTRL1 + STMP_OFFSET_REG_CLR);
> + host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_CLR);
>
> - if ((stat & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN))
> + if ((sta & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN))
^ s/sta/stat/ ... did you try compiling this at all ? :-)
> mmc_signal_sdio_irq(host->mmc);
>
> spin_unlock(&host->lock);
> @@ -485,7 +485,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
> blocks = 1;
>
> /* xfer count, block size and count need to be set differently */
> - if (ssp_is_old()) {
> + if (ssp_is_old(host)) {
> ctrl0 |= BF_SSP(data_size, CTRL0_XFER_COUNT);
> cmd0 |= BF_SSP(log2_blksz, CMD0_BLOCK_SIZE) |
> BF_SSP(blocks - 1, CMD0_BLOCK_COUNT);
> @@ -509,10 +509,10 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
>
> /* set the timeout count */
> timeout = mxs_ns_to_ssp_ticks(host->clk_rate, data->timeout_ns);
> - val = readl(host->base + HW_SSP_TIMING);
> + val = readl(host->base + HW_SSP_TIMING(host));
> val &= ~(BM_SSP_TIMING_TIMEOUT);
> val |= BF_SSP(timeout, TIMING_TIMEOUT);
> - writel(val, host->base + HW_SSP_TIMING);
> + writel(val, host->base + HW_SSP_TIMING(host));
>
> /* pio */
> host->ssp_pio_words[0] = ctrl0;
> @@ -598,11 +598,11 @@ static void mxs_mmc_set_clk_rate(struct mxs_mmc_host
> *host, unsigned int rate)
>
> ssp_sck = ssp_clk / clock_divide / (1 + clock_rate);
>
> - val = readl(host->base + HW_SSP_TIMING);
> + val = readl(host->base + HW_SSP_TIMING(host));
> val &= ~(BM_SSP_TIMING_CLOCK_DIVIDE | BM_SSP_TIMING_CLOCK_RATE);
> val |= BF_SSP(clock_divide, TIMING_CLOCK_DIVIDE);
> val |= BF_SSP(clock_rate, TIMING_CLOCK_RATE);
> - writel(val, host->base + HW_SSP_TIMING);
> + writel(val, host->base + HW_SSP_TIMING(host));
>
> host->clk_rate = ssp_sck;
>
> @@ -639,16 +639,17 @@ static void mxs_mmc_enable_sdio_irq(struct mmc_host
> *mmc, int enable) writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
> host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_SET);
> writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
> - host->base + HW_SSP_CTRL1 + STMP_OFFSET_REG_SET);
> + host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_SET);
>
> - if (readl(host->base + HW_SSP_STATUS) & BM_SSP_STATUS_SDIO_IRQ)
> + if (readl(host->base + HW_SSP_STATUS(host)) &
> + BM_SSP_STATUS_SDIO_IRQ)
> mmc_signal_sdio_irq(host->mmc);
>
> } else {
> writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
> host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
> writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
> - host->base + HW_SSP_CTRL1 + STMP_OFFSET_REG_CLR);
> + host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_CLR);
> }
>
> spin_unlock_irqrestore(&host->lock, flags);
> @@ -765,8 +766,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
>
> mmc->max_segs = 52;
> mmc->max_blk_size = 1 << 0xf;
> - mmc->max_blk_count = (ssp_is_old()) ? 0xff : 0xffffff;
> - mmc->max_req_size = (ssp_is_old()) ? 0xffff : 0xffffffff;
> + mmc->max_blk_count = (ssp_is_old(host)) ? 0xff : 0xffffff;
> + mmc->max_req_size = (ssp_is_old(host)) ? 0xffff : 0xffffffff;
> mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev);
>
> platform_set_drvdata(pdev, mmc);
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