Add support for sdhci-edshc mmc controller.
Signed-off-by: Angelo Dureghello <angelo.dureghello@xxxxxxxxxxx>
Acked-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
---
Changes for v3:
- removed volatile cast from clk.c
Changes for v4:
- comment style fix in m5441xsim.h
Changes for v5:
- fix compilation warnings from __clk_enable2 and __clk_disable2
Changes for v6:
none
---
arch/m68k/coldfire/clk.c | 15 ++++++++++
arch/m68k/coldfire/device.c | 33 +++++++++++++++++++--
arch/m68k/coldfire/m5441x.c | 12 +++++++-
arch/m68k/include/asm/m5441xsim.h | 15 ++++++++++
arch/m68k/include/asm/mcfclk.h | 2 ++
include/linux/platform_data/mmc-esdhc-mcf.h | 17 +++++++++++
6 files changed, 91 insertions(+), 3 deletions(-)
create mode 100644 include/linux/platform_data/mmc-esdhc-mcf.h
diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c
index 7bc666e482eb..75a057445472 100644
--- a/arch/m68k/coldfire/clk.c
+++ b/arch/m68k/coldfire/clk.c
@@ -73,6 +73,21 @@ struct clk_ops clk_ops1 = {
#endif /* MCFPM_PPMCR1 */
#endif /* MCFPM_PPMCR0 */
+static void __clk_enable2(struct clk *clk)
+{
+ __raw_writel(__raw_readl(MCFSDHC_CLK) | (1 << clk->slot), MCFSDHC_CLK);
+}
+
+static void __clk_disable2(struct clk *clk)
+{
+ __raw_writel(__raw_readl(MCFSDHC_CLK) & ~(1 << clk->slot), MCFSDHC_CLK);
+}
+
+struct clk_ops clk_ops2 = {
+ .enable = __clk_enable2,
+ .disable = __clk_disable2,
+};
+
struct clk *clk_get(struct device *dev, const char *id)
{
const char *clk_name = dev ? dev_name(dev) : id ? id : NULL;
diff --git a/arch/m68k/coldfire/device.c b/arch/m68k/coldfire/device.c
index b4103b6bfdeb..9ef4ec0aea00 100644
--- a/arch/m68k/coldfire/device.c
+++ b/arch/m68k/coldfire/device.c
@@ -22,6 +22,7 @@
#include <asm/mcfqspi.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/dma-mcf-edma.h>
+#include <linux/platform_data/mmc-esdhc-mcf.h>
/*
* All current ColdFire parts contain from 2, 3, 4 or 10 UARTS.
@@ -551,9 +552,35 @@ static struct platform_device mcf_edma = {
.platform_data = &mcf_edma_data,
}
};
-
#endif /* IS_ENABLED(CONFIG_MCF_EDMA) */
+#if IS_ENABLED(CONFIG_MMC)
+static struct mcf_esdhc_platform_data mcf_esdhc_data = {
+ .max_bus_width = 4,
+ .cd_type = ESDHC_CD_NONE,
+};
+
+static struct resource mcf_esdhc_resources[] = {
+ {
+ .start = MCFSDHC_BASE,
+ .end = MCFSDHC_BASE + MCFSDHC_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = MCF_IRQ_SDHC,
+ .end = MCF_IRQ_SDHC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device mcf_esdhc = {
+ .name = "sdhci-esdhc-mcf",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mcf_esdhc_resources),
+ .resource = mcf_esdhc_resources,
+ .dev.platform_data = &mcf_esdhc_data,
+};
+#endif /* IS_ENABLED(CONFIG_MMC) */
+
static struct platform_device *mcf_devices[] __initdata = {
&mcf_uart,
#if IS_ENABLED(CONFIG_FEC)
@@ -586,6 +613,9 @@ static struct platform_device *mcf_devices[] __initdata = {
#if IS_ENABLED(CONFIG_MCF_EDMA)
&mcf_edma,
#endif
+#if IS_ENABLED(CONFIG_MMC)
+ &mcf_esdhc,
+#endif
};
/*
@@ -614,4 +644,3 @@ static int __init mcf_init_devices(void)
}
arch_initcall(mcf_init_devices);
-
diff --git a/arch/m68k/coldfire/m5441x.c b/arch/m68k/coldfire/m5441x.c
index 5bd24c9b865d..ffa02de1a3fb 100644
--- a/arch/m68k/coldfire/m5441x.c
