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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:49:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:49:36 -0800
commit0ba3307a8ec35252f7b1e222e32889a6f3d9ceb3 (patch)
tree26126ed7a2080a706f0488c215549fc9f5f76a59 /drivers
parent903a9f77d1d00c8621bc37afd959ac45a4b3ebec (diff)
parentcd2f43a1f7400a74a084094502f70df2e169c6e8 (diff)
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM driver updates from Olof Johansson: "Updates of SoC-near drivers and other driver updates that makes more sense to take through our tree. The largest part of this is a conversion of device registration for some renesas shmobile/sh devices over to use resources. This has required coordination with the corresponding arch/sh changes, and we've agreed to merge the arch/sh changes through our tree. Added in this branch is support for Trusted Foundations secure firmware, which is what is used on many of the commercial Nvidia Tegra products that are in the market, including the Nvidia Shield. The code is local to arch/arm at this time since it's uncertain whether it will be shared with arm64 longer-term, if needed we will refactor later. A couple of new RTC drivers used on ARM boards, merged through our tree on request by the RTC maintainer. ... plus a bunch of smaller updates across the board, gpio conversions for davinci, etc" * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits) watchdog: davinci: rename platform driver to davinci-wdt tty: serial: Limit msm_serial_hs driver to platforms that use it mmc: msm_sdcc: Limit driver to platforms that use it usb: phy: msm: Move mach dependent code to platform data clk: versatile: fixup IM-PD1 clock implementation clk: versatile: pass a name to ICST clock provider ARM: integrator: pass parent IRQ to the SIC irqchip: versatile FPGA: support cascaded interrupts from DT gpio: davinci: don't create irq_domain in case of unbanked irqs gpio: davinci: use chained_irq_enter/chained_irq_exit API gpio: davinci: add OF support gpio: davinci: remove unused variable intc_irq_num gpio: davinci: convert to use irqdomain support. gpio: introduce GPIO_DAVINCI kconfig option gpio: davinci: get rid of DAVINCI_N_GPIO gpio: davinci: use {readl|writel}_relaxed() instead of __raw_* serial: sh-sci: Add OF support serial: sh-sci: Add device tree bindings documentation serial: sh-sci: Remove platform data mapbase and irqs fields serial: sh-sci: Remove platform data scbrr_algo_id field ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/bus/mvebu-mbus.c10
-rw-r--r--drivers/clk/versatile/clk-icst.c3
-rw-r--r--drivers/clk/versatile/clk-icst.h1
-rw-r--r--drivers/clk/versatile/clk-impd1.c88
-rw-r--r--drivers/clk/versatile/clk-integrator.c2
-rw-r--r--drivers/clk/versatile/clk-realview.c6
-rw-r--r--drivers/crypto/atmel-aes.c143
-rw-r--r--drivers/crypto/atmel-sha.c103
-rw-r--r--drivers/crypto/atmel-tdes.c143
-rw-r--r--drivers/gpio/Kconfig7
-rw-r--r--drivers/gpio/Makefile2
-rw-r--r--drivers/gpio/gpio-davinci.c185
-rw-r--r--drivers/irqchip/exynos-combiner.c15
-rw-r--r--drivers/irqchip/irq-renesas-irqc.c21
-rw-r--r--drivers/irqchip/irq-versatile-fpga.c15
-rw-r--r--drivers/mmc/host/Kconfig2
-rw-r--r--drivers/rtc/Kconfig18
-rw-r--r--drivers/rtc/Makefile2
-rw-r--r--drivers/rtc/rtc-isl12057.c310
-rw-r--r--drivers/rtc/rtc-sunxi.c523
-rw-r--r--drivers/tty/serial/Kconfig2
-rw-r--r--drivers/tty/serial/sh-sci.c187
-rw-r--r--drivers/usb/host/r8a66597-hcd.c4
-rw-r--r--drivers/usb/phy/phy-msm-usb.c35
-rw-r--r--drivers/watchdog/davinci_wdt.c4
25 files changed, 1518 insertions, 313 deletions
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 2394e9753ef5..725c46162bbd 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -588,12 +588,6 @@ static const struct mvebu_mbus_soc_data mv78xx0_mbus_data = {
.show_cpu_target = mvebu_sdram_debug_show_orion,
};
-/*
- * The driver doesn't yet have a DT binding because the details of
- * this DT binding still need to be sorted out. However, as a
- * preparation, we already use of_device_id to match a SoC description
- * string against the SoC specific details of this driver.
- */
static const struct of_device_id of_mvebu_mbus_ids[] = {
{ .compatible = "marvell,armada370-mbus",
.data = &armada_370_xp_mbus_data, },
@@ -734,11 +728,11 @@ int __init mvebu_mbus_init(const char *soc, phys_addr_t mbuswins_phys_base,
{
const struct of_device_id *of_id;
- for (of_id = of_mvebu_mbus_ids; of_id->compatible; of_id++)
+ for (of_id = of_mvebu_mbus_ids; of_id->compatible[0]; of_id++)
if (!strcmp(of_id->compatible, soc))
break;
- if (!of_id->compatible) {
+ if (!of_id->compatible[0]) {
pr_err("could not find a matching SoC family\n");
return -ENODEV;
}
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index f5e4c21b301f..8cbfcf88fae3 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -119,6 +119,7 @@ static const struct clk_ops icst_ops = {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
+ const char *name,
void __iomem *base)
{
struct clk *clk;
@@ -130,7 +131,7 @@ struct clk *icst_clk_register(struct device *dev,
pr_err("could not allocate ICST clock!\n");
return ERR_PTR(-ENOMEM);
}
- init.name = "icst";
+ init.name = name;
init.ops = &icst_ops;
init.flags = CLK_IS_ROOT;
init.parent_names = NULL;
diff --git a/drivers/clk/versatile/clk-icst.h b/drivers/clk/versatile/clk-icst.h
index dad51b6ffd00..be99dd0da785 100644
--- a/drivers/clk/versatile/clk-icst.h
+++ b/drivers/clk/versatile/clk-icst.h
@@ -15,4 +15,5 @@ struct clk_icst_desc {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
+ const char *name,
void __iomem *base);
diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 369139af2a3b..844f8d711a12 100644
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -1,6 +1,6 @@
/*
* Clock driver for the ARM Integrator/IM-PD1 board
- * Copyright (C) 2012 Linus Walleij
+ * Copyright (C) 2012-2013 Linus Walleij
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -18,20 +18,28 @@
#include "clk-icst.h"
struct impd1_clk {
- struct clk *vcoclk;
+ char *vco1name;
+ struct clk *vco1clk;
+ char *vco2name;
+ struct clk *vco2clk;
+ struct clk *mmciclk;
+ char *uartname;
struct clk *uartclk;
- struct clk_lookup *clks[3];
+ char *spiname;
+ struct clk *spiclk;
+ char *scname;
+ struct clk *scclk;
+ struct clk_lookup *clks[6];
};
+/* One entry for each connected IM-PD1 LM */
static struct impd1_clk impd1_clks[4];
/*
- * There are two VCO's on the IM-PD1 but only one is used by the
- * kernel, that is why we are only implementing the control of
- * IMPD1_OSC1 here.
+ * There are two VCO's on the IM-PD1
*/
-static const struct icst_params impd1_vco_params = {
+static const struct icst_params impd1_vco1_params = {
.ref = 24000000, /* 24 MHz */
.vco_max = ICST525_VCO_MAX_3V,
.vco_min = ICST525_VCO_MIN,
@@ -44,11 +52,29 @@ static const struct icst_params impd1_vco_params = {
};
static const struct clk_icst_desc impd1_icst1_desc = {
- .params = &impd1_vco_params,
+ .params = &impd1_vco1_params,
.vco_offset = IMPD1_OSC1,
.lock_offset = IMPD1_LOCK,
};
+static const struct icst_params impd1_vco2_params = {
+ .ref = 24000000, /* 24 MHz */
+ .vco_max = ICST525_VCO_MAX_3V,
+ .vco_min = ICST525_VCO_MIN,
+ .vd_min = 12,
+ .vd_max = 519,
+ .rd_min = 3,
+ .rd_max = 120,
+ .s2div = icst525_s2div,
+ .idx2s = icst525_idx2s,
+};
+
+static const struct clk_icst_desc impd1_icst2_desc = {
+ .params = &impd1_vco2_params,
+ .vco_offset = IMPD1_OSC2,
+ .lock_offset = IMPD1_LOCK,
+};
+
/**
* integrator_impd1_clk_init() - set up the integrator clock tree
* @base: base address of the logic module (LM)
@@ -66,16 +92,39 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
}
imc = &impd1_clks[id];
- clk = icst_clk_register(NULL, &impd1_icst1_desc, base);
- imc->vcoclk = clk;
+ imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
+ clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, base);
+ imc->vco1clk = clk;
imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
- /* UART reference clock */
- clk = clk_register_fixed_rate(NULL, "uartclk", NULL, CLK_IS_ROOT,
- 14745600);
+ /* VCO2 is also called "CLK2" */
+ imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
+ clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, base);
+ imc->vco2clk = clk;
+
+ /* MMCI uses CLK2 right off */
+ imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
+
+ /* UART reference clock divides CLK2 by a fixed factor 4 */
+ imc->uartname = kasprintf(GFP_KERNEL, "lm%x-uartclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->uartname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 4);
imc->uartclk = clk;
- imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
- imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+ imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
+ imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+
+ /* SPI PL022 clock divides CLK2 by a fixed factor 64 */
+ imc->spiname = kasprintf(GFP_KERNEL, "lm%x-spiclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->spiname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 64);
+ imc->clks[4] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+
+ /* Smart Card clock divides CLK2 by a fixed factor 4 */
+ imc->scname = kasprintf(GFP_KERNEL, "lm%x-scclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->scname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 4);
+ imc->scclk = clk;
+ imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
clkdev_add(imc->clks[i]);
@@ -92,6 +141,13 @@ void integrator_impd1_clk_exit(unsigned int id)
for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
clkdev_drop(imc->clks[i]);
+ clk_unregister(imc->spiclk);
