mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
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182 lines
6.4 KiB
Diff
182 lines
6.4 KiB
Diff
From 467a8c6aba68b033b95538419e09358ce0d99694 Mon Sep 17 00:00:00 2001
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From: Ashokkumar G <0xfee1dead.sa@gmail.com>
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Date: Mon, 26 Jan 2015 11:40:41 -0700
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Subject: [PATCH 6/8] mmp:mmc: adding sdhc support for pxa168 based gplugd
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Fixing can't talk to controller for sdhci PXAV2
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1. Fixing can't talk to controller for 8bus cycles at lowest speed
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2. Changing clock name from PXA-SDHCLK to NULL
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3. Adding MACH_GPLUGD dependency for SDHCI_PXAV2, SDHCI_IO_ACCESSORIES
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Signed-off-by: Ashokkumar G <0xfee1dead.sa@gmail.com>
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---
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arch/arm/mach-mmp/Kconfig | 1 +
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arch/arm/mach-mmp/gplugd.c | 8 ++++++++
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arch/arm/mach-mmp/include/mach/pxa168.h | 21 ++++++++++++++++++++-
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arch/arm/mach-mmp/pxa168.c | 4 ++++
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drivers/mmc/host/Kconfig | 4 +++-
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drivers/mmc/host/sdhci-pxav2.c | 19 ++++++++++++++++++-
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6 files changed, 54 insertions(+), 3 deletions(-)
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diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig
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index ebdba87..5843def 100644
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--- a/arch/arm/mach-mmp/Kconfig
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+++ b/arch/arm/mach-mmp/Kconfig
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@@ -80,6 +80,7 @@ config MACH_TETON_BGA
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config MACH_GPLUGD
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bool "Marvell's PXA168 GuruPlug Display (gplugD) Board"
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select CPU_PXA168
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+ select MMC
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help
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Say 'Y' here if you want to support the Marvell PXA168-based
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GuruPlug Display (gplugD) Board
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diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
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index 2981c88..ba4ce4e 100644
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--- a/arch/arm/mach-mmp/gplugd.c
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+++ b/arch/arm/mach-mmp/gplugd.c
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@@ -12,6 +12,7 @@
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/gpio-pxa.h>
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+#include <linux/mmc/sdhci.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/pxa2xx_spi.h>
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@@ -148,6 +149,10 @@ static struct i2c_board_info gplugd_i2c_board_info[] = {
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}
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};
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+struct sdhci_pxa_platdata gplugd_sdh_platdata = {
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+ .quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_BUSY_IRQ | SDHCI_QUIRK_32BIT_DMA_SIZE,
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+};
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+
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static void __init select_disp_freq(void)
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{
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/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
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@@ -332,6 +337,9 @@ static void __init gplugd_init(void)
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pxa168_add_ssp(2);
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+ pxa168_add_sdh(1, &gplugd_sdh_platdata);
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+ pxa168_add_sdh(2, &gplugd_sdh_platdata);
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+
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pxa168_add_eth(&gplugd_eth_platform_data);
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}
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diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h
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index a83ba7c..def8f46 100644
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--- a/arch/arm/mach-mmp/include/mach/pxa168.h
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+++ b/arch/arm/mach-mmp/include/mach/pxa168.h
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@@ -17,6 +17,7 @@ extern void pxa168_clear_keypad_wakeup(void);
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#include <linux/platform_data/keypad-pxa27x.h>
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#include <mach/cputype.h>
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#include <linux/pxa168_eth.h>
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+#include <linux/platform_data/pxa_sdhci.h>
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#include <linux/platform_data/mv_usb.h>
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extern struct pxa_device_desc pxa168_device_uart1;
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@@ -37,7 +38,10 @@ extern struct pxa_device_desc pxa168_device_nand;
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extern struct pxa_device_desc pxa168_device_fb;
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extern struct pxa_device_desc pxa168_device_keypad;
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extern struct pxa_device_desc pxa168_device_eth;
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-
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+extern struct pxa_device_desc pxa168_device_sdh1;
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+extern struct pxa_device_desc pxa168_device_sdh2;
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+extern struct pxa_device_desc pxa168_device_sdh3;
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+extern struct pxa_device_desc pxa168_device_sdh4;
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/* pdata can be NULL */
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extern int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata);
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@@ -134,4 +138,19 @@ static inline int pxa168_add_eth(struct pxa168_eth_platform_data *data)
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{
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return pxa_register_device(&pxa168_device_eth, data, sizeof(*data));
