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mmc: sdhci-iproc: support standard byte register accesses

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Add bytewise register accesses support for newer versions of IPROC
SDHCI controllers.
Previous sdhci-iproc versions of SDIO controllers
(such as Raspberry Pi and Cygnus) only allowed for 32-bit register
accesses.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Scott Branden 2016-11-01 09:37:57 -07:00 committed by Ulf Hansson
parent 40fe0d43da
commit c833e92bbb
1 changed files with 33 additions and 2 deletions
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35
drivers/mmc/host/sdhci-iproc.c
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@ -143,6 +143,14 @@ static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg)
}
static const struct sdhci_ops sdhci_iproc_ops = {
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_ops sdhci_iproc_32only_ops = {
.read_l = sdhci_iproc_readl,
.read_w = sdhci_iproc_readw,
.read_b = sdhci_iproc_readb,
@ -156,6 +164,28 @@ static const struct sdhci_ops sdhci_iproc_ops = {
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_iproc_cygnus_pltfm_data = {
.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK,
.quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN,
.ops = &sdhci_iproc_32only_ops,
};
static const struct sdhci_iproc_data iproc_cygnus_data = {
.pdata = &sdhci_iproc_cygnus_pltfm_data,
.caps = ((0x1 << SDHCI_MAX_BLOCK_SHIFT)
& SDHCI_MAX_BLOCK_MASK) |
SDHCI_CAN_VDD_330 |
SDHCI_CAN_VDD_180 |
SDHCI_CAN_DO_SUSPEND |
SDHCI_CAN_DO_HISPD |
SDHCI_CAN_DO_ADMA2 |
SDHCI_CAN_DO_SDMA,
.caps1 = SDHCI_DRIVER_TYPE_C |
SDHCI_DRIVER_TYPE_D |
SDHCI_SUPPORT_DDR50,
.mmc_caps = MMC_CAP_1_8V_DDR,
};
static const struct sdhci_pltfm_data sdhci_iproc_pltfm_data = {
.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK,
.quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN,
@ -182,7 +212,7 @@ static const struct sdhci_pltfm_data sdhci_bcm2835_pltfm_data = {
.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_MISSING_CAPS,
.ops = &sdhci_iproc_ops,
.ops = &sdhci_iproc_32only_ops,
};
static const struct sdhci_iproc_data bcm2835_data = {
@ -194,7 +224,8 @@ static const struct sdhci_iproc_data bcm2835_data = {
static const struct of_device_id sdhci_iproc_of_match[] = {
{ .compatible = "brcm,bcm2835-sdhci", .data = &bcm2835_data },
{ .compatible = "brcm,sdhci-iproc-cygnus", .data = &iproc_data },
{ .compatible = "brcm,sdhci-iproc-cygnus", .data = &iproc_cygnus_data},
{ .compatible = "brcm,sdhci-iproc", .data = &iproc_data },
{ }
};
MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match);