clk_unregister(imc->uartclk);
- clk_unregister(imc->vcoclk);
+ clk_unregister(imc->vco2clk);
+ clk_unregister(imc->vco1clk);
+ kfree(imc->scname);
+ kfree(imc->spiname);
+ kfree(imc->uartname);
+ kfree(imc->vco2name);
+ kfree(imc->vco1name);
}
diff --git a/drivers/clk/versatile/clk-integrator.c b/drivers/clk/versatile/clk-integrator.c
index 08593b4ee2c9..bda8967e09c2 100644
--- a/drivers/clk/versatile/clk-integrator.c
+++ b/drivers/clk/versatile/clk-integrator.c
@@ -78,7 +78,7 @@ void __init integrator_clk_init(bool is_cp)
clk_register_clkdev(clk, NULL, "sp804");
/* ICST VCO clock used on the Integrator/CP CLCD */
- clk = icst_clk_register(NULL, &cp_icst_desc,
+ clk = icst_clk_register(NULL, &cp_icst_desc, "icst",
__io_address(INTEGRATOR_HDR_BASE));
clk_register_clkdev(clk, NULL, "clcd");
}
diff --git a/drivers/clk/versatile/clk-realview.c b/drivers/clk/versatile/clk-realview.c
index cda07e70a408..747e7b31117c 100644
--- a/drivers/clk/versatile/clk-realview.c
+++ b/drivers/clk/versatile/clk-realview.c
@@ -84,9 +84,11 @@ void __init realview_clk_init(void __iomem *sysbase, bool is_pb1176)
/* ICST VCO clock */
if (is_pb1176)
- clk = icst_clk_register(NULL, &realview_osc0_desc, sysbase);
+ clk = icst_clk_register(NULL, &realview_osc0_desc,
+ "osc0", sysbase);
else
- clk = icst_clk_register(NULL, &realview_osc4_desc, sysbase);
+ clk = icst_clk_register(NULL, &realview_osc4_desc,
+ "osc4", sysbase);
clk_register_clkdev(clk, NULL, "dev:clcd");
clk_register_clkdev(clk, NULL, "issp:clcd");
diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index c1efd910d97b..d7c9e317423c 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
+#include <linux/of_device.h>
#include <linux/delay.h>
#include <linux/crypto.h>
#include <linux/cryptohash.h>
@@ -39,6 +40,7 @@
#include <crypto/hash.h>
#include <crypto/internal/hash.h>
#include <linux/platform_data/crypto-atmel.h>
+#include <dt-bindings/dma/at91.h>
#include "atmel-aes-regs.h"
#define CFB8_BLOCK_SIZE 1
@@ -747,59 +749,50 @@ static int atmel_aes_dma_init(struct atmel_aes_dev *dd,
struct crypto_platform_data *pdata)
{
int err = -ENOMEM;
- dma_cap_mask_t mask_in, mask_out;
+ dma_cap_mask_t mask;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ /* Try to grab 2 DMA channels */
+ dd->dma_lch_in.chan = dma_request_slave_channel_compat(mask,
+ atmel_aes_filter, &pdata->dma_slave->rxdata, dd->dev, "tx");
+ if (!dd->dma_lch_in.chan)
+ goto err_dma_in;
+
+ dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
+ dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
+ AES_IDATAR(0);
+ dd->dma_lch_in.dma_conf.src_maxburst = dd->caps.max_burst_size;
+ dd->dma_lch_in.dma_conf.src_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.dst_maxburst = dd->caps.max_burst_size;
+ dd->dma_lch_in.dma_conf.dst_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.device_fc = false;
+
+ dd->dma_lch_out.chan = dma_request_slave_channel_compat(mask,
+ atmel_aes_filter, &pdata->dma_slave->txdata, dd->dev, "rx");
+ if (!dd->dma_lch_out.chan)
+ goto err_dma_out;
+
+ dd->dma_lch_out.dma_conf.direction = DMA_DEV_TO_MEM;
+ dd->dma_lch_out.dma_conf.src_addr = dd->phys_base +
+ AES_ODATAR(0);
+ dd->dma_lch_out.dma_conf.src_maxburst = dd->caps.max_burst_size;
+ dd->dma_lch_out.dma_conf.src_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_out.dma_conf.dst_maxburst = dd->caps.max_burst_size;
+ dd->dma_lch_out.dma_conf.dst_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_out.dma_conf.device_fc = false;
- if (pdata && pdata->dma_slave->txdata.dma_dev &&
- pdata->dma_slave->rxdata.dma_dev) {
-
- /* Try to grab 2 DMA channels */
- dma_cap_zero(mask_in);
- dma_cap_set(DMA_SLAVE, mask_in);
-
- dd->dma_lch_in.chan = dma_request_channel(mask_in,
- atmel_aes_filter, &pdata->dma_slave->rxdata);
-
- if (!dd->dma_lch_in.chan)
- goto err_dma_in;
-
- dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
- dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
- AES_IDATAR(0);
- dd->dma_lch_in.dma_conf.src_maxburst = dd->caps.max_burst_size;
- dd->dma_lch_in.dma_conf.src_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.dst_maxburst = dd->caps.max_burst_size;
- dd->dma_lch_in.dma_conf.dst_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.device_fc = false;
-
- dma_cap_zero(mask_out);
- dma_cap_set(DMA_SLAVE, mask_out);
- dd->dma_lch_out.chan = dma_request_channel(mask_out,
- atmel_aes_filter, &pdata->dma_slave->txdata);
-
- if (!dd->dma_lch_out.chan)
- goto err_dma_out;
-
- dd->dma_lch_out.dma_conf.direction = DMA_DEV_TO_MEM;
- dd->dma_lch_out.dma_conf.src_addr = dd->phys_base +
- AES_ODATAR(0);
- dd->dma_lch_out.dma_conf.src_maxburst = dd->caps.max_burst_size;
- dd->dma_lch_out.dma_conf.src_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_out.dma_conf.dst_maxburst = dd->caps.max_burst_size;
- dd->dma_lch_out.dma_conf.dst_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_out.dma_conf.device_fc = false;
-
- return 0;
- } else {
- return -ENODEV;
- }
+ return 0;
err_dma_out:
dma_release_channel(dd->dma_lch_in.chan);
err_dma_in:
+ dev_warn(dd->dev, "no DMA channel available\n");
return err;
}
@@ -1261,6 +1254,47 @@ static void atmel_aes_get_cap(struct atmel_aes_dev *dd)
}
}
+#if defined(CONFIG_OF)
+static const struct of_device_id atmel_aes_dt_ids[] = {
+ { .compatible = "atmel,at91sam9g46-aes" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, atmel_aes_dt_ids);
+
+static struct crypto_platform_data *atmel_aes_of_init(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct crypto_platform_data *pdata;
+
+ if (!np) {
+ dev_err(&pdev->dev, "device node not found\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "could not allocate memory for pdata\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pdata->dma_slave = devm_kzalloc(&pdev->dev,
+ sizeof(*(pdata->dma_slave)),
+ GFP_KERNEL);
+ if (!pdata->dma_slave) {
+ dev_err(&pdev->dev, "could not allocate memory for dma_slave\n");
+ devm_kfree(&pdev->dev, pdata);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return pdata;
+}
+#else
+static inline struct crypto_platform_data *atmel_aes_of_init(struct platform_device *pdev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
static int atmel_aes_probe(struct platform_device *pdev)
{
struct atmel_aes_dev *aes_dd;
@@ -1272,6 +1306,14 @@ static int atmel_aes_probe(struct platform_device *pdev)
pdata = pdev->dev.platform_data;
if (!pdata) {
+ pdata = atmel_aes_of_init(pdev);
+ if (IS_ERR(pdata)) {
+ err = PTR_ERR(pdata);
+ goto aes_dd_err;
+ }
+ }
+
+ if (!pdata->dma_slave) {
err = -ENXIO;
goto aes_dd_err;
}
@@ -1358,7 +1400,9 @@ static int atmel_aes_probe(struct platform_device *pdev)
if (err)
goto err_algs;
- dev_info(dev, "Atmel AES\n");
+ dev_info(dev, "Atmel AES - Using %s, %s for DMA transfers\n",
+ dma_chan_name(aes_dd->dma_lch_in.chan),
+ dma_chan_name(aes_dd->dma_lch_out.chan));
return 0;
@@ -1424,6 +1468,7 @@ static struct platform_driver atmel_aes_driver = {
.driver = {
.name = "atmel_aes",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(atmel_aes_dt_ids),
},
};
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index eaed8bf183bc..0618be06b9fb 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
+#include <linux/of_device.h>
#include <linux/delay.h>
#include <linux/crypto.h>
#include <linux/cryptohash.h>
@@ -1263,32 +1264,29 @@ static int atmel_sha_dma_init(struct atmel_sha_dev *dd,
int err = -ENOMEM;
dma_cap_mask_t mask_in;
- if (pdata && pdata->dma_slave->rxdata.dma_dev) {
- /* Try to grab DMA channel */
- dma_cap_zero(mask_in);
- dma_cap_set(DMA_SLAVE, mask_in);
+ /* Try to grab DMA channel */
+ dma_cap_zero(mask_in);
+ dma_cap_set(DMA_SLAVE, mask_in);
- dd->dma_lch_in.chan = dma_request_channel(mask_in,
- atmel_sha_filter, &pdata->dma_slave->rxdata);
-
- if (!dd->dma_lch_in.chan)
- return err;
-
- dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
- dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
- SHA_REG_DIN(0);
- dd->dma_lch_in.dma_conf.src_maxburst = 1;
- dd->dma_lch_in.dma_conf.src_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.dst_maxburst = 1;
- dd->dma_lch_in.dma_conf.dst_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.device_fc = false;
-
- return 0;
+ dd->dma_lch_in.chan = dma_request_slave_channel_compat(mask_in,
+ atmel_sha_filter, &pdata->dma_slave->rxdata, dd->dev, "tx");
+ if (!dd->dma_lch_in.chan) {
+ dev_warn(dd->dev, "no DMA channel available\n");
+ return err;
}
- return -ENODEV;
+ dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
+ dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
+ SHA_REG_DIN(0);
+ dd->dma_lch_in.dma_conf.src_maxburst = 1;
+ dd->dma_lch_in.dma_conf.src_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.dst_maxburst = 1;
+ dd->dma_lch_in.dma_conf.dst_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.device_fc = false;
+
+ return 0;
}
static void atmel_sha_dma_cleanup(struct atmel_sha_dev *dd)
@@ -1326,6 +1324,48 @@ static void atmel_sha_get_cap(struct atmel_sha_dev *dd)
}
}
+#if defined(CONFIG_OF)
+static const struct of_device_id atmel_sha_dt_ids[] = {
+ { .compatible = "atmel,at91sam9g46-sha" },
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, atmel_sha_dt_ids);
+
+static struct crypto_platform_data *atmel_sha_of_init(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct crypto_platform_data *pdata;
+
+ if (!np) {
+ dev_err(&pdev->dev, "device node not found\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "could not allocate memory for pdata\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pdata->dma_slave = devm_kzalloc(&pdev->dev,
+ sizeof(*(pdata->dma_slave)),
+ GFP_KERNEL);
+ if (!pdata->dma_slave) {
