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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2012-01-28 19:36:24 +0100
committerPaul Mundt <lethal@linux-sh.org>2012-03-28 16:28:25 +0900
commit4eb80146f8ccd4e01d1320e42611b31cde7f06e7 (patch)
tree0a009f0d5260915df272b8580a212a78f7becda0 /arch/sh/boards
parent9b2ffa8d048656baf7f5e764d2586ba59927a25b (diff)
downloadop-kernel-dev-4eb80146f8ccd4e01d1320e42611b31cde7f06e7.zip
op-kernel-dev-4eb80146f8ccd4e01d1320e42611b31cde7f06e7.tar.gz
sh: ecovec: switch SDHI controllers to card polling
Polling for card hotplug events is a better option than using SDHI native hotplug interrupt, because the latter option forces the controller to stay permanently powered up and enabled. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards')
-rw-r--r--arch/sh/boards/mach-ecovec24/setup.c104
1 files changed, 63 insertions, 41 deletions
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index e5ac12b..d12fe9d 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -522,11 +522,18 @@ static void sdhi0_set_pwr(struct platform_device *pdev, int state)
gpio_set_value(GPIO_PTB6, state);
}
+static int sdhi0_get_cd(struct platform_device *pdev)
+{
+ return !gpio_get_value(GPIO_PTY7);
+}
+
static struct sh_mobile_sdhi_info sdhi0_info = {
.dma_slave_tx = SHDMA_SLAVE_SDHI0_TX,
.dma_slave_rx = SHDMA_SLAVE_SDHI0_RX,
.set_pwr = sdhi0_set_pwr,
- .tmio_caps = MMC_CAP_SDIO_IRQ | MMC_CAP_POWER_OFF_CARD,
+ .tmio_caps = MMC_CAP_SDIO_IRQ | MMC_CAP_POWER_OFF_CARD |
+ MMC_CAP_NEEDS_POLL,
+ .get_cd = sdhi0_get_cd,
};
static struct resource sdhi0_resources[] = {
@@ -559,11 +566,18 @@ static void sdhi1_set_pwr(struct platform_device *pdev, int state)
gpio_set_value(GPIO_PTB7, state);
}
+static int sdhi1_get_cd(struct platform_device *pdev)
+{
+ return !gpio_get_value(GPIO_PTW7);
+}
+
static struct sh_mobile_sdhi_info sdhi1_info = {
.dma_slave_tx = SHDMA_SLAVE_SDHI1_TX,
.dma_slave_rx = SHDMA_SLAVE_SDHI1_RX,
- .tmio_caps = MMC_CAP_SDIO_IRQ | MMC_CAP_POWER_OFF_CARD,
+ .tmio_caps = MMC_CAP_SDIO_IRQ | MMC_CAP_POWER_OFF_CARD |
+ MMC_CAP_NEEDS_POLL,
.set_pwr = sdhi1_set_pwr,
+ .get_cd = sdhi1_get_cd,
};
static struct resource sdhi1_resources[] = {
@@ -1001,6 +1015,7 @@ extern char ecovec24_sdram_leave_end;
static int __init arch_setup(void)
{
struct clk *clk;
+ bool cn12_enabled = false;
/* register board specific self-refresh code */
sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF |
@@ -1201,9 +1216,13 @@ static int __init arch_setup(void)
gpio_direction_input(GPIO_PTR5);
gpio_direction_input(GPIO_PTR6);
+ /* SD-card slot CN11 */
+ /* Card-detect, used on CN11, either with SDHI0 or with SPI */
+ gpio_request(GPIO_PTY7, NULL);
+ gpio_direction_input(GPIO_PTY7);
+
#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE)
/* enable SDHI0 on CN11 (needs DS2.4 set to ON) */
- gpio_request(GPIO_FN_SDHI0CD, NULL);
gpio_request(GPIO_FN_SDHI0WP, NULL);
gpio_request(GPIO_FN_SDHI0CMD, NULL);
gpio_request(GPIO_FN_SDHI0CLK, NULL);
@@ -1213,23 +1232,6 @@ static int __init arch_setup(void)
gpio_request(GPIO_FN_SDHI0D0, NULL);
gpio_request(GPIO_PTB6, NULL);
gpio_direction_output(GPIO_PTB6, 0);
-
-#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)
- /* enable SDHI1 on CN12 (needs DS2.6,7 set to ON,OFF) */
- gpio_request(GPIO_FN_SDHI1CD, NULL);
- gpio_request(GPIO_FN_SDHI1WP, NULL);
- gpio_request(GPIO_FN_SDHI1CMD, NULL);
