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Date: Wed, 19 Nov 2014 11:32:04 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Addy Ke <addy.ke@...k-chips.com>
Cc: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Randy Dunlap <rdunlap@...radead.org>,
"tgih.jun@...sung.com" <tgih.jun@...sung.com>,
Jaehoon Chung <jh80.chung@...sung.com>,
Chris Ball <chris@...ntf.net>,
Dinh Nguyen <dinguyen@...era.com>,
Heiko Stübner <heiko@...ech.de>,
Olof Johansson <olof@...om.net>,
Doug Anderson <dianders@...omium.org>,
Sonny Rao <sonnyrao@...omium.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-mmc <linux-mmc@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
linux-rockchip@...ts.infradead.org,
"zhenfu.fang" <zhenfu.fang@...k-chips.com>,
Eddie Cai <cf@...k-chips.com>, lintao <lintao@...k-chips.com>,
chenfen <chenfen@...k-chips.com>, zyf <zyf@...k-chips.com>,
Jianqun Xu <xjq@...k-chips.com>,
Tao Huang <huangtao@...k-chips.com>,
Chris Zhong <zyw@...k-chips.com>,
姚智情 <yzq@...k-chips.com>,
han jiang <hj@...k-chips.com>,
Kever Yang <kever.yang@...k-chips.com>,
zhangqing <zhangqing@...k-chips.com>,
Lin Huang <hl@...k-chips.com>
Subject: Re: [PATCH v4] mmc: dw_mmc: add support for the other bit of sdio interrupt
On 4 November 2014 15:03, Addy Ke <addy.ke@...k-chips.com> wrote:
> The bit of sdio interrupt is 16 in designware implementation,
> but it is 24 on Rockchip SoCs.This patch add sdio_id0 for the
> number of slot0 in the SDIO interrupt registers.
>
> Signed-off-by: Addy Ke <addy.ke@...k-chips.com>
Thanks! Applied for next.
Kind regards
Uffe
> ---
> Changes in v2:
> - rebase on http://git.linaro.org/git/people/ulf.hansson/mmc.git, next branch
> Changes in v3:
> - Remove dts for sdio_id0, just replace this with 8, suggested by Doug
> - Change to support all Rockchip Socs, suggested by Heiko
> Changes in v4:
> - use init-hook to set sdio_id0, suggested by Jaehoon
>
> drivers/mmc/host/dw_mmc-rockchip.c | 10 ++++++++++
> drivers/mmc/host/dw_mmc.c | 12 +++++++-----
> drivers/mmc/host/dw_mmc.h | 2 ++
> include/linux/mmc/dw_mmc.h | 3 +++
> 4 files changed, 22 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
> index bbb4ec3..5650ac4 100644
> --- a/drivers/mmc/host/dw_mmc-rockchip.c
> +++ b/drivers/mmc/host/dw_mmc-rockchip.c
> @@ -68,14 +68,24 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
> }
> }
>
> +static int dw_mci_rockchip_init(struct dw_mci *host)
> +{
> + /* It is slot 8 on Rockchip SoCs */
> + host->sdio_id0 = 8;
> +
> + return 0;
> +}
> +
> static const struct dw_mci_drv_data rk2928_drv_data = {
> .prepare_command = dw_mci_rockchip_prepare_command,
> + .init = dw_mci_rockchip_init,
> };
>
> static const struct dw_mci_drv_data rk3288_drv_data = {
> .prepare_command = dw_mci_rockchip_prepare_command,
> .set_ios = dw_mci_rk3288_set_ios,
> .setup_clock = dw_mci_rk3288_setup_clock,
> + .init = dw_mci_rockchip_init,
> };
>
> static const struct of_device_id dw_mci_rockchip_match[] = {
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index bb46b1b..a633b58 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -823,7 +823,7 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
>
> /* enable clock; only low power if no SDIO */
> clk_en_a = SDMMC_CLKEN_ENABLE << slot->id;
> - if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->id)))
> + if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->sdio_id)))
> clk_en_a |= SDMMC_CLKEN_LOW_PWR << slot->id;
> mci_writel(host, CLKENA, clk_en_a);
>
> @@ -1184,10 +1184,10 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
> dw_mci_disable_low_power(slot);
>
> mci_writel(host, INTMASK,
> - (int_mask | SDMMC_INT_SDIO(slot->id)));
> + (int_mask | SDMMC_INT_SDIO(slot->sdio_id)));
> } else {
> mci_writel(host, INTMASK,
> - (int_mask & ~SDMMC_INT_SDIO(slot->id)));
> + (int_mask & ~SDMMC_INT_SDIO(slot->sdio_id)));
> }
> }
>
> @@ -2056,8 +2056,9 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
> /* Handle SDIO Interrupts */
> for (i = 0; i < host->num_slots; i++) {
> struct dw_mci_slot *slot = host->slot[i];
> - if (pending & SDMMC_INT_SDIO(i)) {
> - mci_writel(host, RINTSTS, SDMMC_INT_SDIO(i));
> + if (pending & SDMMC_INT_SDIO(slot->sdio_id)) {
> + mci_writel(host, RINTSTS,
> + SDMMC_INT_SDIO(slot->sdio_id));
> mmc_signal_sdio_irq(slot->mmc);
> }
> }
> @@ -2145,6 +2146,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
>
> slot = mmc_priv(mmc);
> slot->id = id;
> + slot->sdio_id = host->sdio_id0 + id;
> slot->mmc = mmc;
> slot->host = host;
> host->slot[id] = slot;
> diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
> index 71d4995..0562f10 100644
> --- a/drivers/mmc/host/dw_mmc.h
> +++ b/drivers/mmc/host/dw_mmc.h
> @@ -214,6 +214,7 @@ extern int dw_mci_resume(struct dw_mci *host);
> * with CONFIG_MMC_CLKGATE.
> * @flags: Random state bits associated with the slot.
> * @id: Number of this slot.
> + * @sdio_id: Number of this slot in the SDIO interrupt registers.
> */
> struct dw_mci_slot {
> struct mmc_host *mmc;
> @@ -233,6 +234,7 @@ struct dw_mci_slot {
> #define DW_MMC_CARD_PRESENT 0
> #define DW_MMC_CARD_NEED_INIT 1
> int id;
> + int sdio_id;
> };
>
> struct dw_mci_tuning_data {
> diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h
> index 69d0814..72c319f 100644
> --- a/include/linux/mmc/dw_mmc.h
> +++ b/include/linux/mmc/dw_mmc.h
> @@ -96,6 +96,7 @@ struct mmc_data;
> * @quirks: Set of quirks that apply to specific versions of the IP.
> * @irq_flags: The flags to be passed to request_irq.
> * @irq: The irq value to be passed to request_irq.
> + * @sdio_id0: Number of slot0 in the SDIO interrupt registers.
> *
> * Locking
> * =======
> @@ -191,6 +192,8 @@ struct dw_mci {
> bool vqmmc_enabled;
> unsigned long irq_flags; /* IRQ flags */
> int irq;
> +
> + int sdio_id0;
> };
>
> /* DMA ops for Internal/External DMAC interface */
> --
> 1.8.3.2
>
>
--
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