+ dev_err(&pdev->dev, "could not allocate memory for dma_slave\n");
+ devm_kfree(&pdev->dev, pdata);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return pdata;
+}
+#else /* CONFIG_OF */
+static inline struct crypto_platform_data *atmel_sha_of_init(struct platform_device *dev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
static int atmel_sha_probe(struct platform_device *pdev)
{
struct atmel_sha_dev *sha_dd;
@@ -1402,13 +1442,23 @@ static int atmel_sha_probe(struct platform_device *pdev)
if (sha_dd->caps.has_dma) {
pdata = pdev->dev.platform_data;
if (!pdata) {
- dev_err(&pdev->dev, "platform data not available\n");
+ pdata = atmel_sha_of_init(pdev);
+ if (IS_ERR(pdata)) {
+ dev_err(&pdev->dev, "platform data not available\n");
+ err = PTR_ERR(pdata);
+ goto err_pdata;
+ }
+ }
+ if (!pdata->dma_slave) {
err = -ENXIO;
goto err_pdata;
}
err = atmel_sha_dma_init(sha_dd, pdata);
if (err)
goto err_sha_dma;
+
+ dev_info(dev, "using %s for DMA transfers\n",
+ dma_chan_name(sha_dd->dma_lch_in.chan));
}
spin_lock(&atmel_sha.lock);
@@ -1419,7 +1469,9 @@ static int atmel_sha_probe(struct platform_device *pdev)
if (err)
goto err_algs;
- dev_info(dev, "Atmel SHA1/SHA256\n");
+ dev_info(dev, "Atmel SHA1/SHA256%s%s\n",
+ sha_dd->caps.has_sha224 ? "/SHA224" : "",
+ sha_dd->caps.has_sha_384_512 ? "/SHA384/SHA512" : "");
return 0;
@@ -1483,6 +1535,7 @@ static struct platform_driver atmel_sha_driver = {
.driver = {
.name = "atmel_sha",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(atmel_sha_dt_ids),
},
};
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c
index 4a99564a08e6..6cde5b530c69 100644
--- a/drivers/crypto/atmel-tdes.c
+++ b/drivers/crypto/atmel-tdes.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
+#include <linux/of_device.h>
#include <linux/delay.h>
#include <linux/crypto.h>
#include <linux/cryptohash.h>
@@ -716,59 +717,50 @@ static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd,
struct crypto_platform_data *pdata)
{
int err = -ENOMEM;
- dma_cap_mask_t mask_in, mask_out;
+ dma_cap_mask_t mask;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ /* Try to grab 2 DMA channels */
+ dd->dma_lch_in.chan = dma_request_slave_channel_compat(mask,
+ atmel_tdes_filter, &pdata->dma_slave->rxdata, dd->dev, "tx");
+ if (!dd->dma_lch_in.chan)
+ goto err_dma_in;
+
+ dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
+ dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
+ TDES_IDATA1R;
+ dd->dma_lch_in.dma_conf.src_maxburst = 1;
+ dd->dma_lch_in.dma_conf.src_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.dst_maxburst = 1;
+ dd->dma_lch_in.dma_conf.dst_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_in.dma_conf.device_fc = false;
+
+ dd->dma_lch_out.chan = dma_request_slave_channel_compat(mask,
+ atmel_tdes_filter, &pdata->dma_slave->txdata, dd->dev, "rx");
+ if (!dd->dma_lch_out.chan)
+ goto err_dma_out;
+
+ dd->dma_lch_out.dma_conf.direction = DMA_DEV_TO_MEM;
+ dd->dma_lch_out.dma_conf.src_addr = dd->phys_base +
+ TDES_ODATA1R;
+ dd->dma_lch_out.dma_conf.src_maxburst = 1;
+ dd->dma_lch_out.dma_conf.src_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_out.dma_conf.dst_maxburst = 1;
+ dd->dma_lch_out.dma_conf.dst_addr_width =
+ DMA_SLAVE_BUSWIDTH_4_BYTES;
+ dd->dma_lch_out.dma_conf.device_fc = false;
- if (pdata && pdata->dma_slave->txdata.dma_dev &&
- pdata->dma_slave->rxdata.dma_dev) {
-
- /* Try to grab 2 DMA channels */
- dma_cap_zero(mask_in);
- dma_cap_set(DMA_SLAVE, mask_in);
-
- dd->dma_lch_in.chan = dma_request_channel(mask_in,
- atmel_tdes_filter, &pdata->dma_slave->rxdata);
-
- if (!dd->dma_lch_in.chan)
- goto err_dma_in;
-
- dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
- dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
- TDES_IDATA1R;
- dd->dma_lch_in.dma_conf.src_maxburst = 1;
- dd->dma_lch_in.dma_conf.src_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.dst_maxburst = 1;
- dd->dma_lch_in.dma_conf.dst_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_in.dma_conf.device_fc = false;
-
- dma_cap_zero(mask_out);
- dma_cap_set(DMA_SLAVE, mask_out);
- dd->dma_lch_out.chan = dma_request_channel(mask_out,
- atmel_tdes_filter, &pdata->dma_slave->txdata);
-
- if (!dd->dma_lch_out.chan)
- goto err_dma_out;
-
- dd->dma_lch_out.dma_conf.direction = DMA_DEV_TO_MEM;
- dd->dma_lch_out.dma_conf.src_addr = dd->phys_base +
- TDES_ODATA1R;
- dd->dma_lch_out.dma_conf.src_maxburst = 1;
- dd->dma_lch_out.dma_conf.src_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_out.dma_conf.dst_maxburst = 1;
- dd->dma_lch_out.dma_conf.dst_addr_width =
- DMA_SLAVE_BUSWIDTH_4_BYTES;
- dd->dma_lch_out.dma_conf.device_fc = false;
-
- return 0;
- } else {
- return -ENODEV;
- }
+ return 0;
err_dma_out:
dma_release_channel(dd->dma_lch_in.chan);
err_dma_in:
+ dev_warn(dd->dev, "no DMA channel available\n");
return err;
}
@@ -1317,6 +1309,47 @@ static void atmel_tdes_get_cap(struct atmel_tdes_dev *dd)
}
}
+#if defined(CONFIG_OF)
+static const struct of_device_id atmel_tdes_dt_ids[] = {
+ { .compatible = "atmel,at91sam9g46-tdes" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, atmel_tdes_dt_ids);
+
+static struct crypto_platform_data *atmel_tdes_of_init(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct crypto_platform_data *pdata;
+
+ if (!np) {
+ dev_err(&pdev->dev, "device node not found\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "could not allocate memory for pdata\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pdata->dma_slave = devm_kzalloc(&pdev->dev,
+ sizeof(*(pdata->dma_slave)),
+ GFP_KERNEL);
+ if (!pdata->dma_slave) {
+ dev_err(&pdev->dev, "could not allocate memory for dma_slave\n");
+ devm_kfree(&pdev->dev, pdata);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return pdata;
+}
+#else /* CONFIG_OF */
+static inline struct crypto_platform_data *atmel_tdes_of_init(struct platform_device *pdev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
static int atmel_tdes_probe(struct platform_device *pdev)
{
struct atmel_tdes_dev *tdes_dd;
@@ -1399,13 +1432,24 @@ static int atmel_tdes_probe(struct platform_device *pdev)
if (tdes_dd->caps.has_dma) {
pdata = pdev->dev.platform_data;
if (!pdata) {
- dev_err(&pdev->dev, "platform data not available\n");
+ pdata = atmel_tdes_of_init(pdev);
+ if (IS_ERR(pdata)) {
+ dev_err(&pdev->dev, "platform data not available\n");
+ err = PTR_ERR(pdata);
+ goto err_pdata;
+ }
+ }
+ if (!pdata->dma_slave) {
err = -ENXIO;
goto err_pdata;
}
err = atmel_tdes_dma_init(tdes_dd, pdata);
if (err)
goto err_tdes_dma;
+
+ dev_info(dev, "using %s, %s for DMA transfers\n",
+ dma_chan_name(tdes_dd->dma_lch_in.chan),
+ dma_chan_name(tdes_dd->dma_lch_out.chan));
}
spin_lock(&atmel_tdes.lock);
@@ -1487,6 +1531,7 @@ static struct platform_driver atmel_tdes_driver = {
.driver = {
.name = "atmel_tdes",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(atmel_tdes_dt_ids),
},
};
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 50cc557abe41..697338772b64 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -115,6 +115,13 @@ config GPIO_CLPS711X
help
Say yes here to support GPIO on CLPS711X SoCs.
+config GPIO_DAVINCI
+ bool "TI Davinci/Keystone GPIO support"
+ default y if ARCH_DAVINCI
+ depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
+ help
+ Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
+
config GPIO_GENERIC_PLATFORM
tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
select GPIO_GENERIC
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 0248471402e4..5d50179ece16 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -22,7 +22,7 @@ obj-$(CONFIG_GPIO_CLPS711X) += gpio-clps711x.o
obj-$(CONFIG_GPIO_CS5535) += gpio-cs5535.o
obj-$(CONFIG_GPIO_DA9052) += gpio-da9052.o
obj-$(CONFIG_GPIO_DA9055) += gpio-da9055.o
-obj-$(CONFIG_ARCH_DAVINCI) += gpio-davinci.o
+obj-$(CONFIG_GPIO_DAVINCI) += gpio-davinci.o
obj-$(CONFIG_GPIO_EM) += gpio-em.o
obj-$(CONFIG_GPIO_EP93XX) += gpio-ep93xx.o
obj-$(CONFIG_GPIO_F7188X) += gpio-f7188x.o
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 84be70157ad6..7629b4f12b7f 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -16,8 +16,13 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/platform_data/gpio-davinci.h>
+#include <linux/irqchip/chained_irq.h>
struct davinci_gpio_regs {
u32 dir;
@@ -82,14 +87,14 @@ static inline int __davinci_direction(struct gpio_chip *chip,
u32 mask = 1 << offset;
spin_lock_irqsave(&d->lock, flags);
- temp = __raw_readl(&g->dir);
+ temp = readl_relaxed(&g->dir);
if (out) {
temp &= ~mask;
- __raw_writel(mask, value ? &g->set_data : &g->clr_data);
+ writel_relaxed(mask, value ? &g->set_data : &g->clr_data);
} else {
temp |= mask;
}
- __raw_writel(temp, &g->dir);
+ writel_relaxed(temp, &g->dir);
spin_unlock_irqrestore(&d->lock, flags);
return 0;
@@ -118,7 +123,7 @@ static int davinci_gpio_get(struct gpio_chip *chip, unsigned offset)
struct davinci_gpio_controller *d = chip2controller(chip);
struct davinci_gpio_regs __iomem *g = d->regs;
- return (1 << offset) & __raw_readl(&g->in_data);
+ return (1 << offset) & readl_relaxed(&g->in_data);
}
/*
@@ -130,7 +135,41 @@ davinci_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
struct davinci_gpio_controller *d = chip2controller(chip);
struct davinci_gpio_regs __iomem *g = d->regs;
- __raw_writel((1 << offset), value ? &g->set_data : &g->clr_data);
+ writel_relaxed((1 << offset), value ? &g->set_data : &g->clr_data);
+}
+
+static struct davinci_gpio_platform_data *
+davinci_gpio_get_pdata(struct platform_device *pdev)
+{
+ struct device_node *dn = pdev->dev.of_node;
+ struct davinci_gpio_platform_data *pdata;
+ int ret;
+ u32 val;
+