- gpio_request(GPIO_FN_SDHI1CLK, NULL);
- gpio_request(GPIO_FN_SDHI1D3, NULL);
- gpio_request(GPIO_FN_SDHI1D2, NULL);
- gpio_request(GPIO_FN_SDHI1D1, NULL);
- gpio_request(GPIO_FN_SDHI1D0, NULL);
- gpio_request(GPIO_PTB7, NULL);
- gpio_direction_output(GPIO_PTB7, 0);
-
- /* I/O buffer drive ability is high for SDHI1 */
- __raw_writew((__raw_readw(IODRIVEA) & ~0x3000) | 0x2000 , IODRIVEA);
-#endif /* CONFIG_MMC_SH_MMCIF */
#else
/* enable MSIOF0 on CN11 (needs DS2.4 set to OFF) */
gpio_request(GPIO_FN_MSIOF0_TXD, NULL);
@@ -1241,12 +1243,51 @@ static int __init arch_setup(void)
gpio_direction_output(GPIO_PTB6, 0); /* disable power by default */
gpio_request(GPIO_PTY6, NULL); /* write protect */
gpio_direction_input(GPIO_PTY6);
- gpio_request(GPIO_PTY7, NULL); /* card detect */
- gpio_direction_input(GPIO_PTY7);
spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
#endif
+ /* MMC/SD-card slot CN12 */
+#if defined(CONFIG_MMC_SH_MMCIF) || defined(CONFIG_MMC_SH_MMCIF_MODULE)
+ /* enable MMCIF (needs DS2.6,7 set to OFF,ON) */
+ gpio_request(GPIO_FN_MMC_D7, NULL);
+ gpio_request(GPIO_FN_MMC_D6, NULL);
+ gpio_request(GPIO_FN_MMC_D5, NULL);
+ gpio_request(GPIO_FN_MMC_D4, NULL);
+ gpio_request(GPIO_FN_MMC_D3, NULL);
+ gpio_request(GPIO_FN_MMC_D2, NULL);
+ gpio_request(GPIO_FN_MMC_D1, NULL);
+ gpio_request(GPIO_FN_MMC_D0, NULL);
+ gpio_request(GPIO_FN_MMC_CLK, NULL);
+ gpio_request(GPIO_FN_MMC_CMD, NULL);
+ gpio_request(GPIO_PTB7, NULL);
+ gpio_direction_output(GPIO_PTB7, 0);
+
+ cn12_enabled = true;
+#elif defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE)
+ /* enable SDHI1 on CN12 (needs DS2.6,7 set to ON,OFF) */
+ gpio_request(GPIO_FN_SDHI1WP, NULL);
+ gpio_request(GPIO_FN_SDHI1CMD, NULL);
+ gpio_request(GPIO_FN_SDHI1CLK, NULL);
+ gpio_request(GPIO_FN_SDHI1D3, NULL);
+ gpio_request(GPIO_FN_SDHI1D2, NULL);
+ gpio_request(GPIO_FN_SDHI1D1, NULL);
+ gpio_request(GPIO_FN_SDHI1D0, NULL);
+ gpio_request(GPIO_PTB7, NULL);
+ gpio_direction_output(GPIO_PTB7, 0);
+
+ /* Card-detect, used on CN12 with SDHI1 */
+ gpio_request(GPIO_PTW7, NULL);
+ gpio_direction_input(GPIO_PTW7);
+
+ cn12_enabled = true;
+#endif
+
+ if (cn12_enabled)
+ /* I/O buffer drive ability is high for CN12 */
+ __raw_writew((__raw_readw(IODRIVEA) & ~0x3000) | 0x2000,
+ IODRIVEA);
+
/* enable Video */
gpio_request(GPIO_PTU2, NULL);
gpio_direction_output(GPIO_PTU2, 1);
@@ -1305,25 +1346,6 @@ static int __init arch_setup(void)
gpio_request(GPIO_PTU5, NULL);
gpio_direction_output(GPIO_PTU5, 0);
-#if defined(CONFIG_MMC_SH_MMCIF) || defined(CONFIG_MMC_SH_MMCIF_MODULE)
- /* enable MMCIF (needs DS2.6,7 set to OFF,ON) */
- gpio_request(GPIO_FN_MMC_D7, NULL);
- gpio_request(GPIO_FN_MMC_D6, NULL);
- gpio_request(GPIO_FN_MMC_D5, NULL);
- gpio_request(GPIO_FN_MMC_D4, NULL);
- gpio_request(GPIO_FN_MMC_D3, NULL);
- gpio_request(GPIO_FN_MMC_D2, NULL);
- gpio_request(GPIO_FN_MMC_D1, NULL);
- gpio_request(GPIO_FN_MMC_D0, NULL);
- gpio_request(GPIO_FN_MMC_CLK, NULL);
- gpio_request(GPIO_FN_MMC_CMD, NULL);
- gpio_request(GPIO_PTB7, NULL);
- gpio_direction_output(GPIO_PTB7, 0);
-
- /* I/O buffer drive ability is high for MMCIF */
- __raw_writew((__raw_readw(IODRIVEA) & ~0x3000) | 0x2000 , IODRIVEA);
-#endif
-
/* enable I2C device */
i2c_register_board_info(0, i2c0_devices,
ARRAY_SIZE(i2c0_devices));
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