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}
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+
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+static inline int pxa168_add_sdh(int id, struct sdhci_pxa_platdata *data)
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+{
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+ struct pxa_device_desc *d = NULL;
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+
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+ switch (id) {
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+ case 1: d = &pxa168_device_sdh1; break;
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+ case 2: d = &pxa168_device_sdh2; break;
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+ case 3: d = &pxa168_device_sdh3; break;
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+ case 4: d = &pxa168_device_sdh4; break;
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+ default:
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+ return -EINVAL;
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+ }
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+ return pxa_register_device(d, data, sizeof(*data));
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+}
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#endif /* __ASM_MACH_PXA168_H */
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diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
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index 144e997..e7dee43 100644
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--- a/arch/arm/mach-mmp/pxa168.c
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+++ b/arch/arm/mach-mmp/pxa168.c
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@@ -110,6 +110,10 @@ PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
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PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
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PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
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PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
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+PXA168_DEVICE(sdh1, "sdhci-pxav2", 0, SDH1, 0xd4280000, 0x100);
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+PXA168_DEVICE(sdh2, "sdhci-pxav2", 1, SDH1, 0xd4281000, 0x100);
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+PXA168_DEVICE(sdh3, "sdhci-pxav2", 2, SDH2, 0xd427e000, 0x100);
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+PXA168_DEVICE(sdh4, "sdhci-pxav2", 3, SDH2, 0xd427f000, 0x100);
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struct resource pxa168_resource_gpio[] = {
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{
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diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
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index 1386065..02f8e4d 100644
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--- a/drivers/mmc/host/Kconfig
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+++ b/drivers/mmc/host/Kconfig
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@@ -240,7 +240,9 @@ config MMC_SDHCI_PXAV2
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tristate "Marvell PXA9XX SD Host Controller support (PXAV2)"
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depends on CLKDEV_LOOKUP
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depends on MMC_SDHCI_PLTFM
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- default CPU_PXA910
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+ select MMC_SDHCI_IO_ACCESSORS if MACH_GPLUGD
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+ default y if (CPU_PXA910 || MACH_GPLUGD)
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+
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help
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This selects the Marvell(R) PXAV2 SD Host Controller.
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If you have a PXA9XX platform with SD Host Controller
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diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
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index b4c23e9..f0f36c9 100644
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--- a/drivers/mmc/host/sdhci-pxav2.c
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+++ b/drivers/mmc/host/sdhci-pxav2.c
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@@ -111,7 +111,24 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width)
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writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
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}
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+/*
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+ * we cannot talk to controller for 8 bus cycles according to sdio spec
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+ * at lowest speed this is 100,000 HZ per cycle or 800,000 cycles
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+ * which is quite a LONG TIME on a fast cpu -- so delay if needed
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+ */
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+static inline u16 pxa168_readw(struct sdhci_host *host, int reg)
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+{
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+ u32 temp;
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+ if (reg == SDHCI_HOST_VERSION) {
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+ temp = readl (host->ioaddr + SDHCI_HOST_VERSION - 2) >> 16;
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+ return temp & 0xffff;
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+ }
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+
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+ return readw(host->ioaddr + reg);
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+}
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+
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static const struct sdhci_ops pxav2_sdhci_ops = {
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+ .read_w = &pxa168_readw,
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.set_clock = sdhci_set_clock,
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.get_max_clock = sdhci_pltfm_clk_get_max_clock,
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.set_bus_width = pxav2_mmc_set_bus_width,
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@@ -185,7 +202,7 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
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pltfm_host = sdhci_priv(host);
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pltfm_host->priv = pxa;
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- clk = clk_get(dev, "PXA-SDHCLK");
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+ clk = clk_get(dev, "NULL");
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if (IS_ERR(clk)) {
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dev_err(dev, "failed to get io clock\n");
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ret = PTR_ERR(clk);
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--
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2.8.0
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