target/linux/s3c24xx/patches-2.6.26/0084-fix-glamo-mci-fake-reset-opcode-in-suspend.patch.patch

   1 From f26eee35ae154c2be8a6e23f3e6a45f01f50f7a7 Mon Sep 17 00:00:00 2001
   2 From: warmcat <andy@warmcat.com>
   3 Date: Fri, 25 Jul 2008 23:06:01 +0100
   4 Subject: [PATCH] fix-glamo-mci-fake-reset-opcode-in-suspend.patch
   5
   6 ---
   7  arch/arm/mach-s3c2440/mach-gta02.c |    4 ++--
   8  drivers/mfd/glamo/glamo-core.c     |   16 +++++++++-------
   9  drivers/mfd/glamo/glamo-mci.c      |   29 +++++++++++++++++++++--------
  10  3 files changed, 32 insertions(+), 17 deletions(-)
  11
  12 diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
  13 index 750fd97..f18c8fd 100644
  14 --- a/arch/arm/mach-s3c2440/mach-gta02.c
  15 +++ b/arch/arm/mach-s3c2440/mach-gta02.c
  16 @@ -1281,6 +1281,8 @@ static void __init gta02_machine_init(void)
  17                 s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 1);
  18                 break;
  19         }
  20 +       mangle_glamo_res_by_system_rev();
  21 +       platform_device_register(&gta02_glamo_dev);
  22
  23         platform_device_register(&s3c_device_spi_acc);
  24         platform_device_register(&gta01_button_dev);
  25 @@ -1291,8 +1293,6 @@ static void __init gta02_machine_init(void)
  26         platform_device_register(&gta01_led_dev);
  27         platform_device_register(&gta02_led_dev);
  28
  29 -       mangle_glamo_res_by_system_rev();
  30 -       platform_device_register(&gta02_glamo_dev);
  31
  32         platform_device_register(&gta02_sdio_dev);
  33
  34 diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c
  35 index 2076e61..4d8e47f 100644
  36 --- a/drivers/mfd/glamo/glamo-core.c
  37 +++ b/drivers/mfd/glamo/glamo-core.c
  38 @@ -822,6 +822,8 @@ static void glamo_power(struct glamo_core *glamo,
  39  {
  40         spin_lock(&glamo->lock);
  41
  42 +       dev_dbg(&glamo->pdev->dev, "***** glamo_power -> %d\n", new_state);
  43 +
  44         switch (new_state) {
  45         case GLAMO_POWER_ON:
  46                 /* power up PLL1 and PLL2 */
  47 @@ -1026,13 +1028,6 @@ static int __init glamo_probe(struct platform_device *pdev)
  48         glamo_mci_def_pdata.glamo_irq_is_wired =
  49                                         glamo->pdata->glamo_irq_is_wired;
  50
  51 -       glamo_mmc_dev.dev.parent = &pdev->dev;
  52 -       /* we need it later to give to the engine enable and disable */
  53 -       glamo_mci_def_pdata.pglamo = glamo;
  54 -       mangle_mem_resources(glamo_mmc_dev.resource,
  55 -                            glamo_mmc_dev.num_resources, glamo->mem);
  56 -       platform_device_register(&glamo_mmc_dev);
  57 -
  58         glamo_2d_dev.dev.parent = &pdev->dev;
  59         mangle_mem_resources(glamo_2d_dev.resource,
  60                              glamo_2d_dev.num_resources, glamo->mem);
  61 @@ -1065,6 +1060,13 @@ static int __init glamo_probe(struct platform_device *pdev)
  62         glamo_spigpio_dev.dev.platform_data = glamo->pdata->spigpio_info;
  63         platform_device_register(&glamo_spigpio_dev);
  64
  65 +       glamo_mmc_dev.dev.parent = &pdev->dev;
  66 +       /* we need it later to give to the engine enable and disable */
  67 +       glamo_mci_def_pdata.pglamo = glamo;
  68 +       mangle_mem_resources(glamo_mmc_dev.resource,
  69 +                            glamo_mmc_dev.num_resources, glamo->mem);