+++ b/arch/m68k/coldfire/m5441x.c
@@ -52,7 +52,7 @@ DEFINE_CLK(0, "mcfssi.0", 47, MCF_CLK);
DEFINE_CLK(0, "pll.0", 48, MCF_CLK);
DEFINE_CLK(0, "mcfrng.0", 49, MCF_CLK);
DEFINE_CLK(0, "mcfssi.1", 50, MCF_CLK);
-DEFINE_CLK(0, "mcfsdhc.0", 51, MCF_CLK);
+DEFINE_CLK(0, "sdhci-esdhc-mcf.0", 51, MCF_CLK);
DEFINE_CLK(0, "enet-fec.0", 53, MCF_CLK);
DEFINE_CLK(0, "enet-fec.1", 54, MCF_CLK);
DEFINE_CLK(0, "switch.0", 55, MCF_CLK);
@@ -74,6 +74,10 @@ DEFINE_CLK(1, "mcfpwm.0", 34, MCF_BUSCLK);
DEFINE_CLK(1, "sys.0", 36, MCF_BUSCLK);
DEFINE_CLK(1, "gpio.0", 37, MCF_BUSCLK);
+DEFINE_CLK(2, "ipg.0", 0, MCF_CLK);
+DEFINE_CLK(2, "ahb.0", 1, MCF_CLK);
+DEFINE_CLK(2, "per.0", 2, MCF_CLK);
+
struct clk *mcf_clks[] = {
&__clk_0_2,
&__clk_0_8,
@@ -131,6 +135,11 @@ struct clk *mcf_clks[] = {
&__clk_1_34,
&__clk_1_36,
&__clk_1_37,
+
+ &__clk_2_0,
+ &__clk_2_1,
+ &__clk_2_2,
+
NULL,
};
@@ -151,6 +160,7 @@ static struct clk * const enable_clks[] __initconst = {
&__clk_0_33, /* pit.1 */
&__clk_0_37, /* eport */
&__clk_0_48, /* pll */
+ &__clk_0_51, /* esdhc */
&__clk_1_36, /* CCM/reset module/Power management */
&__clk_1_37, /* gpio */
diff --git a/arch/m68k/include/asm/m5441xsim.h b/arch/m68k/include/asm/m5441xsim.h
index 4892f314ff38..e091e36d3464 100644
--- a/arch/m68k/include/asm/m5441xsim.h
+++ b/arch/m68k/include/asm/m5441xsim.h
@@ -278,6 +278,13 @@
#define MCFGPIO_IRQ_VECBASE (MCFINT_VECBASE - MCFGPIO_IRQ_MIN)
#define MCFGPIO_PIN_MAX 87
+/*
+ * Phase Locked Loop (PLL)
+ */
+#define MCF_PLL_CR 0xFC0C0000
+#define MCF_PLL_DR 0xFC0C0004
+#define MCF_PLL_SR 0xFC0C0008
+
/*
* DSPI module.
*/
@@ -298,5 +305,13 @@
#define MCFEDMA_IRQ_INTR16 (MCFINT1_VECBASE + MCFEDMA_EDMA_INTR16)
#define MCFEDMA_IRQ_INTR56 (MCFINT2_VECBASE + MCFEDMA_EDMA_INTR56)
#define MCFEDMA_IRQ_ERR (MCFINT0_VECBASE + MCFINT0_EDMA_ERR)
+/*
+ * esdhc module.
+ */
+#define MCFSDHC_BASE 0xfc0cc000
+#define MCFSDHC_SIZE 256
+#define MCFINT2_SDHC 31
+#define MCF_IRQ_SDHC (MCFINT2_VECBASE + MCFINT2_SDHC)
+#define MCFSDHC_CLK (MCFSDHC_BASE + 0x2c)
#endif /* m5441xsim_h */
diff --git a/arch/m68k/include/asm/mcfclk.h b/arch/m68k/include/asm/mcfclk.h
index 0aca504fae31..722627e06d66 100644
--- a/arch/m68k/include/asm/mcfclk.h
+++ b/arch/m68k/include/asm/mcfclk.h
@@ -30,6 +30,8 @@ extern struct clk_ops clk_ops0;
extern struct clk_ops clk_ops1;
#endif /* MCFPM_PPMCR1 */
+extern struct clk_ops clk_ops2;
+
#define DEFINE_CLK(clk_bank, clk_name, clk_slot, clk_rate) \
static struct clk __clk_##clk_bank##_##clk_slot = { \
.name = clk_name, \
diff --git a/include/linux/platform_data/mmc-esdhc-mcf.h b/include/linux/platform_data/mmc-esdhc-mcf.h
new file mode 100644
index 000000000000..85cb786a62fe
--- /dev/null
+++ b/include/linux/platform_data/mmc-esdhc-mcf.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __LINUX_PLATFORM_DATA_MCF_ESDHC_H__
+#define __LINUX_PLATFORM_DATA_MCF_ESDHC_H__
+
+enum cd_types {
+ ESDHC_CD_NONE, /* no CD, neither controller nor gpio */
+ ESDHC_CD_CONTROLLER, /* mmc controller internal CD */
+ ESDHC_CD_PERMANENT, /* no CD, card permanently wired to host */
+};
+
+struct mcf_esdhc_platform_data {
+ int max_bus_width;
+ int cd_type;
+};
+
+#endif /* __LINUX_PLATFORM_DATA_MCF_ESDHC_H__ */
--
2.26.2