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return pdev->dev.platform_data;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ ret = of_property_read_u32(dn, "ti,ngpio", &val);
+ if (ret)
+ goto of_err;
+
+ pdata->ngpio = val;
+
+ ret = of_property_read_u32(dn, "ti,davinci-gpio-unbanked", &val);
+ if (ret)
+ goto of_err;
+
+ pdata->gpio_unbanked = val;
+
+ return pdata;
+
+of_err:
+ dev_err(&pdev->dev, "Populating pdata from DT failed: err %d\n", ret);
+ return NULL;
}
static int davinci_gpio_probe(struct platform_device *pdev)
@@ -143,12 +182,14 @@ static int davinci_gpio_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *res;
- pdata = dev->platform_data;
+ pdata = davinci_gpio_get_pdata(pdev);
if (!pdata) {
dev_err(dev, "No platform data found\n");
return -EINVAL;
}
+ dev->platform_data = pdata;
+
/*
* The gpio banks conceptually expose a segmented bitmap,
* and "ngpio" is one more than the largest zero-based
@@ -160,8 +201,8 @@ static int davinci_gpio_probe(struct platform_device *pdev)
return -EINVAL;
}
- if (WARN_ON(DAVINCI_N_GPIO < ngpio))
- ngpio = DAVINCI_N_GPIO;
+ if (WARN_ON(ARCH_NR_GPIOS < ngpio))
+ ngpio = ARCH_NR_GPIOS;
chips = devm_kzalloc(dev,
ngpio * sizeof(struct davinci_gpio_controller),
@@ -194,6 +235,9 @@ static int davinci_gpio_probe(struct platform_device *pdev)
if (chips[i].chip.ngpio > 32)
chips[i].chip.ngpio = 32;
+#ifdef CONFIG_OF_GPIO
+ chips[i].chip.of_node = dev->of_node;
+#endif
spin_lock_init(&chips[i].lock);
regs = gpio2regs(base);
@@ -227,8 +271,8 @@ static void gpio_irq_disable(struct irq_data *d)
struct davinci_gpio_regs __iomem *g = irq2regs(d->irq);
u32 mask = (u32) irq_data_get_irq_handler_data(d);
- __raw_writel(mask, &g->clr_falling);
- __raw_writel(mask, &g->clr_rising);
+ writel_relaxed(mask, &g->clr_falling);
+ writel_relaxed(mask, &g->clr_rising);
}
static void gpio_irq_enable(struct irq_data *d)
@@ -242,9 +286,9 @@ static void gpio_irq_enable(struct irq_data *d)
status = IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
if (status & IRQ_TYPE_EDGE_FALLING)
- __raw_writel(mask, &g->set_falling);
+ writel_relaxed(mask, &g->set_falling);
if (status & IRQ_TYPE_EDGE_RISING)
- __raw_writel(mask, &g->set_rising);
+ writel_relaxed(mask, &g->set_rising);
}
static int gpio_irq_type(struct irq_data *d, unsigned trigger)
@@ -278,34 +322,28 @@ gpio_irq_handler(unsigned irq, struct irq_desc *desc)
mask <<= 16;
/* temporarily mask (level sensitive) parent IRQ */
- desc->irq_data.chip->irq_mask(&desc->irq_data);
- desc->irq_data.chip->irq_ack(&desc->irq_data);
+ chained_irq_enter(irq_desc_get_chip(desc), desc);
while (1) {
u32 status;
- int n;
- int res;
+ int bit;
/* ack any irqs */
- status = __raw_readl(&g->intstat) & mask;
+ status = readl_relaxed(&g->intstat) & mask;
if (!status)
break;
- __raw_writel(status, &g->intstat);
+ writel_relaxed(status, &g->intstat);
/* now demux them to the right lowlevel handler */
- n = d->irq_base;
- if (irq & 1) {
- n += 16;
- status >>= 16;
- }
while (status) {
- res = ffs(status);
- n += res;
- generic_handle_irq(n - 1);
- status >>= res;
+ bit = __ffs(status);
+ status &= ~BIT(bit);
+ generic_handle_irq(
+ irq_find_mapping(d->irq_domain,
+ d->chip.base + bit));
}
}
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
+ chained_irq_exit(irq_desc_get_chip(desc), desc);
/* now it may re-trigger */
}
@@ -313,10 +351,10 @@ static int gpio_to_irq_banked(struct gpio_chip *chip, unsigned offset)
{
struct davinci_gpio_controller *d = chip2controller(chip);
- if (d->irq_base >= 0)
- return d->irq_base + offset;
+ if (d->irq_domain)
+ return irq_create_mapping(d->irq_domain, d->chip.base + offset);
else
- return -ENODEV;
+ return -ENXIO;
}
static int gpio_to_irq_unbanked(struct gpio_chip *chip, unsigned offset)
@@ -346,14 +384,35 @@ static int gpio_irq_type_unbanked(struct irq_data *data, unsigned trigger)
if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
return -EINVAL;
- __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_FALLING)
+ writel_relaxed(mask, (trigger & IRQ_TYPE_EDGE_FALLING)
? &g->set_falling : &g->clr_falling);
- __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_RISING)
+ writel_relaxed(mask, (trigger & IRQ_TYPE_EDGE_RISING)
? &g->set_rising : &g->clr_rising);
return 0;
}
+static int
+davinci_gpio_irq_map(struct irq_domain *d, unsigned int irq,
+ irq_hw_number_t hw)
+{
+ struct davinci_gpio_regs __iomem *g = gpio2regs(hw);
+
+ irq_set_chip_and_handler_name(irq, &gpio_irqchip, handle_simple_irq,
+ "davinci_gpio");
+ irq_set_irq_type(irq, IRQ_TYPE_NONE);
+ irq_set_chip_data(irq, (__force void *)g);
+ irq_set_handler_data(irq, (void *)__gpio_mask(hw));
+ set_irq_flags(irq, IRQF_VALID);
+
+ return 0;
+}
+
+static const struct irq_domain_ops davinci_gpio_irq_ops = {
+ .map = davinci_gpio_irq_map,
+ .xlate = irq_domain_xlate_onetwocell,
+};
+
/*
* NOTE: for suspend/resume, probably best to make a platform_device with
* suspend_late/resume_resume calls hooking into results of the set_wake()
@@ -373,6 +432,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
struct davinci_gpio_controller *chips = platform_get_drvdata(pdev);
struct davinci_gpio_platform_data *pdata = dev->platform_data;
struct davinci_gpio_regs __iomem *g;
+ struct irq_domain *irq_domain = NULL;
ngpio = pdata->ngpio;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@@ -396,6 +456,22 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
}
clk_prepare_enable(clk);
+ if (!pdata->gpio_unbanked) {
+ irq = irq_alloc_descs(-1, 0, ngpio, 0);
+ if (irq < 0) {
+ dev_err(dev, "Couldn't allocate IRQ numbers\n");
+ return irq;
+ }
+
+ irq_domain = irq_domain_add_legacy(NULL, ngpio, irq, 0,
+ &davinci_gpio_irq_ops,
+ chips);
+ if (!irq_domain) {
+ dev_err(dev, "Couldn't register an IRQ domain\n");
+ return -ENODEV;
+ }
+ }
+
/*
* Arrange gpio_to_irq() support, handling either direct IRQs or
* banked IRQs. Having GPIOs in the first GPIO bank use direct
@@ -404,9 +480,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
*/
for (gpio = 0, bank = 0; gpio < ngpio; bank++, gpio += 32) {
chips[bank].chip.to_irq = gpio_to_irq_banked;
- chips[bank].irq_base = pdata->gpio_unbanked
- ? -EINVAL
- : (pdata->intc_irq_num + gpio);
+ chips[bank].irq_domain = irq_domain;
}
/*
@@ -432,8 +506,8 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
/* default trigger: both edges */
g = gpio2regs(0);
- __raw_writel(~0, &g->set_falling);
- __raw_writel(~0, &g->set_rising);
+ writel_relaxed(~0, &g->set_falling);
+ writel_relaxed(~0, &g->set_rising);
/* set the direct IRQs up to use that irqchip */
for (gpio = 0; gpio < pdata->gpio_unbanked; gpio++, irq++) {
@@ -449,15 +523,11 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
* Or, AINTC can handle IRQs for banks of 16 GPIO IRQs, which we
* then chain through our own handler.
*/
- for (gpio = 0, irq = gpio_to_irq(0), bank = 0;
- gpio < ngpio;
- bank++, bank_irq++) {
- unsigned i;
-
+ for (gpio = 0, bank = 0; gpio < ngpio; bank++, bank_irq++, gpio += 16) {
/* disabled by default, enabled only as needed */
g = gpio2regs(gpio);
- __raw_writel(~0, &g->clr_falling);
- __raw_writel(~0, &g->clr_rising);
+ writel_relaxed(~0, &g->clr_falling);
+ writel_relaxed(~0, &g->clr_rising);
/* set up all irqs in this bank */
irq_set_chained_handler(bank_irq, gpio_irq_handler);
@@ -469,14 +539,6 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
*/
irq_set_handler_data(bank_irq, &chips[gpio / 32]);
- for (i = 0; i < 16 && gpio < ngpio; i++, irq++, gpio++) {
- irq_set_chip(irq, &gpio_irqchip);
- irq_set_chip_data(irq, (__force void *)g);
- irq_set_handler_data(irq, (void *)__gpio_mask(gpio));
- irq_set_handler(irq, handle_simple_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
binten |= BIT(bank);
}
@@ -485,18 +547,25 @@ done:
* BINTEN -- per-bank interrupt enable. genirq would also let these
* bits be set/cleared dynamically.
*/
- __raw_writel(binten, gpio_base + BINTEN);
-
- printk(KERN_INFO "DaVinci: %d gpio irqs\n", irq - gpio_to_irq(0));
+ writel_relaxed(binten, gpio_base + BINTEN);
return 0;
}
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id davinci_gpio_ids[] = {
+ { .compatible = "ti,dm6441-gpio", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, davinci_gpio_ids);
+#endif
+
static struct platform_driver davinci_gpio_driver = {
.probe = davinci_gpio_probe,
.driver = {
- .name = "davinci_gpio",
- .owner = THIS_MODULE,
+ .name = "davinci_gpio",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(davinci_gpio_ids),
},
};
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 868ed40cb6bf..40e6440348ff 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -171,8 +171,7 @@ static struct irq_domain_ops combiner_irq_domain_ops = {
static void __init combiner_init(void __iomem *combiner_base,
struct device_node *np,
- unsigned int max_nr,
- int irq_base)
+ unsigned int max_nr)
{
int i, irq;
unsigned int nr_irq;
@@ -186,7 +185,7 @@ static void __init combiner_init(void __iomem *combiner_base,
return;
}
- combiner_irq_domain = irq_domain_add_simple(np, nr_irq, irq_base,
+ combiner_irq_domain = irq_domain_add_linear(np, nr_irq,
&combiner_irq_domain_ops, combiner_data);
if (WARN_ON(!combiner_irq_domain)) {
pr_warning("%s: irq domain init failed\n", __func__);
@@ -207,7 +206,6 @@ static int __init combiner_of_init(struct device_node *np,
{
void __iomem *combiner_base;
unsigned int max_nr = 20;
- int irq_base = -1;
combiner_base = of_iomap(np, 0);
if (!combiner_base) {
@@ -221,14 +219,7 @@ static int __init combiner_of_init(struct device_node *np,
__func__, max_nr);
}
- /*
- * FIXME: This is a hardwired COMBINER_IRQ(0,0). Once all devices
- * get their IRQ from DT, remove this in order to get dynamic
- * allocation.