  70 +       platform_device_register(&glamo_mmc_dev);
  71 +
  72         /* only request the generic, hostbus and memory controller MMIO */
  73         glamo->mem = request_mem_region(glamo->mem->start,
  74                                         GLAMO_REGOFS_VIDCAP, "glamo-core");
  75 diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c
  76 index bbbbe4d..d8847c5 100644
  77 --- a/drivers/mfd/glamo/glamo-mci.c
  78 +++ b/drivers/mfd/glamo/glamo-mci.c
  79 @@ -405,11 +405,11 @@ static void glamo_mci_send_request(struct mmc_host *mmc)
  80         u16 * reg_resp = (u16 *)(host->base + GLAMO_REG_MMC_CMD_RSP1);
  81         u16 status;
  82         int n;
  83 +       int timeout = 100000000;
  84
  85         if (host->suspending) {
  86 -               cmd->error = -EIO;
  87 -               if (cmd->data)
  88 -                       cmd->data->error = -EIO;
  89 +               dev_err(&host->pdev->dev, "faking cmd %d "
  90 +                       "during suspend\n", cmd->opcode);
  91                 mmc_request_done(mmc, mrq);
  92                 return;
  93         }
  94 @@ -502,10 +502,23 @@ static void glamo_mci_send_request(struct mmc_host *mmc)
  95          * our own INT# line"
  96          */
  97         if (!glamo_mci_def_pdata.pglamo->irq_works) {
  98 -               /* we have faith we will get an "interrupt"... */
  99 -               while (!(readw_dly(glamo_mci_def_pdata.pglamo->base +
 100 -                        GLAMO_REG_IRQ_STATUS) & GLAMO_IRQ_MMC))
 101 +               /*
 102 +                * we have faith we will get an "interrupt"...
 103 +                * but something insane like suspend problems can mean
 104 +                * we spin here forever, so we timeout after a LONG time
 105 +                */
 106 +               while ((!(readw_dly(glamo_mci_def_pdata.pglamo->base +
 107 +                        GLAMO_REG_IRQ_STATUS) & GLAMO_IRQ_MMC)) &&
 108 +                      (timeout--))
 109                         ;
 110 +
 111 +               if (timeout < 0) {
 112 +                       if (cmd->data->error)
 113 +                               cmd->data->error = -ETIMEDOUT;
 114 +                       dev_err(&host->pdev->dev, "Payload timeout\n");
 115 +                       return;
 116 +               }
 117 +
 118                 /* yay we are an interrupt controller! -- call the ISR */
 119                 glamo_mci_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC),
 120                               irq_desc + IRQ_GLAMO(GLAMO_IRQIDX_MMC));
 121 @@ -529,6 +542,7 @@ static void glamo_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 122
 123  static void glamo_mci_reset(struct glamo_mci_host *host)
 124  {
 125 +       dev_dbg(&host->pdev->dev, "******* glamo_mci_reset\n");
 126         /* reset MMC controller */
 127         writew_dly(GLAMO_CLOCK_MMC_RESET | GLAMO_CLOCK_MMC_DG_TCLK |
 128                    GLAMO_CLOCK_MMC_EN_TCLK | GLAMO_CLOCK_MMC_DG_M9CLK |
 129 @@ -803,8 +817,7 @@ static int glamo_mci_suspend(struct platform_device *dev, pm_message_t state)
 130         struct glamo_mci_host   *host = mmc_priv(mmc);
 131
 132         host->suspending++;
 133 -
 134 -       return  mmc_suspend_host(mmc, state);
 135 +       return mmc_suspend_host(mmc, state);
 136  }
 137
 138  static int glamo_mci_resume(struct platform_device *dev)
 139 --
 140 1.5.6.3
 141