diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0097-mmc-Add-new-API-call-sdio_reset_comm-for-resettin.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0097-mmc-Add-new-API-call-sdio_reset_comm-for-resettin.patch | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0097-mmc-Add-new-API-call-sdio_reset_comm-for-resettin.patch b/target/linux/goldfish/patches-2.6.30/0097-mmc-Add-new-API-call-sdio_reset_comm-for-resettin.patch new file mode 100644 index 000000000..59cd702b5 --- /dev/null +++ b/target/linux/goldfish/patches-2.6.30/0097-mmc-Add-new-API-call-sdio_reset_comm-for-resettin.patch @@ -0,0 +1,74 @@ +From 0b9879757f15d4ac99e032647cb3ee26393031b0 Mon Sep 17 00:00:00 2001 +From: San Mehat <san@android.com> +Date: Thu, 15 May 2008 09:15:37 -0700 +Subject: [PATCH 097/134] mmc: Add new API call 'sdio_reset_comm' for resetting communication with an SDIO device + +Signed-off-by: San Mehat <san@android.com> +--- + drivers/mmc/core/sdio.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++ + 1 files changed, 58 insertions(+), 0 deletions(-) + +--- a/drivers/mmc/core/sdio.c ++++ b/drivers/mmc/core/sdio.c +@@ -482,3 +482,61 @@ err: + return err; + } + ++int sdio_reset_comm(struct mmc_card *card) ++{ ++ struct mmc_host *host = card->host; ++ u32 ocr; ++ int err; ++ ++ printk("%s():\n", __func__); ++ mmc_go_idle(host); ++ ++ mmc_set_clock(host, host->f_min); ++ ++ err = mmc_send_io_op_cond(host, 0, &ocr); ++ if (err) ++ goto err; ++ ++ host->ocr = mmc_select_voltage(host, ocr); ++ if (!host->ocr) { ++ err = -EINVAL; ++ goto err; ++ } ++ ++ err = mmc_send_io_op_cond(host, host->ocr, &ocr); ++ if (err) ++ goto err; ++ ++ if (mmc_host_is_spi(host)) { ++ err = mmc_spi_set_crc(host, use_spi_crc); ++ if (err) ++ goto err; ++ } ++ ++ if (!mmc_host_is_spi(host)) { ++ err = mmc_send_relative_addr(host, &card->rca); ++ if (err) ++ goto err; ++ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); ++ } ++ if (!mmc_host_is_spi(host)) { ++ err = mmc_select_card(card); ++ if (err) ++ goto err; ++ } ++ ++ mmc_set_clock(host, card->cis.max_dtr); ++ err = sdio_enable_wide(card); ++ if (err) ++ goto err; ++ ++ return 0; ++ err: ++ printk("%s: Error resetting SDIO communications (%d)\n", ++ mmc_hostname(host), err); ++ mmc_release_host(host); ++ return err; ++} ++EXPORT_SYMBOL(sdio_reset_comm); ++ ++ |