141 lines
5 KiB
Diff
Executable file
141 lines
5 KiB
Diff
Executable file
From f26eee35ae154c2be8a6e23f3e6a45f01f50f7a7 Mon Sep 17 00:00:00 2001
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From: warmcat <andy@warmcat.com>
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Date: Fri, 25 Jul 2008 23:06:01 +0100
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Subject: [PATCH] fix-glamo-mci-fake-reset-opcode-in-suspend.patch
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---
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arch/arm/mach-s3c2440/mach-gta02.c | 4 ++--
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drivers/mfd/glamo/glamo-core.c | 16 +++++++++-------
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drivers/mfd/glamo/glamo-mci.c | 29 +++++++++++++++++++++--------
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3 files changed, 32 insertions(+), 17 deletions(-)
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diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
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index 750fd97..f18c8fd 100644
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--- a/arch/arm/mach-s3c2440/mach-gta02.c
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+++ b/arch/arm/mach-s3c2440/mach-gta02.c
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@@ -1281,6 +1281,8 @@ static void __init gta02_machine_init(void)
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s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 1);
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break;
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}
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+ mangle_glamo_res_by_system_rev();
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+ platform_device_register(>a02_glamo_dev);
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platform_device_register(&s3c_device_spi_acc);
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platform_device_register(>a01_button_dev);
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@@ -1291,8 +1293,6 @@ static void __init gta02_machine_init(void)
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platform_device_register(>a01_led_dev);
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platform_device_register(>a02_led_dev);
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- mangle_glamo_res_by_system_rev();
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- platform_device_register(>a02_glamo_dev);
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platform_device_register(>a02_sdio_dev);
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diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c
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index 2076e61..4d8e47f 100644
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--- a/drivers/mfd/glamo/glamo-core.c
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+++ b/drivers/mfd/glamo/glamo-core.c
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@@ -822,6 +822,8 @@ static void glamo_power(struct glamo_core *glamo,
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{
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spin_lock(&glamo->lock);
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+ dev_dbg(&glamo->pdev->dev, "***** glamo_power -> %d\n", new_state);
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+
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switch (new_state) {
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case GLAMO_POWER_ON:
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/* power up PLL1 and PLL2 */
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@@ -1026,13 +1028,6 @@ static int __init glamo_probe(struct platform_device *pdev)
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glamo_mci_def_pdata.glamo_irq_is_wired =
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glamo->pdata->glamo_irq_is_wired;
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- glamo_mmc_dev.dev.parent = &pdev->dev;
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- /* we need it later to give to the engine enable and disable */
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- glamo_mci_def_pdata.pglamo = glamo;
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- mangle_mem_resources(glamo_mmc_dev.resource,
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- glamo_mmc_dev.num_resources, glamo->mem);
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- platform_device_register(&glamo_mmc_dev);
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-
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glamo_2d_dev.dev.parent = &pdev->dev;
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mangle_mem_resources(glamo_2d_dev.resource,
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glamo_2d_dev.num_resources, glamo->mem);
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@@ -1065,6 +1060,13 @@ static int __init glamo_probe(struct platform_device *pdev)
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glamo_spigpio_dev.dev.platform_data = glamo->pdata->spigpio_info;
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platform_device_register(&glamo_spigpio_dev);
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+ glamo_mmc_dev.dev.parent = &pdev->dev;
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+ /* we need it later to give to the engine enable and disable */
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+ glamo_mci_def_pdata.pglamo = glamo;
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+ mangle_mem_resources(glamo_mmc_dev.resource,
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+ glamo_mmc_dev.num_resources, glamo->mem);
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+ platform_device_register(&glamo_mmc_dev);
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+
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/* only request the generic, hostbus and memory controller MMIO */
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glamo->mem = request_mem_region(glamo->mem->start,
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GLAMO_REGOFS_VIDCAP, "glamo-core");
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diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c
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index bbbbe4d..d8847c5 100644
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--- a/drivers/mfd/glamo/glamo-mci.c
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+++ b/drivers/mfd/glamo/glamo-mci.c
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@@ -405,11 +405,11 @@ static void glamo_mci_send_request(struct mmc_host *mmc)
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u16 * reg_resp = (u16 *)(host->base + GLAMO_REG_MMC_CMD_RSP1);
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u16 status;
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int n;
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+ int timeout = 100000000;
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if (host->suspending) {
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- cmd->error = -EIO;
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- if (cmd->data)
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- cmd->data->error = -EIO;
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+ dev_err(&host->pdev->dev, "faking cmd %d "
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+ "during suspend\n", cmd->opcode);
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mmc_request_done(mmc, mrq);
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return;
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}
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@@ -502,10 +502,23 @@ static void glamo_mci_send_request(struct mmc_host *mmc)
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* our own INT# line"
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*/
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if (!glamo_mci_def_pdata.pglamo->irq_works) {
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- /* we have faith we will get an "interrupt"... */
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- while (!(readw_dly(glamo_mci_def_pdata.pglamo->base +
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- GLAMO_REG_IRQ_STATUS) & GLAMO_IRQ_MMC))
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+ /*
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+ * we have faith we will get an "interrupt"...
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+ * but something insane like suspend problems can mean
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+ * we spin here forever, so we timeout after a LONG time
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+ */
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+ while ((!(readw_dly(glamo_mci_def_pdata.pglamo->base +
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+ GLAMO_REG_IRQ_STATUS) & GLAMO_IRQ_MMC)) &&
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+ (timeout--))
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;
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+
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+ if (timeout < 0) {
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+ if (cmd->data->error)
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+ cmd->data->error = -ETIMEDOUT;
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+ dev_err(&host->pdev->dev, "Payload timeout\n");
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+ return;
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+ }
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+
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/* yay we are an interrupt controller! -- call the ISR */
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glamo_mci_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC),
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irq_desc + IRQ_GLAMO(GLAMO_IRQIDX_MMC));
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@@ -529,6 +542,7 @@ static void glamo_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
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static void glamo_mci_reset(struct glamo_mci_host *host)
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{
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+ dev_dbg(&host->pdev->dev, "******* glamo_mci_reset\n");
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/* reset MMC controller */
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writew_dly(GLAMO_CLOCK_MMC_RESET | GLAMO_CLOCK_MMC_DG_TCLK |
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GLAMO_CLOCK_MMC_EN_TCLK | GLAMO_CLOCK_MMC_DG_M9CLK |
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@@ -803,8 +817,7 @@ static int glamo_mci_suspend(struct platform_device *dev, pm_message_t state)
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struct glamo_mci_host *host = mmc_priv(mmc);
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host->suspending++;
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-
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- return mmc_suspend_host(mmc, state);
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+ return mmc_suspend_host(mmc, state);
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}
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static int glamo_mci_resume(struct platform_device *dev)
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--
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1.5.6.3
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