- */
- irq_base = 160;
-
- combiner_init(combiner_base, np, max_nr, irq_base);
+ combiner_init(combiner_base, np, max_nr);
return 0;
}
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index 2f404ba61c6c..8777065012a5 100644
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -81,15 +81,12 @@ static void irqc_irq_disable(struct irq_data *d)
iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_STS);
}
-#define INTC_IRQ_SENSE_VALID 0x10
-#define INTC_IRQ_SENSE(x) (x + INTC_IRQ_SENSE_VALID)
-
static unsigned char irqc_sense[IRQ_TYPE_SENSE_MASK + 1] = {
- [IRQ_TYPE_LEVEL_LOW] = INTC_IRQ_SENSE(0x01),
- [IRQ_TYPE_LEVEL_HIGH] = INTC_IRQ_SENSE(0x02),
- [IRQ_TYPE_EDGE_FALLING] = INTC_IRQ_SENSE(0x04), /* Synchronous */
- [IRQ_TYPE_EDGE_RISING] = INTC_IRQ_SENSE(0x08), /* Synchronous */
- [IRQ_TYPE_EDGE_BOTH] = INTC_IRQ_SENSE(0x0c), /* Synchronous */
+ [IRQ_TYPE_LEVEL_LOW] = 0x01,
+ [IRQ_TYPE_LEVEL_HIGH] = 0x02,
+ [IRQ_TYPE_EDGE_FALLING] = 0x04, /* Synchronous */
+ [IRQ_TYPE_EDGE_RISING] = 0x08, /* Synchronous */
+ [IRQ_TYPE_EDGE_BOTH] = 0x0c, /* Synchronous */
};
static int irqc_irq_set_type(struct irq_data *d, unsigned int type)
@@ -101,12 +98,12 @@ static int irqc_irq_set_type(struct irq_data *d, unsigned int type)
irqc_dbg(&p->irq[hw_irq], "sense");
- if (!(value & INTC_IRQ_SENSE_VALID))
+ if (!value)
return -EINVAL;
tmp = ioread32(p->iomem + IRQC_CONFIG(hw_irq));
tmp &= ~0x3f;
- tmp |= value ^ INTC_IRQ_SENSE_VALID;
+ tmp |= value;
iowrite32(tmp, p->iomem + IRQC_CONFIG(hw_irq));
return 0;
}
@@ -212,10 +209,8 @@ static int irqc_probe(struct platform_device *pdev)
irq_chip->name = name;
irq_chip->irq_mask = irqc_irq_disable;
irq_chip->irq_unmask = irqc_irq_enable;
- irq_chip->irq_enable = irqc_irq_enable;
- irq_chip->irq_disable = irqc_irq_disable;
irq_chip->irq_set_type = irqc_irq_set_type;
- irq_chip->flags = IRQCHIP_SKIP_SET_WAKE;
+ irq_chip->flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
p->number_of_irqs,
diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c
index 47a52ab580d8..3ae2bb8d9cf2 100644
--- a/drivers/irqchip/irq-versatile-fpga.c
+++ b/drivers/irqchip/irq-versatile-fpga.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/exception.h>
#include <asm/mach/irq.h>
@@ -167,8 +168,12 @@ void __init fpga_irq_init(void __iomem *base, const char *name, int irq_start,
f->used_irqs++;
}
- pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs\n",
+ pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs",
fpga_irq_id, name, base, f->used_irqs);
+ if (parent_irq != -1)
+ pr_cont(", parent IRQ: %d\n", parent_irq);
+ else
+ pr_cont("\n");
fpga_irq_id++;
}
@@ -180,6 +185,7 @@ int __init fpga_irq_of_init(struct device_node *node,
void __iomem *base;
u32 clear_mask;
u32 valid_mask;
+ int parent_irq;
if (WARN_ON(!node))
return -ENODEV;
@@ -193,7 +199,12 @@ int __init fpga_irq_of_init(struct device_node *node,
if (of_property_read_u32(node, "valid-mask", &valid_mask))
valid_mask = 0;
- fpga_irq_init(base, node->name, 0, -1, valid_mask, node);
+ /* Some chips are cascaded from a parent IRQ */
+ parent_irq = irq_of_parse_and_map(node, 0);
+ if (!parent_irq)
+ parent_irq = -1;
+
+ fpga_irq_init(base, node->name, 0, parent_irq, valid_mask, node);
writel(clear_mask, base + IRQ_ENABLE_CLEAR);
writel(clear_mask, base + FIQ_ENABLE_CLEAR);
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 7fc5099e44b2..4e8ca9d5570f 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -324,7 +324,7 @@ config MMC_ATMELMCI
config MMC_MSM
tristate "Qualcomm SDCC Controller Support"
- depends on MMC && ARCH_MSM
+ depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
help
This provides support for the SD/MMC cell found in the
MSM and QSD SOCs from Qualcomm. The controller also has
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 007730222116..b1328a45b095 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -304,6 +304,17 @@ config RTC_DRV_ISL12022
This driver can also be built as a module. If so, the module
will be called rtc-isl12022.
+config RTC_DRV_ISL12057
+ depends on I2C
+ select REGMAP_I2C
+ tristate "Intersil ISL12057"
+ help
+ If you say yes here you get support for the Intersil ISL12057
+ I2C RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-isl12057.
+
config RTC_DRV_X1205
tristate "Xicor/Intersil X1205"
help
@@ -1104,6 +1115,13 @@ config RTC_DRV_SUN4V
If you say Y here you will get support for the Hypervisor
based RTC on SUN4V systems.
+config RTC_DRV_SUNXI
+ tristate "Allwinner sun4i/sun7i RTC"
+ depends on ARCH_SUNXI
+ help
+ If you say Y here you will get support for the RTC found on
+ Allwinner A10/A20.
+
config RTC_DRV_STARFIRE
bool "Starfire RTC"
depends on SPARC64
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 27b4bd884066..c00741a0bf10 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_RTC_DRV_HID_SENSOR_TIME) += rtc-hid-sensor-time.o
obj-$(CONFIG_RTC_DRV_IMXDI) += rtc-imxdi.o
obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
obj-$(CONFIG_RTC_DRV_ISL12022) += rtc-isl12022.o
+obj-$(CONFIG_RTC_DRV_ISL12057) += rtc-isl12057.o
obj-$(CONFIG_RTC_DRV_JZ4740) += rtc-jz4740.o
obj-$(CONFIG_RTC_DRV_LP8788) += rtc-lp8788.o
obj-$(CONFIG_RTC_DRV_LPC32XX) += rtc-lpc32xx.o
@@ -117,6 +118,7 @@ obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o
obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
obj-$(CONFIG_RTC_DRV_STMP) += rtc-stmp3xxx.o
obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o
+obj-$(CONFIG_RTC_DRV_SUNXI) += rtc-sunxi.o
obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
obj-$(CONFIG_RTC_DRV_TILE) += rtc-tile.o
diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
new file mode 100644
index 000000000000..7854a656628f
--- /dev/null
+++ b/drivers/rtc/rtc-isl12057.c
@@ -0,0 +1,310 @@
+/*
+ * rtc-isl12057 - Driver for Intersil ISL12057 I2C Real Time Clock
+ *
+ * Copyright (C) 2013, Arnaud EBALARD <arno@natisbad.org>
+ *
+ * This work is largely based on Intersil ISL1208 driver developed by
+ * Hebert Valerio Riedel <hvr@gnu.org>.
+ *
+ * Detailed datasheet on which this development is based is available here:
+ *
+ * http://natisbad.org/NAS2/refs/ISL12057.pdf
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/rtc.h>
+#include <linux/i2c.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+
+#define DRV_NAME "rtc-isl12057"
+
+/* RTC section */
+#define ISL12057_REG_RTC_SC 0x00 /* Seconds */
+#define ISL12057_REG_RTC_MN 0x01 /* Minutes */
+#define ISL12057_REG_RTC_HR 0x02 /* Hours */
+#define ISL12057_REG_RTC_HR_PM BIT(5) /* AM/PM bit in 12h format */
+#define ISL12057_REG_RTC_HR_MIL BIT(6) /* 24h/12h format */
+#define ISL12057_REG_RTC_DW 0x03 /* Day of the Week */
+#define ISL12057_REG_RTC_DT 0x04 /* Date */
+#define ISL12057_REG_RTC_MO 0x05 /* Month */
+#define ISL12057_REG_RTC_YR 0x06 /* Year */
+#define ISL12057_RTC_SEC_LEN 7
+
+/* Alarm 1 section */
+#define ISL12057_REG_A1_SC 0x07 /* Alarm 1 Seconds */
+#define ISL12057_REG_A1_MN 0x08 /* Alarm 1 Minutes */
+#define ISL12057_REG_A1_HR 0x09 /* Alarm 1 Hours */
+#define ISL12057_REG_A1_HR_PM BIT(5) /* AM/PM bit in 12h format */
+#define ISL12057_REG_A1_HR_MIL BIT(6) /* 24h/12h format */
+#define ISL12057_REG_A1_DWDT 0x0A /* Alarm 1 Date / Day of the week */
+#define ISL12057_REG_A1_DWDT_B BIT(6) /* DW / DT selection bit */
+#define ISL12057_A1_SEC_LEN 4
+
+/* Alarm 2 section */
+#define ISL12057_REG_A2_MN 0x0B /* Alarm 2 Minutes */
+#define ISL12057_REG_A2_HR 0x0C /* Alarm 2 Hours */
+#define ISL12057_REG_A2_DWDT 0x0D /* Alarm 2 Date / Day of the week */
+#define ISL12057_A2_SEC_LEN 3
+
+/* Control/Status registers */
+#define ISL12057_REG_INT 0x0E
+#define ISL12057_REG_INT_A1IE BIT(0) /* Alarm 1 interrupt enable bit */
+#define ISL12057_REG_INT_A2IE BIT(1) /* Alarm 2 interrupt enable bit */
+#define ISL12057_REG_INT_INTCN BIT(2) /* Interrupt control enable bit */
+#define ISL12057_REG_INT_RS1 BIT(3) /* Freq out control bit 1 */
+#define ISL12057_REG_INT_RS2 BIT(4) /* Freq out control bit 2 */
+#define ISL12057_REG_INT_EOSC BIT(7) /* Oscillator enable bit */
+
+#define ISL12057_REG_SR 0x0F
+#define ISL12057_REG_SR_A1F BIT(0) /* Alarm 1 interrupt bit */
+#define ISL12057_REG_SR_A2F BIT(1) /* Alarm 2 interrupt bit */
+#define ISL12057_REG_SR_OSF BIT(7) /* Oscillator failure bit */
+
+/* Register memory map length */
+#define ISL12057_MEM_MAP_LEN 0x10
+
+struct isl12057_rtc_data {
+ struct regmap *regmap;
+ struct mutex lock;
+};
+
+static void isl12057_rtc_regs_to_tm(struct rtc_time *tm, u8 *regs)
+{
+ tm->tm_sec = bcd2bin(regs[ISL12057_REG_RTC_SC]);
+ tm->tm_min = bcd2bin(regs[ISL12057_REG_RTC_MN]);
+
+ if (regs[ISL12057_REG_RTC_HR] & ISL12057_REG_RTC_HR_MIL) { /* AM/PM */
+ tm->tm_hour = bcd2bin(regs[ISL12057_REG_RTC_HR] & 0x0f);
+ if (regs[ISL12057_REG_RTC_HR] & ISL12057_REG_RTC_HR_PM)
+ tm->tm_hour += 12;
+ } else { /* 24 hour mode */
+ tm->tm_hour = bcd2bin(regs[ISL12057_REG_RTC_HR] & 0x3f);
+ }
+
+ tm->tm_mday = bcd2bin(regs[ISL12057_REG_RTC_DT]);
+ tm->tm_wday = bcd2bin(regs[ISL12057_REG_RTC_DW]) - 1; /* starts at 1 */
+ tm->tm_mon = bcd2bin(regs[ISL12057_REG_RTC_MO]) - 1; /* starts at 1 */
+ tm->tm_year = bcd2bin(regs[ISL12057_REG_RTC_YR]) + 100;
+}
+
+static int isl12057_rtc_tm_to_regs(u8 *regs, struct rtc_time *tm)
+{
+ /*
+ * The clock has an 8 bit wide bcd-coded register for the year.
+ * tm_year is an offset from 1900 and we are interested in the
+ * 2000-2099 range, so any value less than 100 is invalid.
+ */
+ if (tm->tm_year < 100)
+ return -EINVAL;
+
+ regs[ISL12057_REG_RTC_SC] = bin2bcd(tm->tm_sec);
+ regs[ISL12057_REG_RTC_MN] = bin2bcd(tm->tm_min);
+ regs[ISL12057_REG_RTC_HR] = bin2bcd(tm->tm_hour); /* 24-hour format */
+ regs[ISL12057_REG_RTC_DT] = bin2bcd(tm->tm_mday);
+ regs[ISL12057_REG_RTC_MO] = bin2bcd(tm->tm_mon + 1);
+ regs[ISL12057_REG_RTC_YR] = bin2bcd(tm->tm_year - 100);
+ regs[ISL12057_REG_RTC_DW] = bin2bcd(tm->tm_wday + 1);
+
+ return 0;
+}
+
+/*
+ * Try and match register bits w/ fixed null values to see whether we
+ * are dealing with an ISL12057. Note: this function is called early
+ * during init and hence does need mutex protection.
