diff options
Diffstat (limited to 'drivers/mfd/tc6387xb.c')
| -rw-r--r-- | drivers/mfd/tc6387xb.c | 119 |
1 files changed, 88 insertions, 31 deletions
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c index 3280ab33f88a..5c7f04343d5c 100644 --- a/drivers/mfd/tc6387xb.c +++ b/drivers/mfd/tc6387xb.c | |||
| @@ -22,28 +22,52 @@ enum { | |||
| 22 | TC6387XB_CELL_MMC, | 22 | TC6387XB_CELL_MMC, |
| 23 | }; | 23 | }; |
| 24 | 24 | ||
| 25 | struct tc6387xb { | ||
| 26 | void __iomem *scr; | ||
| 27 | struct clk *clk32k; | ||
| 28 | struct resource rscr; | ||
| 29 | }; | ||
| 30 | |||
| 31 | static struct resource tc6387xb_mmc_resources[] = { | ||
| 32 | { | ||
| 33 | .start = 0x800, | ||
| 34 | .end = 0x9ff, | ||
| 35 | .flags = IORESOURCE_MEM, | ||
| 36 | }, | ||
| 37 | { | ||
| 38 | .start = 0, | ||
| 39 | .end = 0, | ||
| 40 | .flags = IORESOURCE_IRQ, | ||
| 41 | }, | ||
| 42 | }; | ||
| 43 | |||
| 44 | /*--------------------------------------------------------------------------*/ | ||
| 45 | |||
| 25 | #ifdef CONFIG_PM | 46 | #ifdef CONFIG_PM |
| 26 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) | 47 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) |
| 27 | { | 48 | { |
| 28 | struct clk *clk32k = platform_get_drvdata(dev); | 49 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
| 29 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; | 50 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; |
| 30 | 51 | ||
| 31 | if (pdata && pdata->suspend) | 52 | if (pdata && pdata->suspend) |
| 32 | pdata->suspend(dev); | 53 | pdata->suspend(dev); |
| 33 | clk_disable(clk32k); | 54 | clk_disable(tc6387xb->clk32k); |
| 34 | 55 | ||
| 35 | return 0; | 56 | return 0; |
| 36 | } | 57 | } |
| 37 | 58 | ||
| 38 | static int tc6387xb_resume(struct platform_device *dev) | 59 | static int tc6387xb_resume(struct platform_device *dev) |
| 39 | { | 60 | { |
| 40 | struct clk *clk32k = platform_get_drvdata(dev); | 61 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
| 41 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; | 62 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; |
| 42 | 63 | ||
| 43 | clk_enable(clk32k); | 64 | clk_enable(tc6387xb->clk32k); |
| 44 | if (pdata && pdata->resume) | 65 | if (pdata && pdata->resume) |
| 45 | pdata->resume(dev); | 66 | pdata->resume(dev); |
| 46 | 67 | ||
| 68 | tmio_core_mmc_resume(tc6387xb->scr + 0x200, 0, | ||
| 69 | tc6387xb_mmc_resources[0].start & 0xfffe); | ||
| 70 | |||
| 47 | return 0; | 71 | return 0; |
| 48 | } | 72 | } |
| 49 | #else | 73 | #else |
| @@ -53,12 +77,32 @@ static int tc6387xb_resume(struct platform_device *dev) | |||
| 53 | 77 | ||
| 54 | /*--------------------------------------------------------------------------*/ | 78 | /*--------------------------------------------------------------------------*/ |
| 55 | 79 | ||
| 80 | static void tc6387xb_mmc_pwr(struct platform_device *mmc, int state) | ||
| 81 | { | ||
| 82 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | ||
| 83 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); | ||
| 84 | |||
