leandrof/u-boot
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

musb-new: sunxi: Use CLK and RESET support

Browse Source 
Now clock and reset drivers are available for respective
SoC's so use clk and reset ops on musb driver.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Jagan Teki 2018-12-31 17:05:40 +05:30
parent 652ee2788f
commit b9aa0a9332
1 changed files with 40 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
drivers/usb/musb-new/sunxi.c
View File

@ -16,9 +16,11 @@
* This file is part of the Inventra Controller Driver for Linux.
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <generic-phy.h>
#include <phy-sun4i-usb.h>
#include <reset.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
@ -80,16 +82,12 @@
struct sunxi_musb_config {
struct musb_hdrc_config *config;
bool has_reset;
u8 rst_bit;
u8 clkgate_bit;
u32 off_reset0;
};
struct sunxi_glue {
struct musb_host_data mdata;
struct sunxi_ccm_reg *ccm;
u32 *reg_reset0;
struct clk clk;
struct reset_ctl rst;
struct sunxi_musb_config *cfg;
struct device dev;
struct phy phy;
@ -296,25 +294,28 @@ static int sunxi_musb_init(struct musb *musb)
pr_debug("%s():\n", __func__);
ret = generic_phy_init(&glue->phy);
ret = clk_enable(&glue->clk);
if (ret) {
pr_err("failed to init USB PHY\n");
dev_err(dev, "failed to enable clock\n");
return ret;
}
if (reset_valid(&glue->rst)) {
ret = reset_deassert(&glue->rst);
if (ret) {
dev_err(dev, "failed to deassert reset\n");
goto err_clk;
}
}
ret = generic_phy_init(&glue->phy);
if (ret) {
dev_err(dev, "failed to init USB PHY\n");
goto err_rst;
}
musb->isr = sunxi_musb_interrupt;
setbits_le32(&glue->ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_USB0));
if (glue->cfg->clkgate_bit)
setbits_le32(&glue->ccm->ahb_gate0,
BIT(glue->cfg->clkgate_bit));
if (glue->cfg->has_reset)
setbits_le32(glue->reg_reset0, BIT(AHB_GATE_OFFSET_USB0));
if (glue->cfg->rst_bit)
setbits_le32(glue->reg_reset0, BIT(glue->cfg->rst_bit));
USBC_ConfigFIFO_Base();
USBC_EnableDpDmPullUp(musb->mregs);
USBC_EnableIdPullUp(musb->mregs);
@ -329,6 +330,13 @@ static int sunxi_musb_init(struct musb *musb)
USBC_ForceVbusValidToHigh(musb->mregs);
return 0;
err_rst:
if (reset_valid(&glue->rst))
reset_assert(&glue->rst);
err_clk:
clk_disable(&glue->clk);
return ret;
}
static int sunxi_musb_exit(struct musb *musb)
@ -344,16 +352,9 @@ static int sunxi_musb_exit(struct musb *musb)
}
}
if (glue->cfg->has_reset)
clrbits_le32(glue->reg_reset0, BIT(AHB_GATE_OFFSET_USB0));
if (glue->cfg->rst_bit)
clrbits_le32(glue->reg_reset0, BIT(glue->cfg->rst_bit));
clrbits_le32(&glue->ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_USB0));
if (glue->cfg->clkgate_bit)
clrbits_le32(&glue->ccm->ahb_gate0,
BIT(glue->cfg->clkgate_bit));
if (reset_valid(&glue->rst))
reset_assert(&glue->rst);
clk_disable(&glue->clk);
return 0;
}
@ -450,11 +451,17 @@ static int musb_usb_probe(struct udevice *dev)
if (!glue->cfg)
return -EINVAL;
glue->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
if (IS_ERR(glue->ccm))
return PTR_ERR(glue->ccm);
ret = clk_get_by_index(dev, 0, &glue->clk);
if (ret) {
dev_err(dev, "failed to get clock\n");
return ret;
}
glue->reg_reset0 = (void *)glue->ccm + glue->cfg->off_reset0;
ret = reset_get_by_index(dev, 0, &glue->rst);
if (ret && ret != -ENOENT) {
dev_err(dev, "failed to get reset\n");
return ret;
}
ret = generic_phy_get_by_name(dev, "usb", &glue->phy);
if (ret) {
@ -462,7 +469,6 @@ static int musb_usb_probe(struct udevice *dev)
return ret;
}
memset(&pdata, 0, sizeof(pdata));
pdata.power = 250;
pdata.platform_ops = &sunxi_musb_ops;
@ -505,21 +511,14 @@ static int musb_usb_remove(struct udevice *dev)
static const struct sunxi_musb_config sun4i_a10_cfg = {
.config = &musb_config,
.has_reset = false,
};
static const struct sunxi_musb_config sun6i_a31_cfg = {
.config = &musb_config,
.has_reset = true,
.off_reset0 = OFF_SUN6I_AHB_RESET0,
};
static const struct sunxi_musb_config sun8i_h3_cfg = {
.config = &musb_config_h3,
.has_reset = true,
.rst_bit = 23,
.clkgate_bit = 23,
.off_reset0 = OFF_SUN6I_AHB_RESET0,
};
static const struct udevice_id sunxi_musb_ids[] = {