+ */
+static int isl12057_i2c_validate_chip(struct regmap *regmap)
+{
+ u8 regs[ISL12057_MEM_MAP_LEN];
+ static const u8 mask[ISL12057_MEM_MAP_LEN] = { 0x80, 0x80, 0x80, 0xf8,
+ 0xc0, 0x60, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x60, 0x7c };
+ int ret, i;
+
+ ret = regmap_bulk_read(regmap, 0, regs, ISL12057_MEM_MAP_LEN);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < ISL12057_MEM_MAP_LEN; ++i) {
+ if (regs[i] & mask[i]) /* check if bits are cleared */
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int isl12057_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct isl12057_rtc_data *data = dev_get_drvdata(dev);
+ u8 regs[ISL12057_RTC_SEC_LEN];
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_bulk_read(data->regmap, ISL12057_REG_RTC_SC, regs,
+ ISL12057_RTC_SEC_LEN);
+ mutex_unlock(&data->lock);
+
+ if (ret) {
+ dev_err(dev, "%s: RTC read failed\n", __func__);
+ return ret;
+ }
+
+ isl12057_rtc_regs_to_tm(tm, regs);
+
+ return rtc_valid_tm(tm);
+}
+
+static int isl12057_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct isl12057_rtc_data *data = dev_get_drvdata(dev);
+ u8 regs[ISL12057_RTC_SEC_LEN];
+ int ret;
+
+ ret = isl12057_rtc_tm_to_regs(regs, tm);
+ if (ret)
+ return ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_bulk_write(data->regmap, ISL12057_REG_RTC_SC, regs,
+ ISL12057_RTC_SEC_LEN);
+ mutex_unlock(&data->lock);
+
+ if (ret)
+ dev_err(dev, "%s: RTC write failed\n", __func__);
+
+ return ret;
+}
+
+/*
+ * Check current RTC status and enable/disable what needs to be. Return 0 if
+ * everything went ok and a negative value upon error. Note: this function
+ * is called early during init and hence does need mutex protection.
+ */
+static int isl12057_check_rtc_status(struct device *dev, struct regmap *regmap)
+{
+ int ret;
+
+ /* Enable oscillator if not already running */
+ ret = regmap_update_bits(regmap, ISL12057_REG_INT,
+ ISL12057_REG_INT_EOSC, 0);
+ if (ret < 0) {
+ dev_err(dev, "Unable to enable oscillator\n");
+ return ret;
+ }
+
+ /* Clear oscillator failure bit if needed */
+ ret = regmap_update_bits(regmap, ISL12057_REG_SR,
+ ISL12057_REG_SR_OSF, 0);
+ if (ret < 0) {
+ dev_err(dev, "Unable to clear oscillator failure bit\n");
+ return ret;
+ }
+
+ /* Clear alarm bit if needed */
+ ret = regmap_update_bits(regmap, ISL12057_REG_SR,
+ ISL12057_REG_SR_A1F, 0);
+ if (ret < 0) {
+ dev_err(dev, "Unable to clear alarm bit\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct rtc_class_ops rtc_ops = {
+ .read_time = isl12057_rtc_read_time,
+ .set_time = isl12057_rtc_set_time,
+};
+
+static struct regmap_config isl12057_rtc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int isl12057_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct isl12057_rtc_data *data;
+ struct rtc_device *rtc;
+ struct regmap *regmap;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -ENODEV;
+
+ regmap = devm_regmap_init_i2c(client, &isl12057_rtc_regmap_config);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(dev, "regmap allocation failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = isl12057_i2c_validate_chip(regmap);
+ if (ret)
+ return ret;
+
+ ret = isl12057_check_rtc_status(dev, regmap);
+ if (ret)
+ return ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ mutex_init(&data->lock);
+ data->regmap = regmap;
+ dev_set_drvdata(dev, data);
+
+ rtc = devm_rtc_device_register(dev, DRV_NAME, &rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static struct of_device_id isl12057_dt_match[] = {
+ { .compatible = "isl,isl12057" },
+ { },
+};
+#endif
+
+static const struct i2c_device_id isl12057_id[] = {
+ { "isl12057", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, isl12057_id);
+
+static struct i2c_driver isl12057_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(isl12057_dt_match),
+ },
+ .probe = isl12057_probe,
+ .id_table = isl12057_id,
+};
+module_i2c_driver(isl12057_driver);
+
+MODULE_AUTHOR("Arnaud EBALARD <arno@natisbad.org>");
+MODULE_DESCRIPTION("Intersil ISL12057 RTC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-sunxi.c b/drivers/rtc/rtc-sunxi.c
new file mode 100644
index 000000000000..68a35284e5ad
--- /dev/null
+++ b/drivers/rtc/rtc-sunxi.c
@@ -0,0 +1,523 @@
+/*
+ * An RTC driver for Allwinner A10/A20
+ *
+ * Copyright (c) 2013, Carlo Caione <carlo.caione@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/types.h>
+
+#define SUNXI_LOSC_CTRL 0x0000
+#define SUNXI_LOSC_CTRL_RTC_HMS_ACC BIT(8)
+#define SUNXI_LOSC_CTRL_RTC_YMD_ACC BIT(7)
+
+#define SUNXI_RTC_YMD 0x0004
+
+#define SUNXI_RTC_HMS 0x0008
+
+#define SUNXI_ALRM_DHMS 0x000c
+
+#define SUNXI_ALRM_EN 0x0014
+#define SUNXI_ALRM_EN_CNT_EN BIT(8)
+
+#define SUNXI_ALRM_IRQ_EN 0x0018
+#define SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN BIT(0)
+
+#define SUNXI_ALRM_IRQ_STA 0x001c
+#define SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND BIT(0)
+
+#define SUNXI_MASK_DH 0x0000001f
+#define SUNXI_MASK_SM 0x0000003f
+#define SUNXI_MASK_M 0x0000000f
+#define SUNXI_MASK_LY 0x00000001
+#define SUNXI_MASK_D 0x00000ffe
+#define SUNXI_MASK_M 0x0000000f
+
+#define SUNXI_GET(x, mask, shift) (((x) & ((mask) << (shift))) \
+ >> (shift))
+
+#define SUNXI_SET(x, mask, shift) (((x) & (mask)) << (shift))
+
+/*
+ * Get date values
+ */
+#define SUNXI_DATE_GET_DAY_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 0)
+#define SUNXI_DATE_GET_MON_VALUE(x) SUNXI_GET(x, SUNXI_MASK_M, 8)
+#define SUNXI_DATE_GET_YEAR_VALUE(x, mask) SUNXI_GET(x, mask, 16)
+
+/*
+ * Get time values
+ */
+#define SUNXI_TIME_GET_SEC_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 0)
+#define SUNXI_TIME_GET_MIN_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 8)
+#define SUNXI_TIME_GET_HOUR_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 16)
+
+/*
+ * Get alarm values
+ */
+#define SUNXI_ALRM_GET_SEC_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 0)
+#define SUNXI_ALRM_GET_MIN_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 8)
+#define SUNXI_ALRM_GET_HOUR_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 16)
+
+/*
+ * Set date values
+ */
+#define SUNXI_DATE_SET_DAY_VALUE(x) SUNXI_DATE_GET_DAY_VALUE(x)
+#define SUNXI_DATE_SET_MON_VALUE(x) SUNXI_SET(x, SUNXI_MASK_M, 8)
+#define SUNXI_DATE_SET_YEAR_VALUE(x, mask) SUNXI_SET(x, mask, 16)
+#define SUNXI_LEAP_SET_VALUE(x, shift) SUNXI_SET(x, SUNXI_MASK_LY, shift)
+
+/*
+ * Set time values
+ */
+#define SUNXI_TIME_SET_SEC_VALUE(x) SUNXI_TIME_GET_SEC_VALUE(x)
+#define SUNXI_TIME_SET_MIN_VALUE(x) SUNXI_SET(x, SUNXI_MASK_SM, 8)
+#define SUNXI_TIME_SET_HOUR_VALUE(x) SUNXI_SET(x, SUNXI_MASK_DH, 16)
+
+/*
+ * Set alarm values
+ */
+#define SUNXI_ALRM_SET_SEC_VALUE(x) SUNXI_ALRM_GET_SEC_VALUE(x)
+#define SUNXI_ALRM_SET_MIN_VALUE(x) SUNXI_SET(x, SUNXI_MASK_SM, 8)
+#define SUNXI_ALRM_SET_HOUR_VALUE(x) SUNXI_SET(x, SUNXI_MASK_DH, 16)
+#define SUNXI_ALRM_SET_DAY_VALUE(x) SUNXI_SET(x, SUNXI_MASK_D, 21)
+
+/*
+ * Time unit conversions
+ */
+#define SEC_IN_MIN 60
+#define SEC_IN_HOUR (60 * SEC_IN_MIN)
+#define SEC_IN_DAY (24 * SEC_IN_HOUR)
+
+/*
+ * The year parameter passed to the driver is usually an offset relative to
+ * the year 1900. This macro is used to convert this offset to another one
+ * relative to the minimum year allowed by the hardware.