| 85 | tmio_core_mmc_pwr(tc6387xb->scr + 0x200, 0, state); | ||
| 86 | } | ||
| 87 | |||
| 88 | static void tc6387xb_mmc_clk_div(struct platform_device *mmc, int state) | ||
| 89 | { | ||
| 90 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | ||
| 91 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); | ||
| 92 | |||
| 93 | tmio_core_mmc_clk_div(tc6387xb->scr + 0x200, 0, state); | ||
| 94 | } | ||
| 95 | |||
| 96 | |||
| 56 | static int tc6387xb_mmc_enable(struct platform_device *mmc) | 97 | static int tc6387xb_mmc_enable(struct platform_device *mmc) |
| 57 | { | 98 | { |
| 58 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | 99 | struct platform_device *dev = to_platform_device(mmc->dev.parent); |
| 59 | struct clk *clk32k = platform_get_drvdata(dev); | 100 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
| 60 | 101 | ||
| 61 | clk_enable(clk32k); | 102 | clk_enable(tc6387xb->clk32k); |
| 103 | |||
| 104 | tmio_core_mmc_enable(tc6387xb->scr + 0x200, 0, | ||
| 105 | tc6387xb_mmc_resources[0].start & 0xfffe); | ||
| 62 | 106 | ||
| 63 | return 0; | 107 | return 0; |
| 64 | } | 108 | } |
| @@ -66,36 +110,20 @@ static int tc6387xb_mmc_enable(struct platform_device *mmc) | |||
| 66 | static int tc6387xb_mmc_disable(struct platform_device *mmc) | 110 | static int tc6387xb_mmc_disable(struct platform_device *mmc) |
| 67 | { | 111 | { |
| 68 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | 112 | struct platform_device *dev = to_platform_device(mmc->dev.parent); |
| 69 | struct clk *clk32k = platform_get_drvdata(dev); | 113 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
| 70 | 114 | ||
| 71 | clk_disable(clk32k); | 115 | clk_disable(tc6387xb->clk32k); |
| 72 | 116 | ||
| 73 | return 0; | 117 | return 0; |
| 74 | } | 118 | } |
| 75 | 119 | ||
| 76 | /*--------------------------------------------------------------------------*/ | ||
| 77 | |||
| 78 | static struct tmio_mmc_data tc6387xb_mmc_data = { | 120 | static struct tmio_mmc_data tc6387xb_mmc_data = { |
| 79 | .hclk = 24000000, | 121 | .hclk = 24000000, |
| 122 | .set_pwr = tc6387xb_mmc_pwr, | ||
| 123 | .set_clk_div = tc6387xb_mmc_clk_div, | ||
| 80 | }; | 124 | }; |
| 81 | 125 | ||
| 82 | static struct resource tc6387xb_mmc_resources[] = { | 126 | /*--------------------------------------------------------------------------*/ |
| 83 | { | ||
| 84 | .start = 0x800, | ||
| 85 | .end = 0x9ff, | ||
| 86 | .flags = IORESOURCE_MEM, | ||
| 87 | }, | ||
| 88 | { | ||
| 89 | .start = 0x200, | ||
| 90 | .end = 0x2ff, | ||
| 91 | .flags = IORESOURCE_MEM, | ||
| 92 | }, | ||
| 93 | { | ||
| 94 | .start = 0, | ||
| 95 | .end = 0, | ||
| 96 | .flags = IORESOURCE_IRQ, | ||
| 97 | }, | ||
| 98 | }; | ||
| 99 | 127 | ||
| 100 | static struct mfd_cell tc6387xb_cells[] = { | 128 | static struct mfd_cell tc6387xb_cells[] = { |
| 101 | [TC6387XB_CELL_MMC] = { | 129 | [TC6387XB_CELL_MMC] = { |
| @@ -111,8 +139,9 @@ static struct mfd_cell tc6387xb_cells[] = { | |||
| 111 | static int tc6387xb_probe(struct platform_device *dev) | 139 | static int tc6387xb_probe(struct platform_device *dev) |
| 112 | { | 140 | { |
| 113 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; | 141 | struct tc6387xb_platform_data *pdata = dev->dev.platform_data; |
| 114 | struct resource *iomem; | 142 | struct resource *iomem, *rscr; |
| 115 | struct clk *clk32k; | 143 | struct clk *clk32k; |
| 144 | struct tc6387xb *tc6387xb; | ||
| 116 | int irq, ret; | 145 | int irq, ret; |
| 117 | 146 | ||
| 118 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); | 147 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| @@ -120,18 +149,40 @@ static int tc6387xb_probe(struct platform_device *dev) | |||
| 120 | return -EINVAL; | 149 | return -EINVAL; |
| 121 | } | 150 | } |
| 122 | 151 | ||
| 152 | tc6387xb = kzalloc(sizeof *tc6387xb, GFP_KERNEL); | ||
| 153 | if (!tc6387xb) | ||
| 154 | return -ENOMEM; | ||
| 155 | |||
| 123 | ret = platform_get_irq(dev, 0); | 156 | ret = platform_get_irq(dev, 0); |
| 124 | if (ret >= 0) | 157 | if (ret >= 0) |
| 125 | irq = ret; | 158 | irq = ret; |
| 126 | else | 159 | else |
| 127 | goto err_resource; | 160 | goto err_no_irq; |
| 128 | 161 | ||
| 129 | clk32k = clk_get(&dev->dev, "CLK_CK32K"); | 162 | clk32k = clk_get(&dev->dev, "CLK_CK32K"); |
| 130 | if (IS_ERR(clk32k)) { | 163 | if (IS_ERR(clk32k)) { |
| 131 | ret = PTR_ERR(clk32k); | 164 | ret = PTR_ERR(clk32k); |
| 165 | goto err_no_clk; | ||
| 166 | } | ||
| 167 | |||
| 168 | rscr = &tc6387xb->rscr; | ||
| 169 | rscr->name = "tc6387xb-core"; | ||
| 170 | rscr->start = iomem->start; | ||
| 171 | rscr->end = iomem->start + 0xff; | ||
| 172 | rscr->flags = IORESOURCE_MEM; | ||
| 173 | |||
| 174 | ret = request_resource(iomem, rscr); | ||
| 175 | if (ret) | ||
| 132 | goto err_resource; | 176 | goto err_resource; |
| 177 | |||
| 178 | tc6387xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1); | ||
| 179 | if (!tc6387xb->scr) { | ||
| 180 | ret = -ENOMEM; | ||
| 181 | goto err_ioremap; | ||
| 133 | } | 182 | } |
| 134 | platform_set_drvdata(dev, clk32k); | 183 | |
| 184 | tc6387xb->clk32k = clk32k; | ||
| 185 | platform_set_drvdata(dev, tc6387xb); | ||
| 135 | 186 | ||
| 136 | if (pdata && pdata->enable) | 187 | if (pdata && pdata->enable) |
| 137 | pdata->enable(dev); | 188 | pdata->enable(dev); |
| @@ -149,8 +200,13 @@ static int tc6387xb_probe(struct platform_device *dev) | |||
| 149 | if (!ret) | 200 | if (!ret) |
| 150 | return 0; | 201 | return 0; |
| 151 | 202 | ||
| 152 | clk_put(clk32k); | 203 | err_ioremap: |
| 204 | release_resource(&tc6387xb->rscr); | ||
| 153 | err_resource: | 205 | err_resource: |
| 206 | clk_put(clk32k); | ||
| 207 | err_no_clk: | ||
| 208 | err_no_irq: | ||
| 209 | kfree(tc6387xb); | ||
| 154 | return ret; | 210 | return ret; |
| 155 | } | 211 | } |
| 156 | 212 | ||
| @@ -195,3 +251,4 @@ MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); | |||
| 195 | MODULE_LICENSE("GPL v2"); | 251 | MODULE_LICENSE("GPL v2"); |
| 196 | MODULE_AUTHOR("Ian Molton"); | 252 | MODULE_AUTHOR("Ian Molton"); |
| 197 | MODULE_ALIAS("platform:tc6387xb"); | 253 | MODULE_ALIAS("platform:tc6387xb"); |
| 254 | |||
