From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759195AbaJ3LLi (ORCPT ); Thu, 30 Oct 2014 07:11:38 -0400 Received: from mail-qc0-f177.google.com ([209.85.216.177]:54250 "EHLO mail-qc0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758559AbaJ3LLf (ORCPT ); Thu, 30 Oct 2014 07:11:35 -0400 MIME-Version: 1.0 In-Reply-To: <1414666240-16782-1-git-send-email-addy.ke@rock-chips.com> References: <1414635679-12565-1-git-send-email-addy.ke@rock-chips.com> <1414666240-16782-1-git-send-email-addy.ke@rock-chips.com> Date: Thu, 30 Oct 2014 12:11:34 +0100 Message-ID: Subject: Re: [PATCH] mmc: dw_mmc: add support for the other bit of sdio interrupt From: Ulf Hansson To: Addy Ke Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Randy Dunlap , "tgih.jun@samsung.com" , Jaehoon Chung , Chris Ball , Dinh Nguyen , =?UTF-8?Q?Heiko_St=C3=BCbner?= , Olof Johansson , Doug Anderson , Sonny Rao , "devicetree@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , linux-mmc , "linux-arm-kernel@lists.infradead.org" , linux-rockchip@lists.infradead.org, "zhenfu.fang" , Eddie Cai , lintao , chenfen , zyf , Jianqun Xu , Tao Huang , Chris Zhong , =?UTF-8?B?5aea5pm65oOF?= , han jiang , Kever Yang , zhangqing , Lin Huang Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 30 October 2014 11:50, Addy Ke wrote: > The bit of sdio interrupt is 16 in designware implementation, > but it is 24 in RK3288. This patch add sdio_id0 for the number > of slot0 in the SDIO interrupt registers, which can be set in > platform DT table, such as: > - rockchip,sdio-interrupt-slot0 = <8>; No, this shouldn't be information in DT. Instead this can be kept in the driver, depending on what version of the mmc controller that is being used. Right!? Kind regards Uffe > > Signed-off-by: Addy Ke > --- > drivers/mmc/host/dw_mmc-rockchip.c | 13 +++++++++++++ > drivers/mmc/host/dw_mmc.c | 12 +++++++----- > drivers/mmc/host/dw_mmc.h | 2 ++ > include/linux/mmc/dw_mmc.h | 3 +++ > 4 files changed, 25 insertions(+), 5 deletions(-) > > diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c > index f0c2cb1..54655e7 100644 > --- a/drivers/mmc/host/dw_mmc-rockchip.c > +++ b/drivers/mmc/host/dw_mmc-rockchip.c > @@ -65,6 +65,18 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios) > } > } > > +static int dw_mci_rk3288_parse_dt(struct dw_mci *host) > +{ > + struct device_node *np = host->dev->of_node; > + int sdio_id0; > + > + if (!of_property_read_u32(np, "rockchip,sdio-interrupt-slot0", > + &sdio_id0)) > + host->sdio_id0 = sdio_id0; > + > + return 0; > +} > + > static const struct dw_mci_drv_data rk2928_drv_data = { > .prepare_command = dw_mci_rockchip_prepare_command, > }; > @@ -73,6 +85,7 @@ 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, > + .parse_dt = dw_mci_rk3288_parse_dt, > }; > > 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 69f0cc6..2ea7467 100644 > --- a/drivers/mmc/host/dw_mmc.c > +++ b/drivers/mmc/host/dw_mmc.c > @@ -819,7 +819,7 @@ 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); > > @@ -1180,10 +1180,10 @@ 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))); > } > } > > @@ -2035,8 +2035,9 @@ 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); > } > } > @@ -2206,6 +2207,7 @@ 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 01b99e8..3e966a9 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. > * @last_detect_state: Most recently observed card detect state. > */ > struct dw_mci_slot { > @@ -234,6 +235,7 @@ struct dw_mci_slot { > #define DW_MMC_CARD_PRESENT 0 > #define DW_MMC_CARD_NEED_INIT 1 > int id; > + int sdio_id; > int last_detect_state; > }; > > diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h > index 0013669..4c0d3f2 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 > * ======= > @@ -193,6 +194,8 @@ 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 > >