+ */
+#define SUNXI_YEAR_OFF(x) ((x)->min - 1900)
+
+/*
+ * min and max year are arbitrary set considering the limited range of the
+ * hardware register field
+ */
+struct sunxi_rtc_data_year {
+ unsigned int min; /* min year allowed */
+ unsigned int max; /* max year allowed */
+ unsigned int mask; /* mask for the year field */
+ unsigned char leap_shift; /* bit shift to get the leap year */
+};
+
+static struct sunxi_rtc_data_year data_year_param[] = {
+ [0] = {
+ .min = 2010,
+ .max = 2073,
+ .mask = 0x3f,
+ .leap_shift = 22,
+ },
+ [1] = {
+ .min = 1970,
+ .max = 2225,
+ .mask = 0xff,
+ .leap_shift = 24,
+ },
+};
+
+struct sunxi_rtc_dev {
+ struct rtc_device *rtc;
+ struct device *dev;
+ struct sunxi_rtc_data_year *data_year;
+ void __iomem *base;
+ int irq;
+};
+
+static irqreturn_t sunxi_rtc_alarmirq(int irq, void *id)
+{
+ struct sunxi_rtc_dev *chip = (struct sunxi_rtc_dev *) id;
+ u32 val;
+
+ val = readl(chip->base + SUNXI_ALRM_IRQ_STA);
+
+ if (val & SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND) {
+ val |= SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND;
+ writel(val, chip->base + SUNXI_ALRM_IRQ_STA);
+
+ rtc_update_irq(chip->rtc, 1, RTC_AF | RTC_IRQF);
+
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+static void sunxi_rtc_setaie(int to, struct sunxi_rtc_dev *chip)
+{
+ u32 alrm_val = 0;
+ u32 alrm_irq_val = 0;
+
+ if (to) {
+ alrm_val = readl(chip->base + SUNXI_ALRM_EN);
+ alrm_val |= SUNXI_ALRM_EN_CNT_EN;
+
+ alrm_irq_val = readl(chip->base + SUNXI_ALRM_IRQ_EN);
+ alrm_irq_val |= SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN;
+ } else {
+ writel(SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND,
+ chip->base + SUNXI_ALRM_IRQ_STA);
+ }
+
+ writel(alrm_val, chip->base + SUNXI_ALRM_EN);
+ writel(alrm_irq_val, chip->base + SUNXI_ALRM_IRQ_EN);
+}
+
+static int sunxi_rtc_getalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
+{
+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
+ struct rtc_time *alrm_tm = &wkalrm->time;
+ u32 alrm;
+ u32 alrm_en;
+ u32 date;
+
+ alrm = readl(chip->base + SUNXI_ALRM_DHMS);
+ date = readl(chip->base + SUNXI_RTC_YMD);
+
+ alrm_tm->tm_sec = SUNXI_ALRM_GET_SEC_VALUE(alrm);
+ alrm_tm->tm_min = SUNXI_ALRM_GET_MIN_VALUE(alrm);
+ alrm_tm->tm_hour = SUNXI_ALRM_GET_HOUR_VALUE(alrm);
+
+ alrm_tm->tm_mday = SUNXI_DATE_GET_DAY_VALUE(date);
+ alrm_tm->tm_mon = SUNXI_DATE_GET_MON_VALUE(date);
+ alrm_tm->tm_year = SUNXI_DATE_GET_YEAR_VALUE(date,
+ chip->data_year->mask);
+
+ alrm_tm->tm_mon -= 1;
+
+ /*
+ * switch from (data_year->min)-relative offset to
+ * a (1900)-relative one
+ */
+ alrm_tm->tm_year += SUNXI_YEAR_OFF(chip->data_year);
+
+ alrm_en = readl(chip->base + SUNXI_ALRM_IRQ_EN);
+ if (alrm_en & SUNXI_ALRM_EN_CNT_EN)
+ wkalrm->enabled = 1;
+
+ return 0;
+}
+
+static int sunxi_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
+{
+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
+ u32 date, time;
+
+ /*
+ * read again in case it changes
+ */
+ do {
+ date = readl(chip->base + SUNXI_RTC_YMD);
+ time = readl(chip->base + SUNXI_RTC_HMS);
+ } while ((date != readl(chip->base + SUNXI_RTC_YMD)) ||
+ (time != readl(chip->base + SUNXI_RTC_HMS)));
+
+ rtc_tm->tm_sec = SUNXI_TIME_GET_SEC_VALUE(time);
+ rtc_tm->tm_min = SUNXI_TIME_GET_MIN_VALUE(time);
+ rtc_tm->tm_hour = SUNXI_TIME_GET_HOUR_VALUE(time);
+
+ rtc_tm->tm_mday = SUNXI_DATE_GET_DAY_VALUE(date);
+ rtc_tm->tm_mon = SUNXI_DATE_GET_MON_VALUE(date);
+ rtc_tm->tm_year = SUNXI_DATE_GET_YEAR_VALUE(date,
+ chip->data_year->mask);
+
+ rtc_tm->tm_mon -= 1;
+
+ /*
+ * switch from (data_year->min)-relative offset to
+ * a (1900)-relative one
+ */
+ rtc_tm->tm_year += SUNXI_YEAR_OFF(chip->data_year);
+
+ return rtc_valid_tm(rtc_tm);
+}
+
+static int sunxi_rtc_setalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
+{
+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
+ struct rtc_time *alrm_tm = &wkalrm->time;
+ struct rtc_time tm_now;
+ u32 alrm = 0;
+ unsigned long time_now = 0;
+ unsigned long time_set = 0;
+ unsigned long time_gap = 0;
+ unsigned long time_gap_day = 0;
+ unsigned long time_gap_hour = 0;
+ unsigned long time_gap_min = 0;
+ int ret = 0;
+
+ ret = sunxi_rtc_gettime(dev, &tm_now);
+ if (ret < 0) {
+ dev_err(dev, "Error in getting time\n");
+ return -EINVAL;
+ }
+
+ rtc_tm_to_time(alrm_tm, &time_set);
+ rtc_tm_to_time(&tm_now, &time_now);
+ if (time_set <= time_now) {
+ dev_err(dev, "Date to set in the past\n");
+ return -EINVAL;
+ }
+
+ time_gap = time_set - time_now;
+ time_gap_day = time_gap / SEC_IN_DAY;
+ time_gap -= time_gap_day * SEC_IN_DAY;
+ time_gap_hour = time_gap / SEC_IN_HOUR;
+ time_gap -= time_gap_hour * SEC_IN_HOUR;
+ time_gap_min = time_gap / SEC_IN_MIN;
+ time_gap -= time_gap_min * SEC_IN_MIN;
+
+ if (time_gap_day > 255) {
+ dev_err(dev, "Day must be in the range 0 - 255\n");
+ return -EINVAL;
+ }
+
+ sunxi_rtc_setaie(0, chip);
+ writel(0, chip->base + SUNXI_ALRM_DHMS);
+ usleep_range(100, 300);
+
+ alrm = SUNXI_ALRM_SET_SEC_VALUE(time_gap) |
+ SUNXI_ALRM_SET_MIN_VALUE(time_gap_min) |
+ SUNXI_ALRM_SET_HOUR_VALUE(time_gap_hour) |
+ SUNXI_ALRM_SET_DAY_VALUE(time_gap_day);
+ writel(alrm, chip->base + SUNXI_ALRM_DHMS);
+
+ writel(0, chip->base + SUNXI_ALRM_IRQ_EN);
+ writel(SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN, chip->base + SUNXI_ALRM_IRQ_EN);
+
+ sunxi_rtc_setaie(wkalrm->enabled, chip);
+
+ return 0;
+}
+
+static int sunxi_rtc_wait(struct sunxi_rtc_dev *chip, int offset,
+ unsigned int mask, unsigned int ms_timeout)
+{
+ const unsigned long timeout = jiffies + msecs_to_jiffies(ms_timeout);
+ u32 reg;
+
+ do {
+ reg = readl(chip->base + offset);
+ reg &= mask;
+
+ if (reg == mask)
+ return 0;
+
+ } while (time_before(jiffies, timeout));
+
+ return -ETIMEDOUT;
+}
+
+static int sunxi_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
+{
+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
+ u32 date = 0;
+ u32 time = 0;
+ int year;
+
+ /*
+ * the input rtc_tm->tm_year is the offset relative to 1900. We use
+ * the SUNXI_YEAR_OFF macro to rebase it with respect to the min year
+ * allowed by the hardware
+ */
+
+ year = rtc_tm->tm_year + 1900;
+ if (year < chip->data_year->min || year > chip->data_year->max) {
+ dev_err(dev, "rtc only supports year in range %d - %d\n",
+ chip->data_year->min, chip->data_year->max);
+ return -EINVAL;
+ }
+
+ rtc_tm->tm_year -= SUNXI_YEAR_OFF(chip->data_year);
+ rtc_tm->tm_mon += 1;
+
+ date = SUNXI_DATE_SET_DAY_VALUE(rtc_tm->tm_mday) |
+ SUNXI_DATE_SET_MON_VALUE(rtc_tm->tm_mon) |
+ SUNXI_DATE_SET_YEAR_VALUE(rtc_tm->tm_year,
+ chip->data_year->mask);
+
+ if (is_leap_year(year))
+ date |= SUNXI_LEAP_SET_VALUE(1, chip->data_year->leap_shift);
+
+ time = SUNXI_TIME_SET_SEC_VALUE(rtc_tm->tm_sec) |
+ SUNXI_TIME_SET_MIN_VALUE(rtc_tm->tm_min) |
+ SUNXI_TIME_SET_HOUR_VALUE(rtc_tm->tm_hour);
+
+ writel(0, chip->base + SUNXI_RTC_HMS);
+ writel(0, chip->base + SUNXI_RTC_YMD);
+
+ writel(time, chip->base + SUNXI_RTC_HMS);
+
+ /*
+ * After writing the RTC HH-MM-SS register, the
+ * SUNXI_LOSC_CTRL_RTC_HMS_ACC bit is set and it will not
+ * be cleared until the real writing operation is finished
+ */
+
+ if (sunxi_rtc_wait(chip, SUNXI_LOSC_CTRL,
+ SUNXI_LOSC_CTRL_RTC_HMS_ACC, 50)) {
+ dev_err(dev, "Failed to set rtc time.\n");
+ return -1;
+ }
+
+ writel(date, chip->base + SUNXI_RTC_YMD);
+
+ /*
+ * After writing the RTC YY-MM-DD register, the
+ * SUNXI_LOSC_CTRL_RTC_YMD_ACC bit is set and it will not
+ * be cleared until the real writing operation is finished
+ */
+
+ if (sunxi_rtc_wait(chip, SUNXI_LOSC_CTRL,
+ SUNXI_LOSC_CTRL_RTC_YMD_ACC, 50)) {
+ dev_err(dev, "Failed to set rtc time.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int sunxi_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
+
+ if (!enabled)
+ sunxi_rtc_setaie(enabled, chip);
+
+ return 0;
+}
+
+static const struct rtc_class_ops sunxi_rtc_ops = {
+ .read_time = sunxi_rtc_gettime,
+ .set_time = sunxi_rtc_settime,
+ .read_alarm = sunxi_rtc_getalarm,
+ .set_alarm = sunxi_rtc_setalarm,
+ .alarm_irq_enable = sunxi_rtc_alarm_irq_enable
+};
+
+static const struct of_device_id sunxi_rtc_dt_ids[] = {
+ { .compatible = "allwinner,sun4i-rtc", .data = &data_year_param[0] },
+ { .compatible = "allwinner,sun7i-a20-rtc", .data = &data_year_param[1] },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, sunxi_rtc_dt_ids);
+
+static int sunxi_rtc_probe(struct platform_device *pdev)
+{
+ struct sunxi_rtc_dev *chip;
+ struct resource *res;
+ const struct of_device_id *of_id;
+ int ret;
+
+ chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, chip);
+ chip->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ chip->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(chip->base))
+ return PTR_ERR(chip->base);
+
+ chip->irq = platform_get_irq(pdev, 0);
+ if (chip->irq < 0) {
+ dev_err(&pdev->dev, "No IRQ resource\n");
+ return chip->irq;
+ }
+ ret = devm_request_irq(&pdev->dev, chip->irq, sunxi_rtc_alarmirq,
+ 0, dev_name(&pdev->dev), chip);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not request IRQ\n");
+ return ret;
+ }
+
+ of_id = of_match_device(sunxi_rtc_dt_ids, &pdev->dev);
+ if (!of_id) {
+ dev_err(&pdev->dev, "Unable to setup RTC data\n");
+ return -ENODEV;
+ }
+ chip->data_year = (struct sunxi_rtc_data_year *) of_id->data;
+
+ /* clear the alarm count value */
+ writel(0, chip->base + SUNXI_ALRM_DHMS);
+
+ /* disable alarm, not generate irq pending */
+ writel(0, chip->base + SUNXI_ALRM_EN);
+
+ /* disable alarm week/cnt irq, unset to cpu */
+ writel(0, chip->base + SUNXI_ALRM_IRQ_EN);
+
+ /* clear alarm week/cnt irq pending */
+ writel(SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND, chip->base +
+ SUNXI_ALRM_IRQ_STA);
+
+ chip->rtc = rtc_device_register("rtc-sunxi", &pdev->dev,
+ &sunxi_rtc_ops, THIS_MODULE);
+ if (IS_ERR(chip->rtc)) {
+ dev_err(&pdev->dev, "unable to register device\n");
+ return PTR_ERR(chip->rtc);
+ }
+
+ dev_info(&pdev->dev, "RTC enabled\n");
+
+ return 0;
+}
+
+static int sunxi_rtc_remove(struct platform_device *pdev)
+{
+ struct sunxi_rtc_dev *chip = platform_get_drvdata(pdev);
+
+ rtc_device_unregister(chip->rtc);
+
+ return 0;
+}
+
+static struct platform_driver sunxi_rtc_driver = {
+ .probe = sunxi_rtc_probe,
+ .remove = sunxi_rtc_remove,
+ .driver = {
+ .name = "sunxi-rtc",
+ .owner = THIS_MODULE,
+ .of_match_table = sunxi_rtc_dt_ids,
+ },
+};
+
+module_platform_driver(sunxi_rtc_driver);
+
+MODULE_DESCRIPTION("sunxi RTC driver");
+MODULE_AUTHOR("Carlo Caione <carlo.caione@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 441ada489874..a3815eaed421 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1034,7 +1034,7 @@ config SERIAL_MSM_CONSOLE
config SERIAL_MSM_HS
tristate "MSM UART High Speed: Serial Driver"
- depends on ARCH_MSM
+ depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
select SERIAL_CORE
help
If you have a machine based on MSM family of SoCs, you
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index e4bf0e435af6..be33d2b0613b 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -39,6 +39,7 @@
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/notifier.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/scatterlist.h>
@@ -58,6 +59,23 @@
#include "sh-sci.h"
+/* Offsets into the sci_port->irqs array */
+enum {
+ SCIx_ERI_IRQ,
+ SCIx_RXI_IRQ,
+ SCIx_TXI_IRQ,
+ SCIx_BRI_IRQ,
+ SCIx_NR_IRQS,
+
+ SCIx_MUX_IRQ = SCIx_NR_IRQS, /* special case */
+};
+
+#define SCIx_IRQ_IS_MUXED(port) \
+ ((port)->irqs[SCIx_ERI_IRQ] == \
+ (port)->irqs[SCIx_RXI_IRQ]) || \
+ ((port)->irqs[SCIx_ERI_IRQ] && \
+ ((port)->irqs[SCIx_RXI_IRQ] < 0))
+
struct sci_port {
struct uart_port port;
@@ -1757,17 +1775,6 @@ static unsigned int sci_scbrr_calc(struct sci_port *s, unsigned int bps,
if (s->sampling_rate)
return DIV_ROUND_CLOSEST(freq, s->sampling_rate * bps) - 1;
- switch (s->cfg->scbrr_algo_id) {
- case SCBRR_ALGO_1:
- return freq / (16 * bps);
- case SCBRR_ALGO_2:
- return DIV_ROUND_CLOSEST(freq, 32 * bps) - 1;
- case SCBRR_ALGO_3:
- return freq / (8 * bps);
- case SCBRR_ALGO_4:
- return DIV_ROUND_CLOSEST(freq, 16 * bps) - 1;
- }
-
/* Warn, but use a safe default */
WARN_ON(1);
@@ -2105,36 +2112,27 @@ static int sci_init_single(struct platform_device *dev,
port->iotype = UPIO_MEM;
port->line = index;
- if (dev->num_resources) {
- /* Device has resources, use them. */
- res = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (res == NULL)
- return -ENOMEM;
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (res == NULL)
+ return -ENOMEM;
- port->mapbase = res->start;
+ port->mapbase = res->start;
- for (i = 0; i < ARRAY_SIZE(sci_port->irqs); ++i)
- sci_port->irqs[i] = platform_get_irq(dev, i);
+ for (i = 0; i < ARRAY_SIZE(sci_port->irqs); ++i)
+ sci_port->irqs[i] = platform_get_irq(dev, i);
- /* The SCI generates several interrupts. They can be muxed
- * together or connected to different interrupt lines. In the
- * muxed case only one interrupt resource is specified. In the
- * non-muxed case three or four interrupt resources are
- * specified, as the BRI interrupt is optional.
