[PATCH v9 1/9] mfd: omap-usb-host: Get clocks based on hardware revision

Roger Quadros
2014-02-27T14:18:23Z

Not all revisions have all the clocks so get the necessary clocks
based on hardware revision.

This should avoid un-necessary clk_get failure messages that were
observed earlier.

Also remove the dummy USB host clocks from the OMAP3 clock data.
These are no longer expected by the driver.

CC: Lee Jones <lee.jones@linaro.org>
CC: Samuel Ortiz <sameo@linux.intel.com>
CC: Tero Kristo <t-kristo@ti.com>
Acked-by: Mike Turquette <mturquette@linaro.org> [OMAP3 CLK data]
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
arch/arm/mach-omap2/cclock3xxx_data.c | 4 ----
drivers/clk/ti/clk-3xxx.c | 4 ----
drivers/mfd/omap-usb-host.c | 43 ++++++++++++++++++++++++++---------
3 files changed, 32 insertions(+), 19 deletions(-)

diff --git a/arch/arm/mach-omap2/cclock3xxx_data.c b/arch/arm/mach-omap2/cclock3xxx_data.c
index 3b05aea..4299a55 100644
--- a/arch/arm/mach-omap2/cclock3xxx_data.c
+++ b/arch/arm/mach-omap2/cclock3xxx_data.c
@@ -3495,10 +3495,6 @@ static struct omap_clk omap3xxx_clks[] = {
CLK(NULL, "dss_tv_fck", &dss_tv_fck),
CLK(NULL, "dss_96m_fck", &dss_96m_fck),
CLK(NULL, "dss2_alwon_fck", &dss2_alwon_fck),
- CLK(NULL, "utmi_p1_gfclk", &dummy_ck),
- CLK(NULL, "utmi_p2_gfclk", &dummy_ck),
- CLK(NULL, "xclk60mhsp1_ck", &dummy_ck),
- CLK(NULL, "xclk60mhsp2_ck", &dummy_ck),
CLK(NULL, "init_60m_fclk", &dummy_ck),
CLK(NULL, "gpt1_fck", &gpt1_fck),
CLK(NULL, "aes2_ick", &aes2_ick),
diff --git a/drivers/clk/ti/clk-3xxx.c b/drivers/clk/ti/clk-3xxx.c
index d323023..0d1750a 100644
--- a/drivers/clk/ti/clk-3xxx.c
+++ b/drivers/clk/ti/clk-3xxx.c
@@ -130,10 +130,6 @@ static struct ti_dt_clk omap3xxx_clks[] = {
DT_CLK(NULL, "dss_tv_fck", "dss_tv_fck"),
DT_CLK(NULL, "dss_96m_fck", "dss_96m_fck"),
DT_CLK(NULL, "dss2_alwon_fck", "dss2_alwon_fck"),
- DT_CLK(NULL, "utmi_p1_gfclk", "dummy_ck"),
- DT_CLK(NULL, "utmi_p2_gfclk", "dummy_ck"),
- DT_CLK(NULL, "xclk60mhsp1_ck", "dummy_ck"),
- DT_CLK(NULL, "xclk60mhsp2_ck", "dummy_ck"),
DT_CLK(NULL, "init_60m_fclk", "dummy_ck"),
DT_CLK(NULL, "gpt1_fck", "gpt1_fck"),
DT_CLK(NULL, "aes2_ick", "aes2_ick"),
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 0c3c9a0..c63bfdf 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -665,22 +665,43 @@ static int usbhs_omap_probe(struct platform_device *pdev)
goto err_mem;
}

- need_logic_fck = false;
+ /* Set all clocks as invalid to begin with */
+ omap->ehci_logic_fck = ERR_PTR(-ENODEV);
+ omap->init_60m_fclk = ERR_PTR(-ENODEV);
+ omap->utmi_p1_gfclk = ERR_PTR(-ENODEV);
+ omap->utmi_p2_gfclk = ERR_PTR(-ENODEV);
+ omap->xclk60mhsp1_ck = ERR_PTR(-ENODEV);
+ omap->xclk60mhsp2_ck = ERR_PTR(-ENODEV);
+
for (i = 0; i < omap->nports; i++) {
- if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) ||
- is_ehci_hsic_mode(i))
- need_logic_fck |= true;
+ omap->utmi_clk[i] = ERR_PTR(-ENODEV);
+ omap->hsic480m_clk[i] = ERR_PTR(-ENODEV);
+ omap->hsic60m_clk[i] = ERR_PTR(-ENODEV);
}

- omap->ehci_logic_fck = ERR_PTR(-EINVAL);
- if (need_logic_fck) {
- omap->ehci_logic_fck = devm_clk_get(dev, "ehci_logic_fck");
- if (IS_ERR(omap->ehci_logic_fck)) {
- ret = PTR_ERR(omap->ehci_logic_fck);
- dev_dbg(dev, "ehci_logic_fck failed:%d\n", ret);
+ /* for OMAP3 i.e. USBHS REV1 */
+ if (omap->usbhs_rev == OMAP_USBHS_REV1) {
+ need_logic_fck = false;
+ for (i = 0; i < omap->nports; i++) {
+ if (is_ehci_phy_mode(pdata->port_mode[i]) ||
+ is_ehci_tll_mode(pdata->port_mode[i]) ||
+ is_ehci_hsic_mode(pdata->port_mode[i]))
+
+ need_logic_fck |= true;
+ }
+
+ if (need_logic_fck) {
+ omap->ehci_logic_fck = devm_clk_get(dev,
+ "ehci_logic_fck");
+ if (IS_ERR(omap->ehci_logic_fck)) {
+ ret = PTR_ERR(omap->ehci_logic_fck);
+ dev_dbg(dev, "ehci_logic_fck failed:%d\n", ret);
+ }
}
+ goto initialize;
}

+ /* for OMAP4+ i.e. USBHS REV2+ */
omap->utmi_p1_gfclk = devm_clk_get(dev, "utmi_p1_gfclk");
if (IS_ERR(omap->utmi_p1_gfclk)) {
ret = PTR_ERR(omap->utmi_p1_gfclk);
@@ -748,7 +769,6 @@ static int usbhs_omap_probe(struct platform_device *pdev)
}

if (is_ehci_phy_mode(pdata->port_mode[0])) {
- /* for OMAP3, clk_set_parent fails */
ret = clk_set_parent(omap->utmi_p1_gfclk,
omap->xclk60mhsp1_ck);
if (ret != 0)
@@ -776,6 +796,7 @@ static int usbhs_omap_probe(struct platform_device *pdev)
ret);
}

+initialize:
omap_usbhs_init(dev);

if (dev->of_node) {
--
1.8.3.2