- */
- if (sci_port->irqs[0] < 0)
- return -ENXIO;
+ /* The SCI generates several interrupts. They can be muxed together or
+ * connected to different interrupt lines. In the muxed case only one
+ * interrupt resource is specified. In the non-muxed case three or four
+ * interrupt resources are specified, as the BRI interrupt is optional.
+ */
+ if (sci_port->irqs[0] < 0)
+ return -ENXIO;
- if (sci_port->irqs[1] < 0) {
- sci_port->irqs[1] = sci_port->irqs[0];
- sci_port->irqs[2] = sci_port->irqs[0];
- sci_port->irqs[3] = sci_port->irqs[0];
- }
- } else {
- /* No resources, use old-style platform data. */
- port->mapbase = p->mapbase;
- for (i = 0; i < ARRAY_SIZE(sci_port->irqs); ++i)
- sci_port->irqs[i] = p->irqs[i] ? p->irqs[i] : -ENXIO;
+ if (sci_port->irqs[1] < 0) {
+ sci_port->irqs[1] = sci_port->irqs[0];
+ sci_port->irqs[2] = sci_port->irqs[0];
+ sci_port->irqs[3] = sci_port->irqs[0];
}
if (p->regtype == SCIx_PROBE_REGTYPE) {
@@ -2176,17 +2174,12 @@ static int sci_init_single(struct platform_device *dev,
break;
}
- /* Set the sampling rate if the baud rate calculation algorithm isn't
- * specified.
+ /* SCIFA on sh7723 and sh7724 need a custom sampling rate that doesn't
+ * match the SoC datasheet, this should be investigated. Let platform
+ * data override the sampling rate for now.
*/
- if (p->scbrr_algo_id == SCBRR_ALGO_NONE) {
- /* SCIFA on sh7723 and sh7724 need a custom sampling rate that
- * doesn't match the SoC datasheet, this should be investigated.
- * Let platform data override the sampling rate for now.
- */
- sci_port->sampling_rate = p->sampling_rate ? p->sampling_rate
- : sampling_rate;
- }
+ sci_port->sampling_rate = p->sampling_rate ? p->sampling_rate
+ : sampling_rate;
if (!early) {
sci_port->iclk = clk_get(&dev->dev, "sci_ick");
@@ -2423,6 +2416,83 @@ static int sci_remove(struct platform_device *dev)
return 0;
}
+struct sci_port_info {
+ unsigned int type;
+ unsigned int regtype;
+};
+
+static const struct of_device_id of_sci_match[] = {
+ {
+ .compatible = "renesas,scif",
+ .data = (void *)&(const struct sci_port_info) {
+ .type = PORT_SCIF,
+ .regtype = SCIx_SH4_SCIF_REGTYPE,
+ },
+ }, {
+ .compatible = "renesas,scifa",
+ .data = (void *)&(const struct sci_port_info) {
+ .type = PORT_SCIFA,
+ .regtype = SCIx_SCIFA_REGTYPE,
+ },
+ }, {
+ .compatible = "renesas,scifb",
+ .data = (void *)&(const struct sci_port_info) {
+ .type = PORT_SCIFB,
+ .regtype = SCIx_SCIFB_REGTYPE,
+ },
+ }, {
+ .compatible = "renesas,hscif",
+ .data = (void *)&(const struct sci_port_info) {
+ .type = PORT_HSCIF,
+ .regtype = SCIx_HSCIF_REGTYPE,
+ },
+ }, {
+ /* Terminator */
+ },
+};
+MODULE_DEVICE_TABLE(of, of_sci_match);
+
+static struct plat_sci_port *
+sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *match;
+ const struct sci_port_info *info;
+ struct plat_sci_port *p;
+ int id;
+
+ if (!IS_ENABLED(CONFIG_OF) || !np)
+ return NULL;
+
+ match = of_match_node(of_sci_match, pdev->dev.of_node);
+ if (!match)
+ return NULL;
+
+ info = match->data;
+
+ p = devm_kzalloc(&pdev->dev, sizeof(struct plat_sci_port), GFP_KERNEL);
+ if (!p) {
+ dev_err(&pdev->dev, "failed to allocate DT config data\n");
+ return NULL;
+ }
+
+ /* Get the line number for the aliases node. */
+ id = of_alias_get_id(np, "serial");
+ if (id < 0) {
+ dev_err(&pdev->dev, "failed to get alias id (%d)\n", id);
+ return NULL;
+ }
+
+ *dev_id = id;
+
+ p->flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF;
+ p->type = info->type;
+ p->regtype = info->regtype;
+ p->scscr = SCSCR_RE | SCSCR_TE;
+
+ return p;
+}
+
static int sci_probe_single(struct platform_device *dev,
unsigned int index,
struct plat_sci_port *p,
@@ -2455,8 +2525,9 @@ static int sci_probe_single(struct platform_device *dev,
static int sci_probe(struct platform_device *dev)
{
- struct plat_sci_port *p = dev_get_platdata(&dev->dev);
- struct sci_port *sp = &sci_ports[dev->id];
+ struct plat_sci_port *p;
+ struct sci_port *sp;
+ unsigned int dev_id;
int ret;
/*
@@ -2467,9 +2538,24 @@ static int sci_probe(struct platform_device *dev)
if (is_early_platform_device(dev))
return sci_probe_earlyprintk(dev);
+ if (dev->dev.of_node) {
+ p = sci_parse_dt(dev, &dev_id);
+ if (p == NULL)
+ return -EINVAL;
+ } else {
+ p = dev->dev.platform_data;
+ if (p == NULL) {
+ dev_err(&dev->dev, "no platform data supplied\n");
+ return -EINVAL;
+ }
+
+ dev_id = dev->id;
+ }
+
+ sp = &sci_ports[dev_id];
platform_set_drvdata(dev, sp);
- ret = sci_probe_single(dev, dev->id, p, sp);
+ ret = sci_probe_single(dev, dev_id, p, sp);
if (ret)
return ret;
@@ -2521,6 +2607,7 @@ static struct platform_driver sci_driver = {
.name = "sh-sci",
.owner = THIS_MODULE,
.pm = &sci_dev_pm_ops,
+ .of_match_table = of_match_ptr(of_sci_match),
},
};
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index c6c325e4d80d..110b4b9ebeaa 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -94,7 +94,7 @@ static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
int i = 0;
if (r8a66597->pdata->on_chip) {
- clk_enable(r8a66597->clk);
+ clk_prepare_enable(r8a66597->clk);
do {
r8a66597_write(r8a66597, SCKE, SYSCFG0);
tmp = r8a66597_read(r8a66597, SYSCFG0);
@@ -138,7 +138,7 @@ static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
udelay(1);
if (r8a66597->pdata->on_chip) {
- clk_disable(r8a66597->clk);
+ clk_disable_unprepare(r8a66597->clk);
} else {
r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index 37752832b770..8546c8dccd51 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -40,8 +40,6 @@
#include <linux/usb/msm_hsusb_hw.h>
#include <linux/regulator/consumer.h>
-#include <mach/clk.h>
-
#define MSM_USB_BASE (motg->regs)
#define DRIVER_NAME "msm_otg"
@@ -308,33 +306,30 @@ static void ulpi_init(struct msm_otg *motg)
static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert)
{
- int ret;
+ int ret = 0;
+
+ if (!motg->pdata->link_clk_reset)
+ return ret;
+
+ ret = motg->pdata->link_clk_reset(motg->clk, assert);
+ if (ret)
+ dev_err(motg->phy.dev, "usb link clk reset %s failed\n",
+ assert ? "assert" : "deassert");
- if (assert) {
- ret = clk_reset(motg->clk, CLK_RESET_ASSERT);
- if (ret)
- dev_err(motg->phy.dev, "usb hs_clk assert failed\n");
- } else {
- ret = clk_reset(motg->clk, CLK_RESET_DEASSERT);
- if (ret)
- dev_err(motg->phy.dev, "usb hs_clk deassert failed\n");
- }
return ret;
}
static int msm_otg_phy_clk_reset(struct msm_otg *motg)
{
- int ret;
+ int ret = 0;
- ret = clk_reset(motg->phy_reset_clk, CLK_RESET_ASSERT);
- if (ret) {
- dev_err(motg->phy.dev, "usb phy clk assert failed\n");
+ if (!motg->pdata->phy_clk_reset)
return ret;
- }
- usleep_range(10000, 12000);
- ret = clk_reset(motg->phy_reset_clk, CLK_RESET_DEASSERT);
+
+ ret = motg->pdata->phy_clk_reset(motg->phy_reset_clk);
if (ret)
- dev_err(motg->phy.dev, "usb phy clk deassert failed\n");
+ dev_err(motg->phy.dev, "usb phy clk reset failed\n");
+
return ret;
}
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index dd625cca1ae5..12591f6596ef 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -247,7 +247,7 @@ MODULE_DEVICE_TABLE(of, davinci_wdt_of_match);
static struct platform_driver platform_wdt_driver = {
.driver = {
- .name = "watchdog",
+ .name = "davinci-wdt",
.owner = THIS_MODULE,
.of_match_table = davinci_wdt_of_match,
},
@@ -267,4 +267,4 @@ MODULE_PARM_DESC(heartbeat,
__MODULE_STRING(DEFAULT_HEARTBEAT));
MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:watchdog");
+MODULE_ALIAS("platform:davinci